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Home My WebLink AboutWPO202100038 VSMP - SWPPP 2021-12-06oB A COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, North Wing Charlottesville, Virginia 22902-4596 Tel. (434) 296-5832 • Fax (434) 972-4126 �'IRGI1flP Stormwater Pollution Prevention Plan (SWPPP) For Construction Activities At: Project Name: Southwood Redevelopment — Village 2 WP0202100038 Address: 538 Hickory Street, Charlottesville, VA 22902 Prepared by: Timmons Group 608 Preston Avenue, Suite 200 Charlottesville, VA 22903 434.295.8317 Prepared for: Habitat for Humanity of Greater Charlottesville 967 2"d St SE Charlottesville, VA 22902 Contact: Mr. Andrew Vinisky 434-293-9066 SWPPP Preparation Date: July 6, 2021 Revised: December 3, 2021 (This document is to be made publicly available according to 9VAC25-880-70, Part II, section D) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County CONTENTS: (from Albemarle County Code Sec. 17405) 1. Registration statement 2. Notice of general permit coverage 3. Nature of activity 4. Erosion and Sediment Control Plan. 5. Stormwater Management Plan 6. Pollution Prevention Plan. 7. Discharges to impaired waters, surface waters within an applicable TMDL wasteload allocation, and exceptional waters. 8. Qualified personnel 9. Signed Certification 10. Delegation of authority. 11. General permit copy 12. Inspection logs Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 1. Registration statement (Provide a signed completed copy of the DEQ registration statement) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY PERMIT #: GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM PLAN/ID #: CONSTRUCTION ACTIVITIES (VAR10) TECHNICAL CRITERIA: 1113 ❑ IIC ❑ REGISTRATION STATEMENT 2019 Application type. VNEW PERMIT ISSUANCE (CHOOSE ONE) ❑ MODIFICATION WITH ACREAGE INCREASE ❑ MODIFICATION WITHOUT ACREAGE INCREASE ❑ EXISTING PERMIT RE -ISSUANCE Section I. Operator/Permittee Information. A. Construction Activity Operator (Permittee). The person or entity that is applying for permit coverage and will have operational control over construction activities to ensure compliance with the general permit. A person with signatory authority for this operator must sign the certification in Section V. (per Part III. K. of the VAR10 Permit). Operator Name: Habitat for Humanity of Greater Charlottesville Contact person: Andrew Vinisky Address: 967 2nd St SE City, State and Zip Code: Charlottesville, VA 22902 Phone Number: (434) 293-9066 Primary and CC Email: avinisky@cvillehabitat.org B. Electronic correspondence. To receive an emailed coverage letter or to pay by credit card, you must choose YES and include a valid email. May we transmit correspondence electronically? YES V NO ❑ Section II. Construction Activity Information. A. Include a site map showing the location of the existing or proposed land -disturbing activities, the limits of land disturbance, construction entrances and all waterbodies receiving stormwater discharges from the site. B. Project site location information. Construction Activity Name: Southwood Redevelopment - Village 2 Address: 538 Hickory Street City and/or County and Zip Code: Charlottesville, VA 22902 Construction Activity Entrance Location Intersection of Horizon Road & Wardell Crest (description, street address and/or (Being constructed as part of Southwood latitude/longitude in decimal degrees): Redevelopment - Village 1 project) Latitude and Longitude 37.996006,-78.527894 (6-digit, decimal degrees format): C. Acreage totals for all land -disturbing activities to be included under this permit coverage. Report to the nearest one -hundredth of an acre. Total land area of development (include entire area to be 4.88 Ac disturbed as approved in the Stormwater Management Plan): Primary estimated area to be disturbed (include portions with 4.88 Ac Erosion and Sediment Control Plan approval only): Off -site estimated area to be disturbed (if applicable): N/A D. Property Owner Status: FEDERAL ❑ STATE ❑ PUBLIC ❑ PRIVATE E. Nature of the Construction Activity Description (i.e. commercial, Residential Community industrial, residential, agricultural, environmental, utility): F. Municipal Separate Storm Sewer System (MS4) name(s) (if the N/A site is discharging to a MS4): G. Estimated Project Dates (MM/DD/YYYY). Start Date: 01/01/2022 Completion Date: 06/30/2023 H. Is this construction activity part of a larger common plan of YES NO ❑ development or sale? Rev 11/2020 PAGE 1 1 6 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 I. 6" Order Hydrologic Unit Code (HUC) and Receiving Water Name(s). Include additional areas on a separate page. HUC NAME(S) OF RECEIVING WATERBODY 020802040402 Moores Creek Section III. Off -site Support Activity Location Information. List all off -site support activities and excavated material disposal areas being utilized for this project. Include additional areas on a separate page. Off -site Activity Name: Address: City or County: Off -site Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): Latitude and Longitude (6-digit, decimal degrees format): Is this off -site activity an excavated material disposal area? YES ❑ NO ❑ If this off -site activity is an excavated material disposal area, list the contents of the excavated fill material: Willa separate VPDES permit cover this off -site activity? YES ❑ NO ❑ Section IV. Other Information. A. A stormwater pollution prevention plan (SWPPP) must be prepared in accordance with the requirements of the General VPDES Permit for Discharges of Stormwater from Construction Activities prior to submitting the Registration Statement. By signing the Registration Statement, the operator is certifying that the SWPPP has been prepared. B. Has an Erosion and Sediment Control Plan been YES V NO ❑ submitted to the VESC Authority for review? Erosion and Sediment Control Plan Approval Date (for TBD the estimated area to be disturbed MM/DD/YYYY): C. Has land -disturbance commenced? YES ❑ NO D. Annual Standards and Specifications. If this project is utilizing approved Annual Standards and Specifications (AS&S), attached the completed AS&S Entity Form. AS&S Entity Name (if different from the Operator identified in Section I): E. Billing information (leave blank if same as the Operator identified in Section I. above). This entity will receive Annual Permit Maintenance and Permit Modification Fee invoices (if applicable). Billing Name: Contact Name: Address: City, State and Zip Code: Phone Number: Primary and CC Email: Rev 11/2020 PAGE 2 16 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 Section V. Certification. A person representing the operator as identified in Section I. A. and meeting the requirements of 9VAC25-880-70. Part III. K must physically sign this certification. A typed signature is not acceptable. Please note that operator is defined in 9VAC25-870-10 as follows: "Operator" means the owner or operator of any facility or activity subject to the Act and this chapter. In the context of stormwater associated with a large or small construction activity, operator means any person associated with a construction project that meets either of the following two criteria: (i) the person has direct operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications or (ii) the person has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan for the site or other state permit or VSMP authority permit conditions (i.e., they are authorized to direct workers at a site to carry out activities required by the stormwater pollution prevention plan or comply with other permit conditions). In the context of stormwater discharges from Municipal Separate Storm Sewer Systems (MS4s), operator means the operator of the regulated MS4 system. 9VAC25-880-70. Part III. K. Signatory Requirements. Registration Statement. All Registration Statements shall be signed as follows: a. For a corporation: by a responsible corporate officer. For the purpose of this chapter, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation, or (ii) the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations,• the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for state permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures, b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively' or c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this chapter, a principal executive officer of a public agency includes: (i) the chief executive officer of the agency or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. Certification: "I certify under penalty of law that I have read and understand this Registration Statement and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief true, accurate, and complete. I am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment for knowing violations." S. Andrew Vinisky Chief Construction Officer HFHGC Printed Name: A n 1 I / I/) Signature (signed in ink): Date Signed: October 8, 2021 Section VI. Submittal Instructions. Submit this form to the VSMP Authority. If the locality is the VSMP Authority, please send your Registration Statement submittal directly to the locality; do NOT send this form to DEQ. A list of local VSMP Authorities is available here: VSMP Authorities. If DEQ is the VSMP Authority, please send to: If the locality is the VSMP Authority, please send to: Department of Environmental Quality Office of Stormwater Management Suite 1400 PO Box 1105 Richmond VA 23218 constructiongp@deg.virginia.gov Rev 11/2020 PAGE 3 16 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT This Registration Statement is for coverage under the General VPDES Permit for Discharges of Stormwater from Construction Activities. This form covers the following permit actions: new permit issuance, existing permit modification with an increase in acreage, existing permit modifications that result in a plan modification but do not result in an increase in disturbed acreage, and reissuance of an active permit coverage. Application type. Select NEW PERMIT ISSUANCE to obtain a new permit coverage. Modifications are for modifying an existing, active permit coverage. Select MODIFICATION WITH ACREAGE INCREASE when the previously approved acreage(s) increases (permit modifications are not performed for decreases in acreage unless they result in plan changes — see Modification WITHOUT Acreage Increase). Select MODIFICATION WITHOUT ACREAGE INCREASE when there is a change to the site design resulting in a change to the approved plans with no increase in acreage(s) Select EXISTING PERMIT REISSUANCE to extend an expiring permit coverage for the next permit cycle and include the existing permit number. Section I. Operator/Permittee Information. A. Construction Activity Operator (Permittee). The person or entity that is applying for permit coverage and will have operational control over construction activities to ensure compliance with the general permit. For companies, use the complete, active, legal entity name as registered with a state corporation commission. Entities that are considered operators commonly consist of the property owner, developer of a project (the party with control of project plans and specifications), or general contractor (the party with day-to-day operational control of the activities at the project site that are necessary to ensure compliance with the general permit). If an individual person is listed as the operator, that person (or a legal representative of) must sign the certification in Section V. An operator may be one of the following: 9VAC25-870-10. Definitions. "Operator" means the owner or operator of any facility or activity subject to the Act and this chapter. In the context of stormwater associated with a large or small construction activity, operator means any person associated with a construction project that meets either of the following two criteria: (i) the person has direct operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications or (if) the person has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan for the site or other state permit or V5MP authority permit conditions (i.e., they are authorized to direct workers at a site to carry out activities required by the stormwater pollution prevention plan or comply with other permit conditions). In the context of stormwater discharges from Municipal Separate Storm Sewer Systems (MS4), operator means the operator of the regulated MS4 system. "Owner" means the Commonwealth or any of its political subdivisions including, but not limited to, sanitation district commissions and authorities, and any public or private institution, corporation, association, firm or company organized or existing under the laws of this or any other state or country, or any officer or agency of the United States, or any person or group of persons acting individually or as a group that owns, operates, charters, rents, or otherwise exercises control over or is responsible for any actual or potential discharge of sewage, industrial wastes, or other wastes or pollutants to state waters, or any facility or operation that has the capability to alter the physical, chemical, or biological properties of state waters in contravention of § 62.1-44.5 of the Code of Virginia, the Act and this chapter. "Person" means any individual, corporation, partnership, association, state, municipality, commission, or political subdivision of a state, governmental body, including a federal, state, or local entity as applicable, any interstate body or any other legal entity. B. May we transmit correspondence electronically? If you choose YES to this question and provide an email address in Section I. A., all correspondence, forms, invoices and notifications will be transmitted by email to the operator. This will also give the operator the ability to pay by credit card and to receive Dermit coverage aooroval letters immediately uoon Dermit aooroval. Section II. Construction Activity Information. A. A site map indicating the location of the existing or proposed land -disturbing activities, the limits of land disturbance, construction entrances and all water bodies receiving stormwater discharges from the site must be included with the submittal of this form. Aerial imagery maps or topographic maps showing the required items are acceptable. Plan sheet sized site maps are not required. Please consult your VSMP authority if you have additional questions regarding site map requirements. B. Construction Activity Name and location. Provide a descriptive project name (it is helpful to use the same naming convention as listed on the Stormwater Management plans), 911 street address (if available), city/county of the construction activity, and the 6-digit latitude and longitude in decimal degrees format for the centroid, main construction entrance or start and end points for linear projects (i.e. 37.1234N/-77.1234W). C. Acreage totals for all land -disturbing activities, on- and off -site, to be included under this permit. Acreages are to be reported to the nearest one -hundredth acre (two decimal places; i.e. 1.15 acres). Provide the total acreage of the primary development site as approved on the Stormwater Management Plans and the primary on -site estimated acreage to be disturbed by the construction activity as approved under the Erosion and Sediment Control Plans. The off -site estimated area to be disturbed is the sum of the disturbed acreages for all off -site support activities to be covered under this general permit. Do not include the off -site acreage totals in the primary, on -site total and estimated disturbed acreage totals. Permit fees are calculated based on your disturbed acreage total for all on- and off -site areas being disturbed under this permit coverage (the sum of all on -site and off -site disturbed acreages). D. Property owner status. The status of the construction activity property owner. Any property not owned by a government entity or agency (i.e. federal, state or local governments) is PRIVATE. Rev 11/2020 PAGE 4 16 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT E. Nature of the construction activity description. Choose the designation that best describes the post -construction use of this project (you may choose more than one). (i.e. Residential, Commercial, Industrial, Agricultural, Environmental, Educational, Oil and Gas, Utility, Transportation, Institutional, etc.). Describe the post -construction use of the project (i.e. Commercial — one new office building and associated parking and utilities; Transportation — Linear roads, sidewalks and utilities; Agricultural-3 Poultry Houses, etc.). F. Municipal Separate Storm Sewer System (MS4) name(s) if discharging to a MS4. If stormwater is discharged through a MS4 (either partially or completely), provide the name of the MS4(s) that will be receiving water from this construction activity. The MS4 name is typically the town, city, county, institute or federal facility where the construction activity is located. G. Estimated project dates. Provide the estimated project start date and completion date in Month/Day/Year or MM/DD/YYYY format (i.e. 07/30/2019). H. Is this construction activity is part of a larger common plan of development or sale? "Common plan of development or sale" means a contiguous area where separate and distinct construction activities may be taking place at different times on different schedules per 9VAC25-870-50. Definitions. Le. a subdivision, commercial development, business park, etc. I. 6th Order Hydrologic Unit Code (HUC) and associated Receiving Water Name(s). Provide all 6th order HUCs and receiving waterbody names, for the primary site and any Off -site areas included under this permit coverage, that could potentially receive stormwater runoff discharging from this activity. The HUC can be either a 12-digit number (i.e. 0208010101) or 2-letter, 2-number code (i.e. JL52). Include additional HUCs or receiving waters on a separate page. You may utilize DEQ!s web -based GIS application, VEGIS, to obtain this information. • VEGIS application link: DEas VEGIS Mapping Application • Instructions for utilizing DE(Xs VEGIS application link: CGP-GIS HUC Instructions Section III. Off -site Support Activity Location Information. This general permit also authorizes stormwater discharges from support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) located on -site or off -site provided that (i) the support activity is directly related to a construction activity that is required to have general permit coverage; (ii) the support activity is not a commercial operation, nor does it serve multiple unrelated construction activities by different operators; (III) the support activity does not operate beyond the completion of the construction activity it supports; (iv) the support activity is identified in the Registration Statement at the time of general permit coverage; (v) appropriate control measures are identified in a SWPPP and implemented to address the discharges from the support activity areas; and (vi) all applicable state, federal, and local approvals are obtained for the support activity. Off -site activity name and location information. Provide a descriptive off -site project name, 911 street address (if available), construction entrance location (address or decimal degrees coordinates and description), city/county and the 6-digit latitude and longitude in decimal degrees (i.e. 37.1234N, 77.1234W) of all off -site support activities. Indicate whether the off -site support activity will be covered under this general permit or a separate VPDES permit. If excavated material (i.e., fill) will be transported off -site for disposal, the name and physical location address, when available, of all off -site excavated material disposal areas including city or county; 6-digit latitude and longitude in decimal degrees (i.e. 37.1234N, 77.1234W) and the contents of the excavated material. List additional off -site areas to be included under this permit coverage on a separate page. Off -site areas not included on this registration will need to obtain coverage under a separate VPDES permit. Section IV. Other Information. A. A stormwater pollution prevention plan (SWPPP) must be prepared prior to submitting the Registration Statement per 9VAC25-880. See 9VAC25-880-70. Part II. of the General Permit for the SWPPP requirements. B. If the Erosion and Sediment Control Plan for the estimated area to be disturbed listed in Section II. C. has been submitted to the VESC Authority for review and plan approval, choose YES. If you are submitting this application to reissue an existing permit coverage, please provide the date that the VESC Authority approved the Erosion and Sediment Control Plan for the estimated area to be disturbed. C. If land disturbance has commenced, choose YES. "Land disturbance" or "land -disturbing activity" means a man-made change to the land surface that may result in soil erosion or has the potential to change its runoff characteristics, including construction activity such as the clearing, grading, excavating, or filling of land per §62.1-44.15:24. Definitions. D. If this project is using approved Annual Standards and Specifications (AS&S), attach the completed AS&S Entity Form. If the AS&S Entity is different from the operator identified in Section I. A., list the AS&S Entity Name. The AS&S entity is the entity or agency that holds the approved annual standards & specification. Please indicate if this project is also requesting a plan waiver. • AS&S Entity Form link: Annual Standards and Specifications Entity Information Form Rev 11/2020 PAGE 5 16 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT E. Billing information. If the person or entity responsible for billing/invoicing is different from the operator, please complete this section. If they are the same, leave this section blank. Section V. Certification. A properly authorized individual associated with the operator identified in Section I. A. of the Registration Statement is responsible for certifying and signing the Registration Statement. A person must physically sign the certification, a typed signature is unacceptable. State statutes provide for severe penalties for submitting false information on the Registration Statement. State regulations require that the Registration Statement be signed as follows per 9VAC25-880-70 Part III. K. 1.: a. For a corporation: by a responsible corporate officer. For the purpose of this part a responsible corporate officer means: (i) A president secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation, or (H) the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures. b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively. c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this part a principal executive officer of a public agency includes: (i) The chief executive officer of the agency, or (ii) A senior executive officer having responsibility far the overall operations of a principal geographic unit of the agency. Section VI. Submittal Instructions. Submit this form to the VSMP Authority that has jurisdiction for your construction activity. The VSMP Authority maybe either DEQ or your locality depending on the location and type of project. If your project is under the jurisdiction of a Local VSMP Authority, please contact the locality for additional submittal instructions. A blank area is provided for the Local VSMP Authority's mailing address. Who is the VSMP Authority for my orofect? DEQ or the locality? • DEQ: DEQ is the VSMP Authority and administers permit coverage for land -disturbing activities that are: ➢ within a locality that is not a VSMP Authority; ➢ owned by the State or Federal government; or ➢ utilizing approved Annual Standards and Specifications. • The Locality: The local government (locality) is the VSMP Authority and administers permit coverage for all other projects not covered by DEQ as listed above. For these projects, please submit permit forms directly to the Local VSMP Authority. A list of Local VSMP Authorities is available on DEQ's website here: Local VSMP Authority List. www.deg.virginia.gov/Progra mslwate r/Sto rmwaterM a nageme nt/VSM PPerm its/ConstructionGenera I Perm it. aspx Email the completed and signed form to: constructiongp@deg.virginia.gov Rev 11/2020 PAGE 6 16 Section 2. Notice of general permit coverage (This notice is to be posted near the main entrance according to 9VAC25-880-70, Part II, section C.) (Provide a copy of the DEQ coverage letter when obtained) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 3. Nature of activity (Provide a detailed narrative of the construction activities. Include or reference a construction schedule and sequence. Include any phasing.) This project includes the construction of 2 roads, a residential community, and associated utilities and landscaping. The total limits of disturbance on this project is 4.88 acres. These improvements are being made within the property boundary. The property is bounded by Route 631 on the north and west, woods on the south, and a mobile home park on the east. All construction shall take place in accordance with the Erosion and Sediment Control Sequence of Installation on plan sheet C3.00. Estimated construction dates are as indicated on the Registration Statement. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 4. Erosion and Sediment Control Plan. (Provide a reduced, 11x17 copy of the latest Erosion and Sediment Control Plan. Do not reference only.) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County EROSION AND SEDIMENT CONTROL NARRATIVE: MINIMUM STANDARDS: GENERAL EROSION AND SEDIMENT CONTROL NOTES: TH PROJECT DESCRIPTION THIS PROJECT INCLUDES THE CONSTRUCTION OF 2 ROADS, A RESIDENTIAL COMMUNITY, AND ASSOCIATED UTILITIES & LANDSCAPING. LIMITS OF CLEARING AND GRADING ARE 4.88 ACRES. ADJACENT PROPERTY THE PROPERTY IS BOUNDED BY A RESIDENTIAL COMMUNITY ON THE NORTH, ROUTE 631 ON THE WEST, AND WOODS ON THE EAST AND SOUTH. EXISTING SITE CONDITIONS THE EXISTING SITE IS WOODED. OFF -SITE AREAS NO OFFSITE AREAS WILL BE DISTURBED. ANY OFF -SITE LAND -DISTURBING ACTIVITY ASSOCIATED WITH THE PROJECT SHALL HAVE AN APPROVED ESC PLAN. CRITICAL EROSION AREAS EARLY ESTABLISHMENT AND PROPER MAINTENANCE OF PERIMETER CONTROLS WILL PROVIDE SEDIMENTATION CONTROL. ALL SLOPES STEEPER THAN 3:1 SHALL BE STABILIZED WITH BLANKET MATTING. EROSION AND SEDIMENT CONTROL MEASURES UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE CURRENT ADDITION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. THE MINIMUM STANDARDS OF THE VESCH SHALL BE ADHERED TO UNLESS OTHERWISE WAIVED OR APPROVED BY A VARIANCE BY LOCAL AUTHORITIES HAVING JURISDICTION. STORMWATER RUNOFF CONSIDERATIONS A PORTION OF THE PROPOSED DEVELOPMENT WILL BE CONVEYED TO A WET POND LOCATED ADJACENT TO THE STREAM, WHICH IS A TRIBUTARY OF BISCUIT RUN. THESE FACILITIES HAVE BEEN DESIGNED TO MEET STORMWATER QUALITY REQUIREMENTS. ALL OTHER AREAS WILL SHEET FLOW INTO THE SURROUNDING VEGETATED AREAS. ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE MAINTAINED IN ACCORDANCE WITH VESCH AND THE CONSTRUCTION SEQUENCE, INCLUDING THE INSPECTION OF ALL MEASURES AFTER ALL RAIN EVENTS. STRUCTURAL PRACTICES: 1. TEMPORARY CONSTRUCTION ENTRANCE - 3.02 A TEMPORARY CONSTRUCTION ENTRANCE SHALL BE PROVIDED AT THE LOCATION INDICATED ON THE PLANS. IT IS IMPERATIVE THAT THIS MEASURE BE MAINTAINED THROUGHOUT CONSTRUCTION. ITS PURPOSE IS TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. 2. SILT FENCE BARRIER - 3.05 SILT FENCE SEDIMENT BARRIERS SHAL L BE INSTALLED DOWNSLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT -LADEN RUNOFF FROM SHEET FLOW AS INDICATED. ITS PURPOSE IS TO INTERCEPT SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS AND PREVENT SEDIMENT FROM LEAVING THE SITE. 3. STORM DRAIN INLET PROTECTION - 3.07 STONE FILTERS SHALL BE PLACED AT THE INLET OF ALL DRAINAGE STRUCTURES AS INDICATED ON PLANS. ITS PURPOSE IS TO PREVENT SEDIMENT FROM ENTERING THE STORM DRAINAGE SYSTEM PRIOR TO PERMANENT STABILIZATION. 4. DIVERSION DIKE - 3.09, 3.11 & 3.12 A TEMPORARY RIDGE OF COMPACTED SOIL TO DIVERT WATER FROM A CERTAIN AREA. 5. SEDIMENT TRAP - 3.13 A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE TO DETAIN SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS IN "WET' AND "DRY' STORAGE LONG ENOUGH FOR THE MAJORITY OF SEDIMENT TO SETTLE OUT. 5.1. MAINTENANCE OF SEDIMENT TRAP - INSPECT TRAP EMBANKMENT WEEKLY TO ENSURE IT IS STRUCTURALLY SOUND AND HAS NOT BEEN DAMAGED DURING CONSTRUCTION ACTIVITIES. THE TRAP SHALL BE CHECKED AFTER EVERY RAINFALL EVENT. ONCE THE SEDIMENT HAS REACHED THE DESIGNATED CLEANOUT LEVEL IT SHALL BE REMOVED AND PROPERLY DISPOSED OF. 6. TEMPORARY SEDIMENT BASIN - 3.14 A TEMPORARY DAM WITH A CONTROLLED STORMWATER RELEASE STRUCTURE IS TO BE USED TO DETAIN SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. 5.1. MAINTENANCE OF SEDIMENT BASIN - INSPECT BASIN EMBANKMENT WEEKLY TO ENSURE IT IS STRUCTURALLY SOUND AND HAS NOT BEEN DAMAGED DURING CONSTRUCTION ACTIVITIES. THE BASIN SHALL BE CHECKED AFTER EVERY RAINFALL EVENT. ONCE THE SEDIMENT HAS REACHED THE DESIGNATED CLEANOUT LEVEL IT SHALL BE REMOVED AND PROPERLY DISPOSED OF. 6. OUTLET PROTECTION - 3.18 STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. 7. DUST CONTROL - 3.39 DUST CONTROL IS TO BE USED THROUGH THE SITE IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT. VEGETATIVE PRACTICES: 1. TOPSOIL (TEMPORARY STOCKPILE) - 3.30 TOPSOIL SHALL BE STRIPPED FROM AREAS TO BE GRADED AND STOCKPILED FOR LATER SPREADING. STOCKPILE LOCATIONS SHALL BE LOCATED ONSITE AND SHALL BE STABILIZED WITH TEMPORARY SILT FENCE AND VEGETATION. 2. TEMPORARY SEEDING - 3.31 ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR MORE THAN 30 DAYS SHALL BE SEEDED WITH FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS. SELECTION OF THE SEED MIXTURE SHALL DEPEND ON THE TIME OF YEAR IT IS APPLIED. 3. PERMANENT SEEDING - 3.32 FOLLOWING GRADING ACTIVITIES, ESTABLISH PERENNIAL VEGETATIVE COVER BY PLANTING SEED TO REDUCE EROSION, STABILIZE DISTURBED AREAS, AND ENHANCE NATURAL BEAUTY. 4. SOIL STABILIZATION BLANKETS & MATTING - 3.36 A PROTECTIVE COVERING BLANKET OR SOIL STABILIZATION MAT SHALL BE INSTALLED ON PREPARED PLANTING AREAS OF CHANNELS TO PROTECT AND PROMOTE VEGETATION ESTABLISHMENT AND REINFORCE ESTABLISHED TURF. MANAGEMENT STRATEGIES 1. PROVIDE SEDIMENT TRAPPING MEASURES AS A FIRST STEP IN GRADING, SEED AND MULCH IMMEDIATELY FOLLOWING INSTALLATION. 2. PROVIDE TEMPORARY SEEDING OR OTHER STABILIZATION IMMEDIATELY AFTER GRADING. 3. ISOLATE TRENCHING FOR UTILITIES AND DRAINAGE FROM DOWNSTREAM CONVEYANCES IN ORDER TO MINIMIZE PERIMETER CONTROLS. 4. ALL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE MAINTAINED UNTIL THEY ARE NO LONGER REQUIRED TO COMPLY WITH THE CONTRACT DOCUMENTS OR STATE LAW. PERMANENT STABILIZATION ALL NON -PAVED AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH PERMANENT SEEDING IMMEDIATELY FOLLOWING FINISHED GRADING. SEEDING SHALL BE IN ACCORDANCE WITH STD. & SPEC. 3.32, PERMANENT SEEDING. SEED TYPE SHALL BE AS SPECIFIED FOR "MINIMUM CARE LAWNS" AND "GENERAL SLOPES" IN THE HANDBOOK FOR SLOPES LESS THAN 3: 1. FOR SLOPES GREATER THAN 3: 1, SEED TYPE SHALL BE AS SPECIFIED FOR "LOW MAINTENANCE SLOPES' IN TABLE 3.32-D OF THE HANDBOOK. FOR MULCH (STRAW OR FIBER) SHALL BE USED ON ALL SEEDED SURFACES. IN ALL SEEDING OPERATIONS SEED, FERTILIZER AND LIME SHALL BE APPLIED PRIOR TO MULCHING. SEQUENCE OF INSTALLATION PHASE I (SEE SHEET C3.03) 1. A PRE -CONSTRUCTION MEETING IS REQUIRED WITH ALBEMARLE COUNTY E&S INSPECTOR, CONTRACTOR, OWNER, AND ENGINEER. THIS MEETING SHALL TAKE PLACE AT ALBEMARLE COUNTY COMMUNITY DEVELOPMENT BUILDING. CLEARING LIMITS MUST BE FLAGGED PRIOR TO THE MEETING WITH ONE (1) WEEK OF NOTICE. 2. INSTALL CONSTRUCTION ENTRANCE, SILT FENCE, SUPER SILT FENCE AND OTHER PERIMETER MEASURES. 3. CLEAR AND GRADE SEDIMENT TRAP, BASIN AND ASSOCIATED STORMWATER PIPE. REFER TO GRADING AND DRAINAGE PLAN ALONG WITH PIPE PROFILES FOR ADDITIONAL INFORMATION. 4. INSTALL DIVERSION DIKES, CLEAN WATER DIVERSIONS & INLET PROTECTION. 5. AFTER ALL EROSION AND SEDIMENT CONTROL MEASURES ARE IN PLACE, SITE WORK CAN BEGIN. 6. SEED ALL DENUDED AREAS PER VESCH STANDARDS. PHASE IIA (SEE SHEET C3.04) 1. INSTALL ADDITIONAL INLET PROTECTION WHERE SHOWN ON THE PHASE II EROSION AND SEDIMENT CONTROL PLAN AS THE STORM SYSTEM IS CONSTRUCTED AND BECOMES OPERATIONAL. 2. FINE GRADE PROJECT AREA. APPLY PERMANENT SOIL STABILIZATION TO THESE AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS ACHIEVED. 3. ALL STORMWATER PIPING & STRUCTURES SHALL BE INSPECTED FOR SILT/SEDIMENT. IF PRESENT, SILT/SEDIMENT SHALL BE CLEANED OUT FOR THE SYSTEM TO THE SATISFACTION OF THE E&S INSPECTOR. 4. ONCE THE SITE UPHILL FROM A SEDIMENT TRAP OR BASIN HAS BEEN STABILIZED AND APPROVED BY ESC INSPECTOR, REMOVE THE SEDIMENT TRAP OR BASIN. 5. APPLY PERMANENT SOIL STABILIZATION TO THESE AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS ACHIEVED. 6. ONCE CONSTRUCTION IS COMPLETE AND ALL CONTRIBUTING AREAS ARE STABILIZED, EROSION CONTROL MEASURES CAN BE REMOVED UPON APPROVAL FROM THE E&S INSPECTOR. AN EROSION AND SEDIMENT CONTROL PROGRAM ADOPTED BY A DISTRICT OR LOCALITY MUST BE CONSISTENT WITH THE FOLLOWING CRITERIA, TECHNIQUES AND METHODS: MS-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. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. MS-2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE. MS-3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. MS-4. SEDIMENT TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. MS-5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. MS-6. SEDIMENT TRAPS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP. A. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE ACRES. MS-7. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED. MS-8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE. MS-9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. MS-10. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT. MS-11. BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. MS-12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NONERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBLE COVER MATERIALS. MS-13. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIAL SHALL BE PROVIDED. MS-14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. MS-15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. MS-16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF -SITE PROPERTY. D. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS. F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. MS-17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES. MS-18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM AUTHORITY. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. MS- 19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE STANDARDS AND CRITERIA LISTED IN SECTION 19 OF VIRGINIA ADMINISTRATIVE CODE 9VAC25-840-40 MINIMUM STANDARDS. ES-1: UNLESS OTHERWISE INDICATED, CONSTRUCT AND MAINTAIN ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE LATEST EDITION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. ES-2: THE CONTROLLING EROSION AND SEDIMENT CONTROL AUTHORITY WILL MAKE A CONTINUING REVIEW AND EVALUATION OF THE METHODS AND EFFECTIVENESS OF THE EROSION CONTROL PLAN. CLINT W. S F LET Lic. N . 54380 12103/ 2021 ES-3: PLACE ALL EROSION AND SEDIMENT CONTROL MEASURES PRIOR TO OR AS THE FIRST STEP IN CLEARING, '�%l0;1AL GRADING, OR LAND DISTURBANCE. N44#04 ES-4: MAINTAIN A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN ON THE SITE AT ALL TIMES M ES-5: PRIOR TO COMMENCING LAND -DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS g (INCLUDING, BUT NOT LIMITED TO, OFFSITE BORROW OR WASTE AREA), SUBMIT A SUPPLEMENTARY N EROSION CONTROL PLAN TO THE ARCHITECT/ENGINEER AND THE CONTROLLING EROSION AND SEDIMENT E CONTROL AUTHORITY FOR REVIEW AND ACCEPTANCE. v E w ES-6: PROVIDE ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND a a N 3 SEDIMENTATION AS DETERMINED BY THE RESPONSIBLE LAND DISTURBER. (MODIFIED NOTE) o w a o w O m ES-7: ALL DISTURBED AREAS SHALL DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING a J U N LAND -DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT. '-' o d � co, N v ES-8: DURING DEWATERING OPERATIONS, PUMP WATER INTO AN APPROVED FILTERING DEVICE. z F Bw v 30 x ES-9: INSPECT ALL EROSION CONTROL MEASURES DAILY AND AFTER EACH RUNOFF- PRODUCING RAINFALL EVENT. 9 W a LL MAKE ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL ur) v v DEVICES IMMEDIATELY. F ¢' u o� EO1 ry SOILS INFORMATION: a 00 J 27B - ELIOAK LOAM, 2 TO 7 PERCENT SLOPES. MORE THAN 80 INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, O HYDROLOGIC SOIL GROUP: B 27C - ELIOAK LOAM, 7 TO 15 PERCENT SLOPES. MORE THAN 80 INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, HYDROLOGIC SOIL GROUP: B p 39E - HAZEL LOAM, 25 TO 45 PERCENT SLOPES. 20 TO 40 INCHES TO LITHIC BEDROCK, EXCESSIVELY DRAINED, HYDROLOGIC SOIL GROUP: B 0 x F 0 w w_ x U z O W 0 O am O ce H u In 0 1 z o w U w � U O a w Lu w F 0 DATE 07108121 DRAWN BY J. FOX DESIGNED BY C. SHIFFLETT CHECKED BY C. SHIFFLETT SCALE N.A. wI I W ^ 5m r) 0 J W Lu W 0L 0 0 0 2 ,0 V 1 Q w J CC Q w m J Q LL }O z O U JOB NO. J_ Q w 0 MR J �0�y LL z 0 U Z G w U) i1 r►� z _O U) w L 47039 SHEET NO. C3.00 TEMPORARY RIGHT-OF-WAY DIVERSIONS PIPE OUTLET CONDITIONS a �pLTH (IpP, I VI TYPICAL GRAVEL STRUCTURE RWD TEMPORARY RIGHT-OF-WAY DIVERSION No Scale 1. SET POSTS AND EXCAVATE A 4"X4" TRENCH UPSLOPE ALONG THE LINE OF POSTS. co 3. ATTACH THE FILTER FABRIC TO THE WIRE FENCE AND EXTEND IT INTO THE TRENCH. 2. STAPLE WIRE FENCING TO THE POSTS. 4. BACKFILL AND COMPACT THE EXCAVATED SOIL. EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. FILTER FABRIC All I I � SF 3.05-1 SILT FENCE (WITH WIRE SUPPORT) No Scale G El El El El El I u u uuu STANDARD ORANGE VINYL OR PLASTIC CONSTRUCTION FENCE ATTACHED TO POSTS (PRE -WEATHERED WOOD, GALVANIZED STEEL, IRON OR THICK PVC PLASTIC), AT LEAST 40" ABOVE FINISH GRADE WITH SPAN BETWEEN POSTS NO GREATER THAN 6' ON CENTER. EVERY NINTH POST SHALL CONTAIN A WARNING SIGN THAT CLEARLY IDENTIFIES THE FENCE AS A TREE PROTECTION FENCE. TP NO SCALE REE PROTECTION Scale 31 do A A La j 0 %— SECTION A -A FILTER CLOTH SECTION A -A FILTER CLOTH IRE OUTLET TO FLAT ,REA WITH NO EFINED CHANNEL qW :dr 'KEY IN 6%9"; RECOMMENDED FOR ENTIRE PERIMETER 3do (MIN.) IRE OUTLET TO VELL DEFINED :HANNEL I KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION BASKET, OR CONCRETE. 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED USING PLATES 3.18-3 AND 3.18-4. 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 INCHES. OUTLET PROTECTION # OUTLET # WIDTH 1 WIDTH 2 LENGTH CLASS OP1 100 6' 6' 9' CLASS II OP2 200 3' 3' 3' CLASS I OP3 300 6' 16' 14' CLASS II 3.38 1( OP OUTLET PROTECTION No Scale COMPACTED 18" MIN. i t i t i t i t i DD CWD TEMPORARY DIVERSION DIKE No Scale CWD TO HAVE VDOT STANDARD EC-2 MATTING ON UPHILL SIDE FLOW TYPICAL ORIENTATION OF VESCH TREATMENT - 1 SOIL (STABILIZATION SHALLOW BLANKET) SLOT E,��j` ��ON SHALLOW SLOPES, STRIPS NETTING PROTECTIVE COVERINGS MAY BE APPLIED ACROSS THE SLOPE. WHERE THERE IS A BERM AT THE BERM TOP OF THE SLOPE, BRING THE MATERIAL OVER THE BERM AND,qft STEEP ANCHOR IT BEHIND THE BERM. SLOPE ON STEEP SLOPES, APPLY PROTECTIVE COVERING PARALLEL TO THE DIRECTION OF FLOW AND ANCHOR SECURELY. BRING MATERIAL DOWN TO A LEVEL AREA BEFORE 4 TERMINATING THE INSTALLATION. TURN THE 12" DITCH FLOW END UNDER 4" AND STAPLE AT 12" INTERVALS. IN DITCHES, APPLY PROTECTIVE COVERING PARALLEL TO THE DIRECTION OF FLOW. USE CHECK SLOTS AS REQUIRED. AVOID JOINING MATERIAL IN THE CENTER OF THE DITCH IF AT ALL POSSIBLE. EXISTING GROUND allai TER l 0 m}N. AI OTHJ SIDE ELEVATION I�3�: 1j•1.1•lt 1•ai .r. Ir Ir a ��?'��?'��?'��?'�v' • ., . . BM 3.36-1 CE SOIL STABILIZATION BLANKET (TREATMENT-1) STONE CONSTRUCTION ENTRANCE No Scale No Scale TYPICAL VESCH TREATMENT - 1 (SOIL STABILIZATION BLANKET) INSTALLATION CRITERIA ANCHOR NOTES if SLOT APPROXIMATELY 200 STAPLES REQUIRED PER 100 SQ. YDS. OF MATERIAL ROLL. ANCHOR SLOTS, JUNCTION SLOTS & CHECK SLOTS TO BE BURIED 6" TO 12". JUNCTION 12" MAX. 4:1 OR FLATTER SLOT 6" MAX. STEEPER THAN 4:1 EDGE AND END JOINTS CHECK SLOT TO BE SNUGLY ABUTTED I I I I III TERMINAL FOLD I (JUTE MESH WILL HAVE I I I LAP JOINT 2" MIN. (JUTE STAPLED LAP JOINT IN I MESH ONLY) LIEU OF EDGE JOINT) I I I I I I TAMP FIRMLY I I I ANCHOR SLOT F MAX. 4:1 OR FLATTER 3' I I o MAX. STEEPER THAN 4:1 I I I I N 1 6 j - CHECK SLOT I I I _ - I 1 O 2" II I II I II I I TAMP Z FIRMLY CHECK SLOT I I I I 0o r—VAR.yI—VAR.yI 2" � O CID L7 STAPLE FORMED FROM N0.11 STEEL WIRE. CHECK SLOTS AT MIN. 50' C-C 8' STM. "'"' "'^T"'^^ ^""^" ^^" INTERVALS; NOT REO: D W1TH 6' STA JUNCTION SLOT TAMP FIRMLY [--12 2" O F TERMINAL FOLD TAMP FIRMLY 3.18-1 BM � SOIL STABILIZATION BLANKET TREATMENT-1 NO Scale TYPICAL VESCH TREATMENT-2 SOIL STABILIZATION MATTING INSTALLATION SOIL STABILIZATION MATTING SHALL BE USED IN CONJUNCTION WITH RIPRAP AT OUTLET END OF PIPE p p� • �- %:/T�Z.t+t'��r��T�� _ -••err 51 EXISTING f PAVEMENT MOUNTABLE BERM (OPTIONAL) EXISTING PAVEMENT GRAVEL FILTER 12" RUNOFF WATER WIRE MESH FILTERED WATER s .r.. R SEDIMENT CONCRETE GUTTER �• CURB INLET 12" GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE. SPECIFIC APPLICATION: THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. 3.36-2 IP STORMWATER INLET PROTECTION No Scale 'I wall VA ENTRENCH \ 1 4w EDGES OF MATERIAL 6" 3.09-1 CHECK SLOTS TO BE CONSTRUCTED AS PER MANFACTURERS RECOMMENDATIONS. e OPEN CHECK SLOT TRANSVERSE CLOSED CHECK SLOT UPSTREAM AND DOWNSTREAM T TERMINAL BM SOIL STABILIZATION BLANKET No Scale TMENT SILT FENCE DROP INLET PROTECTION DROP INLET WITH GRATE IL —FRAME 2 Al N=- 3' MIN.HER EXCESS —� AT CORNERS PERSPECTIVE VIEWS STAKE IAI � FABRIC — III MIN. .,Yd `A. J DETAIL A ELEVATION OF STAKE AND FABRIC ORIENTATION SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER THAN 5%) WHERE THE INLET SHEET OR OVERLAND FLOWS (NOT EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS IN STREET OR HIGHWAY MEDIANS. 3.36-4 IP STORM DRAIN INLET PROTECTION No Scale CLINT W. S F LET Lic. N . 54380 12103/ 2021 tss M E 0 ONo N Vi N C > E a E w H_ Lu U a) Q LL 3 p LL 0 w O `6 Q � V oMo Z o_ — 1i O 0 W N V d w 30 =x tVl1 oa w o Vn ==LL �i vry Z O Z W =�a� ~ > p .0.: nO1i wM L U a_ ow 2 O � a 3.02 0= C7 0 j W 2 F w F N Q N z ti 0 1n DATE 0 } 07108121 DRAWN BY J. FOX • DESIGNED BY • C. SHIFFLETT • CHECKED BY C. SHIFFLETT • SCALE N.A. • N Lu C� J P" 0 3.07- 6 1 06 LLI w/ z 0 li 7� Lu Q G > J a O L O� J co Z Lu Q O LL O Lu Q O W Lu Uj 006 O Z O W IO V / JOB NO. 3.07-1 47039 SHEET NO. C3.01 0 0 3 c a 0 90 o o O Ez 20 162 2 c E' —2 a c m 1a o- 0 O 3 U3 z„ 0 � a O �3 n d m 2 Y x c 0.0 g„ 0 = c Eo dm 0 a c RIM 10 a 0 .0 a 2 c m m c � o c 0 m nE c E F_ L NLTH UF�� f�IIIV 2: CLINT W. �S F LET >� , Li6• ERNST CONSERVATION SEEDS RIGHT-OF-WAY NON-NATIVE WOODS MIX - ERNMX-132 121 O3/203� BOTANICAL NAME COMMON NAME PRICE/LB 30.00% FESTUCA RUBRA CREEPING RED FESCUE 1.90 M E rn ° N � N C 20.00% LOLIUMPERENNE, PERENNIAL RYEGRASS, 1.85 > E 'FASTBALL RGL' 'FASTBALL RGL' w a E (TURF TYPE) w > 3 U w 3 20.00% PHLEUMPRATENSE, TIMOTHY, 'CLIMAX' 1.20 p a CLIMAX' w m Oa LU _j z O 12.00% TRIFOLIUM HYBR/DUM ALSIKE CLOVER 3.25 LU j o N 10.00% AGROSTIS PERENNANS, AUTUMN BENTGRASS, 14.00 z f a U ALBANYPINE BUSH - ALBANYPINEBUSH- 3: 0 U) LU NY ECOTYPE NY ECOTYPE a)tLL M s 8.00% AGROSTIS ALBA REDTOP 8.00 v N F v ¢> ^ z 2 100% MIX PRICE/LB BULK: $3.61 w LU U ry SEEDING RATE: 40-60 LB PER ACRE 00 j WOODLAND OPENINGS p U THE SHADE -TOLERANT GRASSES AND CLOVER ARE GOOD FOR o; WOODLAND OPENINGS AND PARTIALLY SHADED SITES. MIX FORMULATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE DEPENDING O W ON THE AVAILABILITY OF EXISTING AND NEW PRODUCTS. WHILE THE FORMULA MAY CHANGE, THE GUIDING PHILOSOPHY AND FUNCTION OF LU THE MIX WILL NOT. _ F w F N SLOPE STABILIZATION SEED MIX /v Z z 0 No Scale DATE o 07108121 Sediment Trap Design _ Drainage Area (acres, < 3) 0.72 '• } DRAWN BY TABLE 3.31-B ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS Trap Volumes: CREST OF STONE WEIR ,R ORIGINAL Elevation (ft) Area (sf) Volume (cy) GROUND \ J. FOX ESIGNED BY "QUICK REFERENCE FOR ALL REGIONS" a La 411 660 - • PLANTING DATES SPECIES RATE (LBS./ACRE) 413 1110 65.6 DRY STORAGE - N YRF 416 1980 171.7 • SHIFFLETT k HECKED BY SEPT. 1 - FEB. 15 50/50 MIX OF ANNUAL RYEGRASS wET STORAGE (ExuvAaO) ` MAc • C. SHIFFLE7T (LOLIUM MULTI-FLORUM) FLTER CLOTH IXdLiR^L ORDURO SCALE & 50-100 EIEv. 1 CEREAL (WINTER) RYE Wet Storage: ,SEE PLATE „}l EOORSE AGGRE"M Cam: I RRRAR Wet Storage Required (cy) (67*DA) 48.3 N.A. (SECALE CEREALE) Bottom of Stone Weir (ft) 413.0 • FEB. 16 - APR. 30 ANNUAL RYEGRASS 60-100 Wet Storage Provided at this Elevation (c, 65.6 *"Coarse Aggregate Shall be VDOT #3, #357 or #5 (LOLIUM MULTI-FLORUM) Elope of Wet Storage Sides 2:1 Weir Length (ft) (6xDA) 4.3 � ^' MAY 1 - AUG. 31 GERMAN MILLET 50 Dry Storage: Bottom of Trap Elevation (ft) 411 , V (SETARIA ITALICA) Dry Storage Required (cy) (67*DA) 48.3 Bottom Trap Dimensions: 19' x 36 Crest of Stone Weir 417.0 Top of Dam Elevation (ft) 416 W Dry Storage Provided at this Elevation (cy 171.7 Top Width of Dam (ft) 3 Slope of Dry Storage Sides 21 Top Trap Dimensions 39' x 56 v TS 3.31 ST 3.13 J J Q TEMPORARY SEEDING PLANT MATERIALS SEDIMENT TRAP 1 � > LUNo 0 Scale No Scale I 06 Sediment Basin Design TABLE 3.32-C SITE SPECIFIC SEEDING MIXTURES FOR APPALACHIAN/MOUNTAIN AREA MIN. 1'WI SPILLWAY CREST OF EMERGENCY 2' WITHOUT SPILLWAY Drainage Area (acres) 373 //� LJ DESIGN HIGH WATER W Basin Volumes: 'r35-YR. STORM EI.W.) H TOTAL LBS. PER ACRE Elevation (ft) Contour Area (sf) Volume (cy) D•S• 400 1360 MIN. 10• LU O MINIMUM CARE LAWN RE RISER EST CR 404 3790 381.5 COMMERCIAL OR RESIDENTIAL 200-250 LBS. DRY STORAGE DEWARISER KENTUCKY 31 OR TURF -TYPE TALL FESCUE 90-100% 406.8 6070 511.3 DLnEE J IMPROVED PERENNIAL RYEGRASS ` 0-10% 409 8180 580.E WET STORAGE a J O KENTUCKY BLUEGRASS 0-10% < O HIGH -MAINTENANCE LAWN SEq WET EDUC (' WET • ENT CLENNOE REDUCINTED TO 34 C.Y./ ACRE) m MINIMUM OF THREE (3) UP TO FIVE (5) _j O VARIETIES OF BLUEGRASS FROM Wet Storage: w Q APPROVED LIST FOR USE IN VIRGINIA. 125 LBS. Wet Storage Required (cy) (67*DA) 249.8 Design High Water 408.0 p U Dewatering Orifice Elevation (ft) 404.0 Top of Dam (ft) 409.0 GENERAL SLOPE (3:1 OR LESS) Wet Storage Provided at this Elevation (cy) 381.5 Top Width of Dam (ft) 6.0 W Z KENTUCKY 31 FESCUE 128 LBS. Available Volume Before Cleanout (cy) (34*DP 126.8 Bottom of Basin (ft) 400.0 w RED TOP GRASS 2 LBS. SEASONAL NURSE CROP " 20 LBS. Cleanout Elevation (ft) 403.00 Approx. Bottom Dimensions: 66' x 27' O U C Distance from Cleanout to Orifice (ft) (> 1') 1.0 Upstream Face Slope: 21 e_ 150 LBS. LOW -MAINTENANCE SLOPE (STEEPER THAN 3:1) Downstream Face Slope: 21 0 Dry Storage: w KENTUCKY 31 FESCUE 108 LBS. 2 LBS. Dry Storage Required (cy) (67*DA) 249.8 Baffles: Yes U) RED TOP GRASS SEASONAL NURSE CROP " 20 LBS. Riser Crest Elevation (ft) 406.8 Length of Flow, L (ft) 55 CROWNVETCH *" 20 LBS. Dry Storage Provided at this Elevation (cy) 511.3 Effective Width, We (ft) 48 150 LBS. Diameter of Dewatering Orifice (in) 5.0 L / We (Baffles required if < 2) 1.1 O z Diameter of Flexible Tubing (in) (Orifice+2") 7.0 Collars: No O O _ * PERENNIAL RYEGRASS WILL GERMINATE FASTER AND AT LOWER SOIL TEMPERATURES THAN FESCUE, THEREBY PROVIDING COVER AND Runoff. (See Routing in Calc. Book) Depth of Water at Spillway Crest (ft) 0 C (Use 0.45 for Bare Earth) 0.45 Slope of Upstream Face (Z1) 0 O EROSION RESISTANCE FOR SEEDBED. Tc (min) 5 Slope of Barrel (Sb) 0 1 2yr 3.69 Qp 2yr &2 Length of Barrel in Saturated Zone (Ls) 0 w ** USE SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATES 125yr 6.85 Q 25yr 11.5 Number Collars Required 0 AS STATED BELOW: Dimension of Collars N/A MARCH, APRIL THROUGH MAY 15TH .............................. ANNUAL RYE Principle Spillway: MAY 16TH THROUGH AUGUST 15TH......................... FOXTAIL MILLET Available Head (ft) 3.1 Emergency Spillway: No AUGUST 16TH THROUGH SEPTEMBER, OCTOBER...... ANNUAL RYE Diameter Riser (in) 36 Bottom Width (ft) 0 O NOVEMBER THROUGH FEBRUARY................................. WINTER RYE Diameter Trash Rack (in) 48 Slope of Exit Channel (ft/100ft) 0 Barrel Length (ft) 86.78 Length of Exit Channel (ft) 0 *** IF FLATPEA IS USED, INCREASE TO 30 LBS./ACRE. ALL LEGUME SEED Diameter of Barrel (in) 18 Crest of Spillway (ft) 0 MUST BE PROPERLY INOCULATED. WEEPING LOVEGRASS MAY ALSO BE Barrel Inv. In Elevation (ft) 400.94 - INCLUDED IN ANY SLOPE OR LOW -MAINTENANCE MIXTURE DURING Barrel Inv. Out Elevation (ft) 39920 WARMER SEEDING PERIODS; ADD 10-20 LBS./ACRE IN MIXES. JOB NO. PS 3.32 ST 3.14 47039 PERMANENT SEEDING MIX FOR PIEDMONT AREA SEDIMENT BASIN 1 SHEET NO. C3.02 No Scale No Scale L / / o � \` /\/\/ ■` / / \ I\\ // \\\\r i\/ /"\i\I `/,\\ /' , �\//,1 1 \/ ,I\ \'/ \I \ \\ /\/\\ --I1 �/ I �`/,/\\ \,\\\1,I .Ib\� \ I/ \ \ /�\ s\//\\\\/O/0\/\// 0/, / �t°\` \I` I \I �I _I\ I D�°/ \x/ \/ / I oaa��•• •tVn � •� L O.rQ/V pZWp2�0 I ' f�G �r � i oofFpLTH �jFvo 83 / °_ _ .o �O \o\ LINT W. ,m4�,>; ' i -\ o C o�``U`S F LET ^ OOOpoo,\-------o°0o\ SCALE I"=30'/9� °°00000 ° ic. N 54380 to 021NR030' 60' 12/02 °('gR�11 \ NA _77 \— 0o ----------- — --------- ---° — —_' o —— — — — — ------' °��=°i E `16 cr °� €°04 ° W0 LOODWAV 00_ PERLOMA o CASE NO. FLOaDPu9LN PELL o OMA CASE NO. wo / Lus M 21-0 0029P � z 0Oa00000000p0000 moms-/ O21-03-0029P o ° ./ 000 L/F°°o a ------ 'o// FF /7� wI I __ °/ ?fw ° o'° ° o - o °` LIMITS OF 0 0 0 0 o°o 0o0-0-0-0-0 o 0 o o o o u o *0 DISTURWCE o oo O - an 0°°° Lu---------4.88AC. o 0 0 0 ` �/pp/ z 0O-o —O° 00 o0 0fi �---- — -- >°o � o -3' o°°Lu P 1EECTVE O O O R 100`� ' �/i{W 000 FLOODPAI/0 _TP o PER4OMA ,CASE NO. 0 21-Z-002,7 SF ` / Lu Lu Np ---- - - - - -- --- DATEDC 07/08/2 • 10} DRAWN BY Io/ I oX J. FOX p/ CE DESIGNED BOULuQQZ Y I aC.SHIFFLETT CHECKED BY /— /\ V • C. SHIFFLETTI °I SAV AN — _ — — — _ , SCALE iSAN-- - - -- -- /\— — — — — — q \° TP DD TS o \SF � 'Lu U)1\ ° TS -----------� it \\\ \"\ SDC J \� \a / 0 > ° \BAFFLESQ27' TS w EROSION CONTROL LEGEND LIMITS OF CLEARING AND GRADING 35' C D LuSOIL TYPE BOUNDARY °1\ Lu z CONSTRUCTION ENTRANCE 3.02 C) O\\ Lu Luc iSILT FENCE 3.05 NN 3.07 SF C6INLET PROTECTION DD SEDIMENT TRAP 3.13 O. IN, j SEDIMENT BASIN 3.14 _ (ID!D) Lu OUTLET PROTECTION 3.18 TEMPORARY SEEDING 3.31 PERMANENT SEEDING 3.32 MULCHING 3.35 BLANKET MATTING 3.36 ' � TP TP TREE PROTECTION 3.38 �\ ` _ \\\ \ \ � \ \ \ ` � \ .a � - -� - - - � \ \ �� _ -- % / / / \ � c� I I I I I 1 I I I I / / // / \ / / / / / / / � / \ ' / JOB NO. DC DUST CONTROL 3.39 / / \ ` - \ - \ \\ `` \ Z C \ \ ` \ \ ` \ ° 0 0 - _ `\ \ �SpO \ 1 _ 1 1 I I / / / / k / 1 SHEET 47039 NO. * "VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK" SPECIFICATION NUMBER \ \ \ \ I \ \\ \\ \ \ ` \ - \ \ \ \ ` ^ - _ _ - \ \ \ \ 1 , I I 1 I / \ \ -,\\\ \\ \ �\ \ \ \\\ ID \ \_ ,---- ` ` \ \ \\ \ I I , I 1 I , / , , , \ I \ \ C3.03 L / 'o� / __--�-- l / _-__------ 00°0 all 409 // //o°�' �,'//�_�' - / a/\,L� �'�, _ _ \\\\` \` \` oOoo \ �oo-° g�s2 �� I_\��\\�?O CLINT W. Si / �_ - _ \� - / /\--------- - \ \ \ ° °\ - - c�nS F LET >• /---------- I 1 \ - \ 1 � ° o o ° 0 0 0 ° o o � \\ - \ � � _---_`. 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N 5136• 4' o \ / / I / o 0 0 D 0,°4\\\X�VARYTER UTE ' 0— 30' 60'� G�1� _ ST HpB� 12103/ 2021 �ti 0 woo 0° , 1Ii, _/// // \ / // \\\ �~'\-L _ _-- - - - --_ - - - -- __ —---- �1 ,//�� \ \ �� _/ fnE ° ° 1.- 1'l11 ////'/ /r \ // //'/ \\\\` --`- ---- ----- '' 000 •►,- _=_�I. . - --- -- --- - - -- / .� '/ ' 1 ---- \_ / -- Nc o 7 ^� /' 9 1 --_ �1-- ,� / �`- --- ---_ _ _- --- _ y �� / crso _ -0 ��0. 0-o-O-O'— ai 0016 , ///,,,/ I 1 1 1 EFFECTIVE -_ �'' / ---------- _ // / 0 o S° _ w 0 0 / / / / / I / / 1 // / ' FLOODWAV / E,FEECTlVE ZDI_YR_! -'_ _ =f / _ — — a g s / ' _ - w > 3 0° - // //////// / /l //i PERLOMA --_ _ y / / , o o° F�F' /''' i,-- _ ~LL03 FLOaDPL9[NPER_ - �T� R!�' /' ¢ LL o / CASE NO. / OMA CASE W. — — — — — — — _ _ - - , _ _ / 0 ' ( Fp StL 2 / / ' w O m \, / \ / / / ; / / / / 21-03-0029Po 0 0 0 0 0 0 0 0 0 0 ,, -�j \ - o gXR / ' 9�J j S� / Qa J c� oo z / 21-0 0029P / T , , 'gOs ° / _ /'� °:° o - - - --- / 110, _ _ v _ ---' / o �9/ Clp '/ '/ / i / i a> ory gpS) / / // / / 4 / 0 / o 0 _ v N / o/ / FF / / / mrv� a 0 °� 000000p _ / c� 0000000°/ ' / �t� , /'/ ,' ' zF"� C�J 0 0 ' oA ° N �j ' �' to x W o / 11 o-o_ - _ - 414- / / ^� / x v ry z Z ° °0016. ��--_� '4150� —iFVQ`n om EFFECTIVE ��(( / �� _ - _ _ - - _ 100-VR / /0 / _ ---- - __-- /'FLOODPyAIN ° / / I P / I _ _ - 4�4- - - - _ _ _ _ _ _ - 41 14 — m / / 14 15 / / / / ' / ' ow 2 TP _ _ � 4 a / / / z� � PER40MA /o i // / — — _ ®— — � -' O CASE NO. 60 ;. — r�'� / / / 21-0-0029�� d // / IV IP i — ♦ �L14� / ' //// / / ✓/ // 3g a IP p o / / / 0c\ / \ / / / / - _ r / / y / / 3j / / w IP / / l l / //Ip / ' --- --- _ - --/ MU / ' / > F Lu — — — ' g / o DATE - r�A_ = \I ` / //I / I / I / tK / / / i - M _7a II / / // / / / ��$ / ile 0 07108121 DRAWN BY IP IP _ , I 1 /I , l ` / J. FOX \ ,\� , %/ / , / / I /� I I / I I / ' W W W - _ _ CE - -' / / I I 1 \ \ \ I \ \ \ �! • DESIGNED BY \ \ , / r' / /,la /II I < \ \ , \ • C. SHIFFLETT y S Y _ A Q D l \ / • IP IP I \ \ \ \\ \\ \ ` CHECKED BY --- _ r /SA \ \ \ \ \� • • C. SHCALE T \ SCALE / _ \ Mu -- --- --- 1 =30 01 IP o\ PS �� \ \ I / / / 3143 / _ \ 32 \ \ \� I \ \d10 PS - MU (D IP \ �4 426427 ' IP 0 Ps 1 1 1 10III I \ \ I \ I\ \ 1 I OP2 I I 1 ' / ' ' / , s z _J \ , _ 1 `\ \ \ \\d �. o I I / , ---Lu 0 1 ( I = I I \ \ \ \ \ �1 \ 1 _1 I , // / / / / cn. 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DC DUST CONTROL 3.39 / / \ _ \ - \\\ \\ \ Z \ ` \ \\ ` \° o-o— _ - `\ \ \aspo \ 1 _1 I I I / / / / k / I 47039 If SHEET NO. * "VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK" SPECIFICATION NUMBER / \ \ ` I \ \\ \ \ \ \ \\ - - ` \ b \ \ \ \ \ - _ _ - ' - \ \ \ 1 I I / / ' / / / % 5 L Section 5. Stormwater Management Plan (Provide a reduced I Ix17 copy of the latest stormwater management plan. Do not reference only.) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County / 'o�•_1- - - - - -- oO°o \ - \ �� \ - \ /—�< '111 ,�� 000 \ . 92 \ ' AD �szs /\ 000 II\I ' \o°° o\ — `° o I ` -CLINT LINT W. •. S4�� .s i 0 � / _ o00F LET ��\ 0 / ° ° o ° ° o /pO000 SCALE 1= °°0= JyHFM LN to 2/02021 0 30' 0'4RYTF ° °�0 07 \ \ONAL00 0 7117, mE 1 0 / X 1 / / \ / / / /\ \`�\�, ----------- '�, \�� -------------- / / I \\� --- Mo 10/° ¢p / // l ,J// l / \ \ / / /// gp \�\`\- �'"! -__--- �i'i�------------=_`\ '�'- �iii�iii�iir�ii+sii r� _ y /i'' >E 0 0,� // // / / // / �/ I I , 1 / / EFFECTIVE - __ _ _ . ' ` i� / \ - -_ - - - - - - - - - \\ / / i / a o 4 °. Q S ° i i _ �� — _ v y 0 0 / / / / , / / I / / 1 / / / / / FLOODWAY / \ 'E,FEEZ 7 ZOIHYR _! -'_ _ _ _ / - — — y / / / o ~ v w 3 0 0 — J /` / / / , / / FLO0-DPL-4lN PER — — — — — — — _ �T��FR ' ' ' /� ' ' — — — — — ¢ a o 3 / / / / J / / / / PER LOMA / o CASE NO. / OMA CASE NO. — _ — — — — _ _ ' / o / FA gfL / w o s M 21-03-0029Po 0 0 0 0 0 0 0 0 0 0 -�j - - \ ., / / ° �'4� ' / / ' / /A�JFS / / ' _ a � V iri O 21-0 0029P / T , qpp gp6�/ // — °—0000o/0d oo / ooa0-o.00------------------ �'/ __ _-'�/o°°//' A�B�FFF // /�'' ''' / - �MNN a / ) 11 / / o / / oo00p0po -- / oo00oo0°/ / / / �./' /� Zf'-'V 00 90// 0 ° / — T �', 10, PRIVATE DRAINAGE EASEMENT ° °�0 ° — — — — ° / / / / �' F o _ _ ° EFFECTIVE �(?a// �o / i �2' -41-3' — —� _ — — o ° ° ° / �® / // / / �� w v w U =I44— w PER WMA / /oo O CASE NO. / o / p \\ / 21-0�-0029P/ / 416 Lu / — /ITIN / P / , ---- TIN 19.73' 110 / / / � / ' / / / / / W DATE .......... 12807108121 / / II /� I /I // / / / / ... . 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R2 1\1 \1 1 \\ 1 II \ I\/ 11 04 I11/ .r.,� „•I 107 t / // / /...../../" // ...... \ \ \ / \ / I / 1 l I I / / 1 W ° N 425.93' M2\.66', \0 GE Lu PUB U okCCE h-I o \\\ \\� �° / �\.� \ \ — W400'\. EA MEN Q I ° \ TW43 _ °� � 0 0 / `o\\\`\� \\`-\\�\\\\\-' --_- --- \�M-ff'REF1FklI,V 0 \ / /�' \�� \ ``__- `�� C� �s \ I �\�\\\\ - �_- - - - ---� �CY Bn+E{S"9a 0 NI 41 _ JOB NO. 0 o—it 47039 0 \ \ \\ \ 0\\„ SHEET NO. I - C4.04 \\ \\ \ \ 0 / �/ / �\\ \\ \ _ ;\\ �\ \ \\��\\�\ \\\lyo\\\ \�� _ '�_---- \\ \ \\ \\ 1 I 1 1 1 II I I 1 / // \ I \ \ L 0 / / ( // ' /4"JrWj� WOW` - - m NMI / , / / / /'l/ 0/// / , / / , / �' _ _ --------- -- ---- - Ac. / - /iP I/,■ / / / / / / . - - - i ------- - - - - -- - - -- / / , / /� - - - - -_- / / \ 1 ° \�\ '��/ // // II /1 ,/I PI I 1I I // / / / / /' /' ---- - -- l l \ i\ 0 \ \ \ / o \I-\ !bI� /// // I/ / OI1 I .I I / / ,/ "/ / ,/ /// //' .,�' / / - - - - - - - 1 / /i�` `✓/ / I / ,I tom'/ I 1 \ \ I qAN / / / / ' ' AN SAN It 1 11 ° 1 11 If_000 o�. PRE -DEVELOPED AREA `\ \ \• TOTAL AREA = 4.44 AC I I / / / IMPERVIOUS = 0.00 AC 7 TURF = 0.31 AC \ .14AC° WOODED ° 11\\ \ ° �\ 0o \ \ 1 l o1 / \ \� w•\ \ I I \ I 1 \ 1 1 I / � \ / O / \ 'a \ I\ \\ r I\ I 1 \ \ \ \ \ I 1 1 1 1 I o-`.�\\ 1\\`\\l\I b \ \ \�\ \� \ \ 1 1 1 1\ \ \ \\ \\ /\\ \� r 0 X \\ \\ y p \ \ / ° \\\ \\\11I I 01\PQINTOF~\a`a�\�� \\\\\\\\ d C_ 06 \ \\\\\ \\\ \ \\ \ \ ° \ / / / \ =z, 1\ ,\\ PRE -DEVELOPED DRAINAGE AREAS -�' \ 1 , \ I III ' / 1 r: 1 % 1 • IIF� •` � - _ .�I�L"'S31Ej11E9u n 4en�-Si��'��`-J ' • • •' ,� ��` 7`,,I \�;� •�\�1. A�� ' ! '� ►►►►►►mot � _ � II � � ° IILIILIIL�'IIC�' �, -� �� • - ��`�� '�,, �,��' ,�`�� ,� =�. ►�I I , � _ ■ I 4 �� _-ram.--r. .--r=-.--rr.- :. � � L`�� `�� `�� 'y ��' I i�J . - _ - �• _��ji� II w� �� --_- 0" WE s� �=n �� Y Ifl liil w nn a rile r� ♦ ail. un , �� .� - ♦p Y III /-, IIII yy III uu �� '�' by, �� M- ,,. -■' ►_ G III Ily IIII uu au .� �� i ,Iw.:� �. ■ ��' •'�! O� • A III! III Iln yy IIII lul u! .! y\`�, ,��7 �� MEN � to � ►_� � II II - ,a 1• r � � Dy �� wt�� I -- !� IIII ell I eis �► -.� •� _� liV �-�I� e% l m1mk7m I ► 1 __ J� - ram, •�� glll{711, Y klCtllllll■ lk HID89�_ � � � '�IZiD®1 `!I � 161. �e i®i ifs I�®i Q '11�i � ie5 i��f� ■.v -+I '�a'•� �''�� /,��.j�l;...il[�I��t7 I®I T_IS11__._i�1m.��i��.,�� "� ��`�♦��`je /fir,V At� � _ - _ -�;o :. ■- ' , i / !� I •1fi17� • 'ISri�ii �.., I I "�'-' � 1.•7 I / � /� '�� \ ai' I �� i MIA ]eri ! 11 �i� •gym _ , �i • \ ��: __®I_• ��I�EM� �,l � I ��C �• I • 9 �._ Dili �Iiiil ��oppe6P�9iIEr." j �' ii� !!i I�'� r, � i1 ihli �1 i�1 n -I ia------- - 1 ��. �� j it •�• 1 WRM ` 1 ♦ ��i �! dt.I� e a real eo 1 g- r a • Alwal �� 6�/��iw � T d► � f�vw► 1�,,��I�J II. /A /// �i1 LUM �ly � w.�. r - u �� ► �l it tRIN �JI WATER QUANTITY ANALYSIS POINT 1 DRAINAGE AREA ANALYSIS (PRE -DEVELOPED) PRE AREA 1 (ONSITE) AREA = 4.44 ACRES IMPERVIOUS = 0.00 AC. MANAGED TURF = 0.31 AC. WOODED = 4.14 AC. Tc = 6.0 MIN. Q (CFS) V (AC -FT) 1 YEAR 1.93 0.111 10 YEAR 12.57 DRAINAGE AREA ANALYSIS (POST -DEVELOPED) POST AREA 1A TO SWIM A (ONSITE, DETAINED) AREA = 4.44 ACRES IMPERVIOUS = 2.47 AC. MANAGED TURF = 1.97 AC. WOODED = 0.00 AC. Tc = 6.0 MIN. Q (CFS) V (AC -FT) 1 YEAR 10.86 0.482 10 YEAR 26.92 FLOW ROUTED THROUGH SWIM A Q (CFS) 1 YEAR 0.34 10 YEAR 22.79 CHANNEL PROTECTION (ENERGY BALANCE): /� `"DEVELOPED < 0-80•(`PRE-DEVELOPED*RVPRE-DEVELOPED)/RVDEVELOPED QMAX (1-VR) < 0.80`(1.93. 0.111 AC -FT) / (0.482 AC -FT) = 0.36 CFS Q,1_YR> POST -DEVELOPED = 0.34 CFS OK STORMWATER NARRATIVE THIS PROJECT INCLUDES THE CONSTRUCTION OF TWO (2) ROADWAYS, A RESIDENTIAL COMMUNITY, AND ASSOCIATED UTILITIES AND LANDSCAPING. ENERGY BALANCE REQUIREMENTS WILL BE MET THROUGH THE USE OF A WET POND. FLOOD PROTECTION REQUIREMENTS FOR THE 10-YEAR STORM WILL BE MET BY RELEASING THE STORMWATER INTO THE MAPPED FLOODPLAIN, IN ACCORDANCE WITH 9VAC25-870-66, SECTION C.3.C. STORMWATER QUALITY WILL BE ADDRESSED THROUGH THE INSTALLATION OF A WET POND AND THE PURCHASE OF OFFSITE NUTRIENT CREDITS. DOWNSPOUT SPLASHBLOCKS SHALL BE USED FOR ALL ROOF DRAINS. �\LEGEND %r �..•,-ZONE 2 kip III, ,A ♦ / 1 BMP PLANT SCHEDULE BOTANICAL NAME COMMONNAME MIN. INSTALLED SIZE ROOT SPACING ELTANDRAVIRGINICA ARROW ARUM 6"POT PLUG 12"o.c. ZONE 1 YMPHAEA ODORATA RAGRANT WATER LILY 6" POT PLUG 24" o.c. ONTEDERIA CORDATA'BLUE' LUE PICKEREL WEED 6" POT PLUG 18" o c. OLVGONUM PUNCTATUM MARTWEED 6"POT PLUG 12"oc. AREX STRICTA TUSSOCK SEDGE 6" POT PLUG 12" o c. RIS LOUISIANA MARGARET HUNTER' BLUE SWAMP IRIS 6" POT PLUG 12" o c. ZONE JUNCUS EFFUSUS OFT RUSH 6'POT PLUG 12"oc. OBEUACARDINAUS ARDINAL FLOWER 6"POT PLUG 18"oc. SCIRPUS VALIDUS GREAT BULRUSH 6" POT PLUG 12" o.c. I,•66,46 LTH U�••I , CLINT W. S F LET Lic. N 154380 12103/ 2021 t,t,l01 ^� E 0 o N � N C > E w a E Lu Q LL , 3 p LL Wu N _j V oMo Z -m O w rn o " a (7 W a M : o x U) o In �i vry Z Z x� >� O W ~ 0m > p 2 LU U 0_ 00 �H O � a 0 O O x ti cD � W 0 ILL LU F N Q N z O DATE 0 07108121 } DRAWN BY J. FOX • DESIGNED BY • C. SHIFFLETT • CHECKED BY • C. SHIFFLETT SCALE 1"=30' • N � w 0 � z I Q J z � ce LLJ z Q w > Z w/wI'� � (J 0z JmQ W Q O LL Lu Iu c) o ~ W " C� G Q O 0 cn 0 2 0 U) JOB NO. 47039 SHEET NO. C6.00 L DEQ brghua RunaffRedu doa Method New Development Comphame5prmdsheer -Version 3.0 r 2011 BMP Standards and SWIficatlarn 02013 Ole BMP Standank and Specifications PgIM Na... Southwoodlage2 Bate: 6/29/202021 mmowrnmllrlrm a MEDes1y,5Pee4;,vbom nub 2013 Draft StdS & Specs Site Information Project (Treatment Volume and Loads) lmper,hamc 'Iss..) constants Annual alMall (lnAes) 43 Ta,. Reln/all Eve. IlnAes) 1.00 Tmel Phmahorus(1) EMC Img/LI 0R6 Tool Ni g,n(TN)EMC(,/4 1.86 Ta,ae TP Load (lb/xre/yr) 0.41 Pl u"Ves conenbn fatter) 0.90 Forest/Opea Space Cwer(aom) 0.00 Weighted Rv(laresq 0.00 %Forest 0% Manage6Tuff Coner(acres) 232 WelgMed ft RAI) 0.20 %Managed Tuff 48% Impervbus Cover(acres) 2.56 Rv(Imp rwo.$) ess %ImPervloin sz% SeNee(acres) 4.BB Ste. als BOO 232 256 Rarely Coa idents flvi A Solls BSogs CSo4 OSolls Fmen/Open5pare 2.22 Rea 0a4 0.0 Mse,.n 0.15 010 022 0.25 Imperviom Cover 0.95 035 095 0.95 Treatment Were 0--is (anek) TrMmeMWlurelcublctret] 10$10 TP Load llb/yQ 6b0 TN L- O.-n'l tal 47.14 Site Results (Water Quality Compliance) Area Checks FOREST/OPEN SPACE (ar MPERNOUS LOWER tar MPERNOUS COVER TREATED (ar MANAGED TURF AREA (ar MANAGED TURF AREA TREATED (ar AREA GRECR dMu mPutsls nn4unt.alnes cakuMwncelk nA. A D A. E PEREAURFOR 147 J 0.00 0.00 0100 am OR. Site Treatment Volume (it) aa$3o Runolf Reduction Volume and TP By Drainage Area RLMOR REDUCTION wLIME ACHIEVED (fta Te LOAD AVAILABLE fOR REMOVAL (Ib/y, TP LOAD REDUCTION ACHIEVED (b/w W LOAD REMAINING pb/yr NITROGEN LOAD REOURIONACHIEVEO (R/yL 13M 0.00 11 0.00 11 0.00 11O.OJ 13.40 Total Phosphorus FNAL POST DEVELOPMENT TP LOAD(Ib/p 6.60 TP LOAD REDUCTION REQUIRED(u1W 1. TP LOAD REDUCTION ACHIEVED pb/yr 3.12 TP LOAD REMAINING p lyi 3M REMAININGTP LOAD REDUCTION REQUIRED pb/y,l: 1.43 Total Nitrogen (For Intormatim Purposes) POST DEVELOPMENT LOAD(b/yr 4T.24 NOROGENLOADREDORIONACHIEVED (Ib/y, 33M REMAINING POST-0EVELOPMENT NITROGEN LOAD (Ib/yr 33.M g • I IIIs _ T! ! • ��OII .1r' liil ONE nn QUALITY CALCULATIONS: TV = 10,171 CU. FT. VOLUME REQUIRED = 1.0 * TV = 1.0 * 10,171 = 10,171 CU. FT. VOLUME PROVIDED AT WSE (404.00) = 10,296 CU. FT. VOLUME PROVIDED AT RISER CREST (406.75) = 13,506 CU. FT. TOP OF DAM = 409.00 �6'� 1.12' FREEBOARD 100-YR ELEV. 407.88 w CREST ELEV. 406.75 WSE ELEV. 404.00 2.5" X 2.5 ORIFICE W/ TRASH RACK INV = 404.00 48" RCP RISER W/ ANTI -VORTEX DEVICE INV OUT 400.94 (18" HDPE) 86.78' - 18" HDPE @ 2.0% POND BOTTOM 400.00 8' DIA. X 1.5' POND BOTTOM TO BE CONC. BASE COMPACTED CLAY LINERS EMBED 6" IN CONCRETE NOTES: 1. TRASH RACK TO BE INSTALLED ON ORIFICES AS SHOWN ON DETAIL ON THIS SHEET OR APPROVED EQUAL. 2. IMPERVIOUS CORE AND CUTOFF TRENCH SHOWN FOR INFORMATIONAL PURPOSES ONLY. FINAL DESIGN TO BE PROVIDED BY GEOTECHNICAL ENGINEER. 3. A QUALIFIED GEOTECHNICAL ENGINEER SHALL BE ONSITE DURING CONSTRUCTION OF THE POND TO ENSURE ALL RELATED REQUIREMENTS ARE SATISFIED SWM A, WET POND (LEVEL 1) DETAIL No Scale SOUTHWOOD REDEVELOPMENT OVERALL WATER QUALITY ANALYSIS 1-YR ELEV = 406.68 10-YR ELEV = 407.55 100-YR ELEV = 407.88 EMERGENCY SPILLWAY, 45' WIDE INV. 407.50 IMPERVIOUS CORE AND CUTOFF TRENCH INV 399.20� WATER BALANCE CALCULATION (DEQ BMP SPECIFICATION NO. 14 SECTION 6.2) DIP >ET+INF+RES-MB 48„ > (8„) + (7.2") + (24") (011) 48" > 39.2" Plan Number VRRM Total Area Phosphorus Reduction Required Phosphorus Reduction Provided Credits Purchased % Phosphorus Treated onsite WP0201900062 21.58 9.77 8.52 1.25 87.21 % WP0202100004" 7.49 8.52 6.67 1.22 78.29% Offsite WP0202100004 2.91 0.18 0.63 0 350.00% PHA Block 11 1.27 1.5 0.66 0.84 44.00% PHA Block 12 2.84 3.48 2.7 0.79 77.59% Village 2 4.88 4.6 3.12 1.48 67.83% Total 40.97 28.05 22.3 4.1 79.50% •••'• a •IN tl�1a-- I ANY Ass 1 AM JEM ��! , 39 - - J N'. lam yA., I \ ' �,� ��`\ • \_ �� 1♦ �� 1��•�,1 ■ ... �S7 -All 1 V � �S ilinIli ?��h1/111Bllll �W1As ►�� __ 1 B � �1►' I Y ■ i/ r, _ati.�� :I%.��//'fI'�ii�� ..�JAiL/L� "�i ��1�� ei=ice `'r am\\►,WIN eaa ■■ r I'II.� 1 ► �� S�'-s � 91 • • • • ■ tag s a �� L`�� I\� s III It a • • � • . � / � • ��`'�I��'.�''�� r� r Ba,•alT OUTLET 200 _ R 10' FOREBAY AT OUTLET 100 VOLUME PROVIDED: CONTRIBUTING IMPERVIOUS AREA 0.1" RAINFALL VOLUME: TOTAL POND TREATMENT VOLUME 10% OF TREATMENT VOLUME: FOREBAY AT OUTLET 200 VOLUME PROVIDED: CONTRIBUTING IMPERVIOUS AREA: 0.1" RAINFALL VOLUME: TOTAL POND TREATMENT VOLUME: 10% OF TREATMENT VOLUME: FOREBAY SIZING DETAIL No Scale SCALE 1"=20' 0 20' ao' OUTLET 100 1,144 CF 2.11 AC 766 CF <_ 1,144 CF OK 9,948 CF 995 CF <_ 1,144 CF OK 1,006 CF 0.13 AC 47 CF <_ 1,006 CF OK 9,948 CF 995 CF <_ 1,006 CF OK 24 TW ELEV. 405.00 WSE ELEV. 404.00 BASKET EDGE p 60" U LONG EPDXY - COATED #4 REBAR BW ELEV. 400.00 RIPRAP-LINED PRE-TREATMENT CELL 1 Al STONE FILL GABION BASKET FOREBAY WALL No Scale I p 0 0 0 o °00 °0 DO 000 00000000 00000000000 o°°0 °0i000° °0°Oo°Oo°O 0 49 o°c°oo°oo°° v• e 0 Op O••0 p0 °° ° %° pp p •p •p �0 p p• O. 0 ppOp p DO Isometr is 1/4" HDPE plate pule culvert bolted to structure. HDPE structural plastic - 1/4" plate and grating I with V holes and a min. of 30% of opening area l manufactured by Plastic ° Solutions Inc. or equal. 00 00 OQOO �ODO°O 00000„O, O 000 DDO O shown with optional plate cone. apron HDPE structural plastic 1/4" plate and grating Section with 1" holes and a min. of 30% of opening area manufactured by Plastic 3" Solutions Inc. or equal O O 0 0 o ° o + o single BMP Elevation orifice TRASH RACK DETAIL No Scale WATER QUALITY ANALYSIS SITE DATA POST -DEVELOPED PROJECT AREA FOREST/OPEN SPACE = 0.00 AC MANAGED TURF = 2.28 ACRES IMPERVIOUS COVER = 2.56 ACRES POST DEVELOPMENT LOAD (TP) (LB/YR) = 6.60 MAXIMUM PERCENT REDUCTION REQUIRED FOR REDEVELOPMENT = 20% TOTAL LOAD REDUCTION REQUIRED (LB/YR) = 4.60 LB/YR TOTAL LOAD REDUCTION ACHIEVED (LB/YR) = 3.12 LB/YR REMAINING TP LOAD REDUCTION REQUIRED = 1.48 LB/YR* *REMAINING TP LOAD REDUCTION TO ADDRESSED WITH THE PURCHASE OF NUTRIENT CREDITS. VA DEQ STORMWATER DESIGN SPECIFICATION NO. 14 9.3. INSPECTIONS AND ONGOING MAINTENANCE TASKS MAINTENANCE OF A WET POND IS DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE POND, INCLUDING THE FOLLOWING: • MEASURE SEDIMENT ACCUMULATION LEVELS IN THE FOREBAY. • MONITOR THE GROWTH OF WETLAND PLANTS, TREES AND SHRUBS PLANTED. RECORD THE SPECIES AND THEIR APPROXIMATE COVERAGE, AND NOTE THE PRESENCE OF ANY INVASIVE PLANT SPECIES. INSPECT THE CONDITION OF STORMWATER INLETS TO THE POND FOR MATERIAL DAMAGE EROSION OR UNDERCUTTING. • 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. • INSPECT THE POND OUTFALL CHANNEL FOR EROSION, UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, ETC. • INSPECT THE CONDITION OF THE PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SPALLING, JOINT FAILURE, LEAKAGE, CORROSION, ETC. • INSPECT THE CONDITION OF ALL TRASH RACKS, REVERSE -SLOPED PIPES, OR FLASHBOARD RISERS FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION, ETC. • 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. • INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE POND FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING, AND MAKE NEEDED REPAIRS IMMEDIATELY. BASED ON INSPECTION RESULTS, SPECIFIC MAINTENANCE TASKS WILL BE TRIGGERED. EXAMPLE MAINTENANCE INSPECTION CHECKLISTS FOR WET PONDS CAN BE ACCESSED IN APPENDIX C OF CHAPTER 9 OF THE VIRGINIA STORMWATER MANAGEMENT HANDBOOK (2010) OR AT THE CWP WEBSITE AT: HT-rP://VWWV.CWP.ORG/RESOURCE_ LIBRARY/CONTROLLING _ RUNOFF_ AND DISCHARGES/SMATM (SCROLL TO TOOL& PLAN REVIEW, BMP CONSTRUCTION, AND MAINTENANCE CHECKLISTS) FOR A MORE DETAILED MAINTENANCE INSPECTION CHECKLIST, SEE APPENDIX B IN CWP STORMWATER POND AND WETLAND MAINTENANCE GUIDEBOOK (2004). I CLINT W. S F LET F Lic. N 4 543■• 12103/ 2021 t't',WZ 01 AL V-co M E M ° rn u N � N 0 > E a E w � .WU Q LL 3 0 p ILLED w O `m _J V oMo Z a - n F•I O �y a w 30 Sx VV) o a ""=LL w 0 vry U > Z O Z W L1On. = ~ 00 i N LU O wed U a_ M W Z O � a M O O x ti (7 � Lu w F N Q N z O VI DATE 0 07108121 } DRAWN BY 1. FOX • DESIGNED BY • C. SHIFFLETT • CHECKED BY • C. SHIFFLETT SCALE 1 rr=30' � N W Q J I\� a LU w/ z li 2: / I - a J J �a 0�� J 00 oa W LL U) z L O > Q O W " 0 0 0 0 2 0 JOB NO. 47039 SHEET NO. C6. 01 0 0 3 a 90 . 0 20z 20 o� C aw E o a E N m a0 0 WM t7 3 z„ 0 � a F m o r �3 n Mm 2 Y 8N m o d� 0 = >u 06 �a 10 a 0 MoAT tN a M ° C 0 nE AT c E F= L TH / \ /\ �_� \ \ \\ \ \ \ ° O ° o? \ \ _ i \ \ _ \ \ j / ,` -/ NAD 83 10 /' `\\ / \ / /� , _--------�11 \\ -\ \ \ \ °poO°0 OoocL° `� ` �� SCALEI"=30' /,09ooOpO00000 °000 J OL LY _ _ _ °,o 4\ \ \ - - ' / /' \ ` \\ \ \ \\ \/ ' \ / ` / / // 1 II II c '' '' 11 \/ / _ _ - - - y \ \ \ X (VgRYTERpB�2E U 0 30' _ 60' \ \ 1 _ \ 1 //00 // X 11 I// r-/ /// // \ / /// /\ `�\\�,�_``------------- _ ��_��,�� \� + - ------------ / /,'� '' I __\- / /o 406 / / / l l l 1 1 / / / 40g 1 �\ - - - - - ' , i / - ` _ _ - - - - - - _ _ - - - ' / ' ' / / Q S o _ -o �� a_ o-woo 001600 , ///// I \ / 1 /' EFFECTIVE \ -_ i _`_ /--------- - - _ // / 09° _ _ -- 0 0 / / / / / I / / 1 // / ' FLOODWAV / \ EFEECTNE ZOI�Y-R_ - -'_ _ =f 6 ° - // /// / /// / /l ,/i PERLOMA o /- -- o FLOODPL-4lN PER / CASE NO. / X \ // /> / 5 /i / OMACASENO. --- --_ _-\ /' / / \ \ / / r ; , / / d / 21-03-0029Po 0 0 0 0 0 0 0 0 0 0 _�j _ - - .- / 0 eiQ / 21-0 0029P T / ' 4pS /,////// / 4p6�/ // // ° p000o%00' oo °oa�o'.o - -- - ---------------------- // - / 0°/ '�A�gC' 1 / / / / °oo 'o°/ r/ 0-0 10, ----- 0 - / / 0 /o �� _ _ _ �o 0 0 j� / / ® / / / / ' EFFECTIVE' �(?/�� / ♦~ 41�'' _� __----- _----- -I14- - - _ -�� / CASE NO. ° \; 21-M-0029//'�/ 210 212 ' v / 416 - - - / / / / ' // /' /' /� / / ✓/ / / /'' l/ l 6 �'/ M / / / ■■■� / i �.`' 214 ♦� ----- ---- -- A18- / /' / //ram/ /r / ■■■■ -- ---- ■ / / / ' / r 216 _ - o / . _ 91 136 /' / 137 ♦ 13 - � / _ - - - - _ �♦ _ _ I / / / / / / / / ' , / / / / it /i / / 138all / 1 II ', I I / / / I 6 I/ I I I I o / •� / / / / _ _ _ _ / / 1� 140 _ _ / I W135 W N\ i 140 ■ ■� ■ ■■■■■ ■ ■■ E, ■■� ■■ ■ i f■■ III - - \ y' \ \ \ y/ / / / I II a �� 8 13 a v' ♦ ♦ ♦ �/ �'i `°� _ , ?� �� `ir c -o \\ / / / ,a 204 I v / v o/ `\ � � 1 /' // // i /r �\ \ \\ 1 1\ \I \ � \\a \■ \ 1 s / ♦ 124 SA _ _ _ N - - - - - - - - - - / / \ \ \ \ \ \ 1207 0� T - o\ \ \ \ v\ ' AC$A 132 / / 121 / / ■ ■ / - - - - - ��°�\\\ \��w \ \\\ \ ■ E EMENT 122 / ■ I / ' : '■ --- ------- -- - - - - -- - -- \..\ \ \ / 131 �/: / ■/ / ■■ ' ■ / ■/ ■■ ■ ■■ fit■ ■1• ■■ / \ 40 202 \° \ Y 424 �\o \ 426 o 114 i, / 1 / �28 , 118 � ' / MEMO I 1 I IIIII I \ \ \ \ \\� \ 1 I I I •I ' \%\ `C� / / / / /// R '/30 / \/ /_'I \_ /'__ , / / \% N 103 ' A / / 112 •� 1 110 ■■ 00\\\\\ \ \ \d \ I 1 I i / �N♦��105 ..� �/ / _ �__ ° \\ ^\ \\ 1 /106 \ 110 /a a' \ \ / �4 °o AIRJ1 \ I I I i ��p\/ / S, ■ /�_ ' / \ \ \ \\ \\ \ / / ° ° \ \ �\ ` - - - - - -\\ \ \ \ \ I \ ' \\ I 1 6' \� ` 1 0 I I 1 ,/ Y /' / , /' N i • I , , / / , \ ` \ \ \ \ I \ 1 / / o \ \\, ��\ I \o III Emil M O o 1 /'o \ \ \\ \ o 1\ A 1 2 1 / 104 1 oo`� \\\ \\\` b \// �\ \ \�\�\\ \\\ \ \ \ \\ \ \ \ 1 0 -, \ as 01 ` o / / \ \ \\ �\- - \ \ \\ \\ \ - - - - _A2 i / / IV \ 40 / , / \ \ � \ _ \\ q \ I \ \ \ \ \ ` _ - - �.✓+r stir '3-"' 1 1 / 1 / l / \ / / / / N.'\ \ I O° Inlet# Total (Ac) C 104 0.12 0.73 106 0.08 0.69 108 0.18 0.73 110 0.20 0.81 112 0.23 0.67 114 0.07 0.72 116 0.26 0.40 118 0.27 0.55 122 0.10 0.56 124 0.17 0.73 126 0.34 0.69 128 0.18 0.81 132 0.07 0.73 134 0.05 0.84 136 0.09 0.76 138 0.25 0.81 140 0.46 0.72 202 0.03 0.70 204 0.03 0.44 206 0.03 0.44 208 0.04 0.41 210 0.05 0.42 212 0.08 0.44 214 0.08 0.47 216 0.04 0.58 i �1 CLINT W. S F LET Lic. N . 54380 12103/ 2021 t,t,l01 AL � co M E 0 o N � N C > E w v E Q LL o 3 0 LL w o m ° Ly LM Q�_j Vo° J -u M C7W NV w � 3:o x oa =LL ti = N =v>Lr! F Q EO10 N 00 W M LM T LU F 0 DATE 07108121 DRAWN BY J. FOX DESIGNED BY C. SHIFFLETT CHECKED BY C. SHIFFLETT SCALE 1"=30' w (uj V 1� I a � a z � W 1 U a LLi � Ora w J m Q waz O H-I W z o C) O W O LU Q z 0 0 2 0 U) JOB NO. 47039 SHEET NO. C6. 02 Section 6. Pollution Prevention Plan. (reference County Code 17-404 and State Regulation 9VAC25-880-70 part II section A.4) A. Plan showing pollution activities and prevention practices (Provide a reduced I Ix17 copy of a site plan on which all of the following activity locations are clearly marked. Keep this plan up-to-date with ongoing site changes and inspections.) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County / I \ moo' / / \ / - - o ° - -O o ° ° ° _ _ - - - o 't� o'_—I oo—' o////, O O 000, \ `\ pO`po0o/\ pO� / SCALE C\IA- _/ // L\ \E 1"=/ \ // 3/ \ \0/ ' 00ppO,C 000 /S70 30' \ �I \ \ 6\\ /0- ' \ —OVIAR ooW/DJ o Nk°- ------- _------ ------ ----- - - - - - -- p° ftw- - - - -- - - - -- woo Most I�I ° / FLOODWAV '° � / — o Z CASE NO. CASE NO. 0 21-03-0029P o d00000ppOOOO1-0 -/ 00O OoO� o'°/ 000cr000 Al- ' _ O0/ NOW °� 00'ppLIMITS OF o0pO0o000000 ° 0pO° o , O DISTURBA413E 0 O 00-0 O4.88AC. J------- —000/ _wooIII _o _ P 13EECTIVE FLOODPyAIN \ /\ /\ CASE NO. / PERIOMA �5— 21-Z-0029PSF EFFECTIVE 41 / FLOO--DPLAINI 0 -------------------- / i / \/ PER LOMAI o CASE NO o 21-03-00N ___ - /I 1/ 0 IS - - - - - - - I�p/I / NCRETE WASHO-OCONSTRUCTIONP // DEDICATED CONCRETE - - - - - _ ENTRANCE ' TRUCK WASHOUT - - - - - -- 1II o/ ----CE L — — — — \' \°I AN AN SAN ' '-- ---- ---- ----- ---- - - -- -- \ \ � \ - - - - - - - - - - - - TP IN SFNk DD 411 STOCKPILE AREA41* / \- - - - -- RAIN GAUGE It Y' \O� 00 9 14 \\d ABOVE GROUND FUEL CONTAINER WITH \ O \ IMPERMEABLE HEAVY -MIL LINER. VOLUME o, - O\ ` / LES ° I I SUFFICIENT TO CONTAIN STORED FUEL TS\BATEMPORARYTOILE ° VOLUME + 10% (GAS/DIESEL, 66' 1 I O o MORTAR MIXING STATION 1V1 TS ' / I \\ o I \\ I \ 1 1 1 DD I I I / / / ' / / / ' / / CONSTRUCTION / EROSION CONTROL LEGEND m / 1 \ 1' 1 1 f I I I ,' ' / TRAILER \ / o I\ 1 \ \ \ \ \ 1 I 1 I / / / / \ o y f DUMPSTER \ /\ \ 1 \1 \ \ 35' TH CLINT W. S F LET Lic. N « 54380 12103/ 2021 w SOIL TYPE BOUNDARY \ 0 1 \ \\ \ \ o \ \ \ \ I \I CE CONSTRUCTION ENTRANCE 3.02 \ \ \ �\` ' \ \ \ \ \ \ \ \ 1 \\\ \ o SF �c iF SILT FENCE 3.05 \ \ \ \\ �\ \ \ \ / / / / , a 1 \ ' / a \ SF / / / / IP INLET PROTECTION 3.07I, DD / / / / / ST SEDIMENT TRAP 3.13 x 01 SB SEDIMENT BASIN 3.14 � � _ — ! � ` � CONCENTRATED — 9 STORM WATER t, OP3 / DISCHARGE, OUTLET PROTECTION 3.18 \\ \\ \�\\ �\\ TS TEMPORARY SEEDING 3.31 PERMANENT SEEDING 3.32 MU MULCHING 3.35 BM BLANKET MATTING 3.36 TP TP TREE PROTECTION 3.38Nk DC DUST CONTROL 3.39 * "VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK" SPECIFICATION NUMBER V In o Z (] W U W U O w a w ti Lu w F 0 DATE 07/08/21 DRAWN BY J. FOX DESIGNED BY C. SHIFFLETT CHECKED BY C. SHIFFLETT SCALE 1"=30' N rW V P" F__1 Q d z1 W > Q ^� LL d I..L _j 0 m O H_1 waz LL > O LU C O a L" 0 W L Q C O O 0 T� LL i O JOB NO. 47039 SHEET NO. PPP-1 L TH m ' • i- — �' *71 Um Rim ' .I „ tsue. •. i/. 11 \ � 0� iW— % ��-- •ice I ,fir I � � �'® � -� �� !� ��I � � I�I Iwo vi!�� w► �� c�'v •` �� • ,fir �� Y V � � � h ��, " �.� �� i i 11AWINA 7 CONCRETE WASHOUT FOR 0 M �, ml.. DEDICATED CONCRETE.;_ ♦ / \\.� \I G1 1�! ■ - I►I `� iil— MEN i>♦ � ��/�■lfi1� 1I�■ ��II �ITii� �—'ram /�Ilt�l�iiCil - ; ��i►`■ � , i� . -/�� . lei i 7 5 �MINIM a U. ISM -• .�e�—J R M, 44 �� •cr/ l � Imo, 1`; f.L• < .v . , ,'. , _.mil - � �-, ►�� I Paz;�, ►� , ►� all 111M HE 1 _ ILTIRi to] TRAILER ,z ��, '�., ��- - • �, �h v CLINT W. S F LET Lic. N . 543•• 12103/ 2021 WZOI1AL V-1-0-0 \\ \\ o I \\ \\ \ � AOS �BM 1 R2 1 1 1 � 1 I I I / / / ' / w SOIL TYPE BOUNDARY \\ o \ \ \ \ I \I \ 1 \ \ I I / ' ' PS CE CONSTRUCTION ENTRANCE 3.02 SF X X SILT FENCE 3.05 4 \ \\ \ IP INLET PROTECTION 3.07 \ \ \ \ SEDIMENT TRAP 3.13 s6 SEDIMENT BASIN 3.14 \\\ 1 \` CONCENTRATED �., ` STORMWATER OP DISCHARGE 445 \\��\ \ \ _ -�\\ \\\\\ \\\�_ / / / /////// //4 - ,// / / / / /'1' ® OUTLET PROTECTION 3.18 TEMPORARY SEEDING 3.31 PS PERMANENT SEEDING 3.32 — — — — 1 \ \ \ �� O \ \ °ro - - - - _ \\� \\ \ \ \ \ _ _ _ _ _ SF MU MULCHING 3.35 415 SF / BLANKET MATTING 3.36 / _ - \ TP TP TREE PROTECTION 3.38 / / I \�� ' �� • , , �\\ e DC DUST CONTROL 3.39 * "VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK" SPECIFICATION NUMBER00 Lu 0 DATE 07108121 DRAWN BY J. FOX DESIGNED BY C. SHIFFLETT CHECKED BY C. SHIFFLETT SCALE 1"=30' JOB NO. 47039 SHEET N0. PPP-2 L is. sources or rouuranrs, vocations, anu Pollutant, or Pollutant Location on site Prevention Practices, Generating Activity Control Measures C. Sources of Pollutants continued. Common activities and minimum control and prevention practices Pollutant, or Pollutant Location on site Prevention Practices, Generating Activity Control Measures Follow Erosion and Sediment Control Clearing, grading, excavating, and un- Land disturbance area Plan. Dispose of clearing debris at stabilized areas acceptable disposal sites. Seed and mulch, or sod within 7 days of land clearm Cover storm drain inlets and use drip pans Paving operations Roads and driveways and absorbentloil dry for all paving machines to limit leaks ands ills Concrete washout shall occur in area Direct concrete wash water into a leak - Concrete washout and adjacent to the construction entrance as proof container or leak -proof settling basin cement waste designated on the Pollution Prevention that is designed so that no overflows can Plan. occur Enclose or cover material storage areas. Mix paint indoors in a containment area or Structure construction, stucco, Structures in a flat unpaved area. Prevent the painting, and cleaning discharge of soaps, solvents, detergents and wash water, paint, form release oils and curing compounds. Dewatering if necessary when Water shall be filtered, settled or similarly Dewatering operations converting culvert inlet protection treated prior to discharge as shown on shown on plans plan. Designated areas for material delivery and Material delivery and storage Adjacent to construction entrance and storage. Placed near construction construction trailer, entrances, away from waterways and drainage paths Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Pollutant, or Pollutant Location on site Prevention Practices, Generating Activity Control Measures Material use during building process Building areas Follow manufacturer's instructions. MSDS's attached. Waste collection area will not receive a substantial amount of runoff from upland areas and does not drain directly to a waterway. Containers have lids covered before periods of rain, or are in a covered Solid waste disposal As provided by contractor area. Scheduled collection to prevent overfilling. MATERIALS NOT TO BE BURIED ON -SITE Convenient and well -maintained portable sanitary facilities will be provided, and Sanitary waste Current locations shown on plan located away from waterways or inlets. Such facilities shall be regularly maintained. Apply fertilizers in accordance with Landscaping operations Landscape areas shown on plan manufacturer's recommendations and not during rainfall events To be treated in a sediment basin or better Wash area is located at the construction control as specified on plan. Minimize Wash Waters entrance. Adjacent diversion dike will the discharge of pollutants from divert wash water to sediment trap. equipment and vehicle washing Vehicle and equipment washing Designated areas and details shown on Provide containment and filtering for all plan wash waters per the plan Minimization of exposure to precipitation and stormwater. Minimize the exposure of building materials, building products, construction wastes, trash, landscape materials, fertilizers, pesticides, herbicides, detergents, sanitary waste, and other materials present on the site to precipitation and to stormwater. (Identify all non-stormwater discharges to occur on your site. Keep this plan up-to-date with ongoing site changes and inspections. See CGP, 9VAC25-880-70 section E for examples of non-stormwater discharges.) D. Non-stormwater discharges Discharge Pollutants or Pollutant Constituents Location on Site Dust control water Sediment As shown on plan Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Discharge Pollutants or Pollutant Location on Site Constituents E. Persons responsible for pollution prevention practices (Provide the names and contact information for all persons responsible for prevention practices as listed above.) Mr. Andrew Vinisky 967 2nd St SE Charlottesville, VA 22902 434.293.9066 F. Response and reporting practices Minimize discharges from spills and leaks. Minimize the discharge of pollutants from spills and leaks and implement chemical spill and leak prevention and response procedures as follows. Respond to all spills, leaks and discharges as follows; 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. Identify and stop source of discharge. Use absorptive materials to soak up as much chemical as possible. Place all contaminated material in trash containers for disposal. Report all spills, leaks and discharges as follows; (Provide detailed response and reporting practices according to 9VAC25-880-70, Part II, section A.4.e.) Reports will be made to the following: Virginia Department of Emergency Management Emergency Operations Center (EOC) Phone: (800) 468-8892 Spills large enough to reach the storm sewers will be reported to the National Response Center at 1-800-424-8802. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County G. Pollution Prevention Awareness (Describe training and procedures to provide awareness and compliance for all measures in this document; waste management, wash waters, prevention measures, etc.) The registered land disturber shall oversee all construction activities to implement and maintain pollution prevention measures. As such training and procedures shall be provided by contractor for each worker on site before they begin land disturbing activities. Training on implementation of erosion and sediment control devices/procedures must be provided by registered land disturber each time a new E&SC procedure is constructed. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 7. Discharges to impaired waters, surface waters within an applicable TMDL wasteload allocation, and exceptional waters. This site discharges to impaired waters as detailed on the following sheets. Enhanced inspection frequency is required as outlined below: (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. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Sediment TMDLs for Moores Creek, Lodge Creek, Meadow Creek, and Schenks Branch Albemarle County and Charlottesville City, Virginia Submitted by: Virginia Department of Environmental Quality Prepared by: Virginia Tech Department of Biological Systems Engineering Revised: January 20, 2016 r Biological Systems Engineering CENTER for VT-BSE Document No. 2015-0003 ®VirgIniaTech STUDIESWATERS !oven! the Future at VIRGINIA TECH Project Personnel Virginia Tech, Department of Biological Systems Engineering (BSE) Gene Yagow, Sr. Research Scientist Karen Kline, Research Scientist Carlington Wallace, Graduate Research Assistant Rebecca Zeckoski, Research Associate Brian Benham, Associate Professor and Extension Specialist Virginia Department of Environmental Quality (DEQ) Tara Sieber, Valley Regional TMDL Coordinator Nesha McRae, Non Point Source TMDL Coordinator, VRO Don Kain, Valley Region Water Quality Monitoring and Assessments Manager James Shiflet Craig Lott, Central Office For additional information, please contact: Virginia Department of Environmental Quality Water Quality Assessment Office, Richmond: Craig Lott (804) 698-4240 Valley Regional Office, Harrisonburg: Tara Sieber (540) 574-7800 Table of Contents LIST OF TABLES LIST OF FIGURES........................................................................................... VIII LIST OF ACRONYMS......................................................................................... IX EXECUTIVE SUMMARY..................................................................................... X CHAPTER 1:INTRODUCTION ............................................................................1 1.1. Background................................................................................................1 1.1.1. TMDL Definition and Regulatory Information.......................................1 1.1.2. Impairment Listing................................................................................1 1.1.3. Pollutants of Concern...........................................................................3 1.2. Designated Uses and Applicable Water Quality Standards ........................4 1.2.1. Designation of Uses (9 VAC 25-260-10)..............................................4 1.2.2. General Standard (9 VAC 25-260-20)..................................................4 CHAPTER 2.- WATERSHED CHARACTER12AT/ON...........................................7 2.1. Water Resources........................................................................................7 2.2. Eco-region..................................................................................................8 2.3. Soils and Geology......................................................................................9 2.4. Climate.....................................................................................................10 2.5. Land Use..................................................................................................10 2.6. Biological Monitoring Data........................................................................12 2.7. Water Quality Data...................................................................................21 2.7.1. DEQ Ambient Monitoring Data...........................................................21 2.7.2. DEQ Metals Monitoring Data.............................................................26 2.7.3. DEQ Polycyclic Aromatic Hydrocarbon (PAH) Monitoring Data ......... 28 2.7.4. DEQ - Other Relevant Monitoring or Reports.....................................30 2.7.5. DEQ Permitted Point Sources............................................................34 2.7.6. VCU InStar (http://instar.vcu.edu) - Fish Inventory Data ....................36 2.7.7. 305(b)/303(d) Combined Report Monitored Violations .......................36 2.7.8. Virginia DCR Data..............................................................................39 2.7.9. Local Sources of Information.............................................................40 2.7.10. Related TMDLs and/or Implementation Plans..................................43 2.7.11. Sanborn Insurance Maps.................................................................44 CHAPTER 3: BENTH/C STRESSORANAL YS/S...............................................45 3.1. Introduction............................................................................................... 45 3.2. Analysis of Stressors for Moores Creek...................................................46 3.2.1. Eliminated Stressors..........................................................................46 • Ammonia..............................................................................................46 • Metals...................................................................................................47 • pH.........................................................................................................47 • TDS/Conductivity/Sulfates....................................................................47 • Temperature.........................................................................................48 3.2.2. Possible Stressors.............................................................................48 • Hydrologic Modifications.......................................................................48 • Nutrients...............................................................................................48 • Organic Matter......................................................................................49 • PAHs....................................................................................................50 • Toxics................................................................................................... 50 3.2.3. Most Probable Stressors....................................................................51 • Sediment..............................................................................................51 3.3. Analysis of Candidate Stressors for Lodge Creek....................................52 3.3.1. Eliminated Stressors..........................................................................52 • Ammonia..............................................................................................52 • Metals...................................................................................................53 • pH.........................................................................................................53 • TDS/Conductivity/Sulfates....................................................................53 • Temperature.........................................................................................54 3.3.2. Possible Stressors.............................................................................54 • Nutrients...............................................................................................54 • Organic Matter......................................................................................54 • Toxics...................................................................................................55 3.3.3. Most Probable Stressors....................................................................55 • Hydrologic Modifications.......................................................................55 • Sediment..............................................................................................56 3.4. Analysis of Candidate Stressors for Meadow Creek.................................57 3.4.1. Eliminated Stressors..........................................................................57 • Ammonia..............................................................................................57 • Metals...................................................................................................58 • pH.........................................................................................................58 • TDS/Conductivity/Sulfates....................................................................58 • Temperature.........................................................................................59 3.4.2. Possible Stressors.............................................................................59 • Nutrients...............................................................................................59 • Organic Matter......................................................................................59 • PAHs....................................................................................................60 • Toxics................................................................................................... 60 3.4.3. Most Probable Stressors....................................................................61 • Hydrologic Modifications.......................................................................61 • Sediment..............................................................................................62 3.5. Analysis of Candidate Stressors for Schenks Branch...............................63 3.5.1. Eliminated Stressors..........................................................................63 • Ammonia..............................................................................................63 • Metals...................................................................................................64 • pH.........................................................................................................64 • TDS/Conductivity/Sulfates....................................................................64 • Temperature.........................................................................................65 3.5.2. Possible Stressors.............................................................................65 • Nutrients...............................................................................................65 • Organic Matter......................................................................................66 • PAHs....................................................................................................66 • Toxics...................................................................................................70 3.5.3. Most Probable Stressors....................................................................71 • Hydrologic Modifications.......................................................................71 • Sediment..............................................................................................72 3.6. Summary ..................................................................................................73 III CHAPTER 4: SETTING REFERENCE SEDIMENT LOADS...............................75 4.1. Sediment..................................................................................................75 4.1.1. Selection of Local Comparison Watersheds......................................76 CHAPTER 5. MODELING PROCESS FOR DEVELOPMENT OF THE SEDIMENT TMDLS............................................................................................80 5.1. Reassessment of the Moores Creek Impaired Stream Segment for the SedimentTMDL..............................................................................................80 5.2. Model Selection........................................................................................81 5.3. Input Data Requirements..........................................................................85 5.3.1. Climate Data......................................................................................85 5.3.2. Existing Land Use..............................................................................85 5.4. Future Land Use.......................................................................................89 5.5. GWLF Parameter Evaluation....................................................................89 5.5.1. Hydrology Parameters.......................................................................90 5.5.2. Sediment Parameters........................................................................91 5.6. Supplemental Post -Model Processing......................................................92 5.7. Representation of Sediment Sources.......................................................93 5.7.1. Surface Runoff...................................................................................93 5.7.2. Channel and Streambank Erosion.....................................................94 5.7.3. Sanitary Sewer Overflows (SSOs).....................................................94 5.7.4. Permitted Point Sources (including General Permits) ........................96 5.7.5. Industrial Stormwater.........................................................................96 5.7.6. Construction Stormwater...................................................................97 5.7.7. Municipal Stormwater........................................................................98 5.8. Accounting for Critical Conditions and Seasonal Variations ...................101 5.8.1. Selection of Representative Modeling Period..................................101 5.8.2. Critical Conditions............................................................................101 5.8.3. Seasonal Variability.........................................................................101 5.9. Existing Sediment Loads........................................................................101 CHAPTER 6: TMDL ALLOCATIONS................................................................103 6.1. Sediment TMDLs....................................................................................103 6.1.1. TMDL Components..........................................................................103 6.2. Maximum Daily Loads for Sediment.......................................................105 6.3. Allocation Scenarios...............................................................................108 CHAPTER 7: TMDLIMPLEMENTATION.........................................................113 7.1. Staged Implementation...........................................................................115 7.2. Link to ongoing Restoration Efforts.........................................................115 7.3. Reasonable Assurance for Implementation............................................117 7.3.1. TMDL Monitoring.............................................................................117 7.3.2. TMDL Modeling...............................................................................117 7.3.3. Regulatory Framework.....................................................................118 7.3.4. Implementation Funding Sources....................................................119 7.3.5. Reasonable Assurance Summary ....................................................120 CHAPTERS: PUBLICPARTICIPATIONTION .......................................................... CHAPTER 9.' REFERENCES...........................................................................126 APPENDIX A: DETAILED LAND USE DIS TRIBU TIONS ..................................130 APPENDIX B.- DETAILED SIMULATED SEDIMENT LOADS ...........................132 APPENDIX C: GWLFMODEL PARAMETERS.................................................135 iv APPENDIX D.- SETTING TMDL ENDPOINTSAND MOS USING THEALLFORX APPROACH......................................................................................................13 9 APPENDIX E. INVENTORY OF ONGOING IMPLEMENTATION IN MS4 AREAS OF THE WATERSHEDS..................................................................................147 APPENDIX F. AREA AND LOAD DISTRIBUTIONS AMONG MS4 ENTITIES .148 v List of Tables Table 2-1. RRBC/NASS Land Use Summary.....................................................11 Table 2-2. Taxa Inventory by Sample Date in Moores Creek (MSC) and Lodge Creek(XRC)................................................................................................14 Table 2-3. Taxa Inventory by Sample Date in Meadow Creek (MWC)................15 Table 2-4. Taxa Inventory by Sample Date in Schenks Branch (SNK) and an Unnamed Tributary to Schenks Branch (XSN).............................................16 Table 2-5. Virginia Stream Condition Index (VSCI) Scores for Moores Creek (MSC) and Lodge Creek (XRC)...................................................................17 Table 2-6. Virginia Stream Condition Index (VSCI) Scores for Meadow Creek (MWC).........................................................................................................18 Table 2-7. Virginia Stream Condition Index (VSCI) Scores for Schenks Branch (SNK) and an Unnamed Tributary to Schenks Branch (XSN) ......................18 Table 2-8. Habitat Evaluation Scores for Moores Creek (MSC) and Lodge Creek (XRC)........................................................................................................... 20 Table 2-9. Habitat Evaluation Scores for Meadow Creek (MWC) .......................20 Table 2-10. Habitat Evaluation Scores for Schenks Branch (SNK), and an Unnamed Tributary to Schenks Branch (XSN).............................................21 Table 2-11.Summary of Ambient Monitoring Data through October 2010...........22 Table 2-12. DEQ Channel Bottom Sediment Monitoring for Metals ...................27 Table 2-13. DEQ Water Column Monitoring for Metals......................................28 Table 2-14. Summary of Major PAH Congener Values vs Consensus -Based TECs and PECs in DEQ Monitoring (March 2009 - September 2010) .........29 Table 2-15. Indices for Determining the Type of Source and Potential for Toxicity ..................................................................................................................... 30 Table 2-16. Chlordane -Related Samples in Meadow Creek...............................31 Table 2-17. Chlordane -Related Samples in Schenks Branch .............................31 Table 2-18. RBS Analysis Results for Meadow Creek and Schenks Branch ......32 Table 2-19. Selected PReP Incidences..............................................................32 Table 2-20. Distribution of Reported Petroleum Releases by Watershed and Year ..................................................................................................................... 33 Table 2-21. Summary of Monthly Discharge Monitoring Reports from VPDES Facilities....................................................................................................... 34 Table 2-22. Industrial Stormwater Permits in Moores Creek and Meadow Creek ..................................................................................................................... 35 Table 2-23. Summary of Fish Inventory Data......................................................36 Table 2-24. 305(b) Water Quality Standard Violations - Moores Creek..............37 Table 2-25. 305(b) Water Quality Standard Violations - Lodge Creek.................37 Table 2-26. 305(b) Water Quality Standard Violations - Meadow Creek.............38 Table 2-27. 305(b) Water Quality Standard Violations - Schenks Branch ...........39 Table 2-28. Installed Agricultural BMPs from DCR Cost -Share Database .......... 39 Table 2-29. Virginia Stormwater Management Program (VSMP) Construction PermitSummary ..........................................................................................40 Table 2-30. Stream Corridor Assessment (SCA) - Summary of Potential Problems, 2005............................................................................................41 Table 2-31. Stream Corridor - Habitat Assessment, Albemarle County (2002) ...42 vi Table 3-1. VSCI Scores from ProbMon Sites in Virginia with PAH Measurements (Shaded VSCI scores greater than 60 indicate non-impairment).................68 Table 3-2. Common Types of PAHs from Pyrogenic and Petrogenic Sources as indicated by differing ranges of PAH isomer ratios, phenanthrene to anthracene (PH/AN) and fluoranthene to pyrene (FUPY) (Neff et al., 2005)69 Table 4-1. Comparison Watershed Characteristics for Urban Impaired Watersheds.................................................................................................. 77 Table 4-2.Comparison Watershed Characteristics for the Rural Impaired Watershed...................................................................................................77 Table 5-1. NASS Land Use Group Distributions for AIIForX Modeling ................86 Table 5-2. NASS/RRBC Land Use Group Distributions for TMDL Modeling ....... 86 Table 5-3. AIIForX Modeled Land Use Categories..............................................88 Table 5-4. DEQ PReP Reported Incidences of SSOs.........................................95 Table 5-5. Summary of SSO Annual Average Quantities and Sediment Loads, 07/06 - 04/11................................................................................................95 Table 5-6. Summary VPDES Current and Permitted Flows, Concentrations, and Loads........................................................................................................... 96 Table 5-7. Industrial Stormwater General Permit (ISWGP) WLA Loads .............97 Table 5-8. Summary of VSMP Permits and Disturbed Areas..............................98 Table 5-9. Land use distribution between Non -regulated and Regulated-MS4 areas..........................................................................................................100 Table 5-10. Existing Sediment Loads in the Moores and Meadow Creeks Watersheds................................................................................................102 Table 6-1. Sediment TMDLs and Components (tons/yr) for Lodge Creek, Moores Creek, Schenks Branch, and Meadow Creek............................................105 Table 6-2. "LTA to MDL multiplier" Statistics.....................................................106 Table 6-3. Maximum "Daily" Sediment Loads and Components (tons/day) for Lodge Creek, Moores Creek, Schenks Branch, and Meadow Creek ......... 107 Table 6-4. Lodge Creek: Sediment TMDL Load Allocation Scenario ................109 Table 6-5. Moores Creek: Sediment TMDL Load Allocation Scenario ..............110 Table 6-6. Meadow Creek: Sediment TMDL Load Allocation Scenario.............111 Table 6-7. Schenks Branch: Sediment TMDL Load Allocation Scenario ........... 112 Table A-1. Land Use Distributions for Simulating AIIForX Conditions in Moores Creek and Meadow Creek Watersheds.....................................................130 Table F-2. Distributed GWLF Land Use Categories used for Sediment Load Simulation..................................................................................................150 Table F-3. GWLF Distributed Sediment Loads (metric tons/yr).........................151 Table F-4. Albemarle County Regulated MS4 Land Use Areas and Sediment Loads.........................................................................................................152 Table F-5. City of Charlottesville Regulated MS4 Land Use Areas and Sediment Loads.........................................................................................................152 Table F-6.University of Virginia Regulated MS4 Land Use Areas and Sediment Loads.........................................................................................................153 vii List of Figures Figure 1-1. Location of Impaired Segments and Major Watersheds .....................2 Figure 2-1. Moores Creek, Lodge Creek, Meadow Creek, and Schenks Branch Watersheds.................................................................................................... 8 Figure 2-2. RRBC 2009 Land Use in the Moores Creek, Lodge Creek, Meadow Creek, and Schenks Branch Watersheds....................................................12 Figure 2-3. Locations of DEQ Monitoring Stations in Moores Creek, Lodge Creek, Meadow Creek, and Lodge Creek Watersheds...........................................13 Figure 2-4. VSCI Scores for Moores Creek (MSC), Lodge Creek (XRC), Meadow Creek (MWC), Schenks Branch (SNK), and Schenks Branch Unnamed Tributary(XSN) ............................................................................................19 Figure 2-5. Field Temperature............................................................................22 Figure2-6. Field pH............................................................................................22 Figure2-7. Field DO...........................................................................................23 Figure 2-8. Field Conductivity.............................................................................23 Figure 2-9. Lab Conductivity...............................................................................23 Figure2-10. Lab COD.........................................................................................23 Figure 2-11. Alkalinity.........................................................................................23 Figure2-12. Total Solids.....................................................................................23 Figure 2-13. Volatile Solids.................................................................................23 Figure 2-14. Total Suspended Solids(TSS)........................................................23 Figure 2-15. Total Chloride.................................................................................24 Figure2-16. Total Sulfate...................................................................................24 Figure 2-17. Total Dissolved Solids(TDS)..........................................................24 Figure2-18. Ammonia........................................................................................24 Figure 2-19. Total Nitrogen.................................................................................24 Figure 2-20. Total Phosphorus............................................................................24 Figure 2-21. Nitrogen - 2-MSC000.11.................................................................25 Figure 2-22. Nitrogen - 2-MSC000.60.................................................................25 Figure 2-23. Nitrogen - 2-MSC004.43................................................................25 Figure 2-24. Nitrogen - 2-MWC000.60...............................................................25 Figure 2-25. Phosphorus - 2-MSC000.11............................................................25 Figure 2-26. Phosphorus - 2-MSC000.60............................................................25 Figure 2-27. Phosphorus - 2-MWC000.60...........................................................25 Figure 2-28. 4-Day Diurnal DO Results on Meadow Creek and Schenks Branch ..................................................................................................................... 31 Figure 2-29. Reported Petroleum Releases By Year..........................................33 Figure 2-30. VPDES Facilities and DEQ Monitoring Sites..................................35 Figure 4-1. Location of Urban Impaired and Comparison Watersheds ...............78 Figure 4-2. Location of Rural Impaired and Comparison Watersheds.................79 Figure 5-1. Moores and Meadow Creeks Impaired Streams and Watersheds .... 84 Figure 5-2. Regulated MS4 Areas within the Impaired Watersheds ....................99 List of Acronyms BMP Best Management Practices BSE Biological Systems Engineering COD Chemical Oxygen Demand DCR Virginia Department of Conservation and Recreation DEQ Virginia Department of Environmental Quality DO Dissolved Oxygen E&S Erosion and Sediment Control Program (DCR) GIS Geographic Information Systems LA Load Allocation MDL Minimum Detection Limit MFBI Modified Family Biotic Index MOS Margin of Safety MS4 Municipal Separate Storm Sewer System program (EPA) NASS National Agricultural Statistics Service (USDA) NLCD National Land Cover Dataset NPS Non -Point Source NRCS Natural Resources Conservation Service (USDA) PEC Probable Effect Concentrations PReP Pollution Response Program (DEQ) RBP Rapid Bioassessment Protocol RRBC Rivanna River Basin Commission SSO Sanitary sewer overflow STP Sewage treatment plant TAC Technical Advisory Committee TDS Total Dissolved Solids TKN Total Kjeldahl Nitrogen TMDL Total Maximum Daily Load TN Total Nitrogen TP Total Phosphorous TSS Total Suspended Solids UAL Unit -area load, e.g. Ibs/acre USDA United States Department of Agriculture USEPA United States Environmental Protection Agency VSCI Virginia Stream Condition Index VDOT Virginia Department of Transportation VPDES Virginia Pollutant Discharge Elimination System VSMP Virginia Stormwater Management Program (DCR) VT Virginia Tech WIP Watershed Implementation Plan WLA Waste Load Allocation ix Executive Summary Background Section 303(d) of the Clean Water Act (CWA) and the United States Environmental Protection Agency's Water Quality Planning and Management Regulations require states to develop total maximum daily loads (TMDLs) for waterbodies that are exceeding water quality standards (WQSs). TMDLs represent the total pollutant loading a waterbody can receive without violating WQSs. Four tributaries of the Rivanna River in the County of Albemarle and the City of Charlottesville were listed as impaired on Virginia's 2012 Section 303(d) Report on Impaired Waters due to water quality violations of the general aquatic life (benthic) standard. These impaired stream segments include Moores Creek (VAV-H28R_MSC01A00), Lodge Creek (VAV-H28R_XRC01A04), Meadow Creek (VAV-H28R_MWC01A00), and Schenks Branch (VAV-H28R_SNK01A02). The impairment segment specifics are show in Table ES. 1. The watersheds of the impaired streams are shown in Figure ES.1. Table ES. 1. Impaired segments addressed in this TMDL report. Initial Impairment Impaired Segment Size 305(b) Segment ID Listing Year Type Moores Creek (VAV- 6.37 VAV-H28R MSC01A00 2008 Benthic H28R_MSC01A00) miles — Lodge Creek (VAV- 1.57 VAV-H28R XRC01A04 2006 Benthic H28R_XRC01A04) miles — Meadow Creek (VAV- 4.0 VAV- H28R_MWC01A00) miles 2006 Benthic H28R_MWC01A00 Schenks Branch (VAV- 1.13 VAV-H28R SNK01A02 2008 Benthic H28R SNK01A02) miles — This document describes the process used to identify the most probable stressor contributing to the impairment of the benthic communities and the Total Maximum Daily Loads (TMDLs) for sediment that were developed for Moores Creek, Lodge Creek, Meadow Creek, and Schenks Branch watersheds in order to address the aquatic life water quality impairments. Legend Impaired Streams Moores Creek Lodge Creek Meadow CreeK S[henk's Branch Other streams watershed _ Meadow Creek Moore's Creek 0 750 1 500 3 000 J 500 6 000 Males Figure ES. 1. Impaired segments in Moores Creek and Meadow Creek watersheds. Pollutant Sources TMDLs must be developed for a specific pollutant. Since a benthic impairment is based on a biological inventory, rather than on a physical or chemical water quality parameter, the pollutant is not explicitly identified in the assessment, as it is with physical and chemical parameters. The process outlined in USEPA's Stressor Identification Guidance Document (USEPA, 2000) was used to identify the critical stressors for each of the impaired watersheds in this study. As a result of the stressor analysis, the most probable stressor contributing to the impairment of the benthic community in Moores Creek was identified as sediment due to poor habitat metrics related to active erosion, poor vegetative cover and bank stability. In contrast, the most probable stressors for Lodge Creek were identified as hydrologic modification and sediment because of 11 the large amount of impervious surfaces in the watershed, poor riparian vegetation scores in the habitat metric, and erosion from unstable stream banks. For Meadow Creek, the most probable stressors were also identified as hydrologic modification and sediment due to the high percentage of urbanization in the watershed and the poor bank stability scores in the habitat metric. The same most probable stressors - hydrologic modification and sediment — were identified for Schenks Branch attributable to the high percentage of impervious surface area and headwater reaches being enclosed in culverts. This TMDL was written for the common stressor in all four streams, sediment, and will address all four benthic impairments. Additional information and data to support the Benthic Stressor Analysis can be found in Chapter 3 of this report. Modeling For the Moores and Meadow Creek sediment impairments, the procedure used to set TMDL sediment endpoint loads is a modification of the methodology used to address sediment impairments in Maryland's non -tidal watersheds (MDE, 2006, 2009), hereafter referred to as the "all -forest load multiplier" (AIIForX) approach. The AIIForX approach has previously been approved for use in Virginia by EPA in the Little Otter River and Buffalo Creek sediment TMDLs (Yagow et al., 2015). AIIForX is the ratio of modeled sediment loads from the same watershed: the existing condition load divided by the load from an all -forest condition. The AIIForX approach was applied locally, using the monitoring stations with impairments and a multiple selection of monitoring stations with healthy biological scores. Two separate regressions were developed between the average Virginia Stream Condition Index (VSCI) biological index scores at individual monitoring stations and the corresponding AIIForX ratio from their contributing watersheds, one for the impaired urban watersheds (Lodge Creek, Meadow Creek, and Schenks Branch) and select comparison watersheds, and a second one for the impaired rural watershed (Moores Creek) and select comparison watersheds. The value of AIIForX along the regression line, In corresponding to the VSCI impairment threshold value of 60, is the AIIForX threshold value which was used to set the TMDL. After the TMDLs were set for each watershed, the Generalized Watershed Loading Functions (GWLF) model was used to simulate sediment loads. The GWLF model is a continuous simulation model that uses daily time steps for weather data and water balance calculations. The GWLF model was run in metric units and converted to English units for this report. Endpoints AIIForX and existing load simulations were performed using GWLF without accounting for existing BMPs. After modeling on individual watersheds was completed, model output was post -processed in a Microsoft Excel TM spreadsheet to summarize the modeling results and to account for existing levels of BMPs already implemented within each watershed. The Sediment TMDLs The sediment TMDL for Moores Creek, Lodge Creek, Meadow Creek, and Schenks Branch were calculated using Equation ES.1. TMDL = WLAtotal + LA + MOS Where: [ES.1 ] WLAtota, = waste load allocation (point source contributions, including future growth); LA = load allocation (nonpoint source contributions); and MOS = margin of safety. The sediment TMDL load for these watersheds was calculated as the value of AIIForX, the point where the regression line between AIIForX and the VSCI intersected the VSCI impairment threshold (VSCI = 60), times the all -forest sediment load of the TMDL watershed. The TMDL loads and associated components are shown in Table ES. 2. For the more urban watersheds in this study, Lodge Creek, Meadow Creek, and Schenks Branch, the TMDLs were calculated as their respective All -Forest sediment loads times the point where the iv urban regression line intersected VSCI = 60 (AIIForX = 5.543). For the rural watershed (Moores Creek), the TMDL was calculated as its All -Forest load times the point where the rural regression line intersected VSCI = 60 (AIIForX = 3.762). Table ES. 2. Sediment TMDLs and Components (tons/yr) for Lodge Creek, Moores Creek, Schenks Branch, and Meadow Creek Impairment MDL WLA LA MOS Sediment Load tonsida Cause Group Code B28R-04-BEN Lodge Creek 0.55 0.126 0.37 0.05 VAV-H28R_XRC01A04 VAR040051 City of Chadottesulle VAR040074 Albemarle County VAR040073 University of Virginia 0.125 tons/day VAR040115 Virginia DOT construction aggregate WLA 0 tons/day Future Growth WLA 0.0014 tons/day Cause Group Code H28R-02-BEN Moores Creek' 26.64 2.219 22.73 1.69 VAR040051 City of Chadottesulle VAV-H28R_MSC01A00 VAR040074 Albemarle County VAR040073 University of Virginia 1.955 tons/day VAR040115 Virginia DOT VAR040108 Piedmont Virginia Community College ISWGP Permits AR051960 0.005 tons/day General Permits AG111032, VAG408447 0.007 tons/day construction aggregate WLA 0.191 tons/da Future Growth WLA 0.06 tons/da Cause Group Code H28R-05-BEN Meadow Creek' 4.90 1.239 3.19 0.47 VAR040051 City of Chadottesulle VAV-H28R_MJJC01A00 VAR040074 Albemarle County VAR040073 University of Virginia 1213 tons/day VAR040115 Virginia DOT ISWGP Permits (VAR051372, VAR050974) AR050876 0.004 tons/day construction aggregate WLA 0.008 tons/day Future Growth WLA 0.014 tons/day Cause Group Code H28R-07-BEN Schenks Branch 1.57 0.368 1.05 0.15 VAR040051 City of ChadottesmIle VAV-H28R_SNK01A02 VAR040074 Albemarle County VAR040073 University of Virginia 0.347 tons/day VAR040115 Virginia DOT General Permits (VAG110064) 0.008 tons/day construction aggregate WLA 0.009 tons/day Future Growth WLA 0.004 tons/day ' Moores Creek excludes Lodge Creek; Meadow Creek excludes Schenks Branch. Margin of Safety To allocate loads while protecting the aquatic environment, a margin of safety needs to be considered. For the more urban watersheds in this study, Lodge Creek, Meadow Creek, and Schenks Branch, the margin of safety was calculated as AIIForX urban intersection point VSCI = 60 (AIIForX = 5.543) and the lower bound of the 80% confidence interval (AIIForX = 5.01), amounting to v 9.5%. Note that the margin of safety is equal to this difference expressed as a percentage of the AIIForX threshold, and therefore is the same for all urban watersheds using this regression. For the rural watershed, Moores Creek, the margin of safety was calculated as its All -Forest sediment load times the difference in AIIForX between the point where the regression intersected VSCI = 60 (AIIForX = 3.762) and the lower bound of the 80% confidence interval (AIIForX = 3.52). The margin of safety for Moores Creek was 6.3%. Allocation Scenarios The target sediment load for each allocation scenario is the TMDL minus the MOS and 1% of the TMDL allocated as a Future Growth WLA. Several allocation scenarios were created for each watershed. In each scenario, SSOs were to be eliminated and Forest and Permitted WLAs were not subjected to reductions. Areas of harvested forest and construction are transient sources of sediment subject to existing regulations. Their reduction efficiencies were currently estimated as only half of those possible. Both allocation scenarios assumed that these practices would meet their potential reduction efficiencies with better enforcement of existing regulations. The allocation scenario selected by the local Technical Advisory Committee used equal percent reductions from all other sources. The selected allocation scenarios are detailed in Table 6-4 through 6-7 for Lodge Creek, Moores Creek, Meadow Creek, and Schenks Branch, respectively. The resulting loads for all land uses within Regulated MS4 areas comprised the WLA for the aggregated MS4 areas within each watershed. vi Table ES.3. Sediment TMDL load allocation scenarios for Moores Creek. Existing Load Reduction Land Use/ Source Group Area Sediment Allocation Scenario from §319 (acres) Load % Load Reduction I Allocated Load I I (tons/yr) Reduction I Needed(tonstyr) (tons/yr) mpementatlon Non -Regulated Areas Row Crops 86.1 74.1 14.2% 10.5 63.6 Pasture 200.0 128.4 14.2% 18.2 110.2 65.9 Hay 710.9 193.2 14.2% 27.4 165.8 Forest 11,933.6 373.9 373.9 Harvested Forest 120.5 30.5 42.9% 13.1 17.41 Imoervious developed 440.2 140.5 14.2% 19.9 120.6 Channel Erosions i 163.01 14.2%1 2331 139.91 Non-MS4 Permitted WL,S' -4.1 4.1 11 R ulated-MS4 Sub•Totals 835.5 14.6% 121.7 713.8 Future Growth -21.9 21.9 Total Loads 2,318.9 11.7% 271.7 2,047.2 " Non-MS4 Permitted WLA includes individual VPDES, ISWGP, and other general permited loads. The Allocation Scenario Load for Transitional Land Use equals the construction WLA LA components= 1,237.6 WLA components 809.6 TMDL - MOS = 2,047.2 vll Table ES.4. Sediment TMDL load allocation scenarios for Lodge Creek. Land Use/ Source Group Area (acres) Existing Sediment Load (tons/yr) Allocation Scenario o/u Reduction Load Reduction Needed (tonstyr) Allocated Load (tonstyr) Non -Regulated Areas Forest 2.64 0.056 0.056 Harvested Forest 0.03 0.0043 42.9% 0.0018 0.0024 Impervious developed 0.88 0.273 52.2% 0.142 0.131 Pervious developed 4.62 0.663 52.2% 0.346 0.317 Transitional"* 0.06 0.238 25.0% 0.059 0.178 Channel Erosion 0.011 52.2% 0.006 0.005 Non-MS4 Permitted WLA** 0.000 SSOs 1 0.00141 100.0%1 0.001 0.000 Non -Regulated Sub -Totals 1.25 44.7% 0.56 0.69 Regulated-MS4 Areas Forest 50.04 1.06 1.06 Impervious developed 156.81 48.60 52.2% 25.35 23.25 Pervious developed 252.66 36.24 52.2% 18.91 17.34 Transitional"* 1.12 4.80 25.0% 1.20 3.60 Channel Erosion 0.64 52.2% 0.34 0.31 R ulated-MS4 Sub -Totals 91.3 50.1% 45.8 45.6 Future Growth -0.5 0.5 Total Loads 92.6 49.5% 45.8 46.8 ** Non-MS4 Permitted WLA includes individual VPDES, ISWGP, and other general permited loads. The Allocation Scenario Load for Transitional Land Use equals the construction WLA LA components = 0.5 WLA components = 46.2 TMDL - MOS = 46.8 viii Table ES.5. Sediment TMDL load allocation scenarios for Meadow Creek. Land Use/ Source Group Area (acres) Existing Sediment Load (tons/yr) Allocation Scenario % Reduction Load Reduction Needed (tons/yr) Allocated Load (tons/yr) Non -Regulated Areas Forest 74.0 2.2 2.2 Harvested Forest 0.7 0.17 42.9% 0.07 0.10 Impervious developed 27.5 9.8 52.7% 5.2 4.7 Pervious developed 84.6 11.5 52.7% 6.0 5.4 Transitional*** 1.2 4.0 25.0% 1.0 2.99 Channel Erosion 2.2 52.7% 1.1 1.0 Non-MS4 Permitted WLA** -1.6 1.6 SSOSI I 0.0002 100.0% 0.0002 0.0 Non -Regulated Sub -Totals 29.8 39.8% 11.9 18.0 Regulated-MS4 Areas Hay 35.81 14.4 52.7% 7.6 6.8 Forest 598.09 17.7 17.7 Impervious developed 1,337.67 478.4 52.7% 253.5 225.0 Pervious developed 2,249.84 304.7 52.7% 160.5 144.2 Transitional*** 9.96 34.3 25.0% 8.6 25.7 Channel Erosion 49.0 52.7% 25.8 23.2 R ulated-MS4 Sub -Totals 898.5 50.7•0 455.9 442.6 Future Growth -5.1 5.1 Total Loads 928.4 49.8% 462.6 465.7 ** Non-MS4 Permitted WLA includes individual VPDES, ISWGP, and other general permited loads. *** The Allocation Scenario Load for Transitional Land Use equals the construction WLA LA components = 13.4 WLA components = 452.3 TMDL - MOS = 465.7 ix Table ES.6. Sediment TMDL load allocation scenarios for Schenks Branch. Land Use/ Source Group Area (acres) Existing Sediment Load (tons/yr) Allocation Scenario % Reduction Load Reduction Needed (tons/yr) JPJlocated Load (tons/yr) Non -Regulated Areas Forest 5.1 0.1 0.1 Harvested Forest 0.1 0.01 42.9% 0.00 0.01 Impervious developed 22.9 7.8 57.1% 4.5 3.4 Pervious developed 75.7 10.9 57.1% 6.2 4.7 Transitional"' 1.0 4.3 25.0% 1.1 3.2 Channel Erosion 0.2 57.1% 0.1 0.1 Non-MS4 Permitted WLX* -3.0 1 3.0 SSOSI 1 0.00011 100.0%1 0.0001 1 0.0 Non -Regulated Sub -Totals 23.4 38.1% 8.9 14.5 Regulated-MS4 Areas Forest 44.48 1.3 1.3 Impervious developed 475.54 162.4 57.1% 95.7 66.8 Pervious developed 770.51 110.7 57.1% 63.2 47.5 Transitional"' 3.07 13.3 25.0% 3.3 10.0 Channel Erosion 2.6 57.1% 1.5 1.1 Re ulated-MS4 Sub -Totals 290.4 56.4% 163.6 126.7 Future Growth I I 1 1 -1.6 1 1.6 Total Loads 1 1 313.8 1 54.5% 1 171.0 1 142.8 " Non-MS4 Permitted WLA includes individual VPDES, ISWGP, and other general permited loads. The Allocation Scenario Load for Transitional Land Use equals the construction WLA. LA components = 8.3 WLA components = 134.5 TMDL - MOS = 142.8 Future Implementation The goal of the TMDL program is to establish a three -step path that will lead to attainment of water quality standards. The first step in the process is to develop TMDLs that will result in attainment of water quality standards. This report represents the culmination of that effort for the benthic impairments on Lodge Creek, Moores Creek, Schenks Branch, and Meadow Creek. The second step is to develop a TMDL implementation plan. The final step is to implement the TMDL implementation plan and to monitor stream water quality to determine if water quality standards are being attained. x As an alternative to a TMDL implementation plan, watershed plans have also been utilized to identify the actions needed to restore water quality in an impaired waterbody. Typically, the Commonwealth has developed theses plans in instances wherein a stream is impaired, the sources of pollution are well understood, and a TMDL has not been developed. However, their application may be more far reaching. A watershed plan could be appropriate in circumstances such as those present in Lodge Creek, Moores Creek, Schenks Branch, and Meadow Creek, where numerous local and regional planning efforts are currently underway to address regulatory requirements for MS4 permits. In such instances, a watershed plan could be utilized as a broader, more generalized tool to weave together existing plans with additional non -regulatory non -point source pollution controls. Watershed stakeholders will have opportunities to provide input and to participate in the development of the implementation or watershed plan, which will also be supported by regional and local offices of VADEQ and other cooperating agencies. Public Participation Public participation was elicited at every stage of the TMDL development in order to receive inputs from stakeholders and to apprise the stakeholders of the progress made. Technical Advisory Committee (TAC) meetings and public meetings were organized for this purpose. During the original timeframe of this project, a total of two public meetings and five TAC meetings took place from January 2011 until February 2012. Since the original TMDL was rejected by EPA, another series of meetings was held during the current revision phase to re -open the TMDL starting in June 2014 in order to address EPA comments and to re -submit the TMDL. A series of six TAC meetings took place until the project was culminated at a public meeting held on June16, 2015. Reasonable Assurance Through the public participation process, follow-up monitoring, current implementation actions for the Moores Creek Bacteria IP, the respective Xi jurisdictional TMDL Action Plans in MS4 areas, as well as ongoing efforts to reduce sediment to the Chesapeake Bay, such as the MS4s' Chesapeake Bay TMDL Action plans, there is reasonable assurance that the Lodge Creek, Moores Creek, Schenks Branch, and Meadow Creek sediment TMDLs will be implemented and water quality will be restored. xii Section 8. Qualified personnel The following personnel are responsible for inspections; (Provide the name, telephone number, and qualifications of the qualified personnel conducting inspections.) Mr. Andrew Vinisky 967 2"d Street SE Charlottesville, VA 22902 434.293.9066 Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 9. Signed Certification (Provide certification according to 9VAC25-870-370. For purposes of plan review and approvals, this certification should be the owner of the property, the same signature as appears on the bonds and applications. Another operator can be designated on the delegation of authority form to follow.) CERTIFICATION "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate 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." Owner/Operator Name: Mr. Andrew Vinisk Company: Habitat for Humanity of Greater Charlottesville Title: C.. -f Construction Officer Signature:_ Date: 12/3/2021 Mr. Andrew Vinisky 967 2"a St SE Charlottesville, VA 22902 434.293.9066 Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 10. Delegation of authority. (Provide the persons or positions with authority to sign inspection reports or to modify the stormwater pollution prevention plan. A formal, signed delegation of authority is needed.) Delegation of Authority I, (name), hereby designate the person or specifically described position below to be a duly authorized representative for the purpose of overseeing compliance with environmental requirements, including the Construction General Permit, at the construction site. The designee is authorized to sign any reports, stormwater pollution prevention plans and all other documents required by the permit. (name of person or position) (company) (address) (city, state, zip) (phone) By signing this authorization, I confirm that I meet the requirements to make such a designation as set forth in the Construction General Permit (CGP), and that the designee above meets the definition of a "duly authorized representative". Operator Name: Mr. Andrew Viniskv Company: Habitat for Humanity of Greater Charlottesville Title: Signature: Date: Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 11. General permit copy (Provide a copy of the construction general permit, 9VAC25-880) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County COMMONWEALTH of VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY General Permit No.: VAR10 Effective Date: July 1, 2019 Expiration Date: June 30, 2024 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 the registration statement filed with the Department of Environmental Quality, this cover page, Part I - Discharge Authorization and Special Conditions, Part II - Stormwater Pollution Prevention Plan, and Part III - Conditions Applicable to All VPDES Permits as set forth in this general permit. Construction General Permit Effective July 1, 2019 Page 2 of 26 10M.T 1 DISCHARGE AUTHORIZATION AND SPECIAL CONDITIONS A. Coverage under this general permit. 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. 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. 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. 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. Page 3 of 26 4. Impaired waters and total maximum daily load (TMDL) limitation. Nutrient and sediment impaired waters. Discharges of stormwater from construction activities to surface waters identified as impaired in the 2016 § 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 stormwater pollution prevention plan (SWPPP) in accordance with Part II B 5 of this permit that minimizes the pollutants of concern and, when applicable, is consistent with the assumptions and requirements of the approved TMDL wasteload allocations and implements an inspection frequency consistent with Part II G 2 a. Polychlorinated biphenyl (PCB) impaired waters. Discharges of stormwater from construction activities that include the demolition of any structure with at least 10,000 square feet of floor space built or renovated before January 1, 1980, to surface waters identified as impaired in the 2016 § 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 PCB are not eligible for coverage under this general permit unless the operator develops, implements, and maintains a SWPPP in accordance with Part II B 6 of this permit that minimizes the pollutants of concern and, when applicable, is consistent with the assumptions and requirements of the approved TMDL wasteload allocations, and implements an inspection frequency consistent with Part II G 2 a. Exceptional waters limitation. Discharges of stormwater from construction activities not previously covered under the general permit effective on July 1, 2014, to exceptional waters identified in 9VAC25-260-30 A 3 c are not eligible for coverage under this general permit unless the operator develops, implements, and maintains a SWPPP in accordance with Part II B 7 of this permit and implements an inspection frequency consistent with Part II G 2 a. 6. There shall be no discharge of floating solids or visible foam in other than trace amounts C. Commingled discharges. Discharges authorized by this general permit may be commingled with other sources of stormwater that are not required to be covered under a state permit, so long as the commingled discharge is in compliance with this general permit. Discharges authorized by a separate state or VPDES permit may be commingled with discharges authorized by this general permit so long as all such discharges comply with all applicable state and VPDES permit requirements. D. Prohibition of nonstormwater discharges. Except as provided in Parts I A 2, 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; Page 4 of 26 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, managed in a manner to avoid an instream impact; 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, unless a registration statement was not required to be submitted in accordance with 9VAC25-880-50 A 1 c or A 2 b for single-family detached residential structures, to the VSMP authority after one or more of the following conditions have been met: Page 5 of 26 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 has operational control. When applicable, long term responsibility and maintenance requirements for permanent control measures shall be recorded in the local land records prior to the submission of a complete and accurate notice of termination and the construction record drawing prepared; b. Another operator has assumed control over all areas of the site that have not been finally stabilized and obtained coverage for the ongoing discharge; c. Coverage under an alternative VPDES or state permit has been obtained; or d. For individual lots in residential construction only, final stabilization as defined in 9VAC25- 880-1 has been completed, including providing written notification to the homeowner and incorporating a copy of the notification and signed certification statement into the SWPPP, and the residence has been transferred to the homeowner. The notice of termination shall be submitted no later than 30 days after one of the above conditions in subdivision 1 of this subsection is met. 3. Termination of authorization 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 a complete and accurate notice of termination in accordance with 9VAC25-880-60 C, whichever occurs first. 4. 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 unless otherwise notified by the VSMP authority or department. 5. The notice of termination shall be signed in accordance with Part III K of this general permit. G. Water quality protection. 1. The operator shall 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. 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 C 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 Page 6 of 26 c. Submit an individual permit application in accordance with 9VAC25-870-410 B 3. All written responses required under this chapter shall include a signed certification consistent with Part III K. STORMWATER POLLUTION PREVENTION PLAN A. Stormwater pollution prevent 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 B. 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 shall develop the missing elements and include them in the SWPPP. 3. Any operator that was authorized to discharge under the general permit effective July 1, 2014, 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. B. 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: Page 7 of 26 (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; (5) Locations where concentrated stormwater is discharged; (6) Locations of any support activities, including (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 as allowed by Part II G 2 a (1) (ii) or Part II G 2 b (2). Erosion and sediment control plan. a. An erosion and sediment control plan designed and approved in accordance with the Virginia 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. b. All erosion and sediment control plans shall include a statement describing the maintenance responsibilities required for the erosion and sediment controls used. c. An 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, implemented to: (1) Control the volume and velocity of stormwater runoff within the site to minimize soil erosion; (2) Control stormwater discharges, including peak flow rates and total stormwater volume, to minimize erosion at outlets and to minimize downstream channel and stream bank erosion; Page 8 of 26 (3) Minimize the amount of soil exposed during the construction activity; (4) Minimize the disturbance of steep slopes; (5) Minimize 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) Provide and maintain natural buffers around surface waters, direct stormwater to vegetated areas to increase sediment removal, and maximize stormwater infiltration, unless infeasible; (7) Minimize soil compaction and, unless infeasible, preserve topsoil; (8) Ensure initiation of stabilization activities, as defined in 9VAC25-880-1, of disturbed areas immediately whenever any clearing, grading, excavating, or other land - disturbing activities have permanently ceased on any portion of the site, or temporarily ceased on any portion of the site and will not resume for a period exceeding 14 days; and (9) 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. 3. Stormwater management plan. a. Except for those projects identified in Part II B 3 b, 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. b. For any operator meeting the conditions of 9VAC25-870-47 B of the VSMP regulation, an approved stormwater management plan is not required. In lieu of an approved stormwater management plan, 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. 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; Page 9 of 26 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); (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 Page 10 of 26 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, waste concrete, and sanitary wastes; (8) Address any other discharge from the potential pollutant -generating activities not addressed above; (9) Minimize the exposure of waste materials to precipitation by closing or covering waste containers during precipitation events and at the end of the business day, or implementing other similarly effective practices. Minimization of exposure is not required in cases where the exposure to precipitation will not result in a discharge of pollutants; 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. SWPPP requirements for discharges to nutrient and sediment impaired waters. For discharges to surface waters (i) identified as impaired in the 2016 § 305(b)/303(d) Water Quality Assessment Integrated Report or (ii) with an applicable TMDL wasteload allocation established and approved prior to the term of this general permit for sediment for a sediment - related parameter (i.e., total suspended solids or turbidity) or nutrients (i.e., nitrogen or phosphorus), the operator shall: a. Identify the impaired waters, approved TMDLs, and pollutants of concern in the SWPPP; and b. Provide clear direction in the SWPPP 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 II G 2 a. SWPPP requirements for discharges to polychlorinated biphenyl (PCB) impaired waters. For discharges from construction activities that include the demolition of any structure with at least 10,000 square feet of floor space built or renovated before January 1, 1980, to surface waters (i) identified as impaired in the 2016 § 305(b)/303(d) Water Quality Assessment Integrated Report or (ii) with an applicable TMDL wasteload allocation established and approved prior to the term of this general permit for PCB, the operator shall: Page 11 of 26 a. Identify the impaired waters, approved TMDLs, and pollutant of concern in the SWPPP; b. Implement the approved erosion and sediment control plan in accordance with Part II B 2; c. Dispose of waste materials in compliance with applicable state, federal, and local requirements; and d. Implement a modified inspection schedule in accordance with Part II G 2 a. 7. SWPPP requirements for discharges to exceptional waters. For discharges to surface waters identified in 9VAC25-260-30 A 3 c as an exceptional water, the operator shall: a. Identify the exceptional surface waters in the SWPPP; and b. Provide clear direction in the SWPPP 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 II G 2 a. 8. Identification of qualified personnel. The name, phone number, and qualifications of the qualified personnel conducting inspections required by this general permit. 9. Delegation of authority. The individuals or positions with delegated authority, in accordance with Part III K, to sign inspection reports or modify the SWPPP. 10. SWPPP signature. The SWPPP shall be signed and dated in accordance with Part III K. C. 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. The SWPPP shall 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 shall be accomplished as described in Part II H. Page 12 of 26 3. The SWPPP shall clearly identify the contractors 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 as soon as possible but 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 were modified; 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 II G. 5. Amendments, modifications, or updates to the SWPPP shall be signed in accordance with Part III K. D. 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. E. 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. Page 13 of 26 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 shall be posted near the main entrance of the construction site. 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 D. 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. F. 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. All control measures shall 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 G identifies a control measure that is not operating effectively, corrective actions 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. If site inspections required by Part II G identify an existing control measure that needs to be modified or if an additional or alternative 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 additional or 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. G. 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 ensuring that the qualified personnel conduct the inspection. 2. Inspection schedule. a. For construction activities that discharge to a surface water identified in Part 11 B 5 and B 6 as impaired or having an approved TMDL or Part I B 7 as exceptional, the following inspection schedule requirements apply: (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 24 hours following a measurable storm event. In the event that a measurable storm event occurs when Page 14 of 26 there are more than 24 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections as authorized in Part II G 2 d shall not be allowed. b. Except as specified in Part II G 2 a, inspections shall be conducted at a frequency of: (1) At least once every five business days; or (2) At least once every 10 business days and no later than 24 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 24 hours between business days, the inspection shall be conducted on the next business day. c. 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 described in Part II G 2 a and 2 b 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. d. Except as prohibited in Part II G 2 a (2), 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 inspection report required by Part II G. e. If adverse weather causes the safety of the inspection personnel to be in jeopardy, the inspection may be delayed until the next business day on which it is safe to perform the inspection. Any time inspections are delayed due to adverse weather conditions, evidence of the adverse weather conditions shall be included in the SWPPP with the dates of occurrence. 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; Page 15 of 26 (2) Record the information and a description of any discharges occurring at the time of the inspection or evidence of discharges occurring prior to 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 and effective impoundment or flow control; (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 channels, flumes, 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 or public roads for minimizing sediment tracking; (5) Inspect areas that have reached final grade or that will remain dormant for more than 14 days to ensure: (a) Initiation of stabilization activities have occurred immediately, as defined in 9VAC25-880-1; and (b) Stabilization activities have been completed within seven days of reaching grade or stopping work; (6) 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: Page 16 of 26 (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 sediment 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 or is not effective 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 or sediment deposition outside of the approved area to be disturbed; (7) Inspect pollutant generating activities identified in the pollution prevention plan for the proper implementation, maintenance, and effectiveness of the procedures and practices; (8) Identify any pollutant generating activities not identified in the pollution prevention plan; and (9) 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 locations of prohibited discharges; d. The locations of control measures that require maintenance; Page 17 of 26 e. The locations of control measures that failed to operate as designed or proved inadequate or inappropriate for a particular location; f. The locations where any evidence identified under Part II G 3 a (6) exists; g. The locations where any additional control measure is needed; 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 The date and signature of the qualified personnel and the operator or its duly authorized representative. 5. The inspection report shall be included into the SWPPP no later than four business days after the inspection is complete. The inspection report and any actions taken in accordance with Part II shall 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. H. Corrective actions. The operator shall implement the corrective actions 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. 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. Page 18 of 26 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 shall 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. 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 individuals who performed the sampling or measurements; c. The dates and times analyses were performed; d. The individuals 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. Page 19 of 26 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. 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 terminating this general permit coverage 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; Page 20 of 26 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 Any steps planned or taken to reduce, eliminate and prevent a recurrence of the present discharge or any future discharges not authorized by this general permit. Discharges reportable to the department and the VSMP authority under the immediate reporting requirements of other regulations are exempted from this requirement. H. Reports of unusual or extraordinary discharges. If any unusual or extraordinary discharge including a "bypass" or "upset," as defined in this general permit, should occur from a facility and the discharge enters or could be expected to enter surface waters, the operator shall promptly notify, in no case later than within 24 hours, the department and the VSMP authority by telephone after the discovery of the discharge. This notification shall provide all available details of the incident, including any adverse effects on aquatic life and the known number of fish killed. The operator shall reduce the report to writing and shall submit it to the department and the VSMP authority within five days of discovery of the discharge in accordance with Part III 12. Unusual and extraordinary discharges include 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. 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; Page 21 of 26 b. The period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and c. Steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. The department may waive the written report on a case -by -case basis for reports of noncompliance under Part III I if the oral report has been received within 24 hours and no adverse impact on surface waters has been reported. 3. The operator shall report all instances of noncompliance not reported under Part III 1 1 or 2 in writing as part of the SWPPP. The reports shall contain the information listed in Part 111 1 2. NOTE: The reports required in Part III G, H and I shall be made to the department and the VSMP authority. Reports may be made by telephone, email, or by fax. For reports outside normal working hours, leaving a recorded message shall fulfill the immediate reporting requirement. For emergencies, the Virginia Department of Emergency Management maintains a 24-hour telephone service at 1-800-468-8892. 4. Where the operator becomes aware of a failure to submit any relevant facts, or submittal of incorrect information in any report, including a registration statement, to the department or the VSMP authority, the operator shall promptly submit such facts or correct information. J. Notice of planned changes. 1. The operator shall give notice to the department and the VSMP authority as soon as possible of any planned physical alterations or additions to the permitted facility or activity. Notice is required only when: a. The operator plans an alteration or addition to any building, structure, facility, or installation that may meet one of the criteria for determining whether a facility is a new source in 9VAC25-870-420; b. The operator plans an alteration or addition that would significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants that are not subject to effluent limitations in this general permit; or 2. The operator shall give advance notice to the department and VSMP authority of any planned changes in the permitted facility or activity, which may result in noncompliance with state permit requirements. K. Signatory requirements. 1. Registration statement. All registration statements shall be signed as follows: a. For a corporation: by a responsible corporate officer. For the purpose of this chapter, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation; or (ii) the manager of one or more manufacturing, production, or operating facilities, provided the Page 22 of 26 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 and other information. All reports required by this general permit, including SWPPPs, and other information requested by the board or the department shall be signed by a person described in Part III K 1 or by a duly authorized representative of that person. A person is a duly authorized representative only if: a. The authorization is made in writing by a person described in Part III K 1; b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the operator. (A duly authorized representative may thus be either a named individual or any individual occupying a named position); and c. The signed and dated written authorization is included in the SWPPP. A copy shall 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 Page 23 of 26 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 coverage, 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 60 days before the expiration date of the existing general permit, unless permission for a later date has been granted by the board. The board shall not grant permission for registration statements to be submitted later than the expiration date of the existing general permit. N. Effect of a state permit. This general permit does not convey any property rights in either real or personal property or any exclusive privileges, nor does it authorize any injury to private property or invasion of personal rights, or any infringement of federal, state or local law or regulations. O. State law. Nothing in this general permit shall be construed to preclude the institution of any legal action under, or relieve the operator from any responsibilities, liabilities, or penalties established pursuant to any other state law or regulation or under authority preserved by § 510 of the Clean Water Act. Except as provided in general permit conditions on "bypassing" (Part III U) and "upset' (Part III V), nothing in this general permit shall be construed to relieve the operator from civil and criminal penalties for noncompliance. P. Oil and hazardous substance liability. Nothing in this general permit shall be construed to preclude the institution of any legal action or relieve the operator from any responsibilities, liabilities, or penalties to which the operator is or may be subject under §§ 62.1-44.34:14 through 62.1-44.34:23 of the State Water Control Law or § 311 of the Clean Water Act. Q. Proper operation and maintenance. The operator shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances), which are installed or used by the operator to achieve compliance with the conditions of this general permit. Proper operation and maintenance also includes effective plant performance, adequate funding, adequate staffing, and adequate laboratory and process controls, including appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems, which are installed by the operator only when the operation is necessary to achieve compliance with the conditions of this general permit. R. Disposal of solids or sludges. Solids, sludges or other pollutants removed in the course of treatment or management of pollutants shall be disposed of in a manner so as to prevent any pollutant from such materials from entering surface waters and in compliance with all applicable state and federal laws and regulations. Page 24 of 26 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. 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. Page 25 of 26 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 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 shall be kept under the conditions of this general permit; 2. Have access to and copy, at reasonable times, any records that shall 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. Page 26 of 26 For purposes of this section, the time for inspection shall be deemed reasonable during regular business hours, and whenever the facility is discharging. Nothing contained herein shall make an inspection unreasonable during an emergency. X. State permit actions. State permit coverage 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 permit coverage. 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. 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. Section 12. Inspection logs INSPECTION FREQUENCY: (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. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County STORM WATER INSPECTIONS FOR VSMP GENERAL PERMIT LAND DISTRIBUTING ACTIVITIES Page I PROJECT: MONITORING FOR THE WEEK BEGINNING: DATE AND TIME OF INSPECTION: RAINFALL: Date of Rain Amount Inches Initials EROSION AND SEDIMENT CONTROL FACILITIES INSPECTED: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) Facility Identification Date and Time of Inspection Operating Properly (YIN) Description of inspection observations OBSERVATION OF RUNOFF AT OUTFALLS: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) By this signature, I certify that this report is accurate and complete to the best of my knowledge: Qualified Personnel By this signature, I certify that the contruction activity is in compliance with the SW PP and general permit. Qualified Personnel ceritication statement on page 3 shall be signed. By this signature, I certify that this report is accurate and complete to the best of my knowledge: Operator/Duly Authorized Representative By this signature, I certify that the contruction activity is in compliance with the SWPP and general permit. Operator/Duly Authorized Representative Stormwater Discharge Outfall Identification Date Clarity Floating Solids Suspended Solids Oil Sheen Otherobvious indicators of stormwater pollution (list and describe) Visible sediment leavingthe site?(Y/N) If yes, describe actions taken to prevent future releases (may need to attach additional information) Describemeasurestakento clean up sediment outside of disturbed limits (may need to attach additional information) Clarity: Choose the number which best describes the clarity of the discharge where I is clear and 10 is very cloudy Floating Solids: Choose the number which best describes the amount of floating solids in the discharge where 1 is no solids and 10 the surface us covered in floating solids Suspended Solids: Choose the number which best describes the amount of suspended solids in the discharge where 1 is no solids and 10 is extremely muddy. Oil Sheen: Is there an oil sheen in the stormwater discharge (Y or N)? STORM WATER INSPECTIONS FOR VSMP GENERAL PERMIT LAND DISTRIBUTING ACTIVITIES Page I PROJECT: MONITORING FOR THE WEEK BEGINNING: DATE AND TIME OF INSPECTION: RAINFALL: Date of Rain Amount Inches Initials EROSION AND SEDIMENT CONTROL FACILITIES INSPECTED: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) Facility Identification Date and Time of Inspection Operating Properly (YIN) Description of inspection observations OBSERVATION OF RUNOFF AT OUTFALLS: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) By this signature, I certify that this report is accurate and complete to the best of my knowledge: Qualified Personnel By this signature, I certify that the contruction activity is in compliance with the SW PP and general permit. Qualified Personnel ceritication statement on page 3 shall be signed. By this signature, I certify that this report is accurate and complete to the best of my knowledge: Operator/Duly Authorized Representative By this signature, I certify that the contruction activity is in compliance with the SWPP and general permit. Operator/Duly Authorized Representative Stormwater Discharge Outfall Identification Date Clarity Floating Solids Suspended Solids Oil Sheen Otherobvious indicators of stormwater pollution (list and describe) Visible sediment leavingthe site?(Y/N) If yes, describe actions taken to prevent future releases (may need to attach additional information) Describemeasurestakento clean up sediment outside of disturbed limits (may need to attach additional information) Clarity: Choose the number which best describes the clarity of the discharge where I is clear and 10 is very cloudy Floating Solids: Choose the number which best describes the amount of floating solids in the discharge where 1 is no solids and 10 the surface us covered in floating solids Suspended Solids: Choose the number which best describes the amount of suspended solids in the discharge where 1 is no solids and 10 is extremely muddy. Oil Sheen: Is there an oil sheen in the stormwater discharge (Y or N)? STORM WATER INSPECTIONS FOR VSMP GENERAL PERMIT LAND DISTRIBUTING ACTIVITIES Page I PROJECT: MONITORING FOR THE WEEK BEGINNING: DATE AND TIME OF INSPECTION: RAINFALL: Date of Rain Amount Inches Initials EROSION AND SEDIMENT CONTROL FACILITIES INSPECTED: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) Facility Identification Date and Time of Inspection Operating Properly (YIN) Description of inspection observations OBSERVATION OF RUNOFF AT OUTFALLS: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part IB4d.) By this signature, I certify that this report is accurate and complete to the best of my knowledge: Qualified Personnel By this signature, I certify that the contruction activity is in compliance with the SW PP and general permit. Qualified Personnel ceritication statement on page 3 shall be signed. By this signature, I certify that this report is accurate and complete to the best of my knowledge: Operator/Duly Authorized Representative By this signature, I certify that the contruction activity is in compliance with the SWPP and general permit. Operator/Duly Authorized Representative Stormwater Discharge Outfall Identification Date Clarity Floating Solids Suspended Solids Oil Sheen Otherobvious indicators of stormwater pollution (list and describe) Visible sediment leavingthe site?(Y/N) If yes, describe actions taken to prevent future releases (may need to attach additional information) Describemeasurestakento clean up sediment outside of disturbed limits (may need to attach additional information) Clarity: Choose the number which best describes the clarity of the discharge where I is clear and 10 is very cloudy Floating Solids: Choose the number which best describes the amount of floating solids in the discharge where 1 is no solids and 10 the surface us covered in floating solids Suspended Solids: Choose the number which best describes the amount of suspended solids in the discharge where 1 is no solids and 10 is extremely muddy. Oil Sheen: Is there an oil sheen in the stormwater discharge (Y or N)?