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WPO202100033 VSMP - SWPPP 2021-06-01
Albemarle County Virginia Stormwater Pollution Prevention Plan Troxell Poultry House May 26, 2021 �,,v pp L o��o racy v NATHAN HUNTER BNO" Lic. No.W2060274 AL Blackwell Engineering, PLC 566 East Market St Harrisonburg Virginia 22801 - (540) 432.9555 - www.BlackwallEngineering.com BE # 2888 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 Stormwater Pollution Prevention Plan For: Troxell Poultry House 7369 Dyers Mill Lane Scottsville, VA 24590 Rittonhouse Excavating 434-981-2124 Owner(s): Broc Troxell 7369 Dyers Mill Lane Scottsville, VA 24590 570-4120364 SWPPP Preparation Date: May 26, 2021 Estimated Project Dates: Project Start Date: June 7, 2021 Project Completion Date: June 7, 2022 Prepared by Blackwell Engineering, PLC Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 Contents SWPPPAppendices........................................................................................................................iii SECTION 1: SITE EVALUATION, ASSESSMENT, AND PLANNING.......................................................1 1.1 Project/Site Information...................................................................................................... 1 1.2 Contact Information/Responsable Parties........................................................................... 1 1.3 Receiving Waters................................................................................................................ 3 1.4 Potential Sources of Pollution............................................................................................. 3 1.5 Historic Preservation........................................................................................................... 4 1.6 Maps.................................................................................................................................... 5 1.7 Endangered Species Certification....................................................................................... 6 1.8 Miscellaneous Details for Pollution Prevention............................................................... 12 SECTION 2: EROSION AND SEDIMENT CONTROL BMPS..................................................................14 2.1 Minimize Disturbed Area and Protect Natural Features and Soil ..................................... 14 2.2 Phase Construction Activity ............................................................................................. 15 2.3 Control Stormwater Flowing onto and through the Project .............................................. 15 2.4 Stabilize Soils.................................................................................................................... 16 2.5 Protect Slopes.................................................................................................................... 20 2.6 Protect Storm Drain Inlets................................................................................................ 21 2.7 Establish Perimeter Controls and Sediment Barriers........................................................ 22 2.8 Retain Sediment On-Site................................................................................................... 23 2.9 Establish Stabilized Construction Exits............................................................................ 24 SECTION 3: GOOD HOUSEKEEPING BMPS...................................................................................... 26 3.1 Material Handling and Waste Management..................................................................... 26 3.2 Establish Proper Building Material Staging Areas........................................................... 29 3.3 Designate Washout Areas................................................................................................. 30 3.4 Establish Proper Equipment/Vehicle Fueling and Maintenance Practices ....................... 31 3.5 Control Equipment/Vehicle Washing............................................................................... 32 3.6 Spill Prevention and Control Plan ..................................................................................... 32 3.7 Paved or Public Roads...................................................................................................... 33 3.8 Any Additional BMPs....................................................................................................... 33 3.9 Allowable Non-Stormwater Discharge Management....................................................... 34 SECTION 4: FINAL STABILIZATION AND POST -CONSTRUCTION BMP'S..........................................35 SECTION5: INSPECTIONS................................................................................................................35 5.1 Inspections........................................................................................................................ 35 5.2 Delegation of Authority .................................................................................................... 37 5.3 Corrective Action Log...................................................................................................... 37 SECTION 6: RECORDKEEPING AND TRAINING................................................................................ 38 6.1 Recordkeeping.................................................................................................................. 38 6.2 Log of Changes to the SWPPP......................................................................................... 39 Prepared by Blackwell Engineering, PLC ii SWPPP Appendices Appendix A Appendix B Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 General Location Map/Drawing Aerial Photograph Terrain Map General Permit Appendix C............................................................. VSMP General Permit Registration Statement Acknowledgement Letter from DEQ Appendix D ... Inspection Report AppendixE................................................................................................... Corrective Action Log Appendix F............................................................................................... SWPPP Amendment Log Appendix G..................................................................... Subcontractor Certifications/Agreements Appendix H..................................................................... Grading and Stabilization Activities Log Appendix I........................................................................................ Delegation of Authority Form Appendix J.......................................................................................... Change of Ownership Letter Termination Notice AppendixK.................................................................................................. When to Report a Spill Contact List (ESC, DEQ) AppendixL....................................................................................................................... ESC Plan Prepared by Blackwell Engineering, PLC iii Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 SECTION 1: SITE EVALUATION, ASSESSMENT, AND PLANNING 1.1 Project/Site Information Project/Site Name: Troxell Poultry House Project Street/Location: 7369 Dyers Mill Lane City: Scottsville State: VA ZIP Code: 24590 County: Albemarle Latitude/Longitude Latitude: Longitude: N37.8321150' N 78.553514'0' W Method for determining latitude/longitude: ❑ USGS topographic map (specify scale: ) ® EPA Web site ❑ GPS ❑ Other (please specify): Is the project located in Indian country? ❑ Yes ® No If yes, name of Reservation, or if not part of a Reservation, indicate "not applicable." N/A Is this project considered a federal facility? ❑ Yes ® No NPDES project or permit tracking number*: "(This is the unique identifying number assigned to your project by your permitting authority after you have applied for coverage under the appropriate National Pollutant Discharge Elimination System (NPDES) construction general permit.) 1.2 Contact Information/Responsable Parties Instructions: — List the operator(s), project managers, stormwater oontact(s), and person or organization that prepared the SWPPP. Indicate respective responsibilities, where appropriate. — Also, list subcontractors expected to work on -site. Notify subcontractors of stormwater requirements applicable to their work. Prepared by Blackwell Engineering, PLC Owner(s): Broc Troxell 7369 Dyers Mill Lane Scottsville, VA 24590 570-4120364 Contractor(s): Company Name: Contact: Address: City, State, Zip: Telephone: Fax: Company Name: Contact: Address: City, State, Zip: Telephone: Fax: Sub - Contractor(s): Company Name: Contact: Address: City, State, Zip: Telephone: Fax: This SWPPP Was Prepared By: Blackwell Engineering 566 East Market Street Harrisonburg, VA 22801 P 540-432-9555 F 540-434-7604 BE Job# 2888 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 Prepared by Blackwell Engineering, PLC 2 Storrawater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 1.3 Receiving Waters Instructions: — List the waterbody(s) that would receive stormwater from your site, including streams, rivers, lakes, coastal waters, and wetlands. — Indicate the location of all waters, including wetlands, on the site map. — Note any stream crossings, if applicable. — List the storm sewer system or drainage system that stormwater from your site could discharge to and the waterbody(s) that it ultimately discharges to. — If any of the waterbodies above are impaired and/or subject to Total Maximum Daily Loads (TMDLs), please list the pollutants causing the impairment and any specific requirements in the TMDL(s) that are applicable to construction sites. Your SWPPP should specifically include measures to prevent the discharge of these pollutants. — Also, for more information and a list of TMDL contacts and links by state, visit www.epa.gov/npdes/stormwater/tmdl. Description of receiving waters: Middle James- Buffalo Waterway Pollutants: Middle James- Buffalo: E. Coli Due to these pollutants: • Permanent or temporary soil stabilization shall be applied to denuded areas within seven (7) days after final grade is reached on any portion of the site; • Nutrients (e.g., fertilizers) shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; • Inspections shall be conducted at a frequency of (i) at least once every four (4) business days or (ii) atleast once every (5) business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day; and 1.4 Potential Sources of Pollution Instructions: — Identify and list all potential sources of sediment, which may reasonably be expected to affect the quality of stormwater discharges from the construction site. — Identify and list all potential sources of pollution, other than sediment, which may reasonably be expected to affect the quality of stormwater discharges from the construction site. Potential pollutants and sources, including sediment, to stormwater runoff. Prepared by Blackwell Engineering, PLC Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 • Clearing, grading, excavating and unstabilized areas • Paving operations • Concrete washout and waste • Structure construction, painting and cleaning • Demolition and debris disposal • Dewatering operations • Drilling and blasting operations • Material delivery and storage • Material use during building process • Solid waste (trash and debris) • Hazardous waste • Contaminated spills • Sanitary and septic waste • Vehicle/equipment fueling and maintenance • Vehicle/equipment use and storage • Landscaping operations 1.5 Historic Preservation Instructions: — Check by county for historical registries http://w m.dhr.virginia.goy/registers/register counties cities.htm — Northern Regional Preservation Office Serving the Shenandoah Valley and Northern Virginia P.O. Box 519 (for deliveries: 5357 Main Street) Stephens City, VA 22655 — Phone: (540) 868-7030 Fax: (540) 868-7033 Are there any historic sites on or near the construction site? ❑ Yes ® No Prepared by Blackwell Engineering, PLC M Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 1.6 Maps Instructions: — Attach site maps. For most projects, a series of site maps is recommended. The first should show the undeveloped site and its current features. An additional map or maps should be created to show the developed site or for more complicated sites show the major phases of development. These maps should include the following: — Direction(s) of stormwater flow and approximate slopes before and after major grading activities; — Areas and timing of soil disturbance; — Areas that will not be disturbed; — Natural features to be preserved; — Locations of major structural and non-structural BMPs identified in the SWPPP; — Locations and timing of stabilization measures; — Locations of off -site material, waste, borrow, or equipment storage areas; — Locations of all waters of the United States, including wetlands; — Locations where stormwater discharges to a surface water; — Locations of storm drain inlets; and — Areas where final stabilization has been accomplished. See Appendix A for an aerial photograph and a USGS topographic map or terrain map. Prepared by Blackwell Engineering, PLC 5 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 1.7 Endangered Species Certification Instructions: — Check endangered species by county at hftp://www.fws.gov/northeasUvirginiafield/County Lists.html — If a non -insect animal may occur in your project area, you should coordinate with the Virginia Department of Game and Inland Fisheries. If a plant or an insect may occur in your project area, you should coordinate with the Virginia Department of Conservation and Recreation, Division of Natural Heritage. The state agencies listed below will review their databases (they have separate databases, so you should check with both agencies). VA Dept of Game and Inland Fisheries Environmental Services Section P.O. Box 11104 Richmond, VA 23230 (804)367-1000 VA Dept of Conservation and Recreation Division of Natural Heritage 217 Governor St., 2nd Floor Richmond, VA 23219 (804)786-7951 Are endangered or threatened species and critical habitats on or near the project area? ❑ Yes ❑ No ® Undetermined Describe how this determination was made: Endangered or threatened species are in the City of Scottsville, Albemarle County and surrounding counties. The determination that these species are on or near the site cannot be documented and is therefore undetermined. The following describe the species and/or critical habitat in Albemarle County: Species Description: Indiana Bat The length of the Indiana bat's head and body ranges from 1.5 to 2 inches, and the animal weighs about 1/4 of an ounce. These bats are very difficult to distinguish from other species, especially the more common little brown bat (Myotis lucifugus), unless examined closely. The size of the feet, the length of the toe hairs, and the presence of a keel on the calcar are characteristics used to differentiate the Indiana bat from other bats. Indiana bats live an average of 5 to 9 years, but some have reached 14 years of age. It can have fur from black to chestnut with a light gray to cinnamon belly. Unlike other common bats with brown hair and Prepared by Blackwell Engineering, PLC 0 Storrawater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 black lip, the Indiana bat has brown hair and pink lips, which is helpful for identification. Scientific Name: Myotis sodalist Status: LE — Endangered Conservation: Decreases in Indiana bat populations have been caused by several factors. Unfortunately, most are the result of human activity. Indiana bats suffered losses in the past because humans altered cave entrances. Structures built to restrict human access to caves have also hindered the movement of bats. These structures also cause changes in air flow, temperatures, and humidity levels and make caves less suitable for bats. Human disturbance is always a factor with hibernating bats, and because Indiana bats gather together in large numbers during the winter, they are even more vulnerable to disturbance. Thousands of Indiana bats have also died at the hands of vandals. The most important hibernacula are now protected. However, Indiana bat numbers continue to decline. Some bats are lost periodically to flooding caused by natural events or human activity. Loss of forest habitat may be affecting maternity and foraging areas. As with all bats that feed primarily on insects, Indiana bats have probably suffered declines due to use of pesticides. Species Description: Madison Cave Isopod Description The only member of the genus Antrolana, the Madison Cave isopod, A. lira, is a white, shrimp -like crustacean lacking eyes. This cave -adapted (troglobitic) isopod grows up to 0.4 in (1.02 cm) in length, making it among the longer, and the largest, subterranean isopods in the eastern United States. Females are slightly larger than males. The body is flattened, compact, and approximately three times longer than it is broad. Habitat The Madison Cave isopod inhabits freshwater, subterranean pools, which are fed primarily by an aquifer. Little is known of the physical and chemical conditions of its habitat. The Prepared by Blackwell Engineering, PLC 7 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 temperature of the water ranges from 51.8-57.2°F (I I-14°C), typical of groundwater for the latitude, and the water is saturated with calcium carbonate, a condition also typical of groundwater in areas of limestone. The level of the karst aquifers can fluctuate for tens of meters at some sites. The extent of the recharge zone of the aquifer at any site is unknown. Biologists have observed a slow seepage of water from Madison Cave pools into the nearby South River, a tributary of the South Fork Shenandoah River. Water levels in the cave vary somewhat with the river flow. For instance, two habitat pools found in Madison Cave have decidedly different depths: One is about 35 ft (11 m) deep, the other 75 ft (23 m) deep. Another habitat pool, in Stegers Fissure, is quite deep, at 100 ft (30.4 m). Madison Cave —until 1990 thought to be the species' only habitat —was the first cave ever mapped in the United States, and the mapper was Thomas Jefferson (president of the United States, 1801-1809). George Washington (president of the United States, 1789-1797) also visited the cave and left his signature on the cave wall. Scientific Name: Status: Conservation: Antrolana lira LT — Threatened Madison Saltpeter Cave is protected through cooperation between the property owner and cave conservation organizations. The cave entrance is protected by a steel gate, and all visits to the cave must be approved for scientific or educational purposes. In 1995, a draft Recovery Plan was announced, developed to protect the isopod's population from potential threats to the quality of its deep karst aquifer habitat, thereby enabling the removal of the species from the federal list of endangered and threatened wildlife and plants. According to the plan, delisting may be considered when: (1) populations of Madison Cave isopod and groundwater quality at Front Royal Caverns, Linville Quarry Cave No. 3, and Madison Saltpeter Cave/Stegers Fissure are shown to be stable over a 10-year monitoring period; (2) the recharge zone of the deep karst aquifer at each of these population sites is protected from all significant contamination sources; and (3) sufficient population sites are protected to maintain the genetic diversity of the species. Prepared by Blackwell Engineering, PLC Storrawater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 Recovery activities designed to achieve these objectives include: (1) determining the number of genetic populations, (2) searching for additional populations, (3) identifying potential sources and entry points of contamination of the deep karst aquifer habitat, (4) protecting known populations and habitats from a watershed perspective, (5) collecting baseline ecological data for management and recovery, and (6) implementing a program to monitor recovery progress and future needs. Contingent on vigorous implementation of all recovery tasks, the plan reports that full recovery is anticipated by 2005. Species Description: Northeastern Bulrush This tall, leafy plant with erect stems reaches 47 inches in height. The clusters of brown flowers have no petals but are surrounded by six rigid, barbed bristles, which is the identifying characteristic of this plant. Another field clue that helps to distinguish this from other bulrushes is the arching rays of the flower cluster. The northeastern bulrush is a perennial member of the Sedge Family (Cyperaceae). It's considered a "leafy" bulrush because of its conspicuous leaves, unlike those of most other bulrushes. This plant was identified as a new species in 1962, by Dr. Alfred E. Schuyler of the Pennsylvania Academy of Natural Sciences. Flowering stems are produced from short, woody, underground rhizomes. Flowers appear in June and July, and seeds set between July and September. It most often reproduces vegetatively, when new plants develop on stems that have fallen to the ground. Scientific Name: Status: Conservation: Scirpus ancistrochaetus LE — Endangered These small, wetland habitats are currently exempted from many of the permit requirements of the Clean Water Act. If they support a federally listed species such as northeastern bulrush, however, the U. S. Army Corps of Engineers, which administers the act, must consult with the U. S. Fish and Wildlife Service (FWS) before issuing a permit to alter the wetland. The FWS has notified the Corps of Engineers of the location of northeastern bulrush populations so that remaining sites can be Prepared by Blackwell Engineering, PLC 0 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 Species Description: Virginia Big -eared Bat Plecotus townsendii is a medium-sized bat with forearms measuring 39 to 48 millimeters (mm) long and weighing 7 to 12 grams. Total body length is 98 mm, the tail is 46 mm, and the hind foot is 11 mm long. This bat's long ears (over 2.5 centimeters) and facial glands on either side of the snout are quite distinctive. Fur is light to dark brown depending upon the age of the individual and the subspecies. The only other eastern bat that resembles the Ozark or the Virginia big -eared bat is P. rafinesquii (Rafinesque's big -eared bat). Rafinesque's big -eared bat has toe hairs that extend beyond the end of the toes and the dorsal fur is gray rather than brown. The belly fur of Rafinesque's big -eared bat is white or whitish rather than light brown or buff. The Ozark and Virginia big -eared bats do not have overlapping ranges. Copulation occurs in the fall and winter and the females store the sperm until ovulation in late winter or spring. Gestation takes about 3 months and a single pup is born in May or June. Development is fairly rapid and the young are on their own within 2 months. Scientific Name: Status: Conservation: Corynorhinus townsendii virginianus LE — Endangered The growing popularity of spelunking is a tremendous threat to these bats. Very intolerant of disturbance in summer and winter. Former decline probably is attributable to human intrusion into caves, which depletes energy reserves of aroused bats and may lead to cave abandonment if disturbance is frequent. Forest defoliation by gypsy moth could adversely affect native Lepidoptera and impact bat population. In some areas, feral cats prey on the bats. Species Description: Virginia Sneezeweed Virginia sneezeweed is a rare wildflower found only in Virginia. An herbaceous perennial in the Aster family, its stems grow 1.5 to 3.5 feet above a rosette of basal leaves. Coarse hairs are visible on the basal and lower stem leaves. The basal leaves may be broad in the middle tapering towards the ends, but others may appear oblong. Stem leaves are lance - shaped, and become progressively smaller as they go up the stem. The stems are Prepared by Blackwell Engineering, PLC 10 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 "winged," the wings being continuous with the bases of the stem leaves. The flower ray petals are yellow, and wedge-shaped with three lobes at the ends. The central disk of the flower is nearly ball -shaped. Flowering occurs from July to October. Virginia sneezeweed closely resembles common sneezeweed (Helenium autumnale). The two are differentiated by a number of characteristics including leaf shape, stem and leaf hairs, and habitat requirements. Scientific Name: Helenium virginicum Status: LT — Threatened Conservation: Virginia sneezeweed is listed as endangered in Virginia, and is also Federally listed as threatened. Five populations are within the George Washington and Jefferson National Forests and many others are found on private lands. The life cycle of Virginia sneezeweed is closely tied to the natural hydrologic regime of the ponds and the low nutrient conditions of the acidic soils. Wetland habitats are vulnerable to land uses which may result in erosion, siltation, toxic or nutrient runoff, permanent flooding, dredging, or draining. Landowners can protect sinkhole ponds against these effects by following Best Management Practices which maintain or protect water quality and quantity in these fragile wetland communities. Land uses in surrounding uplands should be carefully evaluated to avoid activities that may result in hydrologic changes and increased nutrient inputs into the ponds. If you find a plant you think may be Virginia sneezeweed, take note of the location as precisely as possible and photograph the plant. DO NOT PICK THE PLANT! Notify the Virginia Department of Conservation and Recreation's Division of Natural Heritage. Landowners and managers can take positive steps to ensure conservation of Virginia sneezeweed and its habitat. Knowledge of the presence of rare species and of Best Management Practices for their habitat contributes to informed land use decisions. DCR's Division of Natural Heritage maintains a database on the presence of our state's natural heritage occurrences. Natural Heritage inventory biologists, stewardship, information, and protection staff can assist landowners with questions regarding rare species and sensitive habitats. The staff also provides information and expertise concerning conservation and ecological management practices which help Prepared by Blackwell Engineering, PLC 11 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 to maintain ensure Virginian's preserve and pass on to future generations the tremendous gifts of life which are in our care. (Note, if species are on or near your project site, EPA strongly recommends that the site operator work closely with the appropriate field office of the U.S. Fish and Wildlife Service or National Marine Fisheries Service. For concerns related to state or tribal listing of species, please contact a state or tribal official.) 1.8 Miscellaneous Details for Pollution Prevention Qualified personnel shall inspect for evidence that the approved erosion and sediment control plan has not been properly implemented. The following should be looked for/implemented: (a) Concentrated flows of stormwater in conveyances such as rills, rivulets or channels that have not been filtered, settled, or similarly treated prior to discharge , or evidence thereof. (b) Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge. (c) Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected. (d) Sediment deposition on any property (including public and private streets) outside of the construction activity covered by this general permit. (e) Required stabilization has not been initiated or completed on portions of the site. (f) Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin. (g) Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap. (h) Land disturbance outside of the approved area to be disturbed. (i) Pollutant generating activities identified in the pollution prevention plan for the proper implementation, maintenance and effectiveness of the procedures and practices. Prepared by Blackwell Engineering, PLC 12 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 0) Pollutant generating activities not identified in the pollution prevention plan. (k) Identify and document the presence of any evidence of the discharge of pollutants prohibited by this general permit. (1) Minimize exposure of building materials, building products, construction wastes, trash, landscape materials, fertilizers, pesticides, herbicides, detergents, sanitary waste, and other materials present on the site to precipitation. The operator shall implement the corrective action(s) identified as a result of an inspection as soon as practicable but no later than seven days after discovery. Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site. Prepared by Blackwell Engineering, PLC 13 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 SECTION 2: EROSION AND SEDIMENT CONTROL BMPS Instructions: Describe the BMPs that will be implemented to control pollutants in stormwater discharges. For each major activity identified, do the following ✓ Clearly describe appropriate control measures. ✓ Describe the general sequence during the construction process in which the measures will be implemented. ✓ Describe the maintenance and inspection procedures that will be used for that specific BMP. ✓ Include protocols, thresholds, and schedules for cleaning, repairing, or replacing damaged or failing BMPs. ✓ Identify staff responsible for maintaining BMPs. ✓ (If your SWPPP is shared by multiple operators, indicate the operator responsible for each BMP.) Categorize each BMP under one of the following 10 areas of BMP activity as described below: 2.1 Minimize disturbed area and protect natural features and soil 2.2 Phase Construction Activity 2.3 Control Stormwater flowing onto and through the project 2.4 Stabilize Soils 2.5 Protect Slopes 2.6 Protect Storm Drain Inlets 2.7 Establish Perimeter Controls and Sediment Barriers 2.8 Retain Sediment On -Site and Control Dewatering Practices 2.9 Establish Stabilized Construction Exits 2.10 Any Additional BMPs Note the location of each BMP on your site map(s). For any structural BMPs, you should provide design specifications and details and refer to them. Stabilization measures are to be applied as soon as possible. 2.1 Minimize Disturbed Area and Protect Natural Features and Soil Instructions: — Describe the areas that will be disturbed with each phase of construction and the methods (e.g., signs, fences) that you will use to protect those areas that should not be disturbed. Describe natural features identified earlier and how each will be protected during construction activity. Also describe how topsoil will be preserved. Include these areas and associated BMPs on your site map(s) also. Choose a building block. Prepared by Blackwell Engineering, PLC 14 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 2.2 Phase Construction Activity Instructions: — Describe the intended construction sequencing and timing of major activities, including any opportunities for phasing grading and stabilization activities to minimize the overall amount of disturbed soil that will be subject to potential erosion at one time. Also, describe opportunities for timing grading and stabilization so that all or a majority of the soil disturbance occurs during a time of year with less erosion potential (i.e., during the dry or less windy season). (For more information, see SWPPP Guide, Chapter 4, ESC Principle 2.) It might be useful to develop a separate, detailed site map for each phase of construction N/A — See ESN for more information. 2.3 Control Stormwater Flowing onto and through the Project Instructions: — Describe structural practices (e.g., diversions, berms, ditches, storage basins) including design specifications and details used to divert flows from exposed soils, retain or detain flows, or otherwise limit runoff and the discharge of pollutants from exposed areas of the site. BMP Description: Outlet Protection Structurally lined aprons or other acceptable energy dissipating devices placed at the outlets of pipes or paved channel sections used to prevent scour at stormwater outlets, to protect the outlet structure, and to minimize the potential for downstream erosion by reducing the velocity and energy of concentrated stormwater flows. Applicable to the outlets of all pipes and engineered channel sections. The structurally lined aprons at the outlets of pipes and paved channel sections shall be constructed as shown on the plans. Installation Schedule: Maintenance and Inspection: The lined apron at the outlets of pipes and paved channel sections shall be inspected weekly and/or after each rainfall to ensure the allowance of continuous and uninhibited water flow. If the outlet is blocked, the debris shall be removed. BMP Description: Temporary Diversion Dike An earthen perimeter control usually consists of a dike or a combination dike and channel Prepared by Blackwell Engineering, PLC 15 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 constructed along the perimeter of and within the disturbed part of a site. An earthen perimeter control is a ridge of compacted soil, often accompanied by a ditch or swale with a vegetated lining, at the top or base of a sloping disturbed area. Depending on its location and the topography of the landscape, an earthen perimeter control can achieve one of two goals. When on the upslope side of a site, earthen perimeter controls help to prevent surface runoff from entering a disturbed construction site. An earthen structure located upslope can improve working conditions on a construction site. It can prevent an increase in the total amount of sheet flow runoff traveling across the disturbed area and thereby lessen erosion on the site. Earthen perimeter control structures also can be located on the downslope side of a site. They divert sediment -laden runoff created onsite to onsite sediment -trapping devices, preventing soil loss from the disturbed area. These control practices are called temporary diversion dikes, earth dikes, and interceptor dikes. No matter what they are called„ all earthen perimeter controls are constructed in a similar way with a similar objective --to control the velocity or route (or both) of sediment -laden stormwater runoff. Installation Schedule: Maintenance and Inspection: 2.4 Stabilize Soils Instructions: Inspect earthen diversion dikes after each rainfall to ensure continued effectiveness. Maintain dikes at their original height. Repair any decrease in height due to settling or erosion immediately. To remain effective, earth dikes must be compacted at all times. Regardless of rainfall frequency, inspect dikes at least once every 2 weeks for evidence of erosion or deterioration. — Describe controls (e.g., interim seeding with native vegetation, hydroseeding) to stabilize exposed soils where construction activities have temporarily or permanently ceased. Also describe measures to control dust generation. Avoid using impervious surfaces for stabilization whenever possible. BMP Description: Temporary Seeding Prepared by Blackwell Engineering, PLC 16 Storrawater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 The establishment of a temporary vegetative cover on disturbed areas by seeding with appropriate rapidly growing annual plants used to reduce erosion and damage from sediment runoff. Applicable where exposed soil surfaces are not to be fine -graded for periods longer than 14 days. Such areas include denuded areas, soil stockpiles, dikes, damn, sides of sediment basins, temporary road banks, etc. A permanent vegetative cover shall be applied to areas that will be left dormant for a period of more than a year. The seeding shall be used as shown on the plans. ❑ Permanent ® Temporary Installation Schedule: Maintenance and Inspection: The seeding shall be inspected each week or after each rainfall to make sure that erosion is not occurring. The plants shall be watered daily and mowed frequently unless otherwise directed. Responsible Staff. BMP Description: Permanent Seeding The establishment of perennial vegetative cover on disturbed areas by planting seed used to: 1. Reduce erosion and decrease sediment yield from disturbed areas. 2. Permanently stabilize disturbed areas in a manner that is economical, adaptable to site conditions, and allows selection of the most appropriate plant materials. 3. Improve wildlife habitat. 4. Enhance natural beauty. Applicable where: 1. Disturbed areas where permanent, long-lived vegetative cover is needed to stabilize the soil. 2. Rough -graded areas which will not be brought to final grade for a year or more. ❑ Permanent ❑ Temporary Installation Schedule: Maintenance and Inspection: High maintenance areas will be mowed frequently, limed and fertilized frequently and either receive intense use or require maintaining to an aesthetic standard. Grasses used for these situations must be fine -leaved and attractive in appearance, able Prepared by Blackwell Engineering, PLC 17 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 to form fight sod, and be long-lived perennials. They must be well -adapted to the geographic area where they are planted, because constant mowing puts turf under great stress. Low maintenance areas will be mowed infrequently or not a all; lime and fertilizer may not be applied on a regular basis; the areas will not be subjected to intense use, nor required to have a uniform appearance. These plants must be able to persists with little maintenance over long periods of time. BMP Description: Mulching Application of plant residues or other suitable materials to the soil surface used: 1. To prevent erosion by protecting the soil surface from raindrop impact and reducing the velocity of overland flow. 2. To foster the growth of vegetation by increasing available moisture and providing insulation against extreme heat and cold. Applicable: 1. Areas which have been permanently seeded should be mulched immediately following seeding. 2. Areas which cannot be seeded because of the season should be mulched to provide some protection to the soil surface. Organic mulch should be used, and the area then seeded as soon weather or seasonal conditions permit. It is not recommended that fiber mulch be used alone for this practice; at normal application rates it just simply does not provide the protection that is achieved using other types of mulch. 3. Mulch may be used together with plantings of trees, shrubs, or certain ground covers which do not provide adequate soil stabilization by themselves. 4. Mulch shall be used in conjunction with temporary seeding operations. ❑ Permanent ❑ Temporary Installation Schedule: Maintenance and Inspection: All mulches and soil coverings should be inspected periodically (particularly after rainstorms) to check for erosion. Where erosion is observed in mulched areas, additional mulch should be applied. Nets and mats should be inspected after rainstorms for Prepared by Blackwell Engineering, PLC 18 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 dislocation or failure. If washouts or breakage occur, re -install netting or matting as necessary after repairing damage to the slope or ditch. Inspections would take place up until grasses are firmly established. Where mulch is used in conjunction with ornamental plantings, inspect periodically throughout the year to determine if mulch if maintaining coverage of the soil surface; repair as needed. BMP Description: Surface Roughening Providing a rough soil surface with horizontal depressions created by operating a tillage or other suitable implement on the contour, or by leaving slopes in a roughened condition by not fine - grading them. Used to aid in establishment of vegetative cover with seed, to reduce runoff velocity and increase infiltration, and to reduce erosion and provide for sediment trapping. Applicable where: 1. All slopes steeper than 3:1 require surface roughening, either stair -step grading, grooving, furrowing, or tracking if they are to be stabilized with vegetation. 2. Areas with grades less steep than 3:1 should have the soil surface lightly roughened and loose to a depth of 2 to 4 inches prior to seeding. 3. Areas which have been graded and will not be stabilized immediately may be roughened to reduce runoff velocity until seeding takes place. 4. Slopes with a stable rock face do not require roughening or stabilization. The surface roughening practice shall be constructed and used as shown on the plans. ❑ Permanent ® Temporary Installation Schedule: Maintenance and Inspection: BMP Description: Topsoiling The surface roughening location shall be inspected at least once a week or after every rainfall to ensure continued erosion control. If the measure is ineffective, the surface shall be roughened again or a new measure shall be taken. Prepared by Blackwell Engineering, PLC 19 Storrawater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 Methods of preserving and using the surface layer of undisturbed soil often enriched in organic matter, in order to obtain a more desirable planting and growth medium. Applicable where: 1. The preservation or importation of topsoil is determined to be the most effective method of providing a suitable growth medium. 2. The subsoil or existing soil presents the following problems: a. The texture, pH, or nutrient balance of the available soil cannot be modified by reasonable means to provide an adequate growth medium. b. The soil material is too shallow to provide an adequate root zone and to supply necessary moisture and nutrients for plant growth. c. The soil contains substances potentially toxic to plant growth. 3. High -quality turf is desirable to withstand intense use or meet aesthetic requirements. 4. Ornamental plants will be established. 5. Only on slopes that are 2:1 or flatter unless other measures are taken to prevent erosion and sloughing. The topsoil will be used as shown on the plans. ❑ Permanent ❑ Temporary Installation Schedule: Maintenance and Inspection: The topsoil shall be inspected after every rainfall or at least once a week to ensure the surface layer of the soil is being preserved. If this method is ineffective, another measure shall be taken. Responsible Staff. 2.5 Protect Slopes Instructions: — Describe controls (e.g., erosion control blankets, tackifers) including design specifications and details that will be implemented to protect all slopes. Choose a building block. Prepared by Blackwell Engineering, PLC 20 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 2.6 Protect Storm Drain Inlets Instructions: — Describe controls (e.g., inserts, rock -filled bags, or block and gravel) including design specifications and details that will be implemented to protect all inlets receiving stormwater from the project during the entire project. BMP Description: Culvert Inlet Protection A sediment filter located at the inlet to storm sewer culverts. Used to: 1. To prevent sediment from entering, accumulating in and being transferred by a culvert and associated drainage system prior to permanent stabilization of a disturbed project area. 2. To provide erosion control at culvert inlets during the phase of a project where elevation and drainage patterns change, causing original control measures to be ineffective or in need of removal. Applicable where culvert and associated drainage system is to be made operational prior to permanent stabilization of the disturbed drainage area. Different types of structures are applicable to different conditions. Installation Schedule: Maintenance and Inspection: 1. The structure shall be inspected after each rain and repairs made as needed. 2. Aggregate shall be replaced or cleaned when inspection reveals that clogged voids are causing ponding problems which interfere with on -site construction. 3. Sediment shall be removed and the impoundment restored to its original dimensions when sediment has accumulated to one-half the design depth. Removed sediment shall be deposited in a suitable area and in such a manner that it will not erode and cause sedimentation problems. 4. Temporary structures shall be removed when they have served their useful purpose, but not before the up slope area has been permanently stabilized. Prepared by Blackwell Engineering, PLC 21 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 BMP Description: Storm Drain Inlet Protection A sediment filter or an excavated impounding area around a storm drain drop inlet or curb inlet used to prevent sediment from entering storm drainage systems prior to permanent stabilization of the disturbed area. Applicable where storm drain inlets are to be made operational before permanent stabilization of the corresponding disturbed drainage area. Different types of structures are applicable to different conditions. Installation Schedule: Maintenance and Inspection: 1. The structure shall be inspected after each rain and repairs made as needed. 2. Sediment shall be removed and the trap restored to its original dimensions when the sediment has accumulated to one half the design depth of the trap. Removed sediment shall be deposited in a suitable area and in such a manner that it will not erode. 3. Structures shall be removed and the area stabilized when the remaining drainage area has been properly stabilized. 2.7 Establish Perimeter Controls and Sediment Barriers Instructions: — Describe structural practices (e.g., silt fences or fiber rolls) including design specifications and details to filter and trap sediment before it leaves the construction site. BMP Description: Silt Fence A temporary sediment barrier consisting of a synthetic filter fabric stretched across and attached to supporting posts and entrenched used to: 1. To intercept and detain small amounts of sediment from disturbed areas during construction operations in order to prevent sediment from leaving the site. 2. To decrease the velocity of sheet flows and low -to -moderate level channel flows. Applicable: 1. Below disturbed areas where erosion would occur in the form of sheet and rill erosion. 2. Where the size of the drainage area is no more than one quarter acre per 100 feet of silt fence length; the maximum slope length behind the barrier is 100 feet; and the maximum gradient Prepared by Blackwell Engineering, PLC 22 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 behind the barrier is 50 percent (2:1). 3. In minor swales or ditch lines where the maximum contributing drainage area is no greater than 1 acre and flow is no greater than 1 cfs. 4. Silt fence will not be used in areas where rock or some other hard surface prevents the full and uniform depth anchoring of the barrier. Installation Schedule: Maintenance and Inspection: 1. Silt fences shall be inspected immediately after each rainfall and at least daily during prolonged rainfall. Any required repairs shall be made immediately. 2. Close attention shall be paid to the repair of damaged silt fence resulting from end runs and undercutting. 3. Should the fabric on a silt fence decompose or become ineffective prior to the end of the expected usable life and the barrier still be necessary, the fabric shall be replaced promptly. 4. Sediment deposits should be removed after each storm event. They must be removed when deposits reach approximately one-half the height of the barrier. S. Any sediment deposits remaining in place after the silt fence is no longer required shall be dressed to conform with the existing grade, prepared and seeded. 2.8 Retain Sediment On -Site Instructions: — Describe sediment control practices (e.g., sediment trap or sediment basin), including design specifications and details (volume, dimensions, outlet structure) that will be implemented at the construction site to retain sediments on -site. BMP Description: Temporary Sediment Basin A temporary barrier or dam with a controlled stormwater release structure formed by constructing an embankment of compacted soil across a drainage way used to detain sediment - laden runoff from disturbed areas in "wet'' and "dry" storage long enough for the majority of the sediment to settle out. Applicable below disturbed areas where the total contributing drainage area is equal to or greater than three (3) acres. There must be sufficient space and appropriate topography for the construction of a temporary impoundment. These structures are limited to a useful life of 18 months unless they are designed as permanent impoundments. It is recommended that these measures, by virtue of their potential to impound large volumes of Prepared by Blackwell Engineering, PLC 23 water, be designed by a qualified professional. Installation Schedule: Maintenance and Inspection: Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 The basin embankment should be checked regularly to ensure that it is structurally sound and has not been damaged by erosion or construction equipment. The emergency spillway should be checked regularly to ensure that its lining is well established and erosion -resistant. The basin should be checked after each runoff - producing rainfall for sediment cleanout. When the sediment reaches the clean -out level, it shall be removed and properly disposed of. 2.9 Establish Stabilized Construction Exits Instructions: — Describe location(s) of vehicle entrance(s) and exit(s), procedures to remove accumulated sediment off -site (e.g., vehicle tracking), and stabilization practices (e.g., stone pads or wash racks or both) to minimize off -site vehicle tracking of sediments and discharges to stormwater. Prepared by Blackwell Engineering, PLC 24 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 BMP Description: Construction Road Stabilization The temporary stabilization of access roads, subdivision roads, parking areas, and other onsite vehicle transportation routes with stone immediately after grading. Used: 1. To reduce the erosion of temporary roadbeds by construction traffic during wet weather. 2. To reduce the erosion and subsequent regrading of permanent roadbeds between the time of initial grading and final stabilization. Applicable wherever stone -base roads or parking areas are constructed, whether permanent or temporary, for use by construction traffic. Installation Schedule: Maintenance and Inspection: Both temporary and permanent roads and parking areas may require periodic top dressing with new gravel. Seeded areas adjacent to the roads and parking areas should be checked periodically to ensure that a vigorous stand of vegetation is maintained. Roadside ditches and other drainage structures should be checked regularly to ensure that they do not become clogged with silt or other debris. Prepared by Blackwell Engineering, PLC 25 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 SECTION 3: GOOD HOUSEKEEPING BMPS Instructions: — Describe the key good housekeeping and pollution prevention (P2) BMPs that will be implemented to control pollutants in stormwater. — Categorize each good housekeeping and pollution prevention (P2) BMP under one of the following seven categories: 3.1 Material Handling and Waste Management 3.2 Establish Proper Building Material Staging Areas 3.3 Designate Washout Areas 3.4 Establish Proper EquipmenWehicle Fueling and Maintenance Practices 3.5 Allowable Non-Stormwater Discharges and Control EquipmenWehicle Washing 3.6 Spill Prevention and Control Plan 3.7 Cleaning Roads 3.8 Any Additional BMPs 3.1 Material Handling and Waste Management Instructions: — Describe measures (e.g., trash disposal, sanitary wastes, recycling, and proper material handling) to prevent the discharge of solid materials to receiving waters, except as authorized by a permit issued under section 404 of the CWA. BMP Description: Hazardous Waste Materials All hazardous waste materials such as oil filters, petroleum products, paint, and equipment maintenance fluids will be stored in structurally sound and sealed shipping containers, within the hazardous materials storage area. Hazardous waste materials will be stored in appropriate and clearly marked containers and segregated from other non -waste materials. Secondary containment will be provided for all waste materials in the hazardous materials storage area and will consist of commercially available spill pallets. Additionally, all hazardous waste materials will be disposed of in accordance with federal, state, and municipal regulations. Hazardous waste materials will not be disposed of into the on -site dumpsters. All personnel will be instructed, during tailgate training sessions, regarding proper procedures for hazardous waste disposal. Notices that state these procedures will be posted in the office trailer and the individual who manages day-to-day site operations will be responsible for seeing that these procedures are followed. Prepared by Blackwell Engineering, PLC 26 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 Installation Schedule: Shipping containers used to store hazardous waste materials will be installed once the site materials storage area has been installed. Maintenance and Inspection: The hazardous waste material storage areas will be inspected weekly and after storm events. The storage areas will be kept clean, well organized, and equipped with ample cleanup supplies as appropriate for the materials being stored. Material safety data sheets, material inventory, and emergency contact numbers will be maintained in the office trailer. Responsible Staff. BMP Description: Recycling Wood pallets, cardboard boxes, and other recyclable construction scraps will be disposed of in a designated dumpster for recycling. The dumpster will have a secure watertight lid, be placed away from stormwater conveyances and drains and meet all local and state solid -waste management regulations. Only solid recyclable construction scraps from the site will be deposited in the dumpster. All personnel will be instructed, during tailgate training sessions, regarding the correct procedure for disposal of recyclable construction scraps. Notices that state these procedures will be posted in the office trailer, and the individual who manages day-to-day site operations will be responsible for seeing that these procedures are followed. Installation Schedule: Designated recycling dumpsters will be installed once the combined staging area has been established. Maintenance and Inspection: The recycling dumpster will be inspected weekly and immediately after storm events. The recycling dumpster will be emptied weekly and taken to an approved recycling center. If recyclable construction wastes are exceeding the dumpster's capacity, the dumpsters will be emptied more frequently. Responsible Staff. BMP Description: Sanitary Waste Temporary sanitary facilities (portable toilets) will be provided at the site throughout the construction phase. The toilets will be in the staging area. The portable toilets will be located Prepared by Blackwell Engineering, PLC 27 Storrawater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 away from a concentrated flow paths and traffic flow and will have collection pans underneath as secondary containment. Installation Schedule: The portable toilets will be brought to the site once the staging area has been established. Maintenance and Inspection: All sanitary waste will be collected from the portable facilities a minimum of three times per week. The portable toilets will be inspected weekly for evidence of leaking holding tanks. Toilets with leaking holding tanks will be removed from the site and replaced with new portable toilets. Responsible Staff. BMP Description: Waste Materials All waste materials will be collected and disposed of into trash dumpsters in a designated materials storage area. Dumpsters will have a secure watertight lid, be placed away from stormwater conveyances and drains, and meet all federal, state, and municipal regulations. Only trash and construction debris from the site will be deposited in the dumpster. No construction materials will be buried on -site. All personnel will be instructed, during tailgate training sessions, regarding the correct disposal of trash and construction debris. Notices that state these practices will be posted in the office trailer and the individual who manages day -today site operations will be responsible for seeing that these practices are followed. Installation Schedule: Trash dumpsters will be installed once the materials storage area has been established. Maintenance and Inspection: The dumpsters will be inspected weekly and immediately after storm events. The dumpster will be emptied weekly. If trash and construction debris are exceeding the dumpster's capacity, the dumpsters will be emptied more frequently. Responsible Staff. Prepared by Blackwell Engineering, PLC 28 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 3.2 Establish Proper Building Material Staging Areas Instructions: — Describe construction materials expected to be stored on -site and procedures for storage of materials to minimize exposure of the materials to stormwater. BMP Description: Materials Storage Area Construction equipment and maintenance materials will be stored at the combined staging area and materials storage areas. Gravel bag berms will be installed around the perimeter to designate the staging and materials storage area. A watertight shipping container will be used to store hand tools, small parts, and other construction materials. Nonhazardous building materials such as packaging material (wood, plastic, and glass), and construction scrap material (brick, wood, steel, metal scraps, and pipe cuttings) will be stored in a separate covered storage facility adjacent to the shipping container. All hazardous -waste materials such as oil filters, petroleum products, paint, and equipment maintenance fluids will be stored in structurally sound and sealed containers under cover within the hazardous materials storage area. Very large items, such as framing materials and stockpiled lumber, will be stored in the open in the materials storage area. Such materials will be elevated on wood blocks to minimize contact with runoff. Installation Schedule: The materials storage area will be installed after grading and before any infrastructure is constructed at the site. Maintenance and Inspection: The storage area will be inspected weekly and after storm events. The storage area will be kept clean, well organized, and equipped with ample cleanup supplies as appropriate for the materials being stored. Perimeter controls, containment structures, covers, and liners will be repaired or replaced as needed to maintain proper function. Responsible Staff. Prepared by Blackwell Engineering, PLC 29 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 3.3 Designate Washout Areas Instructions: — Describe location(s) and controls to eliminate the potential for discharges from washout areas for concrete mixers, paint, stucco, and so on. BMP Description: Concrete Washout A designated temporary, above -grade concrete washout area will be constructed with a recommended minimum length and minimum width of 10 feet, but with sufficient quantity and volume to contain all liquid and concrete waste generated by washout operations. The washout area will be lined with plastic sheeting at least 10 mils thick and free of any holes or tears. Signs will be posted marking the location of the washout area to ensure that concrete equipment operators use the proper facility. Concrete pours will not be conducted during or before an anticipated storm event. Concrete mixer trucks and chutes will be washed in the designated area or concrete wastes will be properly disposed of off -site. When the temporary washout area is no longer needed for the construction project, the hardened concrete and materials used to construct the area will be removed and disposed of according to the maintenance section below, and the area will be stabilized. Installation Schedule: Maintenance and Inspection: The washout area will be constructed before concrete pours occur at the site. The washout areas will be inspected daily to ensure that all concrete washing is being discharged into the washout area, no leaks or tears are present, and to identify when concrete wastes need to be removed. The washout areas will be cleaned out once the area is filled to 75 percent of the holding capacity. Once the area's holding capacity has been reached, the concrete wastes will be allowed to harden; the concrete will be broken up, removed, and disposed of properly. The plastic sheeting will be replaced if tears occur during removal of concrete wastes from the washout area. Prepared by Blackwell Engineering, PLC 30 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 3.4 Establish Proper Equipment/Vehicle Fueling and Maintenance Practices Instructions: — Describe equipment/vehicle fueling and maintenance practices that will be implemented to control pollutants to stormwater (e.g., secondary containment, drip pans, and spill kits) BMP Description: Vehicle/Equipment Fueling and Maintenance Several types of vehicles and equipment may be used on -site throughout the project, including graders, scrapers, excavators, loaders, paving equipment, rollers, trucks and trailers, backhoes, and forklifts. All major equipment/vehicle fueling and maintenance will be performed off -site. A small, 20-gallon pickup bed fuel tank will be kept on -site in the combined staging area. When vehicle fueling must occur on -site, the fueling activity will occur in the staging area. Only minor equipment maintenance will occur on -site. All equipment fluids generated from maintenance activities will be disposed of into designated drums stored on spill pallets in accordance with Part 3.1. Absorbent, spill -cleanup materials and spill kits will be available at the combined staging and materials storage area. Drip pans will be placed under all equipment receiving maintenance and vehicles and, when necessary, equipment parked overnight. Installation Schedule: BMPs implemented for equipment and vehicle maintenance and fueling activities will begin at the start of the project. Maintenance and Inspection: Inspect equipment/vehicle storage areas and fuel tank weekly and after storm events. Vehicles and equipment will be inspected on each day of use. Leaks will be repaired immediately, or the problem vehicle(s) or equipment will be removed from the project site. Keep ample supply of spill -cleanup materials on -site and immediately clean up spills and dispose of materials properly. Responsible Staff. Prepared by Blackwell Engineering, PLC 31 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 3.5 Control Equipment/Vehicle Washing Instructions: — Describe equipment/vehicle washing practices that will be implemented to control pollutants to stormwater. BMP Description: All equipment and vehicle washing will be performed off -site. Installation Schedule: N/A Maintenance and N/A Inspection: Responsible Staff. 3.6 Spill Prevention and Control Plan Instructions: — Describe the spill prevention and control plan to include ways to reduce the chance of spills, stop the source of spills, contain and clean up spills, dispose of materials contaminated by spills, and train personnel responsible for spill prevention and control. BMP Description: Spill Prevention and Control Procedures I. Employee Training: All employees will be trained in spill prevention and control procedures during specified training sessions II. Vehicle Maintenance: Vehicles and equipment will be maintained off -site. All vehicles and equipment including subcontractor vehicles will be checked for leaking oil and fluids. Vehicles leaking fluids will not be allowed on -site. Drip pans will be placed under all vehicles and equipment that are parked overnight. III. Hazardous Material Storage: Hazardous materials will be stored in accordance with Section 3, Part 1 and federal and municipal regulations. IV. Spill Kits: Spill kits will be within the materials storage area and concrete washout areas. V. Spills: All spills will be cleaned up immediately upon discovery. Spent absorbent materials and rags will be hauled off -site immediately after the spill is cleaned up for disposal. Spills large enough to discharge to surface water will be reported to the National Response Center at 1-800-424-8802. Prepared by Blackwell Engineering, PLC 32 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 VI. Material safety data sheets, a material inventory, and emergency contact information will be maintained at the on -site project trailer. Installation Schedule: The spill prevention and control procedures will be implemented once construction begins on -site. Maintenance and Inspection: All personnel will be instructed regarding the correct procedures for spill prevention and control. Notices that state these practices will be posted, and the individual who manages day- to-day site operations will be responsible for seeing that these procedures are followed. Responsible Staff. 3.7 Paved or Public Roads Paved and/or Public Roads must be swept so that waste material and debris is removed before any liquid wash solution (including water) is used to clean the road. 3.8 Any Additional BMPs Instructions: — Describe any additional BMPs that do not fit into the above categories. Indicate the problem they are intended to address. BMP Description: No Additional BMPs were identified Installation Schedule: I N/A Maintenance and I N/A Prepared by Blackwell Engineering, PLC 33 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 3.9 Allowable Non-Stormwater Discharge Management Instructions: Identify all allowable sources of non-stormwater discharges that are not identified. The allowable non- stormwater discharges identified might include the following (see your permit for an exact list): ✓ Waters used to wash vehicles where detergents are not used ✓ Water used to control dust ✓ Potable water including uncontaminated water line flushings ✓ Routine external building wash down that does not use detergents ✓ Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (unless all spilled material has been removed) and where detergents are not used ✓ Uncontaminated air conditioning or compressor condensate ✓ Uncontaminated ground water or spring water ✓ Foundation or footing drains where flows are not contaminated with process materials such as solvents ✓ Uncontaminated excavation dewatering ✓ Landscape irrigation Identify measures used to eliminate or reduce these discharges and the BMPs used to prevent them from becoming contaminated. Any changes in construction activities that produce other allowable non-stormwater discharges will be identified, and the SWPPP will be amended and the appropriate erosion and sediment control will be implemented. Prepared by Blackwell Engineering, PLC 34 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 SECTION 4: FINAL STABILIZATION AND POST -CONSTRUCTION all Instructions: Describe all post -construction stormwater management measures that will be installed during the construction process to control pollutants in stormwater discharges after construction operations have been completed. Examples of post -construction BMPs include the following: ✓ Biofilters ✓ Detention/retention devices ✓ Earth dikes, drainage swales, and lined ditches ✓ Infiltration basins ✓ Porous pavement ✓ Other proprietary permanent structural BMPs ✓ Outlet protection/velocity dissipation devices ✓ Slope protection ✓ Vegetated strips and/or swales Describe how low -impact designs or smart growth considerations have been incorporated into the design. For any structural BMPs, you should have design specifications and details and refer to them. Open Space, and a dry pond will be stormwater management measures that will remain after construction operations have been completed. SECTION 5: INSPECTIONS 5.1 Inspections Instructions: — Identify the individual(s) responsible for conducting inspections and describe their qualifications. — Describe the frequency that inspections will occur at your site including any correlations to storm frequency and intensity. — You should also document the repairs and maintenance that you undertake as a result of your inspections. These actions can be documented in the corrective action log described in Part 5.3 below. L Inspection Personnel. Identify the person(s) who will be responsible for conducting inspections and describe their qualifications: Name: Prepared by Blackwell Engineering, PLC 35 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 Qualifications: 2. Inspection Schedule and Procedures: Describe the inspection schedules and procedures you have developed for your site (include frequency of inspections for each BMP or group of BMPs, indicate when you will inspect, e.g., beforelduringland after rain events, spot inspections): Inspections shall be conducted at least every four business days. Where areas have been temporarily stabilized or runoff is unlikely due to winter conditions (e.g. the site is covered with snow or ice, or frozen ground exists) such inspections shall be conducted at least once every month. Please refer to Appendix D for the Inspection Reports Prepared by Blackwell Engineering, PLC 36 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 5.2 Delegation of Authority Instructions: — Identify the individual(s) or specifically describe the position where the construction site operator has delegated authority for the purposes of signing inspection reports, certifications, or other information. — Attach the delegation of authority form that will be used. Duly Authorized Representative(s) or Position(s): Please refer to Appendix I for the Delegation of Authority 5.3 Corrective Action Log Instructions: — This log should describe repair, replacement, and maintenance of BMPs undertaken as a result of the inspections and maintenance procedures form section 5.1 and the inspection sheets in Appendix C. Actions related to the findings of inspections should reference the specific inspection report. — This log should describe actions taken, date completed, and note the person that completed the work. Corrective Action Log: Please refer to Appendix E for the Corrective Action Log Prepared by Blackwell Engineering, PLC 37 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 SECTION 6: RECORDKEEPING AND TRAINING 6.1 Recordkeeping Instructions: — The following is a list of records you should keep at your project site available for inspectors to review: — Dates of grading, construction activity, and stabilization — A copy of the construction general permit — The signed and certified VSMP Registration Statement — A copy of the letter from DEQ notifying you of their receipt of your complete VSMP Registration Statement — Inspection reports — Records relating to endangered species and historic preservation — Check your permit for additional details Upon receipt, a copy of the notice of coverage under the general VPDES permit for discharges of stormwater from construction activities (i.e., notice of coverage letter) and a copy of the general VPDES permit must be kept with SWPPP books. Operators with day-to-day operational control over SWPPP implementation shall have a copy of the SWPPP available at a central location on -site for use by those identified as having responsibilities under the SWPPP whenever they are on the construction site. The operator shall update the SWPPP no later than seven days following any modification: Construction activities temporarily or permanently cease on a portion of the site; and Stabilization measures are initiated. Areas that have reached final stabilization and where no further SWPPP or inspection requirements apply. All properties that are no longer under the legal control of the operator and the dates on which the operator no longer had legal control over each property. The date of any prohibited discharges, the discharge volume released, and what actions were taken to minimize the impact of the release. Measures taken to prevent the reoccurrence of any prohibited discharge. Records will be retained for a minimum period of at least 3 years after the permit is terminated. Date(s) when major grading activities occur: Please refer to Appendix F for the SWPPP Amendment Log Prepared by Blackwell Engineering, PLC 38 Stormwater Pollution Prevention Plan (SWPPP) Troxell Poultry House I May 26, 2021 6.2 Log of Changes to the SWPPP Instructions: — Create a log here, or as an attachment, of changes and updates to the SWPPP. You should include additions of new BMPs, replacement of failed BMPs, significant changes in the activities or their timing on the project, changes in personnel, changes in inspection and maintenance procedures, updates to site maps, and so on. Please refer to Appendix F for the SWPPP Amendment Log Prepared by Blackwell Engineering, PLC 39 Appendix A Appendix A —Aerial Photograph Appendix A —Terrain Map - u95 � •.all �_ / , ( f WATER RUNOFF DIRECTION (ARROWS) er w\ � G n` m Appendix B CHAPTER 880 GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION ACTIVITIES 9VAC25-880-1. Definitions. The words and terms used in this chapter shall have the meanings defined in the Virginia Stormwater Management Act (Article 2.3 (§ 62.1-44.15:24 et seq.) of Chapter 3.1 of Title 62.1 of the Code of Virginia), this chapter, and 9VAC25-870 unless the context clearly indicates otherwise, except as otherwise specified in this section. Terms not defined in the Act, this chapter, or 9VAC25-870 shall have the meaning attributed to them in the federal Clean Water Act (33 USC § 1251 et seq.) (CWA). For the purposes of this chapter: "Business day" means Monday through Friday excluding state holidays. "Commencement of land disturbance" means the initial disturbance of soils associated with clearing, grading, or excavating activities or other construction activities (e.g., stockpiling of fill material). "Construction site" means the land where any land -disturbing activity is physically located or conducted, including any adjacent land used or preserved in connection with the land -disturbing activity. "Final stabilization" means that one of the following situations has occurred: 1. All soil disturbing activities at the site have been completed and a permanent vegetative cover has been established on denuded areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established until a ground cover is achieved that is uniform (e.g., evenly distributed), mature enough to survive, and will inhibit erosion. 2. For individual lots in residential construction, final stabilization can occur by either: a. The homebuilder completing final stabilization as specified in subdivision 1 of this definition; or b. The homebuilder establishing temporary soil stabilization, including perimeter controls for an individual lot prior to occupation of the home by the homeowner, and informing the homeowner of the need for, and benefits of, final stabilization. 3. For construction projects on land used for agricultural purposes , final stabilization may be accomplished by returning the disturbed land to its preconstruction agricultural use. Areas disturbed that were not previously used for agricultural activities, such as buffer strips immediately adjacent to surface waters, and areas that are not being returned to their preconstruction agricultural use must meet the final stabilization criteria specified in subdivision 1 or 2 of this definition. "Immediately" means as soon as practicable, but no later than the end of the next business day, following the day when the land -disturbing activities have temporarily or permanently ceased. In the context of this general permit, "immediately" is used to define the deadline for initiating stabilization measures. "Impaired waters" means surface waters identified as impaired on the 2012 § 305(b)/303(d) Water Quality Assessment Integrated Report. "Infeasible" means not technologically possible or not economically practicable and achievable in light of best industry practices. "Initiation of stabilization activities" means: 1. Prepping the soil for vegetative or nonvegetative stabilization; Page 1 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) 2. Applying mulch or other nonvegetative product to the exposed area; 3. Seeding or planting the exposed area; 4. Starting any of the above activities on a portion of the area to be stabilized, but not on the entire area; or 5. Finalizing arrangements to have the stabilization product fully installed in compliance with the applicable deadline for completing stabilization. This list is not exhaustive. "Measurable storm event" means a rainfall event producing 0.25 inches of rain or greater over 24 hours. "Stabilized" means land that has been treated to withstand normal exposure to natural forces without incurring erosion damage. 9VAC25-880-10. Purpose. This general permit regulation governs stormwater discharges from regulated construction activities. For the purposes of this chapter, these discharges are defined as stormwater discharges associated with large construction activity, and stormwater discharges associated with small construction activity. Stormwater discharges associated with other types of industrial activity shall not have coverage under this general permit. This general permit covers only discharges through a point source to surface waters or through a municipal or nonmunicipal separate storm sewer system to surface waters. Stormwater discharges associated with industrial activity that originate from construction activities that have been completed and the site has undergone final stabilization are not authorized by this general permit. 9VAC25-880-15. Applicability of incorporated references based on the dates that they became effective. Except as noted, when a regulation of the United States set forth in the Code of Federal Regulations is referenced and incorporated herein, that regulation shall be as it exists and has been published in the July 1, 2013, update. 9VAC25-880-20. Effective date of general permit. This general permit is effective on July 1, 2014. The general permit will expire on June 30, 2019. This general permit is effective for any covered operator upon compliance with all provisions of 9VAC25-880-30. 9VAC25-880-30. Authorization to discharge. A. Any operator governed by this general permit is authorized to discharge to surface waters of the Commonwealth of Virginia provided that: 1. The operator submits a complete and accurate registration statement, if required to do so, in accordance with 9VAC25-880-50 and receives acceptance of the registration by the board; 2. The operator submits any permit fees, if required to do so, in accordance with 9VAC25-870-700 et seq.; 3. The operator complies with the applicable requirements of 9VAC25-880-70; 4. The operator obtains approval of: Page 2 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) a. An erosion and sediment control plan from the appropriate VESCP authority as authorized under the Erosion and Sediment Control Regulations (9VAC25-840), unless the operator receives from the VESCP an "agreement in lieu of a plan" as defined in 9VAC25-840-10 or prepares the erosion and sediment control plan in accordance with annual standards and specifications approved by the department. The operator of any land -disturbing activity that is not required to obtain erosion and sediment control plan approval from a VESCP authority or is not required to adopt department -approved annual standards and specifications shall submit the erosion and sediment control plan to the department for review and approval; and b. A stormwater management plan from the appropriate VSMP authority as authorized under the Virginia Stormwater Management Program (VSMP) Regulation (9VAC25-870), unless the operator prepares the stormwater management plan in accordance with annual standards and specifications approved by the department. The operator of any land -disturbing activity that is not required to obtain stormwater management plan approval from a VSMP authority or is not required to adopt department -approved annual standards and specifications shall submit the stormwater management plan to the department for review and approval; and 5. The board has not notified the operator that the discharge is not eligible for coverage in accordance with subsection B of this section. B. The board will notify an operator that the discharge is not eligible for coverage under this general permit in the event of any of the following: 1. The operator is required to obtain an individual permit in accordance with 9VAC25- 870-410 B; 2. The operator is proposing discharges to surface waters specifically named in other board regulations that prohibit such discharges; 3. The discharge causes, may reasonably be expected to cause, or contributes to a violation of water quality standards (9VAC25-260); 4. The discharge violates or would violate the antidegradation policy in the Water Quality Standards (9VAC25-260-30) ; or 5. The discharge is not consistent with the assumptions and requirements of an applicable TMDL approved prior to the term of this general permit. C. This general permit also authorizes stormwater discharges from support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) located on -site or off -site provided that: 1. The support activity is directly related to a construction activity that is required to have general permit coverage for discharges of stormwater from construction activities; 2. The support activity is not a commercial operation , nor does it serve multiple unrelated construction activities by different operators; 3. The support activity does not operate beyond the completion of the last construction activity it supports; 4. The support activity is identified in the registration statement at the time of general permit coverage; 5. Appropriate control measures are identified in a stormwater pollution prevention plan and implemented to address the discharges from the support activity areas; and 6. All applicable, state, federal, and local approvals are obtained for the support activity. D. Support activities located off -site are not required to be covered under this general permit. Discharges of stormwater from off -site support activities may be authorized under Page 3 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) another state or VPDES permit. Where stormwater discharges from off -site support activities are not authorized under this general permit, the land area of the off -site support activity need not be included in determining the total land disturbance acreage of the construction activity seeking general permit coverage. E. Discharges authorized by this general permit may be commingled with other sources of stormwater that are not required to be covered under a state permit, so long as the commingled discharge is in compliance with this general permit. Discharges authorized by a separate state or VPDES permit may be commingled with discharges authorized by this general permit so long as all such discharges comply with all applicable state and VPDES permit requirements. F. Authorized nonstormwater discharges. The following nonstormwater discharges from construction activities are authorized by this general permit: 1. Discharges from firefighting activities; 2. Fire hydrant flushings; 3. Water used to wash vehicles or equipment where soaps, solvents, or detergents have not been used and the wash water has been filtered, settled, or similarly treated prior to discharge; 4. Water used to control dust that has been filtered, settled, or similarly treated prior to discharge; 5. Potable water source, including uncontaminated waterline flushings; 6. Routine external building wash down where soaps, solvents, or detergents have not been used and the wash water has been filtered, settled, or similarly treated prior to discharge; 7. Pavement wash water where spills or leaks of toxic or hazardous materials have not occurred (or where all spilled or leaked material has been removed prior to washing); where soaps, solvents, or detergents have not been used; and where the wash water has been filtered, settled, or similarly treated prior to discharge; 8. Uncontaminated air conditioning or compressor condensate; 9. Uncontaminated groundwater or spring water; 10. Foundation or footing drains where flows are not contaminated with process materials such as solvents; 11. Uncontaminated, excavation dewatering, including dewatering of trenches and excavations that have been filtered, settled, or similarly treated prior to discharge; and 12. Landscape irrigations. G. Approval for coverage under this general permit does not relieve any operator of the responsibility to comply with any other applicable federal, state or local statute, ordinance or regulation. H. Continuation of general permit coverage. 1. Any operator that was authorized to discharge under the general permit issued in 2009 and that submits a complete and accurate registration statement on or before June 30, 2014, is authorized to continue to discharge under the terms of the 2009 general permit until such time as the board either: a. Issues coverage to the operator under this general permit or b. Notifies the operator that the discharge is not eligible for coverage under this general permit. 2. When the operator is not in compliance with the conditions of the expiring or expired general permit the board may choose to do any or all of the following: Page 4 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) a. Initiate enforcement action based upon the 2009 general permit; b. Issue a notice of intent to deny the new general permit. If the general permit is denied, the owner or operator would then be required to cease the activities authorized by the continued general permit or be subject to enforcement action for operating without a state permit; C. Issue a new state permit with appropriate conditions; or d. Take other actions authorized by the VSMP Regulation (9VAC25-870). 9VAC25-880-40. Delegation of authorities to state and local programs. A board -approved VSMP authority is authorized to administer requirements of this general permit, including but not limited to: (i) registration statement acceptance; (ii) fee collection; (iii) stormwater management plan review and approval; and (iv) permit compliance and enforcement dependent upon conditions established as part of the board approval. 9VAC25-880-50. General permit application (registration statement). A. Deadlines for submitting registration statement. Any operator seeking coverage under this general permit, and that is required to submit a registration statement, shall submit a complete and accurate general VPDES permit registration statement in accordance with this section, which shall serve as a notice of intent for coverage under the general VPDES permit for discharges of stormwater from construction activities. 1. New construction activities. a. Any operator proposing a new stormwater discharge from construction activities shall submit a complete and accurate registration statement to the VSMP authority prior to the commencement of land disturbance. b. Any operator proposing a new stormwater discharge from construction activities in response to a public emergency where the related work requires immediate authorization to avoid imminent endangerment to human health or the environment is authorized to discharge under this general permit, provided that: (1) The operator submits a complete and accurate registration statement to the VSMP authority no later than 30 days after commencing land disturbance; and (2) Documentation to substantiate the occurrence of the public emergency is provided with the registration statement. c. Any operator proposing a new stormwater discharge associated with the construction of a single-family residence separately built, disturbing less than one acre and part of a larger common plan of development or sale, is authorized to discharge under this general permit and is not required to submit a registration statement or the department portion of the permit fee, provided that the stormwater management plan for the larger common plan of development or sale provides permanent control measures (i.e., stormwater management facilities) encompassing the single family residence. 2. Existing construction activities. a. Any operator that was authorized to discharge under the general permit issued in 2009 and that intends to continue coverage under this general permit shall: (1) Submit a complete and accurate registration statement to the VSMP authority on or before June 1, 2014; and Page 5 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) (2) Update its stormwater pollution prevention plan to comply with the requirements of this general permit no later than 60 days after the date of coverage under this general permit. b. Any operator with an existing stormwater discharge associated with the construction of a single-family residence separately built, disturbing less than one acre and part of a larger common plan of development or sale, and that intends to continue coverage under this general permit, is authorized to discharge under this general permit and is not required to submit a registration statement or the department portion of the permit fee, provided that: (1) The stormwater management plan for the larger common plan of development or sale provides permanent control measures (i.e., stormwater management facilities) encompassing the single-family residence; and (2) The operator updates its stormwater pollution prevention plan to comply with the requirements of this general permit no later than 60 days after the date of coverage under this general permit. 3. For stormwater discharges from construction activities where the operator changes, the new operator must submit a complete and accurate registration statement or transfer agreement form to the VSMP authority prior to assuming operational control over site specifications or commencing work on -site. 4. Late notifications. Operators are not prohibited from submitting registration statements after commencing land disturbance. When a late registration statement is submitted, authorization for discharges shall not occur until coverage under the general permit is issued. The VSMP authority, department, board, and the EPA reserve the right to take enforcement action for any unpermitted discharges that occur between the commencement of land disturbance and discharge authorization. B. Registration statement. The operator shall submit a registration statement to the VSMP authority that shall contain the following information: 1. Name, contact, mailing address, telephone number, and email address if available of the construction activity operator. No more than one operator may receive coverage under each registration statement. NOTE: General permit coverage will be issued to this operator, and the certification in subdivision 11 of this subsection must be signed by the appropriate person associated with this operator; 2. Name and location if available of the construction activity and all off -site support activities to be covered under this general permit, including city or county, and latitude and longitude in decimal degrees; 3. Status of the construction activity: federal, state, public, or private; 4. Nature of the construction activity (e.g., commercial, industrial, residential, agricultural, oil and gas, etc.); 5. Name of the receiving water(s) and HUC ; 6. If the discharge is through a municipal separate storm sewer system (MS4), the name of the municipal separate storm sewer system operator; 7. Estimated project start date and completion date; 8. Total land area of development and estimated area to be disturbed by the construction activity (to the nearest one -hundredth of an acre); 9. Whether the area to be disturbed by the construction activity is part of a larger common plan of development or sale; Page 6 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) 10. A stormwater pollution prevention plan (SWPPP) must be prepared in accordance with the requirements of the General VPDES Permit for Stormwater Discharges from Construction Activities prior to submitting the registration statement. By signing the registration statement the operator certifies that the SWPPP has been prepared ; and 11. The following certification: "I certify under penalty of law that I have read and understand this registration statement and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment for knowing violations." C. The registration statement shall be signed in accordance with 9VAC25-880-70, Part III K. 9VAC25-880-60. Termination of general permit coverage. A. Requirements. The operator of the construction activity shall submit a notice of termination to the VSMP authority after one or more of the following conditions have been met: 1. Necessary permanent control measures included in the SWPPP for the site are in place and functioning effectively and final stabilization has been achieved on all portions of the site for which the operator is responsible. When applicable, long-term responsibility and maintenance requirements for permanent control measures shall be recorded in the local land records prior to the submission of a notice of termination; 2. Another operator has assumed control over all areas of the site that have not been finally stabilized and obtained coverage for the ongoing discharge; 3. Coverage under an alternative VPDES or state permit has been obtained; or 4. For residential construction only, temporary soil stabilization has been completed and the residence has been transferred to the homeowner. The notice of termination should be submitted no later than 30 days after one of the above conditions being met. Authorization to discharge terminates at midnight on the date that the notice of termination is submitted for the conditions set forth in subdivisions 2 through 4 of this subsection unless otherwise notified by the VSMP authority or the department. Termination of authorizations to discharge for the conditions set forth in subdivision 1 of this subsection shall be effective upon notification from the department that the provisions of subdivision 1 of this subsection have been met or 60 days after submittal of the notice of terminations, whichever occurs first. B. Notice of termination. The notice of termination shall contain the following information: 1. Name, contact, mailing address, telephone number, and email address if available of the construction activity operator. 2. Name and location if available of the construction activity covered under this general permit, including city or county, and latitude and longitude in decimal degrees. 3. The general permit registration number. 4. The basis for submission of the notice of termination, pursuant to subsection A of this section. 5. Where applicable, a list of the on -site and off -site permanent control measures (both structural and nonstructural) that were installed to comply with the stormwater Page 7 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) management technical criteria. For each permanent control measure that was installed, the following information shall be included: a. The type of permanent control measure installed and the date that it became functional as a permanent control measure; b. The location if available of the permanent control measure, including city or county, and latitude and longitude in decimal degrees; c. The receiving water of the permanent control measures; and d. The number of total and impervious acres treated by the permanent control measure (to the nearest one -tenth of an acre). 6. Where applicable, the following information related to participation in a regional stormwater management plan. For each regional stormwater management facility, the following information shall be included: a. The type of regional facility to which the site contributes; b. The location if available of the regional facility, including city or county, and latitude and longitude in decimal degrees; and c. The number of total and impervious site acres treated by the regional facility (to the nearest one -tenth of an acre). 7. Where applicable, the following information related to perpetual nutrient credits that were acquired in accordance with § 62.1-44.15:35 of the Code of Virginia: a. The name of the nonpoint nutrient credit generating entity from which perpetual nutrient credits were acquired; and b. The number of perpetual nutrient credits acquired (lbs. per acre per year). 8. The following certification: "I certify under penalty of law that I have read and understand this notice of termination and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment for knowing violations." C. The notice of termination shall be signed in accordance with 9VAC25-880-70 Part III K. D. Termination by the board. The board may terminate coverage under this general permit during its term and require application for an individual permit or deny a general permit renewal application on its own initiative in accordance with the Act, this chapter, and the VSMP Regulation, 9VAC25-870. 9VAC25-880-70. General permit. Any operator whose registration statement is accepted by the board will receive the following general permit and shall comply with the requirements contained therein and be subject to all requirements of 9VAC25-870. Page 8 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) General Permit No.: VAR10 Effective Date: July 1, 2014 Expiration Date: June 30, 2019 GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION ACTIVITIES AUTHORIZATION TO DISCHARGE UNDER THE VIRGINIA STORMWATER MANAGEMENT PROGRAM AND THE VIRGINIA STORMWATER MANAGEMENT ACT In compliance with the provisions of the Clean Water Act, as amended, and pursuant to the Virginia Stormwater Management Act and regulations adopted pursuant thereto, operators of construction activities are authorized to discharge to surface waters within the boundaries of the Commonwealth of Virginia, except those specifically named in State Water Control Board regulations that prohibit such discharges. The authorized discharge shall be in accordance with this cover page, Part I - Discharge Authorization and Special Conditions, Part II - Stormwater Pollution Prevention Plan, and Part III - Conditions Applicable to All VPDES Permits as set forth herein. PART DISCHARGE AUTHORIZATION AND SPECIAL CONDITIONS A. Coverage under this general permit. 1. During the period beginning with the date of coverage under this general permit and lasting until the general permit's expiration date, the operator is authorized to discharge stormwater from construction activities. 2. This general permit also authorizes stormwater discharges from support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) located on -site or off -site provided that: a. The support activity is directly related to the construction activity that is required to have general permit coverage for discharges of stormwater from construction activities; b. The support activity is not a commercial operation, nor does it serve multiple unrelated construction activities by different operators ; c. The support activity does not operate beyond the completion of the last construction activity it supports; d. The support activity is identified in the registration statement at the time of general permit coverage; e. Appropriate control measures are identified in a stormwater pollution prevention plan and implemented to address the discharges from the support activity areas; and f. All applicable state, federal, and local approvals are obtained for the support activity. B. Limitations on coverage. 1. Post -construction discharges. This general permit does not authorize stormwater discharges that originate from the site after construction activities have been completed and the site, including any support activity sites covered under the general permit Page 9 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) registration, has undergone final stabilization. Post -construction industrial stormwater discharges may need to be covered by a separate VPDES permit. 2. Discharges mixed with nonstormwater. This general permit does not authorize discharges that are mixed with sources of nonstormwater, other than those discharges that are identified in Part I E (Authorized nonstormwater discharges) and are in compliance with this general permit. 3. Discharges covered by another state permit. This general permit does not authorize discharges of stormwater from construction activities that have been covered under an individual permit or required to obtain coverage under an alternative general permit. 4. Impaired waters and TMDL limitation. Discharges of stormwater from construction activities to surface waters identified as impaired in the 2012 § 305(b)/303(d) Water Quality Assessment Integrated Report or for which a TMDL wasteload allocation has been established and approved prior to the term of this general permit for (i) sediment or a sediment -related parameter (i.e., total suspended solids or turbidity) or (ii) nutrients (i.e., nitrogen or phosphorus) are not eligible for coverage under this general permit unless the operator develops, implements, and maintains a SWPPP that minimizes the pollutants of concern and, when applicable, is consistent with the assumptions and requirements of the approved TMDL wasteload allocations. In addition, the operator shall implement the following items: a. The impaired water(s), approved TMDL(s), and pollutant(s) of concern, when applicable, shall be identified in the SWPPP; b. Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; c. Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and d. The applicable SWPPP inspection requirements specified in Part II F 2 shall be amended as follows: (1) Inspections shall be conducted at a frequency of (i) at least once every four business days or (ii) at least once every five business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to surface waters identified as impaired or for which a TMDL wasteload allocation has been established and approved prior to the term of this general permit. 5. Exceptional waters limitation. Discharges of stormwater from construction activities not previously covered under the general permit issued in 2009 to exceptional waters identified in 9VAC25-260-30 A 3 c are not eligible for coverage under this general permit unless the operator implements the following: a. The exceptional water(s) shall be identified in the SWPPP; b. Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; c. Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and Page 10 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) d. The applicable SWPPP inspection requirements specified in Part II F 2 shall be amended as follows: (1) Inspections shall be conducted at a frequency of (i) at least once every four business days or (ii) at least once every five business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters. 6. There shall be no discharge of floating solids or visible foam in other than trace amounts. C. Commingled discharges. Discharges authorized by this general permit may be commingled with other sources of stormwater that are not required to be covered under a state permit, so long as the commingled discharge is in compliance with this general permit. Discharges authorized by a separate state or VPDES permit may be commingled with discharges authorized by this general permit so long as all such discharges comply with all applicable state and VPDES permit requirements. D. Prohibition of nonstormwater discharges. Except as provided in Parts I A 2, I C and I E, all discharges covered by this general permit shall be composed entirely of stormwater associated with construction activities. All other discharges including the following are prohibited: 1. Wastewater from washout of concrete; 2. Wastewater from the washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials; 3. Fuels, oils, or other pollutants used in vehicle and equipment operation and maintenance; 4. Oils, toxic substances, or hazardous substances from spills or other releases; and 5. Soaps, solvents , or detergents used in equipment and vehicle washing. E. Authorized nonstormwater discharges. The following nonstormwater discharges from construction activities are authorized by this general permit when discharged in compliance with this general permit: 1. Discharges from firefighting activities; 2. Fire hydrant flushings; 3. Waters used to wash vehicles or equipment where soaps, solvents, or detergents have not been used and the wash water has been filtered, settled, or similarly treated prior to discharge; 4. Water used to control dust that has been filtered, settled, or similarly treated prior to discharge; 5. Potable water sources, including uncontaminated waterline flushings; 6. Routine external building wash down where soaps, solvents or detergents have not been used and the wash water has been filtered, settled, or similarly treated prior to discharge; 7. Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (or where all spilled or leaked material has been removed prior to Page 11 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) washing); where soaps, solvents, or detergents have not been used ; and where the wash water has been filtered, settled, or similarly treated prior to discharge; 8. Uncontaminated air conditioning or compressor condensate; 9. Uncontaminated ground water or spring water; 10. Foundation or footing drains where flows are not contaminated with process materials such as solvents; 11. Uncontaminated excavation dewatering, including dewatering of trenches and excavations that have been filtered, settled, or similarly treated prior to discharge; and 12. Landscape irrigation. Termination of general permit coverage. 1. The operator of the construction activity shall submit a notice of termination in accordance with 9VAC25-880-60 to the VSMP authority after one or more of the following conditions have been met: a. Necessary permanent control measures included in the SWPPP for the site are in place and functioning effectively and final stabilization has been achieved on all portions of the site for which the operator is responsible. When applicable, long term responsibility and maintenance requirements shall be recorded in the local land records prior to the submission of a notice of termination; b. Another operator has assumed control over all areas of the site that have not been finally stabilized and obtained coverage for the ongoing discharge; c. Coverage under an alternative VPDES or state permit has been obtained; or d. For residential construction only, temporary soil stabilization has been completed and the residence has been transferred to the homeowner. 2. The notice of termination should be submitted no later than 30 days after one of the above conditions in subdivision 1 of this subsection are met. Authorization to discharge terminates at midnight on the date that the notice of termination is submitted for the conditions set forth in subdivisions 1 b through 1 d of this subsection. Termination of authorizations to discharge for the conditions set forth in subdivision 1 a of this subsection shall be effective upon notification from the department that the provisions of subdivision 1 a of this subsection have been met or 60 days after submittal of the notice of termination, whichever occurs first. 3. The notice of termination shall be signed in accordance with Part III K of this general permit. G. Water quality protection. 1. The operator must select, install, implement and maintain control measures as identified in the SWPPP at the construction site that minimize pollutants in the discharge as necessary to ensure that the operator's discharge does not cause or contribute to an excursion above any applicable water quality standard. 2. If it is determined by the department that the operator's discharges are causing, have reasonable potential to cause, or are contributing to an excursion above any applicable water quality standard, the department, in consultation with the VSMP authority, may take appropriate enforcement action and require the operator to: a. Modify or implement additional control measures in accordance with Part II B to adequately address the identified water quality concerns; Page 12 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) b. Submit valid and verifiable data and information that are representative of ambient conditions and indicate that the receiving water is attaining water quality standards; or c. Submit an individual permit application in accordance with 9VAC25-870-410 B 3. All written responses required under this chapter must include a signed certification consistent with Part I II K. PART II STORMWATER POLLUTION PREVENTION PLAN A stormwater pollution prevention plan (SWPPP) shall be developed prior to the submission of a registration statement and implemented for the construction activity, including any support activity, covered by this general permit. SWPPPs shall be prepared in accordance with good engineering practices. Construction activities that are part of a larger common plan of development or sale and disturb less than one acre may utilize a SWPPP template provided by the department and need not provide a separate stormwater management plan if one has been prepared and implemented for the larger common plan of development or sale. The SWPPP requirements of this general permit may be fulfilled by incorporating by reference other plans such as a spill prevention control and countermeasure (SPCC) plan developed for the site under § 311 of the federal Clean Water Act or best management practices (BMP) programs otherwise required for the facility provided that the incorporated plan meets or exceeds the SWPPP requirements of Part II A. All plans incorporated by reference into the SWPPP become enforceable under this general permit. If a plan incorporated by reference does not contain all of the required elements of the SWPPP, the operator must develop the missing elements and include them in the SWPPP. Any operator that was authorized to discharge under the general permit issued in 2009, and that intends to continue coverage under this general permit, shall update its stormwater pollution prevention plan to comply with the requirements of this general permit no later than 60 days after the date of coverage under this general permit. A. Stormwater pollution prevention plan contents. The SWPPP shall include the following items: 1. General information. a. A signed copy of the registration statement for coverage under the general VPDES permit for discharges of stormwater from construction activities; b. Upon receipt, a copy of the notice of coverage under the general VPDES permit for discharges of stormwater from construction activities (i.e., notice of coverage letter); c. Upon receipt, a copy of the general VPDES permit for discharges of stormwater from construction activities; d. A narrative description of the nature of the construction activity, including the function of the project (e.g., low density residential, shopping mall, highway, etc.); e. A legible site plan identifying: (1) Directions of stormwater flow and approximate slopes anticipated after major grading activities; (2) Limits of land disturbance including steep slopes and natural buffers around surface waters that will not be disturbed; Page 13 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) (3) Locations of major structural and nonstructural control measures, including sediment basins and traps, perimeter dikes, sediment barriers, and other measures intended to filter, settle, or similarly treat sediment, that will be installed between disturbed areas and the undisturbed vegetated areas in order to increase sediment removal and maximize stormwater infiltration; (4) Locations of surface waters; (5) Locations where concentrated stormwater is discharged; (6) Locations of support activities, when applicable and when required by the VSMP authority, including but not limited to (i) areas where equipment and vehicle washing, wheel wash water, and other wash water is to occur; (ii) storage areas for chemicals such as acids, fuels, fertilizers, and other lawn care chemicals; (iii) concrete wash out areas; (iv) vehicle fueling and maintenance areas; (v) sanitary waste facilities, including those temporarily placed on the construction site; and (vi) construction waste storage; and (7) When applicable, the location of the on -site rain gauge or the methodology established in consultation with the VSMP authority used to identify measurable storm events for inspection purposes. 2. Erosion and sediment control plan. a. An erosion and sediment control plan approved by the VESCP authority as authorized under the Erosion and Sediment Control Regulations (9VAC25-840), an "agreement in lieu of a plan" as defined in 9VAC25-840-10 from the VESCP authority, or an erosion and sediment control plan prepared in accordance with annual standards and specifications approved by the department. Any operator proposing a new stormwater discharge from construction activities that is not required to obtain erosion and sediment control plan approval from a VESCP authority or does not adopt department -approved annual standards and specifications shall submit the erosion and sediment control plan to the department for review and approval. b. All erosion and sediment control plans shall include a statement describing the maintenance responsibilities required for the erosion and sediment controls used. c. A properly implemented approved erosion and sediment control plan, "agreement in lieu of a plan," or erosion and sediment control plan prepared in accordance with department -approved annual standards and specifications, that adequately: (1) Controls the volume and velocity of stormwater runoff within the site to minimize soil erosion; (2) Controls stormwater discharges, including peak flow rates and total stormwater volume, to minimize erosion at outlets and to minimize downstream channel and stream bank erosion; (3) Minimizes the amount of soil exposed during the construction activity; (4) Minimizes the disturbance of steep slopes; (5) Minimizes sediment discharges from the site in a manner that addresses (i) the amount, frequency, intensity, and duration of precipitation; (ii) the nature of resulting stormwater runoff; and (iii) soil characteristics, including the range of soil particle sizes present on the site; (6) Provides and maintains natural buffers around surface waters, directs stormwater to vegetated areas to increase sediment removal, and maximizes stormwater infiltration, unless infeasible; Page 14 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) (7) Minimizes soil compaction and, unless infeasible, preserves topsoil; (8) Ensures that stabilization of disturbed areas will be initiated immediately whenever any clearing, grading, excavating, or other land -disturbing activities have permanently ceased on any portion of the site, or temporarily ceased on any portion of the site and will not resume for a period exceeding 14 days; and (9) Utilizes outlet structures that withdraw stormwater from the surface (i.e., above the permanent pool or wet storage water surface elevation), unless infeasible, when discharging from sediment basins or sediment traps. 3. Stormwater management plan. a. New construction activities. A stormwater management plan approved by the VSMP authority as authorized under the Virginia Stormwater Management Program (VSMP) Regulation (9VAC25-870), or a stormwater management plan prepared in accordance with annual standards and specifications approved by the department. Any operator proposing a new stormwater discharge from construction activities that is not required to obtain stormwater management plan approval from a VSMP authority or does not adopt department -approved annual standards and specifications shall submit the stormwater management plan to the department for review and approval. b. Existing construction activities. Any operator that was authorized to discharge under the general permit issued in 2009, and that intends to continue coverage under this general permit, shall ensure compliance with the requirements of 9VAC25- 870-93 through 9VAC25-870-99 of the VSMP Regulation, including but not limited to the water quality and quantity requirements. The SWPPP shall include a description of, and all necessary calculations supporting, all post -construction stormwater management measures that will be installed prior to the completion of the construction process to control pollutants in stormwater discharges after construction operations have been completed. Structural measures should be placed on upland soils to the degree possible. Such measures must be designed and installed in accordance with applicable VESCP authority, VSMP authority, state, and federal requirements, and any necessary permits must be obtained. 4. Pollution prevention plan. A pollution prevention plan that addresses potential pollutant -generating activities that may reasonably be expected to affect the quality of stormwater discharges from the construction activity, including any support activity. The pollution prevention plan shall: a. Identify the potential pollutant -generating activities and the pollutant that is expected to be exposed to stormwater; b. Describe the location where the potential pollutant -generating activities will occur, or if identified on the site plan, reference the site plan; c. Identify all nonstormwater discharges, as authorized in Part I E of this general permit, that are or will be commingled with stormwater discharges from the construction activity, including any applicable support activity; d. Identify the person responsible for implementing the pollution prevention practice or practices for each pollutant -generating activity (if other than the person listed as the qualified personnel); e. Describe the pollution prevention practices and procedures that will be implemented to: (1) Prevent and respond to leaks, spills, and other releases including (i) procedures for expeditiously stopping, containing, and cleaning up spills, leaks, and other Page 15 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) releases; and (ii) procedures for reporting leaks, spills, and other releases in accordance with Part III G; (2) Prevent the discharge of spilled and leaked fuels and chemicals from vehicle fueling and maintenance activities (e.g., providing secondary containment such as spill berms, decks, spill containment pallets, providing cover where appropriate, and having spill kits readily available); (3) Prevent the discharge of soaps, solvents, detergents, and wash water from construction materials, including the clean-up of stucco, paint, form release oils, and curing compounds (e.g., providing (i) cover (e.g., plastic sheeting or temporary roofs) to prevent contact with stormwater; (ii) collection and proper disposal in a manner to prevent contact with stormwater; and (iii) a similarly effective means designed to prevent discharge of these pollutants); (4) Minimize the discharge of pollutants from vehicle and equipment washing, wheel wash water, and other types of washing (e.g., locating activities away from surface waters and stormwater inlets or conveyance and directing wash waters to sediment basins or traps, using filtration devices such as filter bags or sand filters, or using similarly effective controls); (5) Direct concrete wash water into a leak -proof container or leak -proof settling basin. The container or basin shall be designed so that no overflows can occur due to inadequate sizing or precipitation. Hardened concrete wastes shall be removed and disposed of in a manner consistent with the handling of other construction wastes. Liquid concrete wastes shall be removed and disposed of in a manner consistent with the handling of other construction wash waters and shall not be discharged to surface waters; (6) Minimize the discharge of pollutants from storage, handling, and disposal of construction products, materials, and wastes including (i) building products such as asphalt sealants, copper flashing, roofing materials, adhesives, and concrete admixtures; (ii) pesticides, herbicides, insecticides, fertilizers, and landscape materials; and (iii) construction and domestic wastes such as packaging materials, scrap construction materials, masonry products, timber, pipe and electrical cuttings, plastics, styrofoam, concrete, and other trash or building materials; (7) Prevent the discharge of fuels, oils, and other petroleum products, hazardous or toxic wastes, and sanitary wastes; and (8) Address any other discharge from the potential pollutant -generating activities not addressed above; and f. Describe procedures for providing pollution prevention awareness of all applicable wastes, including any wash water, disposal practices, and applicable disposal locations of such wastes, to personnel in order to comply with the conditions of this general permit. The operator shall implement the procedures described in the SWPPP. 5. SWPPP requirements for discharges to impaired waters, surface waters with an applicable TMDL wasteload allocation established and approved prior to the term of this general permit, and exceptional waters. The SWPPP shall: a. Identify the impaired water(s), approved TMDL(s), pollutant(s) of concern, and exceptional waters identified in 9VAC25-260-30 A 3 c, when applicable; b. Provide clear direction that: (1) Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; Page 16 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) (2) Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and (3) A modified inspection schedule shall be implemented in accordance with Part I B 4orPart IB5. 6. Qualified personnel. The name, phone number, and qualifications of the qualified personnel conducting inspections required by this general permit. 7. Delegation of authority. The individuals or positions with delegated authority, in accordance with Part III K, to sign inspection reports or modify the SWPPP. 8. SWPPP signature. The SWPPP shall be signed and dated in accordance with Part III K. B. SWPPP amendments, modification, and updates. 1. The operator shall amend the SWPPP whenever there is a change in the design, construction, operation, or maintenance that has a significant effect on the discharge of pollutants to surface waters and that has not been previously addressed in the SWPPP. 2. The SWPPP must be amended if, during inspections or investigations by the operator's qualified personnel, or by local, state, or federal officials, it is determined that the existing control measures are ineffective in minimizing pollutants in discharges from the construction activity. Revisions to the SWPPP shall include additional or modified control measures designed and implemented to correct problems identified. If approval by the VESCP authority, VSMP authority, or department is necessary for the control measure, revisions to the SWPPP shall be completed no later than seven calendar days following approval. Implementation of these additional or modified control measures must be accomplished as described in Part II G. 3. The SWPPP must clearly identify the contractor(s) that will implement and maintain each control measure identified in the SWPPP. The SWPPP shall be amended to identify any new contractor that will implement and maintain a control measure. 4. The operator shall update the SWPPP no later than seven days following any modification to its implementation. All modifications or updates to the SWPPP shall be noted and shall include the following items: a. A record of dates when: (1) Major grading activities occur; (2) Construction activities temporarily or permanently cease on a portion of the site; and (3) Stabilization measures are initiated; b. Documentation of replaced or modified controls where periodic inspections or other information have indicated that the controls have been used inappropriately or incorrectly and where modified as soon as possible; c. Areas that have reached final stabilization and where no further SWPPP or inspection requirements apply; d. All properties that are no longer under the legal control of the operator and the dates on which the operator no longer had legal control over each property; e. The date of any prohibited discharges, the discharge volume released, and what actions were taken to minimize the impact of the release; f. Measures taken to prevent the reoccurrence of any prohibited discharge; and Page 17 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) g. Measures taken to address any evidence identified as a result of an inspection required under Part II F. 5. Amendments, modifications, or updates to the SWPPP shall be signed in accordance with Part III K. C. Public Notification. Upon commencement of land disturbance, the operator shall post conspicuously a copy of the notice of coverage letter near the main entrance of the construction activity. For linear projects, the operator shall post the notice of coverage letter at a publicly accessible location near an active part of the construction project (e.g., where a pipeline crosses a public road). The operator shall maintain the posted information until termination of general permit coverage as specified in Part I F. D. SWPPP availability. 1. Operators with day-to-day operational control over SWPPP implementation shall have a copy of the SWPPP available at a central location on -site for use by those identified as having responsibilities under the SWPPP whenever they are on the construction site. 2. The operator shall make the SWPPP and all amendments, modifications, and updates available upon request to the department, the VSMP authority, the EPA, the VESCP authority, local government officials, or the operator of a municipal separate storm sewer system receiving discharges from the construction activity. If an on -site location is unavailable to store the SWPPP when no personnel are present, notice of the SWPPP's location must be posted near the main entrance of the construction site. 3. The operator shall make the SWPPP available for public review in an electronic format or in hard copy. Information for public access to the SWPPP shall be posted and maintained in accordance with Part II C. If not provided electronically, public access to the SWPPP may be arranged upon request at a time and at a publicly accessible location convenient to the operator or his designee but shall be no less than once per month and shall be during normal business hours. Information not required to be contained within the SWPPP by this general permit is not required to be released. E. SWPPP implementation. The operator shall implement the SWPPP and subsequent amendments, modifications, and updates from commencement of land disturbance until termination of general permit coverage as specified in Part I F. 1. All control measures must be properly maintained in effective operating condition in accordance with good engineering practices and, where applicable, manufacturer specifications. If a site inspection required by Part II F identifies a control measure that is not operating effectively, corrective action(s) shall be completed as soon as practicable, but no later than seven days after discovery or a longer period as established by the VSMP authority, to maintain the continued effectiveness of the control measures. 2. If site inspections required by Part 11 F identify an existing control measure that needs to be modified or if an additional control measure is necessary for any reason, implementation shall be completed prior to the next anticipated measurable storm event. If implementation prior to the next anticipated measurable storm event is impracticable, then alternative control measures shall be implemented as soon as practicable, but no later than seven days after discovery or a longer period as established by the VSMP authority. F. SWPPP Inspections. 1. Personnel responsible for on -site and off -site inspections. Inspections required by this general permit shall be conducted by the qualified personnel identified by the operator in the SWPPP. The operator is responsible for insuring that the qualified personnel conduct the inspection. Page 18 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) 2. Inspection schedule. a. Inspections shall be conducted at a frequency of: (1) At least once every five business days; or (2) At least once every 10 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted no later than the next business day. b. Where areas have been temporarily stabilized or land -disturbing activities will be suspended due to continuous frozen ground conditions and stormwater discharges are unlikely, the inspection frequency may be reduced to once per month. If weather conditions (such as above freezing temperatures or rain or snow events) make discharges likely, the operator shall immediately resume the regular inspection frequency. c. Representative inspections may be utilized for utility line installation, pipeline construction, or other similar linear construction activities provided that: (1) Temporary or permanent soil stabilization has been installed and vehicle access may compromise the temporary or permanent soil stabilization and potentially cause additional land disturbance increasing the potential for erosion; (2) Inspections occur on the same frequency as other construction activities; (3) Control measures are inspected along the construction site 0.25 miles above and below each access point (i.e., where a roadway, undisturbed right-of-way, or other similar feature intersects the construction activity and access does not compromise temporary or permanent soil stabilization); and (4) Inspection locations are provided in the report required by Part II F. 3. Inspection requirements. a. As part of the inspection, the qualified personnel shall: (1) Record the date and time of the inspection and when applicable the date and rainfall amount of the last measurable storm event; (2) Record the information and a description of any discharges occurring at the time of the inspection; (3) Record any land -disturbing activities that have occurred outside of the approved erosion and sediment control plan; (4) Inspect the following for installation in accordance with the approved erosion and sediment control plan, identification of any maintenance needs, and evaluation of effectiveness in minimizing sediment discharge, including whether the control has been inappropriately or incorrectly used: (a) All perimeter erosion and sediment controls, such as silt fence; (b) Soil stockpiles, when applicable, and borrow areas for stabilization or sediment trapping measures; (c) Completed earthen structures, such as dams, dikes, ditches, and diversions for stabilization; (d) Cut and fill slopes; (e) Sediment basins and traps, sediment barriers, and other measures installed to control sediment discharge from stormwater; (f) Temporary or permanent channel, flume, or other slope drain structures installed to convey concentrated runoff down cut and fill slopes; Page 19 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) (g) Storm inlets that have been made operational to ensure that sediment laden stormwater does not enter without first being filtered or similarly treated; and (h) Construction vehicle access routes that intersect or access paved roads for minimizing sediment tracking; (5) Inspect areas that have reached final grade or that will remain dormant for more than 14 days for initiation of stabilization activities; (6) Inspect areas that have reached final grade or that will remain dormant for more than 14 days for completion of stabilization activities within seven days of reaching grade or stopping work; (7) Inspect for evidence that the approved erosion and sediment control plan, "agreement in lieu of a plan," or erosion and sediment control plan prepared in accordance with department -approved annual standards and specifications has not been properly implemented. This includes but is not limited to: (a) Concentrated flows of stormwater in conveyances such as rills, rivulets or channels that have not been filtered, settled, or similarly treated prior to discharge , or evidence thereof; (b) Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; (c) Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; (d) Sediment deposition on any property (including public and private streets) outside of the construction activity covered by this general permit; (e) Required stabilization has not been initiated or completed on portions of the site; (f) Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; (g) Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and (h) Land disturbance outside of the approved area to be disturbed; (8) Inspect pollutant generating activities identified in the pollution prevention plan for the proper implementation, maintenance and effectiveness of the procedures and practices; (9) Identify any pollutant generating activities not identified in the pollution prevention plan; and (10) Identify and document the presence of any evidence of the discharge of pollutants prohibited by this general permit. 4. Inspection report. Each inspection report shall include the following items: a. The date and time of the inspection and when applicable, the date and rainfall amount of the last measurable storm event; b. Summarized findings of the inspection; c. The location(s) of prohibited discharges; d. The location(s) of control measures that require maintenance; Page 20 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) e. The location(s) of control measures that failed to operate as designed or proved inadequate or inappropriate for a particular location; f. The location(s) where any evidence identified under Part II F 3 a (7) exists; g. The location(s) where any additional control measure is needed that did not exist at the time of inspection; h. A list of corrective actions required (including any changes to the SWPPP that are necessary ) as a result of the inspection or to maintain permit compliance; i. Documentation of any corrective actions required from a previous inspection that have not been implemented; and j. The date and signature of the qualified personnel and the operator or its duly authorized representative. The inspection report and any actions taken in accordance with Part II must be retained by the operator as part of the SWPPP for at least three years from the date that general permit coverage expires or is terminated. The inspection report shall identify any incidents of noncompliance. Where an inspection report does not identify any incidents of noncompliance, the report shall contain a certification that the construction activity is in compliance with the SWPPP and this general permit. The report shall be signed in accordance with Part III K of this general permit. G. Corrective actions. 1. The operator shall implement the corrective action(s) identified as a result of an inspection as soon as practicable but no later than seven days after discovery or a longer period as approved by the VSMP authority. If approval of a corrective action by a regulatory authority (e.g., VSMP authority, VESCP authority, or the department) is necessary, additional control measures shall be implemented to minimize pollutants in stormwater discharges until such approvals can be obtained. 2. The operator may be required to remove accumulated sediment deposits located outside of the construction activity covered by this general permit as soon as practicable in order to minimize environmental impacts. The operator shall notify the VSMP authority and the department as well as obtain all applicable federal, state, and local authorizations, approvals, and permits prior to the removal of sediments accumulated in surface waters including wetlands. PART III CONDITIONS APPLICABLE TO ALL VPDES PERMITS NOTE: Discharge monitoring is not required for this general permit. If the operator chooses to monitor stormwater discharges or control measures, the operator must comply with the requirements of subsections A, B, and C, as appropriate. A. Monitoring. 1. Samples and measurements taken for the purpose of monitoring shall be representative of the monitoring activity. 2. Monitoring shall be conducted according to procedures approved under 40 CFR Part 136 or alternative methods approved by the U.S. Environmental Protection Agency, unless other procedures have been specified in this general permit. Analyses performed according to test procedures approved under 40 CFR Part 136 shall be performed by an environmental laboratory certified under regulations adopted by the Department of General Services (1 VAC30-45 or 1 VAC30-46). Page 21 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) 3. The operator shall periodically calibrate and perform maintenance procedures on all monitoring and analytical instrumentation at intervals that will ensure accuracy of measurements. B. Records. 1. Monitoring records and reports shall include: a. The date, exact place, and time of sampling or measurements; b. The individual(s) who performed the sampling or measurements; c. The date(s) and time(s) analyses were performed; d. The individual(s) who performed the analyses; e. The analytical techniques or methods used; and f. The results of such analyses. 2. The operator shall retain records of all monitoring information, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation, copies of all reports required by this general permit, and records of all data used to complete the registration statement for this general permit, for a period of at least three years from the date of the sample, measurement, report or request for coverage. This period of retention shall be extended automatically during the course of any unresolved litigation regarding the regulated activity or regarding control standards applicable to the operator, or as requested by the board. C. Reporting monitoring results. 1. The operator shall update the SWPPP to include the results of the monitoring as may be performed in accordance with this general permit, unless another reporting schedule is specified elsewhere in this general permit. 2. Monitoring results shall be reported on a discharge monitoring report (DMR); on forms provided, approved or specified by the department; or in any format provided that the date, location, parameter, method, and result of the monitoring activity are included. 3. If the operator monitors any pollutant specifically addressed by this general permit more frequently than required by this general permit using test procedures approved under 40 CFR Part 136 or using other test procedures approved by the U.S. Environmental Protection Agency or using procedures specified in this general permit, the results of this monitoring shall be included in the calculation and reporting of the data submitted in the DMR or reporting form specified by the department. 4. Calculations for all limitations which require averaging of measurements shall utilize an arithmetic mean unless otherwise specified in this general permit. D. Duty to provide information. The operator shall furnish, within a reasonable time, any information which the board may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this general permit or to determine compliance with this general permit. The board, department, EPA, or VSMP authority may require the operator to furnish, upon request, such plans, specifications, and other pertinent information as may be necessary to determine the effect of the wastes from his discharge on the quality of surface waters, or such other information as may be necessary to accomplish the purposes of the CWA and the Virginia Stormwater Management Act. The operator shall also furnish to the board, department, EPA, or VSMP authority, upon request, copies of records required to be kept by this general permit. E. Compliance schedule reports. Reports of compliance or noncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule of this general permit shall be submitted no later than 14 days following each schedule date. Page 22 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) F. Unauthorized stormwater discharges. Pursuant to § 62.1-44.5 of the Code of Virginia, except in compliance with a state permit issued by the department, it shall be unlawful to cause a stormwater discharge from a construction activity. G. Reports of unauthorized discharges. Any operator who discharges or causes or allows a discharge of sewage, industrial waste, other wastes or any noxious or deleterious substance or a hazardous substance or oil in an amount equal to or in excess of a reportable quantity established under either 40 CFR Part 110, 40 CFR Part 117, 40 CFR Part 302, or § 62.1- 44.34:19 of the Code of Virginia that occurs during a 24-hour period into or upon surface waters or who discharges or causes or allows a discharge that may reasonably be expected to enter surface waters, shall notify the Department of Environmental Quality of the discharge immediately upon discovery of the discharge, but in no case later than within 24 hours after said discovery. A written report of the unauthorized discharge shall be submitted to the department and the VSMP authority within five days of discovery of the discharge. The written report shall contain: 1. A description of the nature and location of the discharge; 2. The cause of the discharge; 3. The date on which the discharge occurred; 4. The length of time that the discharge continued; 5. The volume of the discharge; 6. If the discharge is continuing, how long it is expected to continue; 7. If the discharge is continuing, what the expected total volume of the discharge will be; and 8. Any steps planned or taken to reduce, eliminate and prevent a recurrence of the present discharge or any future discharges not authorized by this general permit. Discharges reportable to the department and the VSMP authority under the immediate reporting requirements of other regulations are exempted from this requirement. H. Reports of unusual or extraordinary discharges. If any unusual or extraordinary discharge including a "bypass" or "upset', as defined herein, should occur from a facility and the discharge enters or could be expected to enter surface waters, the operator shall promptly notify, in no case later than within 24 hours, the department and the VSMP authority by telephone after the discovery of the discharge. This notification shall provide all available details of the incident, including any adverse effects on aquatic life and the known number of fish killed. The operator shall reduce the report to writing and shall submit it to the department and the VSMP authority within five days of discovery of the discharge in accordance with Part III 12. Unusual and extraordinary discharges include but are not limited to any discharge resulting from: 1. Unusual spillage of materials resulting directly or indirectly from processing operations; 2. Breakdown of processing or accessory equipment; 3. Failure or taking out of service of some or all of the facilities; and 4. Flooding or other acts of nature. I. Reports of noncompliance. The operator shall report any noncompliance which may adversely affect surface waters or may endanger public health. 1. An oral report to the department and the VSMP authority shall be provided within 24 hours from the time the operator becomes aware of the circumstances. The following shall be included as information that shall be reported within 24 hours under this subdivision: Page 23 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) a. Any unanticipated bypass; and b. Any upset that causes a discharge to surface waters. 2. A written report shall be submitted within five days and shall contain: a. A description of the noncompliance and its cause; b. The period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and c. Steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. The department may waive the written report on a case -by -case basis for reports of noncompliance under Part III I if the oral report has been received within 24 hours and no adverse impact on surface waters has been reported. 3. The operator shall report all instances of noncompliance not reported under Part III 1 1 or 2 in writing as part of the SWPPP. The reports shall contain the information listed in Part 111 1 2. NOTE: The reports required in Part III G, H and I shall be made to the department and the VSMP authority. Reports may be made by telephone, email, or by fax. For reports outside normal working hours, leaving a recorded message shall fulfill the immediate reporting requirement. For emergencies, the Virginia Department of Emergency Management maintains a 24-hour telephone service at 1-800-468-8892. 4. Where the operator becomes aware of a failure to submit any relevant facts, or submittal of incorrect information in any report, including a registration statement, to the department or the VSMP authority, the operator shall promptly submit such facts or correct information. J. Notice of planned changes. 1. The operator shall give notice to the department and the VSMP authority as soon as possible of any planned physical alterations or additions to the permitted facility or activity. Notice is required only when: a. The operator plans an alteration or addition to any building, structure, facility, or installation that may meet one of the criteria for determining whether a facility is a new source in 9VAC25-870-420; b. The operator plans an alteration or addition that would significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants that are not subject to effluent limitations in this general permit; or 2. The operator shall give advance notice to the department and VSMP authority of any planned changes in the permitted facility or activity, which may result in noncompliance with state permit requirements. K. Signatory requirements. 1. Registration statement. All registration statements shall be signed as follows: a. For a corporation: by a responsible corporate officer. For the purpose of this chapter, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation; or (ii) the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the Page 24 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for state permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this chapter, a principal executive officer of a public agency includes: (i) the chief executive officer of the agency or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. 2. Reports, etc. All reports required by this general permit, including SWPPPs, and other information requested by the board or the department shall be signed by a person described in Part III K 1 or by a duly authorized representative of that person. A person is a duly authorized representative only if: a. The authorization is made in writing by a person described in Part III K 1; b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the operator. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and c. The signed and dated written authorization is included in the SWPPP. A copy must be provided to the department and VSMP authority, if requested. 3. Changes to authorization. If an authorization under Part III K 2 is no longer accurate because a different individual or position has responsibility for the overall operation of the construction activity, a new authorization satisfying the requirements of Part III K 2 shall be submitted to the VSMP authority as the administering entity for the board prior to or together with any reports or information to be signed by an authorized representative. 4. Certification. Any person signing a document under Part III K 1 or 2 shall make the following certification: "I certify under penalty of law that I have read and understand this document and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." L. Duty to comply. The operator shall comply with all conditions of this general permit. Any state permit noncompliance constitutes a violation of the Virginia Stormwater Management Act and the Clean Water Act, except that noncompliance with certain provisions of this general permit may constitute a violation of the Virginia Stormwater Management Act but not the Clean Water Act. Permit noncompliance is grounds for enforcement action; for state permit Page 25 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) termination, revocation and reissuance, or modification; or denial of a state permit renewal application. The operator shall comply with effluent standards or prohibitions established under § 307(a) of the Clean Water Act for toxic pollutants within the time provided in the regulations that establish these standards or prohibitions or standards for sewage sludge use or disposal, even if this general permit has not yet been modified to incorporate the requirement. M. Duty to reapply. If the operator wishes to continue an activity regulated by this general permit after the expiration date of this general permit, the operator shall submit a new registration statement at least 90 days before the expiration date of the existing general permit, unless permission for a later date has been granted by the board. The board shall not grant permission for registration statements to be submitted later than the expiration date of the existing general permit. N. Effect of a state permit. This general permit does not convey any property rights in either real or personal property or any exclusive privileges, nor does it authorize any injury to private property or invasion of personal rights, or any infringement of federal, state or local law or regulations. O. State law. Nothing in this general permit shall be construed to preclude the institution of any legal action under, or relieve the operator from any responsibilities, liabilities, or penalties established pursuant to any other state law or regulation or under authority preserved by § 510 of the Clean Water Act. Except as provided in general permit conditions on "bypassing" (Part III U) and "upset' (Part III V), nothing in this general permit shall be construed to relieve the operator from civil and criminal penalties for noncompliance. P. Oil and hazardous substance liability. Nothing in this general permit shall be construed to preclude the institution of any legal action or relieve the operator from any responsibilities, liabilities, or penalties to which the operator is or may be subject under §§ 62.1-44.34:14 through 62.1-44.34:23 of the State Water Control Law or § 311 of the Clean Water Act. Q. Proper operation and maintenance. The operator shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances), which are installed or used by the operator to achieve compliance with the conditions of this general permit. Proper operation and maintenance also includes effective plant performance, adequate funding, adequate staffing, and adequate laboratory and process controls, including appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems, which are installed by the operator only when the operation is necessary to achieve compliance with the conditions of this general permit. R. Disposal of solids or sludges. Solids, sludges or other pollutants removed in the course of treatment or management of pollutants shall be disposed of in a manner so as to prevent any pollutant from such materials from entering surface waters and in compliance with all applicable state and federal laws and regulations. S. Duty to mitigate. The operator shall take all steps to minimize or prevent any discharge in violation of this general permit that has a reasonable likelihood of adversely affecting human health or the environment. T. Need to halt or reduce activity not a defense. It shall not be a defense for an operator in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this general permit. U. Bypass. 1. 'Bypass," as defined in 9VAC25-870-10, means the intentional diversion of waste streams from any portion of a treatment facility. The operator may allow any bypass to occur that does not cause effluent limitations to be exceeded, but only if it also is for Page 26 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) essential maintenance to ensure efficient operation. These bypasses are not subject to the provisions of Part III U 2 and 3. 2. Notice. a. Anticipated bypass. If the operator knows in advance of the need for a bypass, the operator shall submit prior notice to the department, if possible at least 10 days before the date of the bypass. b. Unanticipated bypass. The operator shall submit notice of an unanticipated bypass as required in Part III I. 3. Prohibition of bypass. a. Except as provided in Part III U 1, bypass is prohibited, and the board or department may take enforcement action against an operator for bypass unless: (1) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage. Severe property damage means substantial physical damage to property, damage to the treatment facilities that causes them to become inoperable, or substantial and permanent loss of natural resources that can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production; (2) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass that occurred during normal periods of equipment downtime or preventive maintenance; and (3) The operator submitted notices as required under Part III U 2. b. The department may approve an anticipated bypass, after considering its adverse effects, if the department determines that it will meet the three conditions listed in Part III U3a. V. Upset. 1. An "upset," as defined in 9VAC25-870-10, means an exceptional incident in which there is unintentional and temporary noncompliance with technology -based state permit effluent limitations because of factors beyond the reasonable control of the operator. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. 2. An upset constitutes an affirmative defense to an action brought for noncompliance with technology -based state permit effluent limitations if the requirements of Part III V 4 are met. A determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is not a final administrative action subject to judicial review. 3. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventative maintenance, or careless or improper operation. 4. An operator who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs or other relevant evidence that: a. An upset occurred and that the operator can identify the cause(s) of the upset; b. The permitted facility was at the time being properly operated; Page 27 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) c. The operator submitted notice of the upset as required in Part III I; and d. The operator complied with any remedial measures required under Part III S. 5. In any enforcement proceeding, the operator seeking to establish the occurrence of an upset has the burden of proof. W. Inspection and entry. The operator shall allow the department as the board's designee, the VSMP authority, EPA, or an authorized representative of either entity (including an authorized contractor), upon presentation of credentials and other documents as may be required by law to: 1. Enter upon the operator's premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this general permit; 2. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this general permit; 3. Inspect and photograph at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this general permit; and 4. Sample or monitor at reasonable times, for the purposes of ensuring state permit compliance or as otherwise authorized by the Clean Water Act or the Virginia Stormwater Management Act, any substances or parameters at any location. For purposes of this section, the time for inspection shall be deemed reasonable during regular business hours, and whenever the facility is discharging. Nothing contained herein shall make an inspection unreasonable during an emergency. X. State permit actions. State permits may be modified, revoked and reissued, or terminated for cause. The filing of a request by the operator for a state permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not stay any state permit condition. Y. Transfer of state permits. 1. State permits are not transferable to any person except after notice to the department. Except as provided in Part III Y 2, a state permit may be transferred by the operator to a new operator only if the state permit has been modified or revoked and reissued, or a minor modification made, to identify the new operator and incorporate such other requirements as may be necessary under the Virginia Stormwater Management Act and the Clean Water Act. 2. As an alternative to transfers under Part III Y 1, this state permit may be automatically transferred to a new operator if: a. The current operator notifies the department at least 30 days in advance of the proposed transfer of the title to the facility or property; b. The notice includes a written agreement between the existing and new operators containing a specific date for transfer of state permit responsibility, coverage, and liability between them; and c. The department does not notify the existing operator and the proposed new operator of its intent to modify or revoke and reissue the state permit. If this notice is not received, the transfer is effective on the date specified in the agreement mentioned in Part II I Y 2 b. 3. For ongoing construction activity involving a change of operator, the new operator shall accept and maintain the existing SWPPP, or prepare and implement a new SWPPP prior to taking over operations at the site. Page 28 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) Z. Severability. The provisions of this general permit are severable, and if any provision of this general permit or the application of any provision of this state permit to any circumstance, is held invalid, the application of such provision to other circumstances and the remainder of this general permit shall not be affected thereby. 9VAC25-880-80. (Repealed.) 9VAC25-880-82. (Repealed.) 9VAC25-880-84. (Repealed.) 9VAC25-880-86. (Repealed.) 9VAC25-880-88. (Repealed.) 9VAC25-880-90. (Repealed.) 9VAC25-880-100. Delegation of authority. The director, or his designee, may perform any act of the board provided under this chapter, except as limited by § 62.1-44.14 of the Code of Virginia. FORMS (9VAC25-880) Department of Environmental Quality Construction Activity Operator Permit Fee Form (rev. 01/2014) Notice of Termination - General VPDES Permit for Discharges of Stormwater from Construction Activities (VAR10) (rev. 01/2014) Registration Statement - General VPDES Permit for Discharges of Stormwater from Construction Activities (VAR10) (rev. 01/2014) Transfer Agreement - General VPDES Permit for Discharges of Stormwater from Construction Activities (VAR10) (rev. 01/2014) Page 29 of 29 9VAC25-880 (adopted 12/17/2013 - published 2/24/2014 - effective 7/1/2014) Appendix C VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY PERMIT#: GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM PLAN/ID #: CONSTRUCTION ACTIVITIES (VAR10) TECHNICAL CRITERIA: 1113 ❑ IIC ❑ REGISTRATION STATEMENT 2019 Application type. N NEW PERMIT ISSUANCE (CHOOSE ONE) ❑ MODIFICATION WITH ACREAGE INCREASE ❑ MODIFICATION WITHOUT ACREAGE INCREASE ❑ EXISTING PERMIT RE -ISSUANCE Section I. Operator/Permittee Information. A. Construction Activity Operator (Permittee). The person or entity that is applying for permit coverage and will have operational control over construction activities to ensure compliance with the general permit. A person with signatory authority for this operator must sign the certification in Section V. (per Part III. K. of the VAR10 Permit). Operator Name: Rittonhouse Excavating Contact person: ravis Rittonhouse Address: 31 Suncrest Dr. City, State and Zip Code: cottsville�VA`24590 Phone Number: 34-981-2124 Primary and CC Email: B. Electronic correspondence. To receive an emailed coverage letter or to pay by credit card, you must choose YES and include a valid email. May we transmit correspondence electronically? YES ❑ NO N Section II. Construction Activity Information. A. Include a site map showing the location of the existing or proposed land -disturbing activities, the limits of land disturbance, construction entrances and all waterbodies receiving stormwater discharges from the site. B. Project site location information. Construction Activity Name: Troxell Poultry House Address: 7369 Dyers Mill Lane City and/or County and Zip Code: Scottsville 24590 Construction Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): N37.836743, W78.546513 Latitude and Longitude (6-digit, decimal degrees format): N37.832115°',78.553514" C. Acreage totals for all land -disturbing activities to be included under this permit coverage. Report to the nearest one -hundredth of an acre. Total land area of development (include entire area to be disturbed as approved in the Stormwater Management Plan): 399.71 Primary estimated area to be disturbed (include portions with Erosion and Sediment Control Plan approval only): 7.65 Off -site estimated area to be disturbed (if applicable): /A D. Property Owner Status: FEDERAL ❑ STATE ❑ PUBLIC ❑ PRIVATE N E. Nature of the Construction Activity Description (i.e. commercial, industrial, residential, agricultural, environmental, utility): gricultural - Poultry Houses F. Municipal Separate Storm Sewer System (M54) name(s) (if the site is discharging to a MS4): N/A G. Estimated Project Dates (MM/DD/YYYY). Start Date: 6/7/2021 Completion Date: 6/7/2022 H. Is this construction activity part of a larger common plan of development or sale? YES ❑ NON Rev 11/2020 PAGE 1 1 6 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 I. 6" Order Hydrologic Unit Code (HUC) and Receiving Water Name(s). Include additional areas on a separate page. HUC NAME(S) OF RECEIVING WATERBODY 20802031103 Middle James- Buffalo Section III. Off -site Support Activity Location Information. List all off -site support activities and excavated material disposal areas being utilized for this project. Include additional areas on a separate page. Off -site Activity Name: /A Address: City or County: Off -site Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): Latitude and Longitude (6-digit, decimal degrees format): Is this off -site activity an excavated material disposal area? YES ❑ NO ❑ If this off -site activity is an excavated material disposal area, list the contents of the excavated fill material: Willa separate VPDES permit cover this off -site activity? YES ❑ NO ❑ Section IV. Other Information. A. A stormwater pollution prevention plan (SWPPP) must be prepared in accordance with the requirements of the General VPDES Permit for Discharges of Stormwater from Construction Activities prior to submitting the Registration Statement. By signing the Registration Statement, the operator is certifying that the SWPPP has been prepared. B. Has an Erosion and Sediment Control Plan been submitted to the VESC Authority for review? YES ® NO ❑ Erosion and Sediment Control Plan Approval Date (for the estimated area to be disturbed MM/DD/YYYY): C. Has land -disturbance commenced? YES ❑ NO D. Annual Standards and Specifications. If this project is utilizing approved Annual Standards and Specifications (AS&S), attached the completed AS&S Entity Form. AS&S Entity Name (if different from the Operator identified in Section 1): /A E. Billing information (leave blank if same as the Operator identified in Section 1. above). This entity will receive Annual Permit Maintenance and Permit Modification Fee invoices (if applicable). Billing Name: Contact Name: Broc Troxell Address: 369 Dyers Mill Lane City, State and Zip Code: cottsville, VA 24590 Phone Number: 70-4120364 Primary and CC Email: roxellfarms@gmail.com Rev 11/2020 PAGE 2 16 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 Section V. Certification. A person representing the operator as identified in Section I. A. and meeting the requirementsof 9VAC25-880-70. Part III. K must physically sign this certification. A typed signature is not acceptable. Please note that operator is defined in 9VAC25-870-10 as follows: "Operator" means the owner or operator of any facility or activity subject to the Act and this chapter. In the context of stormwater associated with a large or small construction activity, operator means any person associated with a construction project that meets either of the following two criteria: (i) the person has direct operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications or (ii) the person has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan for the site or other state permit or V5MP authority permit conditions (i.e., they are authorized to direct workers at a site to carry out activities required by the stormwater pollution prevention plan or comply with other permit conditions). In the context of stormwater discharges from Municipal Separate Storm Sewer Systems (M54s), operator means the operator of the regulated M54 system. 9VAC25-880-70. Part III. K. Signatory Requirements. Registration Statement. All Registration Statements shall be signed as follows: a. For a corporation: by a responsible corporate officer. For the purpose of this chapter, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation, or (ii) the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations, the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for state permit application requirements,• and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures, b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively,• or c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this chapter, a principal executive officer of a public agency includes: (i) the chief executive officer of the agency or (ii) a senior executive officer having responsibilityfor the overall operations of a principal geographic unit of the agency. Certification: "I certify under penalty of law that I have read and understand this Registration Statement and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment for knowing violations." Printed Name: Signature (signed in ink): Date Signed: Section VI. Submittal Instructions. Submit this form to the VSMP Authority. If the locality is the VSMP Authority, please send your Registration Statement submittal directly to the locality; do NOT send this form to DEQ. A list of local VSMP Authorities is available here: VSMP Authorities. If DEQ is the VSMP Authority, please send to: If the locality is the VSMP Authority, please send to: Department of Environmental Quality Office of Stormwater Management Suite 1400 PO Box 1105 Richmond VA 23218 constructiongp@deg.virginia.gov Albemarle County, VA 401 McIntire Road Charlottesville, VA 22902 434-243-7929 Rev 11/2020 PAGE 3 16 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT This Registration Statement is for coverage under the General VPDES Permit for Discharges of Stormwater from Construction Activities. This form covers the following permit actions: new permit issuance, existing permit modification with an increase in acreage, existing permit modifications that result in a plan modification but do not result in an increase in disturbed acreage, and reissuance of an active permit coverage. Application type. Select NEW PERMIT ISSUANCE to obtain a new permit coverage. Modifications are for modifying an existing, active permit coverage. Select MODIFICATION WITH ACREAGE INCREASE when the previously approved acreage(s) increases (permit modifications are not performed for decreases in acreage unless they result in plan changes — see Modification WITHOUT Acreage Increase). Select MODIFICATION WITHOUT ACREAGE INCREASE when there is a change to the site design resulting in a change to the approved plans with no increase in acreage(s) Select EXISTING PERMIT REISSUANCE to extend an expiring permit coverage for the next permit cycle and include the existing permit number. Section I. Operator/Permittee Information. A. Construction Activity Operator (Permittee). The person or entity that is applying for permit coverage and will have operational control over construction activities to ensure compliance with the general permit. For companies, use the complete, active, legal entity name as registered with a state corporation commission. Entities that are considered operators commonly consist of the property owner, developer of a project (the party with control of project plans and specifications), or general contractor (the party with day-to-day operational control of the activities at the project site that are necessary to ensure compliance with the general permit). If an individual person is listed as the operator, that person (or a legal representative of) must sign the certification in Section V. An operator may be one of the following: 9VAC25-870-10. Definitions. "Operator" means the owner or operator of any facility or activity subject to the Act and this chapter. In the context of stormwater associated with a large or small construction activity, operator means any person associated with a construction project that meets either of the following two criteria: (i) the person has direct operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications or (ii) the person has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan far the site or other state permit or VSMP authority permit conditions (i.e., they are authorized to direct workers at a site to carry out activities required by the stormwater pollution prevention plan or comply with other permit conditions). In the context of stormwater discharges from Municipal Separate Storm Sewer Systems (M54s), operator means the operator of the regulated MS4 system. "Owner" means the Commonwealth or any of its political subdivisions including, but not limited to, sanitation district commissions and authorities, and any public or private institution, corporation, association, firm or company organized or existing under the laws of this or any other state or country, or any officer or agency of the United States, or any person or group of persons acting individually or as a group that owns, operates, charters, rents, or otherwise exercises control over or is responsible for any actual or potential discharge of sewage, industrial wastes, or other wastes or pollutants to state waters, or any facility or operation that has the capability to alter the physical, chemical, or biological properties of state waters in contravention of § 62.1-44.5 of the Code of Virginia, the Act and this chapter. "Person " means any individual, corporation, partnership, association, state, municipality, commission, or political subdivision of a state, governmental body, including a federal, state, or local entity as applicable, any interstate body or any other legal entity. B. May we transmit correspondence electronically? If you choose YES to this question and provide an email address in Section I. A., all correspondence, forms, invoices and notifications will be transmitted by email to the operator. This will also give the operator the ability to pay by credit card and to receive Dermit coveraee aooroval letters immediately upon Dermit aooroval. Section II. Construction Activity Information. A. A site map indicating the location of the existing or proposed land -disturbing activities, the limits of land disturbance, construction entrances and all water bodies receiving stormwater discharges from the site must be included with the submittal of this form. Aerial imagery maps or topographic maps showing the required items are acceptable. Plan sheet sized site maps are not required. Please consult your VSMP authority if you have additional questions regarding site map requirements. B. Construction Activity Name and location. Provide a descriptive project name (it is helpful to use the same naming convention as listed on the Stormwater Management plans), 911 street address (if available), city/county of the construction activity, and the 6-digit latitude and longitude in decimal degrees format for the centroid, main construction entrance or start and end points for linear projects (i.e. 37.1234N/-77.1234W). C. Acreage totals for all land -disturbing activities, on- and off -site, to be included under this permit. Acreages are to be reported to the nearest one -hundredth acre (two decimal places; i.e. 1.15 acres). Provide the total acreage of the primary development site as approved on the Stormwater Management Plans and the primary on -site estimated acreage to be disturbed by the construction activity as approved under the Erosion and Sediment Control Plans. The off -site estimated area to be disturbed is the sum of the disturbed acreages for all off -site support activities to be covered under this general permit. Do not include the off -site acreage totals in the primary, on -site total and estimated disturbed acreage totals. Permit fees are calculated based on your disturbed acreage total for all on- and off -site areas being disturbed under this permit coverage (the sum of all on -site and off -site disturbed acreages). D. Property owner status. The status of the construction activity property owner. Any property not owned by a government entity or agency (i.e. federal, state or local governments) is PRIVATE. Rev 11/2020 PAGE 4 16 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT E. Nature of the construction activity description. Choose the designation that best describes the post -construction use of this project (you may choose more than one). (i.e. Residential, Commercial, Industrial, Agricultural, Environmental, Educational, Oil and Gas, Utility, Transportation, Institutional, etc.). Describe the post -construction use of the project (i.e. Commercial — one new office building and associated parking and utilities; Transportation— Linear roads, sidewalks and utilities; Agricultural-3 Poultry Houses, etc.). F. Municipal Separate Storm Sewer System (MS4) name(s) if discharging to a MS4. If stormwater is discharged through a MS4 (either partially or completely), provide the name of the MS4(s) that will be receiving water from this construction activity. The MS4 name is typically the town, city, county, institute or federal facility where the construction activity is located. G. Estimated project dates. Provide the estimated project start date and completion date in Month/Day/Year or MM/DD/YYYY format (i.e. 07/30/2019). H. Is this construction activity is part of a larger common plan of development or sale? "Common plan of development or sale" means a contiguous area where separate and distinct construction activities may be taking place at different times on different schedules per 9VAC25-870-50. Definitions. Le. a subdivision, commercial development, business park, etc. I. 5th Order Hydrologic Unit Code (HUC) and associated Receiving Water Name(s). Provide all 5th order HUCs and receiving waterbody names, for the primary site and any Off -site areas included under this permit coverage, that could potentially receive stormwater runoff discharging from this activity. The HUC can be either a 12-digit number (i.e. 0208010101) or 2-letter, 2-number code (i.e. JL52). Include additional HUCs or receiving waters on a separate page. You may utilize DE(Xs web -based GIS application, VEGIS, to obtain this information. • VEGIS application link: DEQ's VEGIS Mapping Application • Instructions for utilizing DE(Xs VEGIS application link: CGP-GIS HUC Instructions Section III. Off -site Support Activity Location Information. This general permit also authorizes stormwater discharges from support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) located on -site or off -site provided that (i) the support activity is directly related to a construction activity that is required to have general permit coverage; (ii) the support activity is not a commercial operation, nor does it serve multiple unrelated construction activities by different operators; (III) the support activity does not operate beyond the completion of the construction activity it supports; (iv) the support activity is identified in the Registration Statement at the time of general permit coverage; (v) appropriate control measures are identified in a SWPPP and implemented to address the discharges from the support activity areas; and (vi) all applicable state, federal, and local approvals are obtained for the support activity. Off -site activity name and location information. Provide a descriptive off -site project name, 911 street address (if available), construction entrance location (address or decimal degrees coordinates and description), city/county and the 6-digit latitude and longitude in decimal degrees (i.e. 37.1234N, 77.1234W) of all off -site support activities. Indicate whether the off -site support activity will be covered under this general permit or a separate VPDES permit. If excavated material (i.e., fill) will be transported off -site for disposal, the name and physical location address, when available, of all off -site excavated material disposal areas including city or county; 5-digit latitude and longitude in decimal degrees (i.e. 37.1234N, 77.1234W) and the contents of the excavated material. List additional off -site areas to be included under this permit coverage on a separate page. Off -site areas not included on this registration will need to obtain coverage under a separate VPDES permit. Section IV. Other Information. A. A stormwater pollution prevention plan (SWPPP) must be prepared prior to submitting the Registration Statement per 9VAC25-880. See 9VAC25-880-70. Part II. of the General Permit for the SWPPP requirements. B. If the Erosion and Sediment Control Plan for the estimated area to be disturbed listed in Section II. C. has been submitted to the VESC Authority for review and plan approval, choose YES. If you are submitting this application to reissue an existing permit coverage, please provide the date that the VESC Authority approved the Erosion and Sediment Control Plan for the estimated area to be disturbed. C. If land disturbance has commenced, choose YES. "Land disturbance" or "land -disturbing activity" means a man-made change to the land surface that may result in soil erosion or has the potential to change its runoff characteristics, including construction activity such as the clearing, grading, excavating, or filling of land per §62.1-44.15:24. Definitions. D. If this project is using approved Annual Standards and Specifications (AS&S), attach the completed AS&S Entity Form. If the AS&S Entity is different from the operator identified in Section I. A., list the AS&S Entity Name. The AS&S entity is the entity or agency that holds the approved annual standards & specification. Please indicate if this project is also requesting a plan waiver. • AS&S Entity Form link: Annual Standards and Specifications Entity Information Form Rev 11/2020 PAGE 5 16 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT E. Billing information. If the person or entity responsible for bi I ling/invoicing is different from the operator, please complete this section. If they are the same, leave this section blank. Section V. Certification. A properly authorized individual associated with the operator identified in Section I. A. of the Registration Statement is responsible for certifying and signing the Registration Statement. A person must physically sign the certification, a typed signature is unacceptable. State statutes provide for severe penalties for submitting false information on the Registration Statement. State regulations require that the Registration Statement be signed as follows per 9VAC25-880-70 Part III. K. 1.: a. For a corporation: by a responsible corporate officer. For the purpose of this part a responsible corporate officer means: (i) A president secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation, or (fi) the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively. c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this part a principal executive officer of a public agency includes: (i) The chief executive officer of the agency, or (ii) Asenior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. Section VI. Submittal Instructions. Submit this form to the VSMP Authority that has jurisdiction for your construction activity. The VSMP Authority may be either DEQ or your locality depending on the location and type of project. If your project is under the jurisdiction of a Local VSMP Authority, please contact the locality for additional submittal instructions. A blank area is provided for the Local VSMP Authority's mailing address. Who is the VSMP Authority forme aroiect7 DEQ or the locality7 • DEC: DEQis the VSMP Authority and administers permit coverage for land -disturbing activities that are: ➢ within a locality that is not a VSMP Authority; ➢ owned by the State or Federal government; or ➢ utilizing approved Annual Standards and Specifications. • The Locality: The local government (locality) is the VSMP Authority and administers permit coverage for all other projects not covered by DEQ as listed above. For these projects, please submit permit forms directly to the Local VSMP Authority. A list of Local VSMP Authorities is available on DEQ's website here: Local VSMP Authority List. www.deg.vi rgi nia.goy/Programs/Water/Sto rmwaterMa nage me nt/VSM PPe rm its/Constructio nG en era I Permit.aspx Email the completed and signed form to: constructiongpPdea.vireinia.eov Rev 11/2020 PAGE 6 16 Appendix D Appendix D — Inspection Report - Construction Road Stabilization Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Construction Road Stabilization (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Silt Fence Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Silt Fence (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Storm Drain Inlet Protection Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Storm Drain Inlet Protection (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Culvert Inlet Protection Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Culvert Inlet Protection (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Temporary Diversion Dike Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Temporary Diversion Dike (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Temporary Sediment Basin Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Temporary Sediment Basin (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Outlet Protection Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Outlet Protection (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report Project Name: Troxell Poultry House SWPPP Contact: - Surface Roughening Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report Project Name: Troxell Poultry House SWPPP Contact: - Surface Roughening (CONTINUED) Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Top Soiling Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Top Soiling (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Temporary Seeding Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Temporary Seeding (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report Project Name: Troxell Poultry House SWPPP Contact: - Permanent Seeding Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report Project Name: Troxell Poultry House SWPPP Contact: - Permanent Seeding (CONTINUED) Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Mulching Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Mulching (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report Project Name: Troxell Poultry House SWPPP Contact: - Soil Stabilization Blankets and Matting Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Soil Stabilization Blankets and Matting (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix D — Inspection Report - (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix E Appendix E — Corrective Action Log Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix E — Corrective Action Log (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Inspection Date Inspector Names Location/ Weather Description of Discharge or Deficiency if anplanned Corrective Action Needed (including date/responsibleperson) Date Action Taken/Res onsible person Appendix F Appendix F — SWPPP Amendment Log Project Name: Troxell Poultry House SWPPP Contact: Amendment No. Description of the Amendment Date of Amendment Amendment Prepared by Names and Title Appendix F — SWPPP Amendment Log (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Amendment No. Description of the Amendment Date of Amendment Amendment Prepared by Names and Title Appendix G Appendix G — Subcontractor Certifications/Agreements SUBCONTRACTOR CERTIFICATION STORMWATER POLLUTION PREVENTION PLAN Project Number: Project Title: Operator(s): As a subcontractor, you are required to comply with the Stormwater Pollution Prevention Plan (SWPPP) for any work that you perform on -site. Any person or group who violates any condition of the SWPPP may be subject to substantial penalties or loss of contract. You are encouraged to advise each of your employees working on this project of the requirements of the SWPPP. A copy of the SWPPP is available for your review at the office trailer. Each subcontractor engaged in activities at the construction site that could impact stormwater must be identified and sign the following certification statement: I certify under the penalty of law that I have read and understand the terms and conditions of the SWPPP for the above designated project and agree to follow the BMPs and practices described in the SWPPP. This certification is hereby signed in reference to the above named project: Company: Address: Telephone Number: Type of construction service to be provided: Signature: Title: Date: Appendix G — Subcontractor Certifications/Agreements SUBCONTRACTOR CERTIFICATION STORMWATER POLLUTION PREVENTION PLAN Project Number: Project Title: Operator(s): As a subcontractor, you are required to comply with the Stormwater Pollution Prevention Plan (SWPPP) for any work that you perform on -site. Any person or group who violates any condition of the SWPPP may be subject to substantial penalties or loss of contract. You are encouraged to advise each of your employees working on this project of the requirements of the SWPPP. A copy of the SWPPP is available for your review at the office trailer. Each subcontractor engaged in activities at the construction site that could impact stormwater must be identified and sign the following certification statement: I certify under the penalty of law that I have read and understand the terms and conditions of the SWPPP for the above designated project and agree to follow the BMPs and practices described in the SWPPP. This certification is hereby signed in reference to the above named project: Company: Address: Telephone Number: Type of construction service to be provided: Signature: Title: Date: Appendix H Appendix H — Grading and Stabilization Activities Log Project Name: Troxell Poultry House SWPPP Contact: Date Grading Activity Initiated Description of Grading Activity Date Grading Activity Ceased (Indicate Temporary or Permanent Date When Stabilization Measures are Initiated Description of Stabilization Measure and Location Appendix H — Grading and Stabilization Activities Log (CONTINUED) Project Name: Troxell Poultry House SWPPP Contact: Date Grading Activity Initiated Description of Grading Activity Date Grading Activity Ceased (Indicate Temporary or Permanent Date When Stabilization Measures are Initiated Description of Stabilization Measure and Location Appendix I Appendix I — Delegation of Authority Form Delegation of Authority I, (name), hereby designate the person or specifically described position below to be a duly authorized representative for the purpose of overseeing compliance with environmental requirements, including the Construction General Permit, at the construction site. The designee is authorized to sign any reports, stormwater pollution prevention plans and all other documents required by the permit. (name of person or position) (company) (address) (city, state, zip) (phone) By signing this authorization, I confirm that I meet the requirements to make such a designation as set forth in (Reference State Permit), and that the designee above meets the definition of a "duly authorized representative" as set forth in (Reference State Permit). I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations. Name: Company: Title: Signature: Date: Appendix J VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION ACTIVITIES (VAR10) NOTICE OF TERMINATION 2019 Permit Coverage Number(VAR10####) Section I. Operator/Permittee Information. The person or entity that has active permit coverage approval and operational control over construction activities to ensure compliance with the general permit. A person with signatory authority for this operator must sign the certification in Section VII (per Part III. K. of the VAR10 Permit). Construction Activity Operator Name: Contact Person: Travis Rittonhouse Address: City, State, Zip Code: Phone Number: 434-981-2124 Primary Email: CC Email: Section II. Construction Activity Location Information. Project site information. Construction Activity Name: Troxell Poultry House Address: 7369 Dyers Mill Lane City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): N37.832115".78.553514'"' Section III. Reason for Terminating Coverage under the General Permit. The operator shall submit a Notice of Termination within 30 days after meeting one or more of the following conditions (select one or more): ❑ A. Necessary permanent control measures included in the SWPPP for the site are in place and functioning effectively and final stabilization has been achieved on all portions of the site for which the operator is responsible. When applicable, long-term responsibility and maintenance requirements for permanent control measures shall be recorded in the local land records prior to the submission of a Notice of Termination; ❑ B. Another operator has assumed control over all areas of the site that have not been finally stabilized and obtained coverage for the ongoing discharge; ❑ C. Coverage under an alternative VPDES or state permit has been obtained; or ❑ D. For residential construction only, temporary soil stabilization has been completed, the operator has provided written notification to the homeowner about the importance of final stabilization and incorporating a copy of the notification and signed certification statement into the SWPPP. and the residence has been transferred to the homeowner. Rev 04/2019 PAGE 1 16 CONSTRUCTION GENERAL PERMIT (VAR10) NOTICE OF TERMINATION 2019 Section IV. Participation in a Regional Stormwater Management Plan. If your site discharges to a regional stormwater management facility, provide information related to the regional stormwater management plan. Attach a separate list if discharging to multiple regional facilities. Regional Stormwater Management Facility Type: Address: City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): Total Acres Treated by Regional Facility (report to one -hundredth of an acre): Impervious Acres Treated by Regional Facility (report to one -hundredth of an acre): Section V. Perpetual Nutrient Credits. If your site is utilizing nutrient credits, provide information related to the perpetual nutrient credits that were acquired in accordance with § 62.1-44.15:35 of the Code of Virginia. Attach a separate list if needed. Nonpoint Nutrient Credit Generating Entity (Bank Name): Perpetual Nutrient Credits Acquired (pounds/acres/year): Include the affidavit of sale for all nutrient credits acquired. Is the affidavit of sale of nutrient credits attached? DYES ONO Section VI. Permanent Control Measures. If applicable, list the post -development stormwater management facilities or best management practices (BMPs) that were constructed and installed as part of this activity to comply with the Stormwater management technical criteria (structural and nonstructural, on -site and off -site). Attach a separate list if needed. If you have permanent control measures, the following items are required to be included with this form in order to complete your Notice of Termination submittal: ❑ A. Engineer's Certification Statement ❑ B. As -built plans (construction record drawings) —digital ❑ C. As -built plans (construction record drawings) —full-sized, paper ❑ D. Stormwater Management Plans —digital ❑ E. BMP Maintenance Agreement — notarized original, for public and private projects under DEQ's VSMP Authority Stormwater Management Facility Types (please Choose from the following bmp types): Bioretention 1 Extended detention -enhanced Other IIC (manufactured Soil Amendments Bioretention 2 Filtering Practice 1 treatment device, etc.) Urban Bioretention Bioretention basin Filtering Practice 2 Permeable Pavement 1 Vegetated filter strip Bioretention filter Grass Channel Permeable Pavement 2 Vegetated Roof 1 Constructed Wetland 1 Constructed Wetland 2 Constructed wetlands Dry Swale 1 Dry Swale 2 Extended detention (2 x WQ Vol) Extended Detention Pond 1 Extended Detention Pond 2 Grassed Swale Infiltration (1 x WQ Vol) Infiltration (2 x WQ Vol) Infiltration 1 Infiltration 2 Other 1113 (manufactured treatment device, etc.) Rainwater Harvesting Retention basin 1 (3 x WQ Vol) Retention basin 11 (4 x WQ Vol) Retention basin 111 (4 x WQ Vol with aquatic bench) Sand filter Sheetflow to Vegetated Filter or Conserved Open Space 2 Vegetated Roof 2 Wet Pond 1 Wet Pond 2 Wet Swale 1 Wet Swale 2 Rev 04/2019 PAGE 2 16 CONSTRUCTION GENERAL PERMIT (VAR10) NOTICE OF TERMINATION 2019 Stormwater Management Facility#1 BMP Type: Date BMP Became Functional: Address (if available): City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): Receiving Water(s) (outfall discharge): Total Acres Treated (report to one -hundredth of an acre): Impervious Acres Treated (report to one -hundredth of an acre): Stormwater Management Facility#2 BMP Type: Date BMP Became Functional: Address (if available): City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): Receiving Water(s) (outfall discharge): Total Acres Treated (report to one -hundredth of an acre): Impervious Acres Treated (report to one -hundredth of an acre): Stormwater Management Facility#3 BMP Type: Date BMP Became Functional: Address (if available): City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): Receiving Water(s) (outfall discharge): Total Acres Treated (report to one -hundredth of an acre): Impervious Acres Treated (report to one -hundredth of an acre): Rev 04/2019 PAGE 3 16 CONSTRUCTION GENERAL PERMIT (VAR10) NOTICE OF TERMINATION 2019 Section VIL Certification. This Certification must be signed by a person representing the operator identified in Section I. and meeting the requirements of 9VAC25-880-70 Part III K. Certification: "I certify under penalty of law that I have read and understand this Notice of Termination and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment for knowing violations." Printed Name: Signature (signed in ink): Date: Section Vill. Submittal Instructions. Please submit this form to the Virginia Stormwater Management Program (VSMP) Authority that has jurisdiction for your construction activity. If the locality is the VSMP Authority, please submit your form directly to the locality; do NOT send this form to DEQ. A list of local VSMP Authorities is available here: VSMP Authorities. If DEC. is the VSMP Authorityplease send to: Department of Environmental Quality Office of Stormwater Management Suite 1400 PO Box 1105 Richmond VA 23218 con stru ct io n¢p @dea.vi r¢i n ia.¢ov If the locality is the VSMP Authority, please send to: The Local VSMP Authority (insert address below) Albemarle County, VA 401 McIntire Road Charlottesville, VA 22902 434-243-7929 Permit terminations may be delayed if there are outstanding annual permit maintenance fee balances due. Rev04/2019 PAGE 1 6 CONSTRUCTION GENERAL PERMIT (VAR10) NOTICE OF TERMINATION 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT A complete and accurate Notice of Termination is required for terminating coverage under the General VPDES Permit for Discharges of Stormwater from Construction Activities. Termination shall become effective upon notification from the department that the provisions of termination have been met or 60 days after submittal of a complete and accurate Notice of Termination, whichever occurs first. Authorization to discharge terminates at midnight on the date that the Notice of Termination is submitted unless otherwise notified by the VSMP authority or the department. Permit Coverage Number. Include your existing, active permit coverage number. Example: VAR10#### Section I. Operator/Permittee Information. The construction activity operator (permittee). The permittee with active permit coverage and that has operational control over the construction activities to ensure compliance with the general permit. For companies, use the complete, active, legal entity name as registered with a state corporation commission. Entities that are considered operators commonly consist of the property owner, developer of a project (the party with control of project plans and specifications), or general contractor (the party with day-to-day operational control of the activities at the project site that are necessary to ensure compliance with the general permit). If an individual person is named as the operator, that person (or a representative of) must sign the certification in Section VII. Section II. Construction Activity Location Information. Project site information. Complete this section with the same information as listed on the current registration statement. A list of active permits and corresponding location information is available on our website. Section III. Reason for Terminating Coverage under the General Permit. The operator shall submit the Notice of Termination no later than 30 days after one or more of the termination conditions being met. Authorization to discharge terminates at midnight on the date that the Notice of Termination is submitted to the VSMP Authority, unless otherwise notified by the VSMP authority or the Department. Termination of authorizations to discharge for the conditions shall be effective upon notification from the Department that the provisions of termination have been met or 60 days after submittal of the Notice of Terminations, whichever occurs first. The operator of the construction activity shall submit a Notice of Termination within 30 days after meeting one or more of the following conditions (you may select one or more of these conditions): • [A] Necessary permanent control measures included in the SWPPP for the site are in place and functioning effectively and final stabilization has been achieved on all portions of the site for which the operator is responsible has operational control. When applicable, long-term responsibility and maintenance requirements for permanent control measures shall be recorded in the local land records prior to the submission of a complete and accurate Notice of Termination; • [B] Another operator has assumed control over all areas of the site that have not been finally stabilized and obtained coverage for the ongoing discharge; • [C] Coverage under an alternative VPDES or state permit has been obtained; or • [D] For individual lots in residential construction only, temporary soil final stabilization as defined in 9VAC25-880-1, has been completed and the residence has been transferred to the homeowner. Section IV. Participation in a Regional Stormwater Management Plan. Where applicable, include information for each regional stormwater management facility to which this site contributes. If your site is contributing to more than one regional facility, please include the information for each facility in a separate list. The following information shall be included for each regional stormwater management facility installed: • the type stormwater management facility (see the list of facility types on page 2 of the Notice of Termination); • the physical location of the facility, including city or county, and latitude and longitude in decimal degrees; • the receiving water to which the regional facility is discharging; and • the number of total and impervious acres treated by the regional stormwater management plan to the nearest one -hundredth of an acre. The total of the impervious acreage may equal but not exceed the total acreage. Section V. Perpetual Nutrient Credits. If your site is utilizing nutrient credits, provide information related to all perpetual nutrient credits acquired in accordance with § 62.1-44.15:35 of the Code of Virginia. Attach a separate list if needed. Attach the affidavit(s) of sale for the purchase of all nutrient credits acquired for this activity. Rev 04/2019 PAGE 5 16 CONSTRUCTION GENERAL PERMIT (VAR10) NOTICE OF TERMINATION 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT Section VI. Permanent Control Measures. If applicable, list all post -development stormwater management facilities or best management practices (BMPs) that were constructed and installed as part of this activity to comply with the stormwater management technical criteria (structural and nonstructural, on -site and off -site). Choose the type from the list provided in the Notice of Termination form Section VI. If you have multiple BMPs, attach a separate list if needed. The following information shall be included for each permanent control measure installed: • the type of permanent control measure receiving the discharge (choose from list provided); • the date that it became functional as a permanent control measure (MM/DD/YYYY); • the location of the BMP, including city or county, and latitude and longitude in decimal degrees; • the receiving water(s) to which the permanent control measure discharges;and • the number of total and impervious acres treated by the permanent control measures to the nearest one -hundredth of an acre. The total of the impervious acreage may equal but not exceed the total acreage. The following items are required to be submitted with the Notice of Termination if you have permanent control measures: • Engineer's Certification Statement. Signed by a professional registered in the Commonwealth of Virginia, certifying that the stormwater management facilities were constructed in accordance with the approved plan. • Construction record drawing(s) (as -built plan) in a format as specified by the VSMP authority for permanent stormwater management facilities in accordance with 9VAC25-870-55 D appropriately sealed and signed. One digital and one full-sized paper copy. • Stormwater management plans (digital) • BMP Maintenance Agreement. Submit an original, signed and notarized BMP Maintenance Agreement for all public and private permits where DEQ is the VSMP Authority. Termination is not final until you submit the local court record of receipt to DEQ showing that the signed Stormwater Management Maintenance Agreement was recorded with the land deed. Section VIL Certification. This Certification must be signed by a person representing the operator identified in Section I. and meeting the requirements of 9VAC25-880-70. Part III. K. Section Vill. Submittal Instructions. Submit this form to the VSMP Authority that has jurisdiction for your construction activity. The VSMP Authority may be either DEQ or your locality depending on the location and type of project. If your project is under the jurisdiction of a Local VSMP Authority, please contact the locality for additional submittal instructions. A blank area is provided for the Local VSMP Authority to include their mailing address. Who is the VSMP Authority for myaroiect? DEQ or the locality? • DEQ: DEQ is the VSMP Authority and administers permit coverage for land -disturbing activities that are: ➢ within a locality that is not a VSMP Authority; ➢ owned by the State or Federal government; or ➢ utilizing approved Annual Standards and Specifications. • The Locality: The local government (locality) is the VSMP Authority and administers permit coverage for all other projects not covered by DEQ as listed above. For these projects, please submit permit forms directly to the Local VSMP Authority. A list of Local VSMP Authorities is available on DEQ's website here: Local VSMP Authority List. DEQ'S CONSTRUCTION GENERAL PERMIT WEBSITE http://www.deg.virgin ia.gov/Programs/Water/StormwaterManagement/VSM PPermits/ConstructionGeneralPermit.aspx Rev 04/2019 PAGE 6 16 General Permit for Discharges of Stormwater from Construction Activities (VAR10) Transfer Agreement Instructions: The General Permit for Discharges of Stormwater from Construction Activities may be automatically transferred to a new operator if the current operator notifies the permit - issuing authority at least 30 days in advance of the proposed transfer of the title to the facility or property, the notice includes a written agreement between the existing and new operator containing a specific date for transfer of permit responsibility, coverage, and liability between them. Please mail the original copy of this agreement to: Department of Environmental Quality Office of Stormwater Permits, 10th Floor P.O. Box 1106 Richmond, VA 23218 Permit Coverage Number: Construction Activity Name: Date of Transfer: CURRENT OPERATOR (The permit coverage was authorized for this operator): Construction Activity Operator: Address: City: Daytime Phone Number: State: Zip: "I hereby agree to the transfer of the above referenced Construction Stormwater General Permit coverage." Print Name: Title: Signed: Date: NEW OPERATOR (The permit coverage will be transferred to this operator): Construction Activity Operator: Address: City: Daytime Phone Number: State: Zip: "I hereby agree to the transfer of the above referenced Construction Stormwater General Permit coverage, and agree to accept all permit responsibility, coverage, and liability of the permit." Print Name: Title: Signed: Date: (Please sign in INK and submit the original to DEQ at the above referenced address and retain a copy for your files.) (DEQ 199-191) (06/13) Appendix K CONTACTS: Erosion and Sediment Control Administrator Albemarle County: (434) 972-4126 City of Charlottesville: Augusta County: (540) 245-5700 City of Harrisonburg: Bath County: (540) 839-7236 City of Staunton: Frederick County: (540) 665-5643 City of Waynesboro: Greene County: (434) 985-5282 Highland County: Madison County: (540) 948-6102 Nelson County: (434) 263-7082 Orange County: (540) 672-4347 Page County: (540) 743-1324 Rockbridge County: (540) 464-9662 Rockingham County: (540)564-3047 Shenandoah County: (540) 459-6190 Warren County: (540) 636-3354 Department of Environmental Quality Tidewater Regional Office Virginia Beach (757) 518-2000 Piedmont Regional Office Richmond/Glen Allen (804) 527-5020 Northern Regional Office Woodbridge (703) 583-3800 Valley Regional Office Harrisonburg (540) 574-7800 Blue Ridge Regional Office Lynchburg/Roanoke (434) 582-5120 Southwest Regional Office Abington (276) 676-4800 Other DEQ Locations: Central Office Richmond (804) 698-4000 Air Monitoring Richmond (804) 698-4424 Surface Water Investigations Charlottesville (434) 293-1020 (434)970-3182 (540)432-7700 (540)332-3862 (540)942-6604 (540)463-2323 When to Report an Oil Spill OL SPILL CIS THE SPILL TO VBS Z NAVIGABLE WATERS ES OR ADJOINING •. SHORELINES? 4 10 COULD ,".""WATER QUALITY YES {" STANDARDS BE VIOLATED? yr COULD HE SPILL CAUS YES A FILM, OSHEEN,0 OR N-,1 SGGLGRATI GNP =+ COULD THE SPILL CAUSE YES Al IIf3C�F C31? �FiF+fY K7F� THE RE13131MNG rnoms APPUW FCwT Appendix L EROSION & SEDIMENT CONTROL NOTES ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS 9VAC25-840-40 EROSION AND SEDIMENT CONTROL REGULATIONS. ES-2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. ES-3: SEDIMENT BASINS, TRAPS, AND ANY OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCES TAKE PLACE. PERIMETER DIKES AND SEDIMENT BARRIERS SHALL BE CONSTRUCTED AS A SECOND STEP IN ANY LAND DISTURBING ACTIVITY. ES-4: STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. ES-5: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN INCLUDING THE NARRATIVE SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. ES-6: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. ES-7: THE CONTRACTOR IS RESPONSIBLE FOR THE INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ES-8: ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. ES-9: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. ES-10: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. ES-11: PERMANENT OR TEMPORARY SOIL STABILIZATIONS SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE A FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED FOR LONGER THAN 14 DAYS). PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. ES-12: A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT, IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. ES-13: DURING CONSTRUCTION OF THE PROJECT SOIL STOCK PILES SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. ES-14: CUT AND FILL SLOPES SHALL BE CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OR PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED. ES-15: ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT WATER CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT. ES-16: BEFORE NEWLY CONSTRUCTED STORM WATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONS, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. ES-17: WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION NONERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBLE COVER MATERIALS ES-18: WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN A SIX-MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIAL SHALL BE PROVIDED. ES-19: THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETE. ES-20: TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS. ES-21: UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B.EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. C.EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OF OFF -SITE PROPERTY. D.MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS. F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. ES-22: WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROAD BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. ES-23: ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. ES-24: ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. THEY WILL BE INSPECTED FOR UNDERMINING, DETERIORATION, EROSION, AND EXCESS DEPOSITED MATERIAL. ALL DEFICIENCIES WILL BE CORRECTED IMMEDIATELY. EXCESS MATERIAL WILL BE SPREAD ON THE SITE IN A MANNER WHICH WILL NOT LEAD TO FURTHER EROSION POTENTIAL. ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH TEMPORARY OR PERMANENT SEEDING WITHIN 7 DAYS FOLLOWING FINISH GRADING. SEEDING SHALL BE DONE ACCORDING TO STANDARD & SPECIFICATION 3.31 TEMPORARY OR 3.32 PERMANENT SEEDING, OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND DCR TECHNICAL BULLETIN #4. APPLICATION RATES FOR MULCH, FERTILIZER, LIMESTONE AND SEEDING MIXTURE SHALL BE AS INDICATED BELOW. TEMPORARY PERMANENT SPECIES LBS/ACRE SPECIES LBS/ACRE ANNUAL RYEGRASS & CEREAL RYE 50-100 KENTUCKY 31 FESCUE 128 ANNUAL RYE GRASS 60-100 RED TOP GRASS 2 GERMAN MILLET 50 SEASONAL NURSE CROP* 20 TOTAL 160-250 TOTAL 150 *USE SEASONAL NURSE CROP AS INDICATED BELOW ❑ SEPT. 1st - FEB. 15th g$ ANNUAL RYE & CEREAL RYE ❑ MAR. - MAY 15th ANNUAL RYE ❑ FEB. 16th - APR. 30th ANNUAL RYEGRASS ❑ MAY 16th - AUG. 15th FOXTAIL MILLET ❑ MAY 1st - AUG. 31st GERMAN MILLET ❑ AUG. 16th - OCT. ANNUAL RYE ❑ NOV. - FEB. WINTER RYE FERTILIZER: 10-10-10 0 450 LBS/ACRE (10 LBS/1,000 SF) FERTILIZER: 10-20-10 0 500 LBS/ACRE (12 LBS/1,000 SF) PULVERIZED AGRICULTURAL UMESTONE: 2 TONS/ACRE (90 LBS/1,000 SF) I PULVERIZED AGRICULTURAL UMESTONE: 2 TONS/ACRE (90 LBS/1,000 SF) ORGANIC MULCH MATERIALS AND APPLICATION RATES VESCH TABLE 3.35-A RATES MULCHES PER ACRE PER 1000 SF NOTES: 1j - 2 TONS 70 - 90 Ibs. FREE FROM WEEDS AND COARSE MATTER. MUST BE ANCHORED. STRAW OR HAY (MIN. 2 TONS FOR SPREAD WITH MULCH BLOWER OR BY HAND WINTER COVER) FIBER MULCH MINIMUM 35 Ibs. DO NOT USE AS MULCH FOR WINTER COVER OR DURING HOT, DRY 1500 Ibs. PERIODS.* APPLY AS SLURRY CORN STALKS 4 - 6 tons 185 - 275 Ibs. CUT OR SHREDDED IN 4-6" LENGTHS. AIR DRIED. DO NOT USE IN FINE TURF AREAS. APPLY WITH MULCH BLOWER OR BY HAND. FREE OF COARSE MATTER, AIR-DRIED. TREAT WITH 12 Ibs. WOOD CHIPS 4 - 6 tons 185 - 275 Ibs. NITROGEN PER TON. DO NOT USE IN FINE TURF AREAS. APPLY WITH MULCH BLOWER, CHIP HANDLER, OR BY HAND. BARK CHIPS OR 50 - 70 c.y. 1 - 2 c.y. FREE OF COARSE MATTER. AIR-DRIED. DO NOT USE IN FINE TURF SHREDDED BARK AREAS. APPLY WITH MULCH BLOWER, CHIP HANDLER, OR BY HAND * WHEN FIBER MULCH IS THE ONLY AVAILABLE MULCH DURING PERIODS WHEN STRAW SHOULD BE USED, APPLY AT A MINIMUM RATE OF 2000 Ibs./ac. OR 45 Ibs./1000 sq. ft. ENTRANCE \ \s APPROXIMATE LOCATION OF `OAS! TRANSITION FROM PUBLIC �F` ROAD TO PRIVATE DRIVE S'O DYERS MILL LN. / RT. 713 x EXISTING DRIVEWAY I� / `\ "X EXISTING SERVICE ENTRANCE ss TO SITE \ O 1900. \x �I \ // GRAPHIC SCALE 300' 0 300, 600' SCALE: 1 "=300' LEGEND EXISTING BUILDING - PROPOSED BUILDING SITE DESIGN: BLACKWELL ENGINEERING ATTN: NATHAN BLACKWELL 566 EAST MARKET STREET HARRISONBURG, VA 22801 540-432-9555 DEVELOPER: BROC TROXELL 7369 DYERS MILL LANE SCOTTSVILLE, VA 24590 570-4120364 PROPERTY INFO: TM #129-5 7369 DYERS MILL LANE SCOTTSVILLE, 24590 MAN. DISTRICT- SAMUAL MILLER AREA = 399.71 ACRES ZONED: Rural Areas PROPOSED USE: AGRICULTURAL - POULTRY HOUSES FEMA FLOOD ZONE: X DISTURBED AREA = 7.65 AC PROPOSED ROAD/EOP EXISTING ROAD APPROXIMATE PROPERTY LINE 0 GRAVEL AREA 0 CONCRETE AREA Q © REVISION SYMBOLS ___}23e___ EXISTING CONTOURS 1z� PROPOSED CONTOURS 0000c0 PROPOSED/EX DITCH OR SWALE + 28.5 PV PROPOSED SPOT ELEVATION 4#= DRAINAGE FLOW cas CONSTRUCTION ROAD STABILIZATION (3.03) O SILT FENSE (3.05) iv STORM DRAIN INLET PROTECTION (3.07) av CULVERT INLET PROTECTION (3.08) DD TEMPORARY DIVERSION DIKE (3.09) SB TEMPORARY SEDIMENT BASIN (3.14) oP OUTLET PROTECTION (3.18) VICINIT IAP SCALE: "=1000' i 824' Ij1 \ ROUGH, UNADJUSTED CUT/FILL ESTIMATES CUT- 22,000 YD3 FILL- 21,600 YD3 NET- 400 YD3 CUT EXTRA NOTES: sR SURFACE ROUGHENING (3.29) 1. THE OWNER AND CONTRACTOR MAY NEED TO MAKE MODIFICATIONS TO THE PLANS TO MATCH FIELD CONDITIONS. THE To TOPSOILING (3.30) CONTRACTOR SHALL VERIFY THAT EXISTING TOPO LINES ON PLANS GENERALLY DISPLAY FIELD CONDITIONS. IF A SIGNIFICANT DISCREPANCY IS FOUND, CONTRACTOR SHALL NOTIFY ENGINEER. >s O TEMPORARY SEEDING 3 31 ( ) Ps PERMANENT SEEDING (3.32) 2. TOPO INFORMATION WAS OBTAINED FROM BLACKWELL ENGINEERING. uu MULCHING (3.35) 3. PROPERTY LINE OBTAINED FROM COUNTY GIS. TO BE USED AS A GENERAL REFERENCE ONLY. e/w SOIL STABILIZATION BLANKETS AND MATTING (3.36) 4. EROSION SEDIMENT CONTROL MEASURES TO BE INSTALLED FIRST, GRADING OF BUILDING PAD TO PROCEED ONCE DISTURBED AREA MEASURES ARE IN PLACE AND STABILIZED WITH SEED/MULCH. ROAD TO BE GRAVELED, AND OPEN AREAS TO BE SEEDED ONCE GRADING ALLOWS. ESC MEASURES TO BE REMOVED AND SEEDED ONCE COUNTY ADMINISTRATOR ALLOWS. NUMBERS IN PARENTHESES REFER TO VESCH MEASURES 5. SLOPES GREATER THAN 3:1 ARE TO BE TREATED AS CRITICAL AREAS. NOTE: FOR THE PURPOSES OF PLAN REVIEW AND APPROVAL, NATHAN H. KNOPP, P.E. IS THE CERTIFIED RESPONSIBLE LAND DISTURBER (CRLD). CONTRACTOR SHALL PROVIDE REPLACEMENT CERTIFICATE AT TIME OF CONSTRUCTION TO THE COUNTY E&SC ADMINISTRATOR. NOTE: CONTRACTOR TO PROVIDE A CERTIFIED RESPONSIBLE LAND DISTURBER UPON PERMIT REQUEST FROM COUNTY E&SC ADMINISTRATOR. CRLD FOR THIS PROJECT IS: NAME CERT.# SEDIME4T-'BASIN TO BE CONVERTED TO DRY POND AT- \ \ THE'END OF CONSTRUCTION.SEE AE:FAIL-OFT SHEET 3. \ \ \ \ \ 'W6------- `THICKNESS=_]4-''-��---' \ ' GR+ \ \ \ �0.0 - - la►�+.�ulv.�, _�i:mro�nmmTr•>m 111111111112111111111 NOTE: THE ENTIRE STORMWATER PLAN WILL BE RE-EVALUATED AND NEW CONTROL AND TREATMENT MEASURES IMPLEMENTED AS NEEDED FOR ANY CHANGE TO OPEN SPACE/ MANAGED TURF/ IMPERVIOUS COVER. OWNER RECOGNITION: NAME DATE: IMIURNLZ:A=14 J>=14 nV 1 1 I A9 Piz\ `---_ \\ 9s 01 9 00 I , 49B L E' I\ Ddp PN \ \ r PV\01.1 67 pV \\ 15" HOPE INLET OR EQUIV. , \ ' TOP=500.3 103 LF OF 15" X 704 178' LF OF 15" \ \ \ 15" INVERT=495.6NHDPE PIPE ® 1.4% 50� RY HOUS71L� HOPE PIPE ® 1.1% 15" HOPE INLET OR EQUIV. \ pV 0j''Z R / \ TOP=500.3 / 7 PV 15" INVERT=495.5 E=502f 15" INVERT-496.0 PV \ / ' O 15" INVERT=495.9 01 \ \ \ %O o1.s\ 5 HT -15 019\ 7 o'ca t\ �v pV +P pV \\ 9 \\\ \ 1.7 pVi ��- _ -501 - _ _$1r(r - \ \ _1 - �\023.0'- / pv 01.1 A-P 01 4 CRS .2 pV+ E37 LF OF 15 - - .2 pV+ \ 37 LF OF 15" \ .2 pV+ \ - - - - - `� HDPE PIP@-11 47 / \ \ \ HOPE PIPE 0 1.1 % \ - �� \ .> p - 501 ° 01.6 01.0 1 I O�9 pV 23.0' - - - - - i 6 PV - \OTr 01.9 I o1 j \ PROPOSED 1 \ pV 63 X 704 15" HOPE INLET OR EQUIV. _ o \ 15" HOPE INLET OR EQUIV. 90.5 LF OF 15" TOP=500.3 O rn N 75.0' TOP=500.3 HDPE PIPE ® 1.27 POULTRY HOUSE 90 LF OF 15" +P 15" INVERT=496.1 HOPE PIPE ® 1.1% 15" INVERT=496.4 7 I ' - FFE=502f 15" INVERT=496.3 P\ 01• _ \ 0. G P`1 01.1 15" INVERT=496.0 _ - \ \ - HEIGHT -15 01.9 pv DEMPOKE O BE REMOVED - AT 9 500 \ _ 07 �� / \ - 9 ® O1, D OF PROJECT - - -- \- - - ----- M - TEMPORARY DITCH TO E - - - - - EMOVED AT THE END \�\------------------ / �� __CRS - OF PECi� laws,,, _ _ / / \ \ \ \ j\ TO LITTER , \50 S02 ----' '-_\ \ F :FFE=504 EXISTING _ BUILDING APPROX 50'X36' \ _moo------ __,- L-----I GRAHIfiC SCALE SCALE: 1"=50' Date- 3/21 /21 EScale. 1 "=50' Designed by: NHK Drawn by. BWK Checked by: NHK a O E aE v p N XX 00 C N LL J +-, N v7 C a a In lu a'i a N a ^ y tla r y L N Y j m u •� uta o m m O C - imW a 'D ° `ms E W Inxalu Revision Dates Q J LLI LIJ O C N z � O C7 J J � = N Z _J )- W J Q � 00 Q L O V O_ULLIJ 0 )- 5 J W 0 v) m H X 0) O U 0 rM r� Lr) Drawing No. 1 of 3 Sheets =No.888 Albemarle County Virginia Engineering Manual For Troxell Poultry Hosue April 21, 2021 �ENLrx of y! o��o icy NATHAN HUNTER KNOPP Lic. No.0402060274 4 ; t ss7ONAL 15% 1 � BIaCkwell Engineering, Pic 566 East Market St. - Harrisonburg, Virginia 22801 - (540) 432-9555 - w .BlackwellEnglnearing.com BE # 2888 Table of Contents Description Page ESC Narrative 1 Soils Map 7 TC Calcs 17 Flow Calcs 25 Ditch Cross sections 29 LD-229 & 347 33 Hydroflow caics 35 1 Year Storm Event 35 2 Year Storm Event 40 10 Year Storm Event 53 25 Year Storm Event (For Sediment Basin) 65 100 Year Storm Event 67 VRRM 71 BE 2888 - Troxell Poultry Hosue — ESC Plan Erosion and Sediment Control Narrative Project Description The purpose of this project is the construction of two 63'x704' poultry houses and a litter storage shed on an existing 399.71 acre farm. The site is located off of Dyers Mill Ln, approximately 3 miles Northwest of Scottsville. A total of 7.65 acres will be disturbed during construction. Existing Site Conditions The location of the proposed buildings is an existing cropfield. There is a farm road and barn nearby. The site slopes to the west with the steepest grades at about 9 percent and around 500 feet long. Adjacent Property The site is bounded by woods and farm land on all sides. Offsite Area No site material will need to be exported from the site. If any material needs to be imported to the site, it shall come from a permitted borrow site. In the case that any offsite areas are to be used, the County will be notified and all permit requirements will be met. Soils The soil erodability K factor is .32-.37. See attached soil map for more information. Critical Erosion Areas There are 3:1 slopes on site that should be treated as critical erosion areas. Erosion and Sediment Control Measures Unless otherwise indicated, all vegetative and structural erosion and sediment control practices shall be constructed and maintained according to the minimum standards and specifications of the Virginia Erosion and Sediment Control Regulations, latest edition. The minimum Blackwell Engineering, PLC 566 East Market St Harrisonburg VA 22801 BE 2888 - Troxell Poultry Hosue — ESC Plan standards of the handbook shall be adhered to unless otherwise waived or approved by a variance. Structural Practices 1. Construction Road Stabilization — 3.03 The temporary stabilization of access roads, subdivision roads, parking areas, and other on -site vehicle transportation routes shall be implemented with stone immediately after grading. 2. Silt Fence — 3.05 A temporary sediment barrier constructed of posts, filter fabric and, in some cases, a wire support fence, placed across or at the toe of a slope or in a minor drainage way to intercept and detain sediment and decrease flow velocities from drainage areas of limited size; applicable where sheet and rill erosion or small concentrated flows may be a problem. Contractor to install silt fence where deemed necessary to avoid sediment runoff. 3. Storm Drain Inlet Protection — 3.07 A sediment filter shall be installed at all curb and drop inlets to storm drains that have become functional to prevent sediment from entering and accumulating in and being transferred by the culvert and associated drainage system prior to permanent stabilization of a disturbed project area. 4. Culvert Inlet Protection — 3.08 A sediment filter shall be constructed on the upstream end of storm drain pipes to reduce sediment laden runoff from entering the pipe. 5. Temporary Diversion Dike — 3.09 A channel and berm shall be installed where shown on the plans to channel runoff to temporary sediment trap or basin. 6. Temporary Sediment Basin — 3.14 A temporary barrier or dam with a controlled storm water release structure formed by constructing an embankment of compacted soil across a drainageway shall be constructed as shown on the plans. 7. Outlet Protection — 3.18 Riprap shall be placed at the outlets of all pipes and storm water structures. 8. Surface Roughening 3.29 Providing a rough soil surface with horizontal depressions created by operating a tillage or other suitable implement on the contour, or by leaving slopes in a roughened condition Blackwell Engineering, PLC 566 East Market St Harrisonburg VA 22801 BE 2888 - Troxell Poultry Hosue — ESC Plan by not fine -grading them. 9. Topsoiling — 3.30 Topsoil shall be applied to rough graded areas and fine graded to achieve finished grade before permanent seeding is applied. 10. Temporary Seeding— 3.31 Temporary seeding shall be applied to disturbed areas that will not be brought to final grade for a period of more than 14 days. 11. Permanent Seeding— 3.32 Permanent seeding shall be applied to denuded areas within seven days after final grade is reached on any portion of the site. 12. Mulching 3.35 Mulch shall be applied to denuded surfaces at finished grade not otherwise stabilized with vegetative ground cover. 13. Soil Stabilization Blankets and Matting— 3.36 Soil stabilization matting shall be installed on a prepared planting area where shown on the plan. Other practices shall be provided if determined by the Engineer or County E&SC Administrator. Vegetative Practices 1. Top soiling (stockpile) Topsoil shall be reused and uniformly distributed to a minimum compacted depth of 2 inches on 3:1 or steeper slopes and 4 inches on flatter slopes prior to seeding. Any irregularities in the surface, resulting from topsoiling, shall be corrected in order to prevent the formation of depressions. 2. Erosion Control Blankets or Mulch and Seeding Erosion control blankets (VDOT Standard EC-2), if needed, shall be installed over fill slopes greater than 2.5:1 which have been brought to final grade and have been seeded to protect the slopes from rill and gully erosion and to allow seed to germinate properly. Mulch (straw or fiber) shall be used on relatively flat areas and shall be applied as a second step in the seeding operation. 3. Temporary and Permanent Seeding Blackwell Engineering, PLC E3 566 East Market St Harrisonburg VA 22801 BE 2888 - Troxell Poultry Hosue — ESC Plan Temporary and permanent seeding shall be installed (appropriate to the time of year) according to Seeding and Mulching Table detail on the plan. 4. Surface Roughening Where possible, provide a rough soil surface with horizontal depressions created by operating a tillage or other suitable implement on the contour, or by leaving slopes in a roughened condition by not fine -grading them. Management Strategies 1. Perimeter sediment trapping measures to be installed prior to any excavation on site. 2. Construction shall be conducted so that existing cover will not be disturbed anymore than necessary. 3. Construction shall be sequenced so that grading operations can begin and end as quickly as possible. 4. Permanent seeding and other stabilization shall follow immediately after grading. 5. Areas that will be disturbed shall be clearly marked by flags, signs, etc. 6. The job superintendent shall be responsible for the installation and maintenance of all erosion and sediment control practices. 7. After achieving adequate stabilization to the satisfaction of the E&SC Administrator, the temporary E&S controls shall be removed. Permanent Stabilization All areas disturbed by construction and not otherwise stabilized, shall be stabilized with permanent seeding within 7 days following finish grading. Seeding shall be done according to standard & specification 3.32, PERMANENT SEEDING, of the handbook. Seeding shall be applied depending on time of the year according to E&SC handbook specifications. In all seeding operations, seed, fertilizer, and lime shall be applied prior to mulching. Erosion control blankets shall be installed over fill slopes which have been brought to final grade and have been seeded to protect the slopes from rill and gully erosion and to allow seed to germinate properly. Mulch (straw or fiber) shall be used on relatively flat areas. Blackwell Engineering, PLC 566 East Market St Harrisonburg VA 22801 4 BE 2888 - Troxell Poultry Hosue — ESC Plan Stormwater Management/Water Quality Post development water from the site collects in a dry pond on site. From the pond, the water flows across the property to a tributary of Totier Creek. Totier Creek drains into Middle James- Buffalo (HUC 20802031103.00) where no known pollutants are at significant levels. Water quality is satisfied by open space as shown on the VRRM spreadsheet. At the point where water leaves the site, it meets energy balancve as per 9VAC25-870-66.B3. At the the point where the two streams converge (Point A), the pre and post developed conditions have identical TC's but the developed site has a lower peak flow for both the 2 and 10 year storm events, meeting 9VAC25-870-66.2B. Maintenance In general, all erosion and sediment control measures shall be checked daily and after each significant rainfall. The following items shall be checked in particular: 1. Construction road stabilization may require periodic top dressing with additional stone or the washing and reworking of existing stone shall be required when the stone is covered or has been pushed into the soil and shall be returned to its original minimum depth of 6". 2. Silt fences shall be inspected immediately after each rainfall and at least daily during prolonged rainfall. Any required repairs shall be made immediately. Close attention shall be paid to the repair of damaged silt fence resulting from end runs and undercutting. Should the fabric on a silt fence decompose or become ineffective prior to the end of the expected usable life and the barrier still be necessary, the fabric shall be replaced promptly. Sediment deposits should be removed after each storm event. They must be removed when deposits reach approximately one-half the height of the barrier. Any sediment deposits remaining in place after the silt fence is no longer required shall be dressed to conform with the existing grade, prepared and seeded. 3. The Storm Drain Inlet Protection structures shall be inspected after each rain and repairs made as needed. Sediment shall be removed and the trap restored to its original dimensions when the sediment has accumulated to one half the design depth of the trap. Removed sediment shall be deposited in a suitable area and in such a manner that it will not erode. Structures shall be removed and the area stabilized when the remaining drainage area has been properly stabilized. Blackwell Engineering, PLC 566 East Market St Harrisonburg VA 22801 BE 2888 - Troxell Poultry Hosue — ESC Plan 4. The culvert inlet protection shall be checked to make sure inlet protection is in place, clean and structurally sound. Allowance for water storage needs shall be checked for sedimentation after each stone and to be cleaned out as needed. 5. The diversion dike shall be inspected and repaired after every rain storm event, flow channel, outlet or sediment trapping facility, as necessary. Once every two weeks, whether a storm event has occurred or not, the measure shall be inspected and repairs made if needed. Damages caused by construction traffic or other activity must be repaired before the end of each working day. 6. The sediment basin embankment shall be checked to ensure that it is structurally sound and has not been damaged by erosion or construction equipment. The emergency spillway should be checked regularly to ensure that its lining is well established and erosion -resistant. The basin should be checked after each runoff -producing rainfall for sediment cleanout. When the sediment reaches the clean -out level, it shall be removed and properly disposed of. Outlet protection once placed shall be checked for sediment deposit and excessive sediment removed. 8. The seeded area shall be checked regularly to ensure that a good stand is maintained. Areas shall be fertilized and reseeded as needed. Blackwell Engineering, PLC 566 East Market St Harrisonburg VA 22801 3 5P 21'N 3A 4g N 3 Soil Map —Albemarle County, Virginia 3 � IR PI 3P SP n•N a 7iM 7UMO 7U700 7iM 715100 71MM 71MD 716 716 7161W 3 o 3 u Map Sole: 1:8,99D'f priAed on A larx�pe (11" x 6.5") sreet Metes pi K N 0 100 200 400 000 A0 400 ero ,wo z4ro Nap projection: NNb Mermlor Corrvr000rdinab�: WGS84 Edgetim: UIM Zone 17N WG584 LISDA Natural Resources Web Soil Survey 4/1/2027 Conservation Service National Cooperative Soil Survey Page 1 of 4 MAP LEGEND Area of Interest (AOI) 0 Area of Interest(AOI) Soils 0 Soil Map Unit Polygons ,row Soil Map Unit Lines Soil Map Unit Points Special Point Features wo Blowout ® Borrow Pit Clay Spot O Closed Depression Gravel Pit Gravelly Spot ® Landfill k Lava Flow Marshorswamp �r Mine or Quarry O Miscellaneous Water O Perennial Water y Rock Outcrop + Saline Spot Sandy Spot 40 Severely Eroded Spot C Sinkhole Slide or Slip Sodic Spot Soil Map —Albemarle County, Virginia Spoil Area Q Stony Spot Very Stony Spot Wet Spot Other •� Special Line Features Water Features Streams and Canals Transportation +}r Rails N Interstate Highways N US Routes Major Roads Local Roads Background . Aerial Photography MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:15,800. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Albemarle County, Virginia Survey Area Data: Version 14, Jun 3, 2020 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Oct 14, 2019--0d 15, 2019 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. USDA Natural Resources Web Soil Survey 4/12028 Conservation Service National Cooperative Soil Survey Page 2 of Soil Map -Albemarle County.. Virginia Map Unit Legend Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 18B Lackstom loam, 2 to 7 percent 4.4 1.5% slopes 24B Banister silt loam, 2 to 7 7.4 2.4% percent slopes 32C Orenda silt loam, 7 to 15 4.9 1.6% percent slopes 43D Minesville channery silt loam, 4.4 1.4% 15 to 25 percent slopes 46B Grassland silt loam, 2 to 7 15.6 5.1 % percent slopes 51B Bugley channery silt loam, 2 to 6.4 2.1% 7 percent slopes 51C Bugley channery silt loam, 7 to 22.4 7.4% 15 percent slopes 51D Bugley channery silt loam, 15 11.7 3.8% to 25 percent slopes 51E Bugley channery silt loam, 25 0.0 0.0% to 45 percent slopes 62B Buffstat silt loam, 2 to 7 1.0 0.3% percent slopes 62C Buffstat silt loam, 7 to 15 7.9 2.6% percent slopes 68B Penn silt loam, 2 to 7 percent 6.5 2.1 % slopes 68C Penn silt loam, 7 to 15 percent 36.6 12.1 % slopes 72B3 Rabun Gay, 2 to 7 percent 16.4 5.4% slopes, severely eroded 74B Rapidan sill loam, 2 to 7 26.7 8.8% percent slopes 74C Rapidan sill loam, 7 to 15 22.6 7.5% percent slopes 74D Rapidan sill loam, 15 to 25 3.9 1.3% percent slopes 75C3 Rapidan silly clay loam, 7 to 15 20.7 6.8% percent slopes, severely eroded 75133 Rapidan silly clay loam, 15 to 28.8 9.5% 25 percent slopes, severely eroded 77 Dan River-Codorus complex, 0 24.4 8.0% to 2 percent slopes, occasionally flooded Natural Resources Web Soil Survey 4/1/2021 Conservation Service National Cooperative Soil Survey Page 3 of 4 Soil Map —Albemarle County, Virginia Map Unit Symbol Map Unit Name Acres in AOI Percent Of AOI 78 Rowland silt loam, 0 to 2 2.2 0.7% percent slopes, occassionaly flooded 79B Meadowville silt loam, 2 to 7 2.6 0.9% percent slopes 80B Littlejoe silt loam, 2 to 7 5.3 1.7% percent slopes 80C Littlejoe silt loam, 7 to 15 4.1 1.4% percent slopes 84B Totier silt loam, 2 to 7 percent 8.3 2.7% slopes 84C Totier silt loam, 7 to 15 percent 8.3 2.7% slopes Totals for Area of Interest 303.3 100.0% PaNatural Resources Web Soil Survey 4/12021 Conservation Service National Cooperative Soil Survey Page 4 of 4 10 3 5P 21'N 3A 4g N 3 K Factor, Whole Soil —Albemarle County, Virginia 3 � IR PI 3P SP n•N a I 8 7iM 7UMO 7U700 7iM 715100 71MM 71MM 715M 716 7161W 3 o 3 u Map Sole: 1:8,99D'f priAed on A larx�pe (11" x 6.5") shad Metes pi K N 0 100 200 400 000 A0 400 ero ,wo z4ro Nap projection: NNb Mermlor Corrvr000rdinab�: WGS84 Edgetim: U1M Zone 17N WG584 LISDA Natural Resources Web Soil Survey 4/1/2021 Conservation Service National Cooperative Soil Survey Page 1 of 4 Area of Interest (A01) 0 Area of Interest(A01) Solis Soil Rating Polygons . .02 . .05 . .10 0 .15 0 .17 0 .20 0 24 0 28 0 .32 0 .37 Q .43 Q .49 . .55 - .64 0 Not rated or not available Soil Rating Lines ry .02 ~ .05 K Factor, Whole Soil —Albemarle County, Virginia MAPLEGEND . 0 .24 Streams and Canals 0 .28 Transportation 0 32 Mr-r Rails 37 .+/ Interstate Highways 43 US Routes N 49 Major Roads ~ .55 ~ .64 . . Not rated or not available Soil Rating Points 02 Q 05 p 10 13 15 El 17 p 20 24 28 11 32 13 37 0 .43 0 .49 55 64 Not rated or not available Water Features Local Roads MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:15,800. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Background Please rely on the bar scale on each map sheet for map . Aerial Photography measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Albemarle County, Virginia Survey Area Data: Version 14, Jun 3, 2020 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Oct 14, 2019--Oct 15, 2019 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. USDA Natural Resources Web Soil Survey 4/12022 Conservation Service National Cooperative Soil Survey Page 2 of K Factor, Whole Soil -Albemarle County, Virginia K Factor, Whole Soil Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 18B Lackstown loam, 2 to 7 .37 4.4 1.5% percent slopes 24B Banister silt loam, 2 to 7 .49 7.4 2.4% percent slopes 32C Orenda silt loam, 7 to 15 .37 4.9 1.6% percent slopes 43D Minesville channery silt .28 4.4 1.4% loam, 15 to 25 percent slopes 46B Grassland silt loam, 2 to .49 15.6 5.1 % 7 percent slopes 51B Bugley channery silt .20 6.4 2.1% loam, 2 to 7 percent slopes 51C Bugley channery silt .20 22.4 7.4% loam, 7 to 15 percent slopes 51D Bugley channery silt .20 11.7 3.8% loam, 15 to 25 percent slopes 51E Bugley channery silt .20 0.0 0.0% loam, 25 to 45 percent slopes 62B Buffstat silt loam, 2 to 7 .37 1.0 0.3% percent slopes 62C Buffstat silt loam, 7 to 15 .37 7.9 2.6% percent slopes 68B Penn silt loam, 2 to 7 .37 6.5 2.1 % percent slopes 68C Penn silt loam, 7 to 15 .37 36.6 12.1 % percent slopes 72B3 Rabun clay, 2 to 7 .20 16.4 5.4% percent slopes, severely eroded 74B Rapidan silt loam, 2 to 7 .37 26.7 8.8% percent slopes 74C Rapidan silt loam, 7 to .37 22.6 7.5% 15 percent slopes 74D Rapidan silt loam, 15 to .37 3.9 1.3% 25 percent slopes 75C3 Rapidan silty clay loam, .37 20.7 6.8% 7 to 15 percent slopes, severely eroded Natural Resources Web Soil Survey 4/12021 Conservation Service National Cooperative Soil Survey Page 3 of 4 13 K Factor, whole Soil —Albemarle County, Virginia Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 75133 Rapidan silty clay loam, .37 28.8 9.5% 15 to 25 percent slopes, severely eroded 77 Dan River-Codorus .32 24.4 8.0% complex, 0 to 2 percent slopes, occasionally flooded 78 Rowland silt loam, 0 to 2 .37 2.2 0.7% percent slopes, occassionally flooded 79B Meadowville silt loam, 2 .37 2.6 0.9% to 7 percent slopes 80B Litflejoe sill loam, 2 to 7 .37 5.3 1.7% percent slopes 80C Litflejoe sill loam, 7 to .37 4.1 1.4% 15 percent slopes 84B Toter silt loam, 2 to 7 .32 8.3 2.7% percent slopes 84C Toter silt loam, 7 to 15 .32 8.3 2.7% percent slopes Totals for Area of Interest 303.3 100.0% Description Erosion factor K indicates the susceptibility of a soil to sheet and rill erosion by water. Factor K is one of six factors used in the Universal Soil Loss Equation (USLE) and the Revised Universal Soil Loss Equation (RUSLE) to predict the average annual rate of soil loss by sheet and rill erosion in tons per acre per year. The estimates are based primarily on percentage of silt, sand, and organic matter and on soil structure and saturated hydraulic conductivity (Ksat). Values of K range from 0.02 to 0.69. Other factors being equal, the higher the value, the more susceptible the soil is to sheet and rill erosion by water. "Erosion factor Kw (whole soil)" indicates the erodibility of the whole soil. The estimates are modified by the presence of rock fragments. Factor K does not apply to organic horizons and is not reported for those layers. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff.- None Specified Tie -break Rule: Higher Layer Options (Horizon Aggregation Method): Surface Layer (Nat applicable) Natural Resources Web Soil Survey 4/1/2021 conservation Service National Cooperative Soil Survey Page 4 of 4 14 3 5P 21'N 3A 4g N 3 Hydrologic Soil Group —Albemarle County, Virginia 3 � IR PI 3P SP n•N a I 8 7iM 7UMO 7U700 7iM 715100 71MM 71MM 715M 716 7161W 3 o 3 u Map Sole: 1:8,99D'f priAed on A larx�pe (11" x 6.5") shad Metes pi K N 0 100 200 400 000 A0 400 ero ,wo z4ro Nap projection: NNb Mermlor Cor omrdinab�: WGS84 Edgetim: UIM Zone 17N WG584 LISDA Natural Resources Web Soil Survey 4/1/2025 Conservation Service National Cooperative Soil Survey Page 1 of 5 MAPLEGEND Area of Interest (A01) 0 Area of Interest AOI) Solis Soil Rating Polygons 0 A Q AID o B Q BID o C 0 CID 0 D 0 Not rated or not available Soil Rating Lines . r A ,y AID rV B ram/ B/D N C N CID i D . . Not rated or not available Soil Rating Points A Q AID O B 0 BID Hydrologic Soil Group —Albemarle County, Virginia 0 C CID D 13 Not rated or not available Water Features Streams and Canals Transportation µ� Rails N Interstate Highways �y US Routes Major Roads Local Roads Background . Aerial Photography MAP INFORMATION The soil surveys that comprise your AOI were mapped at 1:15,800. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: Web Mercator (EPSG:3857) Maps from the Web Soil Survey are based on the Web Mercator projection, which preserves direction and shape but distorts distance and area. A projection that preserves area, such as the Albers equal-area conic projection, should be used if more accurate calculations of distance or area are required. This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Albemarle County, Virginia Survey Area Data: Version 14, Jun 3, 2020 Soil map units are labeled (as space allows) for map scales 1:50,000 or larger. Date(s) aerial images were photographed: Oct 14, 201 "ct 15, 2019 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident. USDA Natural Resources Web Soil Survey 4/12026 Conservation Service National Cooperative Soil Survey Page 2 of 5 Hydrologic Soil Group -Albemarle County, Virginia Hydrologic Soil Group Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 18B Lackstown loam, 2 to 7 D 4.4 1.5% percent slopes 24B Banister silt loam, 2 to 7 C 7.4 2.4% percent slopes 32C Orenda silt loam, 7 to 15 C 4.9 1.6% percent slopes 43D Minesville channery silt D 4.4 1.4% loam, 15 to 25 percent slopes 46B Grassland silt loam, 2 to D 15.6 5.1 % 7 percent slopes 51B Bugley channery silt D 6.4 2.1% loam, 2 to 7 percent slopes 51C Bugley channery silt D 22.4 7.4% loam, 7 to 15 percent slopes 51D Bugley channery silt D 11.7 3.8% loam, 15 to 25 percent slopes 51E Bugley channery silt D 0.0 0.0% loam, 25 to 45 percent slopes 62B Buffstat silt loam, 2 to 7 B 1.0 0.3% percent slopes 62C Buffstat silt loam, 7 to 15 B 7.9 2.6% percent slopes 68B Penn silt loam, 2 to 7 B 6.5 2.1 % percent slopes 68C Penn silt loam, 7 to 15 B 36.6 12.1 % percent slopes 72B3 Rabun clay, 2 to 7 B 16.4 5.4% percent slopes, severely eroded 74B Rapidan silt loam, 2 to 7 B 26.7 8.8% percent slopes 74C Rapidan silt loam, 7 to B 22.6 7.5% 15 percent slopes 74D Rapidan silt loam, 15 to B 3.9 1.3% 25 percent slopes 75C3 Rapidan silty clay loam, B 20.7 6.8% 7 to 15 percent slopes, severely eroded Natural Resources Web Soil Survey 4/1/2021 Conservation Service National Cooperative Soil Survey Page 3 of 5 17 Hydrologic Soil Group —Albemarle County, Virginia Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 75133 Rapidan silty clay loam, B 28.8 9.5% 15 to 25 percent slopes, severely eroded 77 Dan River-Codorus B 24.4 8.0% complex, 0 to 2 percent slopes, occasionally flooded 78 Rowland silt loam, 0 to 2 C 2.2 0.7% percent slopes, occassionally flooded 79B Meadowville silt loam, 2 B 2.6 0.9% to 7 percent slopes 80B Litflejoe sill loam, 2 to 7 B 5.3 1.7% percent slopes 80C Litflejoe sill loam, 7 to B 4.1 1.4% 15 percent slopes 84B Toter silt loam, 2 to 7 B 8.3 2.7% percent slopes 84C Toter silt loam, 7 to 15 B 8.3 2.7% percent slopes Totals for Area of Interest 303.3 100.0% PaNatural Resources Web Soil Survey 4/12021 Conservation Service National Cooperative Soil Survey Page 4 of 5 18 Hydrologic Soil Group —Albemarle County, Virginia Description Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from long -duration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink -swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. Rating Options Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie -break Rule: Higher Natural Resources Web Soil Survey 4/12021 Conservation Service National Cooperative Soil Survey Page 5 of 5 19 File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 Blackwell Engineering PLC 566 East Market Street Harrisonburg, VA22801 (540)432-9555 Storm Water Quantity Energy Equation Compliance 1 Year Storm Event Project Name Troxell Poultry House Project Number 2888 1 Year Storm Event Energy Equation Compliance POND Energy Balance 1 I.F. (Improvement Factor) equals 0.8 for sites > 1 acre or 0.9 for sites <_ 1 acre. Is site larger than 1 acre? Yes 4 0.8 QDeveloed = The peak flow rate of runoff from the developed site. QD= 4.68 CFS RVDeveloped = The volume of runoff from the site in the developed condition. RVp 33,080 cu ft QPre-Developed = The peak flow rate of runoff from the site in the pre -developed condition. QP= 9.72 CFS RVPne-Developed = The volume of runoff from the site in pre -developed condition. RVp= 22,254 cu ft QD.loped :5 I.F -*(QPre-devebped* RVPre-Developed)IRVDeveloped 4.68 <_ 5.23 Qdeveloped < or = QPre-Developed YES Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 20 File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 1.) Area = TC Calculations - Rational Method Existing to Pond 0.00 ac 3.) Time of Concentration Project Name: Troxell Poultry House Project # : 2888 IDF: Albemarle (Zone 2) a. Overland: (200' max) L = 100 ft. Height = 4.5 ft. VDOT Drainage Manual Appendix 6D-1: T� = 8.0 min. b. Shallow: (1000' max) L = 0 ft. Height = Average velocity = VDOT Drainage Manual Appendix 6D-6: T, _ L = 310 ft. Height = Average velocity = VDOT Drainage Manual Appendix 6D-6: T, _ T, = U60V Subtotal TC _ 0 ft. 0.0 fps (paved) 0.0 min. 18 ft. 3.9 fps(unpaved) 1.3 min. 1.3 min. c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. L = 0 ft. Height = 0 ft.(unpaved; VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. Subtotal T, = 0.0 min. d. Total T,: T, = 9.3 min. Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 Slope 4.5% 5.8% 21 File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 1.) Area = TC Calculations - Rational Method Proposed to Pond 0.00 ac 3.) Time of Concentration Project Name: Troxell Poultry House Project # : 2888 IDF: Albemarle (Zone 2) a. Overland: (200' max) L = 100 ft. Height = 6 ft. VDOT Drainage Manual Appendix 6D-1: T� = 7.6 min. b. Shallow: (1000' max) L = 0 ft. Height = 0 ft. Average velocity = 0.0 fps (paved) VDOT Drainage Manual Appendix 6D-6: T, = 0.0 min. L = 176 ft. Height = 19 ft. Average velocity = 5.3 fps (unpaved) VDOT Drainage Manual Appendix 6D-6: T, = 0.6 min. T, = U60V Subtotal T. = 0.6 min. Slope 6.0% 10.8% c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: T, = 0.0 min. L = 281 ft. Height = 2.7 ft.(unpaved; 1.0% VDOT Drainage Manual Appendix 6D-5: T� = 3.8 min. Subtotal T, = 3.8 min. d. Total T,: TC = 11.9 min. Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 P% File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 1.) Area = TC Calculations - Rational Method Existing Eastern Stream Contribution to Point A 0.00 ac 3.) Time of Concentration Project Name: Troxell Poultry House Project # : 2888 IDF: #REF! a. Overland: (200' max) L = 100 ft. Height = 5 ft. VDOT Drainage Manual Appendix 6D-1: T� = 7.9 min. Slope 5.0% b. Shallow: (1000' max) L = 0 ft. Height = 0 ft. Average velocity = 0.0 fps (paved) VDOT Drainage Manual Appendix 6D-6: T, = 0.0 min. L = 1000 ft. Height = 110 ft. 11.0% Average velocity = 5.4 fps (unpaved) VDOT Drainage Manual Appendix 6D-6: T, = 3.1 min. T, = U60V Subtotal TC = 3.1 min. c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. L = 1662 ft. Height = 60 ft.(unpaved; 3.6% VDOT Drainage Manual Appendix 6D-5: Tc = 8.7 min. Subtotal T, = 8.7 min. d. Total T,: T, = 19.7 min. Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 23 File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 1.) Area = TC Calculations - Rational Method Drainage to Western Stream 0.00 ac 3.) Time of Concentration Project Name: Troxell Poultry House Project # : 2888 IDF: Albemarle (Zone 2) a. Overland: (200' max) L = 100 ft. Height = 5 ft. VDOT Drainage Manual Appendix 6D-1: T� = 7.9 min. b. Shallow: (1000' max) L = 0 ft. Height = Average velocity = VDOT Drainage Manual Appendix 6D-6: T, _ L = 1000 ft. Height = Average velocity = VDOT Drainage Manual Appendix 6D-6: T, _ T, = U60V Subtotal TC _ 0 ft. 0.0 fps (paved) 0.0 min. 40 ft. 3.2 fps(unpaved) 5.2 min. 5.2 min. Slope 5.0% 4.0% c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. L = 2616 ft. Height = 50 ft.(unpaved; 1.9% VDOT Drainage Manual Appendix 6D-5: Tc = 15.6 min. Subtotal TC = 15.6 min. d. Total T,: TC = 28.6 min. Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 24 File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 1.) Area = Runoff Calculations - Rational Method DI #1-4 0.50 ac 2.) C = 0.71 3.) Time of Concentration Project Name: Troxell Poultry House Project # : 2888 IDF: Albemarle (Zone 2) 0.17 ac @ 0.35 Grass 0.33 ac @ 0.90 Impervious 0.00 ac @ 0.00 Other a. Overland: (200' max) L = 43 ft. Height = 2 ft. VDOT Drainage Manual Appendix 6D-1: T� = 2.8 min. b. Shallow: (1000' max) L = 0 ft. Height = Average velocity = VDOT Drainage Manual Appendix 6D-6: T, _ L = 0 ft. Height = Average velocity = VDOT Drainage Manual Appendix 6D-6: T, _ T, = U60V Subtotal TC _ 0 ft. 0.0 fps (paved) 0.0 min. 0 ft. 0.0 fps(unpaved) 0.0 min. 0.0 min. Slope 4.7% c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. L = 151 ft. Height = 1.5 ft.(unpaved; 1.0% VDOT Drainage Manual Appendix 6D-5: Tc = 2.4 min. Subtotal T, = 2.4 min. d. Total TC: T, = 5.2 min. 4.) Rainfall Intensities: For TC = 5 min. 12 = 5.04 iph Ito = 6.54 iph 5.) Proposed Flows: Q=ACI Q2 = 1.80 cfs Q,o = 2.33 cfs 125 = 7.48 iph I100 = 8.59 iph Q25 = 2.66 cfs Q100 = 3.06 cfs Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 25 File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 1.) Area = Runoff Calculations - Rational Method Culvert #1 0.85 ac 2.) C = 0.56 3.) Time of Concentration Project Name: Troxell Poultry House Project # : 2888 IDF: Albemarle (Zone 2) 0.52 ac @ 0.35 Grass 0.33 ac @ 0.90 Impervious 0.00 ac @ 0.00 Other a. Overland: (200' max) L = 100 ft. Height = 6 ft. VDOT Drainage Manual Appendix 6D-1: T� = 7.6 min. b. Shallow: (1000' max) L = 0 ft. Height = Average velocity = VDOT Drainage Manual Appendix 6D-6: T, _ L = 0 ft. Height = Average velocity = VDOT Drainage Manual Appendix 6D-6: T, _ T, = U60V Subtotal TC _ 0 ft. 0.0 fps (paved) 0.0 min. 0 ft. 0.0 fps(unpaved) 0.0 min. 0.0 min. Slope 6.0% c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. L = 170 ft. Height = 3.8 ft.(unpaved; 2.2% VDOT Drainage Manual Appendix 6D-5: Tc = 1.9 min. Subtotal T, = 1.9 min. d. Total TC: TC = 9.5 min. 4.) Rainfall Intensities: For TC = 9 min. 12 = 4.19 iph 110 = 5.47 iph 5.) Proposed Flows: Q=ACI Q2 = 2.01 cfs Q,o = 2.62 cfs 125 = 6.28 iph 1100 = 7.23 iph Q25 = 3.01 cfs Q100 = 3.46 cfs Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 26 File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 1.) Area = Runoff Calculations - Rational Method Culvert #2 0.62 ac 2.) C = 0.58 3.) Time of Concentration Project Name: Troxell Poultry House Project # : 2888 IDF: Albemarle (Zone 2) 0.36 ac @ 0.35 Grass 0.26 ac @ 0.90 Impervious 0.00 ac @ 0.00 Other a. Overland: (200' max) L = 47 ft. Height = 3 ft. VDOT Drainage Manual Appendix 6D-1: T� = 5.5 min. b. Shallow: (1000' max) L = 0 ft. Height = Average velocity = VDOT Drainage Manual Appendix 6D-6: T, _ L = 0 ft. Height = Average velocity = VDOT Drainage Manual Appendix 6D-6: T, _ T, = U60V Subtotal TC _ 0 ft. 0.0 fps (paved) 0.0 min. 0 ft. 0.0 fps(unpaved) 0.0 min. 0.0 min. Slope 6.4% c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. L = 151 ft. Height = 4.8 ft.(unpaved; 3.2% VDOT Drainage Manual Appendix 6D-5: Tc = 1.5 min. Subtotal T, = 1.5 min. Total TC: TC = 7.0 min. 4.) Rainfall Intensities: For TC = 7 min. 12 = 4.57 iph 110 = 5.95 iph 5.) Proposed Flows: Q=ACI Q2 = 1.65 cfs Q10 = 2.14 cfs 125 = 6.81 iph 1100 = 7.84 iph Q25 = 2.45 cfs Q100 = 2.82 cfs Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 PrA File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 1.) Area = Runoff Calculations - Rational Method Ditch #1 1.63 ac 2.) C = 0.52 3.) Time of Concentration Project Name: Troxell Poultry House Project # : 2888 IDF: Albemarle (Zone 2) 0.51 ac @ 0.35 Grass 0.37 ac @ 0.90 Impervious 0.75 ac @ 0.45 Agriculture a. Overland: (200' max) L = 100 ft. Height = 6 ft. VDOT Drainage Manual Appendix 6D-1: T� = 7.6 min. b. Shallow: (1000' max) L = 0 ft. Height = 0 ft. Average velocity = 0.0 fps (paved) VDOT Drainage Manual Appendix 6D-6: T, = 0.0 min. L = 176 ft. Height = 19 ft. Average velocity = 5.3 fps (unpaved) VDOT Drainage Manual Appendix 6D-6: T, = 0.6 min. T, = U60V Subtotal TC = 0.6 min. Slope 6.0% 10.8% c. Channel: L = 0 ft. Height = 0 ft.(paved) VDOT Drainage Manual Appendix 6D-5: Tc = 0.0 min. L = 247 ft. Height = 2.7 ft.(unpaved; 1.1% VDOT Drainage Manual Appendix 6D-5: Tc = 3.3 min. Subtotal T, = 3.3 min. d. Total TC: T, = 11.4 min. 4.) Rainfall Intensities: For TC = 11 min. 12 = 3.87 iph 110 = 5.07 iph 5.) Proposed Flows: Q=ACI Q2 = 3.28 cfs Q,o = 4.31 cfs 125 = 5.83 iph 1100 = 6.73 iph Q25 = 4.95 cfs Q100 = 5.71 cfs Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 28 File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 Project Name: Troxell Poultry House Project # : 2888 DI #1-4 -Velocity and Depth Calculations 2 Year 10 Year Discharge (Q) = 1.80 cfs 2.33 cfs Channel Slope (S) = 1.00 % 1.00 % Retardance Level = D (Mowed Grass) D (Mowed Grass) Left side slope = 3 : 1 3 : 1 Right side slope = 3 : 1 3 : 1 Bottom width = 0 ft 0 ft Total Depth = 1.3 ft 1.3 ft 2 Year 10 Year Flow Depth d = 0.94 0.87 Flow Area A = 2.68 sf 2.26 sf Hydraulic radius R = 0.45 ft 0.41 ft V x R = 0.301 0.425 Manning's n = 0.130 0.080 Flowrate = 1.80 cfs 2.33 cfs Manning's Equation Velocity = 0.67 fps 1.03 fps Freeboard = 0.36 ft 0.43 ft DITCH CROSS-SECTION F] L2 14 Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 � Ditch —2Yr ---10 Yr 29 File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 Project Name: Troxell Poultry House Project # : 2888 Culvert #1 - Velocity and Depth Calculations 2 Year Discharge (Q) = 2.01 cfs Channel Slope (S) = 1.00 % Retardance Level = D (Mowed Grass) Left side slope = 3 :1 Right side slope = 3 : 1 Bottom width = 0 ft Total Depth = 1.5 ft 2 Year Flow Depth d = 0.98 Flow Area A = 2.91 sf Hydraulic radius R = 0.47 ft VxR= 0.322 Manning's n = 0.130 Flowrate = 2.01 cfs Manning's Equation Velocity = 0.69 fps Freeboard = 0.52 ft I 1.4 1.2 1 L Y w 8 0. 0.6 0.4 0.2 0 0 DITCH CROSS-SECTION 2 4 6 8 10 Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 10 Year 2.62 cfs 1.00 % D (Mowed Grass) 3:1 3:1 Oft 1.5 ft 10 Year 0.91 2.47 sf 0.43 ft 0.456 0.080 2.62 cfs 1.06 fps 0.59 ft 12 Ditch —2 Yr ---10 Yr 30 File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 Project Name: Troxell Poultry House Project # : 2888 Culvert #2 - Velocity and Depth Calculations 2 Year Discharge (Q) = 1.65 cfs Channel Slope (S) = 1.00 % Retardance Level = D (Mowed Grass) Left side slope = 3 : 1 Right side slope = 3 : 1 Bottom width = 0 ft Total Depth = 1.5 ft 2 Year Flow Depth d = 0.91 Flow Area A = 2.50 sf Hydraulic radius R = 0.43 ft VxR= 0.284 Manning's n = 0.130 Flowrate = 1.64 cfs Manning's Equation Velocity = 0.66 fps Freeboard = 0.59 ft I 1.4 1.2 1 L Y v 0.8 0.6 0.4 0.2 0 0 DITCH CROSS-SECTION 2 4 6 8 10 Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 10 Year 2.14 cfs 1.00 % D (Mowed Grass) 3:1 3:1 Oft 1.5 ft 10 Year 1.01 3.05 sf 0.48 ft 0.335 0.130 2.14 cfs 0.70 fps 0.49 ft 12 Ditch —2Yr ---10 Yr 31 File: 2888-TC 8 FLOW CALCS.xlsm Printed: 4/19/2021 Project Name: Troxell Poultry House Project # : 2888 Ditch #1 - Velocity and Depth Calculations 2 Year Discharge (Q) = 3.28 cfs Channel Slope (S) = 1.00 % Retardance Level = D (Mowed Grass) Left side slope = 3 :1 Right side slope = 10 : 1 Bottom width = 0 ft Total Depth = 1.25 ft 2 Year Flow Depth d = 0.88 ft Flow Area A = 5.02 sf Hydraulic radius R = 0.43 ft VxR= 0.283 Manning's n = 0.130 Flowrate = 3.29 cfs Manning's Equation Velocity = 0.66 fps Freeboard = 0.37 ft 1.4 1.2 1 r 0.8 a 0 0.6 0.4 0.2 0 0 DITCH CROSS-SECTION 5 10 15 Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 10 Year 4.31 cfs 1.00 % D (Mowed Grass) 3:1 10 :1 Oft 1.25 ft 10 Year 0.81 ft 4.27 sf 0.40 ft 0.402 0.080 4.31 cfs 1.01 fps 0.44 ft 4 20 Ditch —2 Yr ---10 Yr 32 File: 2888 LD-229.x1sm Printed: 4/19/2021 STORM SEWER DESIGN COMPUTATIONS LD-229 Troxell Pou try House BE #2888 FROM POINT TO POINT AREA DRAIN ACRES RUNOFF COEF C C A INLET TIME RAIN FALL RUNOFF Q INVERT ELEVATIONS LENGTH SLOPE I DAM CAPA- I CITY VEL FLOW TIME INCRE MENT ACCUM ULATED T, min IN/HR CFS UPPER LOWER FT FT/FT IN CFS FPS SEC 4 3 0.85 0.53 0.45 0.45 9.50 5.26 2.37 497.20 496.20 90.50' 0.0110 15" 6.80 4.83 18.8 3 2 0.50 0.71 0.36 0.81 9.81 5.26 4.24 496.10 495.70 37.00' 0.0108 15" 6.73 5.87 6.3 2 1 0.50 0.71 0.36 1.16 9.92 5.26 6.11 495.60 494.50 96.50' 0.0114 15" 6.91 6.48 14.9 4.1 3.1 0.62 0.58 0.36 0.36 7.00 5.95 2.14 497.20 496.10 90.50' 0.0122 15" 7.13 4.71 19.2 3.1 2.1 0.50 0.71 0.36 0.71 7.32 5.95 4.25 496.00 495.50 37.00' 0.0135 15 7.52 6.44 5.7 2.1 1.1 0.50 0.71 0.36 1.07 7.42 5.95 6.36 495.40 494.00 103.00' 0.0136 15" 7.54 7.01 14.7 Note: Mannin 's "n" ad'usted for pipe type and diameter. Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 33 File: 2888 LD-229.xlsm HYDRAULIC GRADE LINE LD-347 Printed: 4/19/2021 Troxell Poultry House (BE #28881 INLET # Outlet WSE Do Qo Lo Sro % Ht JUNCTION LOSS Final H Inlet WSE Rim Elev. Va Ha QI Vi Q,Vi VZ 2 H, Angle K HD Hit 1.3 Ht 0.5 Hit 2 495.50 15" 6.11 97' 0.90 0.87 6.48 0.16 4.24 5.87 24.88 0.54 0.19 0.00 0.00 0.16 0.21 0.11 0.98 496.48 500.30 3 496.70 15" 4.24 37' 0.44 0.16 5.87 0.13 2.37 4.83 11.44 0.36 0.13 0.35 0.13 0.13 0.17 0.09 0.25 496.95 500.30 4 497.20 15" 2.37 91' 0.14 0.12 4.83 0.09 - - - - 0.00 - 0.00 0.09 0.12 0.06 0.18 497.38 501.00 2.1 495.00 15" 6.36 103' 0.98 1.01 7.01 0.19 4.25 6.44 27.38 0.64 0.23 0.00 0.00 0.19 0.25 0.12 1.14 496.14 500.30 3.1 496.50 15" 4.25 37' 0.44 0.16 6.44 0.16 2.14 4.71 10.08 0.34 0.12 0.52 0.18 0.16 0.21 0.10 0.27 496.77 500.30 4.1 497.10 15" 2.14 91' 0.11 0.10 4.71 0.09 0.00 0.00 0.09 0.11 0.0610.161 497.26 501.00 Mannings "n" = 0.013 90'K=0.70 70'K=0.61 50'K=0.50 30'K=0.35 20'K=0.25 10'K=0.13 80'K=0.66 60'K=0.56 40'K=0.43 25'K=0.30 15'K=0.19 5°K=0.06 Blackwell Engineering, PLC 566 East Market Street Harrisonburg, VA 22801 34 Hydrograph Summary Report Hydraflow Hydrographs Extension for Autodesk®Civil 3DO by Autodesk, Inc. v2020 Hyd. No. Hydrograph type (origin) Peak flow We) Time interval (min) Time to Peak (min) Hyd. volume (cuff) Inflow hyd(s) Maximum elevation (fl) Total strge used (cuft) Hydrograph Description 1 SCS Runoff 9.719 1 720 22,254 Existing Drainage Area to Pond 2 SCS Runoff 13.05 1 721 33,082 Drainage Area to Pond 3 Reservoir 4.683 1 732 33,080 2 492.79 8,099 Pond 5 SCS Runoff 81.65 1 727 298,575 Exisiting Eastern Stream Contribution 6 SCS Runoff 86.23 1 731 370,889 Drainage to Western Stream 7 Combine 162.37 1 729 669,463 5,6 Total Existing to Point A 9 Reach 2.872 1 777 33,045 3 Pond to Point A 10 SCS Runoff 76.97 1 727 281,477 Additional Eastern Stream to Point 11 Combine 78.19 1 727 314,521 9,10 Total Area to Eastern Stream 12 Combine 159.18 1 729 685,411 6,11 Total Proposed to Point A 14 Reservoir 1.252 1 761 33,067 2 494.64 28,429 Sediment Basin Troxell PH Ponds.gpw Return Period: 1 Year Monday, 04 / 19 / 2021 35 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3DO by Autodesk, Inc. v2020 Hyd. No. 1 Existing Drainage Area to Pond Hydrograph type = SCS Runoff Storm frequency = 1 yrs Time interval = 1 min Drainage area = 6.080 ac Basin Slope = 0.0 % Tc method = User Total precip. = 2.99 in Storm duration = 24 hrs ` Composite (Area/CN) = [(0.150 x 98) + (5.730 x 75)116.080 Q (cfs) 10.00 . M 4.00 Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor Existing Drainage Area to Pond Hyd. No. 1 -- 1 Year Monday, 04/19/2021 = 9.719 cfs = 720 min = 22,254 cuft = 76* = 0 ft = 9.30 min = Type II = 484 Q (cfs) 10.00 M 4.00 2.00 0.00 I- ' ' ' 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 1 Time (min) Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3DO by Autodesk, Inc. v2020 Hyd. No. 2 Drainage Area to Pond Hydrograph type = SCS Runoff Storm frequency = 1 yrs Time interval = 1 min Drainage area = 7.090 ac Basin Slope = 0.0 % Tc method = User Total precip. = 2.99 in Storm duration = 24 hrs ` Composite (Area/CN) = [(2.820 x 61) + (3.520 x 98) + (0.750 x 75)] / 7.090 Q (cfs 14.00 12.00 10.00 EW of 4.00 2.00 Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor Drainage Area to Pond Hyd. No. 2 -- 1 Year Monday, 04 / 19 / 2021 = 13.05 cfs = 721 min = 33,082 cuft = 81* = 0 ft = 11.90 min = Type II = 484 Q (cfs) 14.00 12.00 10.00 MA "Oil] 4.00 2.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 2 Time (min) QFA Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 3 Pond Hydrograph type = Reservoir Peak discharge Storm frequency = 1 yrs Time to peak Time interval = 1 min Hyd. volume Inflow hyd. No. = 2 - Drainage Area to Pond Max. Elevation Reservoir name = Pond Max. Storage Storage Indication method used. Q (cfs) 14.00 12.00 10.00 '. t t 4.00 2.00 Pond Hyd. No. 3 -- 1 Year Monday, 04/19/2021 = 4.683 cfs = 732 min = 33,080 cult = 492.79 ft = 8,099 cuft Q (cfs) 14.00 12.00 10.00 l Ill 4.00 2.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 3 — Hyd No. 2 ® Total storage used = 8,099 cuft Time (min) QV Pond Report Hydra0ow Hydrographs Extension for Autodesk® Civil 3138 by Autodesk, Inc. v2020 Monday, 04 / 19 / 2021 Pond No. t - Pond Pond Data Contours -User-defined contour areas. Conic method used for volume calculation. Begining Elevation = 490.00 ft Stage / Storage Table Stage (ft) Elevation (ft) Contour area (sgft) Incr. Storage (tuft) Total storage (tuft) 0.00 490.00 00 0 0 2.00 492.00 3,190 2,126 2,126 4.00 494.00 13,117 15,182 17,309 6.00 496.00 22,111 34,835 52,144 8.00 498.00 31,646 53,468 105,612 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 15.00 12.00 6.00 Inactive Crest Len (ft) = 15.71 20.00 0.00 0.00 Span (in) = 15.00 12.00 6.00 0.00 Crest El. (ft) = 494.70 495.70 0.00 0.00 No. Barrels = 1 1 1 1 Weir Coeff. = 3.33 3.33 3.33 3.33 Invert El. (ft) = 490.00 490.00 493.40 0.00 Weir Type = 1 Ciplti -- --- Length (ft) = 52.00 0.00 0.00 0.00 Multi -Stage = Yes No No No Slope I%) = 2.00 0.00 0.00 n/a N-Value = .013 .013 .013 n/a Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfil.(in/hr) = 0.000 (by Contour) Multi -Stage = n/a Yes Yes Yes TW Elev. (ft) = 0.00 Note: Cul"rt/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (a). Stage (it) Stage / Discharge Elev (ft) 8.00 498.00 6.00 496.00 4.00 494.00 2.00 492.00 0.00 490.00 0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 160.0 180.0 200.0 220.0 240.0 260.0 Total O Discharge (cfs) 39 Hydrograph Summary Report Hydraflow Hydrographs Extension for Autodesk®Civil 3DO by Autodesk, Inc. v2020 Hyd. No. Hydrograph type (origin) Peak flow We) Time interval (min) Time to Peak (min) Hyd. volume (cuff) Inflow hyd(s) Maximum elevation (fl) Total strge used (cuft) Hydrograph Description 1 SCS Runoff 14.15 1 720 32,069 Existing Drainage Area to Pond 2 SCS Runoff 18.12 1 721 45,760 Drainage Area to Pond 3 Reservoir 5.324 1 733 45,758 2 493.41 12,858 Pond 5 SCS Runoff 136.53 1 726 461,397 Exisiting Eastern Stream Contribution 6 SCS Runoff 136.55 1 731 554,913 Drainage to Western Stream 7 Combine 263.58 1 728 1,016,310 5,6 Total Existing to Point A 9 Reach 3.595 1 799 45,721 3 Pond to Point A 10 SCS Runoff 128.71 1 726 434,975 Additional Eastern Stream to Point A 11 Combine 130.18 1 726 480,696 9,10 Total Area to Eastern Stream 12 Combine 257.55 1 728 1,035,609 6,11 Total Proposed to Point A 14 Reservoir 4.939 1 734 45,745 2 494.86 32,370 Sediment Basin Troxell PH Ponds.gpw Return Period: 2 Year Monday, 04 / 19 / 2021 40 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 1 Existing Drainage Area to Pond Hydrograph type = SCS Runoff Storm frequency = 2 yrs Time interval = 1 min Drainage area = 6.080 ac Basin Slope = 0.0 % Tc method = User Total precip. = 3.62 in Storm duration = 24 hrs Composite (Area/CN) = [(0.150 x 98) + (5.730 x 75)] 16.080 Q (Cfs) 15.00 12.00 • 11 . 11 Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor Existing Drainage Area to Pond Hyd. No. 1 -- 2 Year Monday, 04/19/2021 = 14.15 cfs = 720 min = 32,069 cult = 76` = 0 ft = 9.30 min = Type II = 484 Q (cfs) 15.00 12.00 lllll• 11 MITI] 0.00 ' ' - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 1 Time (min) 41 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 2 Drainage Area to Pond Hydrograph type = SCS Runoff Peak discharge Storm frequency = 2 yrs Time to peak Time interval = 1 min Hyd. volume Drainage area = 7.090 ac Curve number Basin Slope = 0.0 % Hydraulic length Tc method = User Time of conc. (Tc) Total precip. = 3.62 in Distribution Storm duration = 24 hrs Shape factor Composite (Area/CN) = [(2.820 x 61) + (3.520 x 98) + (0.750 x 75)] / 7.090 Q (Cfs) 21.00 111 15.00 12.00 am 3.00 Drainage Area to Pond Hyd. No. 2 -- 2 Year Monday, 04/19/2021 = 18.12 cfs = 721 min = 45,760 cult = 81` = 0 ft = 11.90 min = Type II = 484 Q (cfs) 21.00 18.00 15.00 12.00 • Ir M 3.00 0.00 1 1 1-1 1 ' - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 2 Time (min) 42 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 3 Pond Hydrograph type = Reservoir Peak discharge Storm frequency = 2 yrs Time to peak Time interval = 1 min Hyd. volume Inflow hyd. No. = 2 - Drainage Area to Pond Max. Elevation Reservoir name = Pond Max. Storage Storage Indication method used. Q (cfs) 21.00 18.00 15.00 12.00 . m 3.00 Pond Hyd. No. 3 -- 2 Year Monday, 04/19/2021 = 5.324 cfs = 733 min = 45,758 cult = 493.41 ft = 12,858 tuft Q (cfs) 21.00 18.00 15.00 12.00 l l 3.00 0.00 ' — ' 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 3 H No. 2 Time (min) Hyd ®Total storage used = 12,858 cuff 43 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3170 by Autodesk, Inc. v2020 Hyd. No. 5 Exisiting Eastern Stream Contribution to Point A Hydrograph type = SCS Runoff Storm frequency = 2 yrs Time interval = 1 min Drainage area = 123.810 ac Basin Slope = 0.0 % Tc method = User Total precip. = 3.62 in Storm duration = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor ` Composite (Area/CN) = [(56.310 x 75) + (2.990 x 86) + (41.370 x 55) + (22.140 x 77)] / 123.810 Q (Cfs) 140.00 120.00 1 ee 40.00 20.00 Exisiting Eastern Stream Contribution to Point A Hyd. No. 5 -- 2 Year Monday, 04/19/2021 = 136.53 cfs = 726 min = 461,397 cuft = 69` = 0 ft = 19.70 min = Type II = 484 Q (Cfs) 140.00 120.00 100.00 40.00 20.00 0.00 ' 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 5 Time (min) 44 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3170 by Autodesk, Inc. v2020 Hyd. No. 6 Drainage to Western Stream Hydrograph type = SCS Runoff Storm frequency = 2 yrs Time interval = 1 min Drainage area = 128.320 ac Basin Slope = 0.0 % Tc method = User Total precip. = 3.62 in Storm duration = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor ` Composite (Area/CN) = [(14.190 x 75) + (16.170 x 86) + (34.420 x 55) + (63.540 x 77)] 1128.320 Q (cfs) 140.00 120.00 1 ee 40.00 20.00 Drainage to Western Stream Hyd. No. 6 -- 2 Year Monday, 04/19/2021 = 136.55 cfs = 731 min = 554,913 cuft = 72` = 0 ft = 28.60 min = Type II = 484 Q (cfs) 140.00 120.00 100.00 40.00 20.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 6 Time (min) 45 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3170 by Autodesk, Inc. v2020 Monday, 04 / 19 / 2021 Hyd. No. 7 Total Existing to Point A Hydrograph type = Combine Peak discharge = 263.58 cfs Storm frequency = 2 yrs Time to peak = 728 min Time interval = 1 min Hyd. volume = 1,016,310 cuft Inflow hyds. = 5, 6 Contrib. drain. area = 252.130 ac Q (cfs) 280.00 240.00 200.00 160.00 120.00 40.00 Total Existing to Point Hyd. No. 7 -- 2 Year Q (cfs) 280.00 240.00 200.00 160.00 120.00 40.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 — Hyd No. 7 —Hyd No. 5 —Hyd No. 6 Time (min) 46 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3DO by Autodesk, Inc. v2020 Hyd. No. 9 Pond to Point A Hydrograph type = Reach Storm frequency = 2 yrs Time interval = 1 min Inflow hyd. No. = 3 - Pond Reach length = 1657.0 ft Manning's n = 0.025 Side slope = 50.0:1 Rating curve x = 0.677 Ave. velocity = 0.00 ft/s Modified Att-Kin routing method used. Q (cfs) 6.00 5.00 4.00 3.00 2.00 1.00 0.00 0 180 Hyd No. 9 Peak discharge Time to peak Hyd. volume Section type Channel slope Bottom width Max. depth Rating curve m Routing coeff. Pond to Point A Hyd. No. 9 -- 2 Year 360 540 720 Hyd No. 3 Monday, 04 / 19 / 2021 = 3.595 cfs = 799 min = 45,721 cuft = Trapezoidal = 6.0 % = 100.0 ft = 0.3 ft = 0.884 = 0.0164 Q (cfs) 6.00 5.00 4.00 3.00 2.00 1.00 0.00 1080 1260 1440 1620 Time (min) C►I Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3170 by Autodesk, Inc. v2020 Hyd. No. 10 Additional Eastern Stream to Point A Hydrograph type = SCS Runoff Storm frequency = 2 yrs Time interval = 1 min Drainage area = 116.720 ac Basin Slope = 0.0 % Tc method = User Total precip. = 3.62 in Storm duration = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor ' Composite (Area/CN) = [(50.360 x 75) + (2.990 x 86) + (41.370 x 55) + (22.140 x 77)] / 116.720 Q (cfs) 140.00 100.00 40.00 20.00 Additional Eastern Stream to Point A Hyd. No. 10 -- 2 Year Monday, 04/19/2021 = 128.71 cfs = 726 min = 434,975 tuft = 69` = 0 ft = 19.70 min = Type II = 484 Q (cfs) 140.00 120.00 100.00 40.00 20.00 I I I I I / I I I I I I IN 1 0.00 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 10 Time (min) 48 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Monday, 04 / 19 / 2021 Hyd. No. 11 Total Area to Eastern Stream Hydrograph type = Combine Peak discharge = 130.18 cfs Storm frequency = 2 yrs Time to peak = 726 min Time interval = 1 min Hyd. volume = 480,696 cuft Inflow hyds. = 9, 10 Contrib. drain. area = 116.720 ac Q (cfs 140.00 r 1 1.1 1,11111 .r �r 40.00 20.00 Q (cfs) 140.00 120.00 100.00 .loxrr 40.00 20.00 0I 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Time (min) Hyd No. 11 —Hyd No. 9 —Hyd No. 10 49 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Monday, 04 / 19 / 2021 Hyd. No. 12 Total Proposed to Point A Hydrograph type = Combine Peak discharge = 257.55 cfs Storm frequency = 2 yrs Time to peak = 728 min Time interval = 1 min Hyd. volume = 1,035,609 cuft Inflow hyds. = 6, 11 Contrib. drain. area = 128.320 ac Q (cfs) 280.00 240.00 200.00 160.00 120.00 40.00 Total Proposed to Point A Hyd. No. 12 -- 2 Year Q (cfs) 280.00 240.00 200.00 160.00 120.00 40.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 — Hyd No. 12 —Hyd No. 6 —Hyd No. 11 Time (min) 6141 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3DO by Autodesk, Inc. v2020 Monday, 04 / 19 / 2021 Hyd. No. 14 Sediment Basin Hydrograph type = Reservoir Peak discharge = 4.939 cfs Storm frequency = 2 yrs Time to peak = 734 min Time interval = 1 min Hyd. volume = 45,745 cuft Inflow hyd. No. = 2 - Drainage Area to Pond Max. Elevation = 494.86 ft Reservoir name = Sediment Basin Max. Storage = 32,370 cuft Storage Indication method used. Wet pond routing start elevation = 493.40 ft. Q (cfs 21.00 11 15.00 12.00 . �9 3.00 Sediment Basin Hyd. No. 14 -- 2 Year Q (cfs) 21.00 1a 15.00 12.00 •m � 3.00 0.00 0.00 0 180 360 540 720 900 1080 1260 1440 1620 1800 Hyd No. 14 — Hyd No. 2 f111111 [ Total storage used = 32,370 cult Time (min) 51 Pond Report Hydraflow Hydrographs Extension for Autodesk® Civil 3138 by Autodesk, Inc. v2020 Monday, 04 / 19 / 2021 Pond No. 2 - Sediment Basin Pond Data Contours -User-defined contour areas. Conic method used for volume calculation. Begining Elevation = 490.00 ft Stage / Storage Table Stage (ft) Elevation (ft) Contour area (sgft) Incr. Storage (tuft) Total storage (cult) 0.00 490.00 00 0 0 2.00 492.00 3,190 2,126 2,126 4.00 494.00 13,117 15,182 17,309 6.00 496.00 22,111 34,835 52,144 8.00 498.00 31,646 53,468 105,612 Culvert / Orifice Structures Weir Structures [A] [B] [C] [PrfRsr] [A] [B] [C] [D] Rise (in) = 15.00 Inactive 6.00 Inactive Crest Len (ft) = 15.71 20.00 0.00 0.00 Span (in) = 15.00 12.00 6.00 30.00 Crest El. (ft) = 494.70 495.70 0.00 0.00 No. Barrels = 1 1 1 1 Weir Coeff. = 3.33 3.33 3.33 3.33 Invert El. (ft) = 490.00 490.00 493.41 494.40 Weir Type = 1 Ciplti -- --- Length (ft) = 52.00 0.00 0.00 4.40 Multi -Stage = Yes No No No Slope I%) = 2.00 0.00 0.00 n/a N-Value = .013 .013 .013 n/a Orifice Coeff. = 0.60 0.60 0.60 0.60 Exfil.(in/hr) = 0.000 (by Contour) Multi -Stage = n/a NO Yes Yes TW Elev. (ft) = 0.00 Note: Cul"rt/Orifice outflows are analyzed under inlet (ic) and outlet (oc) control. Weir risers checked for orifice conditions (ic) and submergence (a). Stage (it) Stage / Discharge Elev (ft) 8.00 498.00 6.00 496.00 4.00 494.00 2.00 492.00 0.00 490.00 0.0 20.0 40.0 60.0 80.0 100.0 120.0 140.0 160.0 180.0 200.0 220.0 240.0 260.0 Total O Discharge (cfs) 52 Hydrograph Summary Report Hydraflow Hydrographs Extension for Autodesk®Civil 3DO by Autodesk, Inc. v2020 Hyd. No. Hydrograph type (origin) Peak flow We) Time interval (min) Time to Peak (min) Hyd. volume (cuff) Inflow hyd(s) Maximum elevation (fl) Total strge used (cuft) Hydrograph Description 1 SCS Runoff 28.51 1 719 64,614 -- Existing Drainage Area to Pond 2 SCS Runoff 33.82 1 721 86,242 -- ---- --- Drainage Area to Pond 3 Reservoir 7.425 1 735 86,241 2 494.67 28,929 Pond 5 SCS Runoff 327.07 1 725 1,036,192 ---- Exisiting Eastern Stream Contribution 6 SCS Runoff 306.75 1 730 1,186,342 ---- Drainage to Western Stream 7 Combine 613.49 1 727 2,222,535 5,6 Total Existing to Point A 9 Reach 5.286 1 811 86,202 3 Pond to Point A 10 SCS Runoff 308.34 1 725 976,855 Additional Eastern Stream to Point A 11 Combine 310.54 1 725 1,063,056 9,10 Total Area to Eastern Stream 12 Combine 597.43 1 727 2,249,397 6,11 Total Proposed to Point A 14 Reservoir 13.11 1 731 86,228 2 495.58 44,750 Sediment Basin Troxell PH Ponds.gpw Return Period: 10 Year Monday, 04 / 19 / 2021 53 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 1 Existing Drainage Area to Pond Hydrograph type = SCS Runoff Peak discharge Storm frequency = 10 yrs Time to peak Time interval = 1 min Hyd. volume Drainage area = 6.080 ac Curve number Basin Slope = 0.0 % Hydraulic length Tc method = User Time of conc. (Tc) Total precip. = 5.47 in Distribution Storm duration = 24 hrs Shape factor " Composite (Area/CN) = [(0.150 x 98) + (5.730 x 75)] 16.080 Q (cfs) 30.00 25.00 20.00 15.00 10.00 5.00 Existing Drainage Area to Pond Hyd. No. 1 -- 10 Year Monday, 04/19/2021 = 28.51 cfs = 719 min = 64,614 cult = 76` = 0 ft = 9.30 min = Type II = 484 Q (cfs) 30.00 25.00 20.00 15.00 10.00 5.00 0.00 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 1 Time (min) 54 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 2 Drainage Area to Pond Hydrograph type = SCS Runoff Peak discharge Storm frequency = 10 yrs Time to peak Time interval = 1 min Hyd. volume Drainage area = 7.090 ac Curve number Basin Slope = 0.0 % Hydraulic length Tc method = User Time of conc. (Tc) Total precip. = 5.47 in Distribution Storm duration = 24 hrs Shape factor Composite (Area/CN) = [(2.820 x 61) + (3.520 x 98) + (0.750 x 75)] / 7.090 Q (Cfs) 35.00 30.00 25.00 20.00 15.00 10.00 5.00 Drainage Area to Pond Hyd. No. 2 -- 10 Year Monday, 04/19/2021 = 33.82 cfs = 721 min = 86,242 cult = 81` = 0 ft = 11.90 min = Type II = 484 Q (cfs) 35.00 30.00 25.00 20.00 15.00 10.00 5.00 0.00 ' - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 2 Time (min) - 55 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 3 Pond Hydrograph type = Reservoir Peak discharge Storm frequency = 10 yrs Time to peak Time interval = 1 min Hyd. volume Inflow hyd. No. = 2 - Drainage Area to Pond Max. Elevation Reservoir name = Pond Max. Storage Storage Indication method used. Q (cfs) 35.00 30.00 25.00 20.00 15.00 10.00 5.00 Pond Hyd. No. 3 -- 10 Year Monday, 04/19/2021 = 7.425 cfs = 735 min = 86,241 cult = 494.67 ft = 28,929 cuft Q (cfs) 35.00 30.00 25.00 20.00 15.00 10.00 5.00 0.00 — 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 — Hyd No. 3 —Hyd No. 2 ®Total storage used = 28,929 cuff Time (min) 56 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 5 Exisiting Eastern Stream Contribution to Point A Hydrograph type = SCS Runoff Storm frequency = 10 yrs Time interval = 1 min Drainage area = 123.810 ac Basin Slope = 0.0 % Tc method = User Total precip. = 5.47 in Storm duration = 24 1 Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor ` Composite (Area/CN) = [(56.310 x 75) + (2.990 x 86) + (41.370 x 55) + (22.140 x 77)] / 123.810 Q (Cfs 350.00 300.00 250.00 200.00 150.00 100.00 50.00 Monday, 04/19/2021 = 327.07 cfs = 725 min = 1,036,192 cuft = 69` = 0 ft = 19.70 min = Type II = 484 Q (Cfs) 350.00 300.00 250.00 200.00 150.00 100.00 50.00 0.00 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 5 Time (min) 6YA Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 6 Drainage to Western Stream Hydrograph type = SCS Runoff Storm frequency = 10 yrs Time interval = 1 min Drainage area = 128.320 ac Basin Slope = 0.0 % Tc method = User Total precip. = 5.47 in Storm duration = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor ` Composite (Area/CN) = [(14.190 x 75) + (16.170 x 86) + (34.420 x 55) + (63.540 x 77)] 1128.320 Q (cfs) 320.00 240.00 200.00 160.00 120.00 Drainage to Western Stream Hyd. No. 6 -- 10 Year Monday, 04/19/2021 = 306.75 cfs = 730 min = 1,186,342 cuft = 72` = 0 ft = 28.60 min = Type II = 484 Q (cfs) 320.00 280.00 240.00 200.00 160.00 120.00 40.00 0.00 1 1 1 1 1 ' 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 6 Time (min) I.1a Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3170 by Autodesk, Inc. v2020 Monday, 04 / 19 / 2021 Hyd. No. 7 Total Existing to Point A Hydrograph type = Combine Peak discharge = 613.49 cfs Storm frequency = 10 yrs Time to peak = 727 min Time interval = 1 min Hyd. volume = 2,222,535 cuft Inflow hyds. = 5, 6 Contrib. drain. area = 252.130 ac Q (cfs) 630.00 450.00 360.00 270.00 180.00 Total Existing to Point A Hyd. No. 7 -- 10 Year Q (cfs) 630.00 540.00 450.00 270.00 180.00 0.00 ' 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 — Hyd No. 7 —Hyd No. 5 —Hyd No. 6 Time (min) 59 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Monday, 04 / 19 / 2021 Hyd. No. 9 Pond to Point A Hydrograph type = Reach Peak discharge = 5.286 cfs Storm frequency = 10 yrs Time to peak = 811 min Time interval = 1 min Hyd. volume = 86,202 cult Inflow hyd. No. = 3 - Pond Section type = Trapezoidal Reach length = 1657.0 ft Channel slope = 6.0 % Manning's n = 0.025 Bottom width = 100.0 ft Side slope = 50.0:1 Max. depth = 0.3 ft Rating curve x = 0.677 Rating curve m = 0.884 Ave. velocity = 0.00 ft/s Routing coeff. = 0.0157 Modified Aft -Kin routing method used Q (cfs) 8.00 4.00 0.00 0 180 — Hyd No. 9 Pond to Point A Hyd. No. 9 -- 10 Year 360 540 Hyd No. 3 720 900 1080 1260 1440 0 (cfs) 8.00 4.00 2.00 awli- 0.00 1620 Time (min) 60 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3138 by Autodesk, Inc. v2020 Hyd. No. 10 Additional Eastern Stream to Point A Hydrograph type = SCS Runoff Storm frequency = 10 yrs Time interval = 1 min Drainage area = 116.720 ac Basin Slope = 0.0 % Tc method = User Total precip. = 5.47 in Storm duration = 24 hrs Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor ` Composite (Area/CN) = [(50.360 x 75) + (2.990 x 86) + (41.370 x 55) + (22.140 x 77)] / 116.720 Q (cfs) 320.00 240.00 200.00 160.00 120.00 Additional Eastern Stream to Point A Hyd. No. 10 -- 10 Year Monday, 04/19/2021 = 308.34 cfs = 725 min = 976,855 cuft = 69` = 0 ft = 19.70 min = Type II = 484 Q (cfs) 320.00 280.00 240.00 200.00 160.00 120.00 :t tt 40.00 0.00 ' '-% - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 10 Time (min) 61 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Monday, 04 / 19 / 2021 Hyd. No. 11 Total Area to Eastern Stream Hydrograph type = Combine Peak discharge = 310.54 cfs Storm frequency = 10 yrs Time to peak = 725 min Time interval = 1 min Hyd. volume = 1,063,056 cuft Inflow hyds. = 9, 10 Contrib. drain. area = 116.720 ac Q (cfs) 320.00 240.00 200.00 160.00 120.00 Total Area to Eastern Stream Hyd. No. 11 -- 10 Year Q (cfs) 320.00 280.00 240.00 200.00 160.00 120.00 40.00 0.00 --L— 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 11 —Hyd No. 9 —Hyd No. 10 Time (min) :ra Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Monday, 04 / 19 / 2021 Hyd. No. 12 Total Proposed to Point A Hydrograph type = Combine Peak discharge = 597.43 cfs Storm frequency = 10 yrs Time to peak = 727 min Time interval = 1 min Hyd. volume = 2,249,397 cuft Inflow hyds. = 6, 11 Contrib. drain. area = 128.320 ac Q (cfs) 630.00 450.00 360.00 270.00 180.00 Total Proposed to Point A Hyd. No. 12 -- 10 Year Q (cfs) 630.00 540.00 450.00 270.00 180.00 0.00 ' ' 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 — Hyd No. 12 —Hyd No. 6 —Hyd No. 11 Time (min) 63 Hydrograph Report Hydragow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 14 Sediment Basin Hydrograph type = Reservoir Peak discharge Storm frequency = 10 yrs Time to peak Time interval = 1 min Hyd. volume Inflow hyd. No. = 2 - Drainage Area to Pond Max. Elevation Reservoir name = Sediment Basin Max. Storage Storage Indication method used. Wet pond routing start elevation = 493.40 ft. Sediment Basin Monday, 04/19/2021 = 13.11 cfs = 731 min = 86,228 cult = 495.58 ft = 44,750 tuft Q (cfs) Hyd. No. 14 -- 10 Year Q (Cfs) 35.00 35.00 30.00 30.00 25.00 25.00 20.00 20.00 15.00 15.00 10.00 10.00 5.00 5.00 0.00 - - 0.00 0 180 360 540 720 900 1080 1260 1440 1620 1800 Hyd No. 14 —Hyd No. 2 ®Total storage used = 44,750 cuff Time (min) 64 Hydrograph Summary Report Hydraflow Hydrographs Extension for Autodesk®Civil 3DO by Autodesk, Inc. v2020 Hyd. No. Hydrograph type (origin) Peak flow We) Time interval (min) Time to Peak (min) Hyd. volume (cuff) Inflow hyd(s) Maximum elevation (fl) Total strge used (cuft) Hydrograph Description 1 SCS Runoff 38.69 1 719 88,286 Existing Drainage Area to Pond 2 SCS Runoff 44.60 1 721 114,917 Drainage Area to Pond 3 Reservoir 12.53 1 733 114,915 2 495.22 38,496 Pond 5 SCS Runoff 470.30 1 725 1,473,048 -- Exisiting Eastern Stream Contribution 6 SCS Runoff 432.04 1 730 1,656,800 ---- Drainage to Western Stream 7 Combine 873.66 1 727 3,129,849 5,6 Total Existing to Point A 9 Reach 6.414 1 806 114,875 3 Pond to Point A 10 SCS Runoff 443.36 1 725 1,388,693 Additional Eastern Stream to Point A 11 Combine 445.98 1 725 1,503,569 9,10 Total Area to Eastern Stream 12 Combine 850.20 1 727 3,160,368 6,11 Total Proposed to Point 14 Reservoir 25.41 1 728 114,902 2 496.01 52,487 Sediment Basin Troxell PH Ponds.gpw Return Period: 25 Year Monday, 04 / 19 / 2021 65 Hydrograph Report Hydragow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 14 Sediment Basin Hydrograph type = Reservoir Peak discharge Storm frequency = 25 yrs Time to peak Time interval = 1 min Hyd. volume Inflow hyd. No. = 2 - Drainage Area to Pond Max. Elevation Reservoir name = Sediment Basin Max. Storage Storage Indication method used. Wet pond routing start elevation = 493.40 ft. Sediment Basin Monday, 04/19/2021 = 25.41 cfs = 728 min = 114,902 cuft = 496.01 ft = 52,487 tuft Q (cfs) Hyd. No. 14 -- 25 Year Q (efS) 50.00 50.00 40.00 40.00 30.00 30.00 20.00 20.00 10.00 10.00 0.00 0.00 0 180 360 540 720 900 1080 1260 1440 1620 1800 Hyd No. 14 —Hyd No. 2 ®Total storage used = 52,487 tuft Time (min) U2 Hydrograph Summary Report Hydraflow Hydrographs Extension for Autodesk®Civil 3DO by Autodesk, Inc. v2020 Hyd. No. Hydrograph type (origin) Peak flow We) Time interval (min) Time to Peak (min) Hyd. volume (cuff) Inflow hyd(s) Maximum elevation (fl) Total strge used (cuft) Hydrograph Description 1 SCS Runoff 57.50 1 719 133,277 -- Existing Drainage Area to Pond 2 SCS Runoff 64.22 1 721 168,549 -- ---- --- Drainage Area to Pond 3 Reservoir 29.07 1 730 168,547 2 496.07 53,995 Pond 5 SCS Runoff 744.70 1 725 2,326,481 ---- Exisiting Eastern Stream Contribution 6 SCS Runoff 669.20 1 730 2,564,432 ---- Drainage to Western Stream 7 Combine 1369.35 1 727 4,890,914 5,6 Total Existing to Point A 9 Reach 9.480 1 780 168,502 3 Pond to Point A 10 SCS Runoff 702.05 1 725 2,193,257 Additional Eastern Stream to Point 11 Combine 705.61 1 725 2,361,755 9,10 Total Area to Eastern Stream 12 Combine 1331.94 1 727 4,926,193 6,11 Total Proposed to Point 14 Reservoir 48.11 1 726 168,529 2 496.34 61,127 Sediment Basin Troxell PH Ponds.gpw Return Period: 100 Year Monday, 04 / 19 / 2021 67 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 1 Existing Drainage Area to Pond Hydrograph type = SCS Runoff Storm frequency = 100 yrs Time interval = 1 min Drainage area = 6.080 ac Basin Slope = 0.0 % Tc method = User Total precip. = 8.96 in Storm duration = 24 hrs ' Composite (Area/CN) = [(0.150 x 98) + (5.730 x 75)] 16.080 Q (Cfs 60.00 50.00 40.00 30.00 20.00 10.00 Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor Monday, 04/19/2021 = 57.50 cfs = 719 min = 133,277 cuft = 76` = 0 ft = 9.30 min = Type II = 484 Q (Cfs) 60.00 50.00 40.00 30.00 20.00 10.00 0.00 1 10.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 Hyd No. 1 Time (min) H:7 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 2 Drainage Area to Pond Hydrograph type = SCS Runoff Storm frequency = 100 yrs Time interval = 1 min Drainage area = 7.090 ac Basin Slope = 0.0 % Tc method = User Total precip. = 8.96 in Storm duration = 24 hrs Composite (Area/CN) = [(2.820 x 61) + (3.520 x 98) + (0.750 x 75)] / 7.090 Q (Cfs 70.00 .� 1I 50.00 30.00 20.00 10.00 Peak discharge Time to peak Hyd. volume Curve number Hydraulic length Time of conc. (Tc) Distribution Shape factor Monday, 04/19/2021 = 64.22 cfs = 721 min = 168,549 cuft = 81` = 0 ft = 11.90 min = Type II = 484 Q (Cfs) 70.00 .1 11 50.00 40.00 30.00 20.00 10.00 0.00 - 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 2 Time (min) 69 Hydrograph Report Hydraflow Hydrographs Extension for Autodesk® Civil 3130 by Autodesk, Inc. v2020 Hyd. No. 3 Pond Hydrograph type = Reservoir Peak discharge Storm frequency = 100 yrs Time to peak Time interval = 1 min Hyd. volume Inflow hyd. No. = 2 - Drainage Area to Pond Max. Elevation Reservoir name = Pond Max. Storage Storage Indication method used. Q (CfS11 70.00 .1 11 50.00 c 1 11 30.00 20.00 10.00 Monday, 04/19/2021 = 29.07 cfs = 730 min = 168,547 cuft = 496.07 ft = 53,995 tuft Q (Cfs) 70.00 .1 11 50.00 40.00 30.00 20.00 10.00 0.00 0.00 0 120 240 360 480 600 720 840 960 1080 1200 1320 1440 1560 Hyd No. 3 H No. 2 Time (min) Hyd ®Total storage used = 53,995 cuff 70 om wynm aunogaeea[aon namuoeae-oevebPmem mmPuanrespremmem-verslonao $ Bea] auP asMIMl Wd.ao<.mam.x 0 p3ll! pan auP uzMIMI and sP vdlxx Pwle nudl POUltry xou:e - unMaL u za pa una[Oeueloymemv Ptoie[N w Site Information Post -Development Pmject (Treatment Volume and Loads) EmvT.IalDatu[bed Area(a[res) JJI Pn-R[Oewb eMlaM love[ a[ Ged: save papap,pe[ilimtian. pall..Spaa i—Pro$[rl tb mna [a te. oreu enrerea ranee nvI O Iledsmm.aoreoearereeP TPLOaDMURIOxx Rmdtam w.yaire.s� l�l-u,em.mm, .ay —wean -aaw Ko+emm. i3aB4DWI, aTwre•wal�l Po ..*ppmem and rPvni tree/o�awel�l-�[.amel. •eaoe -lwl�eaa 4o+emb m.orne.anaw vn arrGed OB. oB. y R •wm/a�..wa.re.x.we�m..m+n.®e.....0 ere rmwx....nvawm.. uanx Colls"m aeMfca,dus wa i.) 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Post Development Requirementfor m wea.ea[tbn 11a 1. pB/vrl xImspn toads pMormatlonal Purpases SiteArea ads only) arere.,,,�e �Taw114M1 Bs.ae re Issvn��ax..mPx..aN awn Jsaz 71 Site Results (Water Quality Compliance) Area Checks DA A DA. B O.A. C O.A. O D.A E AREA CHECK FOREST/OPEN SPACE Jac) DOD DOD DOD DOD DOD IMPERVIOUS COVER Jac) DOD DOD DOD DOD DOD IMPERVIOUSCVMRTRFATEO(a[) DOD DOD DOD DOD DODOR. MM bNNAGED TURF ARFA(ac) DOD DOD DOD DOD DOD rMAGTU NEDRFARFATRFATED(aC) am m am am ma a ARFACHECK OR. ON. OR. OR. OR. Site Treatment Vdume ye) 16• Runoff Reduction Volume and TP By Drainage Area DA A DA. B DA. C DA. D DA E TOTAL RUN0FFREDUCn0NV0LUMEA HEVEDN 0 0 0 0 0 0 TP MAD AVARRBIE MR REMOVAL(Ib/yr) MOD MOD DOD DOD DOD O.CU IP UNUI RFWCTION ACHIEVED (Ib/yr) O.m O.m OAO am OAO 0.00 TPU REMAINING (Ib/yr) MOD MOD QOD QOD QOD am MRROGEIYUMDREDULTIONACHIEVED(Ib/yr) am am QOD QOD QOD am Total Phosphorus RNALP-DEVEUMENTWUMD(Ib/V) 101 TP ULRD REDUCTION REQUIRED(Ib/yr) QM TP LOAO REDUCTION ACNIEVED(Ib/yr) a0D TP UMD REMAINING (Ib/yr): REMAINING TP UMD RED"ORY REQUIRED(Ib/Vo: MOO "TARGET TP REDUCnON EXCEEDED BY 0.06 IR/YFAR" Total Nitrogen (For Information Purposes) POST-DEVDOPMEMLMD(Ib/yr) n.63 MRROGEIYUMDREDU CIPIACHIEVED(Ib/yr) a0D REMAINING POST-0EVEIOPMFM NO'ROGFN LOAD IIb/y0 n.m 1W Other Documents BLACKWELL ENGINEERING, PLC 566 E. MARKET ST. • HARRISONBURG, VIRGINIA 22801 • (540) 432-9555 - FAX (540) 434-7604 May 26, 2021 Broc Troxell 7369 Dyers Mill Lane Scottsville, VA 24590 RE: Stormwater Pollution Prevention Plan (SWPPP) Dear Broc: This cover letter should help explain the SWPPP for the Troxell Poultry House job. If you or your contractors have any questions, please feel free to contact our office anytime. The report in the front serves as a guide to which Better Management Practices (BMP) your site contains. Everything highlighted in yellow should be read and/or filled out by the appropriate person on site. All contractors should read over report. Section 1.7 gives a list of endangered species and how to identify them. Appendices: A. Maps of site B. DEQ General Permit: This should be read carefully by the contractor and the delegated person in charge of the SWPPP. C. VSMP Statement: Copies of the VSMP registration and fee form are here. When your permit comes in the mail, a COPY of it should go in this section as well. D. Inspections Forms: 2 Inspection forms for each of the BMP's are in this section. If you should need more, make copies, make your own, or contact our office for more copies. BMP's are to be inspected every 5 business days and within 48 hours of a run-off producing rain. E. Corrective Action Log: If any BMP's needed to be repaired, replaced, or maintained, any record of it should be kept here. If you should need more, make copies, make your own, or contact our office for more copies. F. Amendment Log: If any changes to the SWPPP are made during construction, any records of the changes should be made here. If you should need more, make copies, make your own, or contact our office for more copies. G. Subcontractor Certification/Agreement: Any sub -contractors on site that could impact storm water should read over the SWPPP and sign this form. Copies of the signed forms should be kept in this section. If you should need more, make copies, make your own, or contact our office for more copies. H. Grading and Stabilization: All records of grading and stabilization, including dates, should be made in this section. If you should need more, make copies, make your own, or contact our office for more copies. I. Delegation of Authority: Records of delegation for maintaining SWPPP's should be made and kept in this section. J. DEQ Letters: a. Transfer Agreement (1 page): If the property covered under the SWPPP should be sold at any time during construction, this form should be filled out and sent to the appropriate address on the form in order to transfer the SWPPP permit to the new owner's name. b. Notice of Termination (2 pages): Once construction in complete, this form should be filled out according to the directions on page 2. This will close your permit. K. Additional Info: a. A diagram on when to report a spill b. Contacts for DEQ Erosion and Sediment Admin, and DEQ for your area L. ESC Plan and Drawings: Approved ESC plan and drawings The poster in the front of each book is for pasting a COPY of your VSMP permit when you receive it in the mail. Keep the original in a safe place. The copy of your permit should be displayed at the entrance to your site, according to DEQ, along with the SWPPP contact person's name and phone number. DEQ considers this a living document. It should be updated as often as required. Most questions can be answered by reading Appendix B (General Permit). Remember: BMP's are to be inspected every 5 business days and within 48 hours of a run-off producing rain. Please call our office (540-432-9555) if you have any questions about this letter or the SWPPPs. Sincerely, f'l Hunter Knepp Please place a copy of the permit coverage letter issued by DEQ here Troxell Poultry House Stormwater Pollution Prevention Plan Will be available for review upon request Please Contact At phone number To schedule viewing times during normal business hours. A copy of Troxell Poultry House's Stormwater Pollution Prevention Plan is located Acceptance of Stormwater Pollution Prevention Plan by Authorized Representative The following authorized representative needs to sign the statement below: A. For a corporation: by a responsible corporate officer. For the purpose of this part, a responsible corporate officer means: a. a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation; or b. the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; B. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or C. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this part, a principal executive officer of a public agency includes: (i) the chief executive officer of the agency or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. Or by a duly authorized representative of that person. A person is a duly authorized representative only if: A. The authorization is made in writing by a person described above; B. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the operator. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and C. The signed and dated written authorization is included in the SWPPP. A copy must be provided to the permit -issuing authority, if requested. "I certify under penalty of law that I have read and understand this document and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." Print Name Title Sign Name Date