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Home My WebLink AboutWPO201800075 VSMP - SWPPP 2018-08-01Storm Water Pollution Prevention Plan (SWPPP) In Compliance with: General VPDES Permit for Discharges of Stormwater From Construction Activities, Permit No. VAR10 Virginia Stormwater Management Program (VSMP) Stanley Martin at Avinity Estates Albemarle County, Virginia WSSI #30339.01 Prepared for: Piedmont Neighborhoods, LP c/o Stanley Martin Homes 404 People Place, Suite 303 Charlottesville, VA 22911 August 2018 Prepared by: 4, eo: '••-- Wetland a Studies and Solutions,lnc a DAVEY. company 717 N Courthouse Rd - Suite 101 Richmond, Virginia 23236 Tel: 804-253-5644 Email: WSSI-Inspectors@wetlandstudies.com www.wetlandstudies.com Storm Water Pollution Prevention Plan (SWPPP) In compliance with. General VPDES Permit for Discharges of Stormwater From Construction Activities, Permit No. VAR10 Virginia Stormwater Management Program (VSMP) Stanley Martin at Avinity Estates (±11.71 acres) WSSI #30339.01 SWPPP Coordinator: John Kessler (Name of Person) Land Acquisition Manager (Title) Stanley Martin Homes (Company) (434) 964.6173 (Phone #) Delegation of Authority: (Name of Person or Company) "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." "I certify that the SWPPP coordinator named above is my duly authorized representative for this Project; and that the delegated authority has the right to modify the SWPPP and sign inspection reports in accordance with Part II A 7 of the Permit". Signature: [Authorized Name: Jerf Title: Vice per Part III K 1 of the Permit, Appendix 1 J Swink of Land — Piedmont Dater�1 911 zC>r oo Legal Entity: Piedmont Neighborhoods, LP Stanley Martin at Avinity Estates Wetland August 2018 S�°drca and Sdu��.ns•ln g a DMY-4 i. company Stormwater Pollution Prevention Plan (SWPPP) Stanley Martin at Avinity Estates (±11.71 acres) WSSI #30339.01 Albemarle County, Plan: Avinity Estates TABLE OF CONTENTS Introduction A) Plan Purpose B) Background -Construction General Permit No. VAR OK607 (WP02015-00057) II. Plan Requirements (WP0201800075) A) General Requirements 1) Deadlines 2) Incorporation of Other Plans 3) Plan Administration 4) Plan Updates & Modifications B) Specific Requirements 1) SWPPP Contents 2) Controls and Measures 3) Erosion and Sediment Control Plan 4) Stormwater Management Plan 5) Pollution Prevention Plan 6) Receiving Waters 7) TMDL Limitations & Impaired Waters 8) Maintenance 9) Inspections 10) Non-stormwater Discharges References Appendix 1 DEQ Permit Letter, General Permit for Discharges of Stormwater from Construction Activities (VAR 10) Appendix 2 Submittals [Registration Statement, Fee Form, Permit History, etc.] Appendix 3 Record of Land Disturbance & SWPPP Modifications Appendix 4 Record of Inspections Appendix 5 Record of Contractor Certification Appendix 6 Record of Inspector Certification Appendix 7 Temporary BMP Location Tracking Appendix 8 Plan Sheets Appendix 9 Record of Public Availability Appendix 10 Miscellaneous [i.e. Maps, Impaired Waters Fact Sheets, Nutrient Offsets, etc.] Stanley Martin at Avinity Estates • �etland August 2018 'T"d1e,-d5a tji ' CV1VEY#—wmpany Stormwater Pollution Prevention Plan (SWPPP) Stanley Martin at Avinity Estates (±11.71 acres) WSSI #30339.01 Introduction A) Plan Purpose This Stormwater Pollution Prevention Plan (Plan) has been developed as a requirement of the Virginia Stormwater Management Program (VSMP) General Permit for Discharges of Stormwater from Construction Activities (Permit), as defined in 9 VAC 25-880 et seq. The purpose of this Plan is to: 1) Identify potential sources of pollution that may reasonably be expected to affect the quality of stormwater discharges from the construction site, and, 2) To describe and ensure the implementation of practices that will be used to reduce pollutants in stormwater discharges from the construction site and to assure compliance with the conditions of the Permit. Implementation of the components of this Plan is required as a condition of the Permit (Appendix 1). The County of Albemarle, VA has been granted authority to administer the Virginia Pollutant Discharge Elimination System (VPDES) program and is therefore the regulatory authority overseeing the implementation of this Plan. B) Background - Construction General Permit No. VAR10 The Permit has a fixed term of 5 years from the effective date of July 1, 2014 and is required for all projects that will disturb 1 or more acres of total land area. To obtain a Permit, operators must submit a Registration Statement (Appendix 2) prior to the commencement of construction activities (clearing, grading, or other activities that result in soil disturbance). The Permit authorizes the discharge of stormwater from construction activities until the Permit's expiration date. The Permit also authorizes the discharge of stormwater from offsite support activities, provided that certain conditions are met as outlined in the Permit (Part I A.2.). Certain non-stormwater discharges are also authorized by the Permit, provided the conditions contained in the Permit (Part I E.) are met. Upon final stabilization of the site, a Notice of Termination must be submitted to the VSMP Authority within 30 days. Termination of authorizations to discharge shall be effective upon notification from the County of Albemarle that the provisions of subsection A have been met or 60 days after submittal of the notice of terminations, whichever occurs first. Stanley Martin at Avinity Estates August 2018 Page 4 a QAYEY1. company II Plan Requirements A) General Requirements 1) Deadlines The Plan shall be prepared prior to the submittal of the Registration Statement and shall provide for compliance with the terms and schedule of the Permit beginning with the initiation of construction activities. 2) Incorporation of Other Plans The Plan requirements of the Permit are satisfied by incorporating by reference other plans developed for this construction activity, provided that the other plans meet or exceed the requirements of Part H.D. of the Permit. The construction plans developed for this project, Avinity Estates been approved by Albemarle County. The construction plans meet current Albemarle County requirements regarding erosion and sediment control and stormwater management, and also comply with state regulatory requirements as presented in the Vier inia Erosion and Sediment Control Handbook, Third Edition. All plans incorporated by reference into the Plan are enforceable under the Permit. The above referenced plan(s) will be hereby referred to as the "Project Design Plans". The Stormwater Pollution Prevention Plan is referred to as the "Plan." 3) Plan Administration The Plan shall be certified in accordance with the Permit (the certification statement is presented in the beginning of this Plan). Copies of the Plan shall be kept on -site and be made available to the Department, or other regulatory agencies having authority, upon request. The Plan must also be available to all operators identified as having responsibilities to carry out provisions contained in the Plan. The Plan must be made available to the agencies listed in the Section II.D.2 of the Permit at the time of on -site inspections. The Plan must be maintained on -site when no personnel are present — if no such location exists on -site, notice of the SWPPP's location must be posted in accordance with the Section ILC. Furthermore, a sign or some form of notice must be posted near the entrance of the construction site (Section II.C.). Additionally, the Plan must be made available to the public either electronically or by hard copy per Section II.D.3. A Record of Public Availability is located within Appendix 9. 4) Plan Updates & Modifications The Plan shall be amended whenever there is a change in design, construction, operation, or maintenance of the construction site that has a significant effect on the potential for the discharge of pollutants to surface waters and that has not been addressed in the normal implementation of the Plan. The Plan shall also be updated whenever it is found to be Stanley Martin at Avinity Estates August 2018 •-- Wetland s pare, and Saluiio'u�l a QAVEA company Page 5 ineffective in meeting the requirements of the Permit. If approval by the Virginia Erosion and Sediment Control Program (VESCP) authority, VSMP authority, or department is necessary for the control measure, revisions shall be completed no later than seven calendar days following approval. Modifications to the Plan as well as dates of major land disturbance, stabilization, and activity will be noted within the "Record of Land Disturbance and SWPPP Modifications" document found within Appendix 3. If modification or amended activities cannot be adequately described within Appendix 3, additional documentation will be included within the Plan. B) Specific Requirements 1) Stormwater Pollution Prevention Plan Contents Many of the items required by the Permit (Part II A., Appendix 1) can be found in the Project Design Plans, which are incorporated by reference into this Plan. A summary of the required elements is provided in Table 1, with a reference to the sheet number in the design plans where the required element can be located. SEE NEXT PAGE FOR TABLE 1. Stanley Martin at Avinity Estates C tXTPt1,3"A )-- August 2018 Page 6 a QAYEY1. company Table 1. Site Description Elements Please refer to the referenced location (i.e. Plan Sheet #) in the Project Design Plans or as referenced elsewhere. Permit Location' Part II REQUIRED ELEMENT Aviniry Estates A.1... a. A signed copy of the registration statement. See Appendix 2 b Upon receipt, a copy of the notice of coverage under the general VPDES permit (i.e. notice of See Appendix 1 coverage letter). C. A copy of the general VPDES permit. See Appendix 1 d. Description of construction activity. SHEET #7 e. A legible site plan, to include the following: - e.(1) Directions of stormwater flow and approximate slopes anticipated after major grading SHEETS activities. #345 e (2) Limits of land disturbance including steep slopes and natural buffers around surface waters SHEETS that will not be disturbed. #849 e.(3) Location of major structural and nonstructural control measures. SHEETS #8-#9 e.(4) Locations of surface waters. See Exhibits 1-4, Appendix 10 e.(5) Locations where concentrated stormwater is discharged. SHEETS #345 & #849 Locations of support activities, when applicable and when required by the VSMP authority e.(6) (vehicle washing areas, storage areas, concrete wash out areas, fueling areas, sanitary waste See onsite map facilities, etc e (7) The location of the on -site rain gauge or methodology established in consultation with the See Appendix 4 VSMP authority. (Inspection Forms - ADDITIONAL INFORMATION - A legible general location map See Appendix 10 Description of construction sequence of soil disturbing activities. SHEETS #6-#7 Record of dates when major grading activities occur. See Appendix 3 Receiving and impaired waters information. See Sect. II.13.6 & 7 below Description of other potential pollution sources, including vehicle fueling, chemical storage See Sect. 5 below & areas, sanitary waste facilities, construction debris, litter, etc. Appendix 7 '/Attach to this Plan any required elements that are not found in the design plans.] 2) Controls and Measures The Permit requires the implementation of various types of controls and measures that are implemented to control pollutants in stormwater discharges from the project site. The Permit specifically requires the implementation of erosion and sediment control practices (both structural and non-structural), stormwater management practices, and specific other controls to reduce pollutants. All E&S and SWM/BMP controls employed in this project were selected to meet and/or exceed state and local requirements and are detailed in the Project Design Plan(s). Stanley Martin at Avinity Estates August 2018 Wetland Page 7 and 5^luiio'u�l a QAVEYI. company 3) Erosion and Sediment Control Plan The Project Design Plans for this project contain detailed information regarding erosion and sediment controls used in this project. Specifically, E&S control measures can be found on the project design plans; Sheets #849 (also located within Appendix 8). These plans shall include a statement describing the maintenance responsibilities required for the E&S controls used. The project design plans should adequately: a) Control the volume and velocity of stormwater runoff within the site to minimize soil erosion; b) Control stormwater discharges; c) Minimize the amount of soil exposed during the construction activity; d) Minimize the disturbance of steep slopes; e) Minimize sediment discharges from the site; f) Provides and maintains natural buffers around surface waters; g) Minimize soil compaction; h) Ensure 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; i) Utilize 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. Refer to Part II. A.2 of the permit for a more detailed list of erosion and sediment control plan requirements. 4) Stormwater Management Plan Stormwater management plans ensure the implementation and maintenance of post - development stormwater management controls to minimize pollutants in stormwater discharges from the site after final stabilization and general permit termination has occurred. Stormwater management controls that mitigate changes to pre -development runoff characteristics assist in protecting and maintaining the physical and biological characteristics of receiving streams and wetlands. Therefore, SWPPPs must include an approved stormwater management plan for new construction activities, a stormwater management plan compliant with the requirements of 9VAC25-870-93 through 9VAC25-870-99 of the VSMP Regulation for existing construction Stanley Martin at Avinity Estates August 2018 Page 8 a QAVEYI. company activities, or a stormwater management plan prepared in accordance with department -approved annual standards and specifications. The project design plans contain detailed information regarding stormwater management for this project. Specifically, elements required by 9VAC25-870 can be found on Sheets #546. 5) Pollution Prevention Plan The following Pollution Prevention Plan (Table 2) addresses potential pollution generating activities that may be expected to affect the quality of stormwater discharges from construction and related support activities. Specific locations of potential pollutants can be found on the updated project design plans or as referenced elsewhere. The person responsible for implementing the pollution prevention plan is the SWPPP Coordinator. All necessary personnel must be familiar with practices involved in: prevention, stopping, containing, clean up, and reporting any potential pollutant. SEE NEXT PAGE FOR TABLE 2. Stanley Martin at Avinity Estates C XYL.t1,3"A )-- August 2018 Page 9 a QAVEYI. company Table 2. Pollution Prevention Plan Prevention - Stopping - Containing - Cleanup - Reporting A spill is reportable if it; causes a sheen (the sheen rule), creates discoloration/emulsion on surface waters, or reaches storm drains. Any Fish Kills must be reported. Reporting information regarding specific substances can be found below. Potential Pollution Generating Prevention/Response Activities: Quick Reference Chart Vehicle refueling will be conducted in a dedicated location away from Fuel and Vehicle access to surface waters. Secondary containment (berms), readily Maintenance available spill kits and cover will be provided where appropriate. For additional information, see Section 5.b below. Soaps, Solvents, Chemicals will be safely stored in sealed containers when not in use. Detergents & Clean-up and disposal will be done in a manner to prevent contact with Wash Water stormwater, utilizing; tarps, buckets, and proper disposal techniques. Hazardous For additional information, see Section 5.c below. Materials Chemicals will be stored in sealed containers in a safe location. Likely Hazardous or chemicals on site include: asphalt sealants, adhesives, concrete Toxic Chemicals admixtures, pesticides, herbicides, insecticides, fertilizers, and landscape materials. For additional information, see Section 5.c below. Fertilizers Fertilizers will be applied per manufactures recommendations and not during rainfall events. For additional information, see section 5.c below. On site portable lavatories must be located away from surface waters Sanitary Wastes and storm drains. Any spills must be cleaned according to federal, state and local regulations. For additional information, see section 5.d below. Wash Water Wash water will be directed to sediment basins or traps, using filtration Non-Stormwater without Soaps devices such as filter bags or sand filters, or similarly effective controls. Discharges Site Excavation Must pass through a sediment trapping device and be released onto a (Examples listed in Dewatering stabilized surface. Conveyance channels must be stabilized. Sect 2. B. 10) Utility Flushing Energy from clean water releases must be appropriately dissipated in a stabilized area. For additional information, see Section 5.f below. Concrete wash water will be directed into a leak -proof settling basin or container. The container or basin shall be designed so that no overflows can occur due to inadequate sizing or precipitation. Hardened concrete Concrete Waste & wastes shall be removed and disposed of in a manner consistent with Wash Water the handling of other construction wastes. Liquid concrete wastes shall Managing Waste 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. For additional information, see Section 5.e below. Solid Waste All solid waste and debris must be deposited in dumpsters and kept out of surface waters. Other Stanley Martin at Avinity Estates --(,Wetland August 2018 a DAVEA. company Page 10 a) Spills Oil, chemical or other hazardous substance spills that exceed the reportable threshold, will be reported to the Department in accordance with Part III G. of the Permit as soon as the discharge is discovered, but no later than 24 hours. A reportable quantity of oil is defined by the EPA as a discharge to surface waters that causes a sheen, discoloration, and/or an emulsion. Reports will be made to the following: 1) DEQ Valley Regional Office Phone: (540) 574-7800 Pollution Response Program: (540) 574-7854 4411 Early Road Harrisonburg, VA 28801 2) Virginia Department of Emergency Management Emergency Operations Center (EOC) Phone: 1-(800) 468-8892 Materials and equipment necessary for oil or chemical spill cleanup will be kept in the temporary material storage trailer onsite. Equipment will include, but not be limited to, brooms, dust pans, mops, rags, gloves, goggles, kitty litter, sand, saw dust, and plastic and metal trash containers. All oil or other chemical spills will be cleaned up immediately upon discovery. Spills large enough to reach the storm sewers will be reported to the National Response Center at 1- 800-424-8802. In the event of a hazardous spill contact: 9-1-1 b) Fuels and Oils (i) The State Code of Virginia §62.1-44.34:19, states that discharges that may be reasonably expected to enter state waters, lands or storm drains must be reported. In the event of a spill, it will be cleaned up immediately and the material, including any contaminated soil, will be disposed of according to all federal, state, and local regulations. (ii) Any on -site storage tanks will have a means of secondary containment. (iii) All vehicles on site will be monitored for leaks and receive regular preventive maintenance to reduce the chance of leakage. (iv) Petroleum products will be stored in labeled, sealed containers. (v) Spill kits will be included with all fueling sources and maintenance activities. Stanley Martin at Avinity Estates August 2018 Wetland s��are, and Saluiio'u�l a QAYEY1. company Page 11 c) Hazardous and Toxic Chemicals (i) Spills of hazardous or toxic chemicals that exceed the reportable quantity threshold must be reported as stated above in Section II.B.5.a. The EPA lists reportable quantity thresholds under 40CFR Part 110, 40 CFR part 117or 40 CFR part 302. (ii) All paint containers and curing compounds will be tightly sealed and stored when not required for use. Excess paint will not be discharged to the storm sewers, but will be properly disposed according to the manufacturer's instructions. Spray guns will be cleaned on a removable tarp. (iii) Chemicals used on -site are kept in small quantities and stored in closed containers undercover and kept out of direct contact with stormwater. As with fuels and oils, any inadvertent spills will be cleaned up immediately and disposed of according to federal, state, and local regulations. (iv) Fertilizers will be applied only in the minimum amounts recommended by the manufacturer. (v) Fertilizers will be worked into the soil to limit exposure to stormwater. (vi) Fertilizers will be stored under cover and partially used bags will be transferred to a sealable bin to avoid spills. d) Sanitary Waste Portable lavatories are located on -site and are serviced on a regular basis by a contractor. They will be located in upland areas away from direct contact with surface waters. Any spills occurring during servicing will be cleaned up immediately, including any contaminated soils, and disposed of according to all federal, state, and local regulations. e) Concrete (i) Concrete trucks will not be allowed to wash out or discharge surplus concrete or drum wash water on the site, except in a specially designated concrete washout area which contains all wash water resulting from washout activities. (ii) Form release oil used for decorative stone work will be applied over a pallet covered with an absorbent material to collect excess fluid. The absorbent material will be replaced and disposed of properly when saturated. Stanley Martin at Avinity Estates C XYL.t1,3"A )-- August 2018 Page 12 a QAVEYI. company An example concrete washout design (Wetland Studies and Solutions, Inc.) can be found within Appendix 10. f) Water Testing When testing/cleaning of water supply lines, the discharge from the tested pipe will be collected and conveyed to a completed stormwater pipe system for ultimate discharge into a sedimentation basin or SWM/BMP facility. g) Spill Reporting and Documentation The following information needs to be included in the reporting documentation: • Name, address, and telephone number of the person reporting and the responsible party • Specific location of the incident Date and time the incident occurred or was discovered • Name of the chemical/material released • Source and cause of the release • Total quantity discharged • Medium into which the substance was discharged • Amount spilled into water • Weather conditions • Name of the carrier or vessel, the railcar/truck number, or other identifying information • Number and type of injuries or fatalities • Whether an evacuation has occurred • Estimation of the dollar amount of property damage • Description of current and future cleanup actions • Other agencies notified or about to be notified 6) Receiving Waters The receiving waters for this site is/are Moores Creek. The USGS Quad map and National Wetlands Inventory (NWI) map can be found within Appendix 10. The receiving waters for this project are impaired. Factsheets for waters identified as impaired in the 2016 § 305(b)/303(d) Water Quality Assessment Integrated Report (along with any associated documentation) can be found in Appendix 10. 7) Total Maximum Daily Load (TMDL) Limitations & Impaired Waters Upon obtaining coverage under the 2014 Construction General Permit, DEQ will determine if the land disturbing activity will discharge to a TMDL water body and identify any additional measures needed to address the TMDL. This project resides within the Chesapeake Bay, for which a TMDL wasteload allocation has been established. Stanley Martin at Avinity Estates August 2018 Wetland s��are, and Saluiio'u�l a QAVEA company Page 13 The Chesapeake Bay TMDL is a comprehensive "pollution diet" to restore the health of the Bay and its local streams, creeks and rivers. The Chesapeake Bay TMDL — the largest such cleanup plan ever developed by the U.S. Environmental Protection Agency (EPA) — sets limits on nitrogen, phosphorus and sediment pollution necessary to meet water quality standards in the Bay and its tidal rivers. The Chesapeake Bay TMDL was prompted by insufficient restoration progress and continued poor water quality in the Bay and its rivers. The TMDL is designed to ensure that all pollution control measures needed to fully restore the Bay and its tidal rivers are in place by 2025, with at least 60 percent of pollution reductions completed by 2017. 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 the general permit for a sediment -related parameter are not eligible for coverage under the 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 accordance with Section I.B.4., control measures shall be protective of water quality standards for impaired waters identified as having impairments for pollutants that may be discharged from the construction activity in the 2012 § 305(b)/303(d) Water Quality Assessment Integrated Report. If applicable, factsheets for waters identified as impaired (along with any associated documentation) can be found in Appendix 10. Stabilization requirements (7 days after final grade is reached), inspection frequency, and application of nutrients for projects with impaired waters shall follow the guidelines set forth within Section I.B.4. 8) Maintenance Maintenance of the erosion and sediment controls and the stormwater management/BMP facilities incorporated into this project must be maintained on a regular basis to assure their continued effectiveness. This includes repairs to all erosion and sediment controls, including cleanout of all sediment basins and stormwater management facilities at the required intervals. Those controls found to be ineffective during routine inspections (as described in the following section) shall be repaired before the next anticipated storm event or as soon as practicable. A more detailed description of the maintenance procedures is contained in the project design plans, Sheet #7 and is incorporated in this Plan by reference. a) Stabilization Stanley Martin at Avinity Estates August 2018 Page 14 a QAVEA company Ensure that stabilization of disturbed areas that 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. Local jurisdictions may have more stringent guidelines (i.e. 7 days) regarding stabilization requirements. 9) Inspections Regular inspections of the construction site shall be performed by "Qualified Personnel". Definition: "Qualified personnel" means a person knowledgeable in the principles and practices of erosion and sediment and stormwater management controls who possesses the skills to assess conditions at the construction site for the operator that could impact stormwater quality and quantity and to assess the effectiveness of any sediment and erosion control measures or stormwater management facilities selected to control the quality and quantity of stormwater discharges from the construction activity. For VSMP authorities this requires the use of a person who holds a certificate of competency from the board in the area of project inspection for ESC and project inspection for SWM or combined administrator for ESC and combined administrator for SWM as defined in 9VAC25-850-10 or a combination of ESC and SWM qualifications from these two areas. The name, phone number, and qualifications of the qualified personnel conducting inspections required by this general permit can be found in the Record of Inspector Certification document within Appendix 6. Inspections shall include (but are not limited to) the review of all disturbed areas, structural and non-structural control measures, identification of any maintenance needs, evaluation of effectiveness in minimizing sediment discharge, proper use of controls, vehicular access points, storage facilities, etc. Receiving waters shall be inspected to ascertain whether control measures are effective in preventing significant impacts. Inspections are to be performed (i) at least every 4 business days; or (ii) at least 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. 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. Areas that have been permanently stabilized can be delineated in the Plan, thus removing the inspection requirements for those areas. If as a result of the inspection, the site conditions and/or control measures are found to have changed, the Plan shall be updated within a period of 7 calendar days. If control measures need to be modified to assure effectiveness or if additional measures are determined to be necessary, Stanley Martin at Avinity Estates August 2018 -- 4 Wetland Page 15 and 5^luiio'ul a QAVEY1. company implementation shall be completed prior to the next anticipated storm event or as soon as practicable. The operator shall implement any corrective action(s) identified as a result of an inspection as soon as practicable but no later than 7 days after discovery or a longer period as approved by the VSMP authority. A report summarizing the inspections and the subsequent maintenance activities must be completed and maintained as part of the Plan. The inspection forms are included in Appendix 4. Required elements include major observations (including information on control measure performance and incidents of non-compliance), and information on the inspecting personnel. If an inspection does not identify any incidents of non-compliance, then the certification statement contained in the inspection form will apply. The inspection report(s) 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. 10) Non -Storm Water Discharges The following table (Table 3) displays non-stormwater discharges from construction activities that are authorized by this general permit when discharged in compliance with the permit: Table 3. Authorized Non-Stormwater Discharges A Discharges from firefighting activities and/or fire hydrant flushings. B Waters used to wash vehicles or equipment. I C Landscape irrigation, or water used to control dust. I D Uncontaminated waterline flushings, air conditioning/compressor condensate, and ground or spring water. E Potable water sources, including uncontaminated waterline flushings. F Routine external building wash down. I G 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 washing). I H Foundation or footing drains where flows are not contaminated with process materials such as solvents. I Uncontaminated excavation dewatering, including dewatering of trenches and excavations. I where soaps, solvents, or detergents have not been used; and where the wash water has been filtered, settled, or similarly treated prior to discharge. Stanley Martin at Avinity Estates C tXTPt1,3"A )-- August 2018 Page 16 a QAVEY1. company REFERENCES Albemarle County Public Facilities Manual, current edition. Virginia Department of Conservation and Recreation.1992. Virginia Erosion and Sediment Control Handbook. Third Edition. Division of Soil and Water Conservation, Virginia Department of Conservation and Recreation. U.S. Department of Environmental Quality. (2017, January 23). Virginia Environmental Geographic Informational Systems: 2014 Impaired Waters Database GIS Applications. Retrieved from http: //www. deq.virginia. gov/mapper_ext/? service=public/2014_adb_aquati clife Stanley Martin at Avinity Estates August2018 Page 17 a QAYEY1. company APPENDIX 1 Storm Water Construction General Permit No. VAR10 COMMONWEALTH of VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY 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 11 - Stormwater Pollution Prevention Plan, and Part III - Conditions Applicable to All VPDES Permits as set forth herein. General Permit No.: VAR10 Page 1 of 23 PART I 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 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: General Permit No.: VAR10 Page 2 of 23 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 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. General Permit No.: VAR10 Page 3 of 23 D. Prohibition of nonstormwater discharges. Except as provided in Parts I A 2, 1 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 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. F. 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: General Permit No.: VAR10 Page 4 of 23 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 is 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; 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 III K. General Permit No.: VAR10 Page 5 of 23 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, if required, 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; (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; General Permit No.: VAR10 Page 6 of 23 (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, 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; (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 General Permit No.: VAR10 Page 7 of 23 (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 an "agreement in lieu of a stormwater management plan" as defined in 9VAC25-870-10 from the VSMP authority, 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 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); General Permit No.: VAR10 Page 8 of 23 (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; (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 4 or Part I B 5. General Permit No.: VAR10 Page 9 of 23 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 g. Measures taken to address any evidence identified as a result of an inspection required under Part 11 F. General Permit No.: VAR10 Page 10 of 23 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 II 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. 2. Inspection schedule. a. Inspections shall be conducted at a frequency of: General Permit No.: VAR10 Page 11 of 23 (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; General Permit No.: VAR10 Page 12 of 23 (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; (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 General Permit No.: VAR10 Page 13 of 23 (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; 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. General Permit No.: VAR10 Page 14 of 23 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). 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. General Permit No.: VAR10 Page 15 of 23 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. 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. General Permit No.: VAR10 Page 16 of 23 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 1 2. 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: 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 III 12. 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. General Permit No.: VAR10 Page 17 of 23 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 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 General Permit No.: VAR10 Page 18 of 23 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 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. General Permit No.: VAR10 Page 19 of 23 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 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. General Permit No.: VAR10 Page 20 of 23 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 U 3 a. 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; 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. General Permit No.: VAR10 Page 21 of 23 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 III 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. 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. General Permit No.: VAR10 Page 22 of 23 DEFINITIONS "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; 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. General Permit No.: VAR10 Page 23 of 23 "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. APPENDIX 2 Submittal Forms: Registration Statement Application Fee Form Notice of Termination Registration Statement General VPDES Permit for Discharges of Stormwater from Construction Activities (VAR10) (Please Type or Print All Information) 1. Construction Activity Operator: (General permit coverage will be issued to this operator. The Certification in Item #12 must be signed by the appropriate person associated with this operator.) Name: Piedmont Neighborhoods LM c/o Stanley Martin Homes Contact: Jeremy Swink Mailing Address: 404 People Place. Suite 303 City: Charlottesville State: VA Zip: 22911 Phone:571-309-5043 Email address (if available): swink'w stanle martin.com Indicate if DEQ may transmit general permit correspondence electronically: Yes ❑x No ❑ 2. Existing General Permit Registration Number (for renewals only): N/A 3. Name and Location of the Construction Activity: Name: Stanley Martin at Avinity Estates Address (if available): City: State: VA Zip: 22932 County (if not located within a City): Albemarle _ Latitude (decimal degrees): 37.9925880 Longitude (decimal degrees):-78.4983330 Name and Location of all Off -site Support Activities to be covered under the general permit: Name: N/A Address (if available):. N/A City: N/A State: N/A Zip: N/A County (if not located within a City): N/A Latitude (decimal degrees): N/A Longitude (decimal degrees): N/A 4. Status of the Construction Activity (check only one): Federal ❑ State ❑ Public ❑ Private ❑x 5. Nature of the Construction Activity (e.g., commercial, industrial, residential, agricultural, oil and gas, etc.): Residential single family attached construction 6. Name of the Receiving Water(s) and Hydrologic Unit Code (HUC): Name: Moores Creek Name: HUC: 020802040402 HUC: 7. If the discharge is through a Municipal Separate Storm Sewer System (MS4), the name of the MS4 operator: Albemarle County 8. Estimated Project Start and Completion Date: Start Date (mm/dd/yyyy): 8/10/2018 Completion Date (mm/dd/yyyy): 4/22/2022 9. Total Land Area of Development (to the nearest one -hundredth acre): 11.88 Estimated Area to be Disturbed (to the nearest one -hundredth acre): 11.71 10. Is the area to be disturbed part of a larger common plan of development or sale? Yes ❑x No ❑ 11. 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 this Registration Statement. By signing this Registration Statement the operator is certifying that the SWPPP has been prepared. 12. 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 a nd 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: Jerem S-wkg Title: Vice Preside t of Land - Piedmont Region Signature: Date: Zn /& (Please sign in IN .This Certification must be signed by the appropriate person associated wi the operator identified in Item #1.) 07/2014 Page 1 of 1 JALA Virginia Stormwater Management Program (VSMP) ' Application for Albemarle County Project Name: Stanley Martin at Avinity Estates (The name should be the same as it appears on plans) Is this an amendment to an approved plan? Yes ❑ No Is this a revision or resubmission for review? Yes ❑ No 0 County File Number: (to be provided by the County for new applications) The following are required elements of new applications %from code section 17-401]. For revisions or amendments, please indicate which items are being amended. Signatures must be provided for any submission. ® A. Signature of the Property Owner for each parcel: (Required with every submission or revision, NOT TO BE SIGNED BY AN AGENT OR CONSULTANT) By signing this application as the owner, I hereby certify that all requirements of these plans and permits will be complied with, and I have the authority to authorize the land disturbing activities and development on the subject property. I hereby grant the County of Albemarle the right to enter upon the property as required to ensure compliance with the approved plans and permits. 91-16E Jeremy Swink Tax Map & Parcel Print Name of Property Owner of Owner Tax Map & Parcel Print Name of Property Owner { Signature of Owner Tax Map & Parcel Print Name of Property Owner Signature of Owner Date Date Tax Map & Parcel Print Name of Property Owner Signature of Owner Date Contact Information for the Owner(s) to receive correspondence: Print Name Jeremy Swink Address 404 People Place, Suite 300 City Charlottesville State VA Zip 22911 Daytime Phone (571) 309-5043 E-mail swinkjw@stanleymartin.com 7/1/14, Revised: 7/10/14, 1/7/14 Page 1 of 2 ® B. All Fees [Code section 17-208] For new or modified plans; Total acres proposed to be disturbed 11.71 Acres to be disturbed Total Fee Fee Due with this Application Fee with Transfer or modification of permit Less than 1 $290 $145 $20 1 and less than 5 $2,700 $1,350 $200 5 and less than 10 $3,400 $1,700 $250 10 and less than 50 $4,500 $2,250 $300 50 and less than 100 $6,100 $3,050 $450 100 and more $9,600 $4,800 $700 For (minor) amendments to an approved plan; $200 per review Variances; $150 (per request) Mitigation Plan; $150 ® C. Registration Statement on the official DEQ form. * D. Erosion and Sediment Control Plan satisfying the requirements of code section 17-402. ® E. Stormwater Management Plan satisfying the requirements of code section 17-403. ® F. Pollution Prevention Plan satisfying the requirements of code section 17-404. ® G. Stormwater Pollution Prevention Plan satisfying the requirements of code section 17-405. ❑ H. Mitigation Plan satisfying the requirements of code section 17-406 for any proposed disturbance of stream buffers. ❑ I. Requested Variations or Exceptions as provided in code sections 17-407 and 408. ❑ J. Construction Record Drawings (as-builts) for any existing facilities in the proposal satisfying the requirements of code section 17-422. Provide 2 copies of'all plans and any supporting documents. Professional seals must have original signatures. Additional information if not provided on plans and documents: Name of a Contact Person for correspondence (usually the plan preparer, consultant or agent) Print Name Tucker Hudgins Address 717 N Courthouse Road, Suite 101 City Richmond State VA Zip 23236 Daytime Phone (804) 955-5213 E-mail thudgins@wetlands.com *When applications and plans are reviewed, but not approved, and a response to comments is not received within 6 months from the date of county comments, the application will be deemed withdrawn. Applications without valid owner's signatures will not be considered valid. FOR OFFICE USE ONLY WPO # _ Fee Ainount $ Date Paid By who? _ Receipt # Ck# By. 7/1/14, Revised: 7/10/14, 1/7/14 Page 2 of 2 DEPARTMENT OF ENVIRONMENTAL QUALITY CONSTRUCTION ACTIVITY OPERATOR PERMIT FEE FORM (Please Type or Print All Information) Instructions: Applicants for a Construction Activity Individual Permit are required to pay permit application fees. Fees are also required for registration for coverage under a Construction Activity General Permit. Fees must be paid when applications for state permit issuance, reissuance, modification or transfer are submitted. Applications will be considered incomplete if the proper fee is not paid and will not be processed until the fee is received. The fee schedule for state permits is included with this form. Fees for state permit issuance, reissuance, maintenance, modification and transfer are included. Once you have determined the fee for the type of application you are submitting, complete this form. The original copy of the form and your check or money order payable to "Treasurer of Virginia" should be mailed to: Department of Environmental Quality Receipts Control P.O. Box 1104 Richmond, VA 23218 A copy of this form and a copy of your check or money order should accompany the permit application (or registration statement). You should retain a copy for your records. Construction Activity Operator: Name: Piedmont Neighborhoods LM Contact: Mailing Address: 404 People Place, Suite 303 City: Charlottesville State: VA Email address (if available): swinkiw(@stanleymartin.com Name and Location of the Construction Activity: Zip: 22911 Phone: (571) 309-5043 Name: Stanley Martin at Avinity Estates City: State: VA Zip: 22932 County: Type of State Permit: ❑ Construction Activity Individual Permit X❑ Construction Activity General Permit (from Fee Schedule) Type of Action: X❑ New Issuance ❑ Reissuance ❑ Maintenance ❑ Modification ❑ Transfer Amount of Fee Submitted (from Fee Schedule): $4,500 Existing General Permit Registration Number (if applicable): FOR DEQ USE ONLY Date: DC #: 09/2014 Page 1 of 1 CONSTRUCTION ACTIVITY PERMIT FEE SCHEDULE A. Individual Permits. The fee for filing a state permit application for a Construction Activity Individual Permit issued by the Board is as follows: (NOTE: Individual permittees pay an annual permit maintenance fee instead of a reapplication fee. The permittee is billed separately by DEQ for the annual permit maintenance fee.) TYPE OF STATE PERMIT ISSUANCE Individual Permit for Discharges from Construction Activities $15,000 B. Registration Statements. The fee for filing a state permit application (registration statement) for coverage under a Construction Activity General Permit issued by the Board, including a state or federal agency that does not administer a project in accordance with approved annual standards and specifications, is as follows: TYPE OF STATE PERMIT ISSUANCE General / Stormwater Management - Small Construction Activity / Land Clearing (Single-family detached residential structures within or outside a common plan of development or sale with land -disturbance $0 acreage less than five acres) General / Stormwater Management - Small Construction Activity / Land Clearing (Areas within common plans of development or sale with land -disturbance acreage less than one acre, except for single-family $290 detached residential structures) General / Stormwater Management - Small Construction Activity / Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than one acre and $2,700 less than five acres) General / Stormwater Management - Large Construction Activity / Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than five acres and $3,400 less than 10 acres) General / Stormwater Management - Large Construction Activity / Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than 10 acres and $4,500 less than 50 acres) General / Stormwater Management - Large Construction Activity / Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than 50 acres and $6,100 less than 100 acres) General / Stormwater Management - Large Construction Activity / Land Clearing (Sites or areas within $9,600 common plans of development or sale with land -disturbance acreage equal to or greater than 100 acres) The fee for filing a state permit application (registration statement) for coverage under a Construction Activity General Permit issued by the Board for a state or federal agency that administers a project in accordance with approved annual standards and specifications is as follows: TYPE OF STATE PERMIT ISSUANCE Construction General / Stormwater Management - Phase I Land Clearing ("Large" Construction Activity - $750 Sites or common plans of development or sale equal to or greater than 5 acres) Construction General / Stormwater Management - Phase II Land Clearing ("Small' Construction Activity - $450 Sites or common plans of development or sale equal to or greater than 1 acre and less than 5 acres) 09/2014 Page 1 of 3 C. State Permit Modification or Transfer Fees. The following fees apply to the modification or transfer of a Construction Activity Individual Permit or a Construction Activity General Permit issued by the Board. The fee assessed shall be based on the total disturbed acreage of the construction activity. In addition to the state permit modification fee, modifications resulting in an increase in total disturbed acreage shall pay the difference in the initial Construction Activity General Permit fee paid and the Construction Activity General Permit fee that would have applied for the total disturbed acreage in Section B above. TYPE OF STATE PERMIT MODIFICATION General / Stormwater Management - Small Construction Activity / Land Clearing (Single-family detached residential structures within or outside a common plan of development or sale with land -disturbance $0 acreage less than five acres where DEQ is the VSMP authority) General / Stormwater Management - Small Construction Activity / Land Clearing (Areas within common plans of development or sale with land disturbance acreage less than one acre, except for single-family $20 detached residential structures) General / Stormwater Management - Small Construction Activity / Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than one and less $200 than five acres) General / Stormwater Management - Large Construction Activity / Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than five acres and $250 less than 10 acres) General / Stormwater Management - Large Construction Activity / Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than 10 acres and $300 less than 50 acres) General / Stormwater Management - Large Construction Activity / Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than 50 acres and $450 less than 100 acres) General / Stormwater Management - Large Construction Activity / Land Clearing (Sites or areas within $700 common plans of development or sale with land -disturbance acreage equal to or greater than 100 acres) Individual Permit for Discharges from Construction Activities $5,000 09/2014 Page 2 of 3 D. State Permit Maintenance Fees. The following annual state permit maintenance fees apply to each state permit identified below, including expired permits that have been administratively continued. No annual state permit maintenance fee is required for coverage under a Construction Activity General Permit for a state or federal agency that administers a project in accordance with approved annual standards and specifications. TYPE OF STATE PERMIT MAINTENANCE General / Stormwater Management - Small Construction Activity / Land Clearing (Single-family detached residential structures within or outside a common plan of development or sale with land -disturbance $0 acreage less than five acres where DEQ is the VSMP authority) General / Stormwater Management — Small Construction Activity/Land Clearing (Areas within common plans of development or sale with land disturbance acreage less than one acre, except for single-family $50 detached residential structures) General / Stormwater Management — Small Construction Activity/Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than one and less $400 than five acres) General / Stormwater Management — Large Construction Activity/Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than five acres and $500 less than 10 acres) General / Stormwater Management — Large Construction Activity/Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than 10 acres and $650 less than 50 acres) General / Stormwater Management — Large Construction Activity/Land Clearing (Sites or areas within common plans of development or sale with land -disturbance acreage equal to or greater than 50 acres and $900 less than 100 acres) General / Stormwater Management — Large Construction Activity/Land Clearing (Sites or areas within $1,400 common plans of development or sale with land -disturbance acreage equal to or greater than 100 acres) Individual Permit for Discharges from Construction Activities $3,000 09/2014 Page 3 of 3 Notice of Termination General VPDES Permit for Discharges of Stormwater from Construction Activities (VAR10) 1. Construction Activity Operator: Name: Contact: Mailing Address: City: Email address (if available (Please Type or Print All Information) State: Zip: Phone: 2. Name and Location of the Construction Activity: (As listed on the Registration Statement.) Name: Address (if available): City: State: Zip: County (if not located within a City): Latitude (decimal degrees): 3. General Permit Registration Number: Longitude (decimal degrees): 4. Reason for Terminating Coverage Under the General Permit: (The operator shall submit a Notice of Termination 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 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 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 subsections B through D above, unless otherwise notified by the VSMP authority or the Department. Termination of authorizations to discharge for the conditions set forth in subsection A above shall be effective upon notification from the Department that the provisions of subsection A have been met or 60 days after submittal of the notice of terminations, whichever occurs first. 5. Permanent Control Measures Installed: (When 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 management technical criteria. Attach a separate list if additional space is needed.) Permanent Control Measure #1 Type of Permanent Control Measure: Date Functional: Address (if available City: State: Zip: County (if not located within a City): Latitude (decimal degrees): Longitude (decimal degrees): Receiving Water: Total Acres Treated: Impervious Acres Treated: 01/2014 Page 1 of Permanent Control Measure #2 Type of Permanent Control Measure: Date Functional: Address (if available): City: County (if not located within a City): Latitude (decimal degrees): Receiving Water: Total Acres Treated: Permanent Control Measure #3 Type of Permanent Control Measure: Date Functional: Address (if available): City: County (if not located within a City): Latitude (decimal degrees): Receiving Water: Total Acres Treated: State: Longitude (decimal degrees): Impervious Acres Treated: State: Longitude (decimal degrees): Impervious Acres Treated: Zip: Zip: 6. Participation in a Regional Stormwater Management Plan: (When applicable, information related to the participation in a regional stormwater management plan. Attach a separate list if additional space is needed.) Regional Stormwater Management Facility Type of Regional Stormwater Management Facility: Address (if available): City: County (if not located within a City): Latitude (decimal degrees): Total Site Acres Treated: State: Longitude (decimal degrees): Impervious Site Acres Treated: Zip: 7. Perpetual Nutrient Credits: (When applicable, information related to perpetual nutrient credits that were acquired in accordance with § 62.1-44.15:35 of the Code of Virginia. Attach a separate list if additional space is needed.) Nonpoint Nutrient Credit Generating Entity Name: Perpetual Nutrient Credits Acquired (lbs/acre/year): 8. 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: Title: Signature: Date: (Please sign in INK. This Certification must be signed by the appropriate person associated with the operator identified in Item #1.) 01 /2014 Page 2 of 2 Instructions for Completing the Notice of Termination General VDPES Permit for Discharges of Stormwater from Construction Activities (VAR10) ,7=I.1=I:7_11 A Notice of Termination must be submitted when an operator no longer wishes to be covered under the General VPDES Permit for Discharges of Stormwater from Construction Activities (VAR10). All Notice of Terminations should be submitted to: Department of Environmental Quality Office of Stormwater Management, 10`" Floor P.O. Box 1105 Richmond, VA 23218 LINE -BY-LINE INSTRUCTIONS Item 1: Construction Activity Operator Information. Provide the legal name (do not use a colloquial name), contact, mailing address, telephone number, and email address (if available) of the construction activity operator that was issued general permit coverage. Item 2: Name and Location of the Construction Activity Information. Provide the official name, street address (if available), city or county (if not located within a City) of the construction activity. Also, provide the latitude and longitude in decimal degrees of the approximate center of the construction activity (e.g., N 37.5000, W 77.5000). NOTE: This information can be obtained from the previously submitted Registration Statement. Item 3: General Permit Registration Number. Provide the existing general permit registration number for the construction activity identified in Item 2. Item 4: Reason for Termination. Indicate the appropriate reason for submitting this Notice of Termination. The Notice of Termination may only be submitted 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 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 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. Item 5: Permanent Control Measures (when applicable). For each on -site and off -site permanent control measure (both structural and non-structural) that was installed to comply with the stormwater management technical criteria provide the following information: a. The type of permanent control measure; 01 /2014 b. The date that the permanent control measure became functional as a post -development stormwater management control; c. The street address (if available), City or County (if not located within a City) of the permanent control measure; d. The latitude and longitude in decimal degrees of the approximate center of the permanent control measure; e. The receiving water of the permanent control measure; and f. The number of total and impervious acres treated by the permanent control measure (to the nearest one -tenth of an acre). Attach a separate list if additional space is needed. Item 6: Participation in a Regional Stormwater Management Plan (when applicable). For each Regional Stormwater Management Facility provide the following information: a. The type of regional facility to which the site contributes; b. The street address (if available), City or County (if not located within a City) of the regional facility; c. The latitude and longitude in decimal degrees of the approximate center of the regional facility; and d. The number of total and impervious site acres treated by the regional facility (to the nearest one -tenth of an acre). Attach a separate list if additional space is needed. Item 7: Perpetual Nutrient Credits (when applicable). Provide 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). Attach a separate list if additional space is needed. Item 8: Certification. A properly authorized individual associated with the operator identified in Item 1 of the Registration Statement is responsible for certifying and signing the Registration Statement. Please sign the Registration Statement in INK. 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: 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 (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 Page 1 of 2 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) A senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. 01 /2014 Page 2 of 2 APPENDIX 3 Record of Land Disturbance & SWPPP Modifications Record of Land Disturbance and SWPPP Modifications The operator (or designee) 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: 1. A record of dates when: a. Major grading activities occur; b. Construction activities temporarily or permanently cease on a portion of the site; and c. Stabilization measures are initiated; 2. Documentation of replaced or modified controls that have been used inappropriately or incorrectly and where modified as soon as possible; 3. Areas that have reached final stabilization and where no further SWPPP or inspection requirements apply; 4. All properties that are no longer under the legal control of the operator, and dates of which operator no longer had legal control; 5. The date of any prohibited discharges, the discharge volume released, and what actions were taken to minimize the impact of the release; 6. Measures taken to prevent the reoccurrence of any prohibited discharge; and 7. Measures taken to address any evidence identified as a result of an inspection required under Part II F. By initialing a SWPPP modification below, you are making the certification found in Part III K of the Permit. Action and Location Start Date / End Date Initial Started mass clearing andgrading in Section 1 of site. 7/1/14 - 1011114 KG Installed perimeter controls in Sections 1-5. 7/1/14 KG Started mass clearing andgrading in Section 3 of site. 8113114 KG Installed Sediment Oasin #1 8/3/14 IT Construction activity done in Section 1 — temporary stabilized. No further inspections needed 10/1/14 Temporarily stabilized stocApile in NE corner of site. 10/1 14 Section 7 of project transferred legal control — as of 10115114 1011JI14 Replacedconcrete washout near site trailer. 1 /2 14 Installed perimeter controls in Sections 4-5 1 12 1 S Storm Water Pollution Prevention Plan Example County, Plan No.12345 Example Job Record of Land Disturbance and SWPPP Modifications The operator (or designee) 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: 1. A record of dates when: a. Major grading activities occur; b. Construction activities temporarily or permanently cease on a portion of the site; and c. Stabilization measures are initiated; 2. Documentation of replaced or modified controls that have been used inappropriately or incorrectly and where modified as soon as possible; 3. Areas that have reached final stabilization and where no further SWPPP or inspection requirements apply; 4. All properties that are no longer under the legal control of the operator, and dates of which operator no longer had legal control; 5. The date of any prohibited discharges, the discharge volume released, and what actions were taken to minimize the impact of the release; 6. Measures taken to prevent the reoccurrence of any prohibited discharge; and 7. Measures taken to address any evidence identified as a result of an inspection required under Part II F. By initialing a SWPPP modification below, you are making the certification found in Part III K of the Permit. Action and Location Start Date / ►nitia►s End Date Storm Water Pollution Prevention Plan Albemarle County Stanley Martin at Avinity Estates Action and Location Start Date / ►nitial End Date Storm Water Pollution Prevention Plan Albemarle County Stanley Martin at Avinity Estates APPENDIX 4 Record of Site Inspections APPENDIX 5 Record of Contractor Certification Contractor Certification Contractors noted below have been trained in pollution prevention practices and are familiar with the procedures and information contained within this SWPPP. Site: Stanley Martin at Avinitv Estates SWPPP Measure Company Name Contact Name Business Address Phone Number General Contractor General Contractor General Contractor E&S Controls Portable Toilets Trash Containers Concrete APPENDIX 6 Record of Inspector Certification Inspector Certification Site: Stanley Martin at Avinity Estates Name: Qualifications: Company: Telephone: Email: Name: Qualifications: Company: Telephone: Email: Name: Qualifications: Company: Telephone: Email: APPENDIX 7 Temporary BMP Location Tracking Each time a temporary BMP (concrete washout, porta John, dumpsters, fuel storage, etc.) is relocated on site, the current location should be denoted in this document. *BMP locations are tracked on the site map/plan located with SWPPP LEGEND LEGEND \„ \�\ \ r �\ / I I ( \ s�r / // / \ �� a3 r / -- LIMITS OF LAND DISTURBANCE s \ \ r2p ` I ( \ / / \ \\\ o / ------ SF SILT FENCE PER VESCH 3.05 R Fv ell DIVERSION DIKE SSF SUPER SILT FENCE PER VESCH 3.05 0 � ■ ■ � BOUNDARY LINE SILT FENCE BB DIVERSION DIKE PER VESCH 3.09 SCOTT R. COLLINS�Z DIRECTION OF FLOW ST SEDIMENT TRAP PER VESCH 3.16 No. 35791 ,� � 653.75 PROPOSED CONTOUR CE CONSTRUCTION ENTRANCE PER VESCH 3.02 F ■ ■ DRAINAGE DIVIDE ��s�IONAL E�G \10, SA ROPOSED SAFETY FENCE CULVERT INLET PROTECTION OP OUTLET PROTECTION PER VESCH 3.18 SWM FOREST & OPEN SPACE PRESERVATION CIP 3.08 CULVERT INLET PROTECTION PER VESCH SHALL REMAIN OUTSIDE LIMITS OF DISTURBANCE SOILS LINE SOIL STABILIZATION MATTING VESCH 3.36 LIMITS OF DISTURBANCE DRAINAGE WAY //7= 11.71 AC. ONCE UPLAND AREAS ARE STABILIZED THE LUBHOUSE, WALLS, AND DRY DETENTION BASIN CAN BE INSTALLED (WITH INSPECTOR APPROVAL) V) z w — z 0 PROPOSED SAFETY FENCE - ---- --- ----- z0 O NSTALL SIGNS "WARNING: AF -- / leer \ �I�` /� ��\`\ \ - a Q O Z 1 3 \ h — �. �\ \ QUICK SAND, KEEP OUT" - � \\ \ PROPOSED 55' EARTHEN - L U SWM�F�CCI Y —\�` \ EMERGENCY SPILLWAY w m o LU LU // / / �V-- � ��ELEV.=496.33 z cn c� Q \ `J \s\ / "TOP OF DAM=497.50 Z 0 Q g <o I El- CID Concrete Washoutz L Ln- LU / >LU a LU w Portable Toilet W IP IP, PROPOSED 18� \FRCP BARREL -- Material Storage =88'; S=0.5% V A ENV IN=488.44 �INV OUT=48§.00 Trash onta*ner \P86P0. III RCP RISER \ \ \ �y� \ \�� A \ \ IP / \ RIM=495.33 Av wVV A \ \ ono ono \ \ I r — —s IP101> to�P L k 1 \ — — SEDIMENT BASIN 1 I \ A \ IP Ora PHASE 11 t6rss i �Or �..' for V _ — 7.95 ACRES \ / \/ Cw=0.75 °Ts� s \ /—Tc=12.6 min. P \ \ \ \ v\ -77 / 1 I \ \ P , \\ �' IP zo— < IP '\\� IN W W LIMITS OF DISTURBANCE / / 9 o — oT's P / / / 3/" / / I 6, \ ' 14 , I / / w ) \ / / =11.84 AC. � / / r � < ko I / o / / \ \ � / l � / I \ `I,w \ / / / QQ 2 tor2F LLi LU s o I / J i r IP s z /\k\> / > J vJ z PROPOSED SILT FENCE W Q J t° \y / OWNSTREAM OF ROADWAY — — _ <° IMPROVEMENTS '/ �t\/ 0.0 y� O LL / S torts BACK OF LOTS SHALL BE CONTROLLED WITH / o� I — TR / / SILT FENCING, YARD DRAINS SHALL REMAIN / /\ / \ / I / _ / _ — z OFFLINE UNTIL UPLAND AREAS ARE STABILIZED / / o / \ / \ I I /\ � •• %� Q o IP IP 0 60 / / / /� - - - / \ V FENC t / / W 1 0 T2a / \ ( \ \ �- / / LIMI S OF DISTURBANCE i i �— — — — — _ , �� i �/ --- � W .85 AC. \ Ul W / \ '/ /�� 0 WALLS SHALL BE �f ♦ / \/ �,,�'\ \ / j-� \\ I W W NSTALLED WITH / / / \�, i /�/ / /-/�2 / ' i / \ I Z C/) U) ..PROPO g��-DE_SAC � � v \ \ I I �g♦j/ l / w � �. � v � w� —w—w— moo .�% / A I f � � _/ — � �/,��-�'(,��E ; ;y —� �_ _ _ � / \ / � �, \ � � � /�/ v v♦ I I / / I w 1 - — _ v ,i / / io i 1 I ,' S �O ' — i — / / \ I / W z Ji' \ \ 1 W Z �_ 1 / I / �� SEDIMENT TRAP 2 PROPOSED SAFETY FENCE r �/ PHASE II 1.31 ACRES \ \ / C 0.75 „ - / \ \ W L]i Tc min. �• 2 SED 8 PROP ! 1 / I O' STONE =8 EIR ELEV.=497.00 TOP OF DAy =498.00 C� / LUNGIE P60L RISER AND A \ / / Z / \ \ V ARREL SHALL BE INSTALLED \ \ \ / \ /10 WITH THE ESC TO SWM CONVERSION / / / \\ �. _ / O / i - GRAPHIC SCALE � J, \ S . — — / / �' / / / / / / � --- N F �I// �� \LU \ o so o ao so 1 zoo V �� / % / A / // / / / � LU z PR6POSED SAFETY FENCE / NSTALL SIGNS "WARNING: (SAD / / \ ( IN FEET � / I I I / JOB NO. �) I I / i j// QUICK SAND, KEEP OUT" / / / / A 092033 1 inch = 60 ft. \ // SCALE ROPOS��ED SAFETYI FENCEG / / — �� _ M FOREST &OPEN SPACE PRESERVATION / � / � \ � 1 60 SW / SHEET NO. �� SHALL REMAIN OUTSIDE LIMITS / / / 1 OF DISTURBANCE / 9 APPENDIX 8 Plan Sheets (Excerpt from overall Project Design Plans) GENERAL NOTES OWNERS.• AVINI TY ESTATES LLC 455 SECOND STREET SE, 57H FLOOR CHARLOTTESVILLE, VA 22902 DEVELOPER: RIVERBEND DEVELOPMENT, INC. 455 SECOND STREET SE, SUITE 400 CHARLOTTESVILLE, VA 22902 ENGINEER: COLLINS ENGINEERING 200 GARRETT ST, SUITE K CHARLOTTESVILLE, VA 22902 TAX MAP NO.: 09100-00-00-016CO 09100-00-00-016EO ZONE: PRD ZONE: PRD DB 4319 PG 247 DB 4571 PG 88 09100-00-00-016AO 09100-00-00-01400 ZONE: PRD ZONE: PRD DB 4571 PG 88 DB 3472 PG 015 TOTAL PROJECT AREA: A VINI TY ES TA TES 09100-00-00-016CO - 2.472 AC. 09100-00-00-016EO - 4.982 AC. 09100-00-00-016AO - 4.432 AC. 11.886 AC. TOTAL ZONING: PRD - PLANNED RESIDENTIAL DEVELOPMENT - ZMA 2013-016 TOP OGRAPH Y.• SURVEY & TOPOGRAPHY PROVIDED BY ROUDABUSH GALE & ASSOCIATES, DATED AUGUST, 2013. TOPO FIELD VERIFIED IN JUNE 2017 DA TUM: NAD 83 FLOODPLAIN: THERE IS NO FLOODPLAIN LOCATED ON THIS SITE. FEMA MAP ID 5100JC0407D & 5100JC0426D DATED FEBRUARY 4, 2005. STORM WA TER MGMT• STORMWATER FOR AVINITY ESTATES WILL BE HANDLED BY A PROPOSED STORMWATER MANAGEMENT FACILITY JUST UPLAND OF THE EXISTING SWM POND. ADDITIONAL A VINI TY ESTA TES STORMWA TER WILL BE TREA TED BY A SECOND SWM FACILITY AT THE SOUTH OF THE SITE. SWM SHALL MEET ALL STATE REGULATIONS REQUIRED WITH THE DEVELOPMENT FIRE & RESCUE. AS REQUIRED, ALL FIRE FLOWS WITHIN THE DEVELOPMENT SHALL BE A MINIMUM OF 1000 GPM AT 20 PSI. ADDITIONALLY, FIRE HYDRANTS SHALL BE PROVIDED ALONG THE STREETS FOR FIRE FIRE PREVENTION AT A MAXIMUM SPACING OF 500 FT PER IRA VEL WA Y. AVINITY ESTATES�I�G ToRIC_HMOND QO TPTE 64 s4 INTERS PIEDMONT VIRGINIA COMMUNITY COLLEGE WPO SOUTHERN PARKWAY PLAN AMENDMENTMILL CREEK MONTICELLO HIGH SCHOOL LAKE REYNOVIA �O Ad/�CALE ELEMENTARY SCHOOL 2J� THIS MILL CREEK 0---PROJECT J yo � SOUTH Q SCOTTSVILLE DISTRICT VICINITY MAP ALBEMARLE COUNTY VIRGINIA „ _ SCALE: 1 = 3000 ° o - PROPOSED USES: SINGLE—FAMILY ATTACHED UNITS & TOWNHOUSE UNITS sz' ,3' I., SINGLE FAMILY ATTACHED UNITS: 51 TOTAL UNITS (A VINI TY ESTATES) _ TOWNHOUSE UNI IS: 51 TOTAL UNI IS (AVINI TY ESTATES) LPR=^TES DENSITY- TOTAL NUMBER OF UNITS PROPOSED: 102 UNITS — PROPOSED DENSITY: 8.58 UNITS/ACRE MAXIMUM ALLOWABLE UNITS WITHIN A VINI TY ESTATES: 102 UNITS r MINIMUM ALLOWABLE UNITS WITHIN A VINI TY ESTATES. 60 UNITS j SI TE AMENI TIES CLUBHOUSE/PA VILION AREA (1, 314 SF; 1,000 SF MIN) TOT LOT (4,000 SF MIN) =j I DOG PARK (10,000 SF MIN) t PASSIVE RECREATION AREA (6,000 SF MIN) ACTIVE RECREATION AREA (13, 622 SF, • 11,500 SF MIN) Note RIGHT - OF- WAY.• 2.27 ACRES *This SWPPP and VAR10 CGP OPEN SPACE.• 2.32 AC OPEN SPACE (A VINI TY I PLA TIED) J.60 AC OPEN SPACE (AVINI TY ESTATES) are associated with 102 (SFA) 5.92 / 21.13 AC TOTAL AVINITY I & ESTATES = 28.0% units LOTS: 6.01 ACRES SETBACKS: FRONT - 6' MIN (WITH VARIATION SUBMITTED TO THE COUNTY) MIN. 18' FROM *Estimated area of disturbance is FRONT OF GARAGE TO BACK OF SIDEWALK SIDE - 5' MIN 11.71 acres and is within the LOD REAR - 10' MIN INTERIOR, 20' MIN WHERE LOTS ARE ADJACENT TO THE PROJE BOUNDARY CLUBHOUSE/PAVILION - 8' MIN FRONT, 5' MIN SIDE, 10 MIN REAR SETBACKS SHALL INCLUDE A 4' FRONT AND REAR ENCROACHMENT OF ALL of this approved plan SETBACKS WITH PORCHES, EAVES, AND OTHER ARCHITECTURAL ELEMENTS OF THE HOMES. SETBACKS SHALL ALSO ALLOW UP TO A 1' SIDE YARD ENCROACHMENT I FOR ARCHITECTURAL ELEMENTS AND OVERHANDS, PROVIDED THAT THE ENCROACHMENTS ARE FIRE RATED PER BUILDING DEPARTMENT REQUIREMENTS - ------ WHEN BUILDING SEPARATION IS REDUCED FROM 10' SETBACKS WERE APPROVED --LL—_.`___ WITH THE BUILDING MODIFICATION WAIVER REQUEST WITH ZMA 2013- 016. i BUILDING HEIGHT 35' MAXIMUM HEIGHT � PARKING: EACH PROPOSED LOT SHALL PROVIDE OFF-STREET PARKING FOR TWO VEHICLES IN ----------------------- — A MINIMUM 18' DEEP DRIVEWAY AND A GARAGE. ADDITIONALLY, ROADWAYS SHALL - - ACCOMMODATE OVERFLOW PARKING ON -STREET WITH ON -STREET PARKING j- BUMPOUTS (JO). TOTAL NUMBER OF UNITS 102 UNITS - TOTAL NUMBER OF OFF-STREET PARKING SPACES PROVIDED: 102 UNITS X 2 SPACES PER UNIT = 204 OFF-STREET PARKING SPACES r�- TOTAL NUMBER OF ON -STREET PARKING SPACES: (1) SPACE PER (4) UNITS REQUIRED: 26 ON -STREET SPACES REQUIRED 1_ TOTAL NUMBER OF ON -STREET PARKING SPACES PROVIDED: 30 BUMPOUT SPACES AN ADDITIONAL (10) PARKING SPACES HAVE BEEN PROVIDED AT THE CLUBHOUSE LL PHASING: THE PROJECT MAY BE COMPLETED WITH A MAXIMUM OF 4 PHASES, AS SHOWN ON I THE ROAD PLANS (IN CONJUNCTION WITH BLOCK PHASING) --------- ------ ------ STREETS: CURB & GUTTER PRIVATE STREETS. THE ACCESS ROADWAY SHALL BE MAINTAINED j BY THE HOA. UTILITIES: SITE SHALL BE SERVED BY PUBLIC WATER AND SEWER ,I -- CONSTRUCTION TRAFFIC: ALL CONSTRUCTION TRAFFIC FOR THE DEVELOPMENT OF AVINITY ESTATES SHALL ENTER THE SITE FROM THE EXISTING DRIVEWAY AT ROUTE 20. DENSI TY. A VINI TY 1. 107 UNI TS/9. 243 AC = 11. 58 UNI TS/AC A VINI TY ES TA TES: 102 UNI TS111. 886 AC = 8.58 UNI TS/AC !I LANDSCAPING: ALL PROPOSED ROADWAYS SHALL HAVE STREET TREES IN ACCORDANCE WITH I ALBEMARLE COUNTY REQUIREMENTS. ALL TREES SHALL BE LOCATED OUTSIDE OF THE ROW WITHIN A 6' WIDE LANDSCAPING AND MAINTENANCE EASEMENT AND ALL STREET TREES SHALL BE MAINTAINED BY THE HOA. i L LIGHTING: NO OUTDOOR STREET LIGHTING IS PROPOSED AT THIS TIME. THE FINAL SITE PLAN SHALL INCLUDE AN OVERALL OUTDOOR LIGHTING PLAN FOR THE PROJECT. - I TRAFFIC GENERA TION: TRIP GENERATION BASED ON I TE TRIP GENERATION MANUAL (87H EDITION) 51 SINGLE FAMILY UNITS (CODE 210) 488 VPD (244 ENTER/244 EXIT) AM PEAK. 38 VPH (10 ENTER/28 EXIT) ! ! O PM PEAK. 52 VPH (32 ENTER/20 EXIT) I, 51 TOWNHOME UNITS (CODE 230) ! j 296 VPD (148 ENTER/148 EXIT) ! i AM PEAK: 22 VPH (4 ENTER/18 EXIT) PM PEAK. 27 VPH (18 ENTER/9 EXI T) TRASH: ALL UNITS SHALL HAVE AN INDIVIDUAL TRASH CONTAINER AND THE HOA SHALL PROVIDE TRASH COLLECTION SERVICES. RESERVOIR WA TERSHED: MOORE'S CREEK WATERSHED AGRICULTURAL -FORESTAL: NONE PLACES OF BURIAL: NONE RETAINING WALL: ALL WALLS AS SHOWN ON THIS PLAN SHEET AND THE GRADING PLAN SHEET SHALL NOT EXCEED 6' IN HEIGHT. AFFORDABLE UNITS: CASH IN LIEU OF AFFORDABLE UNITS WILL BE PROVIDED (1511.): 0.15 X 102 UNITS = CASH FOR 16 UNITS REQUIRED DEGRgyy STREET (VAR. WIDTH PRIV—.,.... MOFFAT STREET (VAR. WIDTH PRIVATE RM) I 1 Wre -1 =00 I i I: i l r l i i / 9 d SHEET LAYOUT SCALE: 1" = 100' NO TES: 1) THIS PROPERTY DOES NOT LIE WITHIN AN AGRICULTURAL AND/OR FORESTAL DISTRICT. 2) THIS PROJECT IS NOT LOCATED WITHIN FLOODPLAIN LIMITS, BASED ON FEMA MAP NUMBER 51OOJC0407D & 5100JC0426D ADOPTED FEBRUARY 4, 2005. 3) EACH LOT AS SHOWN HEREON CONTAINS A BUILDING SITE WHICH MEETS THE REQUIREMENTS OF SECTION 4.2.2(b)1 (18-520) 4) ALL PROPOSED EASEMENTS SHALL BE DEDICATED TO PUBLIC USE. 5) STREET TREES SHALL BE PROVIDED ALONG ALL THE PUBLIC STREETS 40' O.C. IN ACCORDANCE WITH VDOT AND ALBEMARLE COUNTY STANDARDS. General construction notes for Stormwater Management plans 1. All dams and constructed fill to be within 95% of maximum dry density and 2% of optimum moisture content. All fill material to be approved by a geotechnical engineer. A geotechnical engineer is to be present during construction of dams. 2. Pipe and riserjoints are to be watertight within stormwater management facilities. 3. For temporary sediment traps or basins which are to be converted to permanent stormwater management facilities; conversion is not to take place until the site is stabilized, and permission has been obtained from the County erosion control inspector. WPO PLAN SHEET LIST Sheet Number Sheet Title 1 COVER SHEET 2 EXISTING CONDITIONS 3 GRADING PLAN 4 GRADING PLAN 5 STORMWATER MANAGEMENT PLAN 6 STORMWATER MANAGEMENT DETAILS 7 EROSION & SEDIMENT CONTROL NARRATIVE & DETAILS 8 EROSION & SEDIMENT CONTROL PLAN PHASE 1 9 EROSION & SEDIMENT CONTROL PLAN PHASE 11 10 EROSION & SEDIMENT CONTROL CALCULATIONS TOTAL 10 PAGES Avinity II Range of Residential Uses Rezoning Allowable Uses Proposed Uses Block Townhome (min -max) Single Family Attached/Detached (min -max) Proposed Townhouse Units Proposed Single Family Attache d/Detache A 1 0-20 0-9 12 5 B 0-30 0-15 15 8 C 0-30 0-15 14 13 D 0-34 12-32 10 25 TOTAL 0-122 12-71 51 51 TOTAL U N ITS: 102 1) Within Avinity I, a 24unit condo building is proposed to be eliminated and in its place, a maximum of (8) townhouse units are proposed. 2) The overall density (number of units) for Avinity I shall decrease from 124 units to 106-108 units with the approval of this rezoning. The original proposed condominium building shall be replaced with (6) - (8) townhouse units. 3) The proposed minimum number of units within Avinity II shall be 60 units with a maximum number of 102 units. The density shall range between 5 DU/AC and 10 DU/AC. � �H 0� � SCOTT R. COLLINS'- No. 35'791 ZONAL E� z z O LU � a J Q O U w m z Z 0 Z D J U O _ � Q � re' a 0 H > LU � w H ry W Ce 00 00 00 w QO\1 M Lu CY) Z `� N CY) WC:) N (N W ; ZLLi J J V U)W H ZO J Q W U U I H ZU) _w J w J U) O olf w Q U C:) 0 N III- LU w 2 N) 0. \W O U LU w rn O w � a JOB NO. 092033 SCALE AS NOTED SHEET NO. 1 O �J �J ho U � o ° � o U o V) ° a X 0 z� O o pi C E ° L ° o > n o LOJj 5 LOT �. / EXISTING SANITARY SEWER as 4°� LOT/ - ABANDONED IN PLACE C(UNo. 0LOT 5 EXISTING WATERLINE9L� ABANDONED IN PLACE kOr _— / 51Lor '',,,,!! EXISTING SANITARY52 53 fx EXISTING SWM POND LLINS'�653 LoSEWER 55Lor / FOR AVINITY Ise i- EXISTING WATERLINE 91w E XIS'f N % T 4 EXISTING MANAGED \ 91454=E- STEEP SLOPES TO BE O ALL/ w _ - /) / - - so TMP 91-15 9j 66' IMPACTED (TYP.) W JASPER L. & MALLIE P. HAYNES 3 I I C\ / / = o T� \ `" \ - _ D.B. 859 P. 143 I w \ w` / D. B. 619 P. 368 PLAT / ss �- 4yy 3 LOT \\ ` -_ 0 /` 94 I _ 49, 34 IO IN y Q LO I— k /k / - L Lr I /F AVON PROP E LLC I I - - 3- - - N / I I I i ll�lllllll�i�ii� ' -�� _� v_ TMP-- 91 16C vvv `_� w - - D.B. 3991 \ AVINITY ESTATES LLC _ _ _\ 0. 3 z D.B. 4730-296 c V ENCE �� I I W hfH,_loP U d6w Lu oo L im > w \ �\ \ / Z Q 3 ----- o TMP 91-16D w_ o SCOTTSVILLE RD. HOLDINGS LLC. \ w \ s38, 0 w L _ - C/0 KAPPA SIG FRATERNITY \ \ \ \ \ s8' \ / /� O I / — D.B. 3257 P. 702 7 v 1 20 �s E , i w z o D.B. 550 P. 608 PLA T / \ w / Ln c > Lu LU53 .99 aee ❑ A � \ A \ TMP 91-1 II / 78T � L T I _ _ �� 0� � \ \ _ / SCOTTSVILLE RD. HOLDINGS LLC. 4 .9�3 79 $� Lor OT / 75 - _ -� ,� � 6+CC 5+83' -� \ V l IC/O KAPPA SIG P.FRATERNITY 81 $ LOT I � V � 2 O� 1 / / � -- $s � 80°T °r Lor �� \ � D.B. 1080 P. 173 PLAT _/ � i� EXISTING WATERLINE EXISTING SANITARY 56 SEWER 06 _ o J l _ I / o c� (0 0 —A N N �/ / 471. D.BM2108 MOSS / \ " P. 54 / �� / l �� 15 D. B. 1556 P. 710 / I T P I I W.B. 74 /7 PROPERTY BOUNDARY I w /� L9 Z cy) 41 / l ,S� / �/ cyi /o EXISTING PARKING LOT � TMP 90-35D j � N/F HYDRAULIC SAND COMPANY INC. TMP 91-16E D.B. 862 P. 200 N/F AVINITY ESTATES, LLCto D.B. 4571 P. 88 k EXISTING KAPPA SIGMA HEADQUARTERS BLDG. I y � �Q ��/ c:) -- / - EXISTING 8" SANITARY /i/ -- - - �� SEWER LINE // Lu EXISTING WATERLINE z Ilili I �� Li w \ / SANITARY, SEWER ESMT. 3 \ l O , d�°� / J CC U) TMP 91-16A1+ D.B. 2940, PG. 530 / / �Q� i �� % / J G z N/F SCOTTSVILLE ROAD HOLDING CONSTRUCTION ESMT. I I �� — S LLC � � � � Q TMP 90-358 D.B. 599 P. 239 D.B. 4564, PG. 258 N/F SOUTHSIDE CHURCH OF GOD i D. B. 839 P. 32 - — N eF 84. 6 �/ � J 0 EXISTING BUILDINGS TO BE DEMOLISHED (TYP). \ \ I / TO 488. PRIOR TO THE DEMOLITION OF THE MAIN uy I VER 484.8 N I HOUSE AND ITS ASSOCIATED STRUCTURES, � THE DEVELOPER SHALL DOCUMENT THE STRUCTURES WITH LABELED PHOTOGRAPHS. DOCUMENTATION SHALL INCLUDE / ` � % � / � � � U — PHOTOGRAPHS SHOWING ALL SIDES OF EACH / \ / j / / / STRUCTURE, CONTEXT OF THE SITE, A SKETCH �5< \ J / J S62'00'02"E 418.99' w (n / S61'57'53"E 435.00' / FLOORPLAN AND, A SKETCH PLAN OF THE SITE S61'5753 E F i — r / � / / / oH� / IDENTFYING THE PHOTO LOCATIONS SHOWN 73.46' \ �HE 6HEHE / / / EXISTING COMMERCIAL ENTRANCE I w Q X i AS PROVIDED. THIS DOCUMENTATION SHALL \ HE /485.1TO KAPRA SIGMA PROPERTY wBE SUBMITTED TO ALBEMARLE COUNTY -+ / z / 1�rHE . I O PROPERTY �� — U) COMMUNITY DEVELOPMENT PRIOR TO THE I EXISTING OVERHEAD / . REQUEST FOR A DEMOLITION PERMIT FOR ANY I 5 \ POWERLINE TO BE I \ V \ GREEN / U) w OF THE STRUCTURES. REROUTED ,8• / % / 11 I I \ \ \ ERGREEN / `14Lo O� �� EXISTING OVERHEAD GREEN ui I 0 M � EXISTING BUILDING S \ POWERLINE & ESMT. w I o �? TO BE DEMOLISHED I ERGR EN / I e• / z / > rn (TYP.) \ N N \ \ \ \ \ I I I \ RGR� / 12" cn GRE EVE EN VERGR E RGREE I / GRAPHIC CAL CR 6' EEN / 50 0 25 50 100 200 w 04 Of VERGR TMP 91-16A / / �/ / / / 04 I 0 lcl� N/F AVINITY ESTATES, LLC I (4)4/EN \ ( IN FEE ) Q O � / �o / D.B. 4571 P. 88 I / �� / /zz1 i ch = 5 ft. 1 RGREEN / I G 0 CD �� [/ o p/ NOTES: o RGREEN (y u \ \ \ 1. THIS PROJECT IS NOT LOCATED WITHIN FLOODPLAIN LIMITS, BASED ON FEMA MAP w - ERGRE N 4 fl .02 0 w 2' , "W. 8 4 ' (:1 �� ,. �� V J �18'� / NUMBER 51003CO407D & 51003CO426D ADOPTED FEBRUARY 4, 2005. a n 25' Row RARDWDGD ( ( R�J lop 2. TOPOGRAPHY & BOUNDARY INFORMATION PROVIDED BY ROUDABUSH GALE & JOB No. / HARD 3(3)4�� 4.. 3.. 9 4' .. 3�� O I EV RGREEN EVER REEN EVERGR- N EVER H WOOD EV RGREEN6 (3)3' B-'PNE )0" (y 16" ' R 4" _ DWO R - - °''EVERGREE" (6""" ,3)a'EVERGREENZ. -- � 490. ASSOCIATES. THE TOPOGRAPHY HAS BEEN FIELD VERIFIED IN JUNE, 2014. EX. ROW Ln E EVER EEN BBLE DR VE 3. MANAGED STEEP SLOPES EXIST AS SHOWN ON THE PROPERTY. 092033 25' ROW D.B. 317-552 18 I X \ c 4. NO WPO STREAM BUFFER ON THE SUBJECT PROPERTY. SCALE IST ) -11 5. THIS PROPERTY IS NOT LOCATED WITHIN A DAM INUNDATION ZONE. 1 = 50' X PHONE EXISTING GRAVEL DRIVEWAY AND / SEEP P2PES TO BE AMP 91-16B PED ACCESS TO PARCELS 90-35F, 91-16B, l PACTE (TYP.) i N/F BERRY l l SHEET NO. D.B. 402 P. 38 / I 9 X AND 91-16A - � 2 / I / / NOTES: 1. CONTRACTOR SHALL VERIFY ALL TIE-IN ROAD CONNECTIONS FOR AVINITY ESTATES ROADS TO ANY ROAD PLTH OF EXISTING OR UNDER CONSTRUCTION. CONTRACTOR IS RESPONSIBLE FOR NOTIFYING THE ENGINEER OF ANY \ = \ IAN"E DISCREPANCIES BETWEEN THE EXISTING ROADS AND/OR CURB AND GUTTER AND THE PROPOSED ROADS, CURB & GUTTER. CONTRACTOR SHALL CONTACT ENGINEER TO INSPECT CURB AND ROADWAY TIE-INS TO EXISTING ROADS, PRIOR TO ANY CONCRETE OR PAVEMENT BEING PLACED. ■ 6 w- w� w l °�� / SCOTT R. COLLINS� 2. CONTRACTOR SHALL VERIFY CURB ELEVATIONS ADJACENT TO THE SANITARY SEWER MANHOLES TO ENSURE No. 35791 .11 THAT MANHOLE TOPS ARE CONSISTENT WITH THE ADJACENT PROPOSED CURB ELEVATIONS. w / 3. CONTRACTOR SHALL PROVIDE ENGINEER SURVEY WORKSHEETS OF ALL ROADWAYS, PARKING LOTS, ALLEYS, _ / MANHOLE TOPS AND DRAINAGE STRUCTURES PRIOR TO INSTALLATION OF CURBING, DRAINAGE, OR UTILITIES ■ EXTEND 10' WIDE TURN LANE �sS / TO COLLINS ENGINEERING FOR REVIEW AND APPROVAL PRIOR TO CONSTRUCTION. COLLINS ENGINEERING ■ / _� w� / AT 2% FROM EXISTING GRADE (v / / / / IDNAL E / SHALL VERIFY ALL SURVEY SHEETS TO ENSURE POSITIVE DRAINAGE AND PROPER ELEVATIONS FOR 3 w CONSTRUCTION. / / �A ��w� w� w w l / TIE GRADE IN WITHIN EX. ROWLU 4. ALL PROPOSED SANITARY AND WATERLINE EASEMENTS SHALL BE DEDICATED TO ACSA FOR PUBLIC USE. MoH T SWIM FOREST AND OPEN - / �� / / / SPACE PRESERVATION �/ / �� - / �- M vM�o v wv / /Lu / 54 LOT / REPLACE EXISTING 4-8'� �I�LVER \ v ��wv v / H � / __55 LOT / / / / I WITH 28 LF 48" RCP CULVERT �� ° " � - / / � z W u 56 s \ o O � / u g O Lu m z of Lu / / / / 0 � J °�, �PROPO /PA/VED Pbk z Ov Q EME� ACCES OAD Z o w w a m j z Lu p Q Lu w / \ si / / Lu Lu ORTIOi�T / _ _ A PR_ dpo' E AVED w _ _ _ _-=FjV1ERGEN Y A OAD ° - � _ / \ � Lu � E EN-T EASE-M ) IN- � \ 00g vv _ 00 00 00 Lu Q n O\1 M j:) � r14 r EXISTING MANAGED STEEP SLOPES _ _w - l�� \ - - ■ J I / FACILITY FOR ` ° PROPOSED --GRAVEL PORTION AVINITY ESTATES s w- -__- _w-\4�EMERGENCY-ACCESS RRA --/(P) 6' SEGMENTED / RETAINING WALL -- ---- - - � C`7 (P) 6' SEGMENTED -- \ -�_\ w- w- LL, / I _� Lu�° CV RETAINING WALL \ \\- _ EX SWM FACILITY /\ D vvv �Go NOTE: THE EXISTING MANAGED CRITICAL SLOPES \ -�' ■ FOR AVINITY I �� / %' STE / IN THIS AREA THAT ARE PROPOSED TO BE co 1 I - - - I DISTURBED SHALL BE GRADED IN ACCORDANCE \ ■ WITH THE RECENTLY APPROVED STEEP SLOPES /Lu , ■ PROPOSED ORDINANCE. AREA- TOT LOT "PATIO CLUBHO - Zw N USE - - I , O --,(Ppl SE / / - _ _ _-- - FE 6.00 RRFACILITY FILTE _ _ I \ (P) VAR. WIDTH PRIVATE STORMWATER MANAGEMENT /RET I / _ - �- _ _ FA ACCESS AND MAINTENANCE EASEMENT \ U ■ CV SWALE � \ / Lu FILTEI RABIOSCAPEVAULT \ ■ ''' N - D ` ,_A YD WIDE CURB T WI� H 8' LONG FLANKING Q C) ----_ L v - JCT / / / / o v SIDEWALK'TRAN ITIONSON EITHER SIDE FOR EASY \PEDESTRIAN Tk2AN TION.\CURB OPENING TO w ALLOW THE FIRST FL H TO DRAIN TO THELI A PROPOSED`OFFLINE FIL ERRA BfQSCAPE VAULT. ST °� o_ o0000o a 0 22 SHALL SERV z AS THE BYPASS INLET FOR LARGER �BYD STQRMS�SEE SWA/I PLAN F ADDITIONAL DETAILS �� i a z IN ININ- / / - A_ , CAD \ \ D YD v W D � J ININ - _ 1 C'� LOT _ T61 I / O � _ / - - \ FFE=52g` � I � � � J GAR=528.Z I I I_ _j 0 z c 528.6� D_ T III - v v v II L01 - v 7 FFE�527.�7 G�=52 ..3 / I FFE=529.5� _ X,. F 527. 3 1 I S 7 3 GAR=528.50 1 I, �� 3 LOT 60 i \ \- 1 V 1 L.L \, I 11 ❑ / / 6% LOBI ..FFE=5\0.33 I 1 I I I W ® I - - -- / �I I 1 .17 I GAR=530 / 6.1i 530.00 GAR=53 .001 - / � I I 1 .33 1 \ I I LOT1 I \ v � I L�5 T z°I/=-' �U�I E�YDoa°W �/ Ij GAR=S 9.17 1 I 530.00 I =_- \ .7 ,FF�.6 7 1.5% I 5f29.3 7% 52 . 3 1532.00 --I - LOT 59 l - ��U I I �EXIS ING�MANAGE 28B Y� / / 5 9.33 7/7� 7. Fu o � - -I I I GAR=531.67 11 I .3� FFE=531.�7 I W / �TE P SLOPES I - / �I FF=30..8 01 .3;_ .05 531.3� GAR=5298 55GAR=531 I CO I / / ■��-/ l-�-1 / -■ �■- /v/ �/\ /\ \�/// // �■// � / /I l- / I■ II / ■I/I� �I I -I -- I�■ ■��-� ��- /�I I /I I I - I II I II/ I -1 / //I I II / / // I /I I/ I - /I / I Ii_//=L /_ /O -/GFL_ A /-�TT 46-1/ .555_ / 3 . - 3 /_ .- /4-/0- A- // /D /- / //_ -_� /.-.4 I ///.2 / 0 /D/ . °o I I3 I3 � 3 s 5 I I.I8E 34 2 .I775%_3_30 7157 FA3EG.-GFFA6'aERF9 =/-FO E5-343F-..a4-1-- LOT 3 1II1 1 I I I F❑�FII FER-jEA-_- -I 5--33- --..3-3 GAR-53300 I �\ \ , / / / / / J W A=3 .33 =S32.1 L�5 Lu / 31./7 I LOT 1I 5-GAR-531.1 532.6FE_3.67LO 65 5io 0.8533.33 R=533.3 3 GAR=534 (P) 4'SEGMENTED / LOT QLOT AE RETAINING WALL /534.0053 FYP GFE/533�7 7 53/.3.3 3 66 534.67 FF=57 I3 8 .4D GAR=53635.0028C YD 1❑ 1 I O8GAR=534.67W •7 .1% 32.83 53 6.00 F_T36 7 5.3 9.7� 1 537.33 G�DL�� 3 F CD GA I 1- 0 FFE -7W-W-w C�~V G=3750L T56 w E539.67 Izi----Ii GRAPHIC wLQ68 o .9E 40B YD E= =539.33 =n G30 0 15 31 0 60 120 30B No. 540.50 LOT96GAR-541.00 541.00 092033 7 3. 9 -4371 7� LOT MY FEET SCALE541.00 5 g GAR=543.3 FFE-S 33 inch 30 ft 1"-30'// I 3 `L542.0o ( IN FFE5OT95=.50 1 GA=41.50 54354 0MATCHLINE 2 - SEE NEXT SHEET SHEET No./ 1 ■■�■■�■■�■■�1■7 70 3 541.7 -- J / I I / I / 1 GAR-5 530.00 FF�=52�.67 - � . / ,` 9.17 I � ��-- 1.5% - �/ �H 0�' 1 / 1 / G�R=5�9.3� � 2�.7% 52 � 63 � � I I IFF�� 00-�-I - LOT�59 ' � � 3 �� ,� I CRAP IC SCALE1 EXIStE G MANAGE � � I 5 9.33 7/7% 7. � . � I I I IGAR=531.67 FFE_ � PL PE `-28B Y � / / � �_ -- I I LOT I��3% 531.� 7 I � I � �OS _ / FFE=530.8 I 01 30.05 531.33 GAR=531. 3 GAR=529.8 531.33 53 .6 I \ I \ I 3o I o 3o so 1�zo I/ � / / 4 / / SCOTT R. COLLINS� l j LOT 3 / ��529.50 GAR=S 3.33 _ � � I u No. 35791 � /FFE 531. �7 /_�'�- I 33.00 IN EET / ��E=532. I LOT 100 � LOT 58 � ( ) �o� GAR= 53 .33 / � / �, � ° � I / � I 532.67 3.831. � °° 1 1 h = 50 ft. �AR�533 i c 5 1.3 /9.2 0 5 2 GAR=531.11 5% FE= 533.E 7/ / J , �ssl ONAL E�� y530.8�0 65 ❑IEEE=S��g---- ~�533.33 .331 � I i / - I I GAR=534.33 \ (P) 4 SEGMENTED _ L / / � I FFE=5,,�3. I I � I LOT g � --_ _ I � I \ RETAINING WALL / F OT/4 GA -53 .5 534.00 53 .4 7 = ❑ F YD 1 V / I FFE /533.67 / .7 G -_ 3.3 LOT 66 8 D FFE=536.67 --I 4 5 .1 534.67 FF =535 /=53y3.33 53 .33 9.4% 5 1D / % 532!7 GAR=536 .00 \ 28C YD / GA'R= � / 7 ❑ I I LOT 8 - 534.671 I I / - - 532.83 I 536.00 53 _2 �I X \ / L T5 .1% L 6 4.0� / / FF �535.67 / 5 _ 7 ❑I I ° -- I / / 1 M 33 9.7� 5 3. FFE-534.-� 4� , � R=535.3'S / IL GA_R-3.1 LOT537.33 _ G �p �� W W W (� / / I I FFE-4.6 - - 3 YDI -5 � w L T 56 / z� .4 L0=537.50I - 13 .2% FEE S 9-67 I \ \ I 3 I I w O I / / z U I � � I I / -__-- 537.17 68 I IFFE=541.67 5� .9 �39.33 GAR=539.33 I I I � � � / / � 0 g 406 YD 6 / 40A�D / 8% IGAR=541.33 I \ I�eT4 _ / F1./33 - I FF'E=540.50 I❑ I LOT 96 --- _ GAR=5�1.00 A -5 9.56 541.00 5 .3 / ----- Ln ------ ---- �� / w z z w / / 7 LOT 69 a1 - / o o I I / 541.00 /9.4 15 g, I 4% 539.17 3 C FFE=543.67 --I 7% LOT H YD i / z U Q FFE- ( I o GAR=543.33 � \ -5 .33 , , Z Q w w 540.8 542.00 GAR=S - 001 I I I MATCHLINE 2- SEE PREVIOUS SHEET I I 3 / O a m AR=541.50I \ 543.00 542 > z p Q 4 I w J-� I /L T 7 / I 54 70 I IFFE= -'-_ _ - _ _ � � ° r- _ - I I � � � � / / F 8% 1.17 545.67 \ --- I w a 544i(j0 GAR=545,�3 �� I \ I > o / GAR-5 3.6 / _--- 3 / w I / .�43.67 5.3 �. I FFE=544.5 I LOT 94 V LOT 54 L„ 54 .1 1. FFE-544.3 \ , / GAR=543.51 545.OP % / i / _ - 8 LO 71 _- _ 4.2 .65 544.00 GAR=54 w - -- f E=547 ---_ I 4.0� / � ° 43-`1-7� �� I � � � I - - --- - 5--- - - ----- I / LOT a - �I A159 7.33 - _ - � I I I ui FFE�46.6 7 - g � 3 545.17 I❑ � I I LOT 93 .6� 3 , , 547.00 54 I G�=546.3 / 6 � � � .8% LOB 72 2D D ❑ j - 54�.35 �546.00 FF�OT $$ I 40C YD / 546.33 /1.7% 46 5 i " ❑ � � ---� _- � GA 546.33 I I I / �-546.001 / ►� i LOT 9 / / i iF 0549 s 7 8.4 \ I / / GAR- 3 I FFE�48.6 7 548.33 2.0 •0 _ = 549_33 I � � _ _ FFE= 550.00 II I / �AR-548.33 / GAR=549.671 - I YD .2 L I I / 2% 9>3 \-- - ❑ I I I I AR-552.33 \ LOT5? - _ o Lu / FFE 552.00 I OT 91 A FF / / Q r� Q1 M 7.90 I I � N N � E=552.\33 I � � � � o � � � ---__ -- 3 .2 552.00 55 .2 4 552 00 �AR=552.(70 I I I / I LOT 74 � ❑I _ � � 3 5 4 � f 36B YD _ �I 6% 551.33 FFE- �SMT- LOT 10 /36A j D � I I -55q467_ _ _I 4.4-542.�61 I \IGAR=554.33 I*OT 0 p I I I 55 .0 5s .o /�- \( o I I / I O 554.06 6.6 5 .2 LOT 75 FFE OT 51 /- ---� � - ❑ _- - - / 553.33 I ❑I FF _- - - - 4.7 � � I - 55�-. 33 I 2% - IGA 556.67 -I .� 554.0 GAR=554 I / / - --- / / / o I I - -FFE=556.'❑ L-556.33 0 BSMT=54�0 1 I\ I -- ----- ----- 111 I = 555.6� I I I LOT 556.00 55 •6 0 4. 6I C`7 FFE=557.33 .2 LO 7 ! - 7.8 Ln I / / / i l � 1 GAR=557.00 -5 5- 5 .•° � � �.3% 555.33 � I � � IFFE=557.33 --I � _ I LOT / / o� C'7 1 _ 67 6.5 4 5 0 556.67 - 1 � � IGAR=557. 0 I \ •5% FFLOT50 1 I � � \ LOT g �556.33 I I \ �/ / / o�� / �56.00 GAR-556.00 I I I 5�j / 14 o% LO � 77 3 I I 1 \ 5�6.67 � � � a � . � � .1 BS - 36�YD / LOT 12 I FFE=557.3 I ❑I - - _ 1 I MT 546.46 I \ �/ �� C`M FFE= __ I 559 _GAR= - 5 • GAR=559.0 � \ � I LC�7" 556.�7 55 6 � 8.4% 1 5.4 55.6 57.33 / 558.E 2.0% 1 - - - - GFE�557.33 OT49 I �' I / % \ �/ / / -AR=557_00 _ _ I kh FFE=561. I I 557.6� FF --W-W-w-w-w- / I GAR-560.67� E - GAR=557 �3 IVATE ST RMWATEP/ NT Q / 5 .5 78 \ - - BS T=547 ACCESS AND MAINTENAN�E/SEMENT LOT 13 .6� 801 (P) 4' SEGMENTED I I FFE=561. 560.E 2.2% 0 _� 560.33 ❑ FFE 556.83 �I - - �I I 42F j1(D ( i IN 42G YD (�) 2 6 SF�GME TED� / W RETAINING WALL �I GAR= FIFE 64.OI GAR=556.50 _ - I 4 I YD / \ \ / i �EEYAIN�WA Ls'� / / / / / ' N 00 GAR=562.00 2nd F=566.70 e 42H YD / / / 42E ° 36C YD - I I I LOT 6 55.6 - - - - - - - - - - > > i Q Q \ / I 56 .2 LO 79 556.1 8.7� 36DYD / -- .4% 1 ❑ - _ , 561.67 ❑ FFE 556.17 - / =PLUNZ NC/ �� / - ! - - - - - - I FFE=563�67 6 .6 GAR-555.83 I - z 2 // r w W r GAR�63.33 / I I 2nd F=566.04 55 6 \ ❑❑ I - - - 56 .5 LO 80 LOT 85 9.5% IF III �I I F / - Q .8% 563. 0 I 555.50 // /° A Q p I ❑� ❑❑ - ❑ FFE=565.0❑ 2.5 FFE-�54.83 I � I � II � I / I / II / / � II I °. � ✓ / � ❑ I I of i❑ GAR- 4.50 LOT 4�t ILOT 47 I / / \°'� \/ I / I > Q 19 III LOT 18 L T 17 AR=564.6 2nd F =564.03 I - L T 46 LOT 4�5 / / � Z L ,2 L T 15 ILOT 14 I I 55 .7 \ FF .37 t-546. 0 F -544,03 EFq-541. 6 I iOT414 LOT 43 / II \ �- \ \ / W I I FFE I I � LOT 16 p I�81LOT 4 � - � � / i J • L I 1% _ _ � 56 .5\ Lp12 \° EEE FFE I FFE I I 554.17 AR-54 .04 - A =543. 0 GAR-541.03 I FF -53 .75 = I / \� \ / FFE I FFE A - 546. 7 FFE 34.7 6 6.4 /5 / 65.0 566.' 4 68.0 68. 7 4.2 0 564.33 34 D \ ❑I - I G R=5 6.42 / =53 08 AR II I I I 568.OI 568. 0 I ° < � I 55 5 5 .4 I � GAR 534.42 AR I❑ 5.5 I I l A =531. O �n GAR AR � 1 66.OI 566.� 1 67.71 / GAR �' GAR 5 3.9 565.00 V 6 .0 L-T 437 l o i 64.7 I 67. 4 1568. 7 .1 % I I I I � I h \� / / � / V 567.7 567.7 _ 1 O \ \ I I / 1 J 564.4 567. 567.41I 567.4 L T 8 I I O a GAR-553.83 I I / -\ 567. 567.7 FFE=565.6 I I 2nd=564.04Al � � � II �I J I L Z I = 549 �04 546! 37 54 70 \ \ I ° GAR-565.3 � \ 541.03 \ 5 4.42 \ \ I / / \ Q 1536.42 5 1.75 `I / 6. I 3.8/% 3.6% I� I / 7. \ / I 5 360 I o \ / 56 2 5 6 o a \ 1 5 .6 5 3 6. 2 4.0% 4.1 % � .7 4 0 4.2 U \ \ I 54 7 4 1 53 4 5 .5 53 \ \ + V..� W W W W W W W/IO RE T W\ C� / - oc R. I DT RI A W W W a+ o _ W W \ / �\ / / y W oW W W W W W W W W W W I ul LLI I 566.58 5 65 ° 566.26 L\ 62_8 6 0 54. 5 2. e o s o I/ / I I �/ / D W 4 - 6 5/ 6.6% 5.6% 5.2% / 6% 3.9� 3% 34% 1.1% 1 2.0% 7 a 54 0. 0 53 e 35. 52 r� G 56 .77 567.20 I 563.67 559.67 \ 4.2% - /- Z. 3 0 6.1% 7 0 J 567.77 I 561.67 554.75 50A / / / / I , I� 552.75 �� / I -III � I I � 148.09 I I54 .00 `� � w 41. 7 539. 536.33 32. 0 30.0(� 5�.00 �}� / r o11 8.3 0 � - I / 'I I / I � I � III I � III F� I I II �I 414A � 66.1 1566.8 / I / I /I / / I 565.5 LOT 25 SOT 26 / r / / L T 2� LOT 3 LO 24 FFE FFE \ / / / LOT 21 F E F E I L T 28 LOT 29 LOT 30 LOT 3 LOT 27 - - - / / I r / / C� / FF 568.10 567.53 L T 31 OT 33� OT 35 LOT 36 LOT 37 SOT �T 39/ L0�40 OT 4 4 A r I 5 50 5 8.10 GAR / II F�-564.00 FE-562.00 F�E-56000' F -555.0 FE-5�3.09 E-551. 9 FF=548.42 LOT{�4 / / / 5 GAR � FEE-543.33 FE 542. 0 F -539. 3 FE� 536.E FF =53 3 /II _ / GAR I GAR GAR G R I 567.87 567.20 R=563.67 AR4561.67 AR=559.67 GAVE=554.7 AR=5�2.75 I �R=550.7\5 III GA =548,0 BAR=54h 00 A -541. 7 A -539 00 =536. 3 G� �53 0 IF E=53�.33 FE _ 28. 3 II FF -5 .33 �/ 5�7.87 -- �R /3 p - - 565.83 566.501I 567.17 ICI \ II (P) VAR. WI TH / �T 5 4 / i / %\ I I I I I I � I � I � I GAR= 30.0 II GAR .00 AR- 26.00 I/ / 4 II - � II A PRIVATE STORM � � / / � � �� BSM� 52Q/4 I B�MT- 18. S�� 51�C.4�, t rr o l l � � ❑0 ❑ ❑ I �I \II � II I I � I / / � � / \ � �/ ❑ ❑ \ \ I �/ Q =7_�_ 52C- D- - - 50 YD \ 50 ❑50 D 4 -SYWER ES T. - C / o / _�-I� �I -� -�� l 1 B r �, � l � � C� - - -- -- - - - - -- \ / o N o LU LU �Lu �� 1 1 JOB NO. -- -- -- -- -- -- -- -- --�-- -- 4- o - - -- -I- �- I-- --�-� � - � -� \ - \ - �--� -- \ --�-- - � - � � 1 / \ / 1 092033 B B L E D R V` /\/ SCALE SWM FOREST AND OPEN 1 _ 30' \ \ \ V A \ \ \ \ \ \ \ \ V \ SPACE PRESERVATION -- -- -- - I SHEET NO. PHONE / / / / / / 515 510 505 500 495 APPROVED PRE -DEVELOPMENT SCALE 1"=100' / / M LVERT-1N R TING 01`1�5ITE ��v ♦ - \� , \ \ Rl7NOFON �T \ ■ - ��■■_�� \\\ \ \ �\ �- - \l / 7/7. - � -o�iAPPROVEDAVINI- AA TY---PHASE I WET POND I; C09S \ \ h V A \ \ V A♦� A �� /' I \ APPROVE DT TALTc=0.zzhrs. \ 0, ioo'OFOLFw/AFL=3'(Tc=o.i9hrs.) \ '. \ \ - �F \ I I II 575CONC. FLOW w/4 ELtV= 45' (Tc=o.o3 hrs.) I \ \� \ \ \e A� R VED E)A`A' 1 I \ \ V A 4.18 ac., CN= z�c=Jqz hrs. �111■ a \ 1 �1�♦� ��■ ■nr�ii��a�iif11## ■i��■ ♦7► � '1 I - _ / / / / - i� �/ � }��j��i■■■I■��♦ \ \ s v � v 1111111 % � � Il A / ♦ y / / o ♦j \ \ \ \ \ \ 1 IF�APPRbVED DA'C' ��►♦ I \\ \ � \ \ �� \ \11 I III I II i i\\\ `\I' � I � `� . �y60� / / - / //�i-c; CN=6i; Tc=0 15hfs. ♦♦�♦♦ I \\i \\�� 0 41 / iW FRLF wD TOLEV=6c(Tc=oi4 hrs.) ✓ I / / APPROV D �A B'■� / - T ♦ I / I I " / ■ 5 ♦ / LOCATION D APPROVED 3.48�;kPi=i; c=oa5 rs- / 5oo'OFCO C.FL�Ww/AELEV=i8'(�o.oihrs.) ♦♦ ♦ / / / II II I /I I I i' ■� o I 1JJ &AMENDED SWM iooAOF OLF wD TOLEV� 7�(Tc=o13 hrs.) I 5 / / �i / / - / ■ e �� / - ♦�♦III I �� I 11� • �. FACILITY /1�I / �oo'OF CONE--o.q-z hrs.)I/ j / i �p -� �/ / ` - / / / / �' k� \ I I \ i APPROVE'PRE-DEVELOPMENT RIdNOFF FLOWING \h �♦ \. ��.. - r- I \ / 55p/- - - - OFFSJTE IS REDIRECTED PPi20VED&AMENDED / PLANTO_RECEIVE TREATMENT ONSITE ..� // 711"R 540 6 1- 54U' / } 540' / - I / � THE SWM FOREST AND OPEN SPACE EASEMENT IS SUBJECT TOIII GUIDANCE SET FORTH BY DEQ IN THE VIRGINIA STORMWATER I I III I I) \ \ MANAGEMENT PROGRAM. THE AREAS WILL REMAIN UNDISTURBED IN A NATURAL, VEGETATED STATE, EXCEPT FOR ACTIVITIES AS / / \ -� \ / / °\ ✓ APPROVED BY THE LOCAL PROGRAM AUTHORITY, SUCH AS /�I� j��-�'20 \ / / �/ \ -�20� FOREST MANAGEMENT, CONTROL OF INVASIVE SPECIES, I I Ill I I \ // �� // j// �� / �, REPLANTING AND REVEGETATING, PASSIVE RECREATION (E.G., _ J TRAILS),AND LIMITED BUSH HOGGING TO MAINTAIN DESIRED \ EGETATIVE COMMUNITY (BUT NO MORE THAN FOUR TIMES A YEAR). ICI I I I I A r OTE: ANY FOREST & OPEN SPACE PRESERVATION AREA THAT IIII I I _ WAS PREVIOUSLY DISTURBED BY THE CONSTRUCTION OF THE AVINITY I POND (OR DISTURBED WITH THIS CONSTRUCTION) SHALL BE RESTORED USING DEQ BMP SPEC. 4, SOIL AMENDMENTS. as E / LOCATION OF PROPOSED _ J \ ✓ // APPROVED Pre -Development Watersheds / PLUNGE POOL OUTLET - COINCIDES WITH APPROVED CN Tc, hrs. Area, ac. 1-yr. Flow, cfs 2-yr. Flow, cfs 10-yr. Flow, cfs POINT OF ANALYSIS `-� \\ DA W 62 0.22 5.18 3.04 3.74 10.69 DA'B' 61 0.15 3.48 2.21 2.71 8.06 DA ' C' 61 0.15 1.13 0.72 0.88 2.62 ` \ \ Tota I= 9.79 5.97 7.33 21.37 PATEIR PRE-TREATMENSEE kL ROAD PLAN FOR ST RM ;EWE OUTFALL DESIGN CONTRACTOR SHALL INSTALL EMBANKMENT IN I ACCORDANCE w/ THE DESIGN SHOWN ON THESE PLANS. 490 BOTTOM OF BASIN ELEV.=489.00' 485 TO PREVENT FLOTATION THE RISER BASE-/ AND BARREL CONNECTION SHALL BE FIRMLY EMBEDDED 6" INTO AN 18" THICK CONCRETE FOUNDATION THAT IS 8'x8'. 482 > Ld i 0') O W W IO O LCi rn LO 00 W lei 10+00 10+50 11 +00 515 EXISTING GRADE 1 510 AMENDED Impervious Area Summary- Water QUALITY (Areas Located within Parcel's Limits) Proposed Roads 69,950 sf Proposed Driveways 29,750 sf Proposed Buildings 135,500 sf Proposed Sidewalks 21,200 sf 256,400 sf /-PROPOSED ESC 048" CL. III RCP STANDPIPE TO SERVE AS THE RISER. CONTRACTOR SHALL REMOVE UPPER PORTION OF THE 48" STANDPIPE & INSTALL A NEW 3' TALL VDOT MH-i UPPER CONE. CONTRACTOR TO INSTALL A TRASHRACK IN PLACE OF THE FRAME & COVER FOR THE 24" OPENING. TOP OF CONE/ 24" RISER TO HAVE AN ELEV.= 49533'. CONTRACTOR SHALL PLUG ESC DEWATERING ORIFICES WATERTIGHT & INSTALL A NEW 5" LOW -FLOW ORIFICE AT ELEV.=489.00' AND THREE 6" MID -FLOW ORIFICES AT ELEV.=493.50' PROPOSED 10' WIDE TOP OF DAM ELEV. = 497.50' 5001 55WIDE GRASS LINED EMERGENCY SPILLWAY CREST ELEV.=496.33 EXISTING � WATERLINE PROPOSED ESC 018" BARREL OUTLET SHALL BE CONVERTED TO HAVE A HYDRAULIC EQUIVALENT OPENING OF A 012" BARREL. TO ACCOMPLISH THIS, CONTRACTOR SHALL INSTALL A STEEL WEIR PLATE AT THE PIPE OUTFALL COVERING THE TOP io" OF THE PIPE. PROPOSED ESC 018" CL.I III RCP BARREL (L=88'; 48 5 S=o.5o%; INV IN=488.44; INV OUT=488.00 PROPOSED VDOT #3 COARSE AGGREGATE OUTLET PROTECTION EX. 10" SANITARY w/ GEOTEXTILE FILTER FABRIC SEWER PIPE UNDERLAYMENT & VDOT STD. ES-14 g 2 (L=4.5', W1=2% W2=8', D=2' MI .) r- O CD 6 O 11 +50 12+00 12+5012+75 BASIN W W W PROFILE SCALES: 1"=5'(V) 1"=50'(H) PROPOSED 010" HDPE STANDPIPE WITH GRATE INLET 505 TOP TO SERVE AS RISER STRUCTURE & TRASHRACK, 505 RIM ELEV.=495.92. CONTRACTOR TO INSTALL ONE 04.83" LOW -FLOW ORIFICE AT ELEV.= 491.00 w/ TRASHRACK. AT BASE OF RISER, CONTRACTOR SHALL INSTALL A 08" ELBOW FOR THE BARREL INSTALLATION. ELBOW TO BE SET IN CONCRETE FOUN ATION. PROPOSED 4' WIDE TOP 500 OF DAM ELEV. = 498' 500 50' WIDE GRASS LINED EMERGENCY SPI LWAY CREST ELEV.=497.92 495 495 P) SANITARY SEWER BY OTHERS 490 1 BOTTOM OF POOL / ELEV.=491.00' TO PREVENT FLOTATION THE RISER BASE AND BARREL CONNECTION (THE ELBOW) SHALL BE FIRMLY EMBEDDED 6" INTO AN 18" THICK CONCRETE 485 FOUNDATION THAT IS 3'x3'. 010" HDPE PIPE 482 INV IN: 491.0; INV OUT. 490.6 490 APPROVED Post -Development Watersheds AMENDED POST -DEVELOPMENT SCALE 1"=100' ■ ♦ \ �/ �/ AIPPROVEDAVINITYI, ♦♦ ■ - �� v \� ss° ��\ \/// - Vv \ '__�WET POND \ ♦■� V v V A , A ��c // \ (WP2e-r300044) II _ AR. IP VATE \ I \\ ( I ROPOSED SWM FOREST �� ♦♦ I I'I -�W �II \\ j �\ PRESERVATION II llI♦♦ � � I I I \ \ A� I I I \II I ` S OPEN SPACE APPROVED TOTAL Tc 0.21 hrs. PREERVATION ESMT. ioo'OFOLFw/AELEV 5 (Tc o.ishrs.) 1. WITH THIS AMENDMENT zz5 OF CONC. FLOWw AELEV= 9Tc-o.o� hrs. (o.i6 ac.) g75'OFCHANNEL FLOW ?8 ft/s,(Tc=o.o3 hrs.) m / ° I MANUFACTURED BMP SUBAREA (0.45ac. IMP. & 0.23 MANAGED TURF) 1 I I ■ i I \ i� \I II 0i I _ A O REPLACE NTION BASIN W � MENDED DETENTION BASIN m, \`J I ' •m \ TO REPLACE APPROVED 5;- w "" ■ r ao� ICI y -- ■ �. AMENDED DA'B' I * � _ ROPOSED VA DEQ APPROVED I UFACTURED BMP Tc=o.io hrs) /- 40 (7.95 ac.; CN=80.5; % MANBIOSCAPE VAULT). BMP (FILTERRA I 4 AMEND D DA'A' _ - Tc=o.zi hrs.) ( APPROVED FOR A 50% ';♦j PHOSPHOROUS REMOVAL RATE -- �10 I zz- 52 I I i X _ i PROPOSED PLUNGE POOL AT OUTL T OF STORM -SEWER. STORMEWER. PLUNGE POO TO- - _ DISSIPATE FLOWS -TO ENSURE/ j IF _ O STREAM AREAIS ARE NOT E�QDED AMENDED Impervious Area Summary- Water QUANTITY (Areas Located within DA 'A') Proposed Roads 52,510 sf --- �- o Proposed Driveways s Pr i 23,125 sf Proposed Buildings 95,875 sf • T �� _ -_- - - - - w Proposed Sidewalks 16,640 sf �o 188,150 sf -AMENDED Impervious Area Summary- Water QUANTITY (Areas Located within DA W) Proposed Roads 16,450 sf r--- PROPOSED SWM FOREST `\ � \ Proposed Driveways 6,625 sf & OPEN SPACE \ �, \ Proposed Buildings 35,175 sf PRESERVATION ESMT. Proposed Sidewalks 4,560 sf WITH THIS AMENDMENT (o.i6 ac.) \ \_ - 62,810 sf I,IV Ic, nrs. Area, ac. 1-yr. Flow, CTS 2--yr. Flow, crs 10-yr. FIOW, crS DA 'A' 83 0.15 4.94 1.25 2.62 14.89 DA ' B' 79 0.21 4.85 1.11 1.52 6.35 Total= 9.79 2.36 4.14 21.24 AMENDED Post -Development Watersheds CN Tc, hrs. Area, ac. 1-yr. Flow, cfs 2-yr. Flow, cfs 10-yr. Flow, cfs DA 'A' 80.5 0.21 7.95 1.04 2.09 8.50 DA ' B' 90.0 0.10 1.84 1.10 2.69 4.42 Total= 9.79 STORMWATER MANAGEMENT NARRATIVE: 2.14 4.78 12.92 OVERVIEW: THE PROPOSED PLAN PROVIDES STORMWATER TREATMENT FOR THE DEVELOPMENT OF AVINITY ESTATES. THE PROPOSED PLAN COMPLIES WITH PART 1113 REQUIREMENTS. STORMWATER QUANTITY: THE PROPOSED PLAN INCLUDES A DRY DETENTION BASIN, WHICH ATTENUATES & DECREASES OUTFLOWS FOR THE MAJORITY OF THE DEVELOPMENT. THIS SWM FACILITY TREATS SUBAREA W. THE PROPOSED PLAN ALSO INCLUDES A PLUNGE POOL AT THE OUTLET OF SUBAREA'B's STORM SEWER. THE PLUNGE POOL DISSIPATES THE RUNOFF PRIOR TO IT EXITING THE PARCEL, AND PROVIDES MINOR ATTENUATION. THIS AMENDMENT PLAN AND THE ATTACHED CALCULATIONS SHOW THE PROPOSED MODIFICATIONS RESULT IN POST -DEVELOPMENT AMENDMENT FLOWS LESS THAN OR EQUAL TO THE PREVIOUSLY APPROVED POST -DEVELOPMENT 1-, z- AND io-YEAR FLOWS. THE EXCEPTION IS DRAINAGE AREA'B' WHICH HAS A 2-YEAR STORM FLOW WHICH EXCEEDS THE APPROVED POST -DEVELOPMENT FLOW, HOWEVER IT REMAINS LESS THAN THE APPROVED PRE -DEVELOPMENT FLOW, PROVIDING CHANNEL AND FLOOD PROTECTION COMPLIANCE. ADDITIONALLY, COUNTY ENGINEERING PREVIOUSLY EVALUATED AND APPROVED THE CHANNEL AND FLOOD PROTECTION CALCULATIONS WITH THE ORIGINALLY APPROVED WPO PLAN, SO THIS AMENDMENT's REDUCED FLOWS ENSURE THE AMENDMENT IS STILL IN COMPLIANCE WITH COUNTY AND STATE MINIMUM REQUIREMENTS. AS A RESULT, NO FURTHER ANALYSES ARE REQUIRED FOR QUANTITY COMPLIANCE. PLEASE SEE THE ATTACHED CALCULATIONS PACKET FOR THE AMENDMENT's CHANGES. STORMWATER QUALITY: THE STORMWATER QUALITY TREATMENT FOR THIS DEVELOPMENT IS PROVIDED VIA THREE BEST MANAGEMENT PRACTICES. THE BEST MANAGEMENT PRACTICE OF PROTECTING FOREST & OPEN SPACES FROM DISTURBANCES IS UTILIZED. A PROPOSED SWM FOREST & OPEN SPACE EASEMENT WILL BE RECORDED WITH THIS DEVELOPMENT's SUBDIVISION PLAT. SECONDLY, A MANUFACTURED BMP IS PROPOSED. AN OFFLINE FILTERRA BIOSCAPE VAULT IS PROPOSED NEAR THE CLUBHOUSE PROVIDING A 50% PHOSPHOROUS REMOVAL RATE. AFTER THE USE OF THESE TWO BMPs A FINAL PHOSPHOROUS REMOVAL RATE OF 9.96 Ibs/yr. IS REQUIRED. THE BEST MANAGEMENT PRACTICE OF PURCHASING NUTRIENT CREDITS WILL BE IMPLEMENTED FOR I- 0') 0-) � THE REMAINING BALANCE, ACHIEVING COMPLIANCE WITH PART 116 WATER QUALITY _ REQUIREMENTS. PLEASE SEE THE ATTACHED STORMWATER MANAGEMENT CALCULATIONS O 0) PACKET FOR ADDITIONAL DETAILS. 10+00 10+50 11 +00 11 +5011 +75 Total Phosphorous Removal Required for the Development 10.62 Ibs/yr PLUNGE POOLS' Phosphorous Removal Achieved from the BMP Practice of the SWM Forest & Open Space Easements 0.12 Ibs/yr Phosphorous Removal Achieved through the Proposed Manufactured BMP 0.54 Ibs/yr Remaining Phosphorous Removal Required to be Purchased 9.96 Ibs/yr L=80'; S=0.50% PROPOSED RIPRAP ENERGY DISSIPATER OUTFALL VDOT 485 STD. EC-1 CL. Al RIPRAP W/GEOFABRIC UNDERLAYMENT L=28'; W1=7 ; W2=11` D=1.4' 48? DETENTION BASIN 'A' & `-� I I ' \` " Filterra Bioscape Vault Key Design Elevations MANUFACTURED BMP DESIGN I \ \ Vault Rim = 525.50 SCALE 1" = 30' \ II \ II I ��_�\ I i Vault - UD A = 6" SDR 35 PVC Pipe 15.5 ft ' \ \ 520.08 Invert In) 519.77 (Invert Out) UDA-UDB= 6" SDR 35 PVC Pipe 20.0 ft �, \ 519.77' (Invert In) -� �� I I I I I I \ I 495.50' (Invert Out) \ I \ I I I UDB - OUT = 6" SDR 35 PVC Pipe \ I ,, I : \ i\ F 6.5 ft \ otl/ 495.50' (Invert In) 495.00' (Invert Out) MERGENCY ACCESS ROAD SHALL PROVIDE I 1 'i I \ I \ V \ VI \ SWM FACILITY \ \> I \ I \ \ \ I II \ I i I MAINTENANCE & ACCESS I \\ I I I I I \ \\\\ \ G I PROPOSED RIPRAP ENERGY DISSIPATER PRE-TREATMENT. \ I \ \ \ I SEE FINAL ROAD PLANS FOR I \ I\ STORM SEWER OUTFALL DESIGN WIDE CURB CUT WITH I f PROPOSED io' WIDE TOP I I \ �I OF DAM ELEV. = 497.50' LONG FLANKING i 37\ I IF < SIDEWALK TRANSITIONS I I I \ I ON EITHER SIDE FOR EASY PEDESTRIAN TRANSITION. 1 I I I I I I I I o f I �1 / _ 55' WIDE GRASS LINED I I w 4J II EMERGENCY SPILLWAY CREST ELEV-496-33 I I cl �-� 1 �''I I FILT R + G A S j SW LE F O P U T I I� \ / I 1 II \ I PROPOSED ESC 048" CL. III RCP STANDPIPE TO 0' x 8 I I I VE AS THE RISE. CTRACTR SHALL TIAOLL U) r (I IN I I I I I UPPER PORTION OFTHOEN8" STANODPIPE & INSSERVE A > m L P) I I /� I 1 1 1 NEW 3' TALL VDOT MH-i UPPER CONE. CONTRACTOR ` �I / TO INSTALL A TRASHRACK IN PLACE OF THE FRAME rrn ;U j I I II & COVER FOR THE 24" OPENING. TOP OF CONE/ 24" D D A I I f ( ' RISER TO HAVE AN ELEV.= 495.33'• CONTRACTOR SHALL PLUG ESC DEWATERING ORIFICES X \ WATERTIGHT & INSTALL A NEW 5" LOW -FLOW 11 ORIFICE AT ELEV.=489.00' AND THREE 6" MID -FLOW ORIFICES AT ELEV.=493-50' �\ I PROPOSED ESC 018" CL. III RCP BARREL (L=88'; S=0.50%; INV PROPOSED FILTERRA B OSCAPE VAULT IN=488.44; INV OUT=488.00 (FTBSV-B) FOOTPRINT = 13' x 7' TOP OF MULCH ELEVATION = 524.50' (PERIMETER �) II \ I /I GRASS SWALE RIM ELEVATION = 525.50') Ily / 6" SDR 35 PVC OUTLET PIPE ELEVATION=522.08' I I _ PROPOSED ESC 018" BARREL I 1 OUTLET SHALL BE CONVERTED TO / 2' WIDE CURB CUT TO DIRECT FIRST FLUSH TO GRASS SWALE. 4 I HAVE A HYDRAULIC EQUIVALENT PROPOSED YARD DRAIN TO CONNECT WITH YARD DRAIN SYSTEM I I\ I OPENING OF A 0iz" BARREL. TO BEHIND LOTS 53-61, AND THEN DAYLIGHT TO THE GRASS SWALE �II I I ACCOMPLISH THIS, CONTRACTOR UPLAND OF THE PROPOSED OFFLINE FILTERRA BIOSCAPE VAULT. STR. 22 PROPOSED VDOT #3 COARSE AGGREGATE --- SHALL INSTALL A STEEL WEIR PLATE SHALL SERVE AS THE BYPASS INLET FOR PARKING LOT DURING LARGER OUTLET PROTECTION w/ GEOTEXTILE AT THE PIPE OUTFALL COVERING STORM EVENTS & ANY EXCESS FLOWS TO THE FILTERRA BIOSCAPE CAN FILTER FABRIC UNDERLAYMENT & VDOT I THE TOP io" OF THE PIPE. SAFELY OVERFLOW VIA SHEET FLOW TO THE DETENTION BASIN. SEE STD. ES-1 (L-4.5', W1-2', W2-8', D-2' MIN.) / DETAIL ON THE NEXT SHEET FOR FILTERRA BIOSCAPE VAULT DETAILS. TH 0� � SCOTT R. COLLINS'Z U No. 35791 � sIONAL E� z w z z Uj � O O d J < � 0 � z w m :D O U w ZzJU< O C� O Q _j 0 > w w Q V1 w a o LU (10 w LU li LU00 00 00 Q n O\) M LD M z cyi N 1 C W N z N LU Z Q W o > z ZLLiJ LU 2:z J W LU cn z W L9 1-- J V a Q O O Z z J Q d- W U Cn LU 1LU U1 < 3: W Z) ZLU O U��/� vJ - w z W IIIIIIJ > VJ J� W N� L.L V C) N 0 w a Ln JOB NO. 092033 SCALE AS SHOWN SHEET NO. 5 L o � J J 0 o L C Q� o U _0 Q U x U (1) � o 0 o a� w .3 0 0) C C: T � 0 0 C o �0U o:3 z� w � w w 0 z 0 o z \ w7D z ° L U > Cn o UCn O 0 In FACILITY PLANTING SPECIFICATIONS: 1. THE DRY DETENTION CELL SHALL HAVE A TURF GROUND COVER SUCH AS GRASS MULCH OR SOME OTHER FORM OF A VEGETATIVE GROUNDCOVER. LANDSCAPING BEYOND THIS IS OPTIONAL AND IS NOT REQUIRED. 2. THE PROPOSED SIDE SLOPES OF THE CELL, EXCLUSIVE OF THE EMBANKMENT, SHALL BE A MAXIMUM OF 3:1 TO PROMOTE SETTLING & REDUCE THE RISK OF EROSION. THE PROPOSED FLOOR SLOPES SHALL HAVE A SLOPE RANGING FROM 0.5%-1.0%. 3. PLANT SELECTION, IF CHOSEN, SHALL PROMOTE DIVERSE WILDLIFE AND WATERFOWL USE WITHIN THE CELL. 4. THE LANDSCAPING PLAN SHALL ALLOW THE POND TO MATURE INTO A NATIVE FOREST IN THE RIGHT PLACES, BUT YET KEEP MOWABLE TURF ALONG THE EMBANKMENT AND ALL ACCESS AREAS IF TREES AND SHRUBS ARE TO BE PLANTED. 5. WOODY VEGETATION SHALL NOT BE PLANTED OR ALLOWED TO GROW WITHIN 15 FEET OF THE TOE OF THE EMBANKMENT NOR WITHIN 25 FEET OF THE PRINCIPAL SPILLWAY STRUCTURE. 6. THE SOILS IN AND AROUND THE DETENTION CELL ARE OFTEN SEVERELY COMPACTED DURING THE CONSTRUCTION PROCESS, TO ENSURE STABILITY. THE DENSITY OF THESE COMPACTED SOILS CAN BE SO GREAT THAT IT EFFECTIVELY PREVENTS ROOT PENETRATION AND, THEREFORE, MAY LEAD TO PREMATURE MORTALITY OR LOSS OF VIGOR. AS A RULE OF THUMB, PLANTING HOLES SHOULD BE THREE TIMES DEEPER AND WIDER THAN THE DIAMETER OF THE ROOTBALL FOR BALL -AND -BURLAP STOCK, AND FIVE TIMES DEEPER AND WIDER FOR CONTAINER -GROWN STOCK. 7. IF ELECTED, THE LANDSCAPING PLAN SHALL AVOID SPECIES THAT REQUIRE FULL SHADE, OR ARE PRONE TO WIND DAMAGE. EXTRA MULCHING AROUND THE BASE OF TREES AND SHRUBS IS STRONGLY RECOMMENDED AS A MEANS OF CONSERVING MOISTURE AND SUPPRESSING WEEDS IF PLANTS ARE TO BE INSTALLED. CONTRACTOR REQUIREMENTS: 1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS. 2. LANDSCAPE CONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL INFORMATION. THE CONTRACTOR SHALL ABIDE BY ITS CONTENTS; HOWEVER ANY NOTES OR SPECIFICATIONS ON THE PLANS SHALL SUPERSEDE THOSE OUTLINED IN THE SPECIFICATIONS MANUAL (COPIES ARE AVAILABLE FOR A FEE FROM THE VIRGINIA CHAPTER OF THE AMERICAN SOCIETY OF LANDSCAPE ARCHITECTS, VIRGINIA NURSERYMEN'S ASSOCIATION, INC. AND THE VIRGINIA SOCIETY OF LANDSCAPE DESIGNERS). 3. ALL PLANT MATERIAL SHALL MEET THE MINIMUM SPECIFICATIONS AND STANDARDS DESCRIBED IN THE CURRENT ISSUE OF THE AMERICAN STANDARD FOR NURSERY STOCK, PUBLISHED BY THE AMERICAN ASSOCIATION OF NURSERYMEN, 1250 STREET, NW, SUITE 500, WASHINGTON, DC 20005. 4. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN. 5. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY 1-800-552-7001 BEFORE ANY EXCAVATION). 6. REFER TO THE APPROVED FINAL SITE PLANS FOR ANY DETAILED SITE INFORMATION. 7. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES. 8. PLANTS, WHEN APPLICABLE, WILL BE PREPARED FOR SHIPMENT IN A MANNER THAT WILL NOT CAUSE DAMAGE TO THE BARK, BUDS, BRANCHES, STEMS, OR OVERALL SHAPE OF THE STOCK. CONTAINER GROWN PLANTS WILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE BEEN GROWN. 9. ALL PLANT MATERIAL, WHEN APPLICABLE AND NOT OTHERWISE SPECIFIED, SHALL BE UNIFORMLY BRANCHED AND HAVE A VIGOROUS ROOT SYSTEM. PLANT MATERIAL SHALL BE HEALTHY, VIGOROUS, AND FREE FROM DEFECTS, DECAY, DISEASES, INSECT PEST EGGS, AND ALL FORMS OF INFESTATION. ALL PLANT MATERIAL SHALL BE FRESH, FREE FROM TRANSPLANT SHOCK OR VISIBLE WILT. PLANTS DEEMED UNHEALTHY WILL BE REJECTED. 10.ALL CONTAINER STOCK PLANTINGS SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD ITS SOIL. CONTAINER STOCK WITH POORLY DEVELOPED ROOT SYSTEMS WILL NOT BE ACCEPTED. 11.PLANTS NOT INSTALLED ON THE DAY OF ARRIVAL ON SITE SHALL BE STORED AND PROTECTED BY THE CONTAINER. OUTSIDE STORAGE AREAS WILL BE SHADED AND PROTECTED FROM THE WIND AND SUN. PLANTS STORED ON SITE SHALL BE PROTECTED FROM ANY DRYING AT ALL TIMES BY COVERING THE BALLS OR ROOTS WITH MOIST SAWDUST, WET BURLAP, WOOD CHIPS, SHREDDED BARK, PEAT MOSS, OR OTHER SIMILAR MULCHING MATERIAL. 12.THE OWNER RESERVES THE RIGHT TO SUBSTITUTE PLANT MATERIAL TYPE, SIZE AND/OR QUANTITY. ANY SUBSTITUTIONS MUST BE APPROVED BY THE LOCAL MUNICIPALITY'S REVIEW AGENCY. 13.MINOR FIELD ADJUSTMENTS MAY BE NECESSARY DUE TO SITE CONDITIONS (EX: ROOTBALL AND UTILITY CONFLICT). MAJOR ADJUSTMENTS MUST BE APPROVED BY THE DESIGNER. 14.NO PLANTING SHALL OCCUR WHEN THE SOIL IS FROZEN. 15. PLANT MATERIAL SHALL BE PLACED IN EXISTING SOIL WITH EACH PLANTING PIT EXCAVATED TO A SIZE SUFFICIENT TO CONTAIN THE ENTIRE ROOT BALL OR ROOT MASS, WITHOUT CRAMPING ROOT STOCK. 16.THE CONTRACTOR SHALL MAINTAIN A ONE (1) CALENDAR YEAR 90% CARE AND REPLACEMENT WARRANTY FOR ALL PLANTINGS. THE PERIOD OF CARE AND REPLACEMENT SHALL BEGIN AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE FOR ONE CALENDAR YEAR. 17.THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PLANTING ON A DAILY BASIS. 18.THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE CONTRACTOR'S CONTROL. FACILITY CONSTRUCTION 1. THE DETENTION CELL MAY SERVE AS A SEDIMENT BASIN DURING PROJECT CONSTRUCTION. IF THIS IS DONE, THE VOLUME SHALL BE BASED ON THE MORE STRINGENT SIZING RULE (EROSION AND SEDIMENT CONTROL REQUIREMENTS VS. WATER QUALITY & QUANTITY TREATMENT REQUIREMENTS). INSTALLATION OF THE PERMANENT RISER SHALL BE INITIATED DURING THE CONSTRUCTION PHASE, AND DESIGN ELEVATIONS SHALL BE SET WITH FINAL CLEANOUT OF THE SEDIMENT BASIN AND CONVERSION TO THE POST -CONSTRUCTION DETENTION CELL IN MIND. THE BOTTOM ELEVATION OF THE DETENTION CELL SHALL BE LOWER THAN THE BOTTOM ELEVATION OF THE TEMPORARY SEDIMENT BASIN WHENEVER POSSIBLE. APPROPRIATE PROCEDURES SHALL BE IMPLEMENTED TO PREVENT DISCHARGE OF TURBID WATERS WHEN THE BASIN IS BEING CONVERTED INTO AN ED POND. 2. DETENTION CELLS SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE CELL IS COMPLETELY STABILIZED. IF THE PROPOSED DETENTION CELL WILL BE USED AS A SEDIMENT TRAP OR BASIN DURING THE CONSTRUCTION PHASE, THEN THE FACILITY WILL BE DEWATERED, DREDGED AND RE -GRADED TO DESIGN DIMENSIONS AFTER THE ORIGINAL SITE CONSTRUCTION IS COMPLETE. 3. INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION OF THE DETENTION CELL INCLUDING TEMPORARY DE -WATERING DEVICES AND STORMWATER DIVERSION PRACTICES. ALL AREAS SURROUNDING THE CELL THAT ARE GRADED OR DENUDED DURING CONSTRUCTION SHALL BE PLANTED WITH TURF GRASS NATIVE PLANTINGS OR OTHER APPROVED METHODS OF SOIL STABILIZATION. 4. CONTRACTOR SHALL EXCAVATE THE CORE TRENCH AND INSTALL THE SPILLWAY PIPE DURING THE ESC PHASE. 5. CONTRACTOR SHALL ALSO INSTALL THE RISER, OUTFLOW STRUCTURE AND/OR AND BARREL(S) DURING THE ESC PHASE TO ENSURE THE TOP INVERT OF THE OVERFLOW WEIR IS CONSTRUCTED LEVEL AT THE DESIGN ELEVATION. 6. THE CONTRACTOR SHALL THEN CONSTRUCT THE EMBANKMENT AND ANY INTERNAL BERMS (IF APPLICABLE) IN 8 TO 12-INCH LIFTS AND COMPACT THE LIFTS WITH APPROPRIATE EQUIPMENT.THE CONTRACTOR SHALL ALSO ADHERE TO THE CLAY LINER SPECIFICATIONS OUTLINED IN TABLE 14.4 BELOW: Table 14.4. Clay Leger Spee icauons Properly Test Method Unit S eitication Pemleability ASTM D-2434 CmJser 1 x J 71 isticity Index of Clay ASTM D-423.+424 % Not less than 15 Liquid Limit of Uay ,ASTM D-2216 % Not less than- 30 Clay ParUdes Passing ASTM D-422 % Not less than 30 Clay Compaction ASTM D7 221{ % 559E of standard pr=or den si! Source: Virginia starmwater Mw3gemen€ Hand bocR (1999) 7. UPON COMPLETION OF THE EMBANKMENT GRADING, THE CONTRACTOR SHALL EXCAVATE/GRADE UNTIL THE APPROPRIATE ELEVATION AND DESIRED CONTOURS ARE ACHIEVED FOR THE BOTTOM AND SIDE SLOPES OF THE DETENTION CELL. 8. CONTRACTOR SHALL THEN CONSTRUCT THE EMERGENCY SPILLWAY IN CUT OR STRUCTURALLY STABILIZED SOILS. 9. FINISH CONSTRUCTION OF ALL OUTLET STRUCTURES, INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION. 10.THE CONTRACTOR SHALL NEXT STABILIZE EXPOSED SOILS WITH TEMPORARY SEED MIXTURES APPROPRIATE FOR THE CELL. 11.THE CONTRACTOR SHALL THEN INSTALL THE LANDSCAPING IF APPLICABLE. 12.ALL CONSTRUCTION SHALL ADHERE TO THE VIRGINIA DEQ POST CONSTRUCTION BMP CLEARINGHOUSE REQUIREMENTS SET FORTH IN DESIGN SPECIFICATION NUMBER 15. FACILITY MAINTENANCE: MAINTENANCE OF DETENTION CELLS IS DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE CELL. DURING THESE INSPECTIONS THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION, AND THE OWNER THEREAFTER: 1. MEASURE SEDIMENT ACCUMULATION LEVELS. 2. MONITOR THE GROWTH OF WETLANDS, TREES AND SHRUBS PLANTED, AS APPLICABLE. RECORD THE SPECIES AND THEIR APPROXIMATE COVERAGE, AND NOTE THE PRESENCE OF ANY INVASIVE PLANT SPECIES, AS APPLICABLE. 3. INSPECT THE CONDITION OF STORMWATER INLETS TO THE POND FOR MATERIAL DAMAGE, EROSION OR UNDERCUTTING. 4. INSPECT THE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY GROWTH, OR GULLY EROSION THAT MAY UNDERMINE EMBANKMENT INTEGRITY. 5. INSPECT THE OUTFALL CHANNEL FOR EROSION, UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, ETC. 6. INSPECT CONDITION OF PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SPALLING, JOINT FAILURE, LEAKAGE, CORROSION OR OTHER FAILURES. 7. INSPECT CONDITION OF ALL TRASH RACKS, REVERSE SLOPED PIPES OR FLASHBOARD RISERS FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION OR OTHER FAILURES. 8. INSPECT MAINTENANCE ACCESS TO ENSURE IT IS FREE OF WOODY VEGETATION, AND CHECK TO SEE WHETHER VALVES, MANHOLES AND LOCKS CAN BE OPENED AND OPERATED. 9. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE POND FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING, AND MAKE NEEDED REPAIRS IMMEDIATELY. FACILITY INSPECTION: MULTIPLE INSPECTIONS ARE CRITICAL TO ENSURE THE CELL(S) ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER AND INSPECTOR, DURING THE FOLLOWING STAGES OF THE CELL'S CONSTRUCTION PROCESS: 1. PRE -CONSTRUCTION MEETING 2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) 3. EXCAVATION/GRADING (E.G., INTERIM/FINAL ELEVATIONS) 4. DETENTION CELL INSTALLATION (E.G., INTERIM AND FINAL ELEVATIONS) 5. INSTALLATION OF THE EMBANKMENT, THE RISER/PRIMARY SPILLWAY, AND THE OUTLET STRUCTURE(S). 6. PLANTING PHASE, IF APPLICABLE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT) 7. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) OFFLINE FILTERRA BIOSCAPE VAULT CONSTRUCTION NOTES: FACILITY PLANTING SPECIFICATIONS: 1. CONTRACTOR SHALL SELECT AN APPROPRIATE PLANT FROM CONTECH's APPROVED LIST. CONTRACTOR SHALL CONSULT CONTECH ENGINEERED SOLUTIONS FOR PLANT DETAILS. PLANT SELECTION FROM THE APPROVED CONTECH MID -ATLANTIC REGION 'FILTERRA BIOSCAPE PLANT LIST' IS REQUIRED. CONTRACTOR REQUIREMENTS: 1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS. 2. THE CONTRACTOR SHALL CONSULT WITH CONTECH ENGINEERING FOR SPECIFIC MANUFACTURER REQUIREMENTS. THE CONTRACTOR SHALL CONSULT WITH CONTECH ENGINEERING PRIOR TO CONSTRUCTION AND ENSURE ENOUGH LEAD TIME IS PROVIDED TO AVOID DELAYS FOR MANUFACTURING. 3. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN. 4. THE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY 1-800-552-7001 BEFORE ANY EXCAVATION). 5. REFER TO THE APPROVED FINAL SITE PLANS FOR ANY DETAILED SITE INFORMATION. 6. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES. 7. THE CONTRACTOR SHALL MAINTAIN A ONE (1) CALENDAR YEAR 90% CARE AND REPLACEMENT WARRANTY FOR ALL PLANTINGS. THE PERIOD OF CARE AND REPLACEMENT SHALL BEGIN AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE FOR ONE CALENDAR YEAR. 8. THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PLANTING ON A DAILY BASIS. 9. THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE CONTRACTOR'S CONTROL. FACILITY CONSTRUCTION 1. THE CONTRACTOR SHALL WORK CLOSELY WITH CONTECH ENGINEERING TO ENSURE ALL THE MINIMUM MANUFACTURER REQUIREMENTS ARE MET. 2. THE FILTERRA BIOSCAPE VAULT SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE BMP IS COMPLETELY STABILIZED 3. INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION OF THE BMP INCLUDING STORMWATER DIVERSION AND FILTERING PRACTICES. ALL AREAS SURROUNDING THE BMP THAT ARE GRADED OR DENUDED DURING CONSTRUCTION SHALL BE PLANTED WITH TURF GRASS, NATIVE PLANTINGS, OR OTHER APPROVED METHODS OF SOIL STABILIZATION. 4. CONTRACTOR SHALL ENSURE THE INLET CONVEYING RUNOFF TO THE FILTERRA BIOSCAPE VAULT IS ADEQUATE AND STABILIZED. 5. THE CONTRACTOR SHALL NEXT STABILIZE EXPOSED SOILS WITH TEMPORARY SEED MIXTURES APPROPRIATE FOR THE SURROUNDING AREA. 6. THE CONTRACTOR SHALL THEN INSTALL THE VAULT AND ITS OUTLET. THE CONTRACTOR SHALL THEN COMPLETE THE FILTERRA BIOSCAPE VAULT CONSTRUCTION BY INSTALLING ITS INTERNAL COMPONENTS. CONSTRUCTION SHALL ADHERE TO THE VIRGINIA DEQ POST CONSTRUCTION BMP CLEARINGHOUSE REQUIREMENTS AND CONTECH ENGINEERING's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s REQUIREMENTS.. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER, INSPECTOR AND CONTECH REPRESENTATIVE PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THESE 3 PARTIES, DURING THE FOLLOWING STAGES OF THE BMP'S CONSTRUCTION PROCESS: 1. PRE -CONSTRUCTION MEETING 2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) 3. EXCAVATION/GRADING (E.G., INTERIM/FINAL ELEVATIONS) 4. FILTERRA BIOSCAPE VAULT & OUTLET INSTALLATION (E.G., INTERIM AND FINAL ELEVATIONS) 5. INSTALLATION OF THE VAULTS INTERNAL COMPONENTS 6. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) GENERAL SWM NOTES: 1. STATE APPROVED TRASH RACKS AND ORIFICES SHALL BE INSTALLED ON ALL ORIFICE OPENINGS. SEE DETAILS ON THIS SHEET, OR EQUIVALENT, FOR INSTALLATION OF ORIFICE AND RISER TRASHRACKS. 2. CONCRETE FOUNDATIONS SHALL BE INSTALLED ON ALL RISER STRUCTURES MEETING MINIMUM VESCH 3.14 SPECIFICATIONS. 3 CONTRACTOR SHALL HIRE A THIRD PARTY GEOTECHNICAL ENGINEER TO ENSURE THE EMBANKMENTS ARE STRUCTURALLY SOUND. THE EMBANKMENTS SHALL HAVE A COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON THIS SHEET. BERMS AND SPILLWAYS SHALL BE STABILIZED WITH EC-3 MATTING AND THE REMAINING DISTURBED EMBANKMENT SLOPES SHALL BE STABILIZED WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF ML CL SC OR GC SOILS & BE FREE OF WOOD, ROOTS, ROCKS OR ANY OTHER NON COMPACTING SOIL. COMPACTED FILL SHALL BE PROCTOR MAXIMUM DRY DENSITY ASTM D698 AND HAVE A MINIMUM OF 95% OF MAXIMUM DRY DENSITY AND 2%OF OPTIMUM MOISTURE CONTENT. ALL EXISTING AND PROPOSED FILL MATERIAL AND PROPOSED CONSTRUCTION SHALL BE APPROVED BY AN ONSITE GEOTECHNICAL ENGINEER PRESENT DURING THE CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS, AND PRESENT DURING THE CORE SAMPLING. THE DOWNSTREAM SIDE OF ALL EMBANKMENTS SHALL HAVE A MAXIMUM :1 SLOPE. 4 3 S. CONTRACTOR AND CONSTRUCTION SHALL ADHERE TO ALL OSHA REQUIREMENTS. ADDITIONALLY, SPECIAL ATTENTION SHALL BE GIVEN TO THE CONSTRUCTION SHORING ASSOCIATED WITH THE BASIN EXCAVATION. GENERAL CONSTRUCTION NOTES: 1. THE MINIMUM REQUIREMENTS SET FORTH IN VDOT STD. PB-1 SHALL BE MET FOR PIPE BEDDING AND BACKFILL. THE MINIMUM HEIGHT OF COVER FOR PIPES SHALL BE MET AND BE IN ACCORDANCE WITH VDOT STD. PC-3.. 2. ALL FILL SHALL BE PLACED AT 95% COMPACTION AND TESTED BY A GEOTECHNICAL ENGINEER TO ENSURE COMPACTION IS REACHED AND MAINTAINED. 3. PRIOR TO CONSTRUCTION THE CONTRACTOR SHALL TEST -DIG AT THE EXISTING INLETS & OUTFALLS TO CONFIRM THE INVERTS AND TO ENSURE THE PROPOSED GRADES CAN BE ACHIEVED. CONTRACTOR SHALL ALSO VERIFY EXISTING ELEVATIONS OF CURB, GUTTER, PAVEMENT AND BUILDINGS. CONTRACTOR SHALL NOTIFY COLLINS ENGINEERING OF ANY DISCREPANCIES IN THE HORIZONTAL OR VERTICAL ALIGNMENT PRIOR TO ORDERING AND CONSTRUCTION. 4. ALL PROPOSED SLOPES STEEPER THAN 3:1 SHALL HAVE A LOW MAINTENANCE GROUND COVER FOR STABILIZATION PURPOSES. THESE AREAS SHALL NOT BE PLANTED WITH A GRASS COVER FOR STABILIZATION & SHALL BE A GROUND COVER CHOSEN FROM TABLE 3.37C OF THE VESCH UNLESS OTHERWISE DIRECTED BY THE INSPECTOR. S. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR CONSTRUCTION INDUSTRY (29 CFR PART 1926). SWM FOREST & OPEN SPACE EASEMENT NOTES: 3. NUTRIENT CREDITS WILL BE REQUIRED TO BE PURCHASED FOR THIS DEVELOPMENT PRIOR TO VSMP PLAN APPROVAL. 'SWM' IS AN ACRONYM FOR STORMWATER MANAGEMENT. 4. THE SWM FOREST AND OPEN SPACE EASEMENT IS SUBJECT TO THE GUIDANCE SET FORTH BY DEQ IN THE VIRGINIA STORMWATER MANAGEMENT PROGRAM. THE AREAS WILL REMAIN UNDISTURBED IN A NATURAL, VEGETATED STATE EXCEPT FOR ACTIVITIES AS APPROVED BY THE LOCAL PROGRAM AUTHORITY, SUCH AS FOREST MANAGEMENT, CONTROL OF INVASIVE SPECIES, REPLANTING AND REVEGETATING, PASSIVE RECREATION (e.g. TRAILS), AND LIMITED BUSH HOGGING TO MAINTAIN DESIRED VEGETATIVE COMMUNITY (BUT NO MORE THAN FOUR TIMES A YEAR). FILTERRA BIOSCAPE VAULT DETAILS - CONSTRUCTION SHALL ADHERE TO FILTERRA STANDARDS - CONTACT GLEN PAYTON - GPAYTON@CONTECHES.COM FOR DETAILS I I } �-_ �_ _- _------------ ter. �� I F" 'i I �r I - I - ----- ENERGY ---- �J - ai vlPa�ttaN Roar„ AT [rI>=T AREA da A Lti %n RLI■ t I I I .: l 1 : 's: OF SUR 35 PAC L ~ 'l .t: x1.. CLr=C€ UPUNG CaSTINTOYUILt I I IT , - -------------------------- %-LATERJ;LS .Iv'r GDJNT DE9CRIPnON WO7ALL=C5y 2 PLAYT. SEE INSTALATIO+J hL 11JFACTIJRL- N 5TE G MJLCm.. SEE 14rdv-L €TION E.64 CY W2TE MANJFACTUFL= ENERGY LEI -qPA 104 ROCS 1 LAYER hL4MIJFhCl1JRER t�� f ENGINEEREDB:�Fl.l ,4l1Ow MANJFA,CTLJFLE- NEJIA I.29 CY 1:Tq-, RROLNDAGGREGATE MALaJFACTJF�4 UNDERDMN 3TOh€ I F OVh:.IT 713A MA4JIFACTURER -PtAMT GENERAL WY17M + 1 W&JFACTURIERTOPROVJ[rEALL MATE.RL5LS UNLE,'f NO= CMiERWISE ENERGY U1SSIRAnON 2 FOR FAULUATICN DR&W hK;S MTH DETALIED-rRUMR.E OIW5.t"`3rk�. AND VffJGHTS, ROCKLAYER PrLEPCE LChrrACT THE NMLIFACTIRE4 -------------y----------- -- 3 ENGINEERED91CFILTWATER OLC9ERLAFCF vhTALL DESaGNDATA ARID NF,76t41IONCCNTArhED 114 THIC DRAh1NG ------------_-_--- dyT]i1.ICTURESHALL MEET PEDE3TRLAN LRE LCAID WTH H; S €*1EE1_ LOAD MOUNTHIGTHE RW=_E":-52450k 3'P JLCH CURB AN3 ADACENTH3-MLNEIMD3liPoG?de.RCE]NTHEEWAJISOFTHE3TRIJI_'TLRE, ENGINEERED & 3tFWNCEARTHOOVEROFCANDGRIClJM"TEREEVAnONSST,ORBELCN,TFE EIG'FILTRATION Of�TL F- EINJERTELEVATION. ENGiNEEROF:4E7CORDTOCONM:.RMACTIJAL M OLMLET PIF ` GR INE WATE9 ELEVATION. CAS-nNGG SHALL MEET AJIuU34 HTO E }' INV.EILEY-522.M= A' C8' N M'5L EYOINEE.9M810FlLTRATIONSTFAJGTU9ESHALL PR.ECi9TCONCRErEC-CMEDRFAN; D Uri]ERMAIN TOA�ITVQ-W7,ASTM G9'18AND ACJ�31aUDADFdICTOR UkEMNMLThM I SIOhF_ E. MIDLAINFILTRATMWRATE U1DMIR FLOWLUT ELEV. 521.54' 1W.TALLAMCN NOTES A ANYSU9-SSE&AC1(F[_LDEPP61.ANIXORALFTI-F_0TATION PROMOC ARE f waECIF IC DESIGN COI JMDE ATNDM AND SHALL BE SP CIf1En BY ENG1NEFLOF . SECTION A -A SECTION C-C RECORD E3. CONTiiACTORTo, FIIOMDEE4'JFP4AENTMTH :J1FFICIENFi7FTiWGAhR}REACHCAP,SCCrY TO LIFT AND SET THE E- %SINEERE3 &OFlLTRkT10N ;TRUL'iURE SPREADER MR MTH GJFFICIENr CAEL IS 9EGyJIRED FOR SAFETY AND REDUCTJDI4 i}F aq AGE TO CONCRETE STRUCTURE C_ C.OFfrtiAC:TOR TOOCT15L JOINT SEALMU BETWEEN ALL STRUCTURE MCTIUrt3 AND ,EMLE jTWJCTURf r1_ CONTPA€:TOR T O PIUMDE AND INSTALL OUTLET RIPE PVC COUAP JIG 4S C ST-I a TO STRUr_TLN;r= VV t FOR OUTLET CCNNBC:TJON E COWPJ C:T4R 70 KFPFfYAND INSTALL I NLEr E%CiEG7JON EAR IF R1_-=RED SY :OIAe_ -xJRIrolcTlc�rc f i'ANr4ACT0R TO TAKE APPROPRIATE MEh7UR-_- TO PROTT�T ENGINEERED MFLMATA7N M EDLA BAY FROM CGNSTR O'i-RE'LATED EROSION RUNDFF G. MANUFACTMER 13 Fi ;PONSIEE- FOR AG7VATI0`I OF THE SYYMM W-MCH INCLUDES PLAN n 4G OF THE SPECIFIED PLANT. MLirLCeL IN ;TALL ATICk ANG PLAl:4.5PG Of %SSIPkTION ROCK Ac-mA-nL!L ON_`-' OCCJR.S LSHEN T11E sn=- is PJLL? srAj3iLJ Wrr,.i FINAL PAVEWIXT kNGTALLED AND SW57 G-EM OF 001% `'rFWCION SEJWNT tormRaxTm I�I�,�ND SERIES T W RACE (OR EQUIVALENT) CONCRETE MANHOLE STANDARD 60 INCH RACK SHOM DIMENSIONS IN INCHES FInPF 9Ti:LxurgaI , iw- CUT+ rL�grlC S�L€JTHh4`], INS. f FF �--� I II 1 JI I SIDE VIEW SturmRaXTM Round Series for Concrete Manhole Park HIS, DIm A Dim S DkoC Min ID Min OD W24 17 Y4 14 Va 28 - 24 30 A�,36 2i 14 40% 36 43 Lr48 27 Y4 1 18 54 48 57 RS f,0 27 % 18 % 66 % 60 70 Plastic Solutions, Inc. CUSTOMER uli,,y PO Box 43W, Wtndxntcr. VA Z2604 Z39 M1cCAmne Rd. Wlnehester, VA 2.2603 1,877):577-S727 phorm P _ { 540a 72Z-22 [9 fex h tqr. N+rM+w.�r1 asi7trsdhJ dlm, LnJT, 4LrMrE-R SECTION FtE#I0YA9LE FOR AOCE59 ISOMETRIC CONCRETE STRUCTURE DIMENSIONS INSIDE STRUCTURE DIMEN 5ION 1 OUTSIDE STRUCTURE DIMENSION AVAILABLE OPTIO14S GROSS BRACING FOR OVERHANG HOPE ANTI -VORTEX PLATE (REQ'D) DATE: DRANq BY- APM@Y: DE7JU4. r'r.• _ I . rJ12Jj rarJl~; atLached wLth 3/6' fa atenar � f -1. y'' dJo :hgle!V 40 I L }' HOPE pSnLn �upLLorLel) �I E° - max.• ; . 42W-4 L x L , I I I ' 1 FiTIP r �;1-m1-r_j L1r;Dj pjnst iti veal}- ; 1501 i:i 13'IJi 114" Pl iit c 1 MCMIJ'rI41,LLrv.d 4y ?JoL+i,jw ?cruElans rnr or equal. 000 0000 it }':,� ,4•aCl6 re - + shaxTJ VLth ♦optional p[a�f 'irSpF -11r11r11-1rnI plpallr w0 :-1 }B' hales an-d i/4' pLa' L L�IELLSLLeaatured by PJJsatly aLwkanna I^tn. or equal 6fil9- dia. Fr'gople , G C00 O, A la B71Tf' ' airs I rYc3 Eo uri.l�r+. ' FLAt T(C P.O. F11a7i c�32if1 7'-�` j �},y+T ��SOLUTIONS 1{ 1 EB J 1 1 CAGE 1 I {�T 7 �r 7�� SOLD L 101yS kir1C2:�:Br 'vh 22UA 1 N, C. 877-877--b727 (OR EQUIVALENT) 11V1_ple'VLLti EC;L'LLM CIIIH EMBANKMENT NOTES: AFTER AN INVESTIGATION OF THE SITE's SOILS, SITE VISITS, AN ANALYSIS OF THE SURVEYED TOPOGRAPHY AND AN EXAMINATION OF VA DEQAPPENDIX A: EARTHEN EMBANKMENT (REQUIREMENTS vs. RECOMMENDATIONS), THE APPLICANT HAS PROVIDED A COMPREHENSIVE EMBANKMENT DESIGN THAT DOES NOT NEED A GEOTECHNICAL STUDY AT THIS TIME. SUCH IS THE CASE DUE TO THE PRECAUTIONARY EMBANKMENT DESIGNS PROPOSED. A SUMMARY OF THE EMBANKMENT DESIGN REQUIREMENTS ARE LISTED BELOW, MANDATING THE CONTRACTOR MEET THESE REQUIREMENTS AT A MINIMUM. THE EMBANKMENTS SHALL HAVE A COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON THIS SHEET. BERMS AND SPILLWAYS SHALL BE STABILIZED WITH EC-3 MATTING & THE REMAINING DISTURBED SLOPES SHALL BE STABILIZED WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF ML, CL, SC OR GC SOILS & BE FREE OF WOOD, ROOTS, ROCKS OR ANY OTHER NON COMPACTING SOIL. COMPACTED FILL SHALL BE PROCTOR MAXIMUM DRY DENSITY ASTM D698 AND HAVE A MINIMUM OF 95% OF MAXIMUM DRY DENSITY AND 2% OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL AND CONSTRUCTION SHALL BE APPROVED BY AN ONSITE GEOTECHNICAL ENGINEER PRESENT DURING THE CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS. SEC: TION A-9: TYPIC. Al GKAT IiF U DE T_AL S HQrnogerreous fill min Oct off trenO,- below stable Sail ix mck I ITrat�I � TYPICAL HOMOGENEOUS EMBANKMENT y T Ipe outlaLCaarzfl fiher Performed onlll�Gkor or+Ir sls FoundQtlon drain r FOUNDATION DWN drfin �-fri;InsiUarl Flier CHIMNEY DRAIN S", V12A Vr Foci outel bt Trunsktim fill "-Rock or gavel BLANKET DRAIN KQ" 9r qr9 Y.�l drain Tran2itlork filter TOE DRAIN F Eaui A-Ia. Homo eneou s Entbr;<n-kine,Ti1.s wlrS'e --page Controls N'Z,TH 0� ZSCOTT R. COLLINS'Z O U No. 35791 �SSIONAL �Aj U) z LU z z LU � O O a J < 0 O U F- z w C0 O U w ZO 0 zJUQ D O Q C� LU a 2: LULU O5 w Q w a 1■�1 � LU w w W 00 00 00 LU 1-1 1-1 1-1 Q n O\i M M W N WQ 7 w � J > U W O ZJ W U 1 Ln I- W ZU) w W J0� r�^1 V / J� 0 NW ry 0. �Q V C) N H- OLU w a U) JOB NO. 092033 SCALE AS SHOWN SHEET NO. 6 L O Tj z L,J w �z a� � w z W 0 1n z J J 0 � o L o (D c c o - U 0 U N O o -O 6 C � u o C U 0 0 a °- Ill I? cn U T -C c 0 LEGEND ROADS 0 200 24055 GENERAL NOTES 1. THE OWNER/CLIENT OF THIS PROPERTY IS. MOSS ACQUISITIONS EXISTING CULVERT 321 E MAIN STREET CHARLOTTESVILLE, VA 22902 CULVERT A VINI TY ES TA TES LLC DROP INLET &STRUCTURE NO. 455 SECOND STREET SE, 57H FLOOR CURB CHARLOTTESVILLE, VA 22902 2. THE DEVELOPER OF THIS PROPERTY IS: CURB & GUTTER RIVERBEND DEVELOPMENT, INC. 321 E MAIN ST, SUITE 201 PROPOSED PAVEMENT CHARLOTTESVILLE, VA 22902 ATTN. ALAN TAYLOR EC-3A DITCH J. THESE PLANS HAVE BEEN PREPARED BY: COLLINS ENGINEERING, INC DEPTH OF EC-3A DITCH 200 GARRETT STREET SUITE K CHARLOTTESVILLE, VA 22902 EC-2 DITCH TELEPHONE: (434) 293-3719 FACSIMILE: (434) 293-2813 4. SOURCE OF TOPO & SURVEY- SURVEY PROVIDED BY ROUDABUSH, GALE, AND DEPTH OF EC-2 DITCH ASSOCIATES, DATED AUGUST 2013. TOPO FIELD VERIFIED DECEMBER 2014. 5. ZONING. PRD-PLANNED RESIDENTIAL DEVELOPMENT ZMA 2013-016 EARTH DITCH 6. TAX MAP AND PARCEL NUMBER: 91-16C, 91-16E, 91-16A, 91-14 7. USGS DATUM: NAD 83 DRIVEWAY CULVERT 8. LOCATION/ADDRESS OF PROJECT- EAST OF AVINITY l DEVELOPMENT 9. TOTAL ACREAGE OF SITE: 13. 453 ACRES BENCH MARK 10. SITE PHASING. MAXIMUM FOUR PHASES 11. PUBLIC UTILITIES. CONNECT TO EXISTING PUBLIC SEWER AND WATER CLEARING LIMITS COLLINS ENGINEERING SHALL NOT HAVE AUTHORITY OVER CONTRACTORS WORK VDOT STANDARD STOP SIGN SAFETY PRECAUTIONS, SCHEDULES, OR COMPLIANCE WITH LAWS AND REGULATIONS. WE SHALL NOT ASSUME RESPONSIBILITY FOR ANY CONSTRUCTION STARTED PRIOR TO EXISTING CONTOUR PLAN APPROVAL. PROPOSED CONTOUR EROSION & SEDIMENT CONTROL PROPOSED SPOT ELEVATION MEASURES. TBC DENOTES TOP/BACK OF CURB STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN ACCORDANCE TAB DENOTES TOP OF BOX WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. STRUCTURAL PRACTICES USED IN THIS SECTION CONSIST OF THE FOLLOWING: 3 O1 SAFETY FENCE TROL EROSION CONTROL * HANDBIOOKRSSPECIFCATION NUMBER A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. * TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY THE PUBLIC. 0TEMPORARY DIVERSION DIKE J. APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH CAN BE CONSIDERED UNSAFE BY VIRTUE OF POTENTIAL ACCESS BY THE PUBLIC. op,3.02 CONSTRUCTION ENTRANCE.• 0a ♦ �♦ A STABILIZED PAVED CONSTRUCTION ENTRANCE WITH A WASH RACK LOCATED AT POINTS OF ST O TEMPORARY SEDIMENT TRAP 3.13 VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE. TO REDUCE THE AMOUNT OF SB ® SEDIMENT BASIN 3.14 MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE THE AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS. J. 05 SILT FENCE: lP O INLET PROTECTION 3.07 A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC STRETCHED ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED, TO INTERCEPT AND DETAIN SF x SILT FENCE 3.05 SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE, AND TO DECREASE THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE SILT FENCE BARRIERS CE CONSTRUCTION ENTRANCE J. ° SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY °n AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH). PS PS PERMANENT SEEDING 3.32 3.07 STORM DRAIN INLET PROTECTION. A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR CURB INLET. TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS ClP CULVERT INLET PROTECTION 3.08 PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. INLET PROTECTION APPLIES WHERE STORM DRAIN INLETS ARE TO BE MADE OPERATIONAL BEFORE PERMANENT STABILIZATION OF THE CORRESPONDING DISTURBED DRAINAGE AREA. 3. 09 TEMPORARY DIVERSION DIKE: DC DC DUST CONTROL 3.39 A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM UNPROTECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET. TO DIVERT SA SAFETY FENCE 3.01 SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT -TRAPPING FACILITY SUCH AS A SEDIMENT TRAP OR SEDIMENT BASIN. USE WHEREVER STORM WA TER RUNOFF MUST BE RW TEMPORARY RIGHT-OF-WAY 3.11 TEMPORARILY DIVERTED TO PROTECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON SITE DURING CONSTRUCTION. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 DIVERSION MONTHS OR LESS, WHICH CAN BE PROLONGED WITH PROPER MAINTENANCE. J.IJ TEMPORARY SEDIMENT TRAP. A TEMPORARY PONDING AREA FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A TABLE 3.39-A ADHESIVES USED FOR DUST CONTROL Water Application Dilution Type of Rate Adhesive (Adhesive: Water) Nozzle Gallons/Acre Anionic Asphalt Emulsion 7:1 Coarse Spray 1,200 Latex Emulsion 12.5:1 Fine Spray 235 Resin in Water 4:1 Fine Spray 300 Acrylic Emulsion (Non -Traffic) 7:1 Coarse Spray 450 Acrylic Emulsion (Traffic) 3.5:1 Coarse Spray 350 Source: Va. DSWC STONE OUTLET. TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS LONG ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. USE BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA IS LESS THAN 3 ACRES WHERE THE SEDIMENT TRAP WILL BE USED NO LONGER THAN 18 MONTHS, AND IT MAYBE CONSTRUCTED EITHER INDEPENDENTLY OR IN CONJUNCTION WITH A TEMPORARY DIVERSION DIKE. J.14 TEMPORARY SEDIMENT BASIN. A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE STRUCTURE FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS IN "WET" AND `DRY" STORAGE LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA lS EQUAL TO OR GREATER THAN THREE ACRES. THERE MUST BE SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY FOR THE CONSTRUCTION OF A TEMPORARY IMPOUNDMENT. J.18 OUTLET PROTECTION. STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. 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. J.19 RIPRAP: A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE WITH FILTER FABRIC OR GRANULAR UNDERLINING. TO PROTECT THE SOIL FROM THE EROSIVE FORCES OF CONCENTRATED RUNOFF, SLOW THE VELOCITY OF CONCENTRATED RUNOFF WHILE ENHANCING THE POTENTIAL FOR INFILTRATION, AND TO STABILIZE SLOPES WITH SEEPAGE PROBLEMS, AND/OR NON -COHESIVE SOILS. USE WHEREVER SOIL AND WATER INTERFACE AND THE SOIL CONDITIONS, WATER TURBULENCE AND VELOCITY, EXPECTED VEGETATIVE COVER, ETC., ARE SUCH THAT THE SOIL MAY ERODE UNDER THE DESIGN FLOW CONDITIONS. 3.31 TEMPORARY SEEDING. THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING TOTAL LBS GENERAL SLOPE OR LESS) WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS TO REDUCE EROSION AND (3:1 PEB_AGBE SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND KENTUCKY 31 FESCUE 128 LBS. RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE PROTECTION TO BARE SOILS RED TOP GRASS 2 LBS. EXPOSED DURING CONSTRUCTION UNTIL PERMANENT VEGETATION OR OTHER EROSION CONTROL SEASONAL NURSE CROP 20 LBS. MEASURES CAN BE ESTABLISHED. 150 LBS 3.32 PERMANENT STABILIZATION: SEASONAL NURSE CROP THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING FEBRUARY 16 THROUGH APRIL ANNUAL RYE SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS TO MAY 1 THROUGH AUGUST 15 FOxTAIL MILLET PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT IS ECONOMICAL, ADAPTABLE TO AUGUST 16 THROUGH OCTOBER ANNUAL RYE SITE CONDITIONS, AND ALLOWS SELECTION OF THE MOST APPROPRIATE PLANT MATERIALS. TO NOVEMBER THROUGH FEBRUARY 15 WINTER RYE IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCTION ACTIVITIES, ALL AREAS WILL RECEIVE A PERMANENT VEGETATIVE COVER. NOTES: 3.39 DUST CONTROL: 1LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION AND TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32 CONSTRUCTION ACTIVITIES TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY 2 SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION PRESENT HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35- DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WITH THE npS PERMANENT SEEDING SCHEDULE VESCH. EROSION 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 VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULA TIONS. 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-J.-ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. ES-4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SI TE A T ALL TIMES. ES-5: PRIOR TO COMMENCING LAND DISTURBING ACTI VI TIES 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-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ES-7.-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-8: DURING DEWA TERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED WATER FILTERING DEVICE. ES-9: 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. EROSION CONTROL NOTES 1. 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. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS J. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. 5. 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. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. 7. 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. 8. DURING DEWA TERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. 9. 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 IMMEDIA TEL Y. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7.• OOAM TO 9: OOPM. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAN MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE 0 SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. 17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50150 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE OR IN MARCH AND APRIL TO CONSIST SIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 957. KENTUCKY 31 OR TALL FESCUE AND 0-59 PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 19. MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIR IMMEDIA TEL Y. SIL T TRAPS ARE TO BE CLEANED WHEN 507 OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DYKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIA TEL Y. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 21. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WITHIN 1 YEAR OF THE DATE OF APPROVAL. (WATER PROTECTION ORDINANCE SECTION 17-204G.) 22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MONTHS AFTER THE DATE THE LAND DISTURBING ACTIVITY COMMENCED. (WATER PROTECTION ORDINANCE SECTION 17-207B) SOIL DESCRIPTION 71 B - RABUN CLAY LOAM-29' TO 77 SLOPES. SOIL IS WELL DRAINED, WITH MORE THAN 80 INCHES TO THE WATER TABLE. MADE FROM RESIDUUM WEATHERED FROM GREENSTONE, THIS SOIL HAS CONVEX DOWN AND ACROSS -SLOPE SHAPE. NO FREQUENCY OF PONDING OR FLOODING, MODERA TE WA TER CAPACI TY, AND MODERA TEL Y HIGH TO HIGH KSA T. RABUN CLAY-77. TO 157. SLOPES, SOIL /S WELL DRAINED, MODERATELY 72C3 -HIGH TO HIGH KSAT, MORE THAN 80 INCHES TO THE WATER TABLE, NO FREQUENCY OF PONDING OR FLOODING, MODERATE WATER CAPACITY, MADE FROM RESIDUUM WEA THERED FROM GREENSTONE RABUN CLA Y-15q TO 257. SLOPES, SOIL /S WELL DRAINED, MODERA TEL Y 72D3 -HIGH TO HIGH KSAT, MORE THAN 80 INCHES TO THE WATER TABLE, NO FREQUENCY OF PONDING OR FLOODING, MODERATE WATER CAPACITY, MADE FROM RESIDUUM WEA THERED FROM GREENSTONE. NO SCALE 1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS. 3. ATTACH THE FILTER FABRIC TO (STD. & SPEC. 3.32 OF VIRGINIA EROSION & TRENCH UPSLOPE ALONG THE LINE THE WIRE FENCE AND EXTEND SEDIMENT CONTROL HANDBOOK, 3RD ED.) OF POSTS u� IT INTO THE TRENCH. LOW SIL T FENCE sF (WI TH WIRE SUPPORT) 3.05-2 NO SCALE 4. BACKFILL AND COMPACT THE EXCA VA TED SOIL. OW FL EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. EROSION CONTROL NOTES & NARRATIVE DESCRIPTION OF EROSION & SEDIMENT PURPOSE.• CONTROL MEASURES; THE PURPOSE OF THIS LAND -DISTURBING ACTIVITY IS TO CREATE A 93 LOT SUBDIVISION. THE TOTAL ACREAGE TO BE DISTURBED WITH THIS PLAN IS 11.85 ACRES. EROSION AND SEDIMENT CONTROL MEASURES: EXISTING SITE CONDITIONS IT IS ANTICIPATED THAT A CONSTRUCTION ENTRANCE, TEMPORARY DIVERSION THE EXISTING SITE IS A WOODED HILLY PARCEL. THERE ARE TWO EXISTING HOUSES THE SITE IS GENERALLY WELL DRAINED WITH SOME CRITICAL SLOPES. EROSION AND SEDIMENT CONTROL MEASURES HAVE BEEN DIKES, RIGHT OF WAY DIVERSION, SEDIMENT TRAPS AND BASINS, OUTLET DESIGNED TO CONFORM TO THE EXISTING SITE SLOPE AND PROTECT THE ADJACENT PROPERTIES. PROTECTION, INLET PROTECTION, AND SILT FENCE WILL BE INSTALLED TO ADJACENT AREAS.' CONTROL SURFACE DRAINAGE. TEMPORARY SEEDING WILL BE USED IMMEDIATELY THE SITE IS POSITIONED BETWEEN SCOTTSVILLE ROAD AND AVON STREET EXTENDED. AVINITY 1 IS WEST OF FOLLOWING ALL LAND DISTURBANCE ACTIVITIES. TEMPORARY STOCKPILE AREAS THE SITE. KAPPA SIGMA FRATERNITY HEADQUARTERS BORDERS THE SITE ON THE EAST. RESIDENTIAL LAND IS WILL BE MAINTAINED FROM TOPSOIL THAT WILL BE STRIPPED FROM AREAS TO BE NORTH AND SOUTH OF THE SITE. GRADED AND STORED FOR LATER SPREADING. STOCKPILE LOCATIONS SHALL BE OFFSITE LAND DISTURBANCE.' ON SITE AND SHALL BE STABILIZED WITH A TEMPORARY VEGETA TI VE COVER. THE SITE WILL TIE INTO THE EXISTING ROADS OF A VINI TY 1. THERE IS ALSO MINIMAL OFFSITE GRADING ALONG THE SOUTH BORDER INTO THE PEBBLE DRIVE ROW. PERMANENT SEEDING WILL BE PERFORMED FOR ALL AREAS WHICH WILL NO CRITICAL AREAS.• LONGER BE EXCA VA TED AND WHERE CONSTRUCTION ACTI VI TIES HAVE CEASED. CRITICAL SLOPES ON -SITE WILL BE PROTECTED. CARE WILL BE TAKEN TO PREVENT THE EROSION AND PERMANENT SEEDING SHALL ALSO BE PERFORMED FOR ALL DENUDED AREAS SEDIMENTATION OF THE EXISTING GRADE AND TO PROTECT NEIGHBORING PROPERTIES. WHICH WILL BE LEFT DORMANT FOR A YEAR OR MORE. SELECTION OF SEED SOILS.' MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. TEMPORARY SEEDING SEE SOILS BOUNDARIES ON THE EROSION AND SEDIMENT CONTROL PLAN PHASE 1 SHEET, AND DESCRIPTIONS WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT ON THIS SHEET. FOR MORE THAN SEVEN DAYS. THESE AREAS SHALL BE SEEDED WITH FAST SEQUENCE OF CONSTRUCTION. GERMINATING VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS. 1. NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE -CONSTRUCTION MEETING AS REQUIRED. 2. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. APPROVAL FROM THE INSPECTOR ON THE PROJECT. J. INSTALL THE PAVED CONSTRUCTION ENTRANCE WITH WASH RACK AS SHOWN ON THE PLANS. 3.01 SAFETY FENCE - SAFETY FENCE WILL BE INSTALLED AROUND ALL CONSTRUCTION ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED PROPOSED SEDIMENT BASINS AND SEDIMENT TRAPS. PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) 3.02 CONSTRUCTION ENTRANCE - ONE CONSTRUCTION ENTRANCE SHALL BE TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD INSTALLED AT WESTHALL DRIVE. THIS WILL BE THE ONLY POINT OF INGRESS SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL AND EGRESS TO THE SITE. CARE WILL BE TAKEN TO PROTECT ADJACENT DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS ROADWAYS FROM TRANSFER OF SEDIMENT. MANNER. INSTALL THE WASH RACK UPHILL FROM PROPOSED SEDIMENT BASIN #1. ACSA WILL DETERMINE 3.05 SILT FENCE- SILT FENCE WILL BE PLACED ON THE DOWNSTREAM SIDE OF THE APPROPRIATE METHOD OF SUPPLYING THE WASH RACK. PARKING AND CONSTRUCTION ENTRANCE DISTURBANCE WHERE NOTED ON THE PLANS. AREAS SHALL BE CLEARED OF ALL VEGETATION, ROOTS, OR OTHER OBJECTIONABLE MATERIALS BEFORE 3.07 STORM DRAIN INLET PROTECTION- IP WILL BE INSTALLED ON EACH CONSTRUCTION ROAD STABILIZATION IS INSTALLED. PROPOSED INLET AS SHOWN ON THE PLANS. 4. INSTALL THE INITIAL CONSTRUCTION MEASURES AS SHOWN ON THE PHASE I EROSION CONTROL PLAN SHEETS. THIS INCLUDES THE SEDIMENT BASIN, SEDIMENT TRAP, SILT FENCE, ROW DIVERSIONS DIVERSION 3.09 TEMPORARY DIVERSION DIKE- DIVERSION DIKES WILL BE USED AROUND THE DIKES, AND DRAINAGE PIPES SHALL ALSO BE INSTALLED AT THIS TIME. STABILIZATION MEASURES SHALL PERIMETER OF SITE DISTURBANCE WHERE SHOWN ON THE PLANS TO DIRECT BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES, AND DIVERSIONS IMMEDIA TEL Y AFTER RUNOFF TO ON -SITE SEDIMENT CONTROL FACILITIES. INSTALLATION. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH 3.13 TEMPORARY SEDIMENT TRAP- TEMPORARY SEDIMENT TRAPS WILL BE ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE INSTALLED WHERE SHOWN ON THE PLANS. TAKES PLACE. 3.14 TEMPORARY SEDIMENT BASIN- TEMPORARY SEDIMENT BASINS WILL BE 5. INSTALL ANY REMAINING EROSION CONTROL ITEMS AS SHOWN ON THE PHASE I EROSION CONTROL PLAN. 6. ONCE ALL THE EROSION CONTROL ITEMS HAVE BEEN INSTALLED AS SHOWN ON THE PHASE I EROSION INSTALLED WHERE SHOWN ON THE PLANS. CONTROL PLAN AND THE INSPECTOR HAS APPROVED THE EROSION CONTROL MEASURES, THE CONTRACTOR 3.18 OUTLET PROTECTION- TO BE PROVIDED AT THE OUTFALL OF DRAINAGE CAN BEGIN GRADING OPERATIONS. PIPES WHERE SHOWN ON PLANS 7. ROUGH GRADE THE SITE TO THE CONTOURS SHOWN ON THE EROSION CONTROL PLAN. 3.19 RIPRAP- RIPRAP SHALL BE INSTALLED AS OUTLET PROTECTION WHERE 8. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN SHOWN ON THE PLANS. 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 AT FINAL GRADE BUT WILL 3.31 TEMPORARY SEEDING- TEMPORARY SEEDING SHALL BE APPLIED WHERE REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE SHOWN ON THE PLANS. APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 3.32 PERMANENT SEEDING- PERMANENTLY SEEDING SHALL BE APPLIED WHERE 9. INSTALL THE CONSTRUCTION MEASURES AS SHOWN ON THE PHASE ll EROSION CONTROL PLAN SHEETS. SHOWN ON THE PLANS. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND 3.39 DUST CONTROL- DUST CONTROL SHALL BE APPLIED THROUGHOUT THE SITE DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES WHERE SHOWN ON THE PLANS. PLACE. THE CLUBHOUSE AND DRY DETENTION BASIN WILL NOT BE INSTALLED UNTIL AFTER UPLAND AREAS ARE SUFFICIENTLY STABILIZED AND SEDIMENT BASIN 1 WALLS CAN BE INSTALLED TO OBTAIN THE FINAL DETENTION BASIN FOOTPRINT THE PLUNGE POOL RISER AND BARREL OUTFALL WILL NOT BE STORM WA TER MANAGEMENT.• INSTALLED UNTIL UPLAND AREAS ARE STABILIZED AND SEDIMENT TRAP 2 CAN BE CONVERTED. STORMWATER RUNOFF QUANTITY WILL BE TREATED ON -SITE THROUGH TWO DRY 10. INSTALL THE UTILITIES, CURB AND GUTTER, AND ROADS. INLET PROTECTION SHALL BE INSPECTED AFTER DETENTION BASINS. THE PROJECT WILL PRESERVE OPEN SPACE AND ADDITIONAL EACH RAINFALL EVENT AND REPAIRS SHALL BE MADE AS NEEDED. IF THE STONE FILTER BECOMES WATER QUALITY SHALL BE TREATED THROUGH THE PURCHASE OF CREDITS. SEE CLOGGED Wl TH SEDIMENT SO THA T l T NO LONGER ADEQUA TEL Y PERFORMS I TS FUNCTION, THE STONE MUST STORM WA TER MANAGEMENT PLAN SHEETS. BE PULLED AWAY AND CLEANED AND/OR REPLACED. INSTALL ANY REMAINING EROSION CONTROL ITEMS AS SHOWN ON THE PHASE ll EROSION CONTROL PLAN. 11. UPON INSPECTOR APPROVAL, THE SEDIMENT BASIN 1 WALLS MAY BE INSTALLED TO ALLOW THE CLUBHOUSE AND SLOPE BEHIND THE CLUBHOUSE TO BE REGRADED, AND THE DRY DETENTION BASIN FINAL FOOTPRINT TO BE INSTALLED. 12. ONCE PHASE ll OF CONSTRUCTION IS COMPLETE, THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR CAN REMOVE THE EROSION CONTROL MEASURES. NO ITEM SHALL BE REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES PERMISSION. MAINTENANCE.' 13. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN IN GENERAL, DURING CONSTRUCTION THE RLD OR CONTRACTOR ON -SITE WILL CHECK ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. ALL EROSION AND SEDIMENT CONTROL MEASURES DAILY AND AFTER EACH 14. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER SIGNIFICANT RAINFALL. MONITORING REPORTS WILL BE REQUIRED FROM THE RLD IF FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS NEEDED. SPECIFIC ATTENTION WILL BE GIVEN TO THE FOLLOWING ITEMS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED a. SEDIMENT BASINS AND/OR TRAPS WILL BE CLEANED AND MAINTAINED IN SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK. STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. b. ALL INLET PROTECTION AND GRA VEL OUTLETS WILL BE CHECKED REGULARL Y FOR SEDIMENT BUILDUP THAT WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT, THE GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL BE REPLACED. c. ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO THE TOP OF THE BARRIER. d. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED. IN CASE OF EMERGENCY, THE PRIMARY CONTACT FOR THE PROJECT WILL BE THE RLD OR CONTRACTOR ON -SITE. THE CONTRACTOR WILL BE DETERMINED AT THE TIME THE CONTRACT IS AWARDED. IN ADDITION THE OWNER MAY BE CONTACTED, MR. ALAN TAYLOR. UPON COMPLETION OF THE PROJECT, THE OWNER WILL BE RESPONSIBLE FOR SITE MAINTENANCE. CURB INLET__ _ -- --- CONCRETE BLOCK GRAVEL* FILTER OR #5 COARSE AGGREGATE. OBLOCK & GRAVEL CURB INLET3� P SEDIMENT FILTER NO SCALE La d SECTION A -A PIPE OUTLET TO FLAT AREA WITH NO DEFINED CHANNEL La 0 °� �� g - PLAN SECTION A -A a PIPE OUTLET CONDITIONS 3.18-1 NO SCALE ALBEMARLE COUNTY CONSTRUCTION ENTRANCE m RAW 70' MIN. i-r SM-2A ASMMLT TOP OMM --A4- ---W" 21A DIVERSION DITCtI SIDE ELEVATION AGGREGATE BASE TING UND 7 70' MIN. EX. CURB OR Air PAWMIASNYNLYC EDGE OF PAV'T zx 3 12' MIN. `� EbSTING y%y PAVEMENT DIVERSION DITCHsmaw MINI1RNRNQ OlVIC[ SAT Et.EVAnGN IS 4.0' PLAN VIEW MUST EMEND FULL WIDTH OF INGRESS AND EGRESS OPERATION SET 1 1/2- WATER HYDRANT VKH FROST . MIN. PROOF HYDRANT �12 ABOVE GRADE AND4' 2X- OFF EDGE OF PAVEMENT. SECTION A -A NOTE: A MINIMUM WATER TRAP OF 1' IS REQUIRED WITH A MINIMUM MASH HOSE DIA. OF 1.5' S PAVED TEMP COMT &M 9 SC4E N.T.S. TABLE 3.31-B ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS "QUICK REFERENCE FOR ALL REGIONS' Rate Planting Dates 5yecies lbs. acre Sept. 1 - Feb. 15 50150 Mix of Annual Ryegrass (Lolium multi-florum) & 50 - 100 Cereal (Winter) Rye ( cwc-cereale) Feb. 16 - Apr. 30 Annual Ryegrass 60 - 100 (Loiium multi=florum) May 1 - Aug 31 German Millet 50 (Setaria italics) Source: Va. DSWC 071 OSCOTT R. COLLINS,7' ,T-) No. 35791 111�;, ZONAL E� z z O '-'-I � a J Q O U w co Zz J U O� 0 � a H w z o U) LU H c1f W Ce 00 00 00 w QO\l M Ul z J J 0 U C3� r C`7 C'7 N C'7 I N N N \Q L J_ U) LU 0 U I i LU t rD V LU LU U) LU 01f L.L V O N U LU O 0r a z LU G 0 z LU G Q z Q _j a- 0 a- 3: Cn LU V1 LU H� z I -I Q vJ w 0 \w z J 0/ L.L z 0 U z Cw G w 0 W z 0 U) 0/ 0. w H w w JOB NO. 092033 SCALE ill =50' SHEET NO. 7 o � z °w �w z a C ° z w 0 � cn, z w J coo U 0 T zcn, 0 0 0 o w cn 2 � 0- a x 0 L al 0 a z - 0 0 E T cn z n w W 0 w u z O z w� z w o 0° C 0 Q� of a o O 0 x E m 0 0 � 0 0 � o > 0 cn � 0 -c' 0 0 0 > cn 0 a, 0 0 � I cn C 0 w Q 0 Q iv >, w � � o ROPOSED SAFETY FENCE SAF SWM FOREST &OPEN SPACE PRESERVATION l I / �°r \ \ <� % / \9 \ \((� (I (1 I ��M _ \ SHALL REMAIN OUTSIDE LIMITS wTo s \ OF DISTURBANCE 00 LIMITS OF DISTURBANCE i / PROPOSED SAFETY FENCE NSTALL SIGNS WARNING: °, SAF QUICK SAND, KEEP OUT" \ y h \ \ `Or PROPOSED 55' EARTHEN SWM-F-ACI EMERGENCY SPILLWAY ELEV.=496.33 TOP OF DAM =497.50 G PROPOSED PAVED \ \ rt rtrt vP E V A CONSTRUCTION ENTRANCE' /� I ��=_1t "��! Orre / IP / -o \ \ PROPOSED8 CL. II RCPBARREL\\ A I _ _ V N; =0.=4884� IN k R ROW DIVERSIO Z VA V INV OUT=488.00 l — / PROPOSED TAPE - 0b5_ A 48" CL. III RCP RISER XI�\w \ \2-e3- RIM=495.33 \ \ \ \ \ STONE OUTFALL INTO BASIN \ Vv yAv 5'Wx58'Lx2'D (TYP.) DD PROPOSED 24 DIVERSION BER LEGEND LEGEND - - - - - - - - - - - LIMITS OF LAND DISTURBANCE SF SILT FENCE PER VESCH 3.05 DIVERSION DIKE SSF SUPER SILT FENCE PER VESCH 3.05 ■ ■ BOUNDARY LINE V V SILT FENCE DIVERSION DIKE PER VESCH 3.09 f DIRECTION OF FLOW ST SEDIMENT TRAP PER VESCH 3.16 653.75 PROPOSED CONTOUR DRAINAGE DIVIDE CE CONSTRUCTION ENTRANCE PER VESCH 3.02 ® CULVERT INLET PROTECTION OP OUTLET PROTECTION PER VESCH 3.18 CIP CULVERT INLET PROTECTION PER VESCH 3.08 SOILS LINE BEM SOIL STABILIZATION MATTING VESCH 3.36 DRAINAGE WAY 1992 3.01 II �IIIII� ■ ��`��lti•IL�r i+i•i i iiii i+i+i+i ii•i' �T�,�,' i` ilia+i �i+i•�•�+•+i+iiii+i� A J� I 1 � \� v A \ V \\�\A \\ Source: Adapted from Conwed Plastics and Plate 3.01-1 VDOT Road and Bridge Standards SEDIMENT BASIN 1 PHASE I \ \ \ n1 5 7.95 ACRES , D — — - Cw=0.45 paved consiruction entrance for erosion control Tana STONE C••�O�nNfS��T{RRUCMN .++ 5n ACCPS$ �• S' S71'"ih .'r�'F"{�) TOP COURSE EXISTING as zx r PAVEVENr - 1 -b- M % 2'A A0GREGATE BASE EMILE ?w MIN, SIOkE CONSIRUCTION ASPiIAI.7 PAVED ACCESS WASKkACK PAvEil� �x 2% 1 2' *N�xx , } dRiuwtiGE 9wUv LMNO FULL Wulf-t I--.O 1— TO OF INGRESS AND EGRESS !I TO S�AILAfriT TRA-INGj 11.1llCF OPERA'MN PLANA ■ 12' Wk !YE DRAINAGE Ta aVENT - 1;i APPING atywi FILTER Ci.4;Fl SECTION A -A A ininu [ in walei 11v 0 1 tlkh Illtt:t bt: 11WI.A(Al 1S'11t11 LIWL1i111Li1I I 1110k b.11111L0%;I: 411114t'vah-e A4)It-11111a w-w4I ltv`v wilh a cWmelrl of 1 4 vklxes tar Atle(11131e COL0alit pies 111e W1.I1 waiel LLL11LA be iallleil away ti[11ti IIIe varpAsR-C ri1 all 011;p1 oved .eitluL211 to lip l allove TC(talleal _11It r:4'Lj1LLlFlll A1.111 I le 1 i1 to elWed ti OIL[ eutniug Stn1111 L11 MF. ClIklI S Ot W 1tCl CUM Sea. PAVED WASH RACK \S'COTT R. COLLINS � U No. 35791 I�Ll ZONAL E� z z � O 0 a 0 z w co� 0 U w Z 0 oJU¢ D J V / I— [Z W O H w z 0 w Q (w �J j LU LU cl- H 0 Ln w W Ce w Q-1 00 —4 tb tb M � i —1r1j \i M N r� NOTE: CONTRACTOR SHALL AVQ0sACTION IN Tc=13.2 min. iDRY SWALE LOCATIONS. STEEEPHASE)I(TKA --- _--�—\ PROPOSED 24" DIVERSION BERL9— — O TS / / \ v ti y /, / wv Any EX STRUCTURE 0-1 TO BE REMOVED (TYP). / _ _ A I I / / A / \\ \ \ CY) TYRE � 09%— \ \ 71 B \ I A A A\ ♦/I / / V v \ V \ \ /� / / / \v \;\ \ \ / / CY) LIMITS OF DISTURBANCE �14 V -9 — \ Iz \ � '/ / 06, O DC \ - =11.84 AC. � � \ Asp v o W c�� \I U) I n o �o�� \\ v A /// // \ / v v /� // Z N LU I \.�,> 1/ 0 \ O 3H0 _3HO G3H0 —3H0 —3H0 I LL L 0 hR / J e / / o� TS / / IAoti \ \ _ LU Y EX OHE �V A\� / / \ \ \ I �/�� _�� y \ L9 1 TO BE REMOVED (TYP). / ROPO E SAFETY FENCE / O \ \ \ EX STRUCTURE oh j / h \ \ \ , \ / \ / / f \\ ` PROPOSED 24" DIVERSION /;/ LIMI 8S5 0 CDISTURBANCE / / \ TO BE REMOVED (TYP). / / / I o / / / F / / , / / Q \ ERM AND 6 X6 X2 RIPRAP \ / / v / / A�, I OUTLET PROTECTION �/ / /� / / / i \ \ ✓ � / � \,\\ \ / / / / / [� � //� � 1 � \ \/ 1 / � \ / \/ice//f/ ,Q �� /�'- j \i!'\ \ i \ � (, LLJ —AIL- A� \ PROPOSED / t/ �\ A/ — \ �%jy / /% APO - - �j \ \ / I l W V SILT FENCE, ENCE SEDIMENT TRAP 2 ( o V A \ \ \ LJ W PHASE I \ V I / i' — f/ / / / J 1 ,-/- yy �� _ _ �! — — _ 1.31 ACRES _�_Ul (%� _ _ _ Cw=0.45 1 \I 1 1 I I _ _ � y / �/ / / �; \ — / �/� V / / / \ / \ \ W _ V -- II�II y ♦ v / / / \ Tc-9 min. , PROPOSED 06 SAFETY FENCE 1 r / / I T / / / / - f �� I �A \ / / �/ / �i / / / \ \ \ Z \ i/SOIL / / / � 2 �/ -yam I,-�// \ \ / / \ W i--i U) \ / / \� O � / I J T12D3 PROPOSED 8' STONE / ,�\ / \ / \ EIR ELEV.=497.00 ,� TOP OF DAM=498.00 /- co Cn Q W U, PROPOSED 24" DIVERSION BERM ��.�� \ 1 / / / ! AND 6'Xf'X2' RIPRAP OUTLET PROTECTION v _� PR6POSED SAFETY FENCE \ \ PROPOSED �.� \. NSTALL SIGNS WARNING: SAF SILT FENCES F / ,Z QUICK SAND, KEEP OUT" \ \ I �' FQ ,�� ROPOSED SAFETY FENCE SAF \ / THE SWM FOREST AND OPEN SPACE EASEMENT IS SUBJECT TO GUIDANCE SET FORTH BY DEQ IN THE N U \ GR HIC GALE I I I I� %\ ,� VIRGINIA STORMWATER MANAGEMENT PROGRAM. THE AREAS WILL REMAIN UNDISTURBED IN A NATURAL, o w \ / \ I / I I / SWM FOREST & OPEN SPACE PRESERVATION 0 _ so 0 3o so ,zo I zao I / I / / // sHALL REMAIN OUTSIDE LIMITS VEGETATED STATE, EXCEPT FOR ACTIVITIES AS APPROVED BY THE LOCAL PROGRAM AUTHORITY, SUCH AS a �, \, A / / / / \ / /� �� \ ,� OF DISTURBANCE FOREST MANAGEMENT, CONTROL OF INVASIVE SPECIES, REPLANTING AND REVEGETATING, PASSIVE JOB NO. RECREATION (E.G., TRAILS), AND LIMITED BUSH HOGGING TO MAINTAIN DESIRED VEGETATIVE COMMUNITY 092033 \ \ J (BUT NO MORE THAN FOUR TIMES A YEAR). ( IN F ET ) \ / ,' SCALE \ \ \ \ I incIv = 60 ft. / / /� l /� l 1 / /� \ / / j / .'� 1 11 = 60' \ '/✓ \ \ / / / / / / / �11 / /Ln \j / /�\ NOTE: ANY FOREST & OPEN SPACE PRESERVATION AREA THAT WAS PREVIOUSLY DISTURBED BY THE CONSTRUCTION OF THE AVINITY I POND (OR DISTURBED WITH THIS CONSTRUCTION) SHALL BE RESTORED SHEET NO. USING DEQ BMP SPEC. 4, SOIL AMENDMENTS. 8 LEGEND LEGEND -- LIMITS OF LAND DISTURBANCE SF SILT FENCE PER VESCH 3.05 ' ' ' DIVERSION DIKE tanlevMartin SFA Erosion and Sediment Control Plan SSF SUPERSILT IONDINCEPERVESCH3.05 � ■ ■ � BOUNDARY LINE riCOTT ;Mt�°T,/ SILT FENCE BB DIVERSION DIKE PER VESCH 3.09 R. COLLINS� SEDIMENT TRAP PER VESCH 3.16 No. 35791 1�-1 DIRECTION OF FLOW 653.75 PROPOSED CONTOUR CE CONSTRUCTION ENTRANCE PER VESCH 3.02 0 �w4 o ■ ■M DRAINAGE DIVIDE G I0 Anor \/ qE� NAL ROPOSED SAFETY FENCE SAF CULVERT INLET PROTECTION OP OUTLET PROTECTION PER VESCH 3.18 CIP CULVERT INLET PROTECTION PER VESCH � SWM FOREST &OPEN SPACE PRESERVATION / / I ✓ I / < \ < ( ��M — SHALL REMAIN OUTSIDE LIMITS 3.08 l ) °r V / / / � fl) 1�1 I�1 � OF DISTURBANCE / I I I SOILS LINE SOIL STABILIZATION MATTING VESCH 3.36 LIMITS OF DISTURBANCE DRAINAGE WAY 11.71 AC. ONCE UPLAND AREAS ARE STABILIZED THE LUBHOUSE, WALLS, AND DRY DETENTION BASIN CAN BE INSTALLED (WITH INSPECTOR APPROVAL) -- // PROPOSED SAFETY FENCE /\ NSTALL SIGNS "WARNING: SAF _ ---- - - QUICK SAND, KEEP OUT" _ ------- PROPOSED 55' EARTHEN SWM-FACT 1( ��`�\ \ EMERGENCY SPILLWAY \� - \�ELEV.=496.33 TOP OF DAM=497.50 PROPOSED 18" CL. II \FRCP BARREL— II_AUNV $N_ 488.44 "—ANV OUT=48§.00 \PR6POSED IP 48 CL. III RCP RISER / \ RIM=495.33 /I P � SEDI T BASS{ 1 <p T9 \ 1I I \� \ \ \ \\\\��\ \S.IP PH 11 \\ \ 7.�S ACRES.` \ \ $= 0. 7 5 1$ ! s9 !or I P �3 / I III \\ \ \ \ \ \ I l vv�w Z w z 0 o z o Lu � d Z w m O w p D J Z0�0Q > a m O w � z o w Q � w w F■1 o V) w W �` w 00 00 00 Luti co iM — N v M e 1 I _ \ '(0 w 0 W W LIMITS OF DISTURBANCE ! •St — — °T's p IP �/ j / 0,� =11.84 AC. // koWr Q Q 2 2F W LuC < / / —j Z T G J _ IU) Z PROPOSED SILT FENCEW OWNSTREAM OF ROADWAY �� i r Q J 0 — — — _ _� IMPROVEMENTS / \� \ / •. w T8a I !oT / a �, / /�+Zv � � � I /////// / � / �\ \\\ � zti L.L BACK OF LOTS SHALL BE CONTROLLED WITH SILT FENCING, YARD DRAINS SHALL REMAIN / / // / / / / I / �: /� — _ Z OFFLINE UNTIL UPLAND AREAS ARE STABILIZED IP /IP R PO ED AFETY FENCE=�/10 LIMI S OF DISTURBANCE / �� / � �e W \ W ul Lu WALLS SHALL BE �/� W \ \ \ �/ w \ ♦ / / / — / N STALLED WITH �ROPO E��-DE_SAC I I I o V A I IP�, __ / ,�� I ■II■II/ PROPOSED SAFETY FENCE I / / / EDIMENT TRAP 2 \ I r ACRES / PROPOSED 8' STONE EIR ELEV.=497.00 �� 1 c \ /// / / / ♦'� TOP OF D>p 498.00 /LUNGIE P60L RISER AND / / / \ \ V ARREL SHALL BE INSTALLED / O WITH THE ESC TO SWM CONVERSION / / i - GRAPHIC SCALE � J, \ S . - - / / �' / / / / / / / --- N F- Lu Lu / so o ao so 1 o zoo I \ V �\ / % / A / // / / / 0 Lu z PR6POSED SAFETY FENCE / NSTALL SIGNS "WARNING: SAF / / ( � / I I I / JOB NO. IN FEET �) I 1 / i j// QUICK SAND, KEEP OUT" / / / / / \ 092033 1 inch = 6 ft. \ p // I / SCALE �. / / ROPOS��ED SAFETY FENCE SAF / / / , / / — 1 _ 11 60 ' � _ F \, / / � SWM FOREST &OPEN SPACE PRESERVATION / � / � \ � / / SHEET NO. SHALL REMAIN OUTSIDE LIMITS / / / 1 OF DISTURBANCE / 9 SEDIMENT BASIN SB-1 SCALE: 1 "=40' � h h moos / SB1 PROPOSED SAFETY FENCE NSTALL SIGNS "WARNING: QUICK SAND, KEEP OUT" PROPOSED 55' EARTHEN EMERGENCY SPILLWAY \ ELEV.=496.33 \ TOP OF DAM=497.50 pP � ft \ 141 SAF w \ PROPOSED 18" CL. III RCP BARREL \ =88'; S=0.5% ry\ INV IN=488.44 \ INV OUT=488.00 \ I PROPOSED 48" CL. III RCP RISER P RIM=495.33 IP SEDIMENT TRAP ST - 2 SCALE: 1 "=40' TS/ i i I o I ♦ % ♦ PROPOSED 24" DIVERSION ERM AND 6'X6'X2' RIPRAP UTLET PROTECTION PROPOSED SILT FENCE // PROPOSED 8' STONE EIR ELEV.=497.00 ' TOP OF DAM=498.00 PROPOSED 24" DIVERSION BERM AND 6'X6'X2' RIPRAP OUTLET PROTECTION PROPOSED SAFETY FENCE S A F / INSTALL SIGNS "WARNING: QUICK SAND, KEEP OUT" ll,' -PROPgSED SAFETY FENCE SAF /' �SWM FOREST & OPEN SPACE PRESERVATION / SHALL REMAIN OUTSIDE LIMITS OF DISTURBANCE / Sediment Basin #1 Design drainage area (acres) basin volumes: (using 2' contour intervals) elevation (ft) contour area (sf 488.00 1946.0 490.00 2890.0 492.00 3975.0 494.00 5200.0 496.00 6566.0 497.50 7682.0 wet storage: wet storage required (cy) (67*DA) dewatering orifice elevation (ft) wet storage provided at this elevation (cy) available volume before cleanout (cy) (min. 34*DA) cleanout elevation (ft) distance from cleanout to orifice (ft) (> 1') dry storage required (cy) (67*DA) principle spillway crest (ft) dry storage provided at this elevation (cy) diameter of dewatering orifice (in) diameter of flexible tubing (in) (orifice+2") C (use 0.45 for bare earth) tc (min) 12yr 3.7 1 25yr 5.5 available head (ft) diameter riser (in) spillway capacity, Qp (cfs) diameter trash rack (in) barrel length (ft) head on barrel through embankment (ft) diameter of barrel (in) Q 2yr Q 25yr MIN. 1:WISPILLWAY CREST OF EMERGENCY 2' WITHOUT SPILLWAY 7.95 DESIGN HIGH WATER (25-YR. STORM ELEV.) volume (cy) 0 MIN. 1.0----------------- ' 178.0 RISER CREST ' DRY ' STORAGE DEWATERING 431.2 DEVICE 770.0 WET ' STORAGE 1204.8 - m! 1600.1 SEDIMENT CLEANOUT POINT (' WET " STORAGE REDUCED TO 34 C.Y./ ACRE) 532.7 design high water (ft) 496.33 492.60 top of dam (ft) 497.50 532.7 top width of dam (ft) 10.0 270.3 bottom of basin (ft) 488.00 490.73 approx. bottom dimensions: 31'x70' 1.87 upstream face slope: 2:1 downstream face slope: 3.1 532.7 baffles: NO 495.33 length of flow, L (ft) 120 532.7 effective width, We (ft) 33 5.0 L / We (baffles not required if > 2) 3.60 7.0 collars: YES depth of water at spillway crest (ft) 7.33 0.75 slope of upstream face (ZA) 2:1 12.6 slope of barrel (Sb) 0.50% 22.1 length of barrel in saturated zone (Ls) 44.88 36.1 number collars required 2 dimension of collars 4.2'x4.2' 1.00 emergency spillway: YES 48 required capacity (Q25-Qp) (cfs) 21.1 15.00 bottom width (ft) 55 72 slope of exist channel (ft/ft) 33% 88 minimum length of exit channel (ft) 16 8.33 crest of spillway (ft) 496.33 18 Sediment Trap 2 design drainage area (acres) (<3) 1.31 T' I VARIABLE* trap volumes: ORIGINAL CREST OF STONE WEIR LVARIABLE* elevation (ft) area (sf) volume(cy) GROUND 491.00 156.0 0.0 ELEV. ` 492.00 335.0 8.9 DRY STORAGE N VARIABLE' 494.00 783.0 49.1 496.00 1344.0 127.0 497.00 1662.0 182.5 WET STORAGE (EXCAVATED) ` 498.00 2005.0 250.4 CLOTH ORIGINAL GROUND ,PETER ELEV. wet storage: �� wet storage required (cy) (67*DA) 87.8 -SEE PLATE 3,13-1 COARSE AGGREGATE CLASS I RIPRAP bottom of stone weir (ft) 495.1 wet storage provided at this elevation (cy) 91.1 slope of wet storage sides 2:1 weir length (ft) (6xDA) 7.9 dry storage: bottom of trap elevation (ft) 491 dry storage required (cy) (67*DA) 87.8 bottom trap dimensions: 5'X35' crest of stone weir 497.0 top of dam elevation (ft) 498 dry storage provided at this elevation (cy) 91.1 top width of dam (ft) 4 slope of dry storage sides 2:1 top trap dimensions 29'X65' F'S(COTT R. COLLINS'� ,C-) No. 35791 111 z ; z O LU I U w In In I � I Z o z � J O 0 0 LU a- I LU cl� W I LU I W H � I I I W tie DD DD DD LU-4 -4 . 4 Q M -4 m n L9 C`7 Zcyi N C'7 N U) W � z N L Q N 2: F- W Q o w > z 0 ZJ J ": 0 w z z L9LU Q O � � U Z� O z 0� Q � L W U o Lu W U) UlLU (1) Z D L O Z`n 0 LLU z LU J > J� L �Q V O N F- LU rn LU W a � JOB NO. 092033 SCALE lit =40' SHEET NO. 10 co co _0(D- a) X U I D I TD = L 0 0 O� C:L_ E � U .> C)cn ° 0 0 cn APPENDIX 9 Record of Public Availability Record of Public Viewing Site: Stanley Martin at Avinity Estates Date Requested Requested By Location of Viewing Date of Viewing Comments Initials APPENDIX 10 Miscellaneous L:\30000s\30300\30339.01\GIS\SWPPP\30339.01 01 Vicinit .mxd 0 G r+ x m qOc� Fr s1�N J Albemarle County Ty VA Project Area Vicinity Map - Stanley Martin at Avinity Estates WSSI #30339.01 NORTH 0 500 Feet Original Scale: 1"=500' Source: Bing Maps Road - © 2017 HERE © 2017 Microsoft Corporation Wetland Studies and Solutions, Inc. Exhibit 1 a DAVEY. company Q Project Area USGS 7.5' Quadrangle Map Stanley Martin at Avinity Estates WSSI #30339.01 Simeon, VA 1991 Alberene, VA 1991 Longitude: 78°29'54"W (78.498333°) Latitude: 37°59'33"N (37.9925°) Hydrologic Unit Code (HUC): 020802040402 HUC12 Name: Moores Creek COE Region: Eastern Mountains and Piedmont NORTH 0 1,000 Feet Original Scale 1 " = 1,000 ' Wetland Studies and Solutions, Inc. a DAVEY. company Exhibit 2 L:\30000s\30300\30339.01\GIS\SWPPP\30339.01 03 NWI.mxd }a � Cai � a \ kxe F Op 1�7 R4SBC SGo��s�i\\end = Project Area Wetland Type 0 Open Water 0 Freshwater Forested/Shrub Wetland 0 Freshwater Emergent Wetland Estuarine and Marine Wetland Other Source: U.S. Fish and Wildlife Service Digital National Wetlands Inventory Map Stanley Martin at Avinity Estates WSSI #30339.01 NORTH 0 500 Feet Original Scale 1"-500' Wetland Studies and Solutions, Inc. a DAVEY company Exhibit 3 0 Project Area Spring 2017 Natural Color Imagery Stanley Martin at Avinity Estates - WSSI #30339.01 NORTH 0 500 Feet Original Scale: 1"=500' Source: Pictometry® Wetland Studies and Solutions, Inc. Exhibit 4 a DAVEY. company VIRGINIA Di Y.1H'IAI��I'I' OF FNVIRONNIE\ZAI_ QLALITY James River Basin Cause Group Code: H28R-02-BEN Fact Sheets for Impaired (Category S) Waters in 2016 Moores Creek Location: Moores Creek from its confluence with the Ragged Mountain Dam receiving stream downstream to the RWSA Moores Creek STP bridge. (Start Mile: 6.86 End Mile: 0..54 Total Impaired Size: 6.32 Miles) City / County: Albemarle Co. Charlottesville City Use(s): Aquatic Life Cause(s) / VA Category: Benthic-Macroinvertebrate Bioassessments / 5A This segment is impaired due to violations of the General Standard for Benthics at station: 2-MSC000.60 (Impaired for VSCI); 2- MSC-MSC04-SW (Impaired for VSCI) and 2-MSC-MSV12-SW (Impaired for VSCI). Initial Listing Date: 2008. Moores Creek Estuary Reservoir River Aquatic Life (Sq. Miles) (Acres) (Miles) Benthic-Macroinvertebrate Bioassessments - Total Impaired Size by Water Type: Sources: Municipal (Urbanized High Density Area) Non -Point Source 6.32 Final 2016 Appendix 5 - 421 VIRGINIA Di Y.1H'IAI��I'I' OF FNVIRONNIENZA]_ QLALITY James River Basin Cause Group Code: H28R-04-BEN Fact Sheets for Impaired (Category S) Waters in 2016 Moores Creek X-trib Location: Moores Creek X-trib from the headwaters downstream to its confluence with Moores Creek. (Start Mile: 1.67 End Mile: 0.00 Total Impaired Size: 1.67 Miles) City / County: Charlottesville City Use(s): Aquatic Life Cause(s) / VA Category: Benthic-Macroinvertebrate Bioassessments / 5A This segment is impaired due to violations of the General Standard for Benthics at station: 2-XRC001.15 (Impaired for VSCI) and 2-XRC-XRC01-SW (Impaired for VSCI). Initial Listing Date: 2006. Moores Creek X-trib Estuary Reservoir River Aquatic Life (Sq. Miles) (Acres) (Miles) Benthic-Macroinvertebrate Bioassessments - Total Impaired Size by Water Type: 1.66 Sources: Non -Point Source Final 2016 Appendix 5 - 422 VIRGINIA DI Y.1H'IAI��I'I' OF FNVIRONNIE\ZA]_ QLALITY James River Basin Cause Group Code: H28R-12-BEN Fact Sheets for Impaired (Category S) Waters in 2016 X-trib to Moores Creek Location: X-trib to Moores Creek from the outfall of the Ragged Mountain Reservoir downstream to Moores Creek. (Start Mile: 2.23 End Mile: 0.00 Total Impaired Size: 2.23 Miles) City / County: Albemarle Co. Charlottesville City Use(s): Aquatic Life Cause(s) / VA Category: Benthic-Macroinvertebrate Bioassessments / 5A This segment is impaired due to violations of the General Standard for benthics at station: 2-XMR-XMR01-SW (Impaired for VSCI). Initial Listing Date: 2012. X-trib to Moores Creek Estuary Reservoir River Aquatic Life (Sq. 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