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Home My WebLink AboutWPO201800027 VSMP - SWPPP 2020-06-01Albemarle County Stormwater Pollution Prevention Plan (SWPPP) For Construction Activities At: MARTHA JEFFERSON HOSPITAL PRESIDIO APARTMENTS AMENDMENT #1 (WP0201800027) PETER JEFFERSON PARKWAY CHARLOTTESVILLE, VA 22911 Prepared by: COLLINS ENGINEERING, INC 200 GARRETT STREET, SUITE K CHARLOTTESVILLE, VA 22902 434.293.3719 Prepared for: PRESIDIO PANTOPS, LLC 455 SECOND STREET SE, 5T" FLOOR CHARLOTTESVILLE, VA 22902 SWPPP Preparation Date: 7�'�8 Updated: 4/39/201-9 4 �1^�0 6/1/2020 APPROVED by the Albemarle County Community Development Department Date 06/05/2020 File WP0201800027 Amendment #1 CONTENTS: 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 13. Grading and Stabilization Log 14. Amendment Log Section 1- Registration statement VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY FOR OFFICE USE ONLY GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM ID Number: CONSTRUCTION ACTIVITIES (VAR10) Technical Criteria: IIB ❑ IIC ❑ REGISTRATION STATEMENT 2019 NEW ISSUANCE KI MODIFICATION WITH ACREAGE INCREASE ❑ Existing Permit Coverage Number (if applicable, VAR10####): Section I. Operator/Permittee Information. RE -ISSUANCE ❑ MODIFICATION WITHOUT ACREAGE INCREASE ❑ 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 Operator Name: PRESIDIO PANTOPS, LLC Contact person: ALAN TAYLOR Address: 455 SECOND STREET SE, 5TH FLOOR City, State, Zip Code: CHARLOTTESVILLE, VA 22902 Phone Number: 434-245-4970 Primary Email: alan@riverbenddev.com 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 17 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: MARTHA JEFFERSON HOSPITAL APARTMENTS Address: PETER JEFFERSON PARKWAY City and/or County and Zip Code: CHARLOTTESVILLE, VA 22911 Latitude and Longitude (6-digit, decimal degrees format): 38.020721,-78.447276 C. Construction Activity Entrance Location (description, street address and/or latitude/longitude in decimal degrees): PETER JEFFERSON PARKWAY 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 26.98 AC Management Plan): Primary estimated area to be disturbed (portions with 17.17 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/D D/YYYY) Start date: 06/1/2020 Completion date: 06/1/2022 FEDERAL ❑ STATE ❑ PUBLIC ❑ PRIVATE D. Nature of the Construction Activity Description (i.e. commercial, industrial, residential, agricultural, environmental): RESIDENTIAL E. Municipal Separate Storm Sewer System (MS4) name (if discharging to a MS4): Rev 04/2019 PAGE 2 17 CONSTRUCTION GENERAL PERMIT (VAR10) REGISTRATION STATEMENT 2019 F. Is this construction activity part of a common plan of development or sale? YES ❑ NO G. 61" Order Hydrologic Unit Code (HUC) and Receiving Water Name(s). Attach a separate list if needed. HUC RECEIVING WATERBODY(S) 020802040401 (JR14) MEADOW CREEK 020802040404 (JR17) CARROLL 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 PAGE 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 9VAC25-880-70. Part III. K must physically sign this certification. A typed signature is not acceptable. Please note that operator is defined in 9VAC25-870-10 as follows: "Operator" means the owner or operator of any facility or activity subject to the Act and this chapter. In the context of stormwater associated with a large or small construction activity, operator means any person associated with a construction project that meets either of the following two criteria: (i) the person has direct operational control over construction plans and specifications, including the ability to make modifications to those plans and specifications or (ii) the person has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan for the site or other state permit or VSMP authority permit conditions (i.e., they are authorized to direct workers at a site to carry out activities required by the stormwater pollution prevention plan or comply with other permit conditions). In the context of stormwater discharges from Municipal Separate Storm Sewer Systems (MS4s), operator means the operator of the regulated MS4 system. 9VAC25-880-70. Part III. K. Signatory Requirements. Registration Statement. All Registration Statements shall be signed as follows: a. For a corporation: by a responsible corporate officer. For the purpose of this chapter, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation; or (ii) the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations, the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for state permit application requirements; and where auth ority 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: ALAN TAYLOR Signature (signed in ink): � �-- Date: 04/14/2020 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@deg.virginia.eov If the locality is the VSMP Authority, please send to: fhe 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 (or a 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 (ii) the person has day-to-day operational control of those activities at a project that are necessary to ensure compliance with a stormwater pollution prevention plan for the site or other state permit or VSMP authority permit conditions (i.e., they are authorized to direct workers at a site to carry out activities required by the stormwater pollution prevention plan or comply with other permit conditions). In the context of stormwater discharges from Municipal Separate Storm Sewer Systems (MS4s), operator means the operator of the regulated MS4 system. "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 6-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 9VAC25-870-10. Definitions. Le. a subdivision, commercial development, business park, etc. G. 6th Order Hydrologic Unit Code (HUC) and associated Receiving Water Name(s). Provide all 6th 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 responsibility for the overall operations of a principal geographic unit of the agency. Section VII. Submittal Instructions. Submit this form to the VSMP Authority that has jurisdiction for your construction activity. The VSMP Authority may be either DEQ or your locality depending on the location and type of project. If your project is under the jurisdiction of a Local VSMP Authority, please contact the locality for additional submittal instructions. A blank area is provided for the Local VSMP Authority to include their mailing address. Who is the VSMP Authority for my project? DEQ or the locality? • DEQ: DEQ is the VSMP Authority and administers permit coverage for land -disturbing activities that are: ➢ within a locality that is not a VSMP Authority; ➢ owned by the State or Federal government; or ➢ utilizing approved Annual Standards and Specifications. • The Locality: The local government (locality) is the VSMP Authority and administers permit coverage for all other projects not covered by DEQ as listed above. For these projects, please submit permit forms directly to the Local VSMP Authority. A list of Local VSMP Authorities is available on DEQ's website here: Local VSMP Authority List. DEQ'S CONSTRUCTION GENERAL PERMIT WEBSITE http://www.deg.virginia.gov/Programs/Water/StormwaterManagement/VSMPPermits/ConstructionGeneraIPermit.aspx Rev 04/2019 PAGE 7 17 o �Q TMP 78 — 20F 00 State Farm Blvd. N F State Farm Mutual Auto Insurance Co. D.B. 626 p. 466, p. 469 (plat) %l'l 0 / 1/1��b�� v / G I1Iq /P/ l / 6° 59( � o v D. B. � - � i� -- ice,✓�i � � \ _- __ .��_ \�`�.°-- �� , � � i \X 117 // 9 V � SWPPP EXHIBIT - POLLUTION PREVENTION PLAN - OVERALL SITE PLAN ® COLLINS ENGINEERING DATE:6/1/20 200 GARRETT STREET SUITE K CHARLOTTESVILLE, VIRGINA 22902 OFFICE: 434-293-3729 SCALE: 1 °=200' Section 2 - Notice of General Permit Coverage Section 3 - Nature of Activity PURPOSE: THE PURPOSE OF THIS LAND DISTURBING ACTIVITY IS TO CREATE THE MARTHA JEFFERSON HOSPITAL APARTMENTS PROJECT. THE TOTAL AREA TO BE DISTURBED WITH THIS PLAN IS 17.17 ACRES. EXISTING SITE CONDITIONS: THIS SITE IS CURRENTLY A MIXTURE OF WOODS AND GRASS AND DRAINS TO EXISTING WATERWAYS LOCATED TO THE EAST, WEST, AND SOUTH. AN EXISTING GRAVEL ROAD EXISTS ON -SITE. EXISTING PRESERVED STEEP SLOPES EXIST ON -SITE. ADJACENT AREAS: THIS SITE IS BORDERED TO THE NORTH BY PETER JEFFERSON PARKWAY. TO THE SOUTH EXISTS THE RIVANNA RIVER. AN EXISTING COMMERCIAL PROPERTY EXISTS TO THE WEST. A CURRENTLY VACANT MIXED -USE COMMERCIAL LOT EXISTS TO THE EAST. OFFSITE LAND DISTURBANCE: NO CONSTRUCTION ACTIVITIES ARE PROPOSED OUTSIDE OF THE LIMITS OF DISTURBANCE. ALL OFFSITE WORK SHALL BE CONFINED TO PUBLIC RIGHT-OF-WAY AND EASEMENTS. CRITICAL AREAS: CARE SHALL BE TAKEN TO PREVENT CONSTRUCTION RUNOFF FROM ENTERING THE EXISTING PRESERVED STEEP SLOPES, RIVANNA RIVER AND ADJACENT PROPERTIES. SEQUENCE OF CONSTRUCTION: 1. NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE -CONSTRUCTION MEETING AS REQUIRED. 2. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE APPROVAL FROM THE INSPECTOR ON THE PROJECT. 3. INSTALL THE PAVED CONSTRUCTION ENTRANCE WITH WASH AREA AS SHOWN ON THE PLANS. CONSTRUCTION ENTRANCES TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER 4. INSTALL THE INITIAL CONSTRUCTION MEASURES AS SHOWN ON THE PHASE I EROSION CONTROL SHEET. THIS INCLUDES (1) CONSTRUCTION ENTRANCE, (2) SEDIMENT BASINS, (2) SEDIMENT TRAPS, CONSTRUCTION ROAD STABILIZATION, SILT FENCE, AND DIVERSION DIKES. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. 6. ONCE THE PERIMETER EROSION CONTROL MEASURES HAVE BEEN INSTALLED AS SHOWN ON THE PHASE I EROSION CONTROL PHASE PLAN, CONTRACTOR SHALL INSTALL ANY REMAINING ESC PHASE I CONSTRUCTION MEASURES AS SHOWN ON THE EROSION CONTROL SHEET, INCLUSIVE OR TEMPORARY SEEDING & DUST CONTROL AS NEEDED. 7. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 8. AFTER INSTALLATION OF ALL OF THE PHASE I ESC MEASURES, THE CONTRACTOR CAN CLEAR THE SITE. 9. ONCE ESC PHASE I IS COMPLETE, THE CONTRACTOR CAN PROCEED TO ESC PHASE II. THE CONTRACTOR SHALL ENSURE THE PERIMETER DIVERSIONS MAINTAIN POSITIVE GRADES AT ALL TIMES & DISCHARGE INTO THEIR RESPECTIVE EROSION & SEDIMENT CONTROL TRAPPING DEVICES. 10. CONTRACTOR SHALL INSTALL THE ESC PHASE II CONSTRUCTION MEASURES AS SHOWN ON THE EROSION CONTROL SHEET, INCLUSIVE OR TEMPORARY SEEDING & DUST CONTROL AS NEEDED. PERIMETER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. 11. DURING THIS ESC PHASE II, ROUGH GRADING OPERATIONS CAN BEGIN. 12. ONCE THE SITE HAS BEEN ROUGH GRADED TO THE POINT WHERE SEDIMENT TRAP #2 CAN NO LONGER REMAIN, THE CONTRACTOR CAN FILL THIS TRAP. THE REMOVAL OF SEDIMENT TRAP #2 SHALL NOT OCCUR PRIOR TO THE APPROVAL OF THE COUNTY INSPECTOR. DEWATERING OF SEDIMENT TRAP #2 SHALL BE COMPLETED IN ACCORDANCE WITH MINIMUM VESCH SPECIFICATIONS. 13. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 10. THE CONTRACTOR SHALL THEN PROCEED TO ESC PHASE III. CONTRACTOR SHALL INSTALL THE ESC PHASE III CONSTRUCTION MEASURES AS SHOWN ON THE EROSION CONTROL SHEET, INCLUSIVE OR TEMPORARY SEEDING & DUST CONTROL AS NEEDED. PERIMETER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. 11. THE CONTRACTOR SHALL COMPLETE THE ROUGH GRADING OF THE SITE IN ESC PHASE III. 12. FOLLOWING THIS THE CONTRACTOR SHALL FINE GRADE THE SITE AND INSTALL THE UTILITIES, CURB & GUTTER, SIDEWALK, BUILDING & PARKING PADS AND REMAINING INFRASTRUCTURE. 13. INLET PROTECTION SHALL BE INSTALLED ON ALL STORM SEWER INLETS AND YARD DRAINS IMMEDIATELY FOLLOWING THEIR INSTALLATIONS. ANY DRAINAGE SYSTEM FOUND TO BE CLOGGED OR CONTAINING SEDIMENT DURING CONSTRUCTION SHALL BE CLEANED PRIOR TO THE COMPLETION OF THE PROJECT. 14. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. 15. THE PERIMETER DIVERSIONS, SEDIMENT TRAP #1, SEDIMENT BASIN #1 AND SEDIMENT BASIN #2 SHALL REMAIN FUNCTIONAL AS LONG AS POSSIBLE, AS DESIGNED. THESE SEDIMENT TRAPPING DEVICES SHALL NOT BE REMOVED PRIOR TO THE APPROVAL OF THE COUNTY INSPECTOR. 16. ONCE THE SITE's CONSTRUCTION IS COMPLETE, AND THE PROJECT IS FULLY STABILIZED, SEDIMENT TRAP #1 CAN BE REMOVED, SEDIMENT BASIN #1 CAN BE CONVERTED TO A PERMANENT SWM FACILITY, SEDIMENT BASIN #2 CAN BE CONVERTED TO A PERMANENT SWM FACILITY AND THESE FACILITIES' PERIMETER DIVERSIONS CAN BE REMOVED. DEWATERING OF THESE FACILITIES SHALL BE COMPLETED IN ACCORDANCE WITH MINIMUM VESCH SPECIFICATIONS. 17. NO EROSION CONTROL MEASURES MAYBE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE APPROVAL OF THE INSPECTOR ON THE PROJECT. 18. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL ■-\�:@0X 19. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. 20. ONCE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR CAN REMOVE THE REMAINING EROSION CONTROL MEASURES. NO ITEM SHALL BE REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES PERMISSION. Section 4 - Erosion and Sediment Control Plan MARTHA JEFFERSON HOSPITAL APARTMENTS GENERAL NOTES OWNER: PRESIDIO PANTOPS, UDC 455 SECOND ST SE, STH FLOOR CHARLOTTESVILLE, VA 22902 DEVELOPER: RIVERBEND DEVELOPMENT 455 SECOND STREET SE, SUITE 400 CHARLOTTESVILLE, VA 22902 (434) 245-4970 ENGINEER: COIL INS ENGINEERING 200 GARRETT ST, SUITE K CHARLOTTESVILLE, VA 22902 (434) 293-3719 TAX MAP NO.: 07800-00-00-02OM6 DB 5224 PG 198 TOTAL PROJECT AREA: 26.98 ACRES TOTAL ZONING: PLANNED DEVELOPMENT MIXED COMMERCIAL WITH PROFFERS (ZMA 01-015), PRESERVED AND MANAGED STEEP SLOPES OVERLAY AREA. 100 YR FLOODPLAIN OVERLAY DISTRICT TOPO & SURVEY: SURVEY PROVIDED BY ROUDABUSH & GALE DATED JUNE, 2017. TOPOGRAPHY IS AERIAL SURVEY PERFORMED BY VIRGINIA RESOURCE MAPPING DATED JANUARY, 2000. TOPO FIELD VERIFIED BY COLLINS ENGINEERING PRIOR TO CONSTRUCTION. DATUM: NAD83, NAVD 88 PRE -CONSTRUCTION TERRAIN: UNDEVELOPED PROPERTY SLOPING DOWN TOWARD THE RIVANNA RIVER AND INTERSTATE 64. PRE -CONSTRUCTION VEGETATION: WOODED WATER SUPPLY PROTECTION AREA: N/A WATERSHED / WATER RESOURCE AREA: RIVANNA RIVER DRAINAGE BASIN UTILITIES (WATER AND SEWER): COUNTY PUBLIC WATER AND SANITARY SEWER AGRICULTURAL/ FORESTAL DISTRICT: NONE PHASING: THIS SITE SHALL BE DEVELOPED IN ONE PHASE. STREAM BUFFERS/FLOODPLAIN: THE STREAM BUFFERS SHOWN HEREIN SHALL BE MANAGED IN ACCORDANCE WITH THE ALBEMARLE COUNTY WATER PROTECTION ORDINANCE. THIS PARCEL IS WITHIN ZONE X "AREA OF MINIMAL FLOOD HAZARD", PER FEMA MAP NUMBER 51003CO289D ADOPTED FEBRUARY 4, 2005. NO IMPACTS ARE PROPOSED FOR THE 100 YEAR FLOODPLAIN. THE PROPERTY IS WITHIN A STATE DAM INUNDATION ZONE AND FEDERAL DAM INUNDATION ZONE ALONG THE RIVANNA RIVER. ALL PROPOSED DEVELOPMENT SHALL BE LOCATED OUTSIDE OF THE LIMITS OF THE INUNDATION ZONES. CRITICAL SLOPES: MANAGED STEEP SLOPES AND PRESERVED STEEP SLOPES ARE EXISTING ON SITE AS SHOWN ON THE PLAN. IMPACTS TO MANAGED SLOPES ARE CONSISTENT WITH THE ALBEMARLE COUNTY ZONING ORDINANCE. NO IMPACTS ARE PROPOSED TO THE EXISTING PRESERVED SLOPES. BURIAL SITES: NO CEMETERIES WERE FOUND DURING FIELD INVESTIGATION OF THE SITE. STORMWATER MANAGEMENT: A LEVEL II WET POND IS PROPOSED WITH THIS DEVELOPMENT. THE WET POND WILL PROVIDE STORMWATER QUALITY AND QUANTITY TREATMENT FOR THE MAJORITY OF THE PROPOSED IMPROVEMENTS. THE REMAINING WATER QUALITY REQUIREMENTS WILL BE MET THROUGH THE BEST MANAGEMENT PRACTICE OF PURCHASING NUTRIENT CREDITS. ADDITIONALLY, THE VAST MAJORITY OF THE REMAINING PROPOSED IMPROVEMENTS WILL RECEIVE REATMENT VIA A PROPOSE 'y.RY DETENTION CELL. 2 FAR VSMP PLAN AMENDMENT #1 PROPOSED CHANGES: Al A PHASE II AND PHASE III EROSION & SEDIMENT CONTROL PLAN HAS BEEN ADDED. A2 THE APPROVED DRY DETENTION CELL (PROVIDING STORMWATER QUANTITY, NOT QUALITY TREATMENT) HAS BEEN ENLARGED AND THE PREVIOUSLY APPROVED UNDERGROUND DETENTION SYSTEM HAS BEEN REMOVED. ' TITLE SHEET COVER 1 ' EXISTING CONDITIONS 2 (EXCERPT FROM SDP201900075) ' EROSION & SEDIMENT CONTROL PLAN NARRATIVE 3 EROSON & SEDIMENT CONTROL PLAN 4 PHASE II EROSION & SEDIMENT CONTROL PLAN 4A (NEW) PHASE III EROSION & SEDIMENT CONTROL PLAN 4B (NEW) EROSION & SEDIMENT CONTROL DETAILS & CALCULATIONS 5 STORMWATER MANAGEMENT PLAN 6 LEVEL II WET POND DETAILS 7 (NOT MODIFIED) - 9 DRY DETENTION CELL DETAILS 8 GENERAL STORMWATER MANAGEMENT NOTES & DETAILS 9 VSMP PLAN (AMENDMENT #1 TO WP0201800027) RIVANNA MAGISTERIAL DISTRICT ALBEMARLE COUNTY, VIRGINIA TMP: 07800-00-oo-oxoFo OWNER: 1DM II SF NATIONAL LLC % CIO STATE FARM MUTUA AUTOMOBILE ZONING: COMMERCIAL OFFICE ACREAGE: 35.00 AC I PG: 44751IA n 1 / / 1 / MP: oW80o-o0-oo- "t OWNER: 1DM II SF NATIONAL LLC CIO STATE FARM MUTUAL AUTOMOBILE ONING: COMMERCIAL OFFICE CREAGE x9.88AC / - B/PG: 4475o,8 / / / v ITMP ] 0o00-0x0".. OWNER MARTHAJEFFERSOSON HOSPITAL ZONING PLANNED DEVELOPMENT MIXED \ COMMERCIAL TMP: 01800-00-oo-oxoM4 OWNER: MARTHAJEFFERSON HOSPITA ZONING: PLANNED DEVELOPMENT MIX ACREAGE: 38.49AC DR PG: 49351500 O V� 0 ACREAGE: x6.98AC DP/PG5zz4Ix98 - TMP: WORRELLL NDMx _ \ OWNER: PLANED LANELOPME TMMXENTCOMERCI LLC ZONING: PLANNED DEVELOPMENT MIXED COMMERCIAL / ,ACREAGE: x9.63 AC _ DB/PG: 4o69h6], z5441z49, x6o]IS7z, x6]3/6x8 \ _ _ — — — — — — — TMP: o]Boo-oo-oo-ox.Mz , ��\ • \ ' OWNER: WORRELL LAND& DEVELOPMENTCOMPANY LLC ZONING: PLANNEDDEVELOPMENT MIXED COMMERCIAL ACREAGE z9.63 AT DB/PG: 4o69/x67,2544/x49, \ --\ • • • '"-i'" 2607/572, x67316x8 \- x, SHEET LAYOUT SCALE: 1" = 100' 0 O VICINITY MAP SCALE: 1" = 1000' TH 0 SCOW R. COLLINS4 U No. 35791 ,2 .off w4 SIONAL E�Ol LEGEND VIRGINIA EROSION -4 EROSION CONTROL * HANDBOOK SSPECIFICATIONMNUMBER ENT ROL ST ® STRAW BAIL BARRIER J. z TEMPORARY DIVERSION DIKE 309 Z M Lu ST �Bf oB� TEMPORARY SEDIMENT TRAP 3.13 I Q SB ® SEDIMENT BASIN 114 V Lu lP INLET PROTECTION 307 rLL' 'r 2: SF T N ;K SILT FENCE 3.05 O Q z CE CONSTRUCTION ENTRANCE 302 N Q CD , CHECK DAM 3.20 W FD �� TEMPORARY FILL DIVERSION ITO Ld J z J OV �0 DIVERSION 3.72 > � U) I PS PS PERMANENT SEEDING I- , V ^ Lu W TO TO TOPSOILING 330 7 QJ Z Lu LU ClP CULVERT INLET PROTECTION 308 Z Q > OC OC DUST CONTROL 339 U Q UU Y d TSD O TEMPORARY SLOPE -- 315 Lu Q H J SA SAFETY FENCE 30I ' l TEMPORARY RIGHT-OF-WAY Ill Ya DIVERSION J w L Lu 0 2 � z J o ROADS Lu (1)O EXISTING CULVERT Of 0. of Q DROP INLET & STRUCTURE NO. J Q LLLL CURB LL CURB & GUTTER OO Lu 0 PROPOSED ASPHALT N 0 PROPOSED CONCRETE PROPOSED PAVER (IMPERVIOUS) BENCH MARK Qc =` VDOT STANDARD STOP SIGN ^O G -----------xao-------- EXISTING CONTOUR rr " u 30B NO. PRESERVED STEEP SLOPES 172131 SCALE MANAGED STEEP SLOPES AS SHOWN SHEET NO. 9 1 O /Q / NOTES:SURVEY PROVIDED BY ROUDABU F &GALE DATED DUNE, 2017. TOPOGRAPHY IS , I Y �/ 1 o Q fly Q / \ _ _ 1. THIS PROIECT IS LOCATED WITHIN FLOODPLAIN LIMITS, BASED ON FEMA MAP ' NUMBER 51003CO269D ADOPTED FEBRUARY 4, 2005 / ' MATCHLINE A S THIS SHEET I p / 2� gOBi TH Q�G O BEN CHMARK=EX STI G(/ /' / O g40.000 j Q SANITARY SEWE MAfI��H'O+/ AERIAL SURVEY PERFORMED BY VIRGINIA RESOURCE MAPPING DATED JANUARY, / �Q' I EXIST' DRAIN I 2 R` 1 r� 2006 TOPO FIELD VERIFIED BY COLLINS ENGINEERING IN ]ANUARY 2018. / /� /� / / INLET6 PICAL) \ \ O O TOP ELEV = 448.92 I 3, MANAGED AND PRESERVED SLOPES ARE LOCATED ON THE PROPERTY. / / / / _ / _ / 1 U SCOTT R. COLLINS'Y� I 4. 100' WPO STREAM BUFFER IS SHOWN. THE STREAM BUFFER SHOWN HEREON /� / �, \ O U No. 35791 ,a EXISTING MH�fv1JH-1-4 SHALL BE MANAGED IN ACCORDANCE WITH THE ALBEMARLE COUNTY WATER / L I I �� / / \ 1� W� b PROTECTION ORDINANCE. r I/ * of � �`S7pNAL ET1G �; III I I II I III III o EXISTI DRAINAGE \ ��'•�' S'.4 / Y•Y INLET PICAL) STING' \ TMP: 07800-00.00-031H0 EXICURB AND GUTTER C - _ OWNER GAHC4 CHARLOTTESVILLE _ p, ALONG PETER JEFFERSONj VA MOB LLC ARKWAY TO BE REMOV "� 0/ N35° 00* 00.00"E �l ZONING. PLANNED DEVELOPMENT / THIN THISAREA'FOR E i51 MIXED COMMERCIAL O TMP. 07800 00 00 020M5 : '�� / (] , 7 ^ ACREAGE: 7.38 AC /Q \ OWNER' PLANNED DEVELOP, LLC ENTRANCE ROAD _ / /y � OPOSED ENTRAf� \ �\, �- p � � / soe oo m D6/Pc: 431enes ZONING. PLANNED DEVELOPMENT � � C � 't I PORTION OF CURB AND GUARDRAIL ALONG p= / / op,'�p ry AO4,51MIXA DB PG.5224I198 COMMERCIAL / PETER JEFFERSON PARKWAY TO BE REMOVED) / / Apo ,� O ¢ FOR APARTMENT COMPLEX ENTRANCES GE: I \ GRIN uu \ EXISTIN PINE/HARDWOOD z a TREES (TYP) \ fl �/ rn� \ \ p\ / / �� /// III IIIIII �IIIIII� �� Ir�I�"4,-'.' v� vvv QQ/�j / v W ` /�C5 /- \ O'FACILITIES&ACCESS / \ �\\ �I \\ // /� \ \ //// /�� IIIIII IIIII O / I EASEMENT FOR SWIM � ' I �O \ F v A / Id fia7�' RG0� \ /JAII" IIII IhI�I vF �s�F o l / / lIII I IIIII IIIFI >> >� �o A ING fl ,}g0 PION TO PROPER' p EXISTING DRAINAGE O - / E ISTING ACSA 16 DIP WATERLINE INLETS (TYPICAL / o // 6, v ROR/ ION O�rtiR's AND GUlyRD IL ALONG i E ER PARKWAY TO BE ENTRANCES FETER JEFF � OMPLEX ENTRp,NCES � ��\ \ i � / // / /// ➢s ' � n I \ ME r I EXISTING CURB I \TTER ALONG PETERRRO �^ \VZ¢J E I$INGREELINE WITHIN THIS AI I 1 \ \ \ OdOVED II A FOR AE OPOSEDt��OD/iCr M —40ERbADTOB GRAVEL \\� \\\ f- LL EXI—411 M INL% �\v ORTIONOFMEDIAN'ANDCUR TOBfE, REMOVED FOR NEWT _ _ \ti ci^ V�Lu M 44 CNJ EXISTM�AG�EI / _ N83_0539.O�P�3 O A v_ Z 57965 =_42o-- 1 1 \ \ \ \ \ \ \ a z <XI INGPI HARDV006/ i �Tr S (TYp--) /- /// A A I I I I V \ _ L462.77�, r 70B.Oo .10 78 EXISTING PRES ZVE W G �BLO EST P LL i APPROXiM �E LOCATION �� ` \ _ _\ — — _ w I ACCESS BASEMENT II III / `.. �_� — — — — Z WORRELL; LAND I dI d f _ _ — q L / \ TMP: 07800 00-00-020M1 y �� P: 0] -00-02 6 \ \II // // \ &DEVELGPMENT / OWNER WORRELL LAND& DEVELOPMENTOOMPANY LLC / D.B. 574, PG.320 Li Q M / / /� ZONING PLANNEDD ELOPMENT MIXED COMMERCIAL _� \ 11 l /l d l i I I 1 ( ER P 51 Q PANT P LLCM I / D.B. 881, PG. 290 O l l I / I J \ \ DEVELO NT MW C M / /� v I'I II I I /g /// / ACREAGE: 2963 AC 26 U a 6� / / I I 4 n` DBIPG: 4069126], 25dd/2ay,07/572167WIN8 D.B. 881i, PG. 297 I ® I I I F�CILIITIE�S A E�S / \ D6 G: 19 A �� // V �� — — — — Y AS M NT FQ R $W / / / 1\ \ \ \ \ \ ` / i/ I I / = ` — Q q \V��\\\VAAA VAVA� _ _ _ — W o r� MefA� y 3=g° W\EASEMrNT F � 0� czJREAN BUlFER STN/GORpV�LIDB. 32715, OytD EXISTIN[G PINEY — W O w Es(TYP. Lu ® \\ \ \ \�� o°� �✓ / // / Iti \c"' =3so o_ __ _ —� \ \ —\\ —� \ �/� I I i I 1 // \\\� =cS Q L.L LL 04 Q or � _sso——_� /J Li �\ o� \ o EXSTIf1GPR�VATE JOB NO. �'- _ _ // / / j// / F�� v _ — _ �172131 ® io — -rC s�t_� /cy �/ / V /// / // / —38 — G 3aRA�NAGE EASEMENT _ — _ Q /� / / �aa SCALE OB 5233, PG 359 , ' Q 3 - _ _� — — / // /// // / / / / a zo �L 1 °= UE i i@REMAI // /� / /� �� ( IN F\E ) r SHEET NO. / EROSION & SEDIMENT CONTROL MEASURES: STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. STRUCTURAL PRACTICES USED IN THIS SECTION CONSIST OF THE FOLLOWING: 3.01 SAFETY FENCE A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE BY THE PUBLIC. APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH CAN BE CONSIDERED UNSAFE BY VIRTUE OF POTENTIAL ACCESS BY THE PUBLIC. 3.02 CONSTRUCTION ENTRANCE A STABILIZED PAVED CONSTRUCTION ENTRANCE KITH A WASH RACK LOCATED AT POINTS OF VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE THE AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS. 305 SILT FENCE: A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC STRETCHED ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED, TO INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS /N ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE, AND TO DECREASE THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WHH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE NTH THE VIRGINIA EROSION se SEDIMENT CONTROL HANDBOOK (VESCH). 307 STORM DRAIN INLET PROTECTION' A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR CURB INLET. TO PREVENT SEDIMENT FROM ENTERING STORM DRAINAGE SYSTEMS PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. INLET PROTECTION APPLIES WHERE STORM DRAIN INLETS ARE TO BE MADE OPERATIONAL BEFORE PERMANENT STABILIZATION OF THE CORRESPONDING DISTURBED DRAINAGE AREA. 309 TEMPORARY DIVERSION DIKE' A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA. TO DIVERT STORM RUNOFF FROM UPSLOPE DRAINAGE AREAS AWAY FROM UNPROTECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET. TO DIVERT SEDIMENT LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT -TRAPPING FACILITY SUCH AS A SEDIMENT TRAP OR SEDIMENT BASIN. USE WHEREVER STORMWATER RUNOFF MUST BE TEMPORARILY DIVERTED TO PROTECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON SITE DURING CONSTRUCTION. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 MONTHS OR LESS, WHICH CAN BE PROLONGED KITH PROPER MAINTENANCE 312 DIVERSION: A CHANNEL CONSTRUCTED ACROSS A SLOPE WITH A SUPPORTING EARTHEN RIDGE ON THE LOWER SIDE. TO REDUCE SLOPE LENGTH AND TO INTERCEPT AND DIVERT STORMWA TER RUNOFF TO STABILIZED OUTLETS AT NON -EROSIVE VELOCITIES APPLIES WHERE RUNOFF FROM AREAS OF HIGHER ELEVATION MAY DAMAGE PROPERTY CAUSE EROSION OR INTERFERE WITH THE ESTABLISHMENT OF VEGETATION ON LOWER AREAS WHERE SURFACE AND/OR SHALLOW SUBSURFACE FLOW IS DAMAGING SLOPING UPLAND, AND WHERE THE SLOPE LENGTH NEEDS TO BE REDUCED TO MINIMIZE SOIL LOSS. 313 TEMPORARY SEDIMENT TRAP: A TEMPORARY PONDING AREA FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE OUTLET. TO DETAIN SEDIMENT LADEN RUNOFF FROM SMALL DISTURBED AREAS LONG ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. USE BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA IS LESS THAN 3 ACRES, WHERE THE SEDIMENT TRAP WILL BE USED NO LONGER THAN 18 MONTHS, AND IT MAY BE CONSTRUCTED EITHER INDEPENDENTLY OR IN CONJUNCTION WITH A TEMPORARY DIVERSION DIKE. 3.14 TEMPORARY SEDIMENT BASIN: A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE STRUCTURE FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS IN "WET" AND "TRY" STORAGE LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO SETTLE OUT APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA IS EQUAL TO OR GREATER THAN THREE ACRES. THERE MUST BE SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY FOR THE CONSTRUCTION OF A TEMPORARY IMPOUNDMENT. 318 OUTLET PROTECTION: STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. TO PREVENT SCOUR AT STORMWATER OUTLETS, TO PROTECT THE OUTLET STRUCTURE, AND TO MINIMIZE THE POTENTIAL FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND ENERGY OF CONCENTRATED STORMWATER FLOWS. APPLICABLE TO THE OUTLETS OF ALL PIPES AND ENGINEERED CHANNEL SECTIONS. SIB RIPRAP: A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE WITH FILTER FABRIC OR GRANULAR UNDERLINING. TO PROTECT THE SOIL FROM THE EROSIVE FORCES OF CONCENTRATED RUNOFF, SLOW THE VELOCITY OF CONCENTRATED RUNOFF WHILE ENHANCING THE POTENTIAL FOR INFILTRATION, AND TO STABILIZE SLOPES WITH SEEPAGE PROBLEMS AND/OR NON COHESIVE SOILS. USE WHEREVER SOIL AND WATER INTERFACE AND THE SOIL CONDITIONS WATER TURBULENCE AND VELOCITY, EXPECTED VEGETATIVE COVER, ETC., ARE SUCH THAT THE SOIL MAY ERODE UNDER THE DESIGN FLOW CONDITIONS. 320 ROCK CHECK DAMS SMALL TEMPORARY STONE DAMS CONSTRUCTED ACROSS A SWALE OR DRAINAGE DITCH. TO REDUCE THE VELOCITY OF CONCENTRATED STORMWA TER FLOWS, THEREBY REDUCING EROSION OF THE SWALE OR DITCH. THIS PRACTICE ALSO TRAPS SEDIMENT GENERATED FROM ADJACENT AREAS OR THE DITCH ITSELF, MAINLY BY PONDING OF THE STORM" TER RUNOFF. THIS PRACTICE UTILIZING A COMBINA BON OF STONE SIZES, IS LIM17ED TO USE IN SMALL OPEN CHANNELS WHICH DRAIN 10 ACRES OR LESS. 331 TEMPORARY SEEDING: THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE PROTECTION TO BARE SOILS EXPOSED DURING CONSTRUCTION UNTIL PERMANENT VEGETATION OR OTHER EROSION CONTROL MEASURES CAN BE ESTABLISHED. 3.32 PERMANENT STABILIZATION: THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS TO PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT IS ECONOMICAL, ADAPTABLE TO SITE CONDITIONS, AND ALLOWS SELECTION OF THE MOST APPROPRIATE PLANT MATERIALS. TO IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCTION ACTIVITIES, ALL AREAS WILL RECEIVE A PERMANENT VEGETATIVE COVER. 3.35 MULCHING: APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO THE SOIL SURFACE. TO PREVENT EROSION BY PROTECTING THE SOIL SURFACE FROM RAINDROP IMPACT AND REDUCING THE VELOCITY OF OVERLAND FLOW. TO FOSTER THE GROWTH OF VEGETATION BY INCREASING AVAILABLE MOISTURE AND PROVIDING INSULATION AGAINST EXTREME HEAT AND COLD. AREAS WHICH HAVE BEEN PERMANENTLY SEEDED SHOULD BE MULCHED IMMEDIATELY FOLLOWING SEEDING. AREAS WINCH CANNOT BE SEEDED BECAUSE OF THE SEASON SHOULD BE MULCHED USING ORGANIC MULCH. MULCH MAY BE USED TOGETHER KITH PLANTINGS OF TREES, SHRUBS, OR CERTAIN GROUND COVERS WHICH DO NOT PROVIDE ADEQUATE SOIL STABILIZATION BY THEMSELVES, CAN BE USED IN CONJUNCTION WITH TEMPORARY SEEDING 3.37 TREES SHRUBS. VINES & GROUND CO ✓ERS- STABILIZING DISTURBED AREAS BY ESTABLISHING VEGETATIVE COVER WITH TREES, SHRUBS, VINES, OR GROUND COVERS. TO AID IN STABILIZING SOIL IN AREAS WHERE VEGETATION OVER THAN TURF IS PREFERRED, TO PROVIDE FOOD AND SHELTER FOR WLDLIFE WHERE WILDLIFE HABITAT IS DESIRABLE. APPLIES IN AREAS WHERE TURF ESTABLISHMENT IS DIFFICULT, ON STEEP OR ROCKY SLOPES WHERE MOWING /S NOT FEASIBLE, WHERE ORNAMENTALS ARE DESIRABLE FOR LANDSCAPING PURPOSES AND WHERE WOODY PLANTS ARE DESIRABLE FOR SOIL CONSERVATION OR TO ESTABLISH WILDLIFE HABITAT SOB TREE PRESER VA BON AND PROLECITON. PROTECTION OF DESIRABLE TREES FROM MECHANICAL OR OTHER INJURY DURING LAND DISTURBING AND CONSTRUCTION ACTIVITY. TO ENSURE THE SURVIVAL OF DESIRABLE TREES WHERE THEY WILL BE EFFECTIVE FOR EROSION AND SEDIMENT CONTROL, WATERSHED PROTECTION, LANDSCAPE BEAUTIFICATION DUST AND POLLUTION CONTROL, NOISE REDUCTION, SHADE AND OTHER ENVIRONMENTAL BENEFITS WHILE THE LAND IS BEING CONVERTED FROM FOREST TO URBAN -TYPE USES, APPLIES IN TREE -INHABITED AREAS SUBJECT TO LAND DISTURBING ACBNTIES. 339 DUST CONTROL: REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION AND CONSTRUCTON ACTIVITIES TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WITH THE VESCH. ENT NBOL EROSION CONTROL * HANDBOOK SPECIFICABEONMNUMBER LEGEND ST ® STRAW BAIL BARRIER * 3.04 ROADS L 1 OD OV -O--o- TEMPORARY DIVERSION DIKE 1..11 O ST ♦HA`o°a♦ TEMPORARY SEDIMENT TRAP 3.13 SB ® SEDIMENT BASIN 3.14 0 lP e INLET PROTECTION 3.07 11 SF T X i,= SILT FENCE 3.05 CE r_j,__j CONSTRUCTION ENTRANCE 3.02 CD , CHECK DAM 3.20 FD inionninnionnin TEMPORARY FILL DIVERSION 3.10 J J OV 100 DIVERSION 3.12 y PS PS PERMANENT SEEDING 3.32 T TO TO TOPSOILING 3.30 - - - -aaa- - - - ClP I CULVERT INLET PROTECTION 3.08 ____f� 24055 OC OC DUST CONTROL 3.39 TSD 0 TEMPORARY SLOPE DRAIN 3.15 SA SAFETY FENCE 3.01 einionninnionninTEMPORARY RIGHT-OF-WAY DIVERSION 3.11 EXISTING CULVERT CULVERT DROP INLET & STRUCTURE NO. CURB CURB & GUTTER PROPOSED PAVEMENT II DITCH DEPTH OF EC-3A DITCH EC-2 DITCH DEPTH OF EC -2 DITCH EARTH DITCH DRIVEWAY CULVERT BENCH MARK CLEARING LIMITS VDOT STANDARD STOP SIGN EXIS77NG CONTOUR PROPOSED CONTOUR PROPOSED SPOT ELEVATION TBC DENOTES TOP/BACK OF CURB T/B DENOTES TOP OF BOX EROSION CONTROL NOTES ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. ES 2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. ES-3-ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. E S -4 A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. ES-5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ES-7: ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL 77MES DURING LAND DISTURBING ACT70TIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. ES-8-DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED WATER FILTERING DEVICE. ES-9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. General construction notes for Erosion and Sediment Control plans 1. The plan approving authority must be notified one week prior to the pre -construction conference, one week prior to the commencement of land disturbing activity, and one week prior to the final inspection. 2. All erosion and sediment Control measures will be constructed and maintained according W minimum standards and specifications of the Virginia Erosion and Sediment Control Handbook and Virginia Regulations VR 625A2-00 Erosion and Sediment Control Regulations. 3. All erosion .ad sediment control measures are to be placed prior to or as the first step in clearing. 4. A copy of the approved erosion and sediment control plan shall be maintained on the site at all times. 5. Prior to commencing land disturbing activities in areas other than indicated on these plans (including, but not limited to, off -site borrow or waste areas), the contractor shall submit a supplementary erosion control plan to the owner for review and approval by the plan approviall authority. 6. The contractor is responsible for installation of any additional erosion control measures necessary to prevent erosion and sedimentation as determined by the plan approving authority. 7. All disturbed areas me to drain to approved sediment control measures at all times during land disturbing activities aad during site development until final stabilrodioo is achieved. S. During dewmering operations, water will be pumped into an approved filtering device. 9. The cwuactor shall inspect all erosion control measures periodically and after each mnoff- producing rainfall event. Any necessary repairs or cleanup to 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. It. All waste materials shall be taken to an approved waste area. Earth fill shall be inert materials only, free of roots, stumps, wood, rubbish, and other debris. 12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance section 5.1.28. 13. All inert materials shall be tmnstim ed in compliance with section 13-301 of the Code of Albemarle. 14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to the hours of 7:00am to 9:00pm. 15. Borrow, fill or waste activity shall be conducted in a safe manner than maintains lateral support, or order to minimize any hazard to persons, physical damage to adjacent land and improvements, and damage to soy public street because o slides, sinking, or collapse. 16. The developer shall reserve the right to install, maintain, remove or convert to permanent stormwater management facilities where applicable all erosion control measures required by this plan regardless of the sale of any lot, unit, building or other portion of the property. 17. Temporary stabilization shah be temporary seeding and mulching. Seeding is to be at 75 lbalmor, and in the months of September to February to consist a 50150 mix of Annual Ryegasa and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May through August to consist of German Millet. Straw mulch is to be applied at 8011,0100sf. Alternatives are subject to approved by the County erosion Control inspector. 18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and match. Agricultural grade limestone shall be applied at 9011,01000if, incorporated into the top 4-6 inches of soil. Fertilizer shall be applied in 10001be/acre and consist of a 10-20-10 nutrient 'x. Permanent seeding shall be applied at 1801bilacre and consist of 95'% Kentucky 3l m Tan Fescue and 0-5%Pmennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be applied w 801bsIl OOsf. Alternatives are subject to approved by the County erosion Control inspector. 19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage or clogging to structural measures is to be repair immediately. Silt traps are to be cleaned when 50% of the wet storage volume is filled with sediment. All seeded areas are to be seeded when necessary to achieve a good stand of grass. Silt fence and diversion dykes which me collecting sediment to half their height most be cleaned and repaired immediately. 20. All temporary erosion and sediment control measures as to be removed within 30 days of final site stabilization, when measures we no longer needed, subject to approval by the COUnty erosion Control inspector. 21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of approval (Water Protection Ordinance section 17-2040.) 22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after the date the land disturbingactivity c mmenced. (Water Protection Ordinance section 17- y o 2mB) TgatE Sara arcs- erEMeo-..onus. rvgrvr nu _ LIMING REQUIREMENTS •9n¢RPeeenscossass .aarrON.S FOR TEMPO- aRES Remvurevded AWream E pvla finer Ira¢3 v�T RE. 4.2 3 bn per One S , T Feb. r5 saR. Mu., s.z w u z -"- so Tao 31.6 I con - acre -14-.1) an Savor Vc DSWC Fen rc. Apr. W 60-Tao GENERAL SLOPE (31 OR LESS) TOTAL LBS PER ACRE KENTUCKY 31 FESCUE 128 LBS Mpi-qua 31 RED TOP GRASS 2 LRB 'W SEASONAL NURSE CROP 2QLB_S 150 LBS SEASONAL NUR MAYFEBR1 THROUGH 16 THROUGH APRIL ANNUAL RYE MAY 1 THROUGH AUGUST 15 ANN AIL MILLET AUGUST 16 THROUGH EBRUAOCTOBER ANNUAL RYE NOVEMBER THROUGH FEBRUARY 15 WINTER RYE NOTES: 1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED By SOIL TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD, 3.32, 2, SEED CS TO BE MULCHED IMMEDIATELY UPON COMPLETION OF SEED APPLICATION, IN ACCORDANCE W/ NESCH STD 3,35, PS PERMANENT SEEDING SCHEDULE NO SCALE (STD. & SPEC. 3.32 OF VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK, 3RD ED.) DESCRIPTION OF EROSION & SEDIMENT CONTROL MEASURES: EROSION AND ENMEASURES IT IS ANTICIPATED TO USE CONSTRUCTION ENTRANCES, DIVERSION DIKES, EXISTING SEDIMENT BASINS, AND SILT FENCES WILL BE INSTALLED TO CONTROL SURFACE DRAINAGE. TEMPORARY SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE ACTIVITIES. 7EMPORARY STOCKPILE AREAS WILL BE MAINTAINED FROM TOPSOIL THAT WILL BE STRIPPED FROM AREAS TO BE GRADED AND STORED FOR LATER SPREADING. STOCKPILE LOCATIONS SHALL BE ON SITE AND SHALL BE STABILIZED WITH A TEMPORARY VEGETATIVE COVER. PERMANENT SEEDING WILL BE PERFORMED FOR ALL AREAS WHICH WILL NO LONGER BE EXCAVATED AND WHERE CONSTRUCTION ACTIVITIES HAVE CEASED. PERMANENT SEEDING SHALL ALSO BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR A YEAR OR MORE. SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. TEMPORARY SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR MORE THAN SEVEN DAYS. THESE AREAS SHALL BE SEEDED WITH FAST GERMINATING VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED. CONSTRUCTION ENTRANCE: A STABILIZED PAVED CONSTRUCTION ENTRANCE KITH A WASH RACK LOCATED AT POINTS OF VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE. TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE THE AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS. SILT FENCE: A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC STRETCHED ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED. TO INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERA 77ONS IN ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE TO DECREASE THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF FROM SHEET FLOW AS INOICA TED. THEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH). PERMANENT STABILIZATION' THE ESTABLISHMENT OF PERENNIAL VEGETA 77VE COVER ON DISTURBED AREAS BY PLANTING SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS TO PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT IS ECONOMICAL, ADAPTABLE TO SITE CONDITIONS, AND ALLOWS SELECTION OF THE MOST APPROPRIATE PLANT MATERIALS. TO IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCTION ACTIVITIES, ALL AREAS WILL RECEIVE A PERMANENT VEGETATIVE COVER. TEMPORARY SEEDING: THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING WITH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE PROTECTION TO BARE SOILS EXPOSED DURING CONSTRUCTION UNTIL PERMANENT VEGETATION OR OTHER EROSION CONTROL MEASURES CAN BE ESTABLISHED. DUST CONTROL: REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION AND CONSTRUCTION ACTIVITIES. TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE WITH THE VESCH. TEMPORARY DIVERSION DIKE. A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA WHICH DIVERTS OFF SITE RUNOFF AWAY FROM UNPROTECTED SLOPES AND TO A STABILIZED OUTLET, OR TO DIVERT SEDIMENT LADEN RUNOFF TO A SEDIMENT TRAPPING STRUTURF MAXIMUM EFFECTIVE LIVE IS iB MONTHS. ROCK CHECK DAMS: SMALL, TEMPORARY STONE DAMS CONSTRUCTED ACROSS A DRAINAGE DITCH TO REDUCE THE VELOCITY OF CONCENTRATED FLOWS, REDUCING EROSION OF THE SWALE OR DITCH. LIMITED TO USE IN SMALL OPEN CHANNELS WHICH DRAIN 10 ACRES OR LESS; SHOULD NOT BE USED IN LIVE STREAMS STORM DRAIN INLET PROTECTION. - THE INSTALLATION OF VARIOUS KINDS OF SEDIMENT TRAPPING MEASURES AROUND DROP INLETS OR CURB INLET STRUCTURES PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA; LIMITED TO DRAINAGE AREAS NOT EXCEEDING ONE ACRE, AND NOT INTENDED TO CONTROL LARGE, CONCENTRATED STORMWATER FLOWS. TEMPORARY SEDIMENT TRAP: A SMALL FUNDING AREA, FORMED BY CONSTRUC7NG AN EARTHEN EMBANKMENT WITH A STONE OUTLET ACROSS A DRAINAGE SWALE, TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS FOR ENOUGH TIME TO ALLOW MOST TO THE SUSPENDED SOLIDS TO SETTLE OUT. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. TEMPORARY SEDIMENT BASIN: A TEMPORARY BARRIER OR DAM WITH CONTROLLED STORMWATER RELEASE STRUCTURES WHICH IS FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. IT IS USED TO DETAIN SEDIMENT LADEN RUNOFF FROM DRAINAGE AREAS 3 ACRES OR GREATER FOR ENOUGH TIME TO ALLOW MOST OF THE SUSPENDED SOLIDS TO SETTLE OUT. IT CAN BE CONSTRUC TEO ONLY WHERE THERE IS SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY MAXIMUM EFFECTIVE LIFE IS 18 MONTHS UNLESS DESIGNED AS A PERMANENT POND BY A QUALIFIED PROFESSIONAL. OUTLET PROTECTION: THE INSTALLATION OF RIPRAP CHANNEL SECTIONS AND/OR STILLING BASINS BELOW STORM DRAIN OUTLETS TO REDUCE EROSION AND UNDER-CUTRIG FROM SCOURING AT OUTLETS AND TO REDUCE FLOW VELOCITIES BEFORE STORMWA TER ENTERS RECEIVING CHANNELS BELOW THESE OUTLETS. CULVERT INLET PROTECTION: A SEDIMENT FILTER LOCATED AT THE INLET TO STORM SEWER CULVERTS WHICH PREVENTS SEDIMENT FROM ENTERING, ACCUMULA77NG IN AND BEING TRANSFERRED BY THE CULVERT. IT ALSO PROVIDES EROSION CONTROL AT CULVERTS DURING THE PHASE OF A PROJECT WHERE ELEVATIONS AND DRAINAGE PATTERNS ARE CHANGING, CAUSING ORIGINAL CONTROL MEASURES TO BE INEFFECTIVE. SAFETY FENCE, A PROTECTIVE BARRIER INSTALLED TO PROHIBIT UNDESIRABLE USE OF AN EROSION CONTROL MEASURE. PERMANENT STABILIZATION: PERMANENT SEEDING WILL BE APPLIED TO ALL DISTURBED AREAS AS PER THE PERMANENT STABILIZATION OF THIS EROSION & SEDIMENT CONTROL NARRATIVE. AFTER CONSTRUCTION IS COMPLETED, ALL DISTURBED AREAS OF THE SITE WILL BE LIMED, FERTILIZED, AND SEEDED AS PER CURRENT VDOT STANDARDS. THIS SHALL CONSIST OF THE FOLLOWING: TOP SOIL - 2" DEPTH LIME - 2 TONS/ACRE FER77LIZER - 600 LBS/ACRE OF 15-30-15 SEED - ERNST 5311 CONSERVATION SEED MIX - ERNUX-114 (45 LBS/ACRE PENNLAWN CREEPING RED FESCUE, 375 LBS/ACRE ARGILS KENTUCKY BLUEGRASS, 37.5 LBS/ACRE PARK KENTUCKY BLUEGRASS, 15 LBS/ACRE ANNUAL RYEGRASS & 15 LBS/ACRE PLEASURE PERENNIAL AFTER THESE AREAS ARE STABILIZED THEY WILL BE MOWED AND MAINTAINED ON A REGULAR BASIS. MAINTENANCE IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. SPECIFIC ATTENTION WILL BE GIVEN TO THE FOLLOWING ITEMS: A. SEDIMENT BASINS AND/OR TRAPS WILL BE CLEANED AND MAINTAINED IN ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK. B. ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP THAT WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT, THE GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL BE REPLACED. C. ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO THE TOP OF THE BARRIER. D. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND IS MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED. EROSION CONTROL NOTES & NARRATIVE PURPOSE: THE PURPOSE OF THIS LAND DISTURBING ACTINTY IS TO CREATE THE MARTHA ✓EFF£RSON HOSPITAL APARTMENTS PROJECT. THE TOTAL AREA TO BE DISTURBED MTI THIS PLAN IS 1717 ACRES EXISTING SITE CONDI BONS ]HIS SITE IS CURRENTLY A MIXTURE OF W XV)S AND GRASS AND DRAINS TO EXISTING WATERWAYS LOCATED TO THE EAST, WEST, AND SOUTH. AN EXISTING GRAVEL ROAD EXISTS ON -SITE EXISTING PRE5ERV£D STEEP SLOPES EXIST ON -SITE. ADJACENT AREAS: THIS SITE IS BORDERED TO THE NORTH BY PETER ✓EFFERSON PARKWAY TO THE SOUTH EXISTS THE RIVANNA RIVER AN EXISTING COMMERCIAL PROPERTY EXISTS TO THE WEST A CURRENTLY VACANT MIXED -USE COMMERCIAL LOT EXISTS TO THE £AST OFFSITE LAND DISTURBANCE NO CON57RUCTON ACTI TEE ARE PROPOSED OUTSIDE OF THE LIMITS OF DISTURBANCE ALL OF}-SIi£ WtlRK SHALL BE CONFINED TO PUBLIC RIGHT-OF-WAY AND EASEMENTS CRITICAL AREAS: CARE SHALL SE TAKEN TO PREVENT CONSTRUCTION RUNOFF FROM ENTERING THE EXISTING PRESERVED STEEP SLOPES. RIVANNA RIVER AND ADJACENT PROPERTIES 5_0AA SOILS MAP IS INCORPORATED INTO THE PHASE I EROSION CONTROL PLAN WN SOILS DATA INCLUDED WITH THIS NARRA BV£. SEQUENCE OF CONSTRUCTION: 1. NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE-CONSTRUCTON MEETING AS REQUIRED, 2. ND EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS WITHOUT THE APPROVAL FROM TILE INSPECTOR ON TIE PROJECT 3 INSTALL THE PAVED CONSTRUCTION ENTRANCE WITH WASH AREA AS SHOWN ON THE PLANS CONSTIOCTION ENTRANCES TO BE INSTALLED WHERE CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED PUBLIC ROADS, PRONSIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR) RRACKING ONTO THE PAVED SURFACE WHERE SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED TLORO/GHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TItANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN TITS MANNER 4 INSTALL TIE INITIAL CONSTRUCTION MEASURES AS SHOWY ON THE PHASE I EROSION CONTROL SHEET THIS INCLUDES (1) CONSTRUCTION ENTRANCE, (2) SEDIMENT BASINS, (2) SEDIMENT TRAPS, CCIVSTRUCTION ROAD STABILIZATION, SILT FENCE INTENDED D/VERSION DIKES. MEASURES INTENDED TO TRAP SEOIM£NT SHALL BE CONSTRUCTED AS A REST STEP WN AMY[ NO DISTURBANCE ACTINTY AND SHALL BE MAD£ FUNCTIONAL BEFORE UPSWE LAND DISTURBANCE TAKES PLACE 6. ONCE TIE PERIMETER EROSION CONTROL MEASURES HAVE BEEN INSTALLED AS SHOWN W NE PHASE I EROSION CONTROL PHASE PLAN, CONTRACTOR SHALL INSTALL ANY REMAINING ESC PHASE I CONEIRUCBON MEASURES AS SHOWN ON THE EROSION CONTROL SHEET, INCLUSIVE OR TEMPORARY SEEDING & DUST CONMOL AS NEEDED, 7 PERMANENT OR TEMPORARY SOIL STBILHZATION SHALL BE APPLIED TO DENUDED AREAS MTILIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WTRAN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT fl GRADE BUT MLL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. B AFTER INSTALLATION OF ALL OF THE PHASE I ESC MEASURES, THE CONTIACTCR CAN CLEAR TIE SITE 9. ONCE ESC PHASE HIS COMPLETE, THE CONTRACTOR CAN PROCEED TO ESC PHASE /I. THE CONTRACTOR SHALL ENSURE THE PERIMETER DIVERSIONS MAINTAIN POSITIVE GRADES AT ALL TIMES & DISCHARGE INTO THEIR RESPECTIVE EROSION & SEDIMENT CONTROL TRAPPING DEUCES on CONTRACTOR SHALL INSTALL INS ESC PHASE Il CONJUNCTON MEASURES AS SHOWN ON THE EROSION CONTROL SHEET, SHALLSHBE CONSO-CCT£D ASEA R 5& TI CONTROL LA D(STURBAEC£ ACTNTYAAND SHAL £TUBE MAD£mFUNCTRWAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACEY LAND DISH N 11. DURING BIIS ESC PHASE a ROUGH GRADING OPERATIONS CAN BEGIN. 12. ONCE TIE SIT£ HAS BEEN ROUGH GRADED TO TINE POINT WHERE SEDIMENT IRAP 12 CAN NO LONGER REMAIN, TIE CONTRACTOR CAN FILL MIS ]RAP. TILE REMOVAL OF SEDIMENT TRAP X2 SHALL NOT OCCUR PRIOR TO THE APPROVAL OF THE COUNTY INSPECTOR DEWATERING OF SEDIMENT TRAP /2 SHALL SE COMPLETED IN ACCORDANCE ]NTH MINIMUM VESCH SPECFICAr- I3 PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS MTHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WTHIN SEVEN DA Y5 TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER IHAN 30 DAYS PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR 10 THE CONTRACTOR SHALL THEN PROCEED TO ESC PHASE A CONTRACTOR SHALL INSTALL THE ESC PHASE 111 CONSTRUCTION MEASURES AS SHOWN ON THE EROSION CONTROL SHEET, INCLUSIVE OR TEMPORARY SEEDING & DUST CONTROL AS NEEDED PERIMETER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CDMLRUCTED AS A HAST STEP ]NTH ANY LAND DISTURBANCE ACTINTY AND SHALL BE WOE FUNCTIONAL BEFORE UPSLDPE LAND DISTURBANCE TAKES PLACE H THE CONTRACTOR SHALL COMPLETE THE ROUGH GRADING OF THE SITE IN ESC PHASE A 12 FOLLONW THIS Tl£ CONTRACTOR SHALL FINE GRAD£ THE SITE AND INSTALL ITIE UTIUTI£S CURB & GUTTER, SIDEWALK, BUILDING & PARKING PADS AND REMAINING INFRASTRUCTURE 13 INLET PROTECTION SHALL BE INSTALLED ON ALL STORM SEWER INLETS AND YARD DRAINS IMMEDIATELY FOLLOINNC ThEIR INSTALLATIONS ANY DRAINAGE SYSTEM FOUND TO BE CLOGGED OR CONTAINING SEDIMENT DURING CONSTRUCTION SHALL BE CLEANED PRIOR TO THE COMPLETION OF ME PROJECT 14. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS {.THIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE ATE TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WTHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT MILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR 15 THE PERIMETER DIVERSIONS, SEDIMENT TRAP P. SEDIMENT BASIN [i AND SEDIMENT BASIN /2 SHALL REMAIN FUNCTIONAL AS LONG AS POSSBLE. AS DEAGNED. THESE SEDIMENT TRAPPING DEUCES SHALL NOT BE REMOVED PRIOR TO THE PPROML OF THE COUNTY INSPECTOR. I6. ONCE THE SITE'S CONSTRUCTION IS COMPLETE, AND THE PROJECT lS FULLY STABILIZED, SEDIMENT TRAP j1 CAN BE REMOVED, SEDIMENT BASIN %I CAN BE CONVERTED TO A PERMANENT SWM FACILITY, SEDIMENT BASIN #2 CAN BE CCNKRTED TO A PERMANENT SWM FACILITY AND THE5E FACIUTES' PERIMETER DIVERSONS CAN BE REMOVED. DEWATERING OF THESE FACILNTE5 STALL BE COMPLETED IN ACCORDANCE WITH MINIMUM VESCH SPECYHCA TONS 7. NO EROSION CONTROL MEASURES MAY SE REMOVED DURING THE CONSTRUCTION PROCESS MTHOUT THE APPROVAL OF THE INSPECTOR ON THE PROJECT 1B. MAINTAIN ALL £ROSON CONTROL MEASURES AS SPECIFIED IN THE NRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK, REMOWNG DULY WHEN APPROVED BY THE LOCAL PROGRAM ADMINISTRATOR IN ACCORDANCE MM TIE VRGINIA EROSION ND SEDIMENT CONTROL HANDBOOK. 10 ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED MTHIN 30 DAYS AFTER Fl SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED. UNLESS OTHERMSE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. (RAPPED SEDIMENT AND THE DISTURBED SIX AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. 20 ONCE THE SHE 15 STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR CAN REMOVE THE REMAINING EROSION CONTROL MEASURES NO ITEM SHALL BE REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED AND TIE INSPECTOR GIVES PERMl55/ON. IL SOIL DESCRIPTION 72C3 - RABUN CLAY - SEVERELY ERODED 79, TO 159 SLOPES. THESE DEEP WELL DRAINED SOILS ARE FOUND ON GENTLY SLOPING TO STEEP RIDGES AND MOUNTAIN SLOPES MODERATE TO RAPID RUNOFF, WITH MODERATE PERMEABILITY. 72D3 - RABUN CLAY - SEVERELY ERODED, 159 TO 259 SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON GENTLY SLOPING TO STEEP RIDGES AND MOUNTAIN SLOPES. MODERATE TO RAPID RUNOFF, WITH MODERATE PERMEABILITY. 73D - RABUN VERY STONY CLAY LOAM - SEVERELY ERODED, 159 TO 259 SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON GENTLY SLOPING TO STEEP RIDGES AND MOUNTAIN SLOPES. MODERATE TO RAPID RUNOFF, WITH MODERATE PERMEABILITY. 73E - RABUN VERY STONY CLAY LOAM - SEVERELY ERODED, 259 TO 459 SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON GENTLY SLOPING TO STEEP RIDGES AND MOUNTAIN SLOPES. MODERATE TO RAPID RUNOFF, WITH MODERATE PERMEABILITY. W - WATER TEMPORARY SEEDING ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR EXTENDED PERIODS OF TIME SHALL BE SEEDED WITH FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING GRADING. SELECTION OF THE SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR AND WILL BE APPLIED TO DISTURBED ARES THAT WILL NOT BE BROUGHT TO FINAL GRADE WITHIN 30 DAYS. PLANTS SHOULD BE SELECTED APPROPRIATE TO THE SEASON AND SITE CONDITIONS FROM TABLES 331E AND 331C. NOTE THAT TABLE 331E PRESENTS PLANTS WHICH CAN BE USED WITHOUT EXTENSIVE EVALUATION OF S17F CONDITIONS TABLE 3.31C PRESENTS MORE IN-DEPTH INFORMATION ON THE PLANT MATERIALS. TO CONTROL EROSION ON BARE SOIL SURFACES, PLANTS MUST BE ABLE TO GERMINATE AND GROW. SEEDBED PREPARATION IS ESSENTIAL. AN EVALUATION SHOULD BE CONDUCTED TO DETERMINE IF LIME IS NECESSARY FOR TEMPORARY SEEDING. TABLE 3.31A MAY BE USED TO DETERMINE THE ACTUAL NEED ALONG WITH SUGGESTED APPLICATION RATES. - FERTILIZER SHALL BE APPLIED AS 600 LBS/ACRE OF 10-20-10 (14 LBS/1,000 SO. FT.) OR EQUIVALENT NUTRIENTS. LIME AND FERTILIZER SHALL BE INCORPORATED INTO THE TOP 2 TO 4 INCHES OF THE SOIL IF POSSIBLE. IF THE AREA HAS BEEN RECENTLY LOOSENED OR DISTURBED, NO FURTHER ROUGHENING IS REQUIRED. WHEN THE AREA IS COMPACTED, CRUSTED, OR HARDENED, THE SOIL SHALL BE LOOSENED BY DISCING, RAKING, HARROWING, OR OTHER ACCEPTABLE MEANS. TRACKING WITH BULLDOZER CLEATS IS MOST EFFECTIVE ON SANDY SOILS. THIS PRACTICE OFTEN CAUSES UNDUE COMPACTION OF THE SOIL SURFACE, ESPECIALLY IN CLAYEY SOILS, AND DOES NOT AID PLANT GROWTH AS EFFECTIVELY AS OTHER METHODS OF SURFACE ROUGHENING. SEED SHALL BE EVENLY APPLIED WITH A BROADCAST SEEDER, DRILL, CUL77PACKER SEEDER OR HYDROSEEDER. SMALL GRAINS SHALL BE PLANTED NO MORE THAN 1}INCHES DEEP. SMALL SEEDS, SUCH AS KENTUCKY BLUEGRASS, SHOULD BE PLANTED NO MORE THAN 3 INCH DEEP. OTHER GRASSES AND LEGUMES SHOULD BE PLANTED FROM }INCH TO } DEEP. SEEDINGS MADE IN FALL FOR WINTER COVER AND DURING HOT AND DRY SUMMER MONTHS SHALL BE MULCHED ACCORDING TO MULCHING, STD. & SPEC. 3.35, EXCEPT THAT HYDROMULCHES (FIBER MULCH) WILL NOT BE CONSIDERED ADEQUATE. STRAW MULCH SHOULD BE USED DURING THESE PERIODS. AREAS WHICH FAIL TO ESTABLISH VEGETATIVE COVER ADEQUATE TO PREVENT RILL EROSION WILL BE RE -SEEDED AS SOON AS SUCH AREAS ARE IDENTIFIED. STORMWATER RUN-OFF CONSIDERATIONS: STORMWATER MANAGEMENT.THE STORMWATER RUNOFF FROM THIS PROJECT DRAINS TEMPORARILY TO THE PROPOSED SEDIMENT BASIN & SEDIMENT TRAP. THE SEDIMENT BASIN WILL BE CONVERTED TO A PERMANENT STORMWA TER MANAGEMENT FACILITY AND THE SEDIMENT TRAP WILL BE REMOVED AFTER THE DEVELOPMENT OF THE MARTHA JEFFERSON APARTMENTS PROJECT. TH 0 1�t �P_ H O SCOTT R. COLLRd54 U No. 35791 a I �¢ O� t `SZONAL 8 LI Q\ V LEI Z a W W Z L9 Z W Ul Z - tJ J U a1 F- z LU G 0 z LU G Q z Q CL cL G Ln L) F- z LU G Q CL a J F- CL U) 0 = z 0 U) LLJ U_ U_ LU Q _ u sQ O ` Ltd F- a z J 0 z 0 U H z LU S LU Ln 016 z _0 Lr) 0 II LU 172131 SCALE AS NOTED SHEET NO. 3 PropGWHAymtren6-Sbdpik Aree Pen Sheet No. Deegzr AML, BE a" 1 M 1 Culvedln Rev. Dab NO 0118 ARWC.-Is STATION: HYDROLOGICAL OATH: 100 yr. F"pleb elev. Design AHWdepb eW. Sf .- ew eeq. - TMW CulvertlPi: DA=2.07 ac., Qw-0.45, Tc=9.5 min., 2-year Q=3.96 cfs, 10-yearQ=5.31GIS ' SMutler ekv. 414.00 = CL elev. 414.M DISCHARGES USED RISK ASSESSMENT ADT Slrew ° Cover ` 0 2 3.96 CFS Nlo-An.- LangH D 10 - 531 CFS Ove,bppng Sb9e U CFS Flood Pbb MI Mv. a. 412.00 So= 4,00% bv.BE 41C.00 D - _CFS D = CFS CrMris aM StI lnpatl pg. Gr. Elm L= MR pg. Gr. Ekv. HEADWATER COMPUTATIONS CONL OUTLET EW INLETCONE DUTLETCONTROL CULVERTTYPEBSIZE 0 pa HW. VELO CITY T_ COMMENTS HIM HW Re do BIaDp W H Ibo HW EIEV. C.M, S-1, Proposed 18' CMP Cebed(2 y4 3.96 13.96 0.80 11 OS 0.6 0.93 0.93 02 2.0 -0.9 1.2 5.87 ES 1 VDDi STO.EC-1CIm A10eMIPmY[1m Proposed 18' CMP C&W(10 yr) 5.31 5.31 0.95 1A 0b Ob 1 im Im Ob 20 -0.4 1.4 6.35 .1 ; ' m 1[ 0+111 1� I l II� I p IT" �' -Sediment Trap #1 Design MATCHLINE, SEE SHEET 4B FOR ESC I I drainage area (acres) (<3) 1.23 TH MEASURES FORSANITARYSEWER & I I / trap whin- OF yt SIDEWALK IMPROVEMENTS I I I I I elevation (ft) area (sf) wlume(cf) wlume(cy) p 111 1�II ID /� 408.00 394.0 0 0.0 �eeTerne. �e 410.00 726.0 1,103 40.9 eersremer - pSCOTTRCOLLINSz 412.00 1141.0 2,955 109.4 U No. 35791 ,a 414.00 2253.0 6,286 232.8 q \\ \ wrrsroNAc ° ONAL til \\\ \l w rtoJr m ao �. L b \ wet storage: wet storage required (cy) (67'DA) 82.4 SU,PPOIRT SF. I}i I I I r / //�>((\\,\\\R\\ bottom of stone weir (R) 411.20 •sr w,e vn-.�a�.re a.>s...,w w/ WIRE F�\ wet storage Provided at this elowtion (cy) 82.4 ou r� �y ■��\y(�A. _ slope of wet storage sides 1:1 / / r SUP ORTi *■ ■/ ♦♦�q� 1 \\\\ weir length In)(6)DA) 7.4 \\ dry storage: botom of trap elevation (ft) 408 \\�\\�Q \ storage required (cy) (67'DA) 82A bottom trap dimensions: 71'xT / / j - ■ 1 \ \ \ \ \ \� \ crest of stone weir 413.00 top of dam elevation (ft) 414.00 dry storage provided at this elevation (cy) 88.7 top width of dam (it) 2' / EXISTING TREELINE (TYP.) I 4 I \ \ \ \ \ I\ \�\ \ \\\\` \ \\\ slope of dry stora a sides 2:1 top trap dimensions 115'YL3' \ / i _ „vvIvPvvvvvv v x 13 \ v V) / E�T I S�1 A \ Q\� 1 , A A V \ V� -A Q 2 �� II MM - 3H�E FbR; \ � r PROPERTY LINE \ \\ \\\ \ a p u DESIGN A�s��H1 s�a� I ` I 1 ��\�A q'P,py��F - , a Q -� o x u, DETAILS I D -�.z�i I r�s K - - -- V -- - z a�FF 1 � A � ° c�� , - - - - - - - / / / FSIf�N A 1.23 � � _ N o ---- _-- _ = __ --- -%Ate 1 UPORrsF //// /i /,//�%///I/ � e /o/I s LU _ _ -�. • / l// / - / / f� / / j \j\\ w AMENDT EDLMI SOF / LOCATION OF CONTRACTOR PARKING & A♦• \\�\\ / DD ♦� DISTBANCE17ac .17. / STAGING AREA WITH PORTA POTTIES. I \ ♦♦ \ \ V A - - - - - - --_ _ A i / / • AND FUELING TANK ♦� x V A\\ / CJ DUMP6TER, A � \\ _�_-_ - - - - � � - _ - � - _ � � \ � �- � �_ i � �i � � i ' � / / l.. � / I / / I � � �♦♦�. V A A vi.e \ � V APPROVED \ ---�-; �� - - -`�_ �99�i i� ��%�i /////-�/ / liL I 'i �� ..�■ ♦ A \ \ WASH RACK` �M/ I I _ 12x70'MIN. _ z0� TM; 78 � �DTP //-=_� % �� - - %�y�/�`0/ / / / •. �I I I \ \ \Y L \ \ \ / / ;a60� / - - - - --- -- i�_Stati-FamD�etua/t . �I I I FLOW\ DIRECT.IONN/-- v �nsPradcS � ARROW(TYP) -D 7 D B. 669 p_a5a57 la �i P RREE CLEARING(TY) ♦•� � I♦ I A \ � \\ � � I I /_ / �_47(Y __-- / ��_-� - - _- o � E - / - �� % // // ♦ I I V A d // ��- -- EXIST NG �s Is IY OE - ,.� �/-c �,j/ ��/�/ / /i///�,// //ii/ / j�/s6,°-�-_�-i//_ q-_ _ ♦ - ♦ A / ♦••••; \1 � /I /I I II I ♦I ♦�I II I I IV D STEEP SLOP - TCONTRACTOR ENSURE POSITIVE DRAINAGE RAINAGE DIVIDE I/IDE �IT\ -P\v \) /U OWNE-360� TPg/I11 SF NAION DRAINAGE ALONG DIVERSION BERMS 4I`PP=PRO_VD _ ES/C-\ PH HI -C/O MUTUAL I A RLE \SB #1 DA= 8.54 COMMERCIAL OFFICE- CR SPP VEDBAS0IN DA /=�i/ /- - \ - _-t ■■ -=_- ---- --- - _-- - --- --- - - =_ ® M LrLZONING(AIACREAG: 1g8AE \ZEAR12.001)-4475/728 •o' l c _ y .. / / - - _ // i �_ • I /// / / / / �// // /// ,./ W PCD ROPOSED SAFETY FENCE ♦ - - // / / / // // / • / N Z a ({�-O--RI-C■J�� i AROUND SEDIMENT TRAP ' ,� r ,// r I ♦ \ CUP; - - l l \ \/ // /// x P Illl/l/l// ///////// / /� �\� Q � _ • APPROVED ESO PH Ia 4X ♦ _ rr`"� / // I / / / / - - i. / �,� aI) �-� - ��, sF ♦ / /� IR I I II AI I I II,M,.♦I176i/aD'. � y . MENO,/�//ji r/�///'.I /I I/ / /II/I///I,�// // // / /// /////�//// /// / ////// //////////i/////i/ /♦// ✓/// / ///%/ / i \ � �x. �®J Ed o�6lGN 4644 � WI/WIRE _ a� 0 SUPPORT E DRAINAGE AREA=2.07 ACRES SOIL DESCRIPTION(TYP.) C18-CMP,50.00'@4.00%,w/(2)ES-1 �; /"y� '/ r / Oz - T - / / I \ I \ \\ \\\ `\�'_�_--♦%I \ \ PROTECTIONN wl/ GE0TILENFVILTOEUR T=410.00\ TMP07800-00-00-020M3 / I \De�l %/ / \\\ \\ LLI zx e�/ /d/ _ � APPROVEDCuss Al OUTLET OWNER. MARTHA JEFFERSON HOSPITAL O 3 EX i, r. RI®PRAP OP i i ♦ / / / / / / /BE RE-ROUTED AS SHOWN, �A (Lk,' ., ., ZONING GE PLANNED DEVELOPMENT MIXED EXISTING GRAVERE' ELINE (TYP/j. \ \VQJ W ACSEE SHEET 8 FOR z a i V A A v -� AND OUTLET PROTECTION ETAILS / i i r �/ / T& ♦� 5PP5 �.A� v A Xl V\ /Sb'I L LINE (T� IP.)'' DDLu DESIGN &D \ Q EXISTING / ♦ - - _ Q {� \ - \ VA \ \ AA / / I I I I Xti / / / / / V A V U I--1 v TREE Q / _ (TYP.P.) / I / PS APPRO�C'PIiIELI �Q\ < L U _ IMP T.JQ EGN / 48RSTANDPIPE t2 / BUFFER OSERVE AS RISER W/ APPR 9D STOCKPILE AREA PROPOSED o STRUCTURE / P/6 / / .� \ - - - _ �\ \�\\\ / // // _ CONTRACTOR TO ENSURE POSITIVE / / / / I l I I I I / / I ` Z T dN RRo o�sL EAMaANKMVE AS RISER RISEt1 POUNDAnoN; ♦ / / /APPROVED SAFETY FENCE / / / - A ----- __ APPROVED BAFFLE �� VA // ///j �� D�,A-INAGE ALONG DIVERSION BERM / / I I I I I / / / / / O w DPrENr E ♦ / AROUND SEDIMENT TRAP / / APPROVED SAFETY FENCE /// 7 w BARREL OUTLET PROTECTION E SPILLWAY AT THE TIME of RWD �♦ I / / / �_*_. IT / -.� _ -� AROUND - VA / / I I I I I I / _- _ Z LLI V F AROUN TBASIN rV WATERTIGM DURING ESC PHASBASIES.CONVERGION OF BASIN I ID �' ( \\ I . / \ / /� \ - - - - '\ \\ \\\. .� -�// / / / I I I I I I I I I I / / I Imo\ O O \ \ \ LOW FLOW OFFICE SHALL BE PERMANENTLY BLOCK D ♦ i \ \ - - \ til I I / / / / \\ \ cy J \ \ s • \ • - - - - \ / / \ \ i I I / / - Z Lu \ \ \ \ ( OR APPROVAL - I / \ \ \ N DETAILS. p ♦ \ • \ - _ \ / / / �I�.//II/ I I / TI I � ♦ A � ♦ � `r - - - - AAVA � -�/ � - � � -�/ I I � / / � O \ A ' s sHe TSFORflooi IOry oeslG � SHALL LV OCCUR AFTER E C INSPECT � F PROPOS V A V A A\ V A y�l \ v �•• ♦•v�.�/'//�� D v�- - -- - � � �� -// 7b/ II mlI II I / / / a' \ \ \ VA V ALLJ PPROVED STOCKPILE AREA , �, / ■ ♦ I I / - •N /� ♦ A - - - A V ( / _ ♦_ \ - \ DRAINAGE DIVIDE TYP / / I / Q LL TO BE ENCOMPASSED BY \� \ \ ♦ - _ - \ \ / I LL SILT FENCE AT ALL TIMES y ♦♦ ■■I��I..� / ♦ \ \ �� _ ) / / // / / v 40 I111 /I f C) L11 CONTRACTOR TO ENSURE POSITIVE - \` _ ♦ ■ \ - - / I I' / / // DRAINAGE ALONG DIVERSION BERMS. - \ ♦ - - _ 1• / \ \ - ♦�♦ - � - J /�/ / l / / I / / - 0 � V A V AA � � �� . \ � � � � -� /9D /� - ,v ■rr■■■■ __ ,die �-__ � \ � � / / o d & Dev {rr{ L, / / SUPPORT Sf \ - .D�2$da P 244-573 l Ir�ai \\\ \ \ '\ LIMITS OF PROPOSED - / j/ \\\ \\._ f.. - \ �. rG �R -Cam=/ //// / / � Q \ \ D. D.O� v 72 B (Piatj D(T )- �A, �� \ \ � - / EXISTING GRAVEL ROAD - �•-'- \ - - I \ _ �_� � / � / /� / W \ \ \C3T - �c vv n s - / � - F RE NE OP -SUPPORT - -�� _ _ - - - _ /UAP / 172131 INUNDATION ZONE - - - - - - - z� �j1 / / / SCALE \ - _ - - -�� - - 1 "=50r �' so- m oo zoo � APPROVED VDOT CL. 1 RIPRAP WITH ` - �- \. a RCP BARREL _ - - / \ j CONNECT TO EXISTING , - FILTER FABRIC UNDERLAY SEE - _ - - - SHEETNO. _ LIMITS OF DAM INUNDATION -NE TYP. APPROVED SHEET 7 FOR DETAILS. - ( )' / / � GRAVEL DRIVE `, - - - - - - m N � �� x� 1 - - � '_�/ tL�an-yo � / // q v A /, I�ii III II 'YI �4r / MATCHLINE, SEE SHEET 48 FOR ESC TH p � � � � � I MEASURES FOR SANITARY SEWER & l O \ — — / ' / / / / / a� / / I I E 11� f a SIDEWALK IMPROVEMENTS Q 1 / ��/��/i6�.a��r i�� scorr R.col.r,Wsz w/ v — _440-00 - WIRE i I SLIpOoR� SF �I EXISTING TREELINE (TIP.) ■ I I \ \ \ \ \ \\N\ \\ ¢80� I \ Q \� (A — V v Z i o i • �V AV . A\ \VVA V A / A z / i o �.� a f l Q_ -WIRE I /Q/ J \\ / �/ / SUPPORT SF / // / / / / Q QLu AMENDED LIMITS OF / ■ s 1 ce -- -_ \ _- - k u i l / �/ // 3 _ DD ISTU- ANPE 171� 7a� _ — — 0 / I I — / — — — — — _ — — / LOCAT O OF CO TOR AR IN — — — — — — — _ _ \ i / ^! • STAGING AREA WITH POTTIES R, ANDD FUEL FUELING TANK IA V A — — ----�TIs�za�' A t6lnsurerfce __' ,— --- — —� — D. 665 p..555, p�s�v7 lob.} -/� / — — — — -- - i LIMITS OF PROPOSED TREE CLEARING I� I \ 1\ 360 (YP.) EXISTING PRESEVE♦ ♦I � I\ \ �QI \— 1 _71_ STEEP SLOPES — _ / — — _ - - CONTRACTOR TO ENSURE POSITIVE � ♦ � � — � \ \ � \ � / / / // / / // —_ — — DRAINAGE ALONG DIVERSION BERMS - TP ♦ _ \ — / // // // i — — _ — _ 1- - �— — 0' _•♦• 1 I♦ I \ l \ \ AMENDED ESC )'H II — — / / / / / - M OR \ \ SB #�i DA=10.41 ac. / / // // W (AP 4�2 / � 1 PR VED DESIGN / — �� \ A 1 .�OaSd LLJ _ — — // / I • v v / / / / / / �/ / // /// / — < PROPOSED SAFETY FENCE '/ ♦ / /j \ 7 C / / Q \ \\ c \ I I I \ / // / / / / / / // // / // ///// / // \ CNI N Q m AROUND SEDIME TTRAP ♦•� / \ Q \ 1 / / / / / / / / / / / / — — 0- �_ _/ / ////i i / l / //// /i//// / ✓/ / /— uOIRSF/ --�v\ � /O sPPIU> z o I I R I I 1 _ Q //i ii//// / / / / l / / i/ I l /v� L.0 // jj��Sj// //EE/ SH/ /// / //®,// O•• Tv ♦Fx- B / / / /I \\\� J • \� \\ \^L \ F(L-8',W1T=IA.5',W/2-9.5',D- 1.5'MIN. \ \ '0 \ 1 I I /1/1 I/ I /I // / / /I // / ~~ vn, APPROD CLASS LLcG�"LPRBORICCUNOIRLrl'EEZ VLLMNT -J EETSFEXISTING � 3oa AND OUTLET PROTECTION RR — \ \ \ \ \\ \ \ i i /// / I I I I Ill I I I I I l I / / / / / "�\ \ Q ED E \ DESIGN &DETAILS • / / / / / / / \ \ \ \\ \ \ \ '� I I / / / / _ / ( EXISTING Q TREELINE ® l / • �}Q� \ \ \ — \\ \\\\\\ \ \ �� _ — / // i — J/ // �I (TYP.) / I • L v v\\ vvvv — // — / I I I / A v ° Il/ • l 111 I I % \ v�LLJ l I / / / AMEN ED S_ II I _j E I .BUFFER I I I / o,/ ■ APP OVED E N� �_ A �.—�\� �� / / /— —\/ • / / / I I / V w a 100' STREAM / I I p I /// .,. .- \\ TO SERVE S RI ER STRUDCTIU� _` \\� \ // // � - \.... I � • � / I I � � I I I/ / � (I 1 � = \ � • ■ C� Q (n o E // -- \ _ U � ® I\ �TOTc,,SEROE AS RISER STRUCTUIRE /ANAENDED ESC PH II ) \ TO ENSURE POSITIVE I I I I I I l / I \ ` �_: O p�ryRACTOR SMALL INSTAL THE PERMANENT oav / \ I\ I1 � I\ aARTRHEE T.oEMPOTRAPRRY OSTEEDcIMnEoNNT 6BASIN'S CONST�RUCT7IOMNFFff. oP W �• �. I 1 /D / / I /I //SB D#,P4DD6A.0-42.68'ac. ♦••�♦/ // // /� / \ \y \ \_ _ _ ----- ---- -- r _. - - - _ _- -- APPR VrEB A--- _ ___L�ARO .E\D SAFETY FEN_CE, ////////////�- _ - DR—I—NA--GE ALONG DIVERSION BERM wEnELL EMBANKMEN I'- rATTMEOUND SEDIMENT BAw 3L NARS i..y w \ O \ WATERTIGHT DURING ESC PHASES.CONVERSIbN FBSASIN I . 1 I ♦• DC / r` ,-- \ \\ J //// \ \ \ \ I I I I / / z LU o I \ ®\ PERMANENTL BLWCK D I _ yn\\ \ \ LL BE 1 \ � \ ,SHALL ONLV OOCt1R AFjER ESC INSPECTOR(�PP�OV L. I r \ - � \ _ _ / / I I / v,r/� V V A ® � ET\FV AD \\ \y \ �� \\\ V A A �\ •• `O •• — — / / T _ _ _ - - _ -- - ----- - - -� / / TIC /� I I �� / / ///� w� z v \ \ \ \ PROP BAF,FLf� l I C♦� \ \ \ \ �� // / A V A V Av A A V A V V� ♦�� •♦' / d E v vvv \ VA \� vv v v v vv A \ - - .,li..l � - _ - •• � v v - - — — _ — / // I 1 l � � I I � � I /�— � LL v v v v v v v Vv // ! v - — v V v�V A VAA\\ ,�:. vvv � v\ \vv _— -- �' � v � �• - � —� — /� lI II / � a w/DD WIR€ ♦ - •+ / // / V A \ MF �a zoron. --- - v 7t� / / i' v v \ \ V A v \ v v v suPPORr sf • — — — // / / / / l / < E \ \\ \ \\ \ woe Lard D to L\ \ — — — — — / / / / / / zs44 ap. z4. \ \ \\ \ \ \MI \ \ . T. •'1�� — -sss �i / / // / /// l// C Q \ \\ z5 \\ \ LIMITS OF PROPOSED - — _ — — / TREE 0 — — — — — —//% —JOB NO. o A F �CWWIRF --� e_-4e —i/ �P //// �172131 V �, v \ A OOv v V • OP SF T �` -SUPPORT — — — — — // IMITS OFF INUNDATION ZONE — — —_ _0. —_ — — — — " / / / SCALE APPROVED 30 - -- — — _ — — —370— — / 1 u-J�� APPROVED VDOT CL I RIPRAP WITH ` _ — — = — — — \VA RCP BARREL — ��— / SHEET No \ _ FILTER FABRIC UNDERLAYMENT. SEE / APPROVED SHEET 7 FOR DETAILS. — LIMITS OF DAM INUNDATION LONE (TYP.) t/ 4A r / ( / \ d / / /kETHISjULgH( IyI I \ TH o� p \ \ / -, �.; �°/// lod / l II I IIIIIII111\\Ib II Illlllll / \ o t� �scorr R. col.r,Wsz a CONC s \ \ a 4 /---� \ , 9IIGf� D�--. —44G— Q Z wl WIRE u,PPORT \o ° /160 o // a'llou �l EXISTING TREELINE (TYP.), I I I PI \ I \� � \ 480— (A � t � IIII I QN 20 _6- 11 QnfALu o � w/ WIRE / AMENDED LIMITS OF / Q / / Q LOCA ' DID I l / / �� / / I �� / DI BANE = 17.1� 7a=. � � � 3 \ / ------- STAGING ARE WI ANDFUELING TANS •� ' \ l/l/l 111 Jll ill llll I l�l — — TION OF CONTRACTOR PA OTTIE _ STAGING AREA WITH PORTA P I � / 11 l � 4 �� _ — _ � "�i i 'i �i — ,. /i / 1, I� I I I �� , `� � o \ \ I ♦, / -� _ _ o v llI l /lull l l II l l /LIMITS OF PRDPOSED l lI hull III I l� l - _ �_ �380�� .98p� ♦ I I F ■ - ao E / l / TREE CLEARING (TVP.) V EXISTING PRESERVED I / IIIIIIII I I I I I Il Q / _ o- CONTRACTOR TO ENSURE POSITIVE g90' 6 — / i / P II �II I�1111 �� ,•�� DRAINAGE ALONG DIVERSION BERMS TP / /I ♦ �P� / rJ / Ijlllll11 II I f � _— __ I I I I I I 1 111171 II III v Q / /� 400 ��♦ \ _ AAEQ# IM� W / I I I I I I I I I I I I I I I I I I I I I• �"SB#1 D7e4ac %PPROVED DES! DD DA ,2.00 — I IIIII I� I 1111 _ Q ,L V N SUIPgyr T F I IIIII PROPOSED SAFETY FENCE / ; / / / / "T �'� _ ! X J J / �� N NE. AROUND SEDIM T TRAP / / / / �\ r Q I Q I ♦ i. l l l / / // / Q O �F I I I - I SHEE S 4 / / _ �/ _ / I // j �� 3 V� - / '►�` � � l • . � � I / / // / / / i d � o MA CH � EET S- ■ � II11 11.�11 I` I I / /WIRE I / I AV� / ` l L / j / _ // // / / — J Z SF / / / / / ✓ / / J O - i i%g s �PGRT P y / i /i ✓� / / l �i / / — — U) z a \B2� W t I �-r✓./ �/ // I I I ' / / (AM �B O - W SEESHEET8FOR OXISTING TREELINE (TVP) iJ AND OUTLETPROTECTION � _ W DESIGN IQH v a (J) q EXISTING I I / �f / 0 _ \ \ \ Q ``� �\ \ P ' I III/ bry / i l 11 llI l /ll l J/A� \ \ \ U Q ,( m TREELINE ® / I I / ■ / � � . °SJ / � '_ \ \ � \ N ' � \ \ � _ � � / y J III / / / / I / \ W � pV w Q z R 48" RCP ST NDPIPE _� / / \ / 0 O E I I I BUFFER ) / I ` / / \ \ ' TO SERV - S RISER STRUCTURE_ _` / I / / I I / D Q �' PROPOSED 48' RCP STANDPIPE I I / l I l I I I I A ® \ TO SERVE AS RISER ALONG DIVER STRUCTURE SBTEyR8U5EPCRNILMTLAUWNRAEVE I\ �'. // / \\ Y♦ \ P_ _ - \- - TOR TO ENS/URE POSITIVE APPROVED BAFFLE p�FONECEPROTMECATIONaLRAOTHEATIIE Z rLL�v- ONAPPROVED (T/) MW WEV L-QREETL MOFI T-BASINON -I n F y HI O TP I z \ .\—' \ / / / P \ \ �/ / \ �� / / ♦ I I I I I I I I I yl� / / / l \` � Z Lu (j \ \ ®\ dC \ \ PROPOSED \ FFL \ I I I I �i / /\\ \ • I I I I / / / / /) ~ O u, v) aLu III V AVA VA VAVA \ � \�V A A�' - — — — / / U` LL LL v v / III VA�VA\vim vvv v / v ♦�� _-- _ ¢0�� I 11 11�/ j � / '. i iA — �♦ _ / I / I ° / w/WIR€ :MP78��2OM1 SF ♦ �� Z _ ��/ / // / / // // / H N/F w �e Laid & o ( �� suPeoxr — —� o. e'?eoi PP 249 573 (Pli��LIMITS \VGA l�� _ — =3so—// \ \ TREE CLOEARWGP TYPD _ \ \ \ �_ _C '-= i /"/ / / / j // 4 " w '7CcIaH_ .EAR ( ) ��i� D B 1673 V 'w%]oB No rWIRE R \ �?-SUPPQRT — _ = ' %i 172131 OF DAM INUNDATION ZONE \ — — _ — _ — / / / / / / SCALE _ 3° APPROVED 30'—= _- _ —_ — —`c — _ —370-- u' _15 1u=50 RCP BARREL' APPROVED VDOT CL. I RIPRAP WITH ,➢ \ \ FILTER FABRIC UNDERLAYMENT. SEE - / SHEEP NO i — LIMITS OF DAM IN=NDATION LO_ NE (TYP.) i "( m�J / / / i — al V v _ APPROV 7 FOR DETAILS_ - / /j�f =i50 /f / / / / 4B ji t _- L Q TEMPORARY 18" DIVERSION BERM 1992 3.w SILT FENCE CULVERT INLET PROTECTION x, rr,� �.1✓ v rw.a° �..ao.+ "ON OPTIONAL STONE COMBINATION#* �y Source: Adapted from VDOT Sundad Sheets and Vs. DSWC Hate 3.08.1 Pvaed aovmlMIM evtnae f eTtsivv-I pl•m crsz cw cxA AnwAr Tw E%ia*ING DAY£MFNr 3�A A09aEGh BASE PROFILtlEvI . EIISTIK 1- 9M Fart o rcarss {`Iwna�s. -crmE mwE'asimrsis Av r �PLO �?ov-a oar SECTION A- mlvOoaMrmA A•010rr I Iry nr 1 I I I la0 I Ih titan I inch ba0ceal: shut H aR WI h iS I 1 rtl h a (1 acLex fa adapul< xomlaMH t'a I 'b tli<mmaweto an IWt ,imiu al - 4 W: Wuaa :Iv00<piesvgM L. n haeu. da Lea or x-alasoasea. PAVED WASH RACK 3.m SAFETY FENCE i■ ■r� tr ■r■ it ■■■ III Sousm! Adapted Dom Co.-! Plastic and Hure 3.In-1 VDOTa -amd • S-d-i�iaF-Ss`tl San^ante QR T 13 ROVED Sediment Basin #1 Design Ige area (acres) 12-OD volumes: (using 2' contour intervals) elevation (ft) contour area (at) volurre(cy) 374.00 3270.0 0 376.00 4626.0 291 378.00 6198.0 690 380.00 8011.0 1215 382.00 13798.0 2013 384.00 20495.0 3275 wet storage required (cy) (67aDA) dew itering orifice elevation (ft) wet storage prodded at this eleltion (cy) available Volume before "Benoist (cy) (WDA) deanout elevation (ft) distance from cleanoutto orifice (ft) (> V) dry storage: dry storage required (cy) (67'DA) principle spillway crest (ft) dry storage prodded at this elevation (cy) diameter of dewatering orifce (in) diameter of flexible tubing (in) (odfice+2") runci f: C (use 0.45 for bare earth) to (min) 12yr 4.0 02yr 125yr 6.7 Q25yr principle spillway: available head (ft) diameter riser (in) spillway capacity, Op (cfs) diameter trash rack (in) barrel lengtl(ft) head on barrel through embankment (ft) diameter of barrel (in) 1992 -RISER CREST ELEVATION POSTS MIN SIZE 4" SQUARE OR 5" ROUND. SET AT LEAST 3' INTO THE GROUND _ � z 804 design high Water 378.43 top of dam (ft) 804 top width of dam (ft) 408 bottom of basin (ft) 376.56 approx bottom dimensions: 1.9 upstream face slope: downstream face slope: 804 baffles: 381.25 length of flow, L (ft) 910 effective width, We (ft) 8.0 L I We (baffles required if < 2) 10.0 collars: depth of Water at spillway crest (ft) 0.45 slope of upstream face (Z7 ) 11 slope of barrel (Sb) 21.6 length of barrel in saturated zone (Ls) 39.8 number collars required dimension of permanent collars 1.00 emergency spillway: 48 required capacity (Q25-Q]) (cfs) 40.0 bottom width(ft) 72 slope of exist channel (ft/ft) 99.45 mnimun length of exit channel (ft) 9.75 crest of spillway (ft) 30 3.11 1992 00MPACIED 901E a' 111a1wVM TYPICAL EARTHEN STRUCTURE Source: Vs. DSWC a 1 }I Ilr I m �1 Plate 3.11-1 Somm: V. DSWC 1992 382.25 384.00 10.0 374.0 38'x130' Varies 3:1 YES 125 89.544 1.4 YES 7.25 Varies 8.80% 34.48 2 6.g'16.9' Yes 0.0 100 33% 36 382.75 APPROVED SAFETY FENCE AROUND SEDIMENT TRAP r / / / rz of / APPROVED STONE / / / / -- - - - v w v / WEIR OUTFALL T-�_ 3.18 Plate 3.19-1 3.32 TABLE 332-D SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT ARFA Tout lbs. -2-A- M'nim m f re 1 awn Cmion W or Revdmd,I 175-200lbs. - Kemneky 31 or Turr-Type TIII Fescue 95-100% Imp sd Pemnnul Ryegrsss 0.5% Kentucky Bluegrass 0.5% Hi,b Mamtenanm Lavin 200-25D lbs. . Keaucky 31 or Turf Type TO Feswe 100% General Sl- 6 1 nr Ieal - Kentucky 31 Fesae 128 lbs. Ree p Guue 2lbs. - SenuINuuCrop ' 201d. ^w Maintenanm clone !cheerier than 3.11 150 lbs. - Kentucky 31 Fescue 108 lbs. R.d Top Gras 21bN S-sal N me Crop • 20 lbs troxm-6 • • Z-8D, 150 lbs. ' Use seasonal nurse mop is amordnm with seeding dates m sued below. February 16ih through Apnl .................... Annual Rye May 1st through August 151h ............ Fomal tells, August 16th through October .. ...... ... .... .. Aneu,J Rye November through February 15th ................... Winter Rye '• Substitute Seriau lespedrza for Crux ach east of Farmville, Va. (May through Sep-M, use hulled Smices, all other peria05, use of Swims). um, is.s in Lau d Cm-teb, increase rate to 3o 11N.%acre. All legume seed must be properly inoeulatai. Weeping lnuegrass may be added ro any slope r low -maintenance mix during warmer seeding period : add III lbs./acre in A PROVED SED MINT TRAP#2 &SEDIMENT BASIN #1bETAIL \ v PROSE "CI-Trr 6 STA TO S \ - - \ , RI UCT ER \ _ N PRO SER BE EMBEDDEDA \ \\ \ - -V \ - CRE SAFETY FENCE \ILI SEDIMENTBASIN ��,TH OFG �SCOTT R. COLLINS7, U No. 35791 ,a A� �4 .r. 1 TONAL - - � z Z O o v v W in - r , \ v C k_ v LF 'O APPROVED 100WIDE RIPRAP i .3 _ \ LINED EMERGENCY SPILLWAY APPORVED - LJJ CREST ELEV.=382.75' _ \ \ I \ 30" RCP / / i \ \ BARREL / / 7 �� -. AMENDED Sediment Basin #2 Design ea. wa. area (acres) 6.04 Doings amx wATFa L ... ms.drainage basin volumes: (using Z contour intervals) ps_m. °"" aEv1 elevation (ft) contour area (III) volume(cy) oa• 352 4631.0 0..-' 354 5961.D 391 °P'' ^^^ •ems 356 7393.0 885 "ar aa,wa 358 8925.0 1488 360 10557.0 2209 wet storage: wet storage required (cy) (67aDA) 405 design high water 356.75 dewatsring critics elevation (ft) 354.05 top of dam (ft) 360.00 wet storage prodded at this elevation (cy) 405 top Wdlh of dam (ft) 10.0 available volume before cleanout (cy) (34eDA) 205 bottom of basin (ft) 352.0 cleanout elevallon(ft) 353.03 approx bottom dimensions: 32'x140' distance from clea rout to orifice (ft) (> V) 1.0 upstream face slope: 2:1 downstream face slope: 3:1 dry storage dry storage required (cy) (67aDA) 405 baffles YES principle spillway crest (ft) 355.75 length of flow, L (ft) 49 dry storage prodded at this elevation (cy) 823 effecbw width, We (ft) 147.102 diameter of dewatering orifice (in) 5.0 L / We (baffles required if <2) 0.3 diameter of flexible tubing (in) (orifice+2") 7.0 collars: YES runoff: depth of water at spillway crest (ft) 3.75 C (use 0.45 for bare earth) 0.45 slope of upstream face (Z' 1) 2:1 to (nin) 5 slope of barrel (Sb) 0.50% 12yr 5.2 Q 2yr 14.1 length of barrel in saturated zone (Ls) 22.96 125yr 7.5 Q 25yr 22.4 number collars required 2 dimension of permanent collars 3.1'4.1' principle spillway: available head (ft) 1.00 emergency spillway: Yes diameter riser (in) 48 required capacity (025-Op) (cfs) 0.0 spillway capacity, Q3 (cfs) 40.0 bottom width (ft) 50 diameter trash rack (in) 72 slope of exist channel (fGft) 33% barrel length (ft) 64 ninimun length of exit channel (ft) 6 head on barrel through embankment (ft) 6.75 crest of spillway (ft) 356.68 diameter of barrel in 24 Sediment Trap #2 Design drainage area (acres)(<3) 1.26 trap volumes: elevation (ft) area (at) volume(cf) volurri 368.00 432.0 0 0.0 370.00 660.0 1,084 40.1 372.00 921.0 2,658 98.4 374.00 1538.0 5,091 188.5 376.00 2282.0 81886 329.1 378.00 3135.0 14,281 528.9 wet storage: vat storage required (cy) (67aDA) 64.4 bottom of stone weir (ft) 372.00 met storage prodded at this elevalim (cy) 98.4 slope of wet storage sides 1:1 dry storage: dry storage required (cy) (67eDA) 84.4 crest of stone weir 377,00 dry storage prodded at this elevation (cy) 330.6 slope of dry storage sides 21 :nl�il'1 MA weir length (ft) (6,0A) 7.6 bottom of trap elevation ft 368 O bottom trap dimensions: 43'x10' top of dam elevation (ft) 378.00 top width of dam (ft) 5 top trap dimensions 75.42 AMENDED SEDIMENT BASIN #2 DETAIL SCALE 1"=30' o .E / APPROVED 10' WIDE/ TOP OF DAM j LELEV 360' / � 0) Z APPROVED 50 WIDE RIPRAP LINED EMERGENCY SPILLWAY _ / 0)Q z CR T REV. 358.66' / / 04 w O CO i o Q Q > a L) o / SAFE ES SD / W 0-6o GAFF / -j (� > J o / / ® > r IH / 1-- Q r / W t P O O DS E I Q Z D E 1 PR�IPOSED 5400'OF E I E T D / w J 0 4" (�n50 o L O a (11=350.00,HDPEI0OtR.B8) CO RACTORITO INSTALL THE RISER / Q \I \ FOUNDATION 4THE VDOTMHI'sLOWER W U Q z I 048-RISER BASE. OAK' RISER BASE TO Y i2 O c CONTRACTOR SHALL INSTALL THE PERMANENT SERVE AS THE RISER STRUCTURE. I DRY DETENTION CELL EMBANKMENT, RISER TEMP. 048" RISER RIM ELEV_ 355.75. LU U �F\\OUNDATION, BARREL, OUTLET PROTECETEMTION a I / THE D CONM�CTON STOPLSECTION F STALL ~ J L SEDIM NT BASIN�,ECONSTRUCH O)J. LOW-kLOW IRWD \ I i PERMANENT FACILITY', RISER RIM UNTIL Q 11 ORIFICE SHALL BE BLOCKED WWTERTI/ILHT V," THE TEMPORARY BASIN IS CONVERTED Ln � U ° 0�G}H1RING ISO PHACSES. CONVERSION OFrIiirnI�ASIN I TO PERMANENT BWM FACILITY. Fy cW z .xPI-1- ONLY PROVAL. SEE SHEUR ET S FORdpOOITE(JNA R DESIGN D TAILS.I iW O w 1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS. TRENCH UPSLOPE ALONG THE LINE Z W,^ '� OF P0575 V 0-6o O i LU cn of Z I t - W o 0 1111111-CD W F-' O ^ W i FLOW ,III -III= 4 - (N J. ATTACH THE FILTER FABRIC TO 4. BACKFILL AND COMPACT THE Z 0 2F E3§x. THE IMR£ FENCE AND EXTEND EXCAVATED SOIL. N fr�c yx��n, IT INTO THE TRENCH. Lck2511 srenvu,. �_ /- C) F ��Iii �- _ GGCC•• ��y n b i -IIII / / V = n ]OB NO. �/ _ / - 172131 _ FLOW �-III-III=I' �-III-III- �I=III-' �TI=111- SCALE "` =III -III- - I -III -III o SILT FENCE-"ti-xYENSION of FABRIC AND wIRE INTO'' e'AS SHOWN TH7rEENCH. _ sF fWl7/iOUTNWIRE SUPPORT? .os- WISILT FENCE SHEETNO. ° sR E sF TH WIRE SUPPORTS O5- 5 Section 5 - Stormwater Management Plan • \ y \ AMENDED POST-DEVELOPMENT.SWM PLAN: j /I" ° SCALE-60' . l \ / _ ZO(JF� .-PREjttiEP O APPROVED STORM WATER MANAGEMENT NARRATIVE: OVERVIEW THIS PROJECTIS FORTHE DEVELOPMENTOFAN APARTMENT COMPLEX, AND ITSASSOCIATED INFRASTRUCTURE. STORMWATERTREATMENTIS PROVIDEDTOAHON IMPACTS FROM THE PROPOSED IMPROVEMENTS THE STORMWATER MANAGEMENT PL4N COMPLIES WITH PART IIB SWM REQUIREMENTS.7ATERSUMMARVTHE NT}ON DELL((ES WATER (QIyA PROPOSED DEVELOPMENT REQUIRES A TOTAL PHOSPHOROUS REMOVAL RATE OF 13 1J Ibs/yr THE STORMWATER QUALITY REQUIREMENTS FOR THIS DEVELOPMENT ARE METTHROUGHTWO BEST MANAGEMENT PRACTICES. THE BEST MANAGEMENT PRACTICE OF INSTALLING A LEVELII WET PONDTREATS MORETHAN HALFOFTHE PROPOSED IMPROVEMENTS.THE LEVEL II WET POND PROVIDES A PHOSPHOROUS REMOVAL RATE 6 93 Ibs r THE REMAI R UA bs rOP WATE Q LITY BAL4NCE OF 6.241 /y F /Y/WATER O(N.35M / — lTA1Er OD1LV ! yam\/ / y O // / HOSPHOROUS WILL BE MET VIA THE BEST MANAGEMENT PRACTICE OF PURCHASING NUTRIENT CREDITS.NING QUANTLTV SUMMARYTHE PROPOSED LEVEL II WET POND (DA A) CAPTURES MORE THAN HALF OF THE PROPOSED IMPROVEMENTS & ATTENUATES ITS SUBAREA, RUNOFF A SIGNIFICANT PORTIO` OF THE REMAINING PROPOSED IMPROVEMENTS RECEIVES WATER QUANTITY TREATMENT IN SUBAREA B. SUBAREA B RECEIVESHNHAAE ATTENUATION IN A PROPOSED DRYDETENTIONCELL( DACALCULATIO FOR WATER ° O / / - � '. I A/// / / / I O ATMENT. SUBAREA C RELEASES A SMALL AMOUNT OF RUNOFF THAT IS LESS THAN OR EQUAL TO 1% OF THE DOWNSTREAM RECEIVING CHANNEL', OVERALL PLEASE SEE THE ATTACHED DOWNSTREAM 25N - SSTHANRE PACKET FOUR EVIDENCE OF HE PROPOSED PLAN COMPLIES WITH MINIMUM 9 VAC 820Q66 REQUIREMENTS. WATERSHED. 's CHANNEL AND FLOOD PROTECTION COMPLIANCE. W THISNPRO]ECT 0 ` \ �\ AMENDED •A t \ V / I 5.71 a`' \� - �- I I I / m Proposed Impervious Area Summary )AMENDED DA B, Water Quantity) Proposed Buildings 46,175 sf ° � I l/ � y\ / � Proposed Sidewalk 16,775 sf Proposed Parkin &Access 82,450 sf g Garages 3,650 sf Z 0 o a O N w rn APPROVED D� Watershed Summary 1-Year Flow, 2-Year FIOW 10-ear Flow, o � \ -- o AB ac. — — o.oz ac. / _ ° ° .. CN 7J.1 CN 84.4 ® O O o.Lo hrs � i /� Tc o.Lo nrs.J/ ® / �� CN Area cfs ifs cfs W APPROVED DAB(Pre-Dev.) 60.6 4.09 1.55 3.09 9.29 L Pce \�� 1\� � _— • — � \ � / AZON FEE I DA B (Post-Dev.) 83.2 5.71 0.30 4.79 21.48 sl \ I s o � I r 1 •I � i v� �i�' �► � '�' a \ GYP � _ �� / � I� \ STEE I \\ \� � �� \ \ \ • ��%% ��A�Vv�' -�� . A kREAT� �� \ mar �. �� • �� I �I / I l V A THE PROPOSED 'MARTHA JEFFERSON HOSPITAL PRESIDIO APARTMENTS' FINAL SITE PLAN (SDP201900075) IS IN GENERAL CONFORMANCE WITH THIS PROJECT's ORIGINAL VSMP M Z LLJ l� li I l I �� I / -- — — /vA�V� / / APPROVAL (WPO 201800027) WITH ONE EXCEPTION. SUBAREA B WAS MODIFIED AND NO PROPOSES AN UNDERGROUND DETENTION SYSTEM. TO COMPENSATE FOR THIS REMOVAL, THE APPROVED DRY DETENTION CELL HAS BEEN ENLARGED WITH THIS N 0 z w • ` „� APPROVED PRE-DEVELOPMENTSINM PLAN:LONGER caLEl•=eo �� /// / �/ �� _ � I /© /• \ zoN 3E v '�P // / _// • / / / / �t 4 - o / l/ 111 11 AMENDMENT AND CALCULATIONS HAVE BEEN PROVIDED SHOWING CONTINUED STORMWATER QUANTITY COMPLIANCE FOR SUBAREA B. PLEASE NOTE, THIS DEVELOPMENT OBTAINED STORMWATER QUALITY COMPLIANCE THROUGH BEST o W Q z / �---/��I / / — MANAGEMENT PRACTICES OUTSIDE OF SUBAREA B's LIMITS. THEREFORE, THE REMOVAL N Q �� OF THE UNDERGROUND DETENTION SYSTEM AND THE ENLARGEMENT OF THE DRY Q a z /Tl� / ° % I /I�11 I / APP I ° ° ° LOCAT�jM DETENTION CELL DOES NOT IMPACT THIS DEVELOPMENT's WATER QUALITY COMPLIANCE. > Q F / /O C::)w // //l r/ IIIII I / III II/i� �il�/� //% _�j /I/ %h /I/ /—/// J v>, �/ �'/� �1►•-_/ I \ IIII V��v f° /// �1�I II� ///1/ / I �/\ _ _�� //I � / �/��/ E� �ia��' � �/i a i LU 1 w�� LU f- /j/// lI / i��,�/°//��l� � j�// /// j/ // `r zo �i�/'" \�l / �� i/ / I I Il _j LU Q z 10Q• OF\06F �d— 6 cTc 010 his. )I \\ °° o o ° ° C) LU A A V ��/V (/\ \\\\�\\\\\\\\\ U�) Ul � I\mo■ � �� \ h�rs h \\\� �\ _� \\ �\\\ (T \A\\\ \\\ \ 1D//,0/S O(SFF CFnw��A/Q/—B 1/R �\\ A\\\\\ \\ � -\ \\ A\�\B\�AM `\\ /I/ /�I=I�/ \\ \BBEA wU) Z OF__z OOLT I— \V \q_\\\. \\ \\\\�\� /, —�/ /�00.9/4 �=�� \ �\\,\F\ 4�\ V\\\l c\A \ � \ \V \\v\ ( �� L�, �A�2E\D� U) o i2 n _ - P llll�ll�ll\� = �a \ m \ \ DAA ,APPROVED \\\ W �/ //� .;e.�+ \� / LLI LIL C) O Lu .04 P _ • PnR�xvP3wllrs \ \9 1 - _ _- \Vl�\C T, .' s _ _ = "`— IC nn f w rMn mnoPlmn \\�/ t t 1, 1. All dams and constructed fill to be wth'n mm 95% of Ely densty and 2% of oprmum mostore content. All fill m b,ri l I. MASNNAGE STEEP be approved by a cl otechn"cal engneer A geotechn"col engneer s I ..... eser a JOB NO. 172131 SCALE AS SHOWN / 2Ppee and ornts a�e,too Eeo 1ertightswtho st.rm ter J �� 3. For temporary sediment traps or basins which ... to be c verted �� mo, b—p of +ccanies. n e n� s /\� \ \ ` to permanent atormwater management facllitles; c nv rs not I (L lhas SHEET NO. / /// ///��\ \\ _�\\\ \\ '� / / / 7� \ l to take place until the site is stabilized, and permission been 1 obtained from the County erosion control inspector. 6 5TORMWATER MANAGEMENT FACILITY GRADING Elevation Area of Forebay Volume Elevation Area of Wetland Volume Elevation Area of Main Cell Volume Elevation Total Facility Area Volume (ft) Cell Contoum(sf) (cf) (ft) Cell Contours(sf) (cf) (ft) Contours(sf) (cf) (ft) Contours(sf) (cf) 376 505 0 376 - - 376 177 0 376 682 0 378 1,534 1,946 378 - - 378 1,089 1,137 378 2,623 3,095 379 2,187 3,797 379 328 0 379 2,197 2,748 379 4,712 6,712 380 2,933 6,348 380 878 581 380 4,500 6,028 380 8,311 13,139 382 - - 382 - - 382 - - 382 14,412 35,584 394 - - 394 - - 384 - - 384 20.500 70.317 PROPOSED.'WIDE FOREBAY CONSTRUCTED OF GABION BASKETS FILLED WITH VDOT CL. PROPOSED.'WIDEFOREBAVCONSTRUCTED STONE. Aa STONE. TOP OFINCLUDE AV DAIDEEIL E OF GABION TOP OF BASKETS FILLED WITH VDOT LEV.15 3 WEFORIRAY ToTOCONVEY FLOWS To THE EWE,i DEEP 8.. STOFORNE.TOP INCLUDE AYDAM ELEV.E CEIR TFORERA WEIR CRES TLE .E379 D // 38EIRTO COVEE IFLOWS OT WIDE, . DEEP CELL. FOREBAV WEIR CRESTELEV=37g.o'. WEIRTOCONV EIRCRESTOTHE 319... LL. 3Qn FOREBAV WEIR CREST ELEV. ;)90AIN '. 7Qn ,PROF OSED M\ ISE=3M" /(PERMANENT ( PCDLDEPTI I=' 4) PROPOSED 10' E C RI (ESC I R F UN IM ELEV ATI RE LOWER PORTIO FITS =381.25.) TO REMAIN. CO TRACT 4 L. 111 RCP STANDPI R SHALL MODIFY THE TOP E 385 WIDE DAM EL OP OF = PORTIO d OF THE ESC RISER TO HAVE A VD T MH-1 CK OVER UPPER C NE. CONTRACTOR ST 38 rJ INS ALLING HE MITI FRAME & COVE . SWM F CILITY NEW RISER RiM WETLA D ELEV. 381.J5'. CONTRACTOR SHALL 11- , WATERTIGHT, THE ESC ORIFICE CELL INSTA ONE NE 06" L W-FLOW ORIFIC (INV.=3 - 0.00) ITH A TRASHRAC . RO SE 10' XISTING WIDETOP OF 380 GRADE P DAM E EV.=38 . 380 MEN PROPOS Dio'WI E,i + FOREB 1Y DEEPA UATICB NCH EL D VMTHE TO SER E AS A DEWATER NG ORI�E'VA ETOBE SHUTO ADLTO FPOSITION DURING NORATIONS BE LOCATED AT THEIM ELEV VALVE TIOIOR 375 ] Sr BELOW IT. VALVE / O NING T BE RO OSED LOCAT D AT THE BOTTOM OF THE POND, NVERT E V = PRO OSED ' EEP OR kDE 316.Oo V/k EI-EFICE-ENEIG-INIGE-111THE INTEN BOTTOM OF THE FACILITY FOR EASIER (FLO OREBAY R ELEV. 376') IN . OUT= RAINED S OLD THE FACILITY NEED TO BE 370 72.50' CONTRALTO SIT LL INS ALL A C OMPAC TOFF T ED CL INCH. Y CORE MBANK w/ A ENT TO \ BE IN CCORD NCE w THE D SIGNS OWN 01 THESE PLANS. STR:FUTURE MH 365 30" OIL. III RCP MODIFIED VDOT MH-. 101.05 LF ® 8.41% TP=369 62 \ INV IN 364.00 TO 10 INV OUT: 360%0 TO WET PO D RISE FOUND MON N TE: TO RED & BARR CE THE L CONN SK OF CTTON LOATA ALL BE 360 ON, RES RMLY R BASE - EMBED CONCR ED 6" IN E FOUN 0 AN 1 ATION "THICK HAT IS EINFO 'X8' & B ED RIED \ OUTBID THE Ur TTS OF HE POOLED WATER. \ 355 555 350 350 P \ l MCA Sy 345 345 340 340 RIPRAP HANNEL I ESIGN RE UIREME lTS: RjrRA UP THE SID 2. CONTRACTORS ALL INSTALL A C SS II FIL ER FABR C UNDERLAYMENT MEETING MINIMUM REQUIREMENTS & SPECIFICATK SET FOR N 3.19. FILTER FA H IN TAB IC SHAL 3.19-D BE KEYS OF THE VESCH STANDARD INTO THE EXISTING GROUND A MIN MUM OF T AT ITS NDS & A ONG THE ENTIRE PERIMETER. 3. PLACEMENT OF BOER FABRIC SHA L BE DONE IMMED ATELY AFTER SLOPE 335 PREPARATION. N DGES OF THE FILT RSH . SHALL 0 ZERILAP AT LEASTI ". 335 FELTE I RIPRAP SHALL BE PLACED PROIDUC ES A DENSE WELL- RADED O THAT I MASS OF STONE WITH MINIMAL VOIDS. THE 1111SHED SLOPE SHALL BE F EE OF POCKI TS OF SP ALL STONE OR OLD 3TERS OF LARGE S1 ONES, n.o9 if. o,a 33() v,� lass r a ,ET 330 D,o 0,11 F1 RIPRA 325 PRO 4.25' OSED VDOT HICKNE STD. 5 WIT CL. III CLASSI IPRAP LTE FIR 325 FABRI UNDE LAYMEN THAT IS KEYED INTO E EXISTING GR UND A INIMUM OF I ALONG ITS EN RE PERT ETER 320 320 315 315 312 312 oo Pn ro 0 �J W� MM MM MM MM M� M M M U+JU 1+UU 1+DU L+UV Z+JU S+VV 3+DO 4+VU 4+nU D+UU D+Lb PROF! LE SCALES: WET POND SECTION LEVEL II WET POND DETAIL: SCALE 1=30' / IN 10' WIDE, 1' DEEP �WEI GABIEY BASKETS `� LOVERHEAD // CONVEY FLO T / �/ ELECTRIC LINES CREST 9 WETLAND CE EIR � /�j//, .=3 � / / P SERVED STEE \ P ./LO ES/T1'P. ,1 \/� 00 �.R�6 // / / i/' /� / \/ /LIMII�TYP� 1 �n POPOSED 10' WE TOPDa�OAM / V, ��j / // /('.� ELEV =384. LEVELT OF DAM J SERVE A$ ACCESS FOR S M MAIN�TyEy E. / 2' WIDE INTERIOR DAM C STRUCTED / OF GABION BASKETS WI STONE TO / P CONVEY FLOWS TO MAIN ELL VIA OVERTOPPING. TOP OF DAM LEV. 380', BOTTOM OF GABION BASK S TO BE = ) /� ANCHORED AT ELEV. 3 5.00 r L ,.. , 4 _ \ TO REDUCE THE RISK OF OATATION, / RISER BASE & BARREL CONN CTION SH L 1N_P eE FIRMLY EMBEDDED 6" I TO AN I8" 07800 THICK REINFORCED CONCRETE FOUNDATION o _ s NPIA[E---- $TEAR€A C P[PE / THAT IS S OF 8,8'& BURIED OUTSIDE THE \NOBRE T COMPAN --- UTEALL RT OF \ LIMITS OF THE POOLED WATER. o REV€LOP29,63 0.IPANYI�FUTUREFINAL ITE\p1AN _ \ 29.63 - ` \ \ / PROPOSED ESC 030" CL. III 3� __ CONTRACTOR X / P BARRELibREM dN. + PROPOSED VDOT STD CL. III -- SHALL INSTALL A RIPRAP(4.25'THICKNE55)-WiTtT VDOT STD. EW-1� �� / / ' 3 O CLASS IE ---- OERIMFABRIC ABRIC N NT THAT IS KEYED YEAD INTO THE EXISTING MINIMUM OF 9ALORGITS L,'T—__TCATLqTLpFIIEDINIHI- 6 POPOSEDESC )TEAL CQN R 5k� I I I I �Uq I � I I \ BARREL TO EXTEND THA4 UTFALL BEYOND THE I Ili II II EXISTING (\ l I I I I I I / I I IMPROVEMENTS/ EASENN NS T'BE PROPOSED/ II I I HEADWALL I\ I \ I I RECORDED WITH THE FINAL SITE 'IN' NITRIIION 11 HETHIS El I \; 5+22 I I �A4RCE P M 5, I I I I I I I I I BASIN'S BARREL TERM NATES ONStOTE AT THE II \\ JWQ I I I \ \ :SC_CEGAII ER ON OFOUNDATION & LOWER F THE FUTURE ST APORTION OF ITS ' I I PEA 9VAC25-870-66ITHE LEVeL II WET PONDI \ \ \ \ \ 048" CL. III RCP STANDPIPE (ESC RIM ELEV.=381.25') OUTFALL ANALYSIS ENDS AT THE FACILITY DUE TO TO REMAIN. CONTRACTOR SHALL MODIFY THE TOPS \ �\ COMPLIANCEWITH THE ENEBALANCE \\\ PORTION OF THE ESC RISER TO HAVE A VDOT MH-1 � CALCE'11ATIO& HAVING A POST -DEVELOPMENT \ \ \ \ \ \ UPPER CONE. CONTRACTOR SHALL INSTALL A 10-YEAR FLOW LESS THAN THE CORRESPONDING \ TEAD 0 IN OVER THE HE MH FRAME OPENING \ �- INSTEAD OF INSTALLING THE MH-1 FRAME &COVER. \� i 10 YEAR PRE DEVELOPMENT FLOW. \ SWM FACILITY NEW RISER RIM ELEV.=, THE '. SUGAR A C's TO 1%L CHANNEL IS LESS THAN \ CONTRACTOR SHALL PLUG, WATERTIGHT, THE ESC 1 OR QUALTOILL OFTHEDOWN STREAM ORIFICE INV.=3LLONE NEW 0 TFUkSH CK. ORIFICE CHAN EL's OVERALL WATERSHED. SUBAREA C. \ \ (INV.=380.00) WITH A TRASHRACK. IE CO NM PLIANT WITH MINIMUM 9VAC25-BJO-fifi ` „4 PUBLIC R/WJ I REQUIREMENTS. S EE CALCULATIONS PACKET, I / FOR ADDITION AL INFORMATION. GABIONDB�P116/EK�1Ts T CON I M FLOWS TO MIr.IN CELL,W / E/ CREST ELEV 37s PRESERVYE0o WIDE �OT CL A SLOPES, C 1{{((��RIP EST ENEVDAI'IppENGE3Ft2YJ5'� / ILLWAY TO HAVE 4:1 S10E SLOPES' 1iY,, I �JI CONTRACTOR SHILL USEED / 4ATIlICBENCH&50HAtLENSUe EALTHYGROWTH OF PLANTINGS MANAGED 5')EEP DURING THEHRST1171WY .) \ Ic}iu.-III T \ w PROPOSED VA'ey�/WIDTH _ I DRAINAGE&SWM ES ESAT. / FEDERAL AM\ / INUNDATION ION / SE CTIKIEN A-9: TYIHCAL GRAPHICAL DETAILS - _fMBogeneaua fill i I `�I'Lplt aR trenM-matMaiial slitehle :vil ar rocF L______.._---_J TYPICAL HOMOGENEOUS EMBANKMENT Tr°rcili. fill ar grprel Pipe oIIIIA Pedpreled ovileclor Fwndation drain 9knFet dmiM1 FOUNDATION DRAIN BLANKET GRAIN &1SA Smtl, rcrrrY Root a gmz[ PArx ue a drtirl Tlvnagun Biter Trenalion filter CHIMNEY DRAIN TOE DRAIN Figure A -I&. HomagePPI Embankruerus w/Seepnge ConYrafs GENERAL SWM NOTES: .. STATE APPROVED TRASH RACKS AND ORIFICES SHALL BE INSTALLED ON ALL ORIFICE OPENINGS. SEE DETAILS ON THIS SHEET, OR EQUIVALENT. .. CONCRETE FOUNDATIONS SHALL BE INSTALLED ON ALL RISER STRUCTURES MEETING MINIMUM VESCH 3..4 SPECIFICATIONS. 3. CONTRACTOR SHALL HIRE A THIRD PARTY GEOTECHNICAL ENGINEER TO ENSURE THEEMBANKMENTSARE STRUCTURALLY SOUND. THE EMBANKMENTS SHALL HAVEA COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON THIS PLAN. 4. THE DOWNSTREAM EM SANKMENT SIDE SLOPES OF ALL PERMANENT FACILITIES SHALL HAVE A MAXIMUM 3:. SLOPE. WET POND DESIGN & REQUIREMENTS: Treatment Volume, Tv (VRRM) 14,716 Minimum Treatment Volume Required for Level II Basin 22,074 Treatment Volume Provided at MWSE 13,139 Minimum Percentage of Tv Provided at MWSE 50' Percentage of TV Provided at MWSE 60' Ponding Depth Corresponding to Minimum Tv Required 0.8' Maximum Ponding Depth allowed for Minimum Tv 4' Maximum Percentage of TV Provided above MWSE 50' Percentage of TV PmVided above MWSE 40' Forebay Volume Required (0.25'/Imp. Ac.) 3,451 Forebay Volume Provided 6,348 Minimum Wetland Shelf Area(10% of Pond Area) 831 Upper Wetland Shelf Area Provided 878 PROPOSED 100 WIDE VDOT CL. AI, EC-1 RIPRAP LINED EMERGENCY SPILLWAY CREST ELEVATION= 382.75'. 385 SPILLWAY TO HAVE 4:1 SIDE SLOPES 385 375 1 1 1 1 1 1 375 o O O N N N O LOW 4 pD DJ m W a W 0+50 1+00 1+25 WET POND SPILLWAY PROFILE SCALES: (V) 2'=5o'(H) AQUATIC BENCH (ZONE 1) PLANTING SCHEDULE FOR SW M FACILITY SYM BOTANICAL COMMON NAME SZE SWM FACILITY QUANTITY COVEPAGE(SI ZONE PLANTINGS PC PONTEDERIA PECTINATUS POND WEED - - Boo VA VALISNERIA AMERICANA WILD CELERY I-1 925 EC ELODEACANADENSIS IWATERWEED I- - 1,300 LEVEL II WET POND LANDSCAPING DETAIL: scale 1 ° 3a Ty P/� 1 S 475 OF EC _ ONE -rw �+0 / I I f I OF V I ax5 sf OFP I0 — � WIDE, e W TAN I � 4F5VA0�OFVf O I SUB]ECT I PROPERTY, TYP\ I I I \\ O Q I \ 1 FEDERAL DAM INONDATI'ON ZONE, } I 1 T 1 \ I \ I 10' W144I YBE II ICI I I I OFEf nQUAT(I\F BENCH L Ijl �k6 PgTP. vy A D E 'f1 CEP / I RETAINING WALL NOTE:L D I Ati I N NO CANOPY OR UNDERSTORY TREES SHALL BE PLOWED WITHIN TEN (10) FEET OF THE /I BACK OWETOP OF THERETAINING WALLS. / /I TH OFD f� N ,SCOTT R. COLLINS- U No. 35791 Y A� 44 �sSZONAL E Z O c O Q �W/ it Z z w M ry z � w v � W CD CD z Cn Q WQ > a - Z LL J V J — > UZ > H L9 � ~ o Z C Z w za O Q C LL W Q w� W Q > H _J J 'n Q LLJ > Ul ~~ w Z W U0_ W 0 F U z J F o W (n Ell(if LU � LU Q LL O Ur LL o w � T U GQ E i JOB No.� 172131 SCALE AS SHOWN o SHEET NO. 7 APPLICABLE NOTES & DETAILS TAKEN FROM APPROVED SHEET 7 (NO MODIFICATIONS ARE PROPOSED) SECTION A-9: TYPICAL GRAPITICAL DETAILS - _Hw0gell m fill 4c RXR `I'�QIt atf Iraneh-mat�mnol sTiMhle l Shc wrah L___--_-J TYPICAL HOMOGENEOUS EMBANKMENT Tl iI NII ar g mael Pip• wi61 D'�mur�rt Peril lee WleclDr wnadion dTuin �drdR FOUNDATION DRAIN BLANKET GRAIN din Sara a reTk aIER, bAk1 Rri Ne eRock a 9-1 T•N•IGOM1 1lllar Tienalim filler CHIMNEY DRAIN ICE DRAIN Source: SCSETegiNORringFee[dAlmruoi 119111 a-1&. 1101110gP1rPDffS CI&&0.NkTI1CRIT Wl Seepage C0110016 GENERAL SWM NOTES: a. STATE APPROVED TRASH RACKS AND ORIFICES SHALL BE INSTALLED ON ALL ORIFICE OPENINGS. SEE DETAILS ON THIS SHEET, OR EQUIVALENT. a. CONCRETE FOUNDATIONS SHALL BE INSTALLED ON ALL RISER STRUCTURES MEETING MINIMUM VESCH 3.L4 SPECIFICATIONS. 3 . CONTRACTOR SHALL HIRE A THIRD PARTY GEOTECHNICAL ENTS ARE STRUCTURALLY TRUCENGINEER ALLYENSURE UND.T EEMBA EMBANKMENTS COMPACTED WITH A CUTOFF TRENCH LLHAVE A COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON THIS PLAN. 4 THE DOWNSTREAM EMBANKMENT SIDE SLOPES OF ALL PERMANENT FACILITIES SHALL HAVE A MAXIMUM 3:a SLOPE. APPLICABLE DETAIL TAKEN FROM APPROVED SHEET 6 SCALEI"=30' PROPOSED FLAT (0%) 15' LONG, 4.25' DEEI FDE�H-4.7ZT��%T. T TYPE I RIPRAP LINED OUFLET PROTECTION / T / O• / / BUTTINGWIDTH AT LTHE TRAPEZOIDAL ICHANNELDTH AT P10f O F OF VDOT STD. TYPE I RIPRAP LINED -_ L CHANNEL TO BE INSTALLED IN CUT. / L TO CONVEY RUNOFF FROM THE DRY ON CELL TO THE FLoODPLAIN. STONE �•/ / / � A FILTER FABRIC UNDERLAYMENT. RIPRAP / 2 ros THE DRY DETENTION CELL IS IN COMPLIANCE WITH - - - MINIMUM 9VAC25-870-66-PEGULATIONS. CHANNEL PROTECTION IS VIA SUBSECTION B.3(ENERGY t1ALANCE CA2ULATIONS). FLOOD PROTECTION IS MET VIA ESECTION C.2.a (CONFINES THE POST-DEV. 10-y, FLOW THIN THE DET ALY N CELL & RIPRAP EfE4kfXIN�EL) WITH A 48.0' LIMl1T5 ONALYSIS SET VIA SUBSECRONi.3:c_ DISCHARGES TO A MAPPED FLOODPLAIN . APPROVED 012' 24' DPE DRY DETENTION _ (z/ / CELL BARR VDOT STD. EW-1 / 4 N- /IT+IV_I.1NV� 49X OUT=3.68')8')D0' TO REDUCE THE RISK OF FLOATATION, ' / RISER BASE & BARRy[ONNECTION SHALLEEMB�\ E3 FERMLY EMBEDDED 6" INTO AN 19 CK REINFORCED CONCRETE FOUNDATION >� - 29 0 • _ za 100-YEAR -� FLOODPLAIN 1 \ \ \ \ \ \ S \ 2. \ \ \ RI CONTRACTOR SHALLI VDRAMH-1WITH ARIM ELEVATION OF 367-33K35].50'. TRASHRACK SHALL BE INSTALLED OVER THE PER 024" OPENING \ IW\s-o OFAM ANTE&COVER. RISER TO INCLUDE A 0OW-FLOW ORIFICE WITH AN INV RT-352.00. APPROVED 50 WIDE VDOT CIE. Al, EC-1 THAT ISIS XB &BURIED OUTSIDE THE / RIPRAP LINED EMERGENCY SPILLWAY / _LIMITS"6FTHEEXCAVATItIR.- CREST ELEVATION= 358.fi6'. SPILLWAY / TO HAVE 41 SIDE SLOPES V R. T � \ WID IL / \ APPROVED 10' WIDE TOP OF DRAINAGE&SWM f DAM ELEV.-360'. LEVEL TOP / ESMT.COINCIDES \ / WITH PROPERTYLINE_ T, OF DAM TO SERVE AS ACCESS \ / FOR S W M MAINTENANCE. REC DE UBL I / / APPROVED RIPRAP_ 'NED ENERGY \ L DISSIPATER. \ CON RACTOk SHATERAREMOVE / STHE SE DIE ENN BASIN T&0 HAL \ \ \N\ \ PROPOSED ONTOURS SHOWN-0 //H'FACIALIF!'s \ $$?? CON ER5IONTHE // \ / AT THE TIME OF TEMPORARY SEDIMENT BASIN / #2', CONVERSION TO A PERMANENT SWIM FACILITY, THE CONTRACTOR SHALL UNPLUG THE LOW -FLOW ORIFICE, INSTALL THE +'8 / LOW -FLOW ORIFICE', TRASHRACK, REMOVE THE TEMP. ESC TRASHRACK INSTALL THE UPPER SECTION ), THE ALL T FINAL RISER SECTION RIM ELEV.=TRASO), INSTALL THE PERMANENT i J d O * / WA RISER TRASH RACK&PERMANENTLYPLUG WATERTIGHT THE ESC DEWATERING ORIFICE hBE \ \ StorrnRax ^ CONTRACTOR SHALL INSTALL THE ETORMRAX ROUND SERIES ROUND SERIES TRASH RACK (OR EQUIVALENT) TRA6111K WTT„AN ANTI -VORTEX DEVIC.THEE, OREIUWAUNTEDENI LI CONCRETE MANHOLE * ON THE RO0.5HAR INSTHE TALL THE6TO0.MRA%ROUND SERIES STANDARD e0 INCH PACK SHOWN TRASHRACK WITH AN ANn-VORTEX DEVICE, OR EQUIVALENT, ON THE TEMPORARY SEDIMENT BASIN', RISER DIMENSICIN5 IN INCHES I ■w . eau iris ��1 ►��R PLAN SIDE VIEW StarmRax- Round Series for Concrete Manhole Part 1110. MA U.11 l MN ID MI1100 ASx4 17y , 14% 22 1 m 31 RShfi 2l 14 OA 36 O Ada 27 ig 54 . 1 48 1 57 15-60 1 27% 1 I&Y. 1 66% 1 60 1 70 Pl stt1c Solutions, Inc. CU4IOIER 48es, liar. vnlieaa N 1va*,6�va.vnxTrr+a, vw vsa3 Z50722-2219 fi. PROECf fSRx 772-1219 Fv IWpi/hvxw.INa�MI tlamn OONCRETP STRUCTURE DIMEN840N8 I ASIDE STRUCTURE DIMENSION OUTSIDE STRUCTURE DIMENSION AVAILABLE OPTIONS CRO99 RRACINC FOROVERHMh7 HDPE ANTI VORTEX PLATE IREDT:' DATE DRAMA BY. NPDEY DERAIL APPLICABLE DETAIL TAKEN FROM APPROVED SHEET 9 000 ®® ®®c( ®®® e LY isometT'iP s/* „o v Lc (ovc � �J 00 �110�, I "..R`e1 18 00 °000000 DPEBa vle �qc ACC LtOR soluuana Ina- ar evuwl t/e Q �Q „_„ F E]evation �IILASTIC p4. Box 4B89 T)FHRTS CAGE .LUTIONs INC - FACILITIESCCE59 6q \ \ EA$EMENY`F�OR SWM D P 52 G 400-409 _ \ � ROO EXPANSION TO THE PUBLIC TTH R&ACCESS SE EASEME T FOR SWM \36 \ WRA Al APPROVED DRY DETENTION CELL CONSTRUCTION NOTES: 1. THE DETENTION BASIN SHALL HAVE TURF GROUND COVER, SUCH AS GRASS, MULCH OR SOME OTHER FORM OF A VEGETATIVE GROUNDCOVER. LANDSCAPING BEYOND TH1515 OPTIONAL AND IS NOT REQUIRED. 2. THE PROPOSED SIDE SLOPES OF THE BASIN SHALL BEA MAXIMUM OF 4:ITO REDUCE THE RISK OF EROSION. THE PROPOSED FLOOR SLOPES SHALL BE GRADED TO PROVIDE POSITIVE DRAINAGE AT ALLUMES TO THE RISER STRUCTURE. 3. WOODYVEGETATION SHALL NOT BE PLANTED OR ALLOWED TO GROW WITHIN 15 FEET OF THE TOE OF THE EMBANKMENT NOR WITHIN 25 FEET OF THE PRINCIPAL SPILLWAY STRUCTURE. 4. A VEGETATED BUFFER SHALL BE PROVIDED THAT EXTENDS AT LEAST 20 FEET OUTWARD FROM THE BASIN TOP OF DAM ELEVATION. PERMANENT STRUCTURES (E.G., BUILDINGS SHEDS etc. SHOULD NOT BE CONSTRUCTED WITHIN THE BUFFER AREA. REAA E TREES SHALL BE PRESERVED I NTHEBU FFERAREADURINGCONSTRUCTIONIFATALLPOSSIBLE. 5. EFFECTIVELY THEENTS ROATER PENETR PENETRATION D, THEREFORE, MAY LEADCOMPACTED PREMAURINGTURE THETALITY R HOINLOSS PROCESS TO SA SURE STABILITY THE DTING OFTHESESHOULD BE TIMES OIUS DEEPER ESO RAND WIDER TIT EFFECTIVELY PREVENTS ROOT PENETRATION AND, THEREFORE, K, A D FIVE E T PREMATURE MORTALITY OR LOSS OF VIGOR. D A RULE OF THUMB, PLANTING HOLES SHOULD BE THREE TIMES DEEPER AND W IDER THAN AVOID THEDIAMETER OF THE QUIRE FULL SHADE, DE,DNAREBURLAP ONSTOCK,AD DFIVETIM ES DEEPER AND WIDER FOR CONTAINER -GROWN STOCK, 5. SUPPRESSING THAT REQUIRE FULLSHDE, OR ARE PRONETO WIND DAMAGE EXTRA MULCHING AROUND THE BASE OF TREES AND SHRUBS IS STRONGLY RECOMMENDED ASA MEANS OF CONSERVING MOISTURE AND SUPPRESSING WEEDS. CONTRACTOR REQUIREMENTS: 1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PUKE. 2. LANDSCAPE CONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL INFORMATION. THE CONTRACTOR SHALL ABIDE BY ITS CONTENTS; HOWEVER ANY NOTE5 OR SPECIFICATIONS ON THE PLANS SHALL SUPERSEDE THOSE OUTLINED IN THE SPECIFICATIONS MANUAL (COPIES ARE AVAILABLE FOR A FEE FROM THE VIRGINIA CHAPTER OF THE AMERICAN SOCIETY OF LANDSCAPE ARCHITECTS VIRGINIA NURSERYMEN'S ASSOCIATION INC. AND THE VIRGINIA SOCIETY OF LANDSCAPE DESIGNERS. 3. ALL FUNTNURSERYMEN, 50 STREET, ET, NW, THE MINIMUM 500,WA WASHING ON,DO ANDSTANDARDS DESCRIBED IN THE CURRENT ISSUE OF THE AMERICAN STANDARD FOR NURSERY STOCK PUBLISHED BY THE AMERICAN ASSOCIATION OFNURSERYMEN, 1250STREET, NW, SUITE SOONS IN TH FIELD DC NOTIFY 4. THE CONTRACTOR SHALL ACTOR I ALL ESPON IBLE FOINTHEFINGTHE LOCATION ANYO SITE ANY VARIANCE MOMTHE Y1-IR 5. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY 1-800-552-]001 BEFORE ANY EXCAVATION). 7. ALLREFR To WORK SHALL LL BECOORDINATED ORDIN TEE PITH S FOROTHER PARTIENY S. AILED SITE INFORMATION. 1. ALL WORK SHALLBEPARED FOR SHIPMENT OTHER PARTIES. 8. PLWTSWILIE TED IN THE CONTAINERS IN WHICH THEYMANNER AVETHAT GROWN. NOT CAUSE DAMAGE TO THE BARK, BUDS, BRANCHES, STEMS, Oft OVERALL SHAPE OFTHE STOCK. CONTAINER GROWN PLANTSWILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE LL B W N. 9. ALLPLANT MATERIAL, UNLESS OTHERWISE MSOSPECIFIED, NFSTALLBEUNIFORMLY LLPLANTMATEIAL ANDSHALL HAVESH, FREE US FROM OT TRANSPLANT LANT SHOCK DR VISIBLE SHALL BE HEALTHY, MEDUHEAND LTHYFREE WILL BE RNFECTS, DECAY, DISEASES CONTAINER STOCK PEST EGGS AND AVE LL BEEN OF ATED IN A O AMNIA LONG ENOUGH SHALL BE THER ROOT FREE M TRANSPLANT PEED S OR VIENTL WILT. HOLD ITS DEEOIL. CO TAINER STOCK W ILL BE POORLY DEVELOPED 10. RALL OOT SYSTEMS SILL NOT BE ACCEPTED. BEEN PROPAGATED INACONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD ITS SOIL CONTAINERSTOCK WITH POORLYDEVELOPED ROOT SYSTEMS WILL NOT BE ACCEPTED. 11. PANTS NOT INSTALLED ONBE FROMAARRIVAL ON 51TE RYING ATLBE LTSTOREDAND VERING THEDBVTHE COATS NET. OUTMOISIDE T SAWDUST, ETBURREAS ILLBESHADEDANDPREDDEDDB FROM PEATMOS, AND SUN. PANTS STORED ON SITE SHALLBE PROTECTED FROM ANY DRYING AT ALL TIMES BY COVERING THE BALLS OR ROOTS WITH MOIST SAWDUST, WET BURLAP, WOOD CHIPS, SHREDDED BARK, PEAT MOSS, OR OTHER SIMILAR MULCHING MATERIAL. 13. MINOR FIELD RESERVES ENTSRIGHT TOMAYBE SUBSTITUTE PLANT MATERIAL ITIO SIZE ANDTBLDUT ITY CONFLICT). MAJOR RMUST BE ADJUSTMENTSAPPROVED BYMUST THE APPROVED THE DESIGNER. AND THEN THE DESIGNER. THE THE / QUANTITY. 13. NO PUNTING ADJUSTMENTS WHEN IS FROZEN. IS SITE CONDITIONS(E%: ROOTBALLANDUTILIN CONFLICT(. MAJORADJUSTMENTSMUSTBEAPPROVED BY THEDESIGNER. 14. PLANT MATERIAL OCCUR WHED THE IS I IS FROZEN. 15. THE CONTRACTOR SHALBEPIATAIN N ONE TING CALWITENDAR EACH 90%CARE ING PITREAND EXCAVATED TOREPLACEMENT A RMNEFFICIENT FORATOCONTAINTHEE TIRE PERIOD OF CARE N ROOT REPLACEMENT SHOUT CRAMPING ROOTSTOCK. 16. THE CONTRACTOR COMPLETE INSTAL ONE 1 CALEND NTSARDCON CONTINUE FOR DN CALENDAR WARRANTY FOR ALL PLANTINGS. THE PERIOD OF CARE AND REPWCEMENT SHALL BEGIN AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE FOR ONE CALENDAR YEAR. 18. THE CONTRACTOR IS WILL NO BE PO REMOVAL AND TMATDISPOSAL OF THAT HAS B DEBRIS WITHIN THE LIMITS OF THE, DAILY B515. 18. THE CONTRACTOR WILL NOT SE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM FIRE OR OTHER ACTIVITIES BEYOND THE CONTMCOR's CONTROL. FACILITY CONSTRUCTION 1. THE DETENTION BASIN MAY SERVE AS A SEDIMENT BASIN AND/OR TRAP DURING PROJECT CONSTRUCTION. IF THIS IS DONE THE VOLUME SHALL BE BASED ON THE MORE STRINGENT SIZING RULE (EROSION AND SEDIMENT CONTROL REQUIREMENTS V5. STORM WATER TREATMENT REQUIREMENTS . INSTALLATION OF THE PERMANENT RISER SHALLBE INITIATED DURING THE CONSTRUCTION PHASE AND DESIGN ELEVATIONS SHALLBE SET WITH FINAL N THE BUT OF THE SEDIMENT BASIN AND CONVERSION TO THE FOR THIS POST -CONSTRUCTION P POND IN MIND. APPROPRIATE PROCEDURES SHALLBE IMPLEMENTED TO PREVENT DISC HARGEOF LE TURBULENT WATERS WHEN THE BASIN IS BEING CONVERTED INTO AN DETENTION BASIN. FOR THIS DESIGN IN PARTICULAR THE RISER RISER FOUNDATION BARREL AND LOW FLOW ORIFICE SHALL BE INSTALLED AT THE TIME ET THE SEDIMENT IMP', CONSTRUCTIONNSTR AND SHALL REMAIN WATERTIGHT UNTIL THE TRAP IS CONVERTED TO A PERMANENT FACILITY. 2. THE DETENTIONBASINUCTION ONLY BE THEN THE FACILITY AFER WLL BE CONTRIBUTING RED,D DRAINEDGED GE AND AREA GRADEDO THE TO D IS DESIGN DIMETELY NSIONS AFTER T E ORIGINHE AL SITE CONSTRUOND SITECTION WILL BE OMPLETSASEDIMENTTRAP OR BASIN DURINGTHECONSTRUCTIONPHASE,THEN THE FACILITYWILL BE DNCLUDI G DREDGED AND WATERING TODESIGNDIMENSIONSAFTERTHEORIGINALSITE CONSTRUCTION IS COMPLETE. 3. INSTALL E&SCONTR RING CONSTRUCTION ION SHALL BONOFTED BASIN INCLUDINGTEMPORARY DE -WATERING ER APPROVED AND METHODS OF DIVERSION ABIUz AION. ALL AREAS SURROUNDING THE BASIN THAT ARE GRADED OR DENUDED DURING CONSTRUCTION SHALL BE PLANTED WITH TURF GRASS, NATIVE PLANTINGS, SC OTHER APPROVED METHODS OF SOIL STABILIZATION. 4. CONTRACTOR SHALL EXCAVATE LL THE ER, OUTFLOW STRUCTURE SPILLWAY PIPE THE THE ESC PHASE. 5. CONTRACTOR SHALL ALSO INSTALL THE RISER, OUTFLOW STRUCTURE AND/ORTHE BAMEL(s)DURING THE ESC PHASE TO ENSURE THE TOP INVERT OF THE OVERFLOW WEIR IS CONSTRUCTED LEVEL AT THE DESIGN ELEVATION. 6. UPON CMPLETIRSH FT HE EMBANKMENT AND SHALL EXCLBERMSRADEUINTIL TH N8T012-INCH ELEVATION AND THE LIFTS NTOURS APPROPRIATE EACHIVEDFORITHEBO IF Q ]. UPON COMPLETION OF THE EMBANKMENT GRADING, THE CONTMCTORSHALL EXCAVATE GRADE UNTILTHEAPPROPRIATE ELEVATIONAND DESIREDCONTOURS ARE ACHIEVED FOR THE BOTiOMAND SIDE SLOPES OF THE BASIN. / 8. CONTRACTOR CONTRACTOR ALL THEN CONSTRTHE UCTION N OF WAY IN CUT STRUCTURES, INCLUDING I STABIWNSTREAM 9. LIZED SOM. THE CONTRACTOR SHALL THEN FINISH CONSTRUCTION OF ALL OUTLET STRUCTURES, INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION. 10. THE CONTFINCTOR SHALL NEXT STABILIZE EXPOSED SOILS BY HYDROSEEDING OR SEEDING OVER STRAW. 11. THE CONTRACTOR SHALL THEN INSTALL THE APPROPRIATE BASIN LANDSCAPING IN ACCORDANCE WITH THE APPROVED PLANS. FACILITY MAINTENANCE: MAINTENANCE OF THE DETENTION BASIN 15 DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE FACILITIES. DURING THESE INSPECTIONS THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTAWATION AND THE OWNER THEREAFTER: 1. MEASURE SEDIMENT ACCUMULATION LEVELS IN THE BASIN. 2. MONITOR THE GROWTH OF THE GROUNDCOVER AND ANY TREES AND SHRUBS PLANTED AS APPLICABLE. RECORD THE SPECIES AND THEIR APPROXIMATE COVERAGE AND NOTE THE PRESENCE OF ANY INVASIVE PLANT SPECIES AS APPLICABLE. 3. INSPECTTH E CONDITION OF STORMWATER INLETS TO THE BASIN FOR MATERIAL DAMAGE EROSION OR UNDERCUTTING. 4. INSPECT THE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY GROWTH, OR GULLY EROSION THAT MAY UNDERMINE EMBANKMENT INTEGRITY. 6. INSPECT BASINOUTILL CHANNEL FOR EROSION UNDERCUTTING III BAR DISPLACEMENT WOODY GROWTH etc. 6. INSPECT CONDITION OF PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SEATING, JOINT FAILURE, LEAKAGE, CORROSION OR OTHER FAILURES. ]. INSPECT CONDITION OF ALL TRASH RACKS, REVERSE SLOPED PIPES OR FLASHBOARD RISERS FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION OR OTHER FAILURES. 8. INSPECT MAINTENANCE ACCESS TO ENSURE IT 15 FREE OF WOODY VEGETATION, AND CHECK TO SEE WHETHER VALVES, MANHOLES AND LOCKS CAN BE OPENED AND OPERATED. 9. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE BASIN FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING. 10. OWNER OR CONTRACTOR SHALL MAKE NEEDED REPAIRS IMMEDIATELY. FACILITY INSPECTION: MULTIPLE INSPECTIONS ARE CRITICAL TO ENSURE THE BASIN(,) ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION 15 DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR WITH THE ENGINEER AND INSPECTOR DURING THE FOLLOWING STAGES OF THE DETENTION BASIN', CONSTRUCTION PROCESS: 1. PRE -CONSTRUCTION MEETING 2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) 3. EXCAVATION/GRADING(e.g.,INTERIM/FINALELEVATIONS) 4. EXTENDED DETENTION BASIN INSTALLATION (e.g., INTERIM AND FINAL ELEVATIONS) 5. INSTALLATION OF THE EMBANKMENT, THE RISER/PRIMARY SPILLWAY, AND THE OUTLET STRUCTURE(,). 6. PLANTING PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT/DIRECTING) 7. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITYACCEPTANCE) RIPRAP CHANNEL DESIGN REQUIREMENTS: 1. RIPRAP SHALL EXTEND UP THE BANKS OF THE CHANNEL TO A HEIGHT OF I8". 2. CONTRACTOR SHALL INSTALL A CLASS U FEETER FABRIC UNDERLAYMENT BENEATH THI STONE. FILTER FABRIC SHALL BE KEYED INTO THE EXISTING GROUND A MINIMUM OF 12" AT ITS ENDS & ALONG THE ENTIRE PERIMETER, 3. A 6" LAYER OF #57 STONE SHALL BE PLACED OVER THE FILTER FABRIC FOR ITS PROTECT ON BEFORE THE TYPE 1 RIPRAP IS INSTALLED. 4. PLACEMENT OF FILTER FABRIC SHALL BE DONE IMMEDIATELY AFTER SLOPE PREPARATION. EDGES OF THE FILTER SHEETS SHALL OVERLAP AT LEAST 9'. 5. STONE PLACEMENT SHALL FOLLOW IMMEDIATELY AFTER PLACEMENT OF THE FILTER FABRIC & #57 STONE. RIPRAP SHALL BE PLACED SO THAT IT PRODUCES A DENSE WELL-GMDED MASS OF STONE WITH MINIMAL VOIDS. THE FINISHED SLOPE SHALL BE FREE OF POCKETS OF SMALL STONE OR CLUSTERS OF LARGE STONES. 6. RIPMP CHANNEL SHALL TIE INTO EXISTING GROUND IN CUT AT A MAXIMUM SLOPE OF 3: 1. ]. RIPRAP CHANNEL SHALL TRANSITION INTO THE DOWNSTREAM OUTLET PROTECTION. B. CONTRACTOR SHALL SCHEDULE A MEETING WITH AN ENGINEERING DEPARTMENT INSPECTOR AT LEAST 24 HOURS IN ADVANCE OF THE CHANNEL CONSTRUCTION. TICKETS FROM THE QUARRY SHALL BE AVAILABLE FOR REVIEW BEFORE STONE PEACE MINIMU C ENSURE CORRECT STONE SIZES, STONE GRADATIONS SHALL MEET MINIMUM CURRENT VDOT ROAD AND BRIDGE SPECIFICATIONS. RIPRAP RNED OUTET PROTECTION DESIGN REQUIREMENTS: 1. RIPRAP LINED OUTLET PROTECTION SHALL BE INSTALLED IN CUT WITH CLASS II FILTER FABRIC UNDERLAYMENT LOCATED IMMEDIATELY UPLAND OF THE FLOODPLAIN. 2. OUTLET PROTECTION FOR THE RIPMP LINED TRAPEZOIDAL CHANNEL SHALL BE 15' LONG & BE FLAT WITH A 0% GRADE. WIDTH AT BEGINNING OF OUTLET PROTECTION-10', WIDTH AT END OF OUTLET PROTECTION=14'. 3, CONTRACTOR SHALL INSTALL A CLASS II FILTER FABRIC UNDERIAYMENT. FILTER FABRIC SHALL BE KEYED INTO THE EXISTING GROUND A MINIMUM OF 12' AT ITS END! & ALONG THE ENTIRE PERIMETER. 4. A 6" LAYER OF #57 STONE SHALL BE PLACED OVER THE FILTER FABRIC FOR US PROTECTION BEFORE THE VDOT STD. TYPE 1 RIPRAP IS INSTALLED. 5. PLACEMENT OF FILTER FABRIC SHALL BE DONE IMMEDIATELY AFTER OUTLET PROTECTION PREPARATION. EDGES OF THE FILTER SHEETS SHALL OVERLAP AT LEAST 9 6. STONE PLACEMENT SHALL FOLLOW IMMEDIATELY AFTER PLACEMENT OF THE FILTER FABRIC & #57 STONE. RIPMP SHALL BE PLACED 50 THAT IT PRODUCES A DENSE WELL -GRADED MASS OF STONE WITH MINIMAL VOIDS. THE FINISHED SLOPE SHALL BE FREE OF POCKETS OF SMALL STONE OR CLUSTERS OF LARGE STONES. 7. OUTLET PROTECTION SHALL TIE INTO EXISTING GROUND IN CUT AT A MAXIMUM SLOPE OF 3:1. 8. CONTRACTOR SHALL SCHEDULE A MEETING WITH AN ENGINEERING DEPARTMENT INSPECTOR AT LEAST 24 HOURS IN ADVANCE OF THE OUTLET PROTECTION CONSTRUCTION. TICKETS FROM THE QUARRY SHALL BE AVAILABLE FOR REVIEW BEFORE STONE PLACEMENT TO ENSURE CORRECT STONE SIZES. STONE GRADATIONS. SHALL MEET MINIMUM CURRENT VON ROAD AND BRIDGE SPECIFICATIONS. DRY DETENTION CELL SECTION -- DRYDETENTION ELL RIS R FOUN ATION NOTE.. TO REDL CON NECON ICE THE I SHALL PER OF BE FI FLOATAT RMLY EM ON, RISE 3EDDED R BASE F INTO , BARRE N 18" THICK FEE INFORC D CONCRETE FO NDATIO THAT I 8'XB' BURIED UTSIDE THE LINT ITS OFT E EXCA ATION. 370 370 MH-1 WITH A RIM ELEV TION O [35].50' EXISTING A 7 OVE RASHR,RCK THE MIT THE MH SHALL UPP 1's UPPOVE BE INSH R 024" ILUCID PEKINGPEKING GRADE INRS MHA1 OVER. TODOF INCLUDE FLU 365 o IFICE IFICE WITH TH N D N365 Zoo 365z.00' 365 PROPO ED 10' ME TOP OF D, M ELEV. 360'. PROPOSED AMEND GR 4ENT. DI kDING A VY DETET PER360 TION 360 CELL'$ •LUME 'B EN RGED. f ;n x x 355 355 ASIN B OM S ALL ED VEPosi VESLCP PETOT T E RISER IN ALL CES 2 350 PPROV D Ok? 4' DPE DRY 350 ETENTI N CELL Lv VDOT TD. EW 1.(64.0'P O. 51,INV. IN=350. 0', INV. OUT=34 ER) L WITH EIRIFTUPLEI 12" F BOTTOM, IB" C ANNHE EPTH & CHANN :1 345 SIDE SLOPES. CHANNEL PROPOSED IN C M NT L= T WITH A FILTE 2 34S DR> JJ r M m to r7 O N M O N O1'j N UD r7 m N N r'1 M Cl ro AD W Ili M M M M M 0+50 1+00 1+50 2+00 2+25 A DRY DETENTION CELL SPILL (APPROVED) APPROVED SO' WIDE TOP 365 OF DAM EI EV.=360'. 365 -CONTRACTOR SHALL INSTALL A COMPACTED CLAY CORE w/ A CUTOFF TRENCH. EMBANKMENT TO BE IN ACCORDANCE M/ THE DESIGN SHOWN ON L36 THESE PLANS. APPROVED 50' WIDE VDOTCL. Al EC-1 RIPRAP LINED EMERGENCY SPILLWAY CREST ELEVATION= 358.66'. SPILLWA` TO HAVE 4:1 SIDE SLOPES PROFILE SCALES: II 'q p . 1 p 1 -S0 (H) W Ili M M M M M M 0+50 0+75 TH OFD f� Q SCOOT R. COLLINS'z U No. 35791 Y vsSZONAL E V/ Oz Z c 0�= I� DA O N Q I`..I o �_ LU it Q rl Z ^ W L^ J M - � Q < c ry z LU W p 2: J N Q J CD z U LU N Q Z WN J o > ZLL 2:z = J V) � J > W > 1 p ' n U) } V LU O z p r Z J LU - Q H 2 � WU a W Q w H J E ' r . U) Q LUFz � z Z LJ w o IY = U) z J F o LU J LU LU �Q LL V LL _ O p W U Q c G SQ O ` i JOB NO.� 172131 SCALE AS SHOWN o SHEET N0. 8 LOADS CMP PROTECTION SLAB 18-11 ACCESS CASTING ,E RINGS AS REQUIRED, TO ED AND INSTALLED BY OR MAYBE TOP MOUNTED OR RECESSED, d' GASKET MATERIAL 0 CMP RISER - SUFFICIENT TO PREVENT CONSTRUCTION LOAD SLAB FROM BEARING ON RISER TO BE PROVIDED BY GB FOR TEMPORARY CONS N VEHICLE LOADS, AN EXTRA AMOUNT OF COMPACTED COVE BE REQUIRED OVER Cg1TRACTOR. THE TOP OF THE PIPE. THE T-0E-COVER SHALL MEET THE MINIMUM REQUIREMENTS IN THE TABLE BELOW. THEUSE OFHEAWCONSTR 1 EQUIPMENT NECESSITATES GREATER PROTECTION F PIPE THAN FINISHED SECTION VIEW GRADE COVER MINIMUMS FOR AL HIGHWAY TRAFFIC. AXLE LOADS ACCESS CASTING NOT SUPPI PI L (kips) N 1850 IMU 7EROF5A10 1 O A MINIMUM COVER (FT) 'd 12-42 2.0 2.5 3.0 3.0 -'r- � I p4 DIAGONAL TRIM v 48-72 0 3.0 3 4.0 BAR (TYP.4PLACES), SEE NOTE 7. ]8-120 3.5 4.0 - --- k-_--.+1- =ti - 128-144 3. 4.0 .5 4.5 I1 II (- 'MINIMUM COVER MAY VARY, DEPENDING ON LOCAL CO IS MEASURED RED F MUST PROVIDE THE ADDITIONAL ONAL p COVER REQUIRED TO AVOID DAMAGE TO THE PIPE. MINIM R IS MEASURED FROM THE TOP OF THE PIPE TO T ' Gp p� \ THE TOP OF THE MAINTAINED CONSTRUCTION ROADWAY S E. P /I 1 :< .,I SCOPE THIS SPECIFICATION INSTALUTION OF TH THE PROJECT PLANS. MATERIAL THE ALUMINIZED TYP APPLICABLE REQUIRE PIPE THE CSP SHALL B APPLICABLE RE PIPE SIZES, G A THE PROJE NS. OPENING IN PROTECTION SLAB FOR ACCESS INTERRUPTED BAR REPUCEMENT, SEE NOTE 6. COVERS THE GWRE AND E SHALL BE IN ACC NICE WITH RECOMMENDATIONS OF THE CORRUGA EL PIPE (CSP) DETAILED IN NATIONAL CORRU STEEL PIPE ASSOCIATION (NCSPA) INSTALLATION SHALL BE IN ACCORDANC A45HT0 STANDARD E2S ILS SHALL CONFORM TO THE SPECIFICATIONS FOR HIGH RIDGES, SECTION 26, DIVISIIX411 M FAASHT0 M2]4 ORASTM A929. 0R ASTM A798 AND IN CONF CE WITH THE PROJECT PLANS AND SPECIFICATIONS. IF THE ANY INCONSISTENCIES OR CONFLICTS THE CONTRACTOR S DISCUSS AND RESOLVE WITH THE SITE ENGINEER. UFACTURED IN ACCORDANCE WITH THE MENTS OF AASHT0 M36OR ASTM A]60. THE IT IS ALWAYS THE RE3F0NSIBILITYO CONTRACTOR TO NO CORRUGATIONS SNALL BE AS SHOWN ON FOLLOW OSHA GUIDELINES FOR SAFE ICES. THE PRODUCT SHALL OCCUR WITHIN THE MATERIAL SPECIFICATION NOT TO SCALE TRENCH CONDITION EMBANKMENT CONDITION ✓i�%'�� FINAL BACKFILL J INITIAL BACKFILL 1 6 O 5 E 4 0 tip - Vi F 5 � BEDDING FOUNDATION 2 ". BACKFILL REQUIREMENTS FOLLOW THE GUIDELINES OF AA] 1 MINIMUM TRENCH WIDTH MUST ALLOW ROOM FOR FROM THE MINIMUM TRENCH WIDTH (12.6.6.1): PIPE s 12': D+16' PIPE> 12: 1.513 a 12' Is MINIMUM EMBANKMENT WIDTH ON FEET) FOR INITIAL FILL PIPE <2_ JM4. D II PIPE> 144': D a 1010" 2 THE FOUNDATION UNDER THE PIPE AND SIDE BA S 3 BEDDING MATERIAL SHALL BE A REUTIVELY MATE MINIMUM OF TWICE THE CORRUGATION DE THICKN DEPTH (26.3.8.1, 26.5.3). 4 CORRUGATED STEEL PIPE (CSP IHEL- ETER MIN. COVER CORR. PROFILE 6"-10' 12' 11x 1/4' 12.1 12' 22/3'x1/2' 54'-98' 12' 3' x 1', 5' x 1' 102'-144" 0M (SEC 12) AND CONSTRUCTION (SEC 25) :H MATERIALS UNDER THE PIPE. BE ADEQUATE P)FORT�C THE LOADS ACTING UPON IT (25S.2). THAT IS ROUGHLY D TO FIT THE BOTTOM OF THE PIPE, AND A 'ITH THE MAXIMUM LE SIZE OF ONE-HALF OF THE CORRUGATION /MCR.L NCH ZONE MATERIAL SHALL D SHOVELED OR SHOVEL SLICED INTO PLACE TO ALL R PROPER COMPACTION (28.5.4). AL BACKFILL FOR PIPE E ENT TO MEET AASHTO A-1, A-2 OR AS CLASSIFICATION, OR A ED EQUAL, COMPACTED TO 90% STANDARD PROCTOR (T 99). UM PARTICLE SIZE NOT TO EXCEED 3'(12.4.1.2). ALL LIFTS PUC CONTROLLED MANNER. IT OMMENDED THAT LIFT EXCEED AN B'UNCOMPACTED LIFT HEIGHT TO PREVENT UNEVEN ,AND THE LESSER OF'13 DIAMETER0R24"A MAXIMUM DIFFERENTIAL SIDE-TO AL BACKFILL AS ALL MAY INCLUDE ROAD BASE MATERIAL (AND RIGID PAVEMENT IF APPLICABLE). LE ABOVE. L HEIGHT 0 PACTED COVER FOR CONVENTIONAL HIGHWAY LOADS IS MEASURED FROM TOP OF PIP OTTOM OF IBLE PA OR TOP OF RIGID PAVEMENT (12.8.6.3). L BAC TERIAL SELECTION AND COMPACTION REQUIREMENTS SHALL FOLLOW THE PROJECTPUNS AND FICATIONSTHE EER OF RECORD (26.5.4.1).LE SHOULD BE CONSIDERED FOR USE TO PREVENT SOIL MIGRATION INTO VARYINGSOIL TVPE3(PROJECTENGINLTIPLE BARREL INSTALLATIONS THE RECOMMENDEDSTANDARD SPACING BETWEEN PARALLEL PIPE RUNS SHALL BE P .12 LESS THAN 12'. OR 36" FOR PIPE DIAMETERS 72" AND LARGER. ACT YOUR CONTECH REPRESENTATIVE FOR NONSTANDARD SPACING (TABLE C12.6.7-1). TYPICAL BACKFILL DETAIL NOT TO SCALE BY C CH B N4 DIAGONAL BAR (TVP.4 PLACE SEE NOTE ). 2" COVER F. it OPENING IN ---_- PROTECTION -- SLAB F. STANDARD STANDARD REINFORCING, EINFORCING, SEE TABLE SEE TABLE ROUND OPTION PLAN VIEW NOTES: 1. DESIGN IN ACC CE WITH AASHTO, 17M EDITION AND 2. DESIGN L S. 3. BART R=1'MAX. 4. C TE STRENGTH=4,000 psi 5. FORCING STEEL =ASTM A615, GRACE 60. ROVIDE ADDITIONAL REINFORCING AROUND OPENINGS EQUAL TO THE BARS INTERRUPTED. HALF EACH SIDE. ADDITIONAL BARS TO BE IN THE SAME PLANE. 20 MIL PE IMPERMEABLE LINER OVER TOP OF PIPE NOTE: IF SALTING AGNRPED OW AND ICE REMOVAL ARE PROJECT AGEOMEMIER I3 RECOMMENCED WITF GEDTOHELP PROTECTTHEV POTENTIAL ADVERSEAT MAY RESULT FROM A CH 3URR0UNDING ENVIERA PERIOD GUIDEOFTIME. PILJCOAEDMTION DESIGN GUIDE FOR I'^121/8•�'II f~101/4"---1 I SINGLE _ft BOLT Al CONNECTION DETAIL (SBBS) REINFORCING TABLE **BEARIN 0 CMP A B 0 REINFORCING PRESS RISER (P 24' 4'0 N5010'0QEW 4'x4E NO TO.00EW 0 �" 4'." NO OCEW 2,260 ,EHVx4'-8" N @TOCEW 38"N5@8'0C, N5�9'0CEW t 44 N5 � 8' 1,3]0 58" jW1,21 N6 EW 1,270 1 lit-L,r- �4y REPLACEMENT, SEE NOTE 6. SQUARE OPTION PLAN VI 7. TRIM OPENING WITH DIAGONAL N4 \ARCHITECTS MINIMUM OF 12' BEYOND OPENINGD TO MAINTAIN BAR COVER, 8. PROTECTION SLAB AND ALL MATERD INSTALLED BY CONTRACTOR 9. DETAIL DESIGN BY DELTA ENGINEED SURVEYORS, SHOWELL, NY. MANHOLE CAP DETAIL NOT TO SCALE LIMITSOF - REQUIRED BACKFILL 38" SEE TYPI BACKFILL D NOTES EAR THE �O . THE THE THE )RMATION. I Q� P HUGGER BAND FLAT GASKET FLAT GASKET 2 2 l/2" RE -ROLLED END HEL-COR PIP14 /SIONS NOTES: T IS TO BE ASS D PER AASHTO BRIDGE CONSTRUCTION SPECIFICATION SEC 28.4.2.4. MATERIALS OR COATING CAN VARY BY LOCATION. CONTACT YOUR CONTECH REPRE S ARE SH TO MATCH THE PIPE -ARCH WHEN APPLICABLE. SARE ALLY FURNISHED AS FOLLOWS: 2'TH 1-PIECE4' ' 2.PIECES02' 144'&PIECES ENERS ARE ATTACHED WITH SPOT WELDS, RIVETS OR HAND WELDS. 13 RER0LLED TO HAVE ANNULAR END CORRUGATIONS OF 2 21T.112"SIONS ARE SUBJECT TO MANUFACTURING TOLERANCES. R SHALL DESIGNATE GASKET OPTION, IF REQUIRED (SEE DETAILS ABOVE). H-12 HUGGER BAND DETAIL NOT TO SCALE I`x" a a ®® eacM1ea wit `0/B'leelener ®®® r-�/tl" aio- holes ®®C ®®® isometric nLv 1/a' HDPe ple4e (op41onn0 O e°iie E`nole: a 8ii"pI. 000 a°I Heo, Ir o a 0000 CCLIOR so ot.ans r' are �e1 El -.Li - PLASTIC p.a. Aoa a18e DEBRIS CAGE sot.uTloes INC. a: rYPIcai, nerrn,s PLAN4IEVJ .aw FLOw Tot�v[R�UwtlwdD_ - --cwrueIIIi�IIsI�OF. - ' _ .�III_III_ c�mssLrsE iow crav PROFILE fWITN UPPER FWETLANOI HNnrlply ono HPrpnnL IIIIIFdII�I TO WETP III '�II8I EIIE„II�E = ra SLaFE LaY�FLow van w PROFILE (ZZUT UPPER SHELF V OETLANDI Figure UtT. H44P0Ntl D-gG Schematics APPROVED WET POND CONSTRUCTION NOTES: FACILITY PLANTING SPECIFICATIONS: 1. THE CONTRACTOR SHALL ESTABLISH AND MAINTAIN A VEGETATIVE COVERAGE IN THE POND AND ITS BUFFER. 2. THECONTRACTOR SHALLALSO INSTALLTHE WETLAND SHELF AND AQUATIC BENCH PLANTINGS, AS REQUIRED, AND USE NUTRIENT RICH SOIL IN THESE AREAS TO PROMOTE HEALTHY GROWTH AND ROOT DEVELOPMENT. 3. PUNT SELECTION SHALL PROMOTE DIVERSE WILDLIFE AND WATERFOWL USE WITHIN THE STORMWATER WETLAND, AQUATIC BENCH AND BUFFERS. 4. WOODY VEGETATION MAY NOT BE PUNTED OR ALLOWED TO GROW WITHIN 15 FEET OF THE TOE OF THE EMBANKMENT NOR WITHIN 25 FEET FROM THE PRINCIPAL SPILLWAY STRUCTURE. S. AVEGETATED BUFFER SHALL BE PROVIDED THAT EXTENDS AT LEAST 25 FEET OUTWARD FROM THE MAXIMUM WATER SURFACE ELEVATION OF THEW POND. PERMANENT STRUCTURES (E.G., BUILDINGS) SHALL NOT BE CONSTRUCTED WITHIN THE BUFFER AREA. EXISTING TREES SHALL BE PRESERVED IN THE BUFFER AREA DURING CONSTRUCTION IF POSSIBLE. 6. THE SOILSIN THE STORMWATER BUFFER AREA ARE OFTEN SEVERELY COMPACTED DURING THE CONSTRUCTION PROCESS TO ENSURE STABILITY. THE DENSITY OF THESE COMPACTED SOILS CAN eE SO GREATTHAT IT EFFECTIVELY PREVENTS ROOT PENETRATION AND, THEREFORE, MAY LEAD TO PREMATURE MORTALITY OR LOSS OF VIGOR. AS A RULE OF THUMB, PLANTING HOLES SHALL BE THREE TIMES DEEPER AND WIDER THAN THE DIAMETER OF THE ROOT BALL FOR BALL -AND -BURLAP STOCK, AND FIVE TIMES DEEPER AND WIDER FOR CONTAINER -GROWN STOCK. 7. AVOID SPECIES THAT REQUIRE FULL SHADE, OR ARE PRONE TO WIND DAMAGE. EXTRA MULCHING AROUND THE BASE OF TREES AND SHRUBS IS STRONGLY RECOMMENDED AS A MEANS OF CONSERVING MOISTURE AND SUPPRESSING WEEDS. CONTRACTOR REQUIREMENTS: 1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PUNS. 2. UNDSCAPECONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL INFORMATION. THE CONTRACTOR SHALL ABIDE BY ITS CONTENTS; HOWEVER ANY NOTES OR SPECIFICATIONS ON THE PUNS SHALL SUPERSEDE THOSE OUTLINED IN THE SPECIFICATIONS MANUAL (COPIES ARE AVAIUBLE FOR A FEE FROM THE VIRGINIA CHAPTER OF THE AMERICAN SOCI ETY OF LANDSCAPE ARCHITECTS, VIRGINIA NURSERYMEN'S ASSOCIATION, INC. AND THE VIRGINIA SOCIETY OF LANDSCAPE DESIGNERS). 3. ALL PUNT MATERIAL SHALL MEETTHE MINIMUM SPECIFICATIONS AND STANDARDS DESCRIBED IN THE CURRENT ISSUE OF THE AMERICAN STANDARD FOR NURSERY STOCK, PUBLISHED BY THE AMERICAN ASSOCIATION OF NURSERYMEN, 1250 STREET, NW, SUITE 500, WASHINGTON, DC 20005. 4. THE CONTRACTOR SHALL VERI FV ALL DI MENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PUN. 5. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES(ULL MISS UTILITY I-800-552-7001 BEFORE ANY EXCAVATION). 6. REFER TO TH E APPROVED CONSTRUCTION PUNS FOR ANY DETAILED SITE INFORMATION. J. ALL WORK SHALL BE COORDI NATED WITH OTHER PARTI ES. 8. PUNTS WILL BE PREPARED FOR SHIPMENT INA MANNER THAT WILL NOT CAUSE DAMAGE TO THE BARK, BUDS, BRANCHES, STEMS, OR OVERALL SHAPE OF THE STOCK. CONTAINER GROWN PUNTS WILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE BEEN GROWN. 9. ALLPLANTMATERIAL, UNLESS OTHERWISE SPECIFIED, SHALL BE UNIFORMLY BRANCHED AND HAVE A VIGOROUS ROOT SYSTEM. PUNT MATERIAL SHALL BE HEALTHY, VIGOROUS, AND FREE FROM DEFECTS, DECAY, DISEASES, INSECT PEST EGGS, AND ALL FORMS OF INFESTATION. ALL PUNT MATERIAL SHALL BE FRESH, FREE FROM TRANSPLANT SHOCK OR VISIBLE WILT. PUNTS DEEMED UNHEALTHY WILL BE REJECTED. l0.ALL CONTAINER STOCK SHALL HAVE BEEN PROPAGATED INA CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD ITS SOIL. CONTAINER STOCK WITH POORLY DEVELOPED ROOT SYSTEMS WILL NOT BE ACCEPTED. 11.PUNTS NOT INSTALLED ON THE DAY OF ARRIVAL ON SITE SHALL BE STORED AND PROTECTED BY THE CONTAINER. OUTSIDE STORAGE AREAS WILL BE SHADED AND PROTECTED FROM THE WIND AND SUN. PUNTS STORED ON SITE SHALL BE PROTECTED FROM ANY DRYING AT ALL TIMES BY COVERING THE BALLS OR ROOTS WITH MOIST SAWDUST, WET BURUP, WOOD CHIPS, SHREDDED BARK, PEAT MOSS, OR OTHER SIMILAR MULCHING MATERIAL. 12. THE OWNER RESERVES THE RIGHT TO SUBSTITUTE PLANT MATERIAL TYPE, SIZE AND/OR QUANTITY. ANY SUBSTITUTIONS MUST BE APPROVED BY THE DESIGNER. LE MINOR FIELD ADJUSTMENTS MAYBE NECESSARY DUE TO SITE CONDITIONS (EX: ROOTBALLAND UTILITY CONFLICT). MAJOR ADJUSTMENTS MUST BE APPROVED BY THE DESIGNER. 14.NO PUNTING SHALL OCCUR WHEN THE SOIL IS FROZEN. 15.PUNT MATERIAL SHALL BE PLACED IN EXISTING SOIL WITH EACH PLANTING PIT EXCAVATED TO A SIZE SUFFICIENT TO CONTAIN THE ENTIRE ROOT BALL OR ROOT MASS, WITHOUT CRAMPING ROOT STOCK. 16.THE CONTRACTOR SHALL MAINTAIN A ONE (1) CALENDAR YEAR 90%CARE AND REPUCEMENT WARRANTY FOR ALL PANTINGS. THE PERIOD OF CARE AND REPLACEMENT SHALL BEGIN AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PUNTS AND CONTINUE FOR ONE CALENDAR YEAR. 1].THE CONTRACTOR 15 RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PUNTING ON A DAILY BASIS. 18.THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE CONTRACTOR'S CONTROL. FACILITY CONSTRUCTION: 1. THE CONTRACTOR SHALL USE THE WET POND MAN E&S CONTROL STRUCTURE, IF SHOWN IN THIS MANNER ON THE APPROVED ESC PUNS. IF APPLICABLE, THE WET POND SHALL SERVE AS A SEDIMENT BASIN DURING PROJECT CONSTRUCTION. IF THIS IS DONE, THE VOLUME SHALL BE BASED ON THE MORE STRINGENT SIZING RULE (EROSION AND SEDIMENT CONTROL REQUIREMENT VS. WATER QUALITY TREATMENT REQUIREMENT). INSTALLATION OF THE PERMANENT RISER SHALL BE INITIATED DURING THE CONSTRUCTION PHASE, AND DESIGN ELEVATIONS SHALL BESET WITH FINAL CLEANOUT OF THE SEDIMENT BASIN AND CONVERSION TO THE POST -CONSTRUCTION WET POND IN MIND. THE BOTTOM ELEVATION OF THE WET POND SHALL BE LOWER THAN THE BOTTOM ELEVATION OF THE TEMPORARY SEDIMENT BASIN/TRAP WHEN POSSIBLE. APPROPRIATE PROCEDURES SHALL BE IMPLEMENTED TO PREVENT DISCHARGE OF TURBID WATERS WHEN THE BASIN/TRAP IS BEING CONVERTED INTO A WET POND. 2. WET PONDS SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE POND IS COMPLETELY STABILIZED. IF THE PROPOSED POND SITE WILL BE USED AS A SEDIMENTTRAP OR BASIN DURING THE CONSTRUCTION PHASE, THE CONTRACTOR SHALL DE -WATER, DREDGE AND RE -GRADE THE SEDIMENT CONTROL FACILITY TO DESIGN DIMENSIONS AFTER THE ORIGINAL SITE CONSTRUCTION IS COMPLETE. 3. THECONTRACTOR SHALL ASSEMBLE CONSTRUCTION MATERIALS ON -SITE, MAKING SURE THEY MEET DESIG N SPECI FICATIONS AND ARE PREPARED AT STAGING AREAS WHEN POSSIBLE. 4. THE CONTRACTOR SHALL CLEAR AND STRIP THE PROJECT AREA IF REQUIRED TO THE DESIRED SUB GRADE. RIOR TO TEM RY ERING CES 5. THE CON AT R DIVERSION INSTALLS&. ALL AREAS SURROUNDING POND INCLUDING GRADED RDENUDED DURING CONSTRUCTION AND STORM WATER DIVERSION PRACTICES. ALL AREAS SURROUNDING THE POND THAT ARE GRADED OR DENUDED DURING CONSTRUCTION MUST BE PLANTED WITH TURF GRASS, NATIVE PLANTINGS, OR OTHER APPROVED METHODS OF SOIL STABILIZATION. 6. THE CONTRACTOR SHALLAPPLICABLE SO EXCAVATEOUTFLOW THE CORESTRUCTURES TRENCH AND INSTALL THE SPILLWAY THECONTRAC. J. OVERFLOW ANDDAPPLIRE CONSTRUCTED STEVEL AT THE DESIBE GN THE CONTRACTOR SHALL ENSURE THE TOP INVERT OF THE THE OVERFLOW WEIR(S) SAKE CONSTRUCTED LEVEL A EMBANKMENT DESIGN ANY INION(5). 8. COMPLETED WITHALL CONSTRUCT THE QUIPME T. THE CD TR CTORNAL SHALL AMSIN 8-TO ERETO NCHTHE LIFTS, COMPACTION SHALL O COMPLETED IN LIFTS WITH APPROPRIATE EQUIPMENT. THE CONTRACTOR SHALL ALSO ADHERE TO THE CLAY LINER SPECIFICATIONS OUTLINED IN TABLE 14.4 BELOW: T,01, fAA Clay Liner SpecrScaoons Soun'z: VL- inia 3lmmwaln Mal enk HallBDod[ 1989 9 agem S ) 9. EXCAVATION AND GRADING TO THE APPROPRIATE ELEVATIONS AND DESIRED CONTOURS SHALL BE ACHIEVED FOR THE BOTTOM AND SIDE SLOPES OF THE POND. 10. THE EMERGENCY SPILLWAY SHALL BE CONSTRUCTED IN CUT WHERE POSSIBLE, OR IN STRUCTURALLY STABILIZED SOILS. 11.THE OUTLET PIPES, INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION, SHALL BE INSTALLED. 12. EXPOSED SOILS SHALL BE STABILIZED WITH TEMPORARY SEED MIXTURES APPROPRIATE FOR THE POND BUFFER. ALL AREAS ABOVE THE NORMAL POOL ELEVATION SHALL BE PERMANENTLY STABILIZED BY HYDROSEEDING OR SEEDING OVER STRAW. 13. THE POND BUFFER AREA SHALL BE PUNTED WITH A VEGETATIVE GROUND COVER AND THE CONTRACTOR SHALL THEN INSTALLTHE APPROPRIATE BASIN LANDSCAPING IN ACCORDANCE WITH THE APPROVED PLANS. (CALL CONSTRUCTION SHALL ADHERE TO THE VIRGINIA DIED POST CONSTRUCTION BMP CLEARINGHOUSE REQUIREMENTS SET FORTH IN DESIGN SPECIFICATION NUMBER 14. FACILITY MAINTENANCE: MAINTENANCE OF THE WET POND(S) IS DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE POND. DURING THESE INSPECTIONS THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION, AND THE OWNER THEREAFTER: 1. MEASURESEDIMENTACCUMULATIONLEVELSINTHEFOREBAY. 1. MONITOR THE G ROWTH OF WETUNDS, TREES AND SHRUBS PLANTED, AS APPLICABLE. RECORD THE SPECIES AND THEIR APPROXIMATE COVERAGE, AND NOTE THE PRESENCE OF ANY INVASIVE PUNT SPECIES, AS APPLICABLE. 2. INSPECTTHE CONDITION OF STORM-11 INLETS TO THE POND FOR MATERIAL DAMAGE, EROSION OR UNDERCUTTING. 3. INSPECT THE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY GROWTH, OR GULLY EROSION THAT MAY UNDERMINE EMBANKMENT INTEGRITY. 4. INSPECTPOND OUTFAU. CHANNEL FOR EROSION, UNDERCUTTING, RIP -RAP DISPUCEMENT, WOODY GROWTH, ETC. 5. INSPECT CONDITION OF PRINCIPAL SPILLWAY, EMERGENCY SPILLWAY, RISER, ORIFICES & TRASHRACKS FOR EVIDENCE OF SPALLING, JOINT FAILURE, LEAKAGE, CORROSION OR OTHER FAILURES. 6. INSPECT CONDITION OF ALL TRASH RACKS OR FLASHBOARD RISERS FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION OR OTHER FAILURES. J. INSPECT MAINTENANCE ACCESS TO ENSURE IT IS FREE OF WOODY VEGETATION, AND CHECK TO SEE WHETHER VALVES, MANHOLES AND LOCKS CAN BE OPENED AND OPERATED. 8. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE POND FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING, AND MAKE NEEDED REPAIRS IMMEDIATELY. 9. REPAIRANDREPLACEASNECESSARY. 1O.PUASE SEETHE TABLE BELOW FOR ADDITIONAL MAINTENANCE MEASURES ABOVE AND BEYOND THOSE OUTLINED ABOVE: Pra PermeaB'uity Test Method ASTM o-z434 UnA cmla�e 3 if lim 1 x 1D Plasticly Inaex p(Clay Li uid Umit of Cla ASTM 0-62314]b ASTM D2216 % % Nal less than 15 Nol less than 30 Clay Comet Glonss ASTM U2216 % 95%pf 5landa tl Got Den - TaeM ls.S rypva/welao�re Ma..ravu.rre rasxaam �nmxy MainlellenTP Remx FreRuenry Qua�ierly or after major storms • Remot+e tlebnsa �blpckades (=1 Inch of IaII11alU Repair undercut emAeq antl bam soil oleos • Mowing T�ayxar • Geanupm removevasn, oelxs and fl0UahIB5 - nspeGlon • Open ruD the nseltD �sl the Annraly access antl valves • Repair broken mechani©I comppnents,Aneetletl • Pond 6uff4T anda4ua4c ppnch relnloTcpment plan5ngs Ore fine-0uring�IHe sernlw rdkwd skuckrn �rlM Eray 5}n 758ars • R a hser andas II xnevletl Flon5b25ym15 FACILITY INSPECTION: MULTIPLE INSPECTIONS ARE CRITICAL TO ENSURE THE BASIN(5) ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR, WITH THE ENGINEER AND INSPECTOR, DURING THE FOLLOWING STAGES OF THE WET POND'S CONSTRUCTION PROCESS: 1. PRE -CONSTRUCTION MEETING 2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS) 3. EXCAVATION/GRADING (E.G., INTERIM/FINAL ELEVATIONS) 9. WET POND INSTALLATION(E.G., INTERIM AND FINAL ELEVATIONS) 5. INSTALLATION OF THE EMBANKMENT, EMERGENCY SPILLWAY, THE RISER/PRIMARY SPILLWAY AND THE OUTLET CONTROL STRUCTURE(5). PU NTING LANTING AND VEGETATIVE STABILIZATION PHASE(WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT) J. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) TH OFD f� O SCOTT R. CGLLINS'z U No. 35791 Y AA w¢ �sSZONAL E� W M Ln cWc J = � G QQL Q r . o Z W z Qi � o N - W N J OZS r a V7 c > � W = Zw � ~: � LIE)\Z / L - U) 1 Z - LLI � cWc < G r Z w ' Z� W 0 a Q � Q Q W � Lu < �r Y � Q I- I■ ■A■ � J ter/ £ ■ Q L L ZW Ln = w o 0 � � W Ja Ewa OCD ILL 04 O W U Q a G Q E O a JOB NO.0 172131 SCALE AS SHOWN SHEET N0. 9 SECTION Section 6 - Pollution Prevention Plan A. Plan showing pollution activities and prevention practices SEE EXHIBIT SHEET. B. Sources of Pollutants, locations, and prevention practices Pollutant, or Pollutant Prevention Practices, Control Generating Activity Location on site Measures SEE BELOW. C. Sources of Pollutants, continued. Common activities and minimum control and prevention practices Pollutant, or Pollutant Location on site Prevention Practices, Control Measures Generating Activity Follow Erosion and Sediment Control Plan. Clearing, grading, excavating, Land disturbance area Dispose of clearing debris at acceptable disposal and un-stabilized areas sites. Seed and mulch, or sod within 7 days of land clearing Cover storm drain inlets and use drip pans and v/ Paving operations Roads and driveways absorbent/oil dry for all paving machines to limit leaks and spills Concrete washout and Current location and detail Direct concrete wash water into a leak -proof cement waste shown on PPP container or leak -proof sediment basin that is designed so that no overflows can occur Enclose or cover material storage areas. Mix paint indoors in a containment area or in a flat Structure construction, stucco, Structures unpaved area. Prevent the discharge of soaps, painting, and cleaning solvents, detergents and wash water, paint, form release oils and curing compounds. ✓ Dewatering of sediment Water shall be filtered, settled or similarly treated Dewatering operations basins prior to discharge as shown on plan. Designated area shown on Designated areas for material delivery and Material delivery and storage plan storage. Placed near construction entrances, away from waterways and drainage paths Material use during building Building areas Follow manufacturer's instructions. MSDS's v/ process attached. Waste collection area will not receive a substantial amount of runoff from upland areas ✓ Current designated container and does not drain directly to a waterway. Solid waste disposal areas on plan Containers have lids covered before periods of rain, or are in a covered area. Scheduled collection to prevent overfilling. MATERIALS NOT TO BE BURIED ON -SITE Convenient and well -maintained portable Current locations shown on sanitary facilities will be provided, and located Sanitary waste plan away from waterways or inlets. Such facilities shall be regularly maintained. Pollutant, or Pollutant Location on site Prevention Practices, Control Measures Generating Activity ✓ Landscape areas shown on Apply fertilizers in accordance with Landscaping operations plan manufacturer's recommendations and not during rainfall events To be treated in a sediment basin or better control as specified on plan. Minimize the Wash Waters Wash areas shown on plan discharge of pollutants from equipment and vehicle washing Vehicle and equipment washing Designated areas and details Provide containment and filtering for all wash shown on plan waters per the plan 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. D. Non-stormwater discharges Discharge Pollutants or Pollutant Location on Site Constituents N/A Persons responsible for pollution prevention practices The qualified personnel, the contractor listed below, will be responsible for the implementation and maintenance of the pollutant control measure. This may include delegating this responsibility to other contractors as they become involved with the project and begin the anticipated pollutant generating activity. DEVELOPER: ALAN TAYLOR— RIVERBEND DEVELOPMENT 434.245.4970 alan@riverbenddev.com F. Response and reporting practices The first priority is to protect all people, secondly protect the equipment and property, and lastly protect the environment. The contractor shall regularly check the equipment on site and any pollutants shall be stored properly to prevent spills. Spills will be immediately and promptly cleaned up by the contractor. Most spills can be cleaned up following manufacturer specifications. Absorbent/oil dry, sealable containers, plastic bags, and shovels/brooms are suggested minimum spill response items that should be available at this location. The following steps shall be taken in the case of a spill: Check for hazards (flammable material, noxious fumes, cause of spill) — if flammable liquid, turn off engines and nearby electrical equipment. If serious hazards are present leave the area and call 911. Large spills are likely to present a hazard. Make sure the spill area is safe to enter and that it does not pose an immediate threat to health or safety of any person. 3. Stop the spill source (most spills can be cleaned up following manufacturer specifications — absorbent/oil dry, sealable containers, plastic bags, and shovels/brooms are suggested minimum spill response items) 4. Call co-workers and supervisor for assistance and to make them aware of the spill and potential dangers. 5. If possible, stop spill from entering drains (use absorbent or other material if necessary). 6. Stop spill from spreading (use absorbent or other material if necessary). 7. If spilled material has entered a storm sewer; contact locality's storm water department. 8. Clean up spilled material according to manufacturer specifications, for liquid spills use absorbent materials and do not flush area with water. 9. Properly dispose of cleaning materials and used absorbent material according to manufacturer specifications. The following agency should be considered for notification in the case of a spill: Charlottesville Albemarle Fire Department: 434-296-4825 Albemarle County Police Department: 434-977-9041 Charlottesville Health Department: 434-972-6200 Virginia Department of Conservation & Recreation: 1-804-786-2094 Virginia Department of Environmental Quality: 1-540-574-7824 Virginia Department of Emergency Services: 1-800-468-8892 G. Pollution Prevention Awareness DEQ's Office of Pollution Prevention hosts a number of programs and initiatives that serve as a conduit for non -regulatory assistance to businesses and communities. The contractor will ensure that their team is trained and knowledgably aware of all measures in this document before construction begins and updated weekly of any changes during construction. _ If - i f 11 - I � 4 1) , 0 �J- / WHEEL WASH WATER & OTHER WASH WATER. 1. THE CONTRACTOR SHALL MINIMIZE DISCHARGE OF POLLUTANTS FROM01 EQUIPMENT & VEHICLE WASHING / WASH WATERS FROM THE CONSTRUCTION ENTRANCE SHALL BE TREATED VIA I EXISTING TREELINE (TYP.) THE DOWNSLOPE SEDIMENT TRAP. I I III I I 1 1 I \R 1\\\ ) Q 1 -2. THE FUELING TANK SHALL BE COMPLETELY SURROUNDED BY A 2' DEEP, 2' WIDE PROPOSED SAFETY p FENCE AROUND \ EARTHEN BERM WITH A HEAVY MIL POLYETHYLENE LINING. THE PROPOSED BERM.SEDIMENT TRAP-p SHALL CONTAIN FUEL SHOULD IT BE SPILLED. SPILLED FUEL SHALL NOT BE 111Q PROPERTY\LINE \\\\ �A�✓ Q Q DEBT IS qy `r0 Q RELEASED INTO THE DOWNSLOPE SEDIMENT TRAP. THE CONTRACTOR SHALL F R ST q Fc o gG ENSURE THE BERM VOLUME IS 10% LARGER THAN THE MAXIMUM VOLUME OF . / SHEET bETA� STORED FUEL. - - —-- i/ /� w/ WIRE /IGN�A13�ac.) - SUPPORT SF -� �Q QJ — _ //// AMENDED LIMITS OF —� /� �4 // / �� i LOCATION STAG NG AREA WITH PORTA RKTTIES �♦ �� 9 D DID /- DISTURBANCE 17.17ac. -j' ♦ / x.oiQ DUMPSTER, AND FUELING TANK \ \ APPROVED I\ \ \ \ \ APPROVED WASH RACK 'x70MIN FLOW DIRECTION ITS OF PARROW (TYR) D.Bfi69 p5.57 / / LIMROPOSED _ � / / / --- TREE CLEARING (TYP)36 -- / —EXISTING PRESERVED � STEEP SLOPES (TYP.)— % / TMP: O�0D-ZD=020J0-_i - _ I / /33 / / - — 95 i. r% - DR NAGE ALONG DIVERSION B RMS ' TP E DIVIDE (TYP.) / i 0� % CONTRACTOR TO ENSURE POSITIVE /- �'_ OWNER/pM II SF NATIONAL M LLCM // / / / / /ID I INAG----- o \ ROVED PHI_— / - CCO STATE FARM MUTUAL/ / �- /// - PPB #1 DA=55 AUTOMOBILE— / (APP OVED BASIN DA ZONING:- COMMERCIAL OFFICE/ 43 I I RR — ACREAGE' BAC— _- �i34 DD / /l ( I w I \ _ \ SIZED\FDR 12.00 acJ — DEIRG, 447W28 • - _ /; A�� j��// � PROPOSED SAFETY FENCE / AROUND SEDIMENT BASIN ' IP� ♦ APP OVED ESC PHI � NDED DESIGN WD ----- w/WIRE //q \ SF A SUPPORT PROVED TEMPORARY CULVERT #1 � DRAINAGE .00- @ 4 00%, W (2 / SOIL DESCRIPTION (TYP.) a 'I B" ICMP,N=4 2. 00 N 4.00%, w/ (2) ES-1 / //� R �� INV IN=412.00, INV OUT�10.00 hI .i N� DEVELOPMENT3MIXED [� DID /� EXISTING GRA�DRIVETO -\\ �8RIW1U4.D W2=9.5'D=15EMIN. Y\ /' %i )'IE¢ AD I ' // l 11 / Op BE RE-ROUTED AS SHOWN o SEE SHEET 6 FOR RIPRAP / � � / � / PROTECTION w/GEOTExTILE FILTER � I I ( I AG �b98 A�LERSON OSPI i T �I I/I 43 / // / / EXISTING TREELINE (TYP.) OUTLET DESIGNPROTECTIONDETAILS R $ F DD �/ \ /v / S� I LIN� (TVPI)/ EXISTINGAw Q \o TREELINE J (TYP) / I / '/\ / PS I APT#2, 26 PHI / ST #2 DA 1 26 ac I I APP VE D GIN x / / ONNECT TO EXISTING ( € APPROVED 48" RCP STANDPIPE TO SERVE AS RISER STRUCTURE ) GRAVEL DRIVE �9CCCSSS / /� APP===ED STO ILE A \.. TO SERVE RISER STi\RE = S -CONTRALTOO EI CSTANDPIPE 7 100'STREAM -APPROVED BAFFLE SURE POSITIVEc hTORSHALL INsiA L TOEPERMAN� DRv /APPROVED SAFETY FENCE ��\\�\ ✓�^ DRAINAGE ALONG DIVERSION BERM BUFFER D T 16N CEu eMBAti NiRISE FouHCAT�N11 AROUND SEDIMENTTRAP �� APPROVED SAFETY FENCE, I • I I TTEMP�E ARV�SED MEbNT BASIN'swV AT THE TIMp FI WD / , `, AROUND SEDIMENT BASIN I C NSTRUCTIO D { x \ L�MTIG NT1 R=IG ESC PH E ER ANENTLV BLOCKED l '� WATERTIGHT DURI CE SHALL PHAS S. S}w-NVERSIAP OF B IN \ HALL LV OCDDRA R S INSPECTOR APPROV�. I I � DC' �S SH T B FOR DI NAfl DESIGN DETAILS. I I p I ,, 4f � PROPOSED BAFFLE - � FL ODPLAIN (TYP.) APPROVED STOCKPILE AREA _ � DAINAGE DIVIDE YP.) SIOLT FENCE AT ALL TIMES � \ �� -- __ _ _ _ � R III II/�- 40 CONTRACTOR TO ENSURE POSITIVE DRAINAGE ALONG DIVERSION BERMS SLIP el Loy , -57W �0 26&7�p-,5 _ �37p� LIMITS E PROPOSED TREE CLEARING (TYP.) EXISTING GRAVEL ROAD cIIPPOR7 I TS OF DAM INUNDATION ZONE �370-- �\ S APPROVED 30" _ APPROVED U CL I RIPRAP WITH FABRIC CONNECT TO EXISTING FAPPROVED HEET F R DETAILS LIMITS OF DAM INUNDATION ZONE (TYP.) o GRAVEL DRIVE - ' SWPPP EXHIBIT - POLLUTION PREVENTION PLAN - PHASE I ® COLLINS ENGINEERING DATE:6/1/20 200 GARRETT STREET SUITE K CHARLOTTESVILLE, VIRGINA 22902 OFFICE: 434-293-3729 SCALE: VI SUP OR,, NOTES: v 1. THE CONTRACTOR SHALL MINIMIZE DISCHARGE OF POLLUTANTS FROM EQUIPMENT & VEHICLE WASHING, WHEEL WASH WATER, & OTHER WASH WATER. WASH WATERS FROM THE CONSTRUCTION ENTRANCE SHALL BE TREATED VIA I EXISTING TREELINE (TYP.) THE DOWNSLOPE SEDIMENT TRAP. ' I I ' i iAV�� Q 2. THE FUELING TANK SHALL BE COMPLETELY SURROUNDED BY A 2' DEEP, 2' WIDE PROPOSED SAFETY EARTHEN BERM WITH A HEAVY MIL POLYETHYLENE LINING. THE PROPOSED BERM, SEOIMENTOTRAP I ' I \\ \\ Q Q C Q SHALL CONTAIN FUEL SHOULD IT BE SPILLED. SPILLED FUEL SHALL NOT BE 1' SEET I� S 1 A Q RELEASED INTO THE DOWNSLOPE SEDIMENT TRAP. THE CONTRACTOR SHALL s H Ell F�R 0 I ° L) 1 \ I £? Q _ ENSURE THE BERM VOLUME IS 10%LARGER THAN THE MAXIMUM VOLUME OF DETAS� STORED FUEL._ w/W�RE SIF SUPP RT AMENDED LIMITS OF \ 0 DIDDISTURBANCE = 17.17ac. / i� LOCATION OF CONTRACTOR PARKING 8 g STAGING AREA WITH PORTA POTTIES, DUMPSTER, AND FUELING TANK \ Q ' N N Sta�F°rm Aut lnsu e -Io pp _ D.6�869 p. 57 a /i � � / � i �� -/'�j /g � - l LIMITS OF PROPOSED TREE CLEARING TYP.) � /- \ / EXISTING PRESERVED STEEP SLOPES (TYP.) �y50� /� CONTRACTOR TO E URE POSITIVE 39 — j DRAINAGE ALONG DIVERSION BERMS TP AMENDED E�041 I6 PH II 1 — _— CR SB 1 DA 1 — 1 I (APPR VED DESIGN _ q �j——-O O PROPOSED SAFETY FENCE / \ AROUND SEDIMENT BASIN 4f/ ✓ V3 2sPPO URT I I � • I I I APPROVED CLASS Al OUTLET PROTECTION w/ GEGTEXTILE FILTER FABRIC UNOERLAVMENT \g2p III I IC LIND, RLAYM, D-1.5' MIN. / / SE SHEET TREELINE (TIP. 8 FOR RIPRAP OUTLET PROTECTION DESIGN EXISTING TREELINE AMEN ED S III APPROVED 48"RCPSTANDPIPE � �\\\\ /�� J I / _ PROP ISED 48I RCP ST D/ I 70SERVEAS RISER STRUCTURE ( 0 P OVED E N _- 11 blKA=1.26 :) \ ----- -- _-- AP ROyED-BAFFL�� \�/\� GE ONG DIVERSION B� FEREAM Tc0 SE �� R sRn L'EBAAN11��s MRNr�Rs RMouNIO�A1�IRN� P AS. MENDED�DES DESIGN —� - --_- _ �_ A RPP OV D SAFETY FENCE ROVE CTOR TO ENSUREPO- BERM ALL EL, LET PROTEICT16N SPILLWAY AT THE TIry1 F I WD (AMENDED / _ __ - -AROUND SEDIMENT BASIN I THE TEMP A VSEDIMENT BASINS CONSTRUCTIW.O D -6.04 C.) , ✓_ (`, S \ \ \ O ® HO ERTISLHYP�\ORT I F RsA NALDLRI B ES PERINROSIUvIPP, AINONVESENERTDSLV11IBBNALOFIFLEDS.IN ECTORAPPOV/ SIOS II\ \ , /\1 T '20 . w/ WIRE 7 SUPF � �� T e B. p 8 (plaid- gy LIMITS OF PROPOSED TREE CL ARING (�� w/ WIRE INUNDATION ZONE, APPROVED 30• . -- _ A �370 , APPROVED VDOT CL. I RIPRAP WITH \ -A RCP BARREL - LIMITS OF DAM INUNDATION ZONE (TVP.) FILTER FABRIC UNDERLAYMENT. SEE - _� APPROVED SHEET 7 FOR DETAILS. ® COLLINS ENGINEERING 200 GARRETT STREET SUITE K CHARLOTTESVILLE, VIRGINA 22902 OFFICE: 434-293-3729 SWPPP EXHIBIT - POLLUTION PREVENTION PLAN - PHASE I] DATE: 6/1 /20 SCALE: 1 "=100' 71 F / NOTES:SUP o�r� g 1. THE CONTRACTOR SHALL MINIMIZE DISCHARGE OF POLLUTANTS FROM EQUIPMENT & VEHICLE WASHING, WHEEL WASH WATER, & OTHER WASH WATER. WASH WATERS FROM THE CONSTRUCTION ENTRANCE SHALL BE TREATED VIA ExIsrINGTREELwE(TYPj THE DOWNSLOPE SEDIMENT TRAP. I fl Q �I I I o PROPOSED SAFETY P 2. THE FUELING TANK SHALL BE COMPLETELY SURROUNDED BY A 2 DEEP, 2 WIDE / II \ \ SHALEARTLICONTAIN FUEL SHOULD ITEN BERM WITH A HEAVY IBE POLYETHYLENE PILLED. SPILLEDING. THE PROPOSED F EL SHALL NOT BE BERM f f FENCE E� MENT°RnP RELEASED INTO THE DOWNSLOPE SEDIMENT TRAP. THE CONTRACTOR SHALLsHEE T ET F IR ENSURE STORED FUTHE BERM VOLUME IS 10% LARGER THAN THE MAXIMUM VOLUME OF /� DETAILS \ / WIRE AMENDED LIMITS OF DISTURBANCE = 17.173c. LOCATION OF CONTRACTOR PARKING & I \ \\ 9 - --- STAGING AREA WITH PORTA POTTIES, FUELING - - DUMPST , AND F NG TANK > � U LI Q ER �r I r � � S4 + Lt pp osur . _� — OF PROPOSED N St.to—Form tual/- 6 ��oo. ppf�55pp .f61 r D.B. 57� ._�-. -- ,"" ._ .9 /�—ZL�IMITS — \ — _ TREE CLEARING P — I EXISTING PRESERVED- --�/ STEEP SLOPES (TYP.)— \ — _f/CONTRACTOR E POSITIVE 9 CO N TOR TO ENSURE ' L / _ D ONG E AMENDED ESCP-I � - - SIB #1 DA 7 84 ac. DID f �/� (A PROVED DESI — � PDA=120D ac.) \ GN PROPOSED SAFETY FENCE AROUND SEDIMENT BASIN 1 W WIRE SF P i r AMENDED ES. i I SB #2 DA B.04 / (AMENDED DESIGN SEE SHEET BFOR RIPRAP OP V \ v o �.f EXISTING TREELINE (TYPJ f ff r r _ OUTLET PROTECTION DESIGN &DETAILS I �t EXI4TINO TREELINE y.; / y STANDPIPE `. I TO SERV BRIBER STRUCTURE ® PROPOSED 48' RCP STANDPIPE � � � c; / _ � t � � -V B !ER TO SERVE AS RISER STRUCTURE DRY ""� A\ R ,�, ."., CONTRACTOR TO ENSURE POS TIVE �TRCONTRACTOR SHALL INSTALL THE PERM NI'�� \ f E APPRGV D BAFFLE / / -_DETENTION CELL EMBANKMENT, RISER FOUIJDAjYQN \ \ --. .. APPROVED $AFETY'ENCE, DRAINAGEALONG.DIVERSION"8E_ I II \ f BARREL OUTLET PROTECTION BI SPILLWAY AT THE TIM F I \ \, + O� AROUND SEDIMENTBASIN TEMPORARY SEDIMENT BASINS CONSTRUCTION \ \ OO HANOFB LL LV OCCUR AFTER ESI SNSPECTOR A"ROMFINI `:S SHEET 8 FOR ADDIi A DESIaN D TAILS. I V .PROPOSED BAFFLE I \ 3a / TMP 78 f 20M1 \ \ . \\� / SUP WIRE \ i "/ _— \ y_, F Worrel L nd Deve lo rfi t D. 2544�PP 2 F50 SPPI �L _�� / _ _ f� _ // \� �3 0—/ B-'2607 ppp. 72-573�lPT D.B. 1673 P- ``�� 8 �PIoC}- LIMITS OF PROPOSED TREE CLEARING (TYP.) +46 SUPPORT f�� • r "�� '� �/ �� f\ __ LIMITS F INUNDATION ZONE, DAM_ -- f APPROVED 30 -, APPROVED DV OT CL. I RIPRAP WITH�370 _ -- RCP BARREL — FILTER FABRIC UNDERLAYMENT SEE - 7 APPROVED SHEET 7 FOR DETAILS LIMITS OF DAM INUNDATION ZONE (TYP.) i ® COLLINS ENGINEERING 200 GARRETT STREET SUITE K CHARLOTTESVILLE, VIRGINA 22902 OFFICE: 434-293-3729 SWPPP EXHIBIT — POLLUTION PREVENTION PLAN — PHASE III DATE: 6/1 /20 SCALE: 1 "=100' Section 7 - Discharges to impaired waters, surface waters within an applicable TMDL wasteload allocation, and exceptional waters Due to impaired waters, comply with 9VAC25-880-70 Part 1 (13)(4), Contractor shall provide clear direction that: b. Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site. c. Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events. d. The applicable SWPPP inspection requirements specified in Part II F 2 shall be amended as follows: 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. Fact Sheets for Impaired (Category 4 or S) Waters in 2018 James River Basin Cause Group Code: H28R-03-BAC Meadow Creek Cause Location: Meadow Creek from where it becomes a perennial stream downstream to its confluence with the Rivanna River. (Start Mile: 4.98 End Mile: 0.00 Total Impaired Size: 4.98 Miles) City / County: Albemarle Co. Charlottesville City Use(s): Recreation Cause(s) / VA Category: Escherichia coli / 4A Fecal Coliform / 4A This segment is impaired due to exceedences of the e-coli bacteria WQS at station: 2-MWC000.60 (10 exceedences of 23 samples for e-coli). Initial Listing Date: 2002. This segment is included in the EPA approved Meadow Creek bacteria TMDL. Federal TMDL ID # 35779. Cause Assessment Unit / Water Name / Location Desc. Category Cause Name VAV-H28R_MWC01A00 / Meadow Creek / Meadow Creek from 4A Escherichia coli where it becomes a perennial stream downstream to its confluence with the Rivanna River. Meadow Creek Recreation Escherichia coli - Total Impaired Size by Water Type: Cause Assessment Unit / Water Name / Location Desc. Category Cause Name VAV-H28R_MWC01A00 / Meadow Creek / Meadow Creek from 4A Fecal Coliform where it becomes a perennial stream downstream to its confluence with the Rivanna River. Meadow Creek Recreation Sources: Municipal (Urbanized High Density Area) Fecal Coliform - Total Impaired Size by Water Type: Non -Point Source Wildlife Other than Waterfowl Cycle TMDL First Dev. Water Listed Priority Size 2008 L 4.98 Estuary Reservoir River (Sq. Miles) (Acres) (Miles) 4.98 Cycle TMDL First Dev. Water Listed Priority Size 2002 L 4.98 Estuary Reservoir River (Sq. Miles) (Acres) (Miles) 4.98 Draft 2018 Appendix 5 - 991 Fact Sheets for Impaired (Category 4 or S) Waters in 2018 James River Basin Cause Group Code: H28R-05-BEN Meadow Creek Cause Location: Meadow Creek from where it becomes a perennial stream downstream to its confluence with Moores Creek. (Start Mile: 4.98 End Mile: 0.00 Total Impaired Size: 4.98 Miles) City / County: Albemarle Co. Charlottesville City Use(s): Aquatic Life Cause(s) / VA Category: Benthic-Macroinvertebrate Bioassessments / 5A This segment is impaired due to exceedences of the General Standard for Benthics at station: 2-MWC000.60 (Impaired for VSCI); 2-MWC-MWC03-RCA (Impaired for VSCI) 2-MWC-MWC07-RCA (Impaired for VSCI); 2-MWC-MWC05-RCA (Impaired for VSCI); 2-MWC-MWC06-RCA (Impaired for VSCI); 2-MWC-MWC08-RCA (Impaired for VSCI); 2-MWC-MWC09-RCA (Impaired for VSCI); 2-MWC-MWC10-RCA Impaired for VSCI). Initial Listing Date: 2006. Assessment Unit / Water Name / Location Desc. VAV-H28R_MWC01A00 / Meadow Creek / Meadow Creek from where it becomes a perennial stream downstream to its confluence with the Rivanna River. Meadow Creek Aquatic Life Cycle TMDL Cause First Dev. Category Cause Name Listed Priority 5A Benthic-Macroinvertebrate 2006 L Bioassessments Estuary Reservoir (Sq. Miles) (Acres) Be nth ic-Macroi nvertebrate Bioassessments - Total Impaired Size by Water Type: Sources: Non -Point Source Water Size 4.98 River (Miles) 4.98 Draft 2018 Appendix 5 - 993 Fact Sheets for Impaired (Category 4 or S) Waters in 2018 James River Basin Cause Group Code: H29R-04-BEN Carroll Creek Cause Location: Carroll Creek and tributaries from the headwaters downstream to its confluence with the Rivanna River. (Start Mile: 18.46 End Mile: 0.00 Total Impaired Size: 18.46 Miles) City / County: Albemarle Co. Use(s): Aquatic Life Cause(s) / VA Category: Benthic-Macroinvertebrate Bioassessments / 5A This segment is impaired due to exceedences of the General Standard for Benthics at stations: 2-CRR000.27 (Impaired for VSCI) and 2-CRR-CRL01-RCA (Impaired for VSCI). Initial Listing Date: 2010. Cycle TMDL Cause First Dev. Water Assessment Unit / Water Name / Location Desc. Category Cause Name Listed Priority Size VAV-H29R_CAR01A06 / Carroll Creek / Carroll Creek and 5A Benthic-Macroinvertebrate 2010 L 18.45 tributaries from the headwaters downstream to its confluence with the Bioassessments Rivanna River. Carroll Creek Estuary Reservoir River Aquatic Life (Sq. Miles) (Acres) (Miles) Be nth ic-Macroi nvertebrate Bioassessments - Total Impaired Size by Water Type: 18.45 Sources: Non -Point Source Draft 2018 Appendix 5 - 1007 Section 8 - Qualified Personnel The following personnel are responsible for inspections: • I ► e PRESIDIO PANTOPS, LLC PROJECT MANAGER: SCOTT COLLINS, PE —COLLINS ENGINEERING 434.293.3719 Scott@collins-engineering.com DEVELOPER-. ALAN TAYLOR — RIVERBEND DEVELOPMENT 434.245.4970 alan@riverbenddev.com Section 9 - Signed Certification 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." Operator Name ALAN TAYLOR Company: PRESIDIO PANTOPS, LLC Title: OWNER Signature: Date: 4/1 Section 10 - Delegation of Authority Delegation of Authority (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: Section 11- General Permit copy 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 PART DISCHARGE AUTHORIZATION AND SPECIAL CONDITIONS A. Coverage under this general permit. 1. During the period beginning with the date of coverage under this general permit and lasting until the general permit's expiration date, the operator is authorized to discharge stormwater from construction activities. 2. This general permit also authorizes stormwater discharges from support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) located on -site or off -site provided that: a. The support activity is directly related to the construction activity that is required to have general permit coverage for discharges of stormwater from construction activities; b. The support activity is not a commercial operation, nor does it serve multiple unrelated construction activities by different operators; c. The support activity does not operate beyond the completion of the last construction activity it supports; d. The support activity is identified in the registration statement at the time of general permit coverage; e. Appropriate control measures are identified in a stormwater pollution prevention plan and implemented to address the discharges from the support activity areas; and f. All applicable state, federal, and local approvals are obtained for the support activity. B. Limitations on coverage. 1. Post -construction discharges. This general permit does not authorize stormwater discharges that originate from the site after construction activities have been completed and the site, including any support activity sites covered under the general permit registration, has undergone final stabilization. Post -construction industrial stormwater discharges may need to be covered by a separate VPDES permit. 2. Discharges mixed with nonstormwater. This general permit does not authorize discharges that are mixed with sources of nonstormwater, other than those discharges that are identified in Part I E (Authorized nonstormwater discharges) and are in compliance with this general permit. 3. Discharges covered by another state permit. This general permit does not authorize discharges of stormwater from construction activities that have been covered under an individual permit or required to obtain coverage under an alternative general permit. Page 3 of 26 4. Impaired waters and total maximum daily load (TMDL) limitation. a. 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. b. 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. 5. 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. 2. 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. 2. If it is determined by the department that the operator's discharges are causing, have reasonable potential to cause, or are contributing to an excursion above any applicable water quality standard, the department, in consultation with the VSMP authority, may take appropriate enforcement action and require the operator to: a. Modify or implement additional control measures in accordance with Part II 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 II I K. PART II 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. 2. 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). 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. 4. Pollution prevention plan. A pollution prevention plan that addresses potential pollutant - generating activities that may reasonably be expected to affect the quality of stormwater discharges from the construction activity, including any support activity. The pollution prevention plan shall: a. Identify the potential pollutant -generating activities and the pollutant that is expected to be exposed to stormwater; 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. 5. 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. 6. 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 TMDI-s, 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. 2. 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 2. The operator shall make the SWPPP and all amendments, modifications, and updates available upon request to the department, the VSMP authority, the EPA, the VESCP authority, local government officials, or the operator of a municipal separate storm sewer system receiving discharges from the construction activity. If an on -site location is unavailable to store the SWPPP when no personnel are present, notice of the SWPPP's location shall be posted near the main entrance of the construction site. 3. The operator shall make the SWPPP available for public review in an electronic format or in hard copy. Information for public access to the SWPPP shall be posted and maintained in accordance with Part II 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. 2. 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 II 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; 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. 6. 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. 2. The operator may be required to remove accumulated sediment deposits located outside of the construction activity covered by this general permit as soon as practicable in order to minimize environmental impacts. The operator shall notify the VSMP authority and the department as well as obtain all applicable federal, state, and local authorizations, approvals, and permits prior to the removal of sediments accumulated in surface waters including wetlands. 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. Samples and measurements taken for the purpose of monitoring shall be representative of the monitoring activity. 2. Monitoring shall be conducted according to procedures approved under 40 CFR Part 136 or alternative methods approved by the U.S. Environmental Protection Agency, unless other procedures have been specified in this general permit. Analyses performed according to test procedures approved under 40 CFR Part 136 shall be performed by an environmental laboratory certified under regulations adopted by the Department of General Services (1 VAC30-45 or 1 VAC30-46). 3. The operator shall periodically calibrate and perform maintenance procedures on all monitoring and analytical instrumentation at intervals that will ensure accuracy of measurements. B. Records. 1. Monitoring records and reports shall include: a. The date, exact place, and time of sampling or measurements; b. The 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. 3. If the operator monitors any pollutant specifically addressed by this general permit more frequently than required by this general permit using test procedures approved under 40 CFR Part 136 or using other test procedures approved by the U.S. Environmental Protection Agency or using procedures specified in this general permit, the results of this monitoring shall be included in the calculation and reporting of the data submitted in the DMR or reporting form specified by the department. 4. Calculations for all limitations which require averaging of measurements shall utilize an arithmetic mean unless otherwise specified in this general permit. D. Duty to provide information. The operator shall furnish, within a reasonable time, any information which the board may request to determine whether cause exists for 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 8. Any steps planned or taken to reduce, eliminate and prevent a recurrence of the present discharge or any future discharges not authorized by this general permit. Discharges reportable to the department and the VSMP authority under the immediate reporting requirements of other regulations are exempted from this requirement. H. Reports of unusual or extraordinary discharges. If any unusual or extraordinary discharge including a "bypass" or "upset," as defined 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. 1. An oral report to the department and the VSMP authority shall be provided within 24 hours from the time the operator becomes aware of the circumstances. The following shall be included as information that shall be reported within 24 hours under this subdivision: a. Any unanticipated bypass; and b. Any upset that causes a discharge to surface waters. 2. A written report shall be submitted within five days and shall contain: a. A description of the noncompliance and its cause; 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 II I 1 1 or 2 in writing as part of the SWPPP. The reports shall contain the information listed in Part 111 12. NOTE: The reports required in Part III G, H and I shall be made to the department and the VSMP authority. Reports may be made by telephone, email, or by fax. For reports outside normal working hours, leaving a recorded message shall fulfill the immediate reporting requirement. For emergencies, the Virginia Department of Emergency Management maintains a 24-hour telephone service at 1-800-468-8892. 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: 5. "1 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 I I I 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. 2. As an alternative to transfers under Part III Y 1, this state permit may be automatically transferred to a new operator if: a. The current operator notifies the department at least 30 days in advance of the proposed transfer of the title to the facility or property; b. The notice includes a written agreement between the existing and new operators containing a specific date for transfer of state permit responsibility, coverage, and liability between them; and c. The department does not notify the existing operator and the proposed new operator of its intent to modify or revoke and reissue the state permit. If this notice is not received, the transfer is effective on the date specified in the agreement mentioned in Part III Y 2 b. 3. For ongoing construction activity involving a change of operator, the new operator shall accept and maintain the existing SWPPP, or prepare and implement a new SWPPP prior to taking over operations at the site. Z. Severability. The provisions of this general permit are severable, and if any provision of this general permit or the application of any provision of this state permit to any circumstance, is held invalid, the application of such provision to other circumstances and the remainder of this general permit shall not be affected thereby. Section 12 - Inspection Logs SWPPP INSPECTOR REPORT: Inspector Name: Time of Inspection: Last Rain Event: Rainfall Amount: Summary of Inspection (See back of this sheet for checklist): • Location of Prohibited Discharges: • E&S or Pollution Prevent Measures that require maintenance: • Failed Control Measures (E&S or Pollution Prevention): • Locations where the approved plans were not implemented properly: • Corrective Actions Required: • Outstanding Items if present from last inspection: Inspector Signature Operator Signature Date Date "If this report does not identify any incidents of non-compliance, I certify that the construction activity is in compliance with the SWPPP and Construction General Permit." Inspections shall be completed at least once every four business days; or at least once every 5 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day. Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to exceptional water. INSPECTION REQUIREMENTS: • Inspect proper installation, maintenance needs, and effectiveness of: Perimeter controls (silt fence, tree protection, etc.) Soil stockpiles and borrow areas Completed earthen structures (dams, dikes, ditches, diversions, etc.) Cut and fill slopes Measures installed to control sediment discharge from stormwater (sediment basins, traps, or barriers, etc.) Measures installed to convey concentrated runoff (channels, flumes, slope drain structures, storm inlets, construction vehicle access routes, etc.) • Areas at final grade or to remain dormant for more than 14 days: Initiate stabilization activities Complete stabilization activities within 7 days of stopping work • Evidence that ESCP has not been properly implemented: 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; Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; Sediment deposition on any property (including public and private streets) outside of the construction activity covered by this general permit; Required stabilization has not been initiated or completed on portions of the site; 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; 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 Land disturbance outside of the approved area to be disturbed • Pollutant generating activities from Pollution Prevention Plan: Proper implementation, maintenance, and effectiveness of the procedures and practices • Describe discharges at time of inspection: • Record land -disturbing activities outside approved ESCP: • Identify any pollutant generating activity or evidence of discharge not identified in the pollution prevention plan: Section 13 — Grading and Stabilization Log Grading and Stabilization Activities Log Project Name: SWPPP Contact: Date Description of Grading Activity Date Grading Date When Description of Stabilization Measure and Grading Activity Ceased Stabilization Location Activity (Indicate Temporary Measures are Initiated or Permanent) Initiated Signature of Contractor/Subcontractor or "Duly Authorized Representative": Printed Name and Affiliation: Date: Date Description of Grading Activity Date Grading Date When Description of Stabilization Measure and Grading Activity Ceased Stabilization Location Activity (Indicate Temporary Measures are Initiated or Permanent) Initiated Signature of Contractor/Subcontractor or "Duly Authorized Representative": Printed Name and Affiliation: Date: Date Description of Grading Activity Date Grading Activity Date When Description of Stabilization Measure and Location Grading Ceased (Indicate Stabilization Activity Temporary or Measures are Initiated Permanent) Initiated Signature of Contractor/Subcontractor or "Duly Authorized Representative": Printed Name and Affiliation: Date: Date Description of Grading Activity Date Grading Activity Date When Description of Stabilization Measure and Location Grading Ceased (Indicate Stabilization Activity Temporary or Measures are Initiated Permanent) Initiated Signature of Contractor/Subcontractor or "Duly Authorized Representative": Printed Name and Affiliation: Date: Date Description of Grading Activity Date Grading Activity Date When Description of Stabilization Measure and Location Grading Ceased (Indicate Stabilization Activity Temporary or Measures are Initiated Permanent) Initiated Signature of Contractor/Subcontractor or "Duly Authorized Representative": Printed Name and Affiliation: Date: Section 14 — Amendment Log Amendment Log Project Name: SWPPP Contact: Amendment No. Description of the Amendment Date of Amendment Amendment Prepared by [Name(s) and Title]