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WPO202100046 VSMP - SWPPP 2022-08-19
of A COUNTY OF ALBEMARLE Department of Community Development 401 McIntire Road, North Wing 1 Charlottesville, Virginia 22902-4596 Tel. (434) 296-5832 • Fax (434) 972-4126 �IRGiN1P Stormwater Pollution Prevention Plan (SWPPP) For Construction Activities At: Project Name: Barnes Lumber Address: The Square, Library Avenue, & High Street, Crozet, VA 22932 Prepared by: Timmons Group 608 Preston Avenue, Suite 200 Charlottesville, VA 22903 434.295.8317 Prepared for: Milestone Partners 300 2"d St. NE Charlottesville, VA 22902 Contact: Mr. Frank Stoner 434-245-5804 SWPPP Preparation Date: September 1, 2020 Revised August 18, 2022 (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. 17-405) 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 FOR OFFICE USE ONLY GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM ID Number: CONSTRUCTION ACTIVITIES (VAR10) Technical Criteria: 11110 IIC ❑ REGISTRATION STATEMENT 2019 NEW ISSUANCE ® RE -ISSUANCE ❑ MODIFICATION WITH ACREAGE INCREASE ❑ Existing Permit Coverage Number (if applicable, Section I. Operator/Permittee Information. MODIFICATION WITHOUT ACREAGE INCREASE 71 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 VI. (per Part III. K. of the VAR10 Permit). Construction Activity Albemarle County Operator Name: Contact person: Michael Stumbaugh Address: 401 McIntire Road City, State, Zip code: Charlottesville, VA 22902 Phone Number: 434-906-4459 Primary Email: mstumbaugh@albemarle.org CC Email: B. Billing Information (leave blank if same as the Operator identified in Section I. A. above). This entity will receive Annual Permit Maintenance and Permit Modification Fee invoices (if applicable). Name: Contact Person: Address: City, State Zip Code: Phone Number: Primary Email: CC Email: C. May we transmit correspondence electronically? You must choose YES and include a valid email in order to pay by credit card and to receive your permit coverage approval letter via email: YES ® NO ❑ Rev 04/2019 PAGE 1 1 7 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 Section II. Construction Activity Location Information. Project site 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 water bodies receiving stormwater discharges from the site. B. Construction Activity Name: Barnes Lumber Address: The Square, High Street, and Library Avenue City and/or County and Zip Code: Crozet, VA 22932 Latitude and Longitude (6-digit, decimal degrees format): 38.0692,-78.7001 C. Construction Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): 38.0682,-78.7004 (end of Library Ave.) Section III. Offsite Support Activity Location Information. List all offsite support activities to be included under this permit registration. Enter additional areas on a separate page. Offsite areas not included on this registration may need to obtain coverage under a separate VPDES permit. A. Offsite Activity Name: Address: City and/or County and Zip Code: Latitude and Longitude (6-digit, decimal degrees format): B. Offsite Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): Section IV. Site Information. A. 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 (including the entire area to be disturbed as approved in the Stormwater 10.49 Ac. Management Plan): Primary estimated area to be disturbed (portions with 10.49 Ac. Erosion and Sediment Control Plan approval only): Offsite estimated area to be disturbed (if applicable): C. Property Owner Status: B. Estimated Project Dates (M M/DD/YYYY) Start date: Completion date: FEDERAL ❑ STATE ❑ PUBLIC ❑ PRIVATE 191 D. Nature of the Construction Activity Description (i.e. commercial, industrial, residential, agricultural, environmental): Commercial E. Municipal Separate Storm Sewer System (MS4) name (if discharging to a MS4): Rev 04/2019 PAGE 2 1 7 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 F. Is this construction activity part of a common plan of development or sale? YES ® NO ❑ G. 6" Order Hydrologic Unit Code (HUC) and Receiving Water Name(s). Attach a separate list if needed. HUC I RECEIVING WATERBODY(S) 020802040102 1 Mechums River - Beaver Creek Section V. Other Information. A. A stormwater pollution prevention plan (SWPPP) must be prepared in accordance with the requirements of the General VPDES Permit for Discharges of Stormwater from Construction Activities prior to submitting the Registration Statement. By signing the Registration Statement, the operator is certifying that the SWPPP has been prepared. B. Has an Erosion and Sediment Control Plan been submitted to the VESCP Authority for review? YES ® NO ❑ Erosion and Sediment Control Plan Approval Date (for estimated area to be disturbed).: C. Has land disturbance has commenced? YES ❑ NO D. If this project is using approved Annual Standards and Specifications (AS&S), attach the completed AS&S Entity Form. AS&S Entity Name (if different from the Operator identified in Section II. A.): SEE THE FOLLOWING PAGE FOR SIGNATURE AND CERTIFICATION REQUIREMENTS AND INFORMATION Rev 04/2019 PACE 3 17 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 Section VI. Certification. A person representing the operator as identified in Section I. A. and meeting the requirements of 9VAC2S-880-70. Part III. K must physically sign this certification. A typed signature is not acceptable. Please note that operator is defined in 9VAC2S-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 storm water pollution prevention plan or comply with other permit conditions). In the context of storm water discharges from Municipal Separate Storm Sewer Systems (M54s), 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." Printed Name: Signature (signed in ink): Date: Section VII. Submittal Instructions. Submit this form to the Virginia Stormwater Management Program (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: Department of Environmental Quality Office of Stormwater Management Suite 1400 PO Box 1105 Richmond VA 23218 constructionep@dea.vi rgi n ia.eov If the locality is the VSMP Authority, please send to: The Local VSMP Authority insert address below Rev 04/2019 PAGE 4 17 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. The following permit actions are covered by this form: new issuance, re -issuance, modification with an increase in acreage and plan modifications that do not result in an increase in acreage. Choose NEW ISSUANCE if this Registration Statement submittal is to obtain a new permit coverage, RE -ISSUANCE to renew an active, expiring permit coverage or MODIFICATION to modify an active permit coverage When modifying permit coverage, indicate if the modification is increasing the amount of acreage previous covered (MODIFICATION WITH ACREAGE INCREASE) or changing the site design with no increase in acreage (MODIFICATION WITHOUT ACREAGE INCREASE). Existing Permit Coverage Number. Provide the permit number for a modification or reissuance (i.e. VAR10####). 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 named as the operator, that person (Ora representative of) must sign the certification in Section VI. An operator can 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 (d) 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 M54 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. 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. C. 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 allow the operator to pay by credit card and receive permit coverage approval letters immediately upon approval. Section II. Construction Activity Location Information. Location information related to the project site. 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 Virginia Stormwater Management Program (VSMP) authority if you have additional questions regarding site map requirements. B. Provide a descriptive project name (it is helpful to use the same naming convention as listed on the Stormwater plans), 911 street address (if available), city/county of the construction activity, 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. Construction Activity Entrance Location. Provide an address or decimal degrees coordinates and a description of the main construction entrance where the permit coverage letter will be posted. Rev 04/2019 PAGE 5 17 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT Section III. Offsite 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. If requesting permit coverage for offsite activities, please complete this section. List additional offsite areas to be included under this permit coverage on a separate page. Offsite areas not included on this registration will need to obtain coverage under a separate VPDES permit. A. Offsite activity location information. Provide a descriptive offsite project name, 911 street address (if available) and city/county of all off -site support activities. Provide the 5-digit latitude and longitude in decimal degrees (i.e. 37.1234N, 77.1234W). Please note that off -site activities not covered under this permit may require separate permit coverage. B. Offsite activity entrance location. Provide an address or decimal degrees coordinates and a description of the main construction entrance. Section IV. Site Information A. 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). B. 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). C. 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. D. 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 project (i.e. Commercial —one new office building and associated parking and utilities; Transportation —Roads, sidewalks and utilities; Agricultural —3 Poultry Houses, etc.). E. 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. F. This construction activity is part of a 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. G. 6'h Order Hydrologic Unit Code (HUC) and associated Receiving Water Name(s). Provide all 6'h order HUCs and receiving waters for the site and offsite areas 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: DEQ's VEGIS Mapping Application • Instructions for utilizing DEQ's VEGIS application link: CGP-GIS HUC Instructions Rev 04/2019 PAGE 6 17 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 INSTRUCTIONS PLEASE DO NOT PRINT OR SUBMIT Section V. 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 IV. A. has been submitted to the Virginia Erosion and Sediment Control Program (VESCP) 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. • AS&S Entity Form link: Annual Standards and Specifications Entity Information Form Section VI. 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 (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 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 responsibilityfor the overall operations of a principal geographic unit of the agency. Section VIL 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 to include their mailing address. Who is the VSMP Authority for my oraiect7 DEQ or the locality7 • 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. http://www.deg.virginia.gov/Programs/Water/Stormwate rMa nage me nt/VSM PPermits/ConstructionGeneralPermit.a spx Rev 04/2019 PAGE 7 17 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 extension of Library Avenue, High Street, and the Square, the construction of Park Ridge Drive, and associated utilities and landscaping. The total limits of disturbance on this project is 10.49 acres. The property is bounded by the railroad and Route 240 on the north, Oak Street on the west, and residential communities on the south and east. All construction shall take place in accordance with the Erosion and Sediment Control Sequence of Installation on plan sheet 21)(1). 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, I W 7 copy of the latest Erosion and Sediment Control Plan. Do not reference only.) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL 1. THE FLAN APPROVING AUTHORITY MUST BE RETIRED ONE WEEK PRIOR TO THE PRECONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 62Y02-W EROSION AND SEDIMENT CONTROL REGULATIONS. 3. &1 EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PUN SHALL BE MAINTAINED ON THE SHE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN ARTS OTHER THAN INDICATED ON THESE PUNS (INCLUDING, BUT NOT LIMITED TO OFF SUE BORROW OR WASTE AREAS), THE CONTRACTOR SMALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PUN APPROVING AUTHORITY. 6. THE CONTRACTOR IS RESPONSIBLE MR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY WE PLAN APPROVING AUTHORITY. 2. ALL DISTURBED ARIAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. 8. DURING DBNnTERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. 9. THE CONTRACTOR SHALL INSPECTALL EROSION CONTROL MEASURES PERIODICALLY AND AFER EACH W NOFF-PRODUCING EVENT. ANY NECESSARY REPAIRS OR CIEANUPTO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA. 11. &I WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF RWTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WASTE AREAS ARE TO BE RECUIMED WITHIN ] DAYS OF COMPLETION PER ZONING ORDINANCES MON 5.1.28. 13. ALL TNEAT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARIE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL- TYPE POWER EQUIPMENT SHALL BE UMI ED TO THE HOURS OF ]:DORM TO 9:DORM. 15. BORROW, FILL O0. WASTE ACTIVITY SHALL BE CONDUCTED IN A WE MANNER THAT MAINTAINS LITERAL SUPPORT, OR ORDER TO MINIMIZE ANY WSARD TO PERSONS, PXY$ICgL DAMAGE TO ADJACENT LW N D AND $IRUCRF$/IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE LEE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILTTES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PUN REGARDLESS OF THE SALE OF PINY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. 17. TEMPORARY STABILIZATION SMALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 MEIACRE, AND IN THE MONTHS OF SEPTiMBER TO FEBRUARY TO CONSIST A 50150 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. SEWS MULCH ISTO BEAPPLIED ATSOLBS/1005F ALTERNATIVESPRESUBJECTTO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SMALL BE APPLIED AT 90LBS/10005F, INCORPORATED INTO THE TOP 4-6INCHES OF SOIL FERTILIZER SHALL BE APPLIED AT IODOLBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 1BOLM/ACRE AND CONSIST OF 95%KENTUCKY 31 OR TALL FESCUE AND O-5%PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT BOLB$/1005F. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY EROSION CoxraouNSPECTOR. 19. MAINTENANCE: ALL MM!AM$$XALL BE INSPECTED WEEKLY AND AFTER EACH RAINMLL EVENT. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES SHALL BE REPAIRED IMMEDIATELY. BELT TRAPS SMALL BE CLEANED WHEN 50%OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS SHALL BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION BYRES WHICH COLLECT SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIATELY. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURE ARE NO LONGER NEEDED, SUBJECT TO APPROVAL MY LEE COVI EROSION CONTROL INSPECTOR. $OILS INFORMATON: SB - BELVOIR LOAM, 2 TO ] PERCENTSLOPES, 16 TO301NCME5 TO USHERETTE HEETIVE FEATURES, HYDROLOGICGROUP D ]B- BRADDOCK LOAN, 2 TO ] PERCENT SLOPES, GREATER THAN 60INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, HYDROLOGIC GROUP: B 81- BMDDOCK CLAY WAM, ] TO 15 PERCENT SWPE, GREATER THAN 60INCIES TO RESTRICTIVE FEATURES. WELL DRAINED. HYDROLOGIC GROUP: B 14C - CHASTER WAN, ] TO 15 PERCENT SLOPES, GREATER THAN ED INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, HYDROLOGIC GROUP: B 3EC- HAYEMLLE LOAM, 15 TO 25 PERCENT SCOPES, GREATER THAN 60INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, HYD0.0WGIC GROUP:A BIB-THURMOND LOAM, 2 TO ] PERCENTSLOPES, GRATER THAN W INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, HYDROLOGIC GROUP: B M - UDORTXENIS, LOAMY, GREATERTHAN 60INCHES TO RESTRICTIVE FEATURES PROJECT DESCRIPTION THIS PROTECT CONSISTS OF 3 ROADS AND 3 MINI ROUNDABOUTS, ALONG WITH ASSOCIATED ROAD, CULVERTS AND STORMWATER MANAGEMENT FACILIRES. LIMITS OF CLEARING AND GRADING ARE 10A9 ACRES. ADJACENT PROPERTY THESE IMPROVEMENTS ARE BEING MADE WITHIN TEE PROPERTY BOUNDARY. THE PROPERTY IS FOUNDED BY THREE NOTCHED ROAD (STATE RYE. 240) ON THE NORTH, COMMERCIAL PROPERTIES ON THE WEST, AND RESIDENTIAL PROPERTIES TO THE EAST AND SOUTH. EXISTING SUE CONDTIONS THE SITE IS CURRENTLY CONSISTS OF COMMERCIAL AND INDUSTRIAL USES. THEMAJORITYOFTHESITE1S ABANDONED. OFF SITE AREAS PROPOSED ROADS WILL CONNECT TO EXISTING HIGH STREET, TIRE SQUARE, HILLTOP STREET, AND UNARY AVENUE. CRITICAL EROSION ARMS EARLY ESTABLISHMENT AND PROPER MAINTENANCE OF PERIMETER GENEROUS WILL PROVIDE SEDIMENTATION CONTROL. ADDITIONAL ATTENTION IS M BE FOCUSED ON DISTURBANCE IN THE AREAS OF STEEP SLOPES. EROSION AND SEDIMENT CONTROL MEASURES UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACHOM SHALL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE CURRENT PORTION CRIME VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. THE MINIMUM STANDARDS OF THE VESCH SHALL BE ADHERED TO UNLESS OTHERWISE WANED OR APPROVED BY A VARIANCE BY LOCAL AUTHORITIES HAVING JURISDICTION. STRUCTURAL PRACTICES: L TEMPORARY CONSTRUCTION ENTRANCE-3.02 A TEMPORARY CONSTRUCTION ENTRANCE$HALL BE PROVIDED AT THE LOCATION INDICATED ON THE PUNS. R 15 IMPERATIVE THAT THIS MEASURE BE MAINTAINED THROUGHOUT CONSTRUCTION. T5 PURPOSE IS TO REDUCE THE AMOUNT OF MUD TRANSPORTED DRUM PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. 2. SILTFENCEBARRIER-3.05 ART FENCE SEDIMENT BARRIERS$HALL BE INSTALLED DOWNSLOFE OFARFIS WITH MINIMAL GRADES TO FILTER SEDIMENT USED RUNOFF FROM SHEET FLOW AS INDICATED. ITS PURPOSE IS TO INTERCEPT SMALL AMOUNTS OF SEDIMENT FROM DISTURBED PEAS AND PREVENT SEDIMENT MOM LEAVING THE SIZE. 3. STORM DRAIN INLET PROTECTION-3.0] STONE FILTERS SHALL BE PLACED AT THE INLET OF ALL DRAINAGE STRUCTURES AS INDICATED ON PUNS. ITS PURPOSE 15 TO PREVENT SEDIMENT MOM ENTERING THE STORM DRAINAGE SYSTEM PRIOR TO PERMANENT STABILIZATION. 4. WLVERTINLEIHROTECTON-3.08 A SEDIMENT FILTER PACED ATTIE INIfT OF A QJLVERTTO PREVENT SEDIMENT FROM ENTERING THE SYSTEM PRIOR TO PERMANENT STABILIZATION. B. OUTLET PROTECTION - 3.15 STRUCTURALLY LINED APRONS PLACED AT THE OUTLETS OF PIPES OR CH VINEL SECTIONS TO PREVENT SCOUR AND PROTECT THE gRLET STRUCTURE. B. ROCK CHECK DAM- 320 MATH TEMPORARY STONE OMIT CONSTRUCTED ACROSS A SWALE CT OHRAINAGE DITCH. 10. TREEPROTECTION-3.38 PROTECTION OF DESIRABLE TREES FROM MECHANICAL AND OTHER INJURY DURING LAND DISTURBING AND CONSTRUCTION ACTIVITY. 11. DUST CONTROL -3.39 DUST CONTROL IS TO BE USED THROUGH THE SITE IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT. VEGETATIVE PRACTICES: L MPSOIL(TEMPORARY STOCKPILE)-3.30 TOPSOIL SHALL BE STRIPPED FROM AREAS TO BE GRADED AND STOCKPILED FOR LITER SPREADING. STOCKPILE LOCATIONS SHALL BE LOCATED ONSTE AND SHALL BE STABILIZED WITH TEMPORARY SILT FENCE AND VEGETATION. 2. TEMPoRMY SEEDING-3.31 ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR MORE THAN M DAYS SHRILL BE SEEDED WHX FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS. SELECTION OF THE SEED MIXTURE SHALL DEFEND ON THE TIME OF YEAR R IS APPLIED. 3. PERMANENT SEEDING -3.32 FOLLOWING GRADING ACDVELIES,ESTABLISH PERENNIAL VEGETATIVE COVER MY PUNTING SEED TO REDUCE EROSION, STABILIZE DISTURBED ARMS, AND ENHANCE NATURAL BMUTY. MANAGEMENT STRATEGIES L PROVIDE SEDIMENT TMFPING MEASURES AS A FIRST STEP IN GRADING, SEED AND MULCH IMMEDIATELY FOLLOWING INSTALLATION. 2. PROVIDE TEMPORARY SEEDING OR OTHER STABILIZATION IMMEDIATELY AFTER GRADING. 3. I$OMTE TRENCHING FOR UTILITIES AND DRAINAGE MOM DOWNSTREAM CONWYANCES IN ORDER TO MINIMIZE PERIMETER CONTROLS. 4. ALL EROSION AND SEDIMENT CONTROL P CTUCES SHALL BE MAINTAINED UNTIL THEY ARE NO LONGER REQUIRED M COMPLY WITH THE CONTRACT DOCUMENTS OR STATE LAW. PERMANENT STABILIZATION ALL NON -PAVED ARMS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH PERMANENT SEEDING IMMEDIATELY FOLLOWING FINISHED GRADING. SEEDING SMALL BE IN ACCORDANCE WITH STO. & SPEC. 3.32, PERMANENTSEEDING. SEED TYPE SHALLBE AS SPECIFIED FOR 'MINIMUM CARE LAWNS"AND'GENERAL SLOPES' IN THE HANDBOOK FOR STORES LESS THAN 3:1. FOR SLOPES GREATER THAN 3:I, SEED TYPE SMALL M AS SPECIFIED MR 'LOW MAINTENANCE SLOPES' IN TABLE 3.32-D OF THE HANDBOOK. MR 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. MAINTENANCE (SEE 'MINIMUM STANDARDS' FOR ADDITIONAL INFORMATION). ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE CHECKED DAILY AND AFTER EACH RUN-OFF PRODUCING RAINFALL. THE FOLLOWING ITEMS SHALL BE CHECKED IN PARTICULAR 1. CHECK LEE SILT FENCE BARRIER FOR UNDERMINING OR DETERIORATION OF TIRE FABRIC. REMOVE SEDIMENT WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES HALFWAY TO THE TOP OF THE BARRIER. 2. CHECK LEE SEEDING AREAS TO ENSURE THAT A SOUND OF GRASS IS MAINTAINED. FERTILIZEANDRESEEDAS NEEDED. 3. CHECK THE CULVERT INLET PROTECTION FOR SEDIMENT BUILDUP. CLEAN OR REPLACE AGGREGATE IF CLOGGED BY SEDIMENTH REMOVE SEDIMENT AND RESTORE THE IMPOUNDMENT TO US ORIGINAL DIMENSIONS WHEN SEDIMENT HAS ACCUMULATED TO ONE HALF OF THE DESIGN DEM. SEQUENCE OF INSTALLATION L A PRE CONSTRUCTION MEETING IS REQUIRED WITH ALBEMARLE COUNTRY MS INSPECTOR, CONTRACTOR, OWNER, AND ENGINEER. THIS MEETING $HALL TAKE PACE ATTXE COUNTY OFFICE BUILDING. CLEARING LIMLI$ MUST BE FLAGGED PRIORTO THE MEETING WITH ONE (1) WEEK OF NOTICE. 2. INSTALL CONSTRUCTION ENTRANCE. 3. INSTALL PERIMETER SILT FENCE AND TREE PROTECTION FENCING. 4. CLEAR AND GRADE ARM FOR THE SEDIMENT BASIN AND INSTALL S. INSTALL DIVERSION DIKES NECESSARY FOR DRAINAGE M SEDIMENT BASIN AND REMAINING SILT FENCE. 6. ONCE LEE SEDIMENT BASIN AND LEE PERIMETER CONTROL MEASURES ARE IN PLACE, CONSTRUCTION WHXIN DIED MAY BEGIN. Z. ROUGH GRADE PROTECT AREA. S. INSTALL ROADS AND ASSOCIATED UTILITIES. INSTALL INLET AND COURSE PROTECTION. 9. ONCE UPSLOPE ARIAS ARE PERMANENTLY STABILIZED, AND WITH THE COUNTY INSPECTOR MPRONRL, REMOVE INLET PROTECTION, DEWPTER SEDIMENT BASIN, AND CONVERT TO LEVEL 1 WET POND. REMOVE REMAINING EROSION AND SEDIMENT CONTROL MEASURE. ID. SEED ALL DENUDED AREAS PER VESCH STANDARDS. MINIMUM STANDARDS: AN EROSION AND SEDIMENT CONTROL PROGRAM ADOPTED BY A DISTRICT OR LOCALITY MUST BE CONSISTENT WERE THE FOLLOWING CRITERIA, TECHNIQUES AND METHODS: MS -L PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEEN DAYS AFTER FINAL GRADE HE REACHED ON ANY PORTION OF THE SITE. TEMPORARY COIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINALGRADE NE WILL REMAIN DO MANIFOR LONGERJHAN 14 DAYS. PERMMENTSTABILIZATION SHALL BE APPLIED M AREAS THAT ME TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. MI DURING CONSTRUCTION OF THE PROJECT,$OIL STOCKPILES AND BORROW ARMS$HALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT 15 RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILE$ ON 511E AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE. MS-3. APERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER 15 ACHIEVED THAT IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. MS -4. SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED N TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND-DEM)RBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PUCE. ME . STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DUKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. MS -6. SEDIMENT TRAPS AND SEDIMENT BASINS SMART BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP OR BASIN. A. LEE MINIMUM STORAGE CMACR Y OF SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE ARIA AND THE TERM SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE ACRES. B. SURFACE RUNOW FROM DISTURBED AREAS THAT IS COMPOSED OF FLOW FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES SHALL BE CONTROLLED BY SEDIMENT BASIN. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE ARM THE OIIIFALL SYSTEM SHALL AT A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A 25-YEAR STORM OF 24-HOUR DURATION. RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS SHALL CORRESPOND TO A BARE EARTH CONDITION OR THOSE CONDITIONS EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED. MS-]. CUTAND FILLSWPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNERTHATMOU MINIMIZE EROSION. SLOPES THAT ME FOUND TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED. MI CONCENTRATED RUNOFF SHALL NOT FLAW DOWN CUT OR M1SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CWNNE4 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 MS-Il. BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL. ADEQUATE p111E7 PROJECTION 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 LEE WORK ARM TO LEE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NONERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. PARTNER FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBIE COVER MATERIALS. MS-13. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX -MOM PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NONMODIBLE MATERIAL SHALL BE PROVIDED. MS 14. ALL APPLICABLE FEDERA4 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 AMR 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 GOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF SITE PROPERTY. D. MATERIAL USED FOR BACKRLLING TRENCHES SHALL BE PROPERLY COMPACTED UNORDERED MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RESTMIUnnONSHAUBEACCOMNSHEDINACCOMANCEWT SE REGULATIONS. F. APPLICMLESAFEHYREGULATIONSSHALLBECOMPUEDWHH. MS -1]. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS PROVISIONS SMALLER MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC READ SURFACE, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED MOM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AMR SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO URGER LAND DISTURBING ACTIVITIES. MS-I8. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SIZE STABILIZATION OR AMR WE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS MERW15E AUTHORIZED BY THE LOCAL PROGRAM AUTHORITY. TRAPPED SEDIMENT AND LEE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY SUABRUGED TO PREVENT FURTHER EROSION AND SEDIMENTATION. MS-l9. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SUES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME VELOCITY AND PEAK HOW RATE OF STORM HATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE FOLLOWING STANDARDS AND CALIFORNIA A. CONCENTRATED STORMWATER RUNOFF LEAVING A DEVELOPMENT SIZE SHALL BE DISCHARGED DIRECTLY INW AN ADEQUATE NATURAL OR MAN-MADE RECEIVING CHANNEL PIPE OR STORM SEWER SYSTEM. FOR THOSE SINES WHERE RUNOFF IS DISCHARGED INTO A PIPE OR PIPE SYSTEM, DOWNSTREAM STABILITY ANALYSES AT THE OUHALL OF THE PIPE OR PPE SYSTEM SHALL BE PERFORMED. B. ADEQUACYOFALLCHNNNELSAND PIPES SHALL BEVERIFIED IN THE FOLLOWING MANNER: (I)THE APNCAM SHALL DEMONSTRATE THAT THE TOTAL DRAINAGE ARM TO THE POINT OF ANALYSIS WITHIN THE CHANNEL IS ONE HUNDRED TIMES GREATER THAN THE MNTRJBUUNG DRAINAGE ARM OFTHE PROTECT IN QUESTION. 2NATURALCMANNN55MALL REANALYZED BITTER USE OFAMN-YEAR FREQUENCY SHOW Ul VERIFYTHATVERIFY O ERWILLNET OVERTOP CHANNEL RANKS AND TWO -YEAR VELOCITY TO VERIFY NO EROSION OF CHANNEL BED OR BLANKS. (SHALL PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS SHALL BE ANALYZED BY THE USE OF A TEN-YEAR FREQUENCY STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP LIS &W KS ME BY LEE USE OF ATWQYFAR $CORM TO DEMONSTRATE THAT STORMWATER WILL NOT CAUSE EROSION OF CHANNEL BED OR BANKS. EUPIPES AND STORM SEWER SYSTEMS SHALL BE ANALYZED BY THE USE OF A TEN-YEAR FREQUENCY STORM TO VERIFY THAT STORMWATER WILL RE CONTAINED WITHIN THE PIPE OR SYSTEM. C. IF EXISTING NATURAL RECEIVING CHANNELS OR PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS OR PIPES ARE NOT ADEQUATE, THE APPLICANT SHALL: (L)IMPROVE THE CHANNELS TO A CONDITION WHERE A TEN-YEAR FREQUENCY STORM WILL NET OVERTOP LEE RANKS AND ATWO -YEAR FREQUENCY $CORN WILL NOT CAUSE EROSION TO THE CHANNEL BED OR BANKS; OR ZHIMPROVE THE PIPE OR PIPE SYSTEM TO A CONDITION WHERE THE TEN-YEAR FREQUENCY STORM IS CONTAINED WITHIN THE APPURTENANCES; OR (3)DEVELOP A SIZE DESIGN THAT WILL NOT CAUSE THE PRE DEVELOPMENT PEAK RUNOFF KATE MOM A TWPYMR STORM TO INCREASE WHEN RUNOFF CUTFALHS INTO A NATURAL CHANNEL OR WILL NOT GCSE THE PRE DEVELOPMENT PEAK RUNOFF ANTE FROM A TEN-YEAR STORM M INCREASE WHEN RUNOFF ODUALLS INTO A MAN-MADE CHANNEL. (4)PROVIDE A COMBINATION OF CHANNEL IMPROVEMENT STORMWATER DETENTIONIRETENTIONHORITY OR OTHER MEASURES WHICH ISION. SATISFACTORY TO THE PIAH APPROVING AUTHORITY TO PREVENT OOWNSTRFAM EROSION. D. THE APPLICANT SHALL PROVIDE EVIDENCE OF PERMISSION TO MAKE THE IMPROVEMENTS. E. ALL HYDROLOGIC ANALYSES SHALL BE BASED ON THE EXISTING WATERSHED CHARACTERISTICS AND THE ULTIMATE DEVELOPMENT CONDITION OF THE SUBJECT PROJECT. F. IF THE APPLICANT CHOOSES AN OPTION THAT INCLUDES STORMWATER DETENTION/ RETENTION, HE SHALL OBTAIN APPROVAL FROM THE LOCALITY OF A PUN FOR MAINTENANCE OF THE DETENTION FACILITIES. THE PUN SHALL SET HIM THE MAINTENANCE REQUIREMENTS OF WE FACILITY AND THE PERSON RESPONSIBLE FOR PERFORMING THE MAINTENANCE. G. MERRILL FROM A DETENTION FACILITY SHALL BE DISCHARGED TO A RECEIVING CHANNEL AND ENERGY DISSIPATERS SHALL BE PLACED AT THE OUTFALL OF ALL DETENTION FACILITIES AS NECESSARY TO PROVIDE A STABILIZED TRANSITION FROM THE FACILITY TO THE RECEIVING CHANNEL. X. ALL ON -SUE CHANNELS MUST BE VERIFIED TO BE ADEQUATE. LINCREASED VOLUMES OF SHEET FLOWS THAT MAY CAUSE EROSION OR SEDIMENTATION ON ADJACENT PROPERTY SHALL BE DIVERTED TO A STABLE COLDEST, ADEQUATE CHANNEL OR DETENTION FACILITY. LIN APPLYING THESE STORMWATER RUNOFF CRITERIA, INDIVIDUAL LOTS OR PARCELS IN A RESIDENTIAL COMMERCIAL OR INDUSTRIAL DEVELOPMENT SHALL NOT BE CONSIDERED TO BE SEPARATE DEVELOPMENT PROJECTS. INSTEAD, THE DEVELOPMENT, AS A WHOLE, SHALL BE CONSIDERED TO BE A SINGLE DEVELOPMENTPROJEC. HYDRAULIC PARAMETERS THAT REFLEECTTHE ULTIMATE DEVELOPMENT CONDITION SHALL BE USED IN ALL ENGINEERING CALCULATIONS. K. ALL MEASURES USED TO PROTECT THE PROPERTIES AND WATERWAYS SHALL BE EMPLOYED IN A MANNER WHICH MINIMIZES IMPACTS ON LEE PHYSICAL, CHEMICAL AND BIOLOGICAL INTEGRITY OF RIVERS, STREAMS AND OTHER WATERS OF THE STATE. L ANY PLAN APPROVED MDR TOJULY 1,2014, THAT PROVIDES FOR STORMWATER MANAGEMENT THAT ADDRESSES ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS SHALL SATISFY THE FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS IF THE PRACTICES ARE DESIGNED TO LDETAIN THE WATER QUALITY VOLUME AND TO RELEASE E OVER 48 HOURS; R. DETAIN AND RELEASE OVER A 24-HOUR PERIOD THE EXPECTED RAINFALL RESULTING FROM THE ONE YEAR, 24 HOUR SIORM;AND RI. REDUCE THE ALLOWABLE MEAN FLOW KATE RESULTING FROM THE L5,3 AND 10-YEAR, 24-HOUR STORMS TO A LEVEL THAT IS LESS THAN OR EQUAL TO THE PEA( FLOW RATE FROM WAS IN GOOD THESITEPDDU,ING N OFTHEAIZUED PEAK ROW RATE ION, ACHIEVED THROUGH MULTIPLICATION OFTRUFORETEDPEAKROWRATE BYAREDUCTION FACTOR OD IS EQUAL TO THE RUNOFF RUNOFVOLUME EE FROM T WHEN ELF WASH SUE INI FORESTED CONDITION DIVIDED L THE ME FROM THE STEIN ITS PROPOSED CONDITION, AND SHALL BE EXEMPT FORM ANY ROW RATE CHANNELS S DEFINED DINMVELOCITY REQUIREMENTSMRNATURAL OR MAN-MADE CHANNELS AS DEFINED IN TH REGULATIONS PROMULGATED PURSUANT TO {I0.1-5620R IO.l-90 OF THE AC M. FOR PLANS APPROVED ON S O S ER 10.1 ULY561 A OF T E ACT AN ANTE CMACISUBSECTION AND VELOCITY REQUIREMENTSOF{ WATT QAOFTHEACT AND THIS SUBSECTIONSMALL BE SATISFIED BY COMPLIANCE 10.1-6WITH WATERQUANTITYREFWREMENR INTHE STNDAITT ER MANAGEMENT, UNLESS ETSEQ. OFTHE CODE OFVIRGINIA) ANCATTENDANT REGULATIONS, UNTIHE SUCHLAND DISTURBING ACTIVITIES ARE IN ACCORDANCE WITH REGULATIONS. THE NRGINIA STORMWATER MANAGEMENT PROGRAM (VSMPo PERMIT REGULATIONS. N. COMPLIANCE WITH THE WATER QUANTITY MINIMUM STANDARDS SET OUT IN 4VAC5D-60-66 OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) PERMIT REGULATIONS SHALL BE DEEMED TO SATISFY THE REQUIREMENTS OF MINIMUM STANARD 19. GENERAL EROSION AND SEDIMENT CONTROL NOTES: EROSION AND SEDIMENT CONTROL NOTES ES -1'. ALLVEGEUTNE AND STRUCTURAL EROSION AND SEDIMENT CONUtOL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HUNDREDS AND VIRGINIA REGUUTONS 4VAC 50-30 ENS REGULATIONS. ES -2', THE EROSION AND SEDIMENT CONTROL AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY AND ONE WEEK PRIOR TO FINAL INSPECTION. ES-3: E&S CONTROL MEASURES ARE TO BE INSTALLED PRIOR TO OR AS THE FIRST STEP IN LAND DISTURBING ACTIVITIES. ES -4'. A COPY OFTHE APPROVED SEES CONTROL PUN SHALL BE MAINTAINED ON THE SUE AT ALLTIMES. ES-5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PUNS, THE CONTRACTOR SHALL SUBMIT SUPPLEMENTARY EROSION CONTROL PUN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PUN APPROVING AUTHORITY. ES-6'. IF THE APPROVED EROSION CONTROL STRUCTURES DO NOT SUCCESSFULLY CONTROL SOIL EROSION THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY, AT NO ADDITIONAL COST TO THE THE EROSION AND SEDIMENT CONTROL AUTHORITY. ES-]'. &I DISTURBED AREAS ARE TO DRAM TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING HAND DISTURBING ACTIVITIES MD DURING SHE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. ES-R THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES WEEKLY AND AFTER EACH RUNOFF PRODUCING RAINFALL. ANY NECESSARY REPAIRS NEEDED TO MAINTAIN THE EFFECTIVENESS OF THE EM STRUCTURES OR SYSTEMS SHALL BE MADE IMMEDIATELY. ES-9'. PERMANENT OR TEMPORARY SOIL STABILIZATION SMALL BE INSTALLED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STMELQATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED ARTS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 14 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO MEAN THAT ARE TO BE HEFT DORMANT FOR MORE THAN ONE YEAR. ALL MUST BE COMPLETED ACCORDING TO THE STANDARDS AND SPECIFICATIONS SECTION 3.31 AND 3.32IN LEE VIRGINIA EM CONTROL HANDBOOK. ES-10; ALL SEEDING SHALL BE MULCHED IN ACCORDANCE WITH THE VIRGINIA EM STANDARDS AND SPECIFICATIONS ON MULCHING SECTION 3.35. ES-11: TEMPORARY AND PERMANENT SEED VARIETIES SHOULD BE CONSISTENT WITH THE ERS HANDBOOK FOR THE PIEDMONT REGION OF VIRGINIA UNLESS OTHERWISE APPROVED BY THE EROSION AND SEDIMENT CONTROL AUTHORITY. ES-12; PERMANENT STABILIZATION WILL NOT BE ACCEPTED BY THE EROSION AND SEDIMENT CONTROL AUTHORITY UNTIL U IS UNIFORM, MATURE ENOUGH M SURVIVE, AND INHIBITS EROSION. ES-13: ONCE THE DISTURBED AREAS HAVE BEEN STABILIZED TO THE SATISFACTION OF THE SIC INSPECTOR, ALL EROSION CONTROL STRUCTURES SMALL BE REMOVED. FNN444KFF rJr�LALTH o`.'y\ i� 2' GLINT W. % u S IF LET iS 6ie.X 43" 34, A 8117/22 E' G S S O t / F. A L A NN41441N • CL n 0 U) z 911012020 C. GARNER DESIGNED SHIFELETT CUMCKFD My G KOTARSKI 111E 38593 L SPACING BETWEEN CHECK DAMS A L I L - THE DISTANCE SUCH THAT POINTS A AND S ARE OF EQUAL ELEVATION 210 ACRES OF DRAINAGE AREA: 6" T FILTER HILT R CLOTH CLOTH (OPTIONAL) (DOWNSTREAM VIEW) (OPTIONAL) (DOWNSTREAM EW ) VI VWT#1 COARSE VOOTAI COARSE AGGREGATE FLOW pGGREGATE 7( CD ' OR 3M OF DITCH LASSI RIPRA HEIGHT 9.R0 PIPE 01TJIET •aADITIOAS 'i •�p„- . PRECUT THORLAMEA OHNOREPHADDRANNAL SECT ON FIT AGROMWENIABDIAW .. ��. Aid NOTE V6 RPR .GR EURPRM fY61gIB K9 OR GRANCSSES L GTHE LENGTH OFTIERIPMPAPNp1A$CALCULATED USING PLATES iHEMAIIMUMSTMEDIAaETERBUiewT STHM6 eNCHESME TABLE 3.31-B ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS 'QUICK REFERENCE FOR ALL REGIONS' PIANPNGDATES SPECIES SEPT. 1-FEB. 15 SWSOMIXOF ANNUAL RYEGRASS (LOU UMMULTYFLORUM) A CEREAL(WINTER) RYE (SEDATE CEREALE) FEB. 16-APR. 30 ANNUAL WEGRASS (LOLIUM MUTT-FLORUM) MAY 1-RUG. 31 GERMAN MILLET (SETARIA ITALICA) TS TEMPORARY SEEDING PLANT AL TABLE 3.32-D RATE ILHSIACRE) 2 X A' WOOD SILT FENCE DROP INLET PROTECTION DROP INLET SOL FRAME -`AN MAX. 3 _� EXCESS AT CORNERS 50-100 PERSPECTIVE NEWS STANE FABRIC MICE I ulx. 5O DETAIL A ELEVATION OF STAKE AND FABRIC ORIENTATION SPECIFIC APPLICATOR THIS METHOD OF BUT PROTECTON Is APPUCABI£ WnwE THE INLET DRAINS A RELATIVELY FIAT AREA (SLOPE NO GREATER THAN ISH WHERE THE INLET SHEET OR OVERLAND ROWS (NOT EXCEEDING 1 CFS.) ARE 3.31 IP FOR CAL TIE METHOD SHALL NOT APPLY TO INLETS REDDENING CCRCORRATED ROW$ SUCH AS IN STREET CR HICHSAY MEDIANS. TOTAL CBS. PER ACRE MINIMUM CARE LAWN COMMERCIAL OR RESIDENTIAL 175260 LOS. KENTUOKY3I OR TURF -TYPE TALL FESCUE 50-100% IMPROVEDPERENNNLRYEGRASS 0-5% KENTUCKY BLUEGRASS 65% GENERAL SLOPE (3:1 OR LESS) KENTUOKY3I FESCUE 128 Ms. REDTOP GRASS 21B5. SEASONAL NURSE CROP2111H5. 50 CBS. LOW MAINTENANCE SLOPE (STEEPER THAN 3:1) KENTUOKY3I FESCUE 108LBS. REDTOPGRABS 2LB5. SEASONAL NURSE CROP' SOME CROWNVETCH" 20LBS. 150 CBS. USE SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATES AS STATED BELOW'. FEBRUARY 16TH THROUGH APRIL... ........... ... ...... ANNUAL WE MAY 1ST THROUGH AUGUST I5TH ...... FOXTAIL MILLET AUGUST I61H THROUGH OCTOBER ........... ANNUAL WE NOVEMBER THROUGH FEBRUARY I5TH ___.__WINTER RYE SUBSTITUTE SERICEA LESPEDEDEA FOR CROWNVETCH EAST OF FARMVILLE, VA (MY THROUGH SEPTEMBER USE HULLED SERICEA. ALL OTHER PERIODS. USE UNHULLED SERICEA(. IF FIATPEA IS USED IN LIEU OF CRCWNVTTCH, INCREASE RATETO SO LBSIACRE. AILLEOUMESEED MUST BE PROPERLY INOCULATED. WEEPING LOVEGRAM MAYBE ADDED TO ANY SLOPE OR LOWAMINTENANOE MIX DURING WARMER ❑D0 0110 STANDARD ORANGE NNYL OR PL-STIC CONSTRUCTION FENCE ATTACHED TO PoSTS (PRE -WEATHERED WOOD, GALVPN2ED STEEL. IRON CR THICK PVC PUSTICL AT LEAST CO' ABOVE FINISH GRADE WITH SPAN BETWEEN POSTS NO GREATERTHAN 6 ONCENTER. EVERY NINIHPDBTSHALL CONTAIN A WARNING SIGN THAT CLEARLY IDENTIFIES THE FENCE AS ATREE PROTECTION FENCE. TYPICAL ORIENTATION OF TREATMENT - I $OIL (STABIUZATON BLANKET) ROTECIOE CONGO MAY BE APPLIED ACROSS THE SLOPE. SPHERE THERE IS A BERM AT THE TOP BERM ,GBEE OVER TLE BERM AND ANCHOR IT BEHIND OFF BERM ON STEEP SLOPES, APPLY PRCFTECRV� EDITING PARALLEL TO THE MI UP FLOW AND ANCHOR MOURRELY BRING MATERIAL DOWN TO A TERMINI THE A1111M INSTALLAGON. THEN FEW END UNDER A- AND SEARLE AT 12- `imI IN DITCHES, APPLY PROTECTWE CO�IHG PARALLEL TO FIRE DIRECTOR OF FLOW. USE CHECK SLOTS AS RECUBED AWND JOINING MATERIAL IN FEE DENBY, OF THE DUTCH IF AT ME ROSSI NO SCALE 3'39 QP SILT FENCE CULVERT INLET PROTECTION GlOTANCE IS 6' `FLOW ++OPTIONAL STONE COBIBINATON MINIMUM F ROW IS fi�'F�TI TBWABD EMBANKMENT JHIGH OE ^w0T'1 NA. 0. { OR OLM$ ICOMB'AGCMCAM i0 REPLA MANAP oREESIDE • WHEVELOOTV OF FLOW IS EWECR 300-1 ICHA � SIDE ELEVATION FULWCURi OF FORAM AND SCIAMOSES OPERATOR PLAN VIEW 1.. ° 31''Y3z.,N,DSF33.: YEAR isz IRN FILTER CLOTH SECTION A -A -41�N �� ! �3i.V43'�T.i£T4 N CpIPACTE0001L L �E IeM LL LL (LILT DD (io 09 I. SITHESTAKES FL 1 END( IN101XEiFENCX ALCUSTH LE" ABA, FLD SP � SHEET FLOW INSTALLATION (PERSFECTIYEVIEW) a B N SF DRAINAGEWAY INSTALLATION (FRONT ELEVATION) DER PROFIL A, r0 i WIN;.I PLAN A AlA AMP a1'ry T1 d-t�uel 1 SRI,10, FI WA 4 Wv Af H.U,SK NL. t MTw[u rsV'FlUG AMe.0 Hw'. e�Cre apyn..rnl rLtl" Aea m rmw N WW-U eTllsaMnm WY OVP�'/atLM1�lfrnm mle�wunH�'.0 i4au¢..IJclvsmu-Jnmiveu. PAVED WASH RACK .NNBN.. rJrLALTH � O`y 2' CLINT W. SA u S T LET > Ue.n. NMI Bll]/R2 i �SNANWAL EP �p EE do €LMz €aye ••• 0 U) z 911012020 C. "MER GElUGNEGGl SHIFFLETT G KOTARSNI IlAl AF ]G W Z) Z Lu 1�Q6/ LPL\ W J I Ln 00 M M r-I r-I U a 38593 .NN..... O`J4 rJr�LnLTH 2' CLINT W. x� u S T LET > Ue.n. 43" �4 Bll]/32 i GC �SN'GONAL is ma aE n €Wz ¢sSa C 3 35a H a4 �ae o� a F p aE mIs ur w N ED is O p L 911012020 D. "MEF DESIGNED SHIFFLE)T •• • G KOTARSNI • • scnir • • • • Ln w J f W LU 0 \Z Q � W a Z e � 9.01 J � i� z a 1--1 Z J' O U s w d Ln£ Z LU co Ma�!a s M ,1 0 v) e* E d 01 © U o E.? Ln LU 95 y W 95 i� H ,oBNo. 38593 1 5a 2E(3) �p TabE 15. 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N 0 �q N/FCWNry ]/gFLE \ p VIFGIN \ 6 `I NO. 06' !�!` \ FZ�/ AO,GD \ N1 ]� t LINIISWCLEMIXG PND GAADIHG - O6Af6S PG.D / \* FE/�LC 00' CLINT W. 9 O.6 . PG 28l (PLA son w6ounRTmx - \� v ua sJ4r b,, �__\\, �\\�\ U S F LET ep0 & DMINRGE DMDE cf CONST.CTIDx INTMNLE 3.Dz]011ALz G� nagiN OCONSTRUCTION 0.DRD 6TABIUR ION 3.03 s6 �G�F _ a ^8SITfNCE 3.05 L5 EINT PCC3.07 1OESEMSCALE 1y O ® / /N�LHARLOTT4BIM ; SPAftBE- / DrvEPSIonDrcE 33.0 .19 0 /CABM/8PA. 0� .8LENEv.EL2SMENB43�<wy�c5sa:o mu+A,OO / SEDIMEM B09N C 3G / 3EMMM0.Y SffDING ASPHALT II F 6 / p) QJ v3� �� �. CONCRETES(�B 3.31 ^i fyyy / ,\� \ � P6 PE0.NOHEM SEEDING 3.32 \ I \ `� 7246 ? `` \� !g\ MU MUILHING 3.33 n \� B\. 1 P /P•f T9'i ``�, \ �\ \ \�` l /' /// `� _ l 6E'e wp Ola BM BUNMET M..3.36 TM/J8 /O1 �O11A0� !\ W ABANOI NEOj){I� )233 ; TMP 1"Id 0JIC8 \\\ ' \ \-F l r / / 'B �''_-- nr c RLO7IE8 DR§ZETNE14TOWNASsocIATEs.LLC \� 12e2\- TaEfPaFSEavnnoufBl¢ 3.39 MMnn!�ggN..ANa saRrr/ ( r' �uMe. u68. 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LLc 1 l / \ $$ ;124 / / / til � GS��� izB1 1 �7` \ / -tI1b-B`LII�-✓,lam 9na/zaza Q' 18'X28' TEg ENi l0B L \ \ \ \ FOR EDIMEN Y23A I - p g /_ f - G m _ olwwry ev @Qi ,PG 53�(PLAT) \� \ / 'I l SPARSE AVEMENT I } T163G m _ ,719.LL'� �/,.'' m cGAmeR / ^ RUINS \ \ \ 77-. moPauwz-ofcfin)666 / �!� / \� ll Gs/ i I_,' /A' 9� I Ism\ 1 , m o DESIGNEDAY N/FELEFTERIOSK — — J15 — l �' \ 1 \ 1 / rC 9 /` ` O \v 7159 0'•"'- ' Z • G SHIFFLEIT VASSALOB ASPHALT P ! /,� l 'J226 - .\-] \C5\ / �' ,� �l I /bJ' /CONCRETE SLAB/ 1Z93 / l` o'/�L _- \ n. • OB 435$ PG 16 PAFKING 1 \ \ " / P g Lp¢ I pl WAFEHWSE c„rcuso By O.B. G15s. PG 10 13 j / r \)iL) \ - n3.5 / _� ' '; g / / / / y 2 g/ \ I I (ABANDONED/ • (PLAT/ LOCKBUILOINO, / Q Z�y • C. 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GAMER V `` TIP _ 7 _ I _ ==-1 _ / _.€� 1 , s' �j ` ♦1 I� I`f 'r ,�f ill _ �� C SHLFFLETT \♦ ` 1 I 1 m E rpvc _ r I I g - — - _ -tee- \ _ _ t04-_ /' / / _ ' , i'` / N ` `♦ ` - rulVDs / / _ cxrcxso ev II ♦ I II 0' P05642-OOL0.0 • GKOTARSKT \ I ADFIOLLAI _ .]02' / ' i _ OB�30T,PG53r _ • I"=30' DE IT LOT�G IT - _ I-___�________` ♦ 1 siDIFj �1 cMP Z L�m' -TU -)oo i 'I ,ai :�i_- -- --♦, ♦\♦ _ ,uNBERG[1oUN. ,1 _ • a ,_______ �- \♦III III I ` }ENTpry 'J /, 6 r GRAVEL AREA i' I I STCRAOF�RN� .699'- -69Y69 \I�1�I\II I BV 0T(1♦E��� /y N I EI:� m' _ / 699'' ��i `i` �q II `♦A�J IAA♦ l` eAI/ L.�� y _ - _ _ /// _- _ ///� ' , `♦\♦♦♦♦\II r PROPOSED PERMANENT` TMPOSSA2-04."C1W , / / _ / 1 DRAINAGE EASEMENT FOR N/FEMMETTOAftINgN 111 - II / W i fi92 I : / C0UNttM41NrENANCE , _ I - - _ / MILHELLESUE SIMPS p' Ill ' / _ ___ _'_ 1 - - 1 _ 696 �6 - / _ - _ III \ _ _ _ _ / - h� In i' _ _ I v\ .� 3 6 0RB3Dpfi 1F _ _ _ 11 111 L0T21 Lu ' - __ __ _ ____ ___ ____ JIII rI l ♦ I ^ I _ _ - PARKB/OE > -6g0_-_ ',il.,/ / OB. PHDSE�LAGEB -___ _ �g90� /•ii ____ / � - - _______ -- q / A� I /'/I� �1 T _ 1�.��.�(Pu r✓ �- O � � � ^\ ���'.� / / \______ i % y hl Lm�fMRya¢�sy6Az o�� ' / A / 1 Ij p �� �MARdeLE �__ ce � a W ♦ - 14 SHARE6ACCE35 / I/ \ M•CIRCULAR GMTEINLET, I✓ 6 ♦Q.BJe)D%PG. US / Y D B EASEMENT / \ / / PROPOSED PERMANENT_- _ pRAIN4GE EASEMENT FOR — / LLLiLL c� _ '4 ` -1 C0UNTYM4INTENAN ........... CE ♦_��4�\ _ __ _„'EHARED ACCESS r 0.8 613, PG 15B 153 (P/RTJ $_ HJ1I Z EMENT 1¢'RIGNT0FWAYEASEMENS _pAftI _ _ .:::c / WHTY O : p_ , 1 V Z i ��� f� i 6g4 �J _ _ _ _ _ _ 1 % 1' ENG¢9ro FENCE i J \ ♦ - N I �_ i-'�. BBB _ _ �6j�M. .' / 11D3 _ i WF ft0GA'BAI¢CL0.¢i /y�� £ PRO-- ' ` _ - CM/TC ELC _-' 3 1 ' W m v a3 TREENNE_PROPOSED PERMANENT 168-' Z ♦ pRAINAGE EASEMENT FOR - 88 Q i -' .. I �' - _ - qy�r CWINNELRV "COUNTY MAINTENANCE BLIC DRAINAGE, GE M @a -<' - 6 = - = _ - _ rl R-' PPROXIMATEEASEMENT PoTi• K Qy I 101 ` @r. LCCA IONO _ _ f COUNTY NOTE: \- _ -`.. _ _ ___ _ ME _ 3 y BLEW-OFMAI NPNCE� MBLY _ THE ENTIRETY OF THE FOLLOWING PARCELS-`�'-------- 'HI _ / - BEWITHINATEMPORARYCONSTRUCTION EASEMENT FOR GRADING, UTILITY INSTALLATION _' i ' _-' HAS B RELOCATION AND OTHER CONSTRUCTION OB. 19>pG 456p(P(AT w ACTIVRIES AS INDICATED IN THIS PLAN: / > Y5 TIP OS6A2-01-00-0]i BO _ _ ' - Ir ,' !e>¢\ \ 1 - / _ fr _ l, TIP O56A2-01-W-0]ipJ rr ` 480 •e TMP O564Q 00-02500 / \'` ^` \I �' �T , ` / \ ` / _ TEMPORARY G 0A1104C0 _ -�� / / _ _ �' _ - r _ _ _ _ I _' �' _ _ _ _ - - _ _ _ -" h BABEF-' : C� / - i -\_ _ _ _ / I _ _ _ _ _ _�zeY I ��,- I' CONST DEMENT TIE TO EXISTING aEa F064 TMP 055a1OR0AC0— _ `- _ `_`_SA �\I `\ � i \♦\♦"`S � ♦♦\II _ _ _ __ � �� _ EI~5 I GRPDE 8e f0 T &-OL0T96, BG0CKA♦ I _ � r•♦ - 11�♦` ♦C/Qy1 GULL ''- -- - '- _' / APPROXIMATE } T I B� MOTOR OB 135. PG 3T8 (PGA» �_I �+.-,T l \ " _ �\ ♦� I ``.-. PA'A . 3 . E 58D pp L 0 60, 1w LEGEND: NPr .. PRE -DEVELOPMENT STORMWATER NARRATIVE: M I M I M I M I M I M UNITS OF......... DISTURSANGE ALTN p rj THE EXISTING DRAINAGE ON SITE CURRENTLY DRAINS TO THREE OUTFN__POINTS. PRE -DEVELOPED DA I'. DRAINS E4ST TO EXISTING INLETS IN OAK STREET �J PREDEVELOPEDDA2'. AREA INSIDE OF THE LOD THAT DRAINS TO THE SOUTHEASTTOAN EXISTING STREAM — — — — — — — DRAINAGE DIVIDE CLINT W. ^� PREDEVELOPEDDA213: AREADUTSIDE OFTHELODTHATDRANSTOTHE SOUTHE4STTOAN EXISTINGSTREPM SCALE V" 0' /l PRE-OEVELOPEODA3'. DRAINSNORTHACROSSTHEEXISTINGRAILROADTRACKS I•LI. TIME OF N r1M /Y % PREOE UWMFNTUWDCWER "� CONCENTRATE PATH A /22 _ \ !' 8,ITa,N//O.A'Ab ENO ail0 \ --_- _ Q€ PRE -DEVELOPED OAS MORTHC as prD AREA=0.26 ACRES 8w $ TC=6.0 MIN. ¢ \ / SHEET - / k/� �t - _ OUTFACE 3 J Z LOW. ' �, _�__ �_- _-- _ 1 " 7 , TRA N ,,..\ \ \ mo• o r_= - ~�= _ -� ^ f. T a __ - RATE OFfLOW I/ v J, AREA=1.06 ACRETS : �_� '��'- E/ . lIi �/ / ,[■\\a\ \�/ \ ,' �r` `. _1 (1 \.'\ �`� 's _ h, ' , - �'�- _ - _ i ___ __ -,� -- 9/o1rw0/wIn0e2r0 CSAMARPRE-DEVELOPED DAI (WEST)F_HEErTLOW / I CN=90 / ',5 r I K� ./ .' /\ ' ),; 1 \•\� �I rl r r _ _ TC=6.0 MIN. ', h Z 1 Ir _` T SITION ti' r i j `I 1 - _ • eslcxeo er O OW \ r \ \\.� ` \ I r , " _ _ _ _ • G SHIFFLFTT 'IfTPALL I\ NT \_ \� I_ I / / 1 / � , PE P. \� \ ' �. \ HALCO}Y�` 11 _ _- 'A4 �.' / � �! Sy ), ��y` C7NT `T�'p� I� Ili _'_`- _ 'Ift I /�1. _ , ' \ Ir ' �' f- • C. KDTRRSKI - _-- � • • s AREA=9.2 ACRES _6 o Hu -,]MIN. ------ H`1_1zj III* / F. ;I NT �L6W�- I �/ I �y-yy-ytY / �j�. �' �� / \\ k� /I d' /r- ", ' r / i `(r a•�� r \1 , ■ ZLU %g LIE / �r ` _ _ .{�- - - IlJ,�-. - � - 7`i __" _ _, .:i%:' '1 ``\`o�" � I :��.QJ - O Q Q z —•- /PRE-DEVELOPED DA2B (SODTHEASTI: iiil� r 3\`;n'ii'I `.CN=80AREA= 7.�17'ACRES TC _-_�_�_ W -_-- 22.0 /dFQ' �IRIItiR� l���3'� ' ��� /'" i' ' `Fyi� 8 J J 41 _ - ---------'->; �t1 _=�' #L•'zis-s I " _ co W _JFLC*(F — _ _�_ "_ _ _ "���� _ _ `. iR �'i�, -�- -1 i1 ,3 �%'��� /��'. Z M a 0 'am LIE 111IT(�Ij,I� Ali ,r < q I 10 NJ Rg T SIITTYIOW.),LdU- F FLOP ' I\ a v CHANN `-11TF mot— _ I m I T� roe H8ET9n Es 5y �I- / e7(1) �p L LEGEND: PNPNNFP POST -DEVELOPMENT STORMWATER NARRATIVE: UNITS of aLALTM 0, OISTIRBANCE Z L� THE P ECAPT RED AND DUNNED IN THE TWOOUDRY P POINTS. ALL AREA CURRENTLY ORNNING TOOUTFALL3 WILL BUCAPTUREDAI RAINS EAIN THEONSREINLPOND. POST-0EVELOPED DA I:DRAIN$EA$T TO EXISTING INLETS IN OAK STREET GLINT W. a DRAINAGE DIVIDE O 'L POST -DEVELOPED DA 2A:DISTURBED, DETAINED AREA INSIDE OF THE LOO THAT GRAINS TO THE GOUTHE>ST TO Y S F LET i THE PROPOSED DRY POND THAT OUTFALIS TO THE EXISTING STREAM SCPLE 1"�B' POSTDEVELOPEDOA 28:UNDISTURBED. DUNNED AREA OUTSIDE OF THE LOD THAT DRAINS TO THE SOUTHEAST ME OF Lk. N' 4380 ,hp TO THE PROPOSED DRY PONDTHATgRFALL3 TO THE EXISTING STREAM 0 60' 12P .. y.. CONCENTRATE PATH WITr22 i • -�.'\' POST-DEVELOPEDDA2C'.DISTURBED. UNDETAINED AREA INSIDE OF THE LOD THAT DENNIS SOUTHEAST TO THE _ _ _ _ _ _ _ EXISTING STREAM. Y /0,VAL 4 — NNFHEE POSTOEVELOPMENTWIDCOVER 12 ow $J $ A� Gx�it� `� _ MANAGED TO PARCEL TO BE j DEVELOPED IN w FUTURE ��_—__— O ¢ PHASE G — TRANSITION _ OF FLOW — - -_ CHANNEL FLOW ' € 1 _ OF F •E f00' SHEET FLOW y_- _ _ _ _ T20f i 1. � \ ^ —1 � , r / _ 1 L o SHEET FLOW '\ 1 TRANSITION 91IO12020 OF FLOW`— v TYPE CIYP )= 5 POST -DEVELOPED � � P'bS'�V1 . _ I �� TRANSITION / SHALLOW � TRANSITION - �� G C GAMES OAi (WEST): TRANSITION OF FLOW ' 1`l CONCENTRATED ^` ` III m, r' - _ - OF FLOW eslcxeP er AREA=0.23 ACRES / `� �\�' SHALLOW OF FLOW \TYPE (TYP) `�\ FLOW(UNPAVED) ^ m r r / _ - TYPE(TYP) / • I CONCENTRATED , \ MANAGED _ • G SHIFFLETT y _ -. r r NRF _ _ ` ,h \ ✓ Y CN-81 \\ - E(TYP) 1 r PARCELTO BED FLOW NNPAVED) TVP �\I �/- _ • } T DEv>:LDPEDw / rKO-P5r `� \ M1 GKOTARSKT /--� �.P0ST DEVELOPED DA2A /` PHASE _ v I� __ / / / i - - DISTURBED -DETAINED / � , / l .'� \ r _!,� � � � � .t ♦ ♦ '- (SOUTHEASTI. r 1 I - I - _ � I : • I s nsD TRANSITION _ TC 12 ' OF FLOW I ' � T� - — • TYPE ,. _ . _� TC 12.5MIN. o • \__ �I� - r CONCENTRATED ' I PPRCUFF- i♦I I r i s FLOW (PAVED) MANAGED_ v L GBE�EEIjS-L1- F — • �( ��, 4�'� _ DEVELOPED IN �� ) — (�\I W z N `/ I �"� ' _-I _ _ FUTURE /I a' 1.' \ /r / _ r� $r `. - Z 3 / PHASE W Lu UNDSTURBED-DETANED(SOUTHEASTI T `-71 � �� \ r r l / A ��) / FFFIII / lrl ♦Y - - A c' - AREA T.IT ACRES MANAGEO Z S CN 80%�'%' TURF TC 19.9 MIN. DEVELOPS IN ,v_ DEVELOPED IN FUTURE - `• �') ,'-'��Ili ilii;� /, ��'��_ �. ��'�:Y• _ _-'__� � /, �_ '�� —y 1, - � _ _ _��QP z 8 I g e I -i i I "'�rLl• I �' / /' / / I / _ I --I z O' 3LZZ I 00. U -] Lu > Xj %-;-=s-t_�r it III\ TI- Lu Yy 11 I Lu r g W K , r I r I I r OILTFAtt '. ,r _ .% s E` I 38593 E � I I I I I 1 I xffr no. 5s / I Ili OA-Wei[ On Oaa Om Om Om Om w 9v DA3A-$oulM1eas[DeGinetl,Distuhetl BW 9M ]90 33T OW O.fO 135 01 DAz&soYmE,it DeumEa, unalimreee J.1J 3]S 1.9i 3tl 009 Odl 199 p Dnzc-soRmeaSromewmee, mimmee L SD OUWa PEAKF� A�S P.M.R. MARES BOURRIC-1 BUD ES DA_NWI1 DAM-Swment mbinea, Diswnaa DA3b5oNM1EW1 SAUD tl, U.di.rFAd 7.17 BAN AN BEENS al. u 1IMMO .F. u0w I..BALTIC. I O CCUMEMY1 .]D EDL AY OUTFALLI CHANNEL PROTECTION (ENERGY BALANCE) -I YR Qlreroer-OrvroraL S IF (QDYR PRe-Dm ARK rR PRe-Dml/RV1 re 'Orr -OEM On CPS s SUED Al 141 ARUDE I/ aM On CPS 5 6.40 US ON FLOOD PROTECTION-10 YR QmrRron Der TOut SQM rR Pna DSP ETA, CPS s ro s.as 13a CIE s 5.00 as OR OUTFALL2 CHANNEL PROTECTION (ENERGY BALANCE)-1 YR Qt rxeosr-Ocrmu. S IF r Q4rR as-D PARK rveo-oEv Qtrx x U.nruxmD R RV1.. PICKED. 930 CPS 5 EED 'I 83D A 0.68E I/ L12 . 6.93 9.30 CPS 5 1aS9aS OK FLOODPROTECTIOPI IOYR QP,ApACDromPC.A`Qmrx PRE Der 39.9E CIS 5 25.19CFS ♦ 18.35 3E95CF5 5 03.56aS OR ��•AR•aiTW.•' ' i j' •Af�f1j EAf®�� 1❖y V.W; �:Y yy%jH Mw I, ME S 1RF rvsuv. ANKAY C10119 HOST DE BAST EE Gurwtm AnM swn4nW. S REw cv(51 PC ODE WE WITS m TE — FUELI D' xuDxRY... mux ARAPS) TO UP ANTERED xDA.OI.n . ORIFICE TRASH RACK DETAIL DETAIL TANKER FROM MONTGOMERY COUNW.MD WATER RESOURCES SPECIFICATIONS DETENTION SYSTEM INSPECTION/MAINTENANCE SCHEDULE 1. INSPECT PIPE SYSTEM BOTH UPSTREAM AND DOWNSTREAM OF THE WEIR PLATE CONTROL STRUCTURE FOR SEDIMENT BUILD UP ON AYEARLY BASIS. 2. INSPECT WEIR PLATE CONTROL STRUCTURE FOR CLOGGED ORIFICES ON A YEARLY BASIS.IF ANY CONTROL ORIFICES ARE CLOGGED REMOVE DEBRIS 3. IF MEASURED SEDIMENT BUILD UP EXCEEDS 20% OF THE PIPE DIAMETER. THE SYSTEM SHALL BE CLEANED VIA A VACUUM TRUCK OR MANUAL METHODS. WATER QUALITY CALCULATIONS: SUMMARY FROM RUNOFF REDUCTION SPREAD SHEET FOR REDEVELOPMENT (SEE CALC. BOOK): B SOILS: D SOILS: LCPMEN B SOILS D SOILS 1.0 AC UNDISTURBED FOREST AND OPEN SPACE 2.61 AC TURF 0.67AD IMPERVIOUS O.BO AC UNDISTURBED FOREST AND OPEN SPACE 1.]9ACTURF SAME AC IMPERVIOUS O.W AC UNDISTURBED FOREST AND OPEN SPACE 3.12 AC TURF 111 AC IMPERVIOUS GOOAC UNDISTURBED FOREST AND OPEN SPACE 3.1`0 AC TURF IN AC IMPERVIOUS REONREDREMOVAL 3.1911,11 OWN EMISSION DINn PENOWERS, Dndl Y 5g $ qQ $ $ g i 3 _ 3 Y m PIE Orrun orerl3rr D O 2 1 DEAL 1 DOl lAb 21-1 DW 1 a10 1 1. IOU AD ABEL M1eeGm EDYI iE M DT 1W DAEtlD O.1 DOl SUPSO. BOl A10 8A CAMEI IED 1 ♦D 1 .0 1 CU CARD u.I DOV] 3'N 1 E. COM 1W tllMARA ® D [MARRIAGE D GRAS48URFACE 10-YR FLOW DEFTN n TAT. WR' P \ T BIDE SLOPES VART. SEE TPBLE CHANNEL SECTION A -A R Wee TOP OF STORAGE ELEV. B]1.11 _ _ S7 10YRWSE B]O.BR 2YRWSE 8890E ELEV. 6811.5 _IYRWSE env EYE STEEL PLATE HAI WUGEI ARY CIA CULVERT ELEV. WILD ELEV. KEEP 13OCWFICE ELEV, EMUS WEIR PLATE IN W CMP STORAGE SYSTEM NO SODM ONE CMP STORMWATER MANAGEMENT SYSTEM CORKETURNEEDHERMIN 3TH[WUNDAU."! AxDIR HEODIND SmxE MUST BE PREPEACY LLvuEO TO EuvanOM SHOWN ON 4. ARSENALS SHOWN BETAFEN PIPE RUNS ARE STANDARD AND WILL REFUSE SUFFIRIBIEW SPUR FOR MATHERIALP CEMENT AND CONDUCTION CONSIDERATIONS FOR SPACING WERACTROPID WILL NOT BE MIND UN�S5�EIN�LHRFORMA�ACKN�UDGESTMT�EDBIREGRE�ONWIUNDT OMPRO 5. YM IUAN0 EDoINGnu ERIRN55RHRURREEASEE<�EC IINI EPPOERPux3PNDMNgM WDx THE TES ED HEREIN, 6 TM PO4RMExTOEMA OEOMEMpMxE OVER THE ETUDE SYPM IS WxyOEREOA EASE WARRANT MACTRAW MTHESMEM15EOEArtOMNE xPA MEMix MEMORENOmmEMuGlM "V RE 5f\ERE wlxma IxaSn xuviM usEs cf c[el XG suE. 7, �� YOUTEMEARRE SUBBI TOGRACATER UAREAKERE TURN TYPICAL FRAUD RUN STEAM SEWER APPLACATIONSENOTTERE ORE ME PROMMATE U NMEMMx59M5TATCPRE55UxE BAKER PEREmMANCE R[OUREMEx UIRING AREm MORE arPFFRIITEEY ADDRESSES COME ttROMED PIPE RAdxuED WxH AN OPENTRADEDETR[ ENm KINANIMKMOZUMRIDESIDNEDUMHER51, 9.COxruT RICfaEuxEwESREPREfOmAIw Wk"VMWRH ONSNEEDOMME$nTM LWON (I AN IROM11 0sx[MOuIuq ERTce Orxrt N.s IFIMRVYI R'n¢aiE�a irml ECESPEATERM TYPICAL CROSS SECTION MfEM AI PER rvM lUAAowx oxrxrrwxv unussmMmvxsxOTSO nnixcssx.HuuTms.ixi.u,.Osswxnswx¢MexrsaumMnra. o u,Rxmn omux.xexeawarumavumrnexrsu.uwrsrxonnwuueUumo. RBEAT eunummusuiuiem IN REACCLAREEIIII IF WE PA. mwmmwoaxnorvmwm uunumawuvmcnsamiwnuw..mimeurnoxrmwomrun.cuwnmmcrunxu€ INERFUNCESEENO I'll zuomlMROMFAIL mmxws xquuE m• xsm HIT. EIARIOOMMIWMUx RO REAL AC -I MIECETICI YEN NECALIT ILLY AA I ELIH EU MA CI A,,.x,.oe<,�x xu�x�,IE�A xwrunsraoxrITx•nwuowMmaxH AM exemxcxvnxowxuUK. E' Uirtw manor xwwrcxnxr✓ruwwixFFEW ICw•AemurmuuiuAnWwnummrr LSEW IF ERitawox RuvxoIREWME D ,A z I PER 3a♦' Al HE AN ED MAIREA DUCCOLAU ARE AN 11111BACCE BUY,ESS RISER DETAIL — O"T PER AE -TE" USE EYE. EI CAR PAREAS aIFEVE GASKET DETAIL I- Mtver¢x®I ««. LnLTN p,id� CLINT W. 2: 8 4P LET n ..aea �e M1]/22 • `eSaON ALLE M.......0 am D 0 z 0 911012020 D By C. GAYNER CESIGNEDBY C SHIFRETT THEIXeD BY C. KOTARSRI SCALE I"= 30' W z LLu Q tea/ I..L m J 1 EL(1 W M M T� U a D Z cW LU W A7 At Z a W a 0 U7 AOF 38593 /7 IT I IF I 163� . 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KOTARSKI (PLATI �� '/i 1 A r 1 ii - A i I oT asce�es6rLR����� (� �* / ,1 /�� ��\� /� / T 3�-,�0' 'm ':'z • • sc.lF ` \ ` (PLnn����=```tan`'^ \ / i� \ f/\ F<U 9 <� '�\ - - uo`- /A_ A / )^3. -- -_ • /^=3o' y /f l '/� _ ` ISTAT�2F I /' I �'• /-- __ • - XASTFAN 3�ARSE PAVE NT FA' I � 22E UB • / CO/ 1 / //l / l / /r. j 30.578 I, o SAL �- ' L' // ^✓1 , ' / I " ; \% �i� l / -'G 220., 2 .PAR$FPAV64EMT .81 s GftavEL/ li I / �3e _ - ui % IT ^ '302 W Tel 5 BEPAVE 39J q y- I y , �AR /v�ENrl ,1 - � II F CR.CZET Q/ 'II \ � / / / I / / / / 1 0.2E �NE/T {YALC F([T �____ ''6 nl aol 1 e rl l I �' v o..T �/,\ / Lu GRAVKAREA +y/ /// \ 1/ _� - �- � /SFARSEAI MENT ,� / / /. _� A I ' i I ' I � c , > ___, All; 1l/ ,_ _ '�♦: �,'�S �m z a N/FLHARLES ft. 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HAS PO 456; O Tf-y rMPvs6Al.BzoA.cmeo6 - _ _ _ ' _ / _ - _ - _ _ _ _ _ - _ - WFPATTIEL.BABER_'l ¢� '_ \ _ / \ \-� r _ _ - - - _ _ _ ��c Rl ST PUL�ON 9 r y: O . 19BJ. PG 65Q / - \ y GRADE C TIENSE iFEES - ' / - - _ ¢ i - - l 1 -� ` ` _ �. _ I ON EASEMENT TIE TO EXISTING LOT B, 6LOCKR `� _ �+ '� ' �\ - _ `\ -_. 1f �I ' GULL OE_NSE_ ,\ BLUE MOTOR _ ff PANY$UBOIVISION4 LjW-i `. - �����- `v11\I `'�N6'ECORNEft� - , APPROXIMATE LEGEND: TM1IPIISBAz.P?OA;1W0 ;W ,I 11I .�•�"] �IJTND.B, -----" LGLArIDNOF,2' \ \ • \ ?I WF WILL=I JR, ANZ,TMPOS6A1dhb9011CD`�`5!` _� \ I �6'JBDENSETREES WATERLINE-- \. TERESAH BACK WF WILLIAMA. JR, AMO'-=� ` _ _ _ ` _ l O.B. 1fOB, PG. C11 2WD I--TERESAA BUCK p PmaaAz-Bsawl2ar_� ` TJAPOS(W10G-80-000A3 gE I }' _ I NYF PARKSIDEVILLAGE 'x c D8'96. ELI 3R, lP 11 D`s �I I ae 1108, ED e2f_ \Ib�'f N-JR.,allo� — -___` __________\\ . N, - 38593 E 1 ¢ , 1 I _ TREES - -�D�r IYNERSASSaLUTIOLd - _ _ gREq LOTIRBLOCKA Y31$bl I I D3i SXE NY LFL T) OB ifs G 1 rTlp 1 _SHED 55yy / / - I , /NC ` xffT no. 58 BLUERIOGEMOTOR 2 -F�- ¢� TDB f94, PG 6-`G88 _ �- ®P EEy pLpN COMPANYBUBDIVIBMNg OI j BLUE RIDGE MOTOR OROT12SLO3(PUTI \`R' N/FXIU MEIXUERN _ 1 I FLAT �- \ 5%(5) pE Fo GOT 11 BLOCKA (� _ L 200: DI308 RTM1ma1 ¢ $TA 1p .03 m TOP 68220 n n 202:DSS6ft Thme1 INV IN 675DUN) INVOUT6T5.W(20]) 100: EW-2-48-R, 2:1 Fill Slope $ STA 10g0.03 TOP 692.15 STA 10+35.31 TOP88080 i ($ eke Ej �z ��8i� a�5 yO INV IN BT2.]2(2IX1) 210: DI-1 STA 106397 INV IN 669.27(101) q¢Ojp O _ O a J 3 INV IN 674.05(2W( TOP 680.18 ¢n0 ) ¢0) INV OUT61252(201B) INVOUT6)599(209) 680 600 575 PROPOSED 875 GRADE MIN. XI$TING COVER an GRADE 870 "'MP S OLAOS f $Y$ M 665 Ot 665 Va Sac 0' RC W HGL 800 880 855 655 9+50 10,00 11+00 12g3 STR 100 - UGD PROFILE HORIZ SGPLE: 1--W VIEW SCALE: V=5 EXISTING - - / 595 GRADE // 695 880 S80 ;PRO-' 675 ' I HGL 6l5 �U� 6]0 6N BP CMP $0 sTON GE SYSTEM Fh5 F55 SOtA TB.yG OE 2586' OF 30" RCA W POP B90 w 9+50 10+03 11+00 12+CO 13M3 1.00 15+00 UGD - STR 504 PROFILE HORIZ SC .I-5P VENT SCALE: 1'=5 E93 6B3 PRO ED G E US m PROPOSED ASSWATER / E%I ING �3 SANITARY J- HGL PIPE 3-2 112• MIN. 63 6l5 199F O 0t OG 18"tR pp 03. 5% 13 ROP IS US SIR P% -1 8+50 10, 11M3 11+50 STR 202 -STR 210 PROFILE HORIZ SCALE: 1-50' VERT SCALE: 1'=5 NOTES I PROVIDE WT 5LIS FOR ALL MANHOLE STRUCTURES WITH HEIGHTS GREA�ER THAN 12. TO HAVE SM 01386ft Thmet $ o ^ ^^o STA 11M5.84 TOP6]9.0 260: AS Inch MI 2026:MK2 ee_ INV IN 8T3.23 (205) 21Y1B: MX-2 rINV E� m �`� H 6TA 10gJW : D1366fl T6�reI 220: DI3B6fl T6me[ STA 10+00.00 nnw $ INV OUT 673.13 STA 10+1].33 '`c]c�nm m&fin mr�e TOP66602 STA 10+99.89 216:DI-3B681Tme1 rINV STA N+]O.W TOP ]05.54 222DI-3B107A TN 1 TOP 60R 89 mp�ran �o 'N6: DI-366R Thma1 TOp. 59 gg INV IN B]]] 0(213) TOP BBO.4C [214INV STA 12+39.83 INV IN 688.40 STA 15+14.0] INVIN BZ2.52 (201) 6TA 11+33.08 IN IN BR.52 (301) nF3zZ� oFo= �n0 INV IN 6I618 (R11) INV IN �2.1](2P( TOP695.]5 (223) INV IN 89].68 TOP]W.51 INV IN B]1 Y8 (R016) o��zzp TOP 679.97 l IN 6]1.R8 (R9IS) iuv pp¢�___ Min INV CUT (201) IN B&i.08 (215( IWOUTCA2.0](213) IN 6BB.]](218) INV CUT 58B.5](21]( (221) INV OUT 68]]B(219) INV OUT 890.32 (221) INV OUT 669K](201A) tl¢ K gz zz INV OUT B]3.3](2W) 585 89 890 LWAMR 89 GRADE GRACE 685 685 SpNR RY SA Y PIPE 3AA PIPE BW / BW G E� / 675 i OF 8)5 5' �y12% 20t 120 RCP XGL 670 2. An 8 S ORAGE RAGE SYSTEM 665 PPS BW AN 655 ES 9+50 10,00 ll+00 12+03 13+00 STR 202A - STR 212 PROFILE NORM SCALE :1 =50' VERTSCPLE: 1'=5 710 EXISTING 710 ]05 / ]W OP. W TER INS 00 1.5 ryp PROP, DO G E / 696 / / US / 221 00' OF SA 4 ITARY t0 �, B" RCP PI E " 2' 14' ANIM SANITARY 1.W am 4.0.� t5a° PIPES SIX PROP . 605 WATER Q 6p5 LIN / MIN. HOL BW EPO 2A Of �y4 e�e 8]5 675 6]0 6ID p 700 89 695 690 690 HIS LGRADE 685 PROPOSED ENISTIN GRADE w B80 PPRO%. OCATION OF XGL STING ATER LINE 6]5 6]5 203 M B3.04'OF 28A6'OF 6]0 ry0" 04 15•FOP 1WRGP 870 865 885 560 660 9+50 10+00 11+00 12g3 13+00 14+00 15g3 10+00 9+50 10+60 11+03 12+00 12+50 STR 200 - STR 222 PROFILE STR 202B - STR 206 PROFILE HORIZSC4y)_:1 SY HORIZSCALE'. 1'� VERT SCALE'. 1'� VERT SCALE: V" 4,LTH ; ` 6Op y-L JP IFF C LINT u s: S F LET >� LION. O" Bll ]/32 .4'AL 6NG �N444NM rf E B ¢s Srva C 3�5a 3 y b25 x o � IQ $ p nr O N O p 911012020 COGAYNER ESIGNEDBY •• C.BSH]FFLETT • CCKFDB C.KOTAR5KY AS SHOWN W w OQ LL Q W B J_ 4 m > 0 E fy Z C a J=a O 1 w yi M 00 m O Maw Z ° M E1. O� a � 4. y' B' 1, 38593 >e s L �`�N P zo" 214: fP..W0 E[i DI366fl Tlhm SD2� .6W9120.A1030d) TBTA6O2��n 86�a$OaOFA�~=- 2 w v" STAIDM.W S9TOP 3 1 8$p{ m^m IINV0I1NT.S3 621](217) NV mopp.1$Ym gn_SaV Os z F z �i IN56] ]0831 IN ]622IN I NVOU3 bQ ayy ggRzz2 R. i'gg p I226 NvouT]os21(zzs) 0 p 700 BW 805 PROPOSED GRACE NO PROPOSED WATER EXISTING GRADE ee5 efts 1' MIN. SANITAR PIPER 5 689 890 215 444'OF HGL 15 RCP 00% 6]5 (I]5 WO Bi0 ,.MI Imo 11.W STR 214 - STR 216 PROFILE NORM SCALE: 1=50' VERT SCALE: 1'=5 F 232: DI-3B 8 fl lTmel STA IMOO.o3 TGPi19.ie my INV IN ]11.31(235) INV IN ]11.31 (233) O�nO INVOUF)11.21(231) ;IGOi 0 i30 EXISTING GRADE ]25 7211 PROPOSED GRACE ]20 720 ]15 715 1.5 PROP MIN. WATER LINE 110 L 710 IM 233I PE 1312 ".c OF 15 RCP RIF a, ]01 ]W 700 9.50 IND) 11.60 STR 232 - STR 234 PROFILE HORIZ SCALE:I -50' VERTSCALE: 1-=5 CIS 725 (STING RAGE _ 720 / 11 720 PROwAGS F LI E IS 715 PNOF 715 PR POSED NE G DE IS IN. .2' / / PROP/ OF 710 _ / WATER 1 237 710 _ LINE j,51 ANITARY M. OF OF SiFDP 6175% IPE 14-13 IS POP M 1'MIN. 1B1% ,05 1 OF 705 'MI J Spry pRy 225 HGL �0' PIPE 6iR " 2RS 1Q R4• RGP SANITARY PIPE 2]-10 ]00 �IISh ]00 SRGP y 895 L895 9.50 10.03 11.00 C$, Y Am'n _SmSmnJ i �`n22O -� 2g 12-M 13.D3 1M00 15-M 16. STR 220 - STR 238 PROFILE HORR SCALE: 1-S ' VERT SCALE: 1=5 Ep DFO�� ai /Y10 O O�O>S 0 ]30 T25 ]26 EXISTING GRADE PROPi ISED \ 720 \ ]21) PR 715 711 Lit E T PROP MIN. WAT 5 LINE 110 .IN 301 L MIN.]10 305 139.W'OF S 15"RC 301 1' HGL IS PCP @I. 3W g'{,IOF MIN ♦�1.00°A 62.02'OF TW 19"RCP �AAMJTARWM IF RCP ]05 PIPE 11-1 700 ]CO 34NITARY 'IPE 21-20 E-50 10g3 11.00 12.00 13g 1M00 STR 230 - STR 310 PROFILE HORIZSCALE: I--5P VERT SCALE: 1-S 1].00 om� 400'. ES-1 br 12 lmfl Pipe -8�m STA 10.11.23 ,�q TCP 69R.. INV IN NO.W(401) w¢QO g�Gz ]30 ]30 ]25 ]25 ]20 ]20 EXISTING PROPOSED GRADE GRADE 15 ]15 ]10 ]10 PRGP0SE0 WATER LINE ]05 ]05 44. OF SANITARY RCP PIPE 700 M 'S:v61 11-10 ]W 18-M 19.83 9.50 loM 11.00 STR 226 - STR 228 PROFILE HONESDALE: I--5P VERT SCALE:I =5 675 US 6T0 va PROPOSED GRADE 885 .STING W HGL BW S.19.36' 6. OF 1Y POP ®0.T1% S., 650 VM 945 SIR 9.50 1M00 II.w STR 400 - STR 402 PROFILE HOPE SCALE: 1-- ' VERT SCALE : 1�5 NOTES: 1. PROVIDE SAFETY SLAN FORALLMANHOLE STRUCTURES WITH HEIGHTS GREATER THAN IS. 2. ALL PROPOSED STRUCTURES TO HAVE IS INLETSHAPING A,LTH ; ` 6p y-L If CLINT W. {zu S F LET >� Z LION. OMI� Bll ]/22 MN0..... Om� �E �E rva VI €mz ¢sga y5� z nr � o N O p 911012020 COGAYNEF ESIGNEDBY •• G SHIFFLETF • Crcusoe C.KDTAR5K] • •-11n1F AS SHOWN W w OQ LL Q J W > B m 0 1 Hy Z � S J0 1 w is K � y Y Z P) M< M E Ou a. S f� E � E 38593 >p i L d,LTH ; 6A1+, 10OP% 1 +,5 10 FCLINT W. u S F LET > Lit n . Bll]/22 AA.S10.4'AL ENG ie* MNF44T... mV E rva ¢& ¢sSa C 3 35a H 04.E y b25 e o 24 r� p $ $� nr O N p O 911012020 C GAMER G SHIFFLETT •• • rcusoe C.CKOTAR5KI • mr N/A W Z w In W O m Q NO S: F 'o 1. PROVIDE BAFEtt BUB FORALL M4NHOLE STRUCTURES 12. WITH HEIGHTS GREATER THAN Q W a 1 2. ALL PROPOSED STRUUURES TO HAVE IS, NlE SHAPING 3 a 8 4 4 0 mzaa JoW9 I w U Co CO m Z i O O aQ Ln U 4$ S G :9 9R Ea loervo. kg y 38593 E 5R a STORM STRUCTURE TABLE BTRUCTUBEA TOP STRUCTURE HEIGHT DESCRIPTION 100 Ef8.60 3.84' EW-2-d8'Pipe-2a FiII BICPe 102 6]3.86 9.E6' 01-1 STORM STRUCTURE TABLE $TRUCTUREA TOP STRUCTUREHEIGHT DESCRIPTION 2W fi%.02 12.TT GO inch ManM1de 202A 869.]9 YYY ESi(a 30 inch Pipe 202 P02.15 9.04' 01-3BBftThr¢ai 202E 682.99 13.6G MH-2 21K W9.93 6.60 01-3BBfl Tllroel 208 8]9.9] 8.80 OI-386ftThrcel 2L9 E02.20 ]16' DI-3BBftThrm1 210 EP0.10 d.38' ON 212 6W.)8 11 ]4 01-3BBfl Throel 214 65U.I4 6.3T DI-3BBfl Tlrtoel 216 660.dd 5.E0' OL3B 12fl TM1met 218 EBS]5 ].CB' 01-3B6fl Thrm1 22T ]05.% T.]8' 01-3BBftTh M zzz ro5.w Tzz DL361onrM1lwl 224 )�.52 T.25' DI-3B6fl TM1roe1 226 713.39 Z18' OI-3B6fl IDrm1 228 713.39 6.59' OL3B 10fl TM1mal 230 718.82 8.98' MH-1 232 710.70 T.ST 01-3BBfl Throel 234 ]18]0 rW' 01-3B6fl Tlrtoel 236 ]91.63 Z4T OI-3B6fl IDrm1 238 ]20.63 ].1V 01-3B6ftThme1 302 ]18.50 ].PO' 01-3BBfl Throat 3W ]18.50 T.ID' 043B 12fl Thmal 306 T1].)4 T.CO' MH-1 300 718.53 6.96' OI-3B6n T1rtm1 310 718.53 6.34' DI-3B6M1Thrml STORM STRUCTURE TABLE $TRUCTUREN TOP STRUCTUREHEIGHT OE$CRIPTION 4W E6202 ESiM12 inch Pipe 402 68218 ESt 1p 121nM Plp¢ STORM STRUCTURE TABLE STRUCTURE TOP STRUCTUREHEIGHT DESCRIPTION 500 EE8.86 YYY ESi M151nM Plpe 5@B 674.00 9.14• DI-1 502A W5.09 10.3T MH-2 SOa BBd.52 nt0' STORM PIPE TABLE PIPEk DIA FROM -TO UPSTREAM INVERT DOWNSTREAM INVERT BLAPE LENGTH OEBCRIPTIIX! 101 48' 102-166 684.60 8802] U.]]% 9583 LF 481r¢II RCP STORM PIPE TABLE PIPER DIA FROM -TO UPSTREAM INVERT DMVXBTRFAY INVERT $LOPE LENGTH DESCRIPTION 601 1Y 402-4W 880.99 68688 B.]1% 19.381E 12 inch RCP STORM PIPE TABLE PIPER DIA FROM -TO UPSTREAM INVERT DOWNSTREAM INVERT SLOPE LENGTH DESCRIPTOR MIA 39' S6YA-5N EBf.B] 864.I1 1.00% 25.BB LF 30iMi RCP 501H 39' 502B-592A 6S5.W 6E5.0] 1.00% ]0.90 LF 30iMi RCP SOJ 26' SM-592B 6T.E0 EG5.96 3.96% 281.10 LF 26 i�M RCP STORM PIPE TABLE PIPER DIA FROM -TO UPSTREAM INVERT DOWNSTREAM INVERT ELOPE LENGTH DESCRIPTOR 261B 3P 292-262B 6]252 6]1.26 SL3% 22.89 LF SD Inch RCP 2111A 30" 202R-262A C69.]] fi6TCO t6.OJ% 1].33 LF 301ncM1 RCP 2% 30" 2W -262B 6i4.94 6]252 2W% 121.161E 301nCA RCP 293 15' NW-292 6]3.13 6]2.R OW% 63.W LF t51nc6 RCP 205 15' 208-20d 8]3.3] 6]3.23 050% 28.a6 LF 151nU RCP 20] 10' 200-202 8]50f 6]4.W 225% H.031F t81nU RCP 2� 16" 210-2� 6]5.99 W664 1.]5% 19.94 LF t81nc6 RCP 211 15' 212-2W 6]].55 6]6.19 2.12% 63.93 LF t51nc6 RCP 213 24^ 21d-200 682.0] 6n.10 d.eo% 99.89 LF 2a Inch RCP 215 15' 216-214 631.Bf 683.06 d.OJ% H.Ai IF t51nc6 RCP 21] 24' 213-210 686.6] 662.1] 5W% 129.941E 241nCA RCP 219 26' 220-216 69].]0 660.]] 3]5% 2I62I LF 24 incA RCP 221 18' 112-120 690.32 69].60 1.90% H.COIF 181nU RCP 123 24" 226-120 ]022] 699.60 2W% 116.0]IF 241ncA RCP 225 24' 226-220 ]D5.21 ]022] 1.]5% 225.t6 LF 241nCA RCP 22] 18' 228-226 ]06.80 ]06.50 050% ad.COIE t8 into RCP 129 24" 2iD-226 ]0].9f ]06.31 0]9% 20]]]LF 24 inM RCP 231 15' 232-L'A ]tt21 ]09.C6 1.01% 116.]11F t51nc6 RCP 233 15' 23G-232 ]tt.]5 ]11.31 1.90% M.W IF t51nc6 RCP 235 15' 236-232 ]ffi2t n1.3t 1.]6% 108.041E tSmcn RCP Li] 15' Zi0-236 ]t3.53 ]1J.31 OW% H.COIF t5 inc6 RCP 301 18' 302-230 ]O0.]B ]CB.M 1.95% 62.OJ LF i81nc6 RCP 30J 18' 3C4-302 ]08.20 ]CB.W 1.90% H.CO LF i81nc6 RCP 3W 15' 3O6-3M ]i0.]0 ]09.36 1.90% 139.N IF t5 inc5 RCP 30] 15' 3O0-3W ]tt5] ]10.04 1.90% ]3.02 LF t5 inc6 RCP 368 15' J10-300 ]t219 ]11.6] 1.90% 52.02 LF t51nc6 RCP L 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 0 ,-02400 -- Q \ Yaf 'NC \ A'EF �� ..Hq EROSION CONTROL LEGEND qi) PENCE\ p >sA � NGr � \ \ \ i � TH�aA N•F LOUNTV !r`AFLE `�NL. 0.6' J� �G\ � � \ BR �URL}g0 � 2V'GL DF4 RGIN R� RRRL RRRL � R� LIMT50FCLEA0.IHG RXDGMGING - OB0185. FG2 `�� l / `��� \� \\ � (� I OB ,oG 2BJ(PU) FE M�'aa. 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GAYNER rmv0s6azo1.B0.0Jo00 / l RuiNs \�v \ \ /CIS/ ' f ' _ is 'l `% 1 J / ��m \ - \_� , , 116 - IT FILCHED eY l VASSALOS ASPHALT P /,1 `712.8 ;23 \L/S- / "' / /CONCRETE SLA 7293L p2 G 0.8 435a PG 1B PARKING 1 \ \ '/� 3 J235 /' , I / / AS� p� / l `�O l �l , ` WAREHOUBE IT xEaxD ev OBA955, PG. f0, 1J / ( V1ll - / L> p / / 2 ,. (ASANOONEOI ^,_S ASE �/ „ 1 �\ / /- /�� \ ® ' J e �b'T ggl GLKOTARSKC 9F 628, /% 1 1 __ lI jIFT20. OCKBUICOING l J, / - ` I • • /PUTT A DB 4046. PL.4 . -?��11�l _ � (HAT)- vJI �'• �� 6i4 ��/_{ - \� / l / g C l/rb / . 3..-30, 1 I FLL/B i TEMPRV \ _ i %- �' > \ B'/ • / / srgT Gri•y jollETs _Tas'" �l l / n D7% 15 DC lr„ _ -r-� �F. 1✓ I( � � ( /r� Il SPARBE PAVEMENT N r5��^P�rF �m . 721.3 `/' Jl� � � '"'>' r mid I •� EXIST RAY /�ARSEPAVE�&T N/ , yzo- / l-l\ / /f. S nek�N�i,� 5 / i rt� / /','� 4 i /711,479 S�,peo /•�- Jzr`z/ co"I TTRnaEa I• `�._ /' I _ -Y . 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NB.J -'T�$e Ill ;� SOY $ I O 12 ANO HERBEl!j�TA l J1� / _ , _ W 1 TV 'nm'- O Lu p p / P GARMORO�TRU51/EEsII / = I Q TABOR PRESBYTERIAL OENSBTREEa T� .�09PI ' 03 T E CHURCH THE 056A2U1.0001 V' / / I F �( \0A / i �\ 1�F�i 9�, Q Y� E THESOUAR6 LLC "/ TH IX3' , - -- y ' f Z / DB 1770, PG. 361 084108. PG 31 , / '� /! \ .y__��4 p Lys O u i OR 145, PC 231I OB 3GJJ. PG 205 I �` / I - 1 /,-Bi ` ---- ��G,,G� R V0m ¢[ S (PLAT/ " LIMITB OF \ / I - -_� �� g_ / DB 30f3.PG f33 (PUTT p - _ - - 02 ` -, ��, �� $ _e Q I, II _ ! 3 (PARCEL 0.M/ yI 088SOAC DISTUABANC`E= 1 /I / j \, Y FEE- DO / / 11'Y \ - T ` « I �'/') Ct { I (PARCEL 0051 ,0.49 AC. /III R \1 I / _ _ _ _ y / ____-� ?p NOND)966 `�DI ma Zeta REFERENCE LINE -THIS SHEET y�y1- JJ 6Ti 1i �7WO I ;I u { Y 3 /GARAGE r /'� I I I I _ ' • p' - L EXIST RAN LjI TO T `-6AS .OB✓EPCO E9SF T I U 54 J �-'' I IrMP s6,4zazaAB6/00/ - __- 699.v �''"c,vo I EaOIVRRE ytC f3 I 0B 35p2. FG IPU UEN6E 6 1 II L.QPC "I ry/l r ( l / LOT OTLBC06KAI BCUE HIOGE MOTOR I £ �1_rEl��in 38553 $5 r i W / sXFEr ND € KEY PLIW o I SOI TYPE'" J' ¢�.ep"' / i HECz7---_____ PI 11 E_ L 12 do LTH m rioT OENfE TREES' F �- - --_____-____ TREES I _---- DENSE TREES \ B 2' Z 1 \ I A I 1 1 Qn 1 1\ `\ 9�a / ' / - - ' OE�TRRE$$ f' / - - _ - w _6B9'� ♦ - WENICHO CLINT T .m, �. , nos -� `11\'� Q, `` ' TREES\ ,'SOIL tYBE: - ♦ D c _ _ F u.. C 1`.I - 1 _ p B' / __ mEEs' _-' . fiezfi ♦ ae. z932 - annz Z\ \ C/NAVELAREA I 1` \ + 1 \ ` g 1 \ ` 1 Y ' J TD \\A$PXALi\ ' n28 iMP 059AN11- $\`` \ `ZOf_ I I / nBBas DRAINAGE DIVIDE FOR SEDIMENT BA BIN I/ G`` (�-(tw;' treiTr - - I KEY PLAN FAL `iY'a LRDZETNEW TOWN 1 J ' - 1 / \y _ _ _ _ O FtlA m ' \ \ ^�A ..TESDA .vu2r ��, `I \ �g I � � %I i, liars `+ _ __-- _O m n \ O645EE PG 223. 223/PLAT) $ / ' 1 __ '�{ __ __ _-6Bf O _ - y \ O B. 163, PG IDS 1.GOA1)� \ \ `I `\ `�Y I I 1 r (TREE$ ,,6 _ -' "�- R _ 4 - - 4 -e E `� L Jt36 \* \ / A1,760 Jf 4 -[ \` 1 IK I I $I 4M -` TS DC RESIDENCE __ ____666'i�'____ --I �_ �.} _ _ _ _ - _ _ _ _ TmP D66nz-paoo pasa0 (Y(l,.y Y'� ( NDONEVL' I--r 1 % r --C NIFMATMANN v \\ n13\I i1._ 1 LL`_1 I 1 II __ 1 r 1 -- \ - RUINS T 1 I _ / ITHEW _ - �TMP 6AL SEUSCHER O B. 3227. PG. 337 Jf4s \ \ J105 __' \ L r _6B4 N/FTA AL. BEUSCHER D.B. 3932,�PG. 621,693 aLL en _ _�__._\ 'llj 1 I _ 1 _�I�` 4 FOgp_ FIRS! �`eB1 -_S �_______ - _ Pc1 g T 710.1 I ` r' ,l/ I-'h_,/' /'- i_ 1 1- I __ EL J -� _____-_--_.5 - 9 63fa, 693(PL4 T1 LOT 0.9 ayfim ____ ______ ____ _ _ i _ __ _____> /I / ------- PRESS J� 0 � e � g^ I1 1 1 ee3e tora Lim/g`n/ Aa TREES J'Qa \\�\`- / - T�41 111 q r 1 \ \ I' O \ J APPRDXm r c E �___. __ Gr n q11 �� \ H TOP rR ` ETE%ISTING SAN rc I SEWER MANX 'I Ts Dc I 1 _(vearl $ �✓ \•_, 1 I sXED - - - - s- -WALK LI - I � \ I \ __ - - ----y/-_- SHED EROSION CONTROL LEGEND o ;VEP,GO REASE i) / f0o� I i I JiS'f5" `g18� _ \ 1 ,DENS EE _ wwTe 'p I -6v \ - b4 ` _ 6924 '01.) _ 1 / 9 UNITS OF CLEARING AND GRADING p /r `I / y iJ `��� `\I ` a \ 6 - ' - IGLINFORMATION 9/30/202p mb. / Q _/ I :__ 1 / o .x6'x, 6s1.z \ r.' \ 1 sg uN ° DRAAH BY ,6y'LI 9 / ,♦ 1 I - DMIMGE DrvIDE - 0.GAYNER __ - CIO ✓ 7_ _ _ -.1_ /' ' 6 1 i " ` EXISTING io3 _ _ �' / �' r/ ll ' _ 1 D se9.6 \ WETear{Ds I �n _ _ I _ O CO.G R.O. 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ANP - \ B d4 r ��� _ �E __ _ _ _ _ - ` 11 _ _ _ _'� _ ` _ _ ( j L T ._ - - \ 0 I `\ LMP 05�'AS 06-OO OCOA3 SIT MY PPPT 2.2 PR L ts. sources or rouutants, 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 on- 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 Ian wash waters per the plan Minimi_ation 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.) Michael Stumbaugh 401 McIntire Street Charlottesville, VA 22902 434-906-4459 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 1-800424-8802. 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 freauency 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 Albemarle County Combined Local TMDL Action Plan: Benthic TMDL for the Rivanna River and Bacteria TMDL for the Rivanna River Mainstem, North Fork Rivanna River, Preddy Creek and Tributaries, Meadow Creek, Mechums River, and Beaver Creek Watersheds For Special Condition (Part 11.13) of the 2ot8-2o23 VPDES General Permit for Small Municipal Separate Storm Sewer Systems VAR040074 prepared by: Albemarle County Environmental Services Division 401 McIntire Road Charlottesville, Virginia 22902 (434) 296-5816 www.albemarle.org/water April 30, 2020 Table of Contents Listof Acronyms............................................................................................................................................1 Introduction.................................................................................................................................................. 2 1. TMDL Project Name and EPA Approval Dates (Parts 11.6.3.a,b)...........................................................3 2. Pollutants Causing the Impairments.....................................................................................................3 2.1 Benthic TMDL Pollutant............................................................................................................3 2.2 Bacteria TMDL Pollutant...........................................................................................................5 3. Wasteload Allocations and Corresponding Percent Reductions (Part 11.B.3.c).....................................7 3.1 Sediment WLA...........................................................................................................................7 3.2 Bacteria WLA.............................................................................................................................7 4. Significant Sources of Pollutants of Concern Discharging to the MS4 (Part II.B.3.d) ...........................8 4.1 Significant Sources of Sediment................................................................................................8 4.2 Significant Sources of Bacteria..................................................................................................9 S. BMPs Designed to Reduce Pollutants of Concern (Part ILB.3.e - h)...................................................11 5.1 BMPs Designed to Reduce Sediment (Parts II.B.S).................................................................11 Lower Land Disturbance Thresholds (Part ILB.5.a3)....................................................................12 Completed and Proposed Structural BMPs and Stream Restorations (Part ILB.5.a.2).................12 5.2 Sediment Load Reduction Calculations (Part II.B.3.f) and Schedule of Anticipated Actions (Part II.B.3.h).......................................................................................................................................14 5.3 Sediment Load Reduction Monitoring....................................................................................1S 5.4 Management Strategies for Bacteria Reduction (Part II.B.4).................................................17 5.5 Methods to Assess Bacteria Reductions.................................................................................19 5.6 Outreach Strategy (Part II.B.3.g).............................................................................................21 6. Public Comment..................................................................................................................................22 7. Appendix: Supporting Documents......................................................................................................24 7.1 Four Seasons Stream Restoration Sediment Load Reduction Accounting....................................24 7.2 RiverRun Stream Restoration Sediment Load Reduction Accounting..........................................27 List of Acronyms BMP— Best Management Practice DEQ— Virginia Department of Environmental Quality GIS —Geographic Information Systems MS4— Municipal Separate Storm Sewer System POC — Pollutant of Concern RCA — Rivanna Conservation Alliance RSEP — Rivanna Stormwater Education Partnership TMDL— Total Maximum Daily Load WLA— Waste Load Allocation Albemarle County Local TMDL Action Plan Page 1 Introduction Albemarle County has prepared and updated this Local Total Maximum Daily Load (TMDL) Action Plan to address the "Local TMDL Special Condition" portion of its MS4 General Permit (Part 11.6). The specific contents included in this updated Action Plan, as required by the MS4 Permit Part 11.6.3, are listed below and addressed in respective sections of this Action Plan: a. The TMDL project name; b. The EPA approval date of the TMDL; c. The wasteload allocated to the permittee (individually or in aggregate), and the corresponding percent reduction, if applicable; d. Identification of the significant sources of the pollutants of concern discharging to the permittee's MS4 and that are not covered under a separate VPDES permit. For the purposes of this requirement, a significant source of pollutants means a discharge where the expected pollutant loading is greater than the average pollutant loading for the land use identified in the TMDL; e. The BMPs designed to reduce the pollutants of concern in accordance with Parts II B 4, B 5, and B 6; f. Any calculations required in accordance with Part II B 4, B 5, or B 6; g. For action plans developed in accordance with Part II B 4 and B 5, an outreach strategy to enhance the public's education (including employees) on methods to eliminate and reduce discharges of the pollutants; and h. A schedule of anticipated actions planned for implementation during this permit term. Albemarle County collaborated with the University of Virginia and the City of Charlottesville in preparation of this Action Plan. However, each entity has produced its own Action Plan. The County intends to implement this Action Plan through multiple permit cycles using an adaptive, iterative approach as progress is demonstrated toward achieving reductions necessary to meet the WLAs. While this Action Plan presents current and future practices intended to mitigate sediment and bacteria impairments described in this report, the County reserves the right to substitute/modify other projects and practices for the ones described in this report. Depending on the economic trajectory of County and Commonwealth funding availability over the permit cycle, the County is prepared to adjust to economic reality by shifting resources as necessary from capital projects to lower -cost community engagement and water resource protection initiatives. Albemarle County Local TMDL Action Plan —April 2020 Update Page 2 1. TMDL Project Name and EPA Approval Dates (Parts H.B.1a,b) The report titled Benthic TMDL Development for the Rivanna River Watershed (published March 2008) establishes the sediment TMDL for Albemarle County. This report was published in March of 2008 and was approved by the EPA on June 11, 2008. This report is henceforth referred to as the "Benthic TMDL Report." The report titled Bacteria TMDL Developmentfor the Rivanna River Mainstem, North Fork Rivanna River, Preddy Creek and Tributaries, Meadow Creek, Mechums River, and Beaver Creek Watersheds establishes an aggregate bacteria TMDL for E. Call. This report was published in March of 2008 and approved by the EPA on January 5, 2009. This report is henceforth referred to as "Bacteria TMDL Report." 2. Pollutants Causing the Impairments 2.1 Benthic TMDL Pollutant In 1996 and subsequently 2006, two adjacent segments of the Rivanna River were added to Virginia's 303(d) List of Impaired Waters for exceedance of water quality standards necessary to support aquatic life. The Rivanna River Benthic TMDL Report identified sedimentation caused by urban runoff as the most probable stressor in the Rivanna River benthic impaired segments. Embeddedness, or the degree to which sediment occupies spaces between cobbles and rocks in the streambed, and sediment deposition observed at monitoring stations were found to be in the suboptimal range for the support of aquatic life, as "buildup of sediment in the stream bed can drastically change the composition and availability of macroinvertebrate habitats and therefore can be a stressor for the benthic community" To address these impairments, a sediment TMDL is presented in the Benthic TMDL Report. The impaired reaches included on Virginia's 303(d) list and applicable to this TMDL report are VAV- H28R-01 and VAV-H29R-01. These reaches and the corresponding watershed are shown in Figure 2.1.1. Albemarle County Local TMDL Action Plan —April 2020 Update Page 3 „e,Af b Oman S 5Obler ;f 8 4 0 8 Miles VJgpe %d Legend :_iAlbemarle County Boundary — Albemarle County MS4 Area 303(d) Benthic Impairments VAV-H28R-01 VAV-H29R-01 OImpairement Watershed Figure 2.1.1. Benthic Impairment Reaches and Watershed Albemarle County Local TMDL Action Plan —April 2020 Update Page 4 2.2 Bacteria TMDL Pollutant As stated in the Bacteria TMDL Report, bacteria TMDLs are established for the Rivanna River mainstem (VAV-H28R-RVN01A00), the North Fork Rivanna River (VAV-H27R-RRN01A00), Preddy Creek and tributaries (VAV-H27R-PRD01A00), Meadow Creek (VAV-H28R-MWC01A00), Mechums River (VAV- H23R-MCM01A00), and Beaver Creek (VAV-H23R-BVR02A04). These waterbodies were added to Virginia's 303(d) List of Impaired waters between 1998 and 2006 for exceedance of the state's water quality standards for E. coli and for fecal coliform bacteria. When these waterbodies were first listed as impaired, the water quality standard was expressed in units of fecal coliform bacteria. The bacteria water quality standard is now expressed in units of E. coli because "there is a stronger correlation between the concentration of E. coli and the incidence of gastrointestinal illness than with fecal coliform" (Bacteria TMDL Report, page 1-7). The bacteria impaired reaches included on Virginia's 303(d) list and their corresponding watersheds are shown on Figure 2.2.1. Albemarle County Local TMDL Action Plan —April 2020 Update Page 5 z AraM RaEbnt Legend = Abel County MS4 Area 303(d)Impaired Reaches — VAV-H23R_BVR02A04, Beaver Creek —VAV-H28R_MWC01AOO, Meadow Creek VAV-H23R_MCM01A00, Mechums River — VAV-H27R_PRD01AO0, Freddy Creek —VAV-H28R_RVN01A00, Rivanna River — VAV-H27R_RRN01AO0, Rivanna River N. Fork Watershed Name Beaver Creek Meadow Creek -----; Mechums River Freddy Creek � - Rivanna River 8 4 0 8 Miles - ;Rivanna River, North Fork Figure 2.2.1. Bacteria Impairment Reaches and Watershed Albemarle County Local TMDL Action Plan —April 2020 Update Page 6 3. Wasteload Allocations and Corresponding Percent Reductions (Part 11.8.1c) Albemarle County has been assigned an individual wasteload allocation (WLA) for sediment and an aggregate WLA for bacteria. 3.1 Sediment WLA The Benthic TMDL Report estimates existing sediment loads and provides a WLA for the Albemarle County MS4 (Benthic TMDL Report, Table 7-2). Sediment allocations included in the Benthic TMDL Report include "loads from general stormwater permits issued to industrial facilities, domestic sewage facilities, mines/quarries, concrete facilities, car wash facilities, and construction sites within the MS4 area" in addition to instream erosion (Benthic TMDL Report, page 7-3). The existing and allocated loads assigned by the Benthic TMDL Report for the Albemarle County MS4 are summarized below in Table 3.1.1. It is worth noting that the Benthic TMDL Report estimated Albemarle County's MS4 area as a total of 20,984 acres (Table 2-9), whereas the County's subsequent mapping of its MS4 area revealed that the MS4 area contains a total regulated area of 7,169 acres. The County's MS4 mapping procedures are outlined in its 2"" Phase Chesapeake Bay TMDL Action Plan. Table 3.1.1. Sediment WLA for Albemarle County MS4 Permit MS4 Permit Land -based Instream Existing Total Allocated Percent Number Holder loads Erosion Load Load Reduction* (Ibs/day) (Ibs/day) (Ibs/day) (Ibs/day) VAR040074 Albemarle 1,606 4,729 6,335 2,576 59.3 County (*) The percent load reduction specified for M54s accounts for loads from all land sources including forested areas. 3.2 Bacteria WIA The Bacteria TMDL Report includes an aggregate WLA which addresses point sources in the City of Charlottesville, VDOT, the University of Virginia, Piedmont Virginia Community College, and the Albemarle County MS4 Area. The WLAs provided in the Bacteria TMDL Report do not distinguish between loads aggregated to MS4s and VPDES permitted facilities. The report also does not document precisely which land area was considered to be a part of the Albemarle County MS4. Notwithstanding, these WLAs are summarized in Table 3.2.1. Please note that the report indicates that MS4 areas contribute zero load to Preddy Creek and Mechums River. In addition, no land included within the County's MS4 drains to the impaired reach of Beaver Creek (as shown in Figure 2.2.1). Albemarle County Local TMDL Action Plan —April 2020 Update Page 7 Table 3.2.1. Aggregate E. coli WI -As for MS4s Impaired Percent Reduction WLA Reference Table (Bacteria WLA for MS4s (cfu/yr) Waterbody (%) TMDL Report) Rivanna 3.27 E+12 95% Table 5-4 River North Fork 5.10 E+11 95% Table 5-9 Rivanna River Preddy 0.00 E+00 Table:, Creek Meadow 3.83 E+12 95% Table 5-18 Creek Mechums 0.00 E+00 0% Table 5-22 River Beaver 2.20 E+10* 95% Table 5-27 Creek *Although the Bacteria TMDL Report lists MS4 areas as contributors to Beaver Creek, Beaver Creek does not currently receive drainage from any MS4 areas, as shown in Figure 2.2.1. 4. Significant Sources of Pollutants of Concern Discharging to the MS4 (Part 11.8.1 d) The General Permit (Part II.B.3.d) requires this Action Plan to include: Identification of the significant sources of the pollutants of concern (POCs) discharging to the permittee's 1AS4 and that are not covered under a separate VPDES permit. For the purposes of this requirement, a significant source of pollutants means a discharge where the expected pollutant loading is greater than the average pollutant loading for the land use identified in the TMDL. This section of the Action Plan identifies features and land uses within the MS4 area that are considered significant sources of sediment and bacteria. 4.1 Significant Sources of Sediment While the Benthic TMDL Report identifies that instream erosion contributes approximately 75% of sediment loads to the benthic-impaired reach of the Rivanna, certain areas of severe stream and channel erosion contribute pollutant loadings expected to be greater than the average pollutant loading for the instream erosion rate identified in the TMDL. Through a program to assess and improve drainage infrastructure, Albemarle County is working toward identifying and prioritizing individual stream and channel reaches where instream erosion contributes loads that are significantly greater than average. Additionally, construction sites remain a significant contributor to sediment loads. The Benthic TMDL Report indicated that 5 construction permits existed at the time of Report development, all with existing and allocated loads of 1,874 Ibs/day (Benthic TMDL Report Table 7-4). However, the number of active construction sites is constantly changing within Albemarle County, so sediment contributions from this general source will therefore occasionally be greater than the allocated load based on five construction sites included in the Benthic TMDL Report. While erosion and sediment control measures are highly effective for controlling smaller storm events, the increasing frequency of more extreme Albemarle County Local TMDL Action Plan —April 2020 Update Page 8 precipitation events are believed to be causing increased frequency of significant sources of sediment discharges from construction sites beyond the loading rate identified in the TMDL. Because much of the County's urban area was developed prior to stringent stormwater quality and quantity control requirements, runoff from many developed areas in the County receives no stormwater treatment. Concentrated impervious and turf areas that are not treated by BMPs are expected to contribute greater than average sediment loading rates. These untreated areas contribute sediment in two primary ways; areas with runoff that is not collected by water quality BMPs will fail to reduce land - based sediment loads, and any runoff that is not detained by water quantity BMPs (such as traditional detention basins) is expected to contribute greater peak stormflow volume and therefore contribute to greaterinstream erosion. 4.2 Significant Sources of Bacteria Because both wildlife and pets are recognized as sources of bacteria into bacterially impaired waters (Bacteria TMDL Report Pages 3-28 and 3-30), County staff anticipate that the rate of bacteria loading from County parks may be greater than the average bacteria loading for similar land uses identified in the TMDL. There are two County parks that intersect the MS4 area, and both allow pets, provide wildlife habitat, and contain MS4 outfalls. These properties are depicted relative to local TMDL watersheds and County MS4 Boundaries in Figure 4.2.1. However, it is currently unknown which, if any, of these properties have a pollutant loading greater than the average pollutant loading for the land use identified in the TMDL. Additional possibly significant sources of bacteria are summarized in Table 4.2.1. Albemarle County Local TMDL Action Plan —April 2020 Update Page 9 Legend r u� iCounty Parks intersecting MS4 Bacteria —Watersheds ret 2018 303(d) Impaired Reaches a• VAV-H23R BVR02A04 — VAV-H28R MWC01A00 — VAV-H23R MCM01A00 V • 1Farlysville VAV-H27R_PRD01A00 VAV-H28R RVN01A00 — VAV-H27R RRN01A00 Local TMDLs Watershed Name Beaver Creek Meadow Creek Hol Mechums River p0 Freddy Creek •r Rivanna River Rivanna River, North Fork u' - A t emade County M84 Area Charlotte V. Humphris Park '• ' , ••••--•• ,..- �)Yy Rd Darden Towe Park • Ri�hm luG 'r •rer. 2 1 0 2 Miles Figure 4.2.1. Potentially significant sources of bacteria Albemarle County Local TMDL Action Plan —April 2020 Update Page 10 Table 4.2.1. Potentially significant sources of bacteria from facilities of concern Source Bacteria Contribution Description 00009 Domestic Pets: County Parks & Dog Parks, especially those with designated dog parks, tend to be places that receive a Parks higher load of fecal matter from dogs. The County's MS4 area contains one park that is located within the MS4 area and also drains to the impaired reach of the Rivanna River —Charlotte Humphris Park. Vet clinics or dog Any programs or institutions which provide sufficient time outside for pets (typically boarding programs dogs) may contribute significant loads of bacteria via pet waste, if waste is not properly collected and disposed. Urban Wildlife/Birds: Ponds/lakes/ Any ponds and streams that attract wildlife (typically geese) and subsequently drain streams which into the MS4 may provide significant sources of bacteria. attract wildlife Unsecured food Any unsecured food waste or trash may attract wildlife and promote greater waste and trash contributions of bacteria contamination. Illicit connections or illicit discharges: Leaking sanitary Any leaking sewer lines may contribute human waste and bacteria loads to the MS4 sewer lines area, especially if there is a cross connection with storm sewer pipes. Failing septic Although not expected to be numerous, these sources may individually contribute systems, and human waste and bacteria loads to the MS4 area. outhouses Other Sources: Urban areas with Urban areas which do not drain to water quality BMPs likely contribute higher loading no water quality of bacteria from pet and animal waste than other areas which first drain to water treatment quality BMPs1. S. BMPs Designed to Reduce Pollutants of Concern (Part 11.8.3.e - h) This section of the Action Plan describes County BMPs to reduce sediment and bacteria pollution in line with General Permit Part 11.B.3.e, part 11.13.4 (Bacteria TMDL) and Part 11.B.5 (Local Sediment, phosphorus, and nitrogen TMDLs). This section also provides sediment reduction calculations, outreach strategies, and a schedule of anticipated milestones, as respectively required by General Permit Part 11.B.3.f through h. 5.1 BMPs Designed to Reduce Sediment (Parts 11.11.5) Albemarle County has utilized and intends to utilize BMPs approved by the Chesapeake Bay Program in addition to other measures to reduce sediment loads into the benthic-impaired reach of the Rivanna River (General Permit Part 11.B.5.a). This section summarizes installed and planned BMPs to reduce 1 Hathaway et al., 2009. Indicator Bacteria Removal in Storm -Water Best Management Practices in Charlotte, North Carolina. Journal of Environmental Engineering Vol. 135, Issue 12. Albemarle County Local TMDL Action Plan —April 2020 Update Page 11 sediment loads, presents calculations for sediment load removal (General Permit Part 11.B.5.c), and presents a schedule of anticipated actions planned (General Permit Part 11.6.1h). Lower Land Disturbance Thresholds (Part II.B.S.a.3) In addition to structural BMPs, Albemarle County reduces sediment loads by utilizing a lower land disturbance threshold than required under Virginia Stormwater Management and Erosion and Sediment Control Regulations. Chapter 17 of the County Code — known as the Water Protection Ordinance (WPO) — is the primary legal mechanism through which the County regulates land disturbing activities, land development, illicit discharges, and impacts to riparian areas and other natural resources. Among many measures designed to reduce erosion and sediment pollution, the WPO includes a disturbance threshold for small construction activities of 10,000 square feet, as opposed to 1 acre required by Virginia's regulatory requirements. In fact, in summer 2020, the Albemarle County Board of Supervisors is scheduled to consider lowering the threshold even further to 2,500 square feet. Completed and Proposed Structural BMPs and Stream Restorations (Part II.B.S.a.2) Since 2011 Albemarle County has constructed three stormwater retrofits and three stream restoration projects within the drainage area of the benthic-impaired reach of the Rivanna River. The location of these BMPs is depicted in Figure 5.1.1. They are described in greater detail in the County's Phase II Chesapeake Bay TMDL Action Plan, but additional detail and load removal calculations are also provided in Section 5.2 of this Action Plan. In addition to already -completed BMPs, Albemarle County intends to construct additional Chesapeake Bay Program approved stormwater retrofits and stream restorations during the current permit cycle in order to reduce sediment loads into the Rivanna River and the Chesapeake Bay. The County has received a DEQ Stormwater Local Assistance Fund (SLAF) Grant for the Rio Hill project, and the County has applied for a SLAF Grant for the Biscuit Run Project described in this report. Please note that, while the County anticipates funding to be available based on current appropriations, the County cannot guarantee the availability of funding to construct these projects per the anticipated schedule provided below in Table 5.2.2. In addition, the County reserves the right to modify the projects proposed in Table 5.2.2 or substitute them for other projects and/or practices. Albemarle County Local TMDL Action Plan —April 2020 Update Page 12 Rio Hill Constructed Wetland Four Seasons Stream Restoration Church Road r Constructed Wetlands Biscuit Run Stream Restoration Legend t,a Albemarle County Boundary R.� - Albemarle County MS4 Area Major streams J BMP Status • Completed • Proposed 303(d) Benthie Impairments ennone VAV-H28R-01 — VAV-H29R-01 f_J1.5 Woodbrook Lagoon Constructed Wetland Chapel Hill Stream Restoratin RiverRun Stream Restoration J 0.75 0 1.5 Miles Figure 5.1.1. Completed and Proposed Structural BMPs for Sediment Removal Albemarle County Local TMDL Action Plan —April 2020 Update Page 13 5.2 Sediment Load Reduction Calculations (Part 11.B3.f) and Schedule of Anticipated Actions (Part II.B.1 h) The County has calculated sediment load reductions achieved through stream restoration projects and structural BMPs prior to this report in addition to reductions anticipated during the current permit cycle. Load reductions were calculated utilizing the Chesapeake Bay TMDL Action Plan Guidance Document published by DEQ (Guidance Memo No. 15-2005), with the exception of the land -based sediment loading rates. DEQ staff have indicated that it is not appropriate to use the edge of stream sediment loading rates provided in the Chesapeake Bay TMDL Action Plan Guidance Document Table 2a, as these loading rates reflect average sediment delivery into the Chesapeake Bay (not the Rivanna River) as a function of land use type. As a result, DEQ staff instructed Albemarle County staff that we may use a generalized loading rate of 0.3lbs/day/acre to model land -based sediment loads and subsequent load reductions toward achieving the WLA2. The loading rate of 0.3 Ibs/day/acre is the average loading rate per acre for Albemarle County, the City of Charlottesville, and UVA MS4 areas presented in the Benthic TMDL Report. Calculations for sediment load reductions from the structural BMPs and the stream restoration projects described in section 5.1 are presented below in Tables 5.2.1 and 5.2.2. Table 5.2.1. Sediment load reduction calculations for completed and proposed Stream Restorations Year Installed Acres Sediment removed Project Name / anticipated Lat Long Treated Length (LF) (Ib/yr) RiverRun Stream 2019 38.056 -78.454 26.6 650 202,3601 Restoration Chapel Hills Stream 2019 38.072 -78.475 73.0 1,278 57,3572 Restoration Four Seasons Stream 2015 38.082 -78.487 12.6 360 92,000' Restoration Phased Biscuit Run Stream Project - Restoration Design 37.9954 -78.5221 7,680 1,000 44,880' (Proposed) Commencing: FY 2021 'Stream restoration sediment removal calculations provided in Appendix. 'Stream restoration sediment removal calculations utilize Interim Removal Rate Per Linear Foot of 44.88 Ibs/day' Calculations for the removal of sediment from structural BMPs are presented below in Table 5.2.2. Sediment load reduction was modeled pursuant to the Chesapeake Bay TMDL Action Plan Guidance Document, with the exception that a uniform loading rate of 0.3 lb/acre/clay was used to calculate z Email from Tara Seiber, DEQ Valley Region TMDL Coordinator, December 9, 2015 1 Berg et al., 2014. Recommendations of the Expert Panel to Define Removal Rates for Individual Stream Restoration Projects. Tom Schueler and Bill Stack, Chesapeake Stormwater Network. Albemarle County Local TMDL Action Plan —April 2020 Update Page 14 sediment loads entering these facilities. Removal rates for Woodbrook Lagoon and the County Office Building Biofilter were calculated using the stormwater treatment / runoff reduction curves presented in the Recommendations of the Expert Panel to Define Removal Rates for Urban Stormwater Retrofit Projects'. Removal rates for the Church Road Constructed Wetlands were calculated using Chesapeake Bay Program Established Efficiencies'. Additional details regarding the sediment removal efficiencies of these BMPs are provided in Albemarle County's Chesapeake Bay TMDL Action Plan, which was submitted on October of 2019. Table 5.2.2. Sediment load reduction calculations for completed and proposed sediment -reduction BMPs Total Year Sediment Sediment Sediment Acres Sediment Installed / Lat Long Removal Removal Removal Treated Load anticipated Rate (%) (Ibs/day) (Ibs/yr) Project Name (lb/day) Church Road Constructed 2015 38.073 -78.477 68.4 20.52 51.0% 10.46 3,821.86 Wetlands Woodbrook Lagoon 2013 38.036 -78.482 254 73.71 14.8% 10.94 3,996.62 Constructed Wetlands County Office Building (COB) 2011 38.083 -78.465 2.11 0.63 73.0% 0.46 168.75 Biofilter Rio Hill Construction Constructed Complete: FY 38.087 -78.472 71.97 21.59 54% 11.66 4,258.82 Wetlands 2021 (Proposed) 5.3 Sediment Load Reduction Monitoring In addition to calculating sediment reductions, Albemarle County continues to track the condition of the impaired reaches and the condition of major tributaries flowing into the reaches through ongoing support of the StreamWatch monitoring program, now a program of the Rivanna Conservation Alliance (RCA). With financial support from Albemarle County, StreamWatch has collected Level III benthic data at sites in and near the impaired reaches for over a decade. The quality of Level III data is on par with DEQ's own data and is accepted by DEQ for listing and de -listing purposes. The StreamWatch dataset helped prompt the listing of VAV-H29R-01. StreamWatch data collected in the impaired reaches over a IS -year period demonstrate relatively persistent benthic impairment. Figure 5.3.1 displays multimetric benthic index scores from all samples at two representative sites on the Rivanna River, collected as far back as 2004. Scores lower than 60 (red line in figures) indicate impairment. To be de -listed, scores need to exceed 60 for five years with minimal 4 Bahr et al., 2012. Recommendations of the Expert Panel to Define Removal Rates for Urban Stormwater Retrofit Projects. Prepared by Tom Schueler and Cecilia Lane, Chesapeake Stormwater Network. 'Chesapeake Bay TMDL Action Plan Guidance Document published by DEQ (Guidance Memo No. 15-2005), Appendix V.C. Albemarle County Local TMDL Action Plan —April 2020 Update Page 15 exceptions. As shown, benthic scores from individual samples sometime meet the standard, but the overall pattern does not. Rivanna @ Darden Towe (VAV-H28R-01) - 41 benthic samples - 2004 through 2019 80 70 supporting Ell 50 non -supporting 40 30 20 00� OOy 000 00^ 00� 00� Oti0 O,� O,ry Otis Otib O,� O,O Oti^ O,$ O,O Rivanna @ Milton (VAV-H29R-01) - 39 benthic samples - 2004 through 2019 80 70 supporting T 50 non -supporting 40 30 20 00N OOy 006 00^ 0(,0 000 O~O O~~ 01� 01� 01t� 01y 010 01^ 010 01C) Figure 5.3.1. Multimetric benthic index scores at impaired reaches It is also worth noting the condition of waters flowing into the impaired reaches. VAV-H28R-01 is formed at the confluence of the North and South Forks of the Rivanna River. As shown in Table 5.3.1, average benthic scores for these two streams suggest marginal and sub -standard conditions. The North Fork Rivanna River might support the aquatic life standard; the larger South Fork definitely does not. Downstream of the confluence, urbanization increases. The effects of urban land use are reflected in average scores indicative of severe impairment in Meadow Creek and Moores Creek. These streams contribute polluted water and flashy flows to the subject reaches of the Rivanna. They also indicate an intensity of urban land use that directly impacts the Rivanna and that cannot easily be mitigated. Albemarle County Local TMDL Action Plan —April 2020 Update Page 16 Table 5.3.1- Benthic conditions in major tributaries of impaired reaches of the Rivanna River Average Site/Stream samples benthic Condition score North Fork @ Forks of Rivanna 26 60.9 Good to Fair (Borderline supporting) South Fork @ Forks of Rivanna 37 47.3 Fair (Non -supporting) Meadow Creek @ Locust Lane Court 29 28.7 Poor (Non -supporting) Moores Creek @ Woolen Mills 24 27.7 P (Non -supporting) 5.4 Management Strategies for Bacteria Reduction (Part 11.8.4) This section of the Action Plan addresses MS4 permit Part 11.6.4, which requires that, as an approved VSMP authority, the County select and implement at least three of the strategies listed in Table 5 of the permit document. Table 5.4.1 below lists strategies that the County is currently implementing (or will implement in the future) to help reduce or mitigate significant sources of bacteria in the MS4 area. These strategies correspond to the types of bacteria sources described earlier in this Action Plan. Other strategies will also be implemented as additional opportunities and needs become evident. Unless otherwise noted in the table, all of these activities are on -going. Albemarle County Local TMDL Action Plan —April 2020 Update Page 17 Table 5.4.1. Strategies for Bacteria Reduction Strategy Strategy Description Domestic Pets: Leash ordinance A new County ordinance (Sec. 4-225) requires that dogs be on a leash when not on the owner's property. This will increase the likelihood that an owner will notice when his/her dog defecates and thus increase the likelihood that she/he will pick up and dispose of the pet waste. Pet waste receptacles The County's parks have receptacles into which dog owners are asked to dispose of at parks their pet's waste. Pet waste bags are also provided at designated dog parks. Urban Wildlife/Birds: Signage against County -owned stormwater wet ponds in the MS4 area are posted with signs feeding wildlife prohibiting the feeding of wildlife. This is to reduce the potential numbers of birds and other animals that would otherwise be attracted to those ponds. Trash removal from At one of its stormwater wet ponds that receives a high volume of trash from an stormwater ponds adjacent shopping center, the County has installed a floating boom to collect floatables. The trash is removed regularly throughout the year, reducing the trash load downstream — a potential attractant of wildlife to streams. Carcass removal Virginia Department of Transportation removes animal carcasses from roadways — a potential bacteria source and wildlife attractant to impervious road surfaces. Illicit connections or illicit discharges: Detection and Albemarle County's MS4 staff is currently conducting video assessment of the elimination of leaking County's storm sewer systems, which will help identify cross -connections with the sanitary sewers and sanitary sewer system. MS4 staff will also start using enhanced illicit discharge cross -connections detection and outfall screening methodologies to identify sewage leaks, starting in FY2021. Septic system The Thomas Jefferson Soil and Water Conservation District provides cost -share maintenance funding for septic system maintenance and replacement. While current funding is available in the Tye River and Hardware River watersheds (outside of the MS4 area), funding will likely be available to septic system owners within the County's MS4 area at some point in the future. Other Sources: Stormwater The County intends to construct stormwater management retrofits in areas of the management in areas M54 that currently receive little to no water quality treatment, including those with limited water effective at removing bacteria. Some of these retrofits will be new structures while quality treatment others will be water quality enhancements of existing stormwater flow control practices. See Table 5.2.2 for a list of completed and anticipated retrofits and anticipated schedules. These practices can reduce bacteria in addition to sediment. Septage treatment for Rivanna Water and Sewer Authority accepts septage from RVs, motorhomes, recreational vehicles campers, and charter buses at its wastewater treatment facility at no cost. This reduces the likelihood of raw septage being improperly disposed of in waterways or on land. Enhanced Many of the County's stormwater management facilities are maintained in such a maintenance of way as to provide a functional ecosystem that can process bacteria from wildlife stormwater facilities and stormwater sources. This includes strategies to maintain plant diversity, reduce invasive species, and provide for floodplain and wetland functionality. Albemarle County Local TMDL Action Plan —April 2020 Update Page 18 5.5 Methods to Assess Bacteria Reductions Instead of modeling bacteria reductions, Albemarle County plans to track progress of bacteria reductions in partnership with the Rivanna Conservation Alliance's Stream Watch program. In 2012, StreamWatch staff and volunteers began monitoring e. coli levels once per month (in general) using the Level II Coliscan© Easygel method. In 2018, RCA then started collecting bacteria data using the Level III ColilertTM' process —a much more precise method. Figure 5.5.1 shows locations of ongoing bacteria sampling stations relative to impaired reaches and the Albemarle County MS4 boundary. All these stations are operated by RCA. Bacteria monitoring sites MWC13, RVN09, and RVN11 fall within the area of interest to the bacteria portion of this TMDL Action Plan. E. coli data from these three locations especially will be used to assess the effectiveness of this Action Plan in reducing the discharge of bacteria from the MS4 area. Albemarle County Local TMDL Action Plan —April 2020 Update Page 19 e., XLC01 XLDO3 LDG03 LD1,01 RCK02 MSV05 r Legend RC®A Bacteria Sampling Sites =x 303(d) Impaired Reaches — VAV-H23R_BVR02A04, Beaver Creek — VAV-H28R_MWC01A00, Meadow Creek e,s un Fan VAV-H23R_MCM01A00, Mechums River VAV-H27R_PRD01 A00, Preddy Creek VAV-H28R_RVN01A00, Rivanna River VAV-H27R_RRN01A00, Rivenna River N. Fork Watershed Name ---- ; Beaver Creek Meadow Creek -----; Mechums River _Reddy Creek r..... a� f Rivanne River • ; Rivanne River, North Fork 0.75 0 1.5 MII - Alba made County MS4 Area Figure 5.5.1. Rivanna Conservation Alliance (formerly StreamWatch) Bacteria Sampling Locations Albemarle County Local TMDL Action Plan —April 2020 Update Page 20 5.6 Outreach Strategy (Part 11.8.3.g) This section of the Action Plan addresses strategies to enhance outreach and education for the public and County employees on methods to eliminate and reduce discharges of sediment and bacteria. Albemarle County is a sponsor and active participant of the Rivanna Stormwater Education Partnership (www.rivanna-stormwater.org, RSEP), which is a collaboration between local MS4 permittees to promote education and outreach regarding local stormwater issues, including sediment and bacteria impaired waterbodies. As a group, RSEP developed an education and outreach plan for the 2018-2023 MS4 permit cycle. Table 5.6.1. lists all the activities in that plan that are relevant to sediment and/or bacteria pollution, along with the anticipated frequency of each. Table 5.6.1.Outreach & Education Strategies for the Public Strategy Time Frame Relevant Examples Anticipated Anticipated Relevant Message(s) POC(s) Frequency Written Spring Pick up After Your Pets: Animal waste that is washed off Materials Two or Three of lawns and sidewalks sends harmful bacteria into the Bacteria Utility Bill Inserts times during storm drain system and into streams and rivers, creating permit cycle problems for swimmers and fish We all prefer healthy streams and lakes ... but most of our local waters are somewhat polluted. When it rains, Media Materials pollution is carried directly into streams by runoff from Charlottesville Winter parking lots, streets, and lawns. Here's what YOU can do Bacteria Public Access Once during to reduce pollution: (one) pick up after your pet, (two) Sediment Station PSAs Permit cycle don't over -fertilize your lawn, and (three) capture the water from your rooftop in a rain barrel ... or in a rain garden. Do your part to keep our streams clean and healthy. Visit Rivanna-stormwater.org. While being good to your pet, don't be bad to the river. Media Materials Fall or Spring Every time it rains, runoff from your lawn carries bacteria Cville Weekly Annually and other organisms from your pet's waste into local Bacteria Ads streams. Dispose of your pet's waste properly by bagging it and throwing it away. Pet waste commonly contains bacteria and parasites harmful to humans and other pets. Waste left on trails, sidewalks and grassy areas can wash into creeks and Summer lakes, harming aquatic life and making the water unsafe Media Materials Once during for swimming and wading. By picking up after dogs and Bacteria Radio Ads permit cycle cats, you can improve local water quality and keep your community safer! Remember: Always scoop pet waste and dispose of it properly by throwing it in the trash, flushing it down the toilet or composting it with a pet waste composter. Alternative Spring Hand out magnets regarding cigarette butt litter, picking Materials Once during up pet waste, and proper car washing at Earth Week or Bacteria Magnets permit cycle other tabling events Alternative Spring Hand out stickers with stormwater focused messaging at Bacteria Materials Once during Earth Week or other tabling events Sediment Stickers permit cycle Albemarle County Local TMDL Action Plan —April 2020 Update Page 21 Media Materials Provide stormwater focused social media content to Twice Yearly Bacteria Social Media existing local Facebook pages or other social media Annually Sediment Promotion outlets. Share stormwater video online. Applicable County employees undergo periodic training— either internally or externally— related to various MS4 functions. Many of the training topics relate to sediment and bacteria reduction. Table 5.6.2 below largely reflects the employee training plan from the County's 2018 — 2023 M54 Program Plan, with the addition of stream restoration maintenance which is related to sediment reduction. The frequency of these trainings is also included in the table. Table 5.6.2.Outreach for County Employees Good Enhanced Training (for applicable staff) Department Housekeeping/ Stream Receiving Pollution Restoration spill Training Targeted Staff Prevention Maintenance Response VA ESC Frequency: biennial To maintain As needed To maintain To maintain certification certification certification • building maintenance • grounds management Public Schools • custodians Building Services •mechanics x x • bus drivers • other field staff • E&S control inspectors Community Development • building inspectors x x • zoning inspectors Community Emergency • all staff x x Response Team Emergency Communications • all staff x Center Fire & Rescue • all staff x x • building maintenance Facilities and • grounds management Environmental x x x • custodians Services • project managers Parks and • all staff x x Recreation Police • all staff x Purchasing • all staff x Social Services • field staff x 6. Public Comment On April 15, 2020, Albemarle County made a draft of this Action Plan available on its website for public review and comment, as required by Part II.B.7 in the General Permit. As of the submission of this Action Plan, the County has not received any public comments. Albemarle County Local TMDL Action Plan —April 2020 Update Page 22 Albemarle County Local TMDL Action Plan —April 2020 Update Page 23 7. Appendix: Supporting Documents 7.1 Four Seasons Stream Restoration Sediment Load Reduction Accounting 0*0000* • 1001 Boulders Parkway P 804.200-6500 TIMMONS GROUP suite 300 F804.560,1016 YOUR VISION ACHIEVED THROUGH OURS. Richmond. VA 23225 Evyyw.timmgn.mm April 15, 2014 Greg Harper VIA EMAIL: gharper@albemarle.org County of Albemarle Water Resources Manager 401 McIntire Road, Room 224 Charlottesville, Virginia 22902-4596 Re: Defining Pollutant Reductions by Four Season Drive Channel Improvements Albemarle County, Virginia Dear Mr. Harper, Timmons Group was contracted to analyze the applicability of three of the four (Protocols 1-3) Recommended Protocols for Defining Pollutant Reductions Achieved by Individual Stream Restoration Projects'. The following is a summary of our analysis. Protocol 1: Credit for Prevented Sediment during Storm Flow "This protocol provides an annual mass nutrient and sediment reduction credit for qualifying stream restoration practices that prevent channel or bank erosion that would otherwise be delivered downstream from an actively enlarging or incising urban stream," (Schueler and Stack 2013). Timmons Group followed the outlined three step process to compute a mass reduction credit for prevented sediment, as follows: Step 1. The stream sediment erosion rates and annual sediment loadings were estimated utilizing the Bank and Nonpoint Source Consequences of Sediment (BANGS) Method developed by Rosgen (2001), On January 17, 2014, Timmons Group assessed the existing channel by performing a series of field data collection exercises including the Bank Erosion Hazard Index (BEHI) and Near Bank Stress (NBS) assessments for each stream bank within the restoration reach. This assessment summary can be found on the enclosed Worksheet 3-13. Summary form of annual stream bank erosion estimates for various study reaches. Sample reaches were then assigned one of four (4) corresponding erosion rate categories ranging from 'Low" to "Extreme,' as illustrated on the enclosed BANCS Assessment Mao. Based on this analysis, the existing channel can be classified as having an extremely high erosion rate (calculated unit erosion rate = 0.17 tonslyrt1t). Extrapolated along the existing restoration length, the overall sediment load is predicted to be 92 tonlyr. Step 2. The erosion rates calculated using the BANCS method were converted to nitrogen and phosphorus loadings. Based on the published values presented in the guidance document for both phosphorus and nitrogen concentrations in stream bank sediments (1.05 pounds Pfon of sediment and 2.28 pounds Nlton of sediment), the predicted nutrient load resulting from erosion of the stream banks within the project limits is 97 Iblyr of phosphorus and 210 lblyr of nitrogen. ' Provided as Section 5 in Recommendations of the Expert Panel to Define Removal Rates for Individual Stream Restoration Projects prepared by Tom Schueler, Chesapeake Stormwaler Network and Bill Stack, Center for Watershed Protection. The Water Quality Goal Implementation Team issued their final approval of this document on May 13, 2013, CIVIL ENGINEERING I ENVIRONMENTAL I SURVEYING I GIs I LANDSCAPE ARCHITECTURE I CONSTRUCTION SERVICES Albemarle County Local TMDL Action Plan —April 2020 Update Page 24 Step 3. The protocol calls for a 50% effective reduction in the nutrient loading unless there is a representative "natural" condition from which the low BEHI and NBS scores can be estimated from, however the 50% effective reduction was used in this analysis. The following sediment and nutrient credits were determined for Protocol 1: Sediment = 461on/yr Total Phosphorus = 49 Ib/yr Total Nitrogen = 105 Ib/yr redit for In -stream and Rioarian Nutrient Processina durin "This protocol provides an annual mass nitrogen reduction credit for qualifying projects that Include design features to promote denitri ication during base flow," (Schueler and Stack 2013). To qualify for credit under Protocol 2. the bank height ratio is required to be 1.0 or less in order to promote hyporheic exchange between the stream channel and the floodplain rooting zone. The hyporheic box is calculated as the width of the channel plus five feet on either side of the stream bank, extending to a maximum depth of five feet, excluding areas of bedrock outcropping or confining clay layers. The box extends the length of the restored channel. As a result of the project 360 linear feet of stream will be reconnected to the hyporheic zone. The area of the proposed hyporheic box is 98 fl', resulting in an estimated 2,205 tons of soil nutrient processing. Protocol 2 limits the amount of reduction based on 40% of the contributing watersheds nitrogen load. The project will provide 64 Iblyr of nitrogen reduction. Protocol 3: Credit for Floodolain Reconnection Volume "This protocol provides an annual mass sediment and nutrient reduction credit for qualifying projects that reconnect stream channels to their floodplain over a wide range of storm events... A wetland -like treatment is used to compute the load reduction attributable to floodplain deposition, plant uptake. denitrification and other biological and physical processes." (Schueler and Stack 2013). It appears the intent of Protocol 3 is to provide increased sediment and nutrient credit for restoration projects that include the design of wetlands within the project floodplain that are actively engaged during smaller storm events, specifically those less than the 1.5 year storm event. The result is a reduction in sediment and nutrient concentrations of the stormwater runoff from the contributing watershed by means of hydraulic detention and nutrient processing occurring in the floodplain wetlands. Therefore. the project should result in a minimum watershed to foodplain ratio of one percent to ensure adequate hydraulic detention time for flows in the floodplam. Further, the floodplains should be specifically designed to act as wetlands, and designers are afforded more credit for designs that engage the floodplain during smaller storm events (e.g., 0.25 or 0.5 inches). The goal of this stream restoration project was to reduce erosion of the existing stream banks utilizing natural stream channel techniques. The proposed design primarily utilizes a Priority 3 restoration approach - widening the floodplain at the existing bankfull elevation. This is accomplished by creating a floodplain bench on one or both sides of the existing stream channel at the elevation of the existing bankfull stage (1- to 2-year storm event). A minimal floodplain bench Is proposed, corresponding to 0.2 acres of the 13-acre project watershed, or only 0.83%. As this project does not meet the minimum floodplain to watershed ratio, nor include specifically designed wetland areas to be engaged in small storm events, Protocol 3 is not applicable. Albemarle County Local TMDL Action Plan —April 2020 Update Page 25 Summary Sediment and nutrient credits were computed for the Hoehns Lake Stream Restoration project, as follows: rnospnorcus Sediment 1 49 105 46 2 WA 64 NIA 3 WA N/A WA Total 49 169 46 Timmons Group thanks you for the opportunity to work on this project and assess the potential sediment and nutrient reduction credits associated with compliance with the Chesapeake Bay TMDL. We would be happy to meet with you to review our findings and to discuss our assumptions, the guidance documents, and the Protocols in-depth, as related to this and future projects for Albemarle County. Please contact us at your convenience to discuss the subject further. Sincerely, Timmons Group Rebecca Napier, PE Environmental Project Manager Enclosures: • Worksheet 3-13. Summary forth of annual streambank erosion estimates for various study reaches. e BANCS Assessment Map Albemarle County Local TMDL Action Plan —April 2020 Update Page 26 7.2 RiverRun Stream Restoration Sediment Load Reduction Accounting POLLUTANT REDUCTION MEMO: RIVER RUN 1739A Allied St. Charlottesville, VA 22903 rW 540.239.1428 S 5 wwvv ecosystemservices.us inf xQecosystemservices.us September 25, 2019 TO: Stavros Cates Albemarle County Water Resource Program 401 McIntire Road Charlottesville, VA 22902 434-296-5816 80 Iscalos@albemarle.org SUBJECT: As -Built Pollution Reduction Report — RiverRun Summary: The pollutant reductions reported in table 1 associated with Protocol 1 below are 2.3% higher than those reported in the memo dated December 19'h, 2017 to reflect new erosion rate curves released with the Phase 6 Chesapeake Bay Model. Otherwise, the methodology is identical to that reported on December 191h, 2017. Edge of stream loading and reduction rates have been removed since the Phase 6 model now calculates delivery loads based on the project's location. Protocol 2, nitrogen reductions due to floodplain connection, have been added. Protocol 3 was assessed, but due to limited riparian area and volume under l' of depth, removal efficiencies were less than 1% and would yield less than 1 lb TP/yr. Table 1: As -built pollutant reduction achievements Method TSS (tons/yr) TP (Ibs/yr) TN (lbs/yd Protocoll 101.18 106.24 230.70 Protocol 0 0 64.63 Total 101.18 106.24 295.33 1.1. Methodology: Protocol 1 1. Perform a geomorphic survey of the project reach 2. Conduct Bank Erosion Hazard Index (BEHI) and Near Bank Stress (NBS) assessments in accordance with standards set forth by the Chesapeake Bay Field Office (USFWS A, 2004) & (USFWS B, 2004) 3. Estimate bankfull height based on field identified bankfull indicators and hydraulic geometry 4. Conduct bulk density testing S. Estimate erosion rates using the Bank Assessment for Non -point -source Consequences of Sediment (BANCS) model with the erosion rate curves provided by the Chesapeake Bay Program in the documentation for the Chesapeake Assessment Scenario Tool 6. Calculate edge of field sediment loading rates by multiplying the volumetric erosion rate by the field -measured bulk density 7. Calculate edge of field nitrogen and phosphorous loading rates by multiplying the sediment Albemarle County Local TMDL Action Plan —April 2020 Update Page 27 Pollutant Reduction Report — River Run September 25, 2019 loading rate by nitrogen and phosphorous concentrations supplied by the Expert Panel. B. Calculate the edge of field pollutant reduction rate by applying a restoration efficiency to the edge of field loading rates supplied by the Expert Panel. 9. Validate: Conduct post -construction BEHI on representative cross-section to ensure that BEHI is rated as moderate or less to receive credit. 1.2. Methodology: Protocol 2 Section 5 of the Expert Panel Guidance outlines the methodology for calculating nitrogen reductions from increased hyporheic exchange between the stream channel and the floodplain rooting zone. Since the floodplain rooting zone depth is limited, credit is only available for reaches in which the bank height ratio (low bank height to bankfull depth) is less than 1.0. In this case, 570.53 linear feet of the restored stream has a bank height ratio of less than 1 foot. The downstream section of the restored reach drops in elevation to tie to the existing stream, and as such, has a slightly higher BHR. The reduction rates achievable along these stretches are largely based on in -situ denitrification studies conducted on restored streams in the Baltimore metropolitan area by Kaushal et al., 2008 and Striz and Mayer, 2008. For credit calculations, the hyporheic zone is modeled as a rectangular tunnel with a width that stretches 5 feet on either side of the median base flow width, a depth of 5 feet, and a length equal to the qualified stream length (the entire reach in this case). It is within this volume of soil that denitrification occurs at a rate of 1.06 x 104 pounds/day/ton of soil (Kaushal et al., 2008). The accounting process for Protocol 2 credit calculations are as follows: 1. Estimate the median base flow width 2. Calculate the volume of hyporheic exchange tunnel and weight of soil contained therein using bulk densities from Protocol 1 3. Apply the denitrification rate to yield the nitrogen reductions due to hyporheic exchange The median baseflow width was estimated using measured base flow during asbuilt conditions. 1.3. Nutrient & Sediment Loading Estimate Sediment loading was calculated by performing a BANGS assessment to estimate erosion rates. Then the associated nutrient loading was calculated based on nutrient concentrations determined by Walter et al. (2007), consistent with the Expert Panel Guidance and shown in table 3. Inputs of the BANGS model include: bank erosion hazard index (BEHI) parameters, near bank stress (NBS) parameters, bank length, bank height, bulk density, and bankfull depth. Changes in BEHI parameters were geolocated using a survey grade GPS along the left and right bank and were combined with reconnaissance level 1 near bank stress (NBS) ratings to calculate erosion rates in feet per year. The area of bank subject to erosion was taken to be the area between the top and toe of the banks which were geolocated using a total station Ecosystem Services A 1739 Allied St., Suite A, Charlottesville, VA 22903 A 540.239.1428 A Hs..ecoscstemservices.us Page 2 of 4 Albemarle County Local TMDL Action Plan —April 2020 Update Page 28 Pollutant Reduction Report — River Run September 25, 2019 during the geomorphic survey conducted in October 2017. Bank height was calculated for sections between each change in NBS or BEHI parameter which follows the assumption that variations in bank height will correspond to a break in at least 1 BANCS parameter. Bankfull height was estimated using bankfull indicators and regional hydraulic geometry curves. Bulk density testing of stream bank sediments was performed using a modified USDA- NRCS methodology, the results of which are shown in table 2. With these inputs, a volumetric erosion rate could be calculated and multiplied by the bulk density to determine the edge of field (EoF) sediment loading rate shown in table 4. EoF nutrient loading rates were calculated by multiplying the EoF sediment loading rate by the nutrient concentrations shown in table 3. Table 2: Bulk density results Bank Length (ft) Bulk Density (Ibs/cf) 574.88 73.20 379.07 76.30 Table 3: Nutrient concentrations Associated Pollutant Ibs/ton of soil TP 1.05 TN 2.28 Table 4: Pre -restoration Pollutant loodina rates Loading Region TSS (tons/yr) TP (Ibs/yr) TN (Ibs/yr) Edge of Field 202.36 212.483 461.392 Watershed loading rates using TM DL Action Plan guidance can be found in Table 5 below. The methodology for Protocol 2 requires that reductions cannot exceed the loading produced by the watershed. The reductions achieved by Protocol 2 are verified as less than the loading produced by the watershed. Table 5: Watershed Pollutant Loading TP= 21.30 Ib/yr TN= 322.64 Ib/yr TSS= 13432.17 Ib/yr 1.4. Restoration Efficiency The Expert Panel conservatively assumed a 50%restoration efficiency for calculating pollutant reductions for Protocol 1. The Panel also decided that if monitoring proves an efficiency greater than 50%, a revised efficiency may be applied to all previous and subsequent credit releases. This efficiency is applied to the EoF pollutant loads from table 4 to determine the EoF reductions found in table 1 at the top of this document. Ecosystem Services 4 1739 Allied St., Suite A, Charlottesville, VA 22903 A 540.239.1428 A www.ecosystemservices.us Page 3 of 4 Albemarle County Local TMDL Action Plan —April 2020 Update Page 29 Section 8. Qualified personnel The following personnel are responsible for inspections; (Provide the name, telephone number, and qualifications of the qualified personnel conducting inspections.) Michael Stumbaugh 401 McIntire Rd Charlottesville, VA 22902 434-906-4459 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: Company: Title: Signature: Date: 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: Company: 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)?