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HomeMy WebLinkAboutWPO201800023 VSMP - SWPPP 2018-08-24o LL COUNTY OF ALBEMARLE $ Department of Community Development u L 401 McIntire Road, North Wing Charlottesville, Virginia 22902-4596 Tel. (434) 296-5832 9 Fax (434) 972-4126 �rR�1�xF Stormwater Pollution Prevention Plan (SWPPP) For Construction Activities At: Project Name: Keswick Hall Central Energy Plant Demolition and Renovation WP0201800023 701 Club Drive Keswick, Virginia 22947 Prepared by: Timmons Group 608 Preston Avenue, Suite 200 Charlottesville, VA 22903 434.295.8317 Prepared for: Historic Hotels of Albemarle LLC 701 Club Drive Keswick, VA 22947 Contact: Mr. John Trevenen 434.923.4300 SWPPP Preparation Date: August 21, 2018 (This document is to be made publicly available according to 9VAC25-880-70, Part II, section D) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County CONTENTS: (from Albemarle County Code Sec. 17-405) 1. Registration statement 2. Notice of general permit coverage 3. Nature of activity 4. Erosion and Sediment Control Plan. 5. Stormwater Management Plan 6. Pollution Prevention Plan. 7. Discharges to impaired waters, surface waters within an applicable TMDL wasteload allocation, and exceptional waters. 8. Qualified personnel 9. Signed Certification 10. Delegation of authority. 11. General permit copy 12. Inspection logs Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 1. Registration statement (Provide a signed completed copy of the DEQ registration statement) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Registration Statement General VPDES Permit for Discharges of Stormwater from Construction Activities (VAR10) (Please Type or Print All Information) 1. Construction Activity Operator: (General permit coverage will be issued to this operator The Certification in Item #12 must be signed by the appropriate person associated with this operator.) Name: W.M. Jordan Companv Contact:— Eddie Hidalao Mauna Address: 708 Bainbrida_e Street city:_ Richmond state VA Zin. 23224 Phone:. 804-233-6921 Email address (if available): ehidalgo@wm jordan.com Indicate if DEQ may transm t general permit correspondence electronicE lly: Yes ® No ❑ 2. Existing General Permit Registration Number (for renewals only): 3. Name and Location of the Construction Activity: Name: Keswick Hall Central Energy Plant Demolition and Renovation Address (if available): 701 Club Drive city: Keswick state: Virginia zip: 22947 County (if not located within a City): Albemarle Latitude (decimal degrees): 38.017164 Longitude (decimal degrees):-78.366629 Name and Location of all Off -site Support Activities to be covered under the general permit: Name: Address (if available): City: State: Zip: County (if not located within a City): Latitude (decimal degrees): Longitude (decimal degrees): 4. Status of the Construction Activity (check only one): Federal ❑ State ❑ Public ❑ Private 5. Nature of the Construction Activity (e.g., commercial, industrial, residential, agricultural, oil and gas, etc.): Commercial 6. Name of the Receiving Water(s) and Hydrologic Unit Code (HUC): Name: Rivanna Name: Hoc: 02080204 Huc: 7. If the discharge is through a Municipal Separate Storm Sewer System (MS4), the name of the MS4 operator: 8. Estimated Project Start and Completion Date: Start Date (mmMdlyyyy):10/0112018 Completion Date (mm/dd/yyyy): 10/01/2019 9. Total Land Area of Development (to the nearest one -hundredth acre): 168.58 AC Estimated Area to be Disturbed (to the nearest one -hundredth acre): 2.85 AC 10. Is the area to be disturbed part of a larger common plan of development or sale? Yes ❑ No 11. A stormwater pollution prevention plan (SWPPP) must be prepared in accordance with the requirements of the General VPDES Permit for Discharges of Stormwater from Construction Activities prior to submitting this Registration Statement. By signing this Registration Statement the operator is certifying that the SWPPP has been prepared. 12. Certification: "I certify under penalty of law that I have read and understand this Registration Statement and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system or those persons directly responsible for gathering the information, the information submitted is to the best of my knowledge and belief true, accurate, and complete_ I am aware that there are significant penalties for submitting false information including the possibility of fine and imprisonment for knowing violations." Printed Name: Title: Title: Signature: Date:_ ! _ (Please sign in INK. This tion must be signed by the appropriate person associated with t4e operator identified in Item ##1.) 07/2014 Page 1 of 1 Section 2. Notice of general permit coverage (This notice is to be posted near the main entrance according to 9VAC25-880-70, Part II, section C.) (Provide a copy of the DEQ coverage letter when obtained) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 3. Nature of activity (Provide a detailed narrative of the construction activities. Include or reference a construction schedule and sequence. Include any phasing.) This project includes the demolition of existing structures, construction of a central energy plant, and associated utilities. Limits of clearing and grading area is 2.85 acres. The northern property line is bound by Keswick Rd and Keswick Hunt Club. The eastern property line is bound by the Keswick golf course. The southern property line is bound by the Keswick golf course and single family residential homes. The western property line is bound by single family residential homes. All construction shall take place in accordance with the Erosion and Sediment Control Sequence of Installation on plan sheet C3.0. Estimated construction dates are as indicated on the Registration Statement. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 4. Erosion and Sediment Control Plan. (Provide a reduced, 11x17 copy of the latest Erosion and Sediment Control Plan. Do not reference only.) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County EROSION III SEDIMENT CONTROL NARRATIVE PROJECT DESCRIPTION MINIMUM STANDARDS: THIS PROJECT INCLUDES THE DEMOLITION OF EXISTING STRUCTURES, CONSTRUCTION OF A CENTRAL ENERGY PLANT, AND ASSOCIATED UTILITIES. LIMITS OF CLEARING AND GRADING AREA OF 2.86 ACRES. AN EROSION AND SEDIMENT CONTROL PROGRAM ADOPTED BY DISTRICT OR LOCALITY MUST BE CONSISTENT WITH THE FOLLOWING CRITERIA, TECHNIQUES AND METHODS: ADJACENT PROPERTY MS-1. PERM AN ENT ORTEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS THE NORTHERN PROPERTY LINE IS BOUND BY KESWICK RD AND KESWICK HUNT CLUB. THE EASTERN PROPERTY LINE IS BOUND BY THE KESWICK GOLF COURSE. THE SOUTHERN PROPERTY LINE IS BOUND BY THE REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS. PERMANENT STABILIZATION SHALL BE KESWICK GOLF COURSE AND SINGLE FAMILY RESIDENTIAL HOMES. THE WESTERN PROPERTY LINE IS BOUND AP PLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. BY SINGLE FAMILY RESIDENTIAL HOMES. MS-2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH EXISTING SITE CONOITIONS SEDIMENT TRAPPING MEASURES. THE APPLICANT 15 RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE. THE SITE IS CURRENTLY THE LOCATION OF THE KESWICK HALL AND GOLF CLUB. MS-3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDER ESTABLISHED UNTIL GROUND COVER IS ACHIEVED THAT IS UNIFORM, MATURE OFF -SITE AREAS ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. NO OFF -SITE AREAS WILL BE IMPACTED. MS-4. SEDIMENT TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND ALL CRITICAL SLOPES ARE SHOWN ON PLAN SHEETS C2.1 & C2.2 ALL CR LEROSIOPESAREAS ARE DISTURBANCE TAKES PLACE. MS-5. MEASURES SHALL 8E APPLIED TO EARTHEN SIRUCNRES SUCH AS DAMS DIKES AND DIVERSIONS IMMEDIATELY AFTER • INSTALLATION. INSTALLATION. EROSION AND SEDIMENT MS-6. SEDIMENT TRAPS SHALL BASED UPON TOTAL DRAINAGE TO BE ED CONSTRUCTEDSEDIMENT NDICONTROL LVEGETAT UNLESS OSSHALL E INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL E CAPACITDESIGNEY A. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA AND THE TRAP OF A TRAP HAW 134CU PERARE OF AREA AND THE ONNID SEDIMENT CON AND ING EROSION PRASPECIFICATIONS OF M E URENTED AND ADITION OF THE VIRGINIA SPECIFICATIONS OF THE CUSTANDADD THE VIRGINIA EROSION AND SEDIMENT COMBOS IS. SHALLONLY COMROL DRAINAGEBE AR LESS DESIGNED AND MS-]. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNERTHATT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND CONSTEE RUCTED HANDBOOK. THE MINIMUM STANDARDS OFT E VESCH SHALL BE ADHERED TO UNLESS OTHERWISE WANED TO BE ERODING EXCESSIVELY WITHIN ONE YEAR PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE AUTHORITIES OR APPROVED BY VARIANCE BY LOCAL AUTHORITIES HAVING JURISDICTION. O STABILIZING MEASURES UNTIL THE PROBLEM CORRECTED. .TOR RUNOFF CONSIDERATIONS MS-8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR W PERMANENT CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE. TENTIO FACILITIES WILL BE USED TO TREAT FOR QUALITY. BIORETENTION FACILITIES MS-9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL PROVIDED. AND UNDERGROUND STORAGE PIPES WILL BE USED TO CONTROL OFFSITE RUNOFF. AND UNDERGROUND TO CONTROL MS-10. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE OUTING CONSTRUCTION EDOR SHALL BE PROTECTED SO THAT REMOSEDIMENTNT. WATER S CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED REMOVE SEDIMENT. RUNOFF CONSIDERATIONS A MS-11. BEFORE NEWLY CONSTRUCTED R CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL MAINTAINED IN ACCORDANCE WITH VESCH AND AW EROSION D TEMPORARY PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE Q O THE CONSTRUCTION SEQUENCE, INCLUDING THE INSPECTION OF ALL MEASURES AFTER ALL RAIN EVENTS. CHANNEL RECEIVING CHANNEL. W SHALL BETAKEN MINIMIZE CONTROL MS-12. WHEEWORK IN WORK N A LIVE WATERCOURSE IS PERFORMED, PTO PRACTICES: 1. TEMPORARY CONSTRUCTION ENTRANCE - A TEMPORARY CONSTRUCTION ENTRANCE SHALL BE 1. TEMPORARY THE GREATEST SI CONSTRUCTION. SEDIMENT TRANS PORTANDSTABILIZE THE WORK AREA TOTHEGREATESTFFERD POSSIBLEDURING CONSTRUCTION.RTERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE N T PROVIDED AT THE LOCATION INDICATED ON THE PURPO JT IS IMPERATIVETHATAMOUN MEASURE BE IF ARMORED BY COVER MATERIALS. MAINTAINED THROUGHOUT ITS PURPOSE IS TO REDUCE THE AMOUNT OF MUD WHENSTRUCTAURES MS-13. WHEN CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A UST BE CROSSED WATERCOURSE MUST TRANSPORTED ONTO PAVED PUBLIC ROADS BY VEHICLES OR RUNOFF. R BLIRVOADS RLIVE O ERODIBLE MATERIAL SHALL BE PROVIDED. TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NO IMMOTOR 2. SILT FENCE BARRIER - 3.05 SILT FENCE SEDIMENT BARRIERS SHAL L BE INSTALLED DOWNSLDPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT -LADEN RUNOFF FROM SHEET FLOW AS INDICATED. PERTAINING MS-14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. ITS PURPOSE IS TO INTERCEPT SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS AND PREVENT SEDIMENT FROM LEAVING THE SITE. MS-15. THE BED AND BANKS OFA WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. MS-16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER 3. STORM DRAIN INLET PROTECTION - 3.07 STONE FILTERS SHALL BE PLACED AT THE INLET OF ALL APPLICABLE CRITERIA: DRAINAGE STRUCTURES AS INDICATED ON PLANS. ITS PURPOSE IS TO PREVENT SEDIMENT FROM A. NO MORE THAN 500 UNEAR FEET OF TRENCH MAYBE OPENED ATONE TIME. ENTERING THE STORM DRAINAGE SYSTEM PRIOR TO PERMANENT STABILIZATION. B. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. 4. DIVERSION DIKE -3.09 A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A C. EFFWENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, SLOPING DISTURBED AREA WHICH DIVERTS OFF -SITE RUNOFF AWAY FROM UNPROTECTED SLOPES AND OR BOTH AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF SUE PROPERTY. TO ASTABILIZED OUEFFECDIVERTSEDIMEM -LADEN RUNOFF TO TRAPPING STRUCTURE. MAXIMUMM EFFECTIVE LIFE IS 18 MONTHS. W D. MATERIAL FORBACKFINGTRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. 5. BED I NT 3ATEMPO CONTROLLED TOOUGH OR DAMBEDA E. RESTAA ACCOMPLISHED IN WITH THESE REGULATIONS. N SEDIMENT -LADEN RUNOFF FROM DISTURBED DETAIN SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS IN'WET'ANO'OR1^ STORAGE LONG ENOUGH AREITHAS IN STORAGE LONG ENE COMPILEDANCE REG UBE F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. LE SAFETY FORTH MAJORITY OF SEDIMENT TO SETTLE OUT. MS-1]. WHERE CONSTRUCTIONVEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADETOMINIMIZETHE fi. MAISTIR TENANCE END TRAP-INSPEN IT IS -I UUR ONTO THE PTHORSURFACE. ED OF ISTRANSPOTTEDONTOAPAVED OR ME VEHIROAD CURAWY BOUND DAMAGED DURING CONSTRLY UTOENSURE DURING CONSTRUCTION ACTIVITIES.HAS THE TRIP BECHE KEDAS NOTFTER EVEN RAINFALL ONCE THE SEDIMENT HAS REACHED THE HE PSHALLBNKAJTL WENTAND PUBLICTRANSPORTOAD SURFACE,RFACEHALL THE SURFACE, THE ROAD SURFACE OREACH REMOVED FHOM THE ENG AND TRANSPORTEDROUGHLY AT A EDIMER CONTROL SEDIMEM SHALL BE REMOVE FROM OADS YSHOVELINGTER OR SWEEPING AND DISPOSASTREET DESIG VIED PROPERLY OF. ELITTSREVERYJEM VIES DUST ALLOWEDR. THIS PROVISIONS SHALL TO IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL WASHING SHALL BEOTS ALLOWED ONLY ED IN THIS MANNER. CONTROL NTROL IS TO BE U THROUGH THE SUE IN AREA CONTROL ]. DUST CE AND AIR MO EMENT. MROL IS TO BE USED THROUGH THE SITE IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT. URGER UND-DT ACTIVITIES. AS URGER UND-0 MEASURES MS-18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION AWTEMDEVE PMENT LOTS AS LL AND OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS O S OFT BY THE LOCAL PROGRAMAUTHORITY. VEGETATIVE PRACTICES: I ION EM E DISPOSITION TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE 1. TOPSOIL(TEMPORARY STOCKPILE) -3.30 TOPSOIL SHALL BE STRIPPED FROM AREAS TO BE GRADED PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. AND STOCKPILED FOR LATER SPREADING. STOCKPILL LOCATIONS SHALL BE LOCATED ONSITE AND MS-19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION SHALL BE STABILIZED WITH TEMPORARY SILT FENCE AND VEGETATION. AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE STANDARDS AND CRITERIA LISTED IN SECTION 19 OF VIRGINIA 2. TEMPORARY SEEDING - 3.31 ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR MORE THAN 30 DAYS SHALL BE SEEDED WITH FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING ADMINISTRATIVE CODE WAC25-840-40 MINIMUM STANDARDS. GRADING OF THOSE AREAS. SELECTION OF THE SEED MIXTURE SHALL DEPEND ON THE TIME OF YEAR IT IS APPLIED. 3. PERMANENT SEEDING - 3.32 FOLLOWING GRADING ACTIVITIES, ESTABLISH PERENNIAL VEGETATIVE SOILS INFORMATION: COVER BY PLANTING SEED TO REDUCE EROSION, STABILIZE DISTURBED AREAS, AND ENHANCE NATURAL BEAUrv. 4. SOIL STABILIZATION BLANKETS & MATTING - A PROTECTIVE COVERING BLANKET OR SOIL 46C - LIGNUM SILT LOAM 2 TO ] PERCENT SLOPES. 40 TO 60 INCHES TO BEDROCK, MODERATELY WELL DRAINED. STABILIZATION MAT SHALL BE INSTALLED ON PREPARED PLANTING AREAS OF CHANNELS TO PROTECT PRE CPARALFF-IOIL GROUP: HYDROLOGIC SOIL GROUP: D AND PROMOTE VEGETATION ESTABLISHMENT AND REINFORCE ESTABLISHED TURF. MANAGEMENT STRATEGIES SIB - MANTES CHANNERV SILT LOAM, 2 TO ] PERCENT SLOPES. IS TO SOMEWHAT EXCESSIVELY S TOYDRO 1. PROVIDE PING MEASURES AS A FIRST STEP IN GRADING, SEED AND MULCH DRAINED. DRAINED. HYDROLOGIC SOIL GROUP: D HYDROLOGIC OIL GROUP: IMMEDIATELY FOLLOWING INSTALLATION. EI-Y FOLLOWING 2. PROVIDE TEMPORARY ORUUGOROTHERRAINAGE FROMIMMEDIATELY CONVERACESI 3. ISOLATE TRENCHING FOR UTILITIES AND DRAINAGE FROM DOWNSTREAM CONVEYANCES IN ORDER TO SIC - MANTES CHANNERV SILT LOAM, ] TO SS PERCENT SLOPES. 10 MINIMIZE PERIMETER CONTROLS. TO 20DNED.INCHESYDRO BEDROCK, SOMEWHAT EXCESSIVELY 4. ALL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE MAINTAINED UNTIL THEY ARE NO LONGER REQUIRED TO COMPLY WITH THE CONTRACT DOCUMENTS OR STATE LAW. DRAINED. HYDROLOGIC SOIL GROUP: D HYDROLOGIC S- MANTESCHANNERVSITT LOAM, 15 TO 25 PERCENT SLOPES. PERMANENT STABILIZATION 10 T02O INCHESTO SOMEWHAT EXCESSIVELY ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH PERMANENT SEEDING LOGIC SICBEDCOCK, DRAINED. HYDROLOGIC SOIL GROUP: D E IATELVED IMMEDIATELY FOLLOWING FINISHED GRADING. SEEDING SHALL BE IN ACCORDANCE WITH STD. &SPEC. PERMANENT SEEDING. SEED TYPE SHALL BE AS SPECIFIED FOR "MINIMUM CARE LAWNS" AND - SILT LOAM, 2 TO ] PERCENT SLOPES. 40 TO "GENERAL SLOPES" IN THE HANDBOOK FOR SLOPES LESS THAN 3:1. FOR SLOPES GREATER THAN 3:1, SEED "GENERALS INCHES TO PARALITHIC BEDROCK, WELL DRAINED. HYDROLOGIC INC S TO L TYPE SHALL BE AS SPECIFIED FOR "LOW MAINTENANCE SLOPES" IN TABLE OF THE HANDBOOK. FOR SOIL GROUP: B MULCH (STRAW OR FIBER) SHALL BE USED ALL SEEDED SURFACES. IN ALLL SE SEEDIDING OPERATIONS SEED, A FERTILIZER AND LIME SHALL BE APPLIED PRIOR R TO MULCHING. ]] - RNERVE COMPLEX. MORE THAN 80INCHES TO SEQUENCE OF INSTALLATION FEATURES, W RESTRICTIVE FEATURES, WELL DRAINED. HYDROLOGIC SOIL GROUP: B PHASE I(SEE SHEET CTLON N EE E 1. A MEETING IS REQUIRED WITH INSPECTOR, CONTRACTOR, R ACE ON -COUNTY VIER, R OWNER, AND ENGINEER. THIS MEETING SHALL TAKE PLACE ON -SITE. CLEARING LIMITS MUST BE D EN I EE FLAGGED THE MEETING WITH ONE (1) WEEK OF NOTICE. 2. INSTALL SILL FENCE BELOW PROPOSED SEDIMENT TRAPS AND INLET SEDIMENT TRAPS. CLEAR AND GRADE SEDIMENT TRAPS AND INLET SEDIMENT TRAPS. 3. INSTALL CLEAN WATER DIVERSION, REMAINING SILT FENCE, REMAINING TREE PROTECTION, DIVERSION DIKES, INLET PROTECTION, CULVERT INLET PROTECTION. 4. AFTER ALL EROSION AND SEDIMENT CONTROL MEASURES ARE IN PLACE, SITE WORK CAN BEGIN. 5. ROUGH GRADE PROJECTAREA. 6. SEED ALL DENUDED AREAS PER VESCH STANDARDS. PHASE Il (SEE SHEET C3.3-C3.4) 1. INSTALL ADDITIONAL INLET PROTECTION WHERE SHOWN ON TIE PHASE 11 EROSION AND SEDIMENT CONTROL PLAN AS THE STORM SYSTEM 15 CONSTRUCTED AND BECOMES OPERATIONAL. 2. FINE GRADE PROJECT AREA. APPLY PERMANENT SOIL STABILIZATION TO THESE AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS ACHIEVED. 3. ALL STDRMWATER PIPING & STRUCTURES, INCLUDING DETENTION FACILITIES SHALL BE INSPECTED FOR SILT/SEDIMENT. IF PRESENT, SILT/SEDIMENT SHALL BE CLEANED OUT FOR THE SYSTEM TO THE SATISFACTION OF THE E&S INSPECTOR. 4. ONCE THE SITE UPHILL FROM THE SEDIMENT TRAPS HAS BEEN STABILIZE AND APPROVED BY RED INSPECTOR REMOVE REMOVE THE SEDIMENT TRAPS AND COMPLETE ANY FINAL GRADING OR HARDSCAPE. 5. APPLY PERMANENT SOIL STABILIZATION TO THESE AREAS WITHIN SEVEN DAYS AFTER FINAL GRACE IS COmaACTFC: m ACHIEVED. SILT FENCE BELOW SEDIMENT TRAP MUST BE MAINTAINED THROUGH GRADING AND LSTWnI� ON UPHIu CONSTRUCTON. 18 WIN CIF 6. ONCE CONSTRUCTION IS COMPLETE AND ALL CONTRIBUTING AREAS ARE STABILIZED, EROSION CONTROL MEASURES CAN BE REMOVED UPON APPROVAL FROM THE E&S INSPECTOR. FLOW ES-1: UNLESS OTHERWISE INDICATED, CONSTRUCT AND MAINTAIN ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE LATEST EDITION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. ES-2: THE CONTROLLING EROSION AND SEDIMENT CONTROL AUTHORITY WILL MAKE A CONTINUING REVIEW AND EVALUATION OF THE METHODS AND EFFECTIVENESS OF THE EROSION CONTROL PLAN. ES 3: PLACE ALL EROSION AND SEDIMENT CONTROL MEASURES PRIOR TO OR AS THE FIRST STEP IN CLEARING, GRADING, OR LAND DISTURBANCE. ES-4: MAINTAIN A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN ON THE SITE AT ALL TIMES. RE 5: PRIOR TO COMMENCING LAND -DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFFSITE BORROW OR WASTE AREA), SUBMIT SUPPLEMENTARY EROSION CONTROL PLAN TO THE ARCHITECT/ENGINEER AND THE CONTROLLING EROSION AND SEDIMENT CONTROL AUTHORITY FOR REVIEW AND ACCEPTANCE. ES 6: PROVIDE ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE RESPONSIBLE LAND DISTURBER. MODIFIED NOTE ES-]: ALL DISTURBED AREAS SHALL DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND -DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT. ES-8: DURING DEWATERING OPERATIONS PUMP WATER INTO AN APPROVED FILTERING DEVICE. ES-9: INSPECT ALL EROSION CONTROL MEASURES DAILY AND AFTER EACH RUNOFF- PRODUCING RAINFALL EVENT. MAKE ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES IMMEDIATELY. rillm ION. CIP SILT FENCE CULVERT INLET PROTECTION To OF SILT FILL FENCE LFLOW DISTANCE IS ..OPTIONAL STONE COMBINATION R MINIMUM IF FLOW IS TOWARD EMBANKMENT ftcs FLOW2E.OT 43, #310 REk56 OR ILT COARSES AGGREGATE TWHEN HIGH VELOCIIT IN" Rlpnpp T F- HORSESHOE' WHEN HIGH VELOCITY OF FLOW IS EXPECTED PIPE OUTLET CONDITIONS A A sb Aa 1 A a _I A R(MwJ a- v Ear OOIPIo ; net i A- . omvrm �. coos rw a�iw Va DSWC Ms. 3.IS.1 OUTLET PROTECTION II I L = THE DISTANCE SUCH THAT POINTS A AND B ARE OF EQUAL ELEVATION 2 ACRES OR LESS OF DRAINAGE AREA. 2-10 ACRES OF DRAINAGE ARE g• 6.. FILTE FILTER 3 R CLOTH CLOTH (OPTIONAL) (DOWNSTREAM VIEW) (OPTIONAL) (DOWNSTREAM VIE VDOT 41 COARSE VDOT #1 COARSE AGGREGATE AGGREGATES FLOW 3-- FLOW CD ' OR 3/4 OF DITCH HEIGHT Sediment Trap design tlminape area (acres) (<3) 1 0] I Imp wlumes: arcsrn nw¢wty eMa OIS) area 1eB wNme(cy) \`A 413 365 114 541 188 exrmMee 415 ]42 "1 416 See 311 41] 1220 40.5 , 418 1496 50.3 jOfieTN aw„ 183 0 on met stomper •a wrz �i.w. m.0 wavon •,...,.w. met:BI reaUretl ICY) t6PD4) TI ] bottom M stone wer(R) 4160 met stomp' of d Rlis elevation 1"' 722 "coame aIg mele shall te VDOT 0. 1135T of 95 s ope of wet s .Us slUNs 2.1 war M.B. U)(6x 0A) 6.4 tlry stomp'' bottom dlmp leelon(R) 413 tlry stomp're,N NXJ Icy) (6%'DA) TI.] Oottom tmp G ens ans 33x13 crest Nstore- 4180 N, d tl0meieAson(11) 41B dry stump pmwtl� et this deVeon (Cy) 918 tap width Of tlsm (A) 2.5 slope oftlry sINXEJs siI 2:1 tap Rap dtnrensions 58x37 8 SEDIMENT TRAP #1 Mu ��� / ALONG THE UNr o sTnxesj! i Fl1I - TAKES AND PACTTH �4 ON. THO.,.CmENCH SHEET FLOW INSTALLATION ( ERSPECTIVE VIE i) POIN DRAIN ELEVATINSTALLATION USF (FRONT ELEVATION) 3.05-2 O IN 1. SET POSTS AND EXCAVATE A 4"X4" 2, STAPLE WRE FENCING TO TRENCH UPSLOPE ALONG E ONE OF THE PO- POSI 155_o 5. 6' H. I FACRIC TO 4. BAACAKELOL AND COMPACT THE HE WIRE TTHEFENCE AND FILTBNEXTEND IT INTO EX . THE TRENCH. FLOW / I EXTENSION OF FABRIC AID IIRE INTO THE TRENCH. SSF -�'&-BE SILT FENCE (WITH WIRE SUPPORT) NOBOH - GRAVEL OUR. INLET SEDIMENT FILTER ACCEPTABLE TABLE 3.31-8 TEMPORARY SEEDING PLANT MATERIALS -QUICK REFERENCE FOR ALL REGIONS" PLANTING DATES SPECIES RATE(LBS./ACRE) SERIF. 1-FEB. 15 50/50 MIX OF ANNUAL RYEGRASS (LOLIUM MULTI-FLORUM) & 50-100 CEREAL (WINTER) BY (SECALE CEREALE) FEB. 16-APR. 30 ANNUAL RYEGRASS 60-100 (LOLIUM MULTI-FLORUM) MAY 1-AUG. 31 GERMAN MILLET SO 8 (SETARIA ITALICA) le TABLE 3.11 SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA TOTAL LEE. PER ACRE MINIMUM CARE LAWN COMMERCIAL OR RESIDENTIAL 175-200 LEE. KENTUCKY 31 OR TURF -TYPE TALL FESCUE SO-100% IMPROVED PERENNIALRYEGRASS 05% KENTUCKY BLUEGRASS Od% GENERAL SLOPE (3:1 OR LESS) KENTUCKY3I FESCUE 128 LBS, RED TOP GRASS 2LEE. SEASONAL NURSE CROP ` 20 LBS. 50 LEE. LOW -MAINTENANCE SLOPE (STEEPER THAN 3:1) KENTUCKY3I FESCUE 108LB5. RED TOP GRASS 2LB5. SEASONAL NURSE CROP' 20 LEE. CROWNVETCH" 20 LBS. 150 LBS. ' USE SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATES AS STATED BELOW: FEBRUARY 16TH THROUGH APRIL.................................. ANNUAL RYE MAV 1ST THROUGH AUGUST 15TH ............................ AUGUST 16TH THROUGH OCTOBER ............................... NO VEMBERTHROUGH FEBRUA TN 15TH........................ FOXTAIL MILLET ANNUAL RYE WINTER WE "SUBSTITUTE SERICEA LESPEDEZA FOR CROWNVETCH EAST OF FARMVILLE, VA (MAY THROUGH SEPTEMBER USE HULLED SERICEA ALL OTHER PERIODS, USE UNHULLED SERICEA). IF FLATPEA IS USED IN LIEU OF CROWNIVETCH, INCREASE RATE TO 30 LBS./ACRE. ALL LEGUME SEED MOST BE PROPERLY INOCULATED. WEEPING LLVEGRASS MAY BE ADDED TO ANY SLOPE OR LOWMAINTENANCEMIX DURING WARMER SEEDING PERIODS; ADD 10-20 LBS./ACRE IN MIXES. aurvoFT WATRR R RITERS:'WATSIN TP SEDIMENT CONCRETE IIII �K A— tZ `•CONS INLET IP UNPROTECNVENIENC. ROAMAGE TO nOUACENT STPUOTURES ANo LY ro v x E^ 1101 SILT FENCE DROP INLET PROTECTION OR" INLET vATH M GRATE TERR A, _AMC G A: _ iy \ GATHER U 1 EXCESS 3^ CORNERS STAKE PERSPECTIVE WEWS0'[ FABRIC C IIIII 91 lylrv. � DFT♦II I ELEVATION OF STAKE AND FABRIC ORIENTATION s 1 RIPRAP IFS ME ♦RR��YOME'IHOD�OF INLET PROTECT[! IS APPUCABLE WHERE THE INLET DRAINS A RELATINELY PUT AREA (SLOPE NO GREATER THAN 5%) WHERE THE INLET SHEET OR OVERUND ROWS (NOT EXCEEDING 1 C.F.S.) ARE 320 IP TYPICAL. THE METHOD SHALL NOT APPLY TO IN RECEIVING 3.0T-1 CE CONCENTRATED ROWS, SUCH AS IN STREET OR HIGHWAY MEDIANS. (acres)(13) 1Be devapon(ft) z rea(so VPI-(cY) inn 436 1454 is 437 1759 "A 438 DOTS T1.0 438.5 2252 40.1 170.5 mcuTw " am o.. et stomper •ac wa .u-� my mmn aa.caw et stompe".I-(CY)P37-CA) 58.6 xt of,tom war (R) 43T.0 d stO- P1oMtletl at 1h's s NI (oY) 59 4 orx of wet sraaMM a Ues 2.1 e .,I (PY) (671DA) 59 11 pmMtlaf st IN. deHetipn (cY) 111.1 st.-sitles 21 coarse aNMH gRIR shall be VOOT #3, #357 d #5 bIT 00 &DA) 5.3 otom length )hap le .IS) 43fi bdlom se, d en 35X41 top oftlam ele'.ation Bl) 439.5 tm �WINDnOldimmcm,IS) 65z52 . PERMANENT SEEDING MIX FOR PIEDMONT AREA 9Q CI Ca �I T1 T1 T1 71 STANDARD ORANGE VINYL OR PLASTIC CONSTRUCTION FENCE ATTACHED TO POSTS (PRE -WEATHERED WOOD, GALVANIZED STEEL. IRON OR THICK PVC PLASTIC), AT LEAST 40' ABOVE FINISH GRADE WITH SPAN BETWEEN POSTS NO GREATER THAN 6 ON CENTER. EVERY NINTH POST SMALL CONTAIN A WARNING SIGN THAT CLEARLY IDENFIFIES THE FENCE AS A TREE PROTECTION FENCE. (D-IS, .38 , Ac..Ls �TocounsE mHALT T I. PROFILEc Inm. en wox�sale S� eE M. -EATiory xo LCNEss �PI N �yrlw ocvKrL 'LT" cloTx- SECTION 1-N b... vlA-AA-A v e Hy of 1 mR' Iww1. be slNle9 xim a nwwwuN luno]fWunelryPbvl¢a Wash hoee uilBa Nwx NnnM rleM ,esWw nnM afiwu vH w mT m4mu. HxHm.. or wNmcows�. PAVED WASH RACK ENTRANCE M TH OA 4 c �CRATGW. IS507 q LAC No. 04020N4850] ONAL •• • d 0 oc z 0 E f 3-26-2018 J. SANDERS DESIGNED BY A. ALLISON CHECKED BY C. SHIFFLETT SCALE WA \a z LU � s NJ m z Q Q III z O J Q 2 Z WLU _ O z Z z 7 a o w y N tl � w LU'e LU do e zLU a o z O i- O Z. Z I W O U Q� It o J W e Y > A i LU E Y JOB NO. R 40241 cA L SEDIMENT TRAP #2 C3.0 EROSION CONTROL LEGEND LIMITS OFCLEARINGANOGRADING SOIL INFORMATION _- - - - - - - CRAINAGE AREA BOUNDS ,vxyL \STONE WEIR o ` LE CONSTRUCTION ENTRANCE 3.02 ` rawrMw�waar�la `,SOIL TYPE: o / / v ' F BILLFBNCB DB a/2via \`51C o C3.2 I O ® DUET PROTICTON 3.07 /SeDIMENTT- 8 ACpz O.BRE DRAIN AGE AREA NLVERTINLET PROTECTION 3.OB L \ N I I O TOTAL STORAGE REQUIRED: II7.9 CV TOTAL STORAGE PROVIDED: 130.4 CV ST2 O TOP OF DAM ELEV. = 411.11 \ L J DD DIVE -CH DIKE EDS SEDIMENT TRAP MAE LIMITS OF OP ® OUTLET PROTECTION 3.16 DISTURBANCE=2.BB AC-�rrr---111 ' / `ONCE STORM INLET IS REMOVED, '` > E ��� A _ / / / z\ �� DIRECTSTORMWATER TO _ `\ ti E i- CRITICAL i �� I� - '' SLOPES(TYP) L� I f 1p `SEDIMENT TRAP N2 `E\ LN CO ROCK CnECU DAMS 3.20 PT TEMPORARY SEEDING 3.31STOCKPILE W V m SCALE 1-20- w - /E�TI �2]0 PERMANENT SEEDING 3.32 uy�o Nvo ; zss ` `. \ , ` D zo ao Mu 3 Q LL z0 ( �- O 1 MULCHING 3.36 TOP=A'A.6 TE \ \ \ \ ' O - TP- TREE PRESERVATION FENCE 3.ED WlI INV OdT=C253\ NN N \` ` O DUST COMROL 3.39 'Ery 0 LIMITS OF u a 0 2 2 tSURVEY VIRGINIA EROSION AND SEDIMEM CONTROL HANDBOOK' SPECIFICATION NUM CRITICAL BER W W SLOPES (TYP) Be 0 as STAGING/LAVDOWN I/ /7�I BUILDING DDP— o/- \ DATE 3-26-2018 DRAWN BY J. SANDERS DESIGNED BY 1P /' •• A. ALLISON I1 ' \ �-1- 450\ f� �,.'\\ \ _v� I A ` • CHECKED BY �� ?� - _ _ _ _ `\\ v� \ `\ \ • C. SHIFFLETT ILK • SCALE SOILTYPEr Sp v ;� v • CL TOTAL LIMITS w of / z v DISTURBANCE 288 AC / _ _ - ul i - -'JOINT PARKIN \ - PT( P ` ✓ I \ `\ „ , \ / // Q c &ACCESS EASEMENT / 0 - Ofi. 1282, PG.430 / \ i \ t \ -OX. LOCATION 20'UTILITY EASEMENT c, O Q 1 Lu CL >Lu p / / I 2'_ Lu O0. V A 1 1 I: L 0 , v v - v i', I i v at� A� w to 1 I Lm 2 JOINT KING WAOB. 1282, PG430 /P N ITAFYSEWER I i _ Lu a/ le SHEET NO m 8 minI�fi �;• L rrm i �I� ii/li I� anJ 3E REFERENCE LINE- SHEET C3.2 F .IS L m �„1_ dilud.�e "yam JVINTPARKIN11 ACCESS EASEMENT p / T VO l l l \ DB. 1282, PG.4M \\ \ «� auUT— \ _ CRITICAL c S i 1 gg J ROX LOCATION 30' �' ,, ✓�gy / / VEPCO EASEMENT 4 \ (LOCATIONSCALED) \ H WIRES INSIDE I n r \ I _ r .[ 445 - —I ,I / '♦ / �i���v i �- �I � ____ e I � '�► -___ l II,, ' , 1 " ' \ GQ<�� \ / \ \h` / ♦♦ 111j~ _ - T m _ _� _ / i _ �'` TOTAL LIMITS OF DISTURBANCE \lam \ _ __ ��_ 1 �� ♦ // I:\. S� __ .I- ' I_ % , �� f.,, ,CRITICAL , •��� , -� __ \ � ' \\�` I� A I III � � , / 'l / / , ' �y� - �- _ _y -, `�l,_ _ ` �c ♦ \\.,\ _ \ rs _ - 'M111 m \l' ,_ I elll� /� �, /',' I `'\ ' � '�% _ � ,♦ I III, �, STAG a3e' _\ `` .y �J(rL— y\ _ �.qaR' AREA � o ��a� � ''� \ ♦yam -__� k I P� � / 3F \ SQIL T j PE>, \C_ ♦\��w I 1 STORMGRATE ,� C r\ ,' \\ \4'� •- \ `� — `� \ �. _ , TOPJ88.56 I ` PE: \ 3 �\ ® 1Y I 5 _ - \ - \� INV OUT=429.3] ,S\ CE- 1 _ / /- 51B \� �� ` STOYKPRMSEWEA 15' S \ _ (L AjIONSGAIE EM y� ON I ` OC D ' E WEIR , 1 IODEN STATUE _---' � -- -__ _ \� • �\\ �' \ �.8 \" �\� D$.'1282.PG 49d �'�,___ , I -- --—__-- 1 , �� �" '_'_-_ -��� � ', � �� �; �� A \ �. v�A♦�� ;�v--'--_, ;,- �� �, / �� yam, v _, '' � �� �-, All- �, ski �'-�\ \ /,� ♦\ rs /�. / y�1 , - 2'PAVERs /owl 9r \ , Y N aSEDIMENTTRAP#1 •_ �— _ TOTAL STORAGE REQUIRED: 143.4 CV' \\6 TOTAL STORAGE PROVIDED: TOP OF DAM ELEVATION: 419.0 4'WOOD STORM'GRATE `\ /�✓ ____________ - _ _ ____-_-------------------------------- - REFERENCE LINE- SHEET C3.1 /I l i I ] l L \ TTARYSEW//ER 1AS /\ B2 I - , 1, / SQIL,TYPE: AIL PE:� 51 - ° / SANITARY MH C/L BOTTOM A4546 ♦♦ l / 1 I ' I EROSION CONTROL LEGEND LIMITS OF CLEARING AND GRADING - --------- cE SOaINEOI.— - DRAINAGE AREA BOUNDS - CONSTRUCTION ENTRANCE E. SOF 3F SILT FENCE 3- IP ® INLET PROTECTION 3.07 cOiP ® CULVERT INLET 1N.1-oN 3.De DD DIVERSION DIKE 3.09 SOT SEDIMENT TRAP 3.IS ORE. CHECK -ME 3.20 OTEMPORARY SEEDING 3.31 OPERMANENT SEEDING 3.32 OMULCHING 1.11 TP —TP— TREE PRESERVATION FENCE 3.38 DC 'VIRGINIA DUST CONTROL 3.39 EROSION AND SEDIMENT CONTROL HANDBOOK' SPECIFICATION NUMBER C3.1 L�/O SCALE I"=20' 0�U i4df cx&m;?>�h1�NYNII u�„ i3uMr.�L atl7fi'I7 �, a/21na 0 w 0 0 • d 0 oc z 0 f f a O 3-26-2018 J. SANDERS DESIGNED SY A. ALLISON CHECKED BY C. SHIFFLETT SCALE V" 20' 40241 SHEET N0. C3.2 L EROSION CONTROL LEGEND LIMITS OF CLEARING AND GRADING �gALTH0 / //I>%`/ DwrvAGE AREA eourvps ,\ CONSTRUCTION ENTRANCE 3.02 UCRAfGW. na No.D ozoassI.%OfARRKI SOJL TYPE: m plc o // 0 9LTE"GE ID, _ \ CULVERTJNIETPRDT1— B.D. SAL /O ` I C3.4 I O ® wLET 1-1-3.m Q 0.5'AWDT RIPRAB WIDTH 1 = 3.]6' , ° ` \ N N ` DD pIVERSION PIKE 3.09 WIDTH 2=].26' B / O \ N LENGTH=B' 3 - O DEPTH =1.0' A O ° \ \ ` CLFAN WATER DNERSION x GWO 3.09 0 0 TOTAL LIMITS OF r ` OP ° �N \ `V ` c DISTUIRBANCE 2.86 AC =/ ST SEDIMENT IRA' 3AB j E CRITICAL OUTLET SLOPES (]l'P.) / - I Y/` \ - \ \ , OP ® PROTErnON 3.1R 3 / oE. o� III' ROCK CHECK DAMS 3.20 Q w m IMU IP $ N ` SCALE1-20' TEMPORARY SEEDING 3.31 ayon 0 ` \ \ ` 0 20' 40' PS PERMANENT SEEDING 3.32 3 kO LL O MULCHING 3.39 ~ U Q uPNi N - TP- TREE PRESERVATION FENCE 3.3B i ry O T� LIMITS OF L V\` L u a Z 2 2 SURVEY CRITICAL N \` DC DUST CONTROL 3.39 O P P W W MU _' \' \ cP SLOPES \ \\ N ( / / VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK' SPECIFICATION NUMBER w 00 Be / D.--/ % / \ \ STAGINGMYDOWNI \ W W AREA Ps 10 'N DATE _7 TP `.. \ \ 1\ _ __ 316-2018 DRAWN BY c,- _ _ J\ `\ - \ ` \ `. / / ` J. SANDERS DESIGNED BY A. ALLISON �, N\\ \ \ 1 I I \ • CHECKED BY /' `m _ _ .\\ \ `. \ • C. SHIFFLETT ILTY A • S LE SOIL TYP v v • Z W olf TP V' - / Q OB. 1282, PG.430 \\ TOTAL LIMITS OF _ APPROX. LOCATION PS \\ i 1\�� \ 20'UTILITY EASEMEN A5 DISTURBANCE 266 AL \ ,/ N. 4 DB. 12e2 PG.430---------------- o O a B V`� \� `�`� `� \ \ Z j U Z � Z 962 T V \ x L \ \` \ \ - iPK LB / - =n\ \\\ 0 w LL 'ems Lu \ Z � a$ \�/ \ _ O 0 � � Lu S� W 2 IINy -4&]3 /I{ g <3266 - `I l 1 5 9 �' n / JOINTP 9 ACCESS EASEMENT62,PGA ` / y /n�. ,n f H m 2 r OB. 1P82 PG.430 ] �w I _ / 3r P �/ / it K K K � 1 1 I 1 \/ _ tr N r \ / /SEINER r 1 r / ei GLu DW E4Bo I JOB NO R`e 40241 SHEET NO `mS ��� r��% �� ��� �Y'� i �'U� �i� •� /�� / �'�-��� i '�'�' �'� i ICY % �r� i il��ii/irrl� i C3,3 REFERENCE LINE- SHEET C3.4 E.E L REFERENCE LINE- SHEET 3.3 \� m m T m T T�� m m T m / s _'m r �C� EROSION CONTROL LEGEND - ` I / , , ,� / I ' l / I Y � � � QMITG OF CLEARING AND GRADING /iARYSEWER l SOIL INFORMATION EASFM1E T �v - - - - - - - - - owrvAGE AREA eourvos / CONSTRUCTION ENTRANCE 3.02 9Lr/ENLE 3.DB ta..mm� vtl7�rx IN- INDTECIIGN 3.07 CURCRTINLETPRUTEn,DN B.D. pIVER310N DIKE 3.09 CLEAN WATER D.IRSION 3.09 o 0 \ \ •D3( \ � / / J � / ST SEDIMENT TRAP 3.13 E j \ \1 JOINTPARKINO, 0 /, I I l (i' / I \ / - u E W ACCESS EASEMENT / T ( - l $ / r ` ' ' OOP ® OUTLET PROTECNON 3.1a ti 3 /off Ds. 1232, ROCK CHECK DAMS 3.20 TEMPORARY SEEDING 3.31 m o 6 PERMANENTSEEDING 3.32 3 p O MULCHINGoZ v V / / r I I ` — TP— TREE PRESERVATION FENLE 3.3a ~ yo, ry O H / DUST COMROL 3.39 " F Uri f g r 1 , \ `\ VIRGINIAEROSTONANDSEDIMENT CONTROL HANDBOOK' SPECIFICATION NUMBER Be KUU o \ \ \ \ C3.3 � o uWi vi 1 \ _T �u SQILITYPE: IL PE: pu<16 a m OnrE 3-26-20111 I / _ I I -, I ' _ DRAWNBY J. SANDERS / / y gui _ •l ; c n CRITICAL \\ ` 1I ` J III I/ lI \ I 1 ' ( - _ DESIGNED BY OPES x - r` l _ • ��.,�; �,., � ��;'' i ✓�'� � / / r (1�{+ � �° U � �;�� .'__ I I 1 I � a.aLusoN l r / ' (1 ♦ 11 ' , . ' / , \ r • CHECKED BY �,� r r ' / r �% 5 / / / 1 scALw=zc=zc C. SNrFFLETF A452 za a0' scnLE \w - �'-✓ � �T,/ 4S1 -1 SANITAR✓Mr l Cr Is Lu MU TOTALLIMITSOF- \ DISTURBANCE 286 AC W v Q < ip ` I I STAGING/LAVDOWN I / / Lu 11 0 Q AREA r- > SANITARY MHLu / '�- 1 ♦ Z z c INVIN<26.93 INVOUT=42569 / a p f/ y Lu S0151 B P_ E A V ��h� 1 / STONE WEIR / v Z ¢ Z Lu mu CONCILE�-Parr �� o OENSTATUEo. a 1 1 OLu SOIL TYPE:_ — �c� _ '�� - �� -V\\ /0�� \ �%� i�� - W e o 2's" f PAVERSIGp/ - - \ µ\\ \ — \j X / ` 2 ,/ � �e ` r SEDIMENTTRAP#1 1.0TACREDRAINAOE AREA _ -�'/i TOTAL STORAGE REQUIRED: 143 CV _ _ \ \: ,\ ` �� u L E W` `` �� 1 \ TOTAL 9TORAGE PROVIDED: 163 CV \ , V 2 ��\ /® ® / \\ \ \ \ /,� TOPOF DAM ELEVATION: 420.0Lu -- - v � --- i> 9 / WOOOGUEse�O' 7-- \ \\ a•woaoFEN �r \ \ i _ /f� IP \I\ �� --- 1 i S o --- V , JOB NO. pP fENCE� \�� -� r\\ - \• /fir -- \ ti\�L ---------------- — _ 40241 - \ \ SHEET N0. m o 1 L Section 5. Stormwater Management Plan (Provide a reduced 11x17 copy of the latest stormwater management plan. Do not reference only.) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County 612: 1z•easle-solia corer STA 10+4S.4] 1�1 ° \` / , 1 SCALEI"=2P' _ I TOP441.]5 �eALTH OF n INV IN 43].65 (813) / nnnL 4"C.O. (T1'P.) ` \ \ ��i -�� n B1Y. 12"Basin-Circular Grate INV IN 43].65 (615) C 810RETENTION TI8iF 3X \ \�0 2Q' ` 40 - nv STA 10+43.4] - o INV OUT 437.55(611) Cl, PLANTING / 5 TOP 441.75 N F 810: ES-1 for 12 inch PIPe OCIWGW..1.xOfARSKI IN IN 43J.65 613 +2 1 ( ) a STA 4 .10 9 Lic No. 040204850] BIORETENTION O INV IN 43].85 (615) ♦O TOP 436.10 / FACILITYIFOi 1L INV OUT 43].55 611 INV IN 43].00 611 Sg 450 450 450 450 LENGTH 8' DCAL ® \ "*TONAL OE > E w 3 LLi; 3 wWm wJ uyo z 3ol'n O o�v � "aN ' T6 M2.OD LIMITS OF 9+50 10+00 11+00 9+50 10+00 11+00 11+50 Z I' FFE- �suRvev CRITICAL \ STR 616 - STR 612 STR 614 - STR 610 210. w I `\ SLOPES (TW) HORIZSCALE: VW' HORIZSCALE 1"=50' na TS 65442.0 6 \ `\ ` VERT SCALE V=5 VERT SCALE 1 5 _zIMU5 606 DI368RThI^ U U PROFILE SCALE STA 10+10 7 4 r°at INV IN 432.83 (607) t� W W 9TA 10+29.44 STA10+00.00 INVOU 6042MH(I STA 10+8].38 606: MH-1 E00 MH 1 Ao'na TOP 439.00 TOP 439.]1 STA 10+42.17 TOP 439.00 y M INV IN 42fi.51 (fiO3) INV IN 433.04 (E%. 15") TOP 439.50 INV IN 42fi.51 (603) �e0 INV IN 430.41 (Q41) INV IN 43304(EX 15") INV IN 431.28 (805) INV IN 430.41(601) w oyOz INV OUT 426.34(EX. 15"7 INV OUT 432.S4(607) I NV OUT 431.16(603) INV OUT 426.34(EX. 15") qq 445 445 445 445 445 PROP. GRADE 440 440 EXIST. GRADE- D'815 "' OF 435HOPE 435 430 430 /I EXIST. GRADE 440 440 PROP. GRADE 435 435 430 430 4q' OF 1 'HDPE 2.p0% O 425 425 445 445 445 PROP. GRADE EXIST. GRADE 440 440 435 435 43.47' OF 6, 26.82- O 12" HDPE ® 2.oa% 12' A 2.04 430 430 MINE M 1PIP CI, I 607 10.74' OF 425 NEEN a 9+50 10+00 11+00 9+50 10+00 11+00 11-M $ \ i STR 602 - STR 600 STR 608 - STR 600 HORIZ SCALE 1"=5P HORIZ SCALE 1"=50' VERT SCALE 1"-5 VERTSCALE 1 5 O Lu InIf cl 'JOINT PARKIN &ACCESS T \ EASEMEN/\ , DB. 1282, PGA APPROX LOCATION 20' uTILITY EASEMEN OB. 1282, PG.430 O J p a Lu \tom z<- %II � z Q - ® 1 i 1�46�_ v V V �A V� \ 1 L r, 00 V�.sal - -CL U a Q Lu m z Bz Lu Q w �c L ✓OINTPKINc :..) GEMENT ACCESS a I DB, 1P82, Pc.4sa I. / L I I I ,^ Ea \r V' IrAarsEivER I :. � I.I-I a � 40241 I II/ ,II'I I I I i 1 I � SHEEf NO - I,i rm%�L' % ri��L��rr�ii�lills, ir'"m mT��i� C5.0 mo REFERENCE LINE- SHEET C5.1 € :E L REFERENCE LINE- SHEET C5.0 40 , e121/10 - _- - _ 1/1 f / ; \ e � \ W w \ JOINT ACCESS EASEMENT II'l U I OB. 1282, PG.490 I/y � 71-��I I /Ill I�iIIF J I� _ �S o 0 © ' s\ 10 as I u<10 DATE 3-26-2018 If \� Il_ - / // I I` -- I I Ii _- --- _ - _ DRAWN BY vv y y� j // 9 I J. SANDERS _ _ - I-I'� / / I/ '' ' _ • DESIGNED BY WV� calnc`" ! r� I /h / '... �o / I I ' I A. ALLISON ,/ , - • YI, CHECKED BY - J / ( /. I II / / / \ ! I \ r �. _ _ _ - • C. SHIFFLETT cQ\ \ UOl� \ I / /G/ _ / / 1 I/ a5/ / / I I' • • SG4LE py^\ \/ ` - \ I '� � �: 0.52 __I l l {' / � l `,\I\lil �\, I 1 ,� / �/ _ • 1_20' J SANITARYMH \,I ll� i / J \ Q' / i I l ` _ _ _ • roP-asp.eaoi.£s Z CL Z LLl s _� 44T -' Q8 -\\ ---- _ - -- Lu SANITARYMH TOP-03r98 I INVIN=42Bs3 / , 4sr ,/' A d e-\ `VA a5 ��•?� O� �� I lNvour=az5 ss - _ A Z - - �\ \ I \ ce t 43B ° "' _ --_ �"/ // ��\ �• \\ \ �\ l i' \ /\\_ !1_ _ �, ��:._ '/,��� ��.`�.; / __=/"-_"ate<=;\--. _- ,"-,; „ � � J �;a gCoicRErE, t IODENSTATUE ' r/ V c LU 2•PAVERs �v k a ll1 S WWOGAEB� �� �, \ \\ — 4'WOOD FENCE\ �C � `_ / i - 1\ e // t�� - ____ _ \ \ ' \ JOB NO. e , , _ __ , , �``e O/ j i'g- a•woDDfENCE• `� \ \\�' ��\ ! k - �%r' ---- _ ------_ �� _ •, - SCALE1'2o' 40241 o zo' 4o \ --- C5.1EE va - I L - f ---' --- - `\I - _ SCALE 6]' SHALLOW CONCENTRATED FLOW �-�� 5]' MANAGED TURF / , -\ - - tiva,'r.�atl1fi'1. \ \ / - ANALYSIS POINT 1 a 2i is I' I, I� I I I- 100'SHEET FLOW ^I�% ■ . �� mo•MANAceDTURF/�` ANALYSIS POINT 3, AT ].6%' PREAREA 1 1 / - _ PRE -DEVELOPED DRAINAGE AREA \ -� �� '� ,, ° ° TO ANALYSIS POINT 1 I'` �%" ,��(OFFSITE)- _ - -.. _ g E / ✓ - -- Tc=7MIN E •E ;EXISTING POND LL�3 PREAREA I-2z PRE -DEVELOPED DRAINAGE AREA TO ANALYSIS POINT 1 ♦ ONSITE bI , ' r Tc 7 MIN IF ' I y °�^ � I � ! `..• � -. ' 3ss•P1vE FLow ``�" %' ``\ � `` , ``,� _ - � o 0 PRE AREA 3-1 PRE DEVELOPED DRAINAGE Y a a - 8 'P ', �� g +� / `-` ♦ ! - \ ;: AREA TO ANAL YSIS POINT W W PREAREA 1-3. q55 /.. ♦ w� MA—, \ ` �, �a 30 MIN PRE -DEVELOPED DP41NAGE k\.„. ♦ ! ,fa AREA TO ANALYSIS POINTI� - I (ONSITE) a� _ ,a i�f ! , ! \ t-' ,. '��"___--- � Tc=BM/N �<-, `e'\.:. u;iri'i�uli4 a am CONCENTRATED O n m I 10' IMPERVIOUS I i ,, fra-- AT 12% Y /'�I DATE !� 100'SHEET FLOW ' _ , > �dy \ S/, I / /. - - p5g / 1 ,, 96' MANAGED TURF / , , ` ` ' --' 3-16-2018 AT10% 6'IMPERVIOUB J - I\\I\\\ (h5 �A6a 1 F IF\I, '../ A}, �y� f � 1 , � \` t 3 '- � ,S J. SANDERS / ��i� \ \ I ' --� �J 83•SHEETFLOW \, , / F_� I % �\ \t 1 ( I I 5'' DESIGNED BY 79'MANAGED TURF / ,\ r {k -� '' ( _ l • 7-0 ALLISON AT3%3i' \ / % ,/ r 4 ` ' '._{I 4 I 'lII / �'� \ � / � ,� �1 / L� \�/ h' �, /%' � / 3 �y��i�r �r i/ I/' `uv, • 'f',/ I I '��, Illl�,'l � V _ _-_-'� • CHECKED BY �V'' a� `\ ', S.' _,. ,. - / �,' _\` '°�a'� 11 di,' "/ �I s� - / '�'r • C. SHIFFLETT \ \ ' AREA OF UTILITY INSTALLATION NOT INCLUDED , ti / r / • SCALE WITHIN STORMWATER QUANTITY CALCULATIONS.) ,'/ , r'=a9' Y \ GRADING & LAND COVER ARE UNCHANGED. SEE *h �; 1 '''l�;','�i ' PLAN TITLED "KESWICK HALL ADDITIONS AND SITE , IMPROVEMENTS" DATED 3/26/18 BY TIMMONS '�' �I ,q�, �' Y; / ' `- %,hi'l i ' ` EXISTING p GROUP FOR COMPLIANCE INFORMATIOT 'V { �/" �'�''yy _ -��'" POND ft • LL.I _ CL Z a- O Lu Lu CL Yk - °a J 0 V 4 5 - [ Q �439 Z �l n/— —ovr� a A _ ` \.� �'�: / 6��r moo\ / v3 j11Y IIJ-I` ./. - _ _ W l7 '�. ;O � � �,�_,- �_ A �. �� �� A �' v � � ;� r a. vo s^' / / IS• / �'% � (, r'I, +`lifilri -" -� � > � O - - s-1 o / - w / I �. w s Q — /� / C V if I�✓ - t ti:\ -' � _ �' s,o„ '/b� _ PREAREA 2-1� 1, 'l< - -� _- /I/-. h ra � w Lu �y PRE- DEVELOPED DRAINAGE - ` ` 'I r v,'/.' LLI co 1.wl AREA TO ANALYSIS POINT2 ,1D9•sHEEr FLow - ,/' ',a Z Q Q s� 100'MANAGED TURF'Tr/ - W ONSITE ,� � l ' e t' \ p9 \ 9' IMPERVIOUS '/ /r ' - yl' Q Tc-7MIN - � AT 5.8% / .I; -�.. �� - '- � � i 41,E — � � __ - _ ���,.� •�,„',;. ��--: c.:, - � � ov W y� Lu 124a'PIPE FLOW/ _� -- -'�, _ / 11 U -635 ZI — _'�' a"°� P F_' , 4'�?7:r. / ' 115'AT"', � _ '- - - i \ - - J � 05 136 290SHALLOW CONCENTRATED FLOW Lu nrioevUl ANALYSIS POINT EXISTING Y �a JOB NO. 2POND '`� SHEET rvo m`s 'PRE -DEVELOPED DRAINAGE MAP41 --- C6.0 e E L — f — - AL x SCALE 1"�0l J 24' SHALLOW CONCENTRATED FLOW 24'MANAGED TURF _ . / _ _ �, AT 7.6% " ,``>! o°/ `\` OCIWGW.I.%OfAR6KI'i � — , - J - Lic No. 0102048507 ANALYSIS POINT 1 A _ � I 100'SHEETFLOW �n1GaMANAceDruRFiANALYSIS POINT 3 POST AREA 1-4- _ _ POST -DEVELOPED - - - _ °DRAINAGE AREA TO - -; M ANALYSIS POINT 1 - - E (OFFSITE, DETAINED) Tc = 7 MIN - E ;EXISTING � 3 POND POST AREA I-5a�5 T :. — / POST -DEVELOPED -- I - DRAINAGE AREA TO ANALYSIS POINT 1 0'' I _ 1 v - - --' ,,o 3 0 o YI - ONSITE DETAINED - - - - - Tc t( GOLFCOURSEiI} 110 POST -DEVELOPED DRAINAGE\\ AREA TO ANALYSIS POINT -_ - o ww - a a / $ � N�� \-(ONSTE, UNDETAINED) XI,`�° _ -- c, °J \ - / , ~ �, �� \'-Tc=30 MIN `,! POST AREA 1-6 4y6 .� IF° �► \1 - POST -DEVELOPED DRAINAGE Y ! AREA TO ANALYSIS POINT 1 - -452=' (ONSITE, UNDETAINED) - a CONCENTRATEOFLOW !y�� f�,ri "r�lllllllrl/lil� - __ O O^m 10'IMPERVIOUS/''•r/''riir, �'I 857MANAGED TURF_/'//�/��'��I AT 12% Y f (I `'ji DATE 100'SHEET FLOW - 5A i ; ; \-, , 3-26-2018 95' MANAGED TURF ` \ ,1� ,\ \� `- ��/ IMPERVIOUS "I,`� \\\��`�Ai:,: ��\` _ DRAWN BY AT 10% �\ q ��\t✓✓� \ I ' �F p - \` t 3 i�.- ..-. li' `�' J. SANDERS DESIGNED BY ..SHEET FLOW \\I ( ' I `I Lyl • 79'MANAGED TURF- gIMPERVIOUS / ' 1 ) , Y I • A. ALLISON AT 3% '</�i,.r r'/ I III IIII�,'l V _ _-__ • CHECKED BY 44 \ repa'e� I 1 dl r < • _,- J II ui _ / J I�'r - • C. SNIFFLE- /rl'� v ' AREA OF UTILITY INSTALLATION NOT INCLUDED ti ) r 'r ' scnLE WITHIN STORMWATER QUANTITY CALCULATIONS. .... GRADING & LAND COVER ARE UNCHANGED. SEE *I ' 1 '_ I I I P LAN TITLED "KESWICK HALL ADDITIONS AND SITE _ �1�� j; 3� / / ' '�'r ' - -- Z IMPROVEMENTS" DATED 3/26/18 BY TIMMONS '� °• 1 r'; / I `-/u', , EXISTING O GROUP FOR COMPLIANCE INFORMATION --- --� 1 7�- y I '�/�;'� �� ; POND W CL Lu Lu LIJ wm CL / / \�✓�/ /}� �\ r�t\ \ \� •\\y' - 'Ss Orr{{., ��1 ''�, l "li� 440 '� \ \\ x\\ \S {.., , Q L� $ O _ — J - ' a _ O a V V 4 - [ - �439Lu ���,-_ A+ ��. �� �' Ai, �— i` �'i Po s^' '✓ 11 ,'i > � 4.1 9� Z - 6 - z U) 10 ''�. r 1 I % J , / , �r �'' I w Z y s Q — - - `r+'L.X 't `I �,'{� 1, - / r: �r /�,'%,'I"/ i w a .o if I�✓ - v<<,\ -' � _ °° �,o� '/�''� POST AREA 2-2� "°� "16o•sr,"_�.J.1 "hIl,r.''I'/'/ l/'/,",, '�`I`- , - - _ ;+ , -" - �Z w¢ WQ 1.3 POST -DEVELOPED DRAINAGEW,'z sonHEer FLOW AREA TO ANALYSIS POINT r166'MAnuceD TURF W ZaroIMPERV- AT 5.8% 4 (O ITE. UNDETAINED)0. _ ',b3``?,, �������i� -Z Lu p35-__ I 244' PIPE FLOW�� (J�i J\ _ /„ 43 APT -24 2� Ile E a CONCENTRATED FLOW '` , `, _ _ —_ _= — — ' I _ �•� \ \ \ , h� /UNPAVED ` .\ ` EXISTING ; JOB NO. � — ' \ \ — —4 — 0 /%' ' \ / - ` \ ` \\ ` ANALYSIS POINT 2, POND ;L; `L _ r'�k)\ .0241 .%� '`k SHEET NO m`s POST —DEVELOPED DRAINAGE MAP — C6.1 E L 7_24 7 24" LONG EPDXY COATED # _nD 8' SZING CALCULATION: BIORETENTION FACILITY 1 T(�)=1,567 CF REQUIRED FOREBAV VOLUME: 1,667 CF X 15%=235 CF Al STONE FILL PROVIDED FOREBAV VOLUME: 400 CF FOREBAY DIMENSIONS: 16X9' - EV=43].59 2-YR ELEV=43 V 11E ao YR ELEV 43B 90 II XXD WITH DOME GRATE 1 - TOP:43].50 CLEANOUT NV.OUT=431.0018'HDPE OVERFLOW STRUCTURTE MIN BLOPNTIO SANE 3BARKDMUOCCH 243'NO BSTONE 33 NO 57STONE BOTTOM ELEV: 432.00 0 0 0 4• ERFORATEO 15"HOPE SCHEDULE40 PVC UNDERDRAIN MIRAF1140N FILTER TO FABRIC OR EQUIVALENT. WIDE CEN UN ERDRAON NOTES OFILTMEDIADEPTH SHALL BE THE MINIMUM DEPTH AF]ERASETTLING PERIOD OF THREE DAYS. SIZING CALCULATION: DRAINAGE AREA =0.83 ACRES R,2=0.52 MANAGED TURF: 0.53 ACRES T(v)=1,567CF IMPERVIOUS: 0.30 ACRES DESIGN STORAGE DEPTH: (2' X 0.25)+(3' X 0.4)+0.50' PONDING = 2.2' SURFACE AREA REQUIRED: T(v) I DESIGN STORAGE DEPTH-1,567 / 2.2' = 712 SF SURFACE AREA PROVIDED: 11 69_BE BI SMENTION FACILITY 1 DETAIL (LEVEL 1) NO SCALE STORMWATER NARRATIVE THIS PROJECT INCLUDES THE DEMOLITION OF EXISTING STRUCTURES AND IMPERVIOUS SURFACES SURROUNDING THE EXISTING KESWICK HALL ALONG WITH THE EXPANSION OF THE EXISTING CENTRAL ENERGY PLANT. A BIORETENTION FACILITY WILL BE INSTALLED, ADJACENT TO THE CENTRAL ENERGY PLANT, IN ORDER TO MEET ALL STORMWATER QUANTITY REQUIREMENTS FOR ANALYSIS POINT 1. THIS BIORETENTION FACILITY 1HAS BEEN SIZED TO MEET THE DEMAND OF FUTURE SITE IMPROVEMENTS (SEE PLANS TITLED -KESWICK HALL ADDITIONS AND SITE IMPROVEMENTS). ENERGY BALANCE AND CHANNEL PROTECTION FOR THIS ANALYSIS POINT ARE IN COMPLIANCE (SEE CALCULATION BELOW). STORMWATER QUANTITY REQUIREMENTS FOR ANALYSIS POINT 2 WILL BE MET THROUGH THE REDUCTION IN IMPERVIOUS AREA. ENERGY BALANCE AND CHANNEL PROTECTION FOR THIS ANALYSIS POINT ARE IN COMPLIANCE (SEE CALCULATION BELOW). STORMWATER RUNOFF TO ANALYSIS POINT 3 (GOLF COURSE) SHEET FLOWS FROM THE PROPOSED LIMITS OF DISTURBANCE ONTO THE GOLF COURSE. STORMWATER QUANTITY REQUIREMENTS FOR ANALYSIS POINT 3 WILL BE MET THROUGH THE REDUCTION IN IMPERVIOUS AREA. ENERGY BALANCE AND CHANNEL PROTECTION FOR THIS ANALYSIS POINT ARE IN COMPLIANCE (SEE CALCULATION BELOW). STORM WATER QUALITY WILL BE ADDRESSED THROUGH THE INSTALLATION OF BIORETENTION FACILITY 1. THIS BMP WILL PROVIDE A SURPLUS PHOSPHORUS REMOVAL OF 0.05 LBIYR. THIS SURPLUS WILL BE CREDITED ON FUTURE SITE IMPROVEMENTS (SEE PLANS TITLED "KESWICK HALL ADDITIONS AND SITE IMPROVEMENTS"). WATER QUANTITY ANALYSIS POINT 1 PRE AREA 1-1 TO ANALYSIS POINT 1 (OFFSITE) AREA =0.49 ACRES 0.18 ACRES (IMPERVIOUS) 0.31 ACRES (MANAGED TURF) Q (CFS) V (AC -FT) 1 YEAR 1.3] D.O6B 2 YEAR 1.80 10YEAR 3.07 PRE AREA 1-2 TO ANALYSIS POINT 1 (ONSITE) AREA= 0.34 ACRES 0.01 ACRES (IMPERVIOUS) 0.33 ACRES (MANAGED TURF) Q (CFS) V (AC -FT) 1 YEAR 0.72 0.035 2 YEAR 1.00 10YEAR 1.86 PRE AREA 1-3 TO ANALYSIS POINT 1 (ONSITE) AREA-0.11 ACRES 0.25 ACRES (IMPERVIOUS) 0.46 ACRES (MANAGED TURF) Q (CFS) V (AC -FT) 1 YEAR 1.84 0.094 2 YEAR 2.45 10YEAR 4.24 AREAS COMBINED (PRE AREA 1-2+ PRE AREA 1-3) Q (CFS) 1 YEAR 2.56 2 YEAR 3.45 10YEAR 6.10 TOTAL ARES COMBI NED (PRE AREA 1-1+PRE AREA 11 PRE AREA 1-3) Q (CFS) 1 YEAR 3.93 2 YEAR 5.2A 10YEAR 9.17 POST AREA 14 TO ANALYSIS POINT 1 (OFFSITE, DETAINED) AREA =0.49 ACRES D.18 ACRES (IMPERVIOUS) 0.31 ACRES (MANAGED TURF) Q (CFS) V (AC -FT) 1 YEAR 1.3] 0.068 2 YEAR 1.80 10YEAR 3.07 POST AREA 1-5 TO ANALYSIS POINT 1 (ONSITE, DETAINED) AREA= 0.34 ACRES 0.12 ACRES (IMPERVIOUS) D.18 ACRES (MANAGED TURF) 0.04 ACRES (BIORETENTION) Q (CFS) V (AC -FT) 1 YEAR 0.93 0.045 2 YEAR 1.23 10YEAR 2.13 BIORETENTION AREA 1 (POST AREA 14+ POST AREA 1S) Q (CFS) 1 YEAR 0.04 2 YEAR 0.15 10YEAR 2.46 POST AREA 1-6 TO ANALYSIS POINT 1 (ONSITE, UNDETAINED) AREA =0.69 ACRES 0.21 ACRES (IMPERVIOUS) 0.48 ACRES (MANAGED TURF) Q (CFS) V (AC -FT) 1 YEAR 1.]2 1- 2 YEAR 2.30 10YEAR 4.04 AREAS COMBINED (BIORETENTION 1 + POST AREA 1-6) Q (CFS) 1 YEAR 1.]2 2 YEAR 2.30 10YEAR 5.67 `CEVELOFED< 0.90'(OPREnLVELOPEo RVPRE.NL-Io .uRV-lv .PED Q MAX (1-YR) 5 0.90'(2.56 - 0.129) ACIFT / (0.132) ACIFT = 2.25 CFS 2.25 CFS+ 1.37 CFS (AREA 14) = 3.62 CFS Q(1-YR) POST -DEVELOPED =1.72 CFS OK FLOOD PROTECTION: POST -DEVELOPED Q 5 PRE -DEVELOPED Q OK 2.30 CFS(POST-DEVELOPED QI 55.23 CFS(PRE-DEVELOPEDQ2) OK 5.67 CFS (POST -DEVELOPED 00019.16 CFS (PRE -DEVELOPED 0,0 WATER QUANTITY ANALYSIS POINT 2 PRE AREA 2-1 TO ANALYSIS POINT 2 (ONSITE) AREA= 0.97 ACRES 0.19 ACRES (IMPERVIOUS) 0.]8 ACRES (MANAGED TURF) Q (CFS) V LACFT) 1 YEAR 2.38 0.117 2 YEAR 3.21 10YEAR 5.]1 DRAINAGE AREA ANALYSIS (POSTDEVELOPED) POST AREA 2-2 TO ANALYSIS POINT 2 (ONSITE, UNDETAI NED) AREA= 0.97 ACRES 0.00 ACRES (IMPERVIOUS) 0A7'RES (MANAGED TURF) Q (CFS) V (AC -FT) 1 YEAR 1.96 0.0% 2 YEAR 2.]4 10YEAR 5.18 Qo..Lo 50.90•((lp�oe.E l.o'RVP�..L.PEo)RVOEVELae. OK 1.96 CFS 10.90'(2.3W 0.117)1(0.0%) = 2.61 CFS FLOOD PROTECTION: POST -DEVELOPED Q 5 PRE -DEVELOPED Q OK 2.74 CFS(POST-DEVELOPEDOs) 13.21 CFS(PRE-DEVELOPEDOs) OK 5.18 CFS(POST-DEVELOPED QU 5.71 CFS(PRE-DEVELOPED CU WATER QUANTITY ANALYSIS POINT 3 PRE AREA 3-1 TO ANALYSIS POINT 3 (ONSITE) AREA= 0.26 ACRES 0.08 ACRES (IMPERVIOUS) 0.18 ACRES (MANAGED TURF) Q (CFS) V LACFT) 1 YEAR 0.36 0.0. 2 YEAR 0.48 10YEAR 0.85 DRAINAGE AREA ANALYSIS (POSTDEVELOPED) POST AREA 3-2 TO ANALYSIS POINT 2 (ONSITE, UNDETAI NED) AREA= 0.29 ACRES 0.00 ACRES (IMPERVIOUS) 0.28 ACRES (MANAGED TURF) Q (CFS) V (AC -FT) 1 YEAR OZ8 0.0298 2 YEAR 0.40 10YEAR 0.78 CHANNEL PROTECTION (ENERGY BALANCE): %EVELOPEO 50.90'(%Rl.-.1O D'RVPUE-DEFELOPED)84VOEVELOPEO OK 0.28 CFS 50AW(0.36' 0.034)/(0.028)=0.39 CFS FLOOD PROTECTION: POST -DEVELOPED Q 5 PRE -DEVELOPED Q OK 0.40 CFS(POST-DEVELOPED 02) 50.48 CFS(P-DEVELOPED Q2) OK 0.78 CFS (POST -DEVELOPED QQo) 50.85 CFS(PRE-DEVELOPED Q,) WATER QUALITY ANALYSIS SITE DATA PRE DEVELOPED AREA IMPERVIOUS = 0.53 ACRES MANAGED TURF=1.]5ACRES PRE DEVELOPMENT LOAD (TP) (LBNR) = 2.15 POST DEVELOPED AREA IMPERVIOUS = 0.33 ACRES MANAGED TURF =1.98 ACRES POST DEVELOPMENT LOAD (TP) (LBNR) =1.83 MAXIMUM PERCENT REDUCTION REQUIRED FOR REDEVELOPMENT = 20% TOTAL LOAD REDUCTION REQUIRED (LBNR) = 4.05 LBIYR TOTAL LOAD REDUCTION PROPOSED (LBNR) = 0.05 LEA R 'SURPLUS LOAD REDUCTION TO BE ALLOTTED FOR FUTURE SITE DEVELOPMENT R . ,9aNa.taa<x.>aa.. ,t. V21Ab 0E •• • z 0 E f DATE 3-26-2018 DRAWN BY 1. SANDERS DESIGNED BY A. ALLISON CHECKED BY C. SHIFFLETT 40241 C6.2 L Site Information P—D-1,p— P,,j,& (TmW,,nt V,I,,, and I,,&) St—ta, ftat Mena ge..OPrattitts IRR R ... ffftd,W,,l P.— P—l" In`= P.,-- Ynn.. Y=-- Suer Bu A. — 1.1 In Tl--n-r­.d(­ AZ Z.1. AM'avn —Aavn 'R' WmI n, Site Summary In. - - - - - - - - - - - - - - - Site C..pli..- Summary Drainage Area Summary - I— TP RED —ON —EDED BY 0.05 LB/YEAR " T1 =1., P (6') (1-1 • (A z 0 3-26-2018 J. SANDERS DESIGNED BY A. ALLISON CHECKED BY C. SHIFFLETF SCALE NA 0 0 z LU U) IN z < Qr LU t o P ao LU z Z, LU aU LU < z LU < z LU LU LU zo U � C) < ).0 '40"'2'41 L C6.3 SCALEA -20' �gALTHO 0 20' T L1a No. 010204850] ONAL O 602 �0 / // 601 O O v�. - �� LEGEND \ ` h CRITICAL -'''- - SLOPES(]YP.) 616 ° D.04\ I ����* DRAINAGE DIVIDE 612 O 0.041 j ® i AC 0.9LIMITSOF nti SURVEY CRITICAL( 60 OP 11 SLOPES /1'P7 - V ` V Be �� G/o/ i \, \ / — c - - / Ac ass \ \�� `� \ •` \ _' _' - 1 o n m DATE 3-26-2018 DRAWN BY J. SANDERS UOA� /� `QY \1��ce��_� ��' y- \ \`� � // - • DESIGNED BY / / �1 \ '/ - .. \\ 4 \ \ — / - - • A. ALLISON / CHECKED BY / �i \`ry' \ _� _ \\ \ _ ^� I ' I\ „ • C. SNIFFLE- SG4LE '\ `� \ \ \ • AS SHOWN' .55 aj I l I o fio] \ \ \ \\ \ • O • I\\\ \ i O . -'JOINT / '&A-CCESS EAS /! \ \� z / OB. 12V,, PG ° APPROX LOCATION \ \ ` \ -/. O \ � . 21'UTILITY EASEMEN \\ OB. 1282 PG.430 O L z< e4 a 3-��`\ of w l7 1 amass-� �� 4se As]�.� ;' ` A� _ `'moo A `�`A V - A (/'''�`\ Z .� -46 CL ° // 4�'c9\ /( '� \ �\\ �rloL�y/ �./ \ `ice \�• \ \ y\\ ''/�'�'/ ���''`/�/I - - (D a 'eu LU Lu �§ LU 71 30i IAITARVMN,' �INy IN=44&]3 put a3zss I v 1 ACCESS EASEMENT I I OB. 1282, PG AMLU y/g Ytr ITARY SEWER 730 / JOB NO �> /� -'i i/l 40241 ���; L Section 6. Pollution Prevention Plan. (reference County Code 17-404 and State Regulation 9VAC25-880-70 part II section A.4) A. Plan showing pollution activities and prevention practices (Provide a reduced I Ix17 copy of a site plan on which all of the following activity locations are clearly marked. Keep this plan up-to-date with ongoing site changes and inspections.) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County u. hources of ronutants. locations. ana Pollutant, or Pollutant Location on site Prevention Practices, Generating Activity Control Measures C. Sources of Pollutants continued. Common activities and minimum control and prevention practices Pollutant, or Pollutant Location on site Prevention Practices, Generating Activity Control Measures Follow Erosion and Sediment Control Clearing, grading, excavating, and un- Land disturbance area Plan. Dispose of clearing debris at stabilized areas acceptable disposal sites. Seed and mulch, or sod within 7 days of land clearing Cover storm drain inlets and use drip pans Paving operations Roads and driveways and absorbent/oil dry for all paving machines to limit leaks ands ills Concrete washout shall occur in area Direct concrete wash water into a leak - Concrete washout and adjacent to the construction entrance as proof container or leak -proof settling basin cement waste designated on the Pollution Prevention that is designed so that no overflows can Plan. occur Enclose or cover material storage areas. Mix paint indoors in a containment area or Structure construction, stucco, Structures in a flat unpaved area. Prevent the painting, and cleaning discharge of soaps, solvents, detergents and wash water, paint, form release oils and curing com ounds. Dewatering if necessary when Water shall be filtered, settled or similarly Dewatering operations converting culvert inlet protection treated prior to discharge as shown on shown on plans plan, Designated areas for material delivery and Material delivery and storage Adjacent to construction entrance and storage. Placed near construction construction trailer. entrances, away from waterways and drainage paths Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Pollutant, or Pollutant Location on site Prevention Practices, Generating Activity Control Measures Material use during building process Building areas Follow manufacturer's instructions. MSDS's attached. Waste collection area will not receive a substantial amount of runoff from upland areas and does not drain directly to a waterway. Containers have lids covered before periods of rain, or are in a covered Solid waste disposal As provided by contractor area. Scheduled collection to prevent overfilling. MATERIALS NOT TO BE BURIED ON -SITE Convenient and well -maintained portable sanitary facilities will be provided, and Sanitary waste Current locations shown on plan located away from waterways or inlets. Such facilities shall be regularly maintained. Apply fertilizers in accordance with Landscaping operations Landscape areas shown on plan manufacturer's recommendations and not during rainfall events To be treated in a sediment basin or better Wash area is located at the construction control as specified on plan. Minimize Wash Waters entrance. Adjacent diversion dike will the discharge of pollutants from divert wash water to sediment trap. e ui ment and vehicle washing Vehicle and equipment washing Designated areas and details shown on Provide containment and filtering for all plan wash waters per the plan Minimization of exposure to precipitation and stormwater. Minimize the exposure of building materials, building products, construction wastes, trash, landscape materials, fertilizers, pesticides, herbicides, detergents, sanitary waste, and other materials present on the site to precipitation and to stormwater. (Identify all non-stormwater discharges to occur on your site. Keep this plan up-to-date with ongoing site changes and inspections. See CGP, 9VAC25-880-70 section E for examples of non-stormwater discharges.) D. Non-stormwater discharges Discharge Pollutants or Pollutant Constituents Location on Site Dust control water Sediment As shown on plan Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Discharge Pollutants or Pollutant Location on Site Constituents E. Persons responsible for pollution prevention practices (Provide the names and contact information for all persons responsible for prevention practices as listed above.) Mr. Eddie Hidalgo 708 Bainbridge Street Richmond, VA 23224 804.233.6921 F. Response and reporting practices Minimize discharges from spills and leaks. Minimize the discharge of pollutants from spills and leaks and implement chemical spill and leak prevention and response procedures as follows. Respond to all spills, leaks and discharges as follows; Materials and equipment necessary for oil or chemical spill cleanup will be kept in the temporary material storage trailer onsite. Equipment will include, but not be limited to, brooms, dust pans, mops, rags, gloves, goggles, kitty litter, sand, saw dust, and plastic and metal trash containers. All oil or other chemical spills will be cleaned up immediately upon discovery. Identify and stop source of discharge. Use absorptive materials to soak up as much chemical as possible. Place all contaminated material in trash containers for disposal. Report all spills, leaks and discharges as follows; (Provide detailed response and reporting practices according to 9VAC25-880-70, Part II, section A.4.e.) Reports will be made to the following: Virginia Department of Emergency Management Emergency Operations Center (EOC) Phone: (800) 468-8892 Spills large enough to reach the storm sewers will be reported to the National Response Center at 1-800-424-8802. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County G. Pollution Prevention Awareness (Describe training and procedures to provide awareness and compliance for all measures in this document; waste management, wash waters, prevention measures, etc.) The registered land disturber shall oversee all construction activities to implement and maintain pollution prevention measures. As such training and procedures shall be provided by contractor for each worker on site before they begin land disturbing activities. Training on implementation of erosion and sediment control devices/procedures must be provided by registered land disturber each time a new E&SC procedure is constructed. 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This site discharges to impaired waters as detailed on the following sheets. Enhanced inspection frequency is required as outlined below: (1) Inspections shall be conducted at a frequency of (i) at least once every four business days or (ii) at least once every five business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to surface waters identified as impaired or for which a TMDL wasteload allocation has been established and approved prior to the term of this general permit. (3) 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; (4) Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Bacteria TMDL Development for the Rivanna River Mainstem, North Fork Rivanna River, Preddy Creek and Tributaries, Meadow Creek, Mechums River, and Beaver Creek Watersheds Submitted by Virginia Department of Environmental Quality Prepared by THE Louis Berger Group, INC. 2445 M Street, NW Washington, DC 20037 Final Report March 2008 Executive Summary This report presents the development of bacteria TMDLs for the Rivanna River mainstem, North Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek watersheds. These water bodies were listed as impaired on Virginia's 303(d) Total Maximum Daily Load Priority List and Reports (DEQ, 1998, 2002, 2004, 2006) because of violations of the state's water quality standards for E. coli and for fecal coliform bacteria. Description of the Study Area The bacteria impaired Rivanna River watershed is located within the borders of Albemarle, Greene, Nelson, and Orange counties. The city of Charlottesville is also within the watershed's boundaries. All impaired streams are located in the Rivanna River watershed (USGS Cataloging Unit 02080204). The entire Rivanna River bacteria impaired watershed is approximately 321,877 acres. Impairment Description Segments of the Rivanna River mainstem, North Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek were listed as bacteria impaired on Virginia's 2002, 2004, and/or 2006 303(d) Total Maximum Daily Load Priority List and Reports due to violations of the state's water quality standard for fecal coliform bacteria and/or E. coli. The impaired segments are located in the Rivanna River Basin in central Virginia. The watershed is located in the hydrologic unit (HUC) 02080204. The impaired watersheds include the City of Charlottesville and portions of Albemarle, Greene, Orange, and Nelson counties. The impaired segment of the Rivanna River (VAV-H28R-RVNO1A00) extends 5.28 miles along the mainstem from the confluence of the North Fork Rivanna River to Moores Creek. This segment of the Rivanna River was first listed on the 2006 305(b)/303(d) Water Quality Assessment Integrated Report for exceedances of the E. coli standard. During the 2006 assessment period (January 200 through December 2004), 2 Executive Summary E-1 out of 9 samples (22%) collected at listing station 2-RVN037.54 exceeded the E. coli criterion of 235 cfu/100 ml. The impaired segment of Beaver Creek (VAV-H23R-BVR02AO4) extends 4.8 miles from its headwaters to Beaver Creek Reservoir. This segment of Beaver Creek was first listed on the 2004 305(b)/303(d) Water Quality Assessment Integrated Report for exceedances of the fecal coliform standard. During the 2004 assessment period (January 1998 through December 2002), 2 out of 16 fecal coliform samples (13%) collected at listing station 2-BVR005.70 exceeded the fecal coliform standard instantaneous of 400 cfu/100 MI. This segment remained on the 303(d) list in the 2006 Water Quality Assessment Report. The impaired segment of Meadow Creek (VAV-H28R-MWCOIA00) extends 4.01 miles from its headwaters to the confluence of the Rivanna River. This segment of Meadow Creek was first listed on the 2002 303(d) Water Quality Assessment Integrated Report for exceedances of the fecal coliform standard. During the 2002 assessment period (January 1996 through December 2000), 4 out of 23 fecal coliform samples (17%) collected at listing station 2-MWC000.60 exceeded the fecal coliform instantaneous standard of 400 cfu/100 MI. The impaired segment of the Mechums River (VAV-H23R-MCMOIA00) extends 10.44 miles from the confluence of the Lickinghole Creek to the Moormans River. This segment of the Mechums River was first listed on the 2006 305(b)/303(d) Water Quality Assessment Integrated Report for exceedances of the E. coli standard. During the 2006 assessment period (January 2000 through December 2004), 2 out of 18 samples (I I%) collected at listing station 2-MCM005.12 exceeded the E. coli criterion of 235 cfu/100 MI. The impaired segment of the North Fork Rivanna River (VAV-H27R-RRNO 1 A00) extends 10.38 miles from the public water intake to the confluence of the Rivanna River. This segment of the North Fork Rivanna River was first listed on the 2006 305(b)/303(d) Water Quality Assessment Integrated Report for exceedances of the E. coli standard. During the 2006 assessment period (January 2000 through December 2004), 3 out of 9 Executive Summary E-2 samples (33%) collected at listing station 2-RRN002.19 exceeded the E. coli criterion of 235 cfu/100 ml. The impaired segment of Preddy Creek and its tributaries (VAV-H27R-PRDOIA00) extends 25.96 miles from its headwaters to the confluence of the Rivanna River. This segment of Preddy Creek was first listed on the 2006 305(b)/303(d) Water Quality Assessment Integrated Report for exceedances of the E. coli standard. During the 2006 assessment period (January 2000 through December 2004), 3 out of the 9 samples (33%) collected at listing station 2-PRD000.21 exceeded the E. coli criterion of 235 cfu/100 ml. During this same period, only 1 out of the 9 samples (11%) collected at listing station 2- PRD004.42 exceeded the E. coli criterion of 235 cfu/100 ml. Applicable Water Quality Standards At the time of the initial listing of Rivanna River mainstem, North Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek segments, the Virginia Bacteria Water Quality Standard was expressed in fecal coliform bacteria; however, the bacteria water quality standard has recently been changed, and is now expressed in E. coli. Virginia's bacteria water quality standard currently states that E. coli bacteria shall not exceed a geometric mean of 126 E. coli counts per 100 mL of water for two or more samples within a calendar month, or an E. coli concentration of 235 counts per 100 mL of water at any time. However, the loading rates for watershed - based modeling are available only in terms of the previous standard, fecal coliform bacteria. Therefore, the TMDL was expressed in E. coli by converting modeled daily fecal coliform concentrations to daily E. coli concentrations using an in -stream translator. This TMDL was required to meet both the geometric mean and instantaneous E. coli water quality standard. Watershed Characterization The land use characterization for the Rivanna River watershed was based on a combination of land cover data from the National Land Use Land cover data set (NLCD) using 2001 reference data and the Virginia Department of Forestry 2005 land use data. Executive Summary E-3 Dominant land uses in the watershed are forest (64%) and agriculture (21%). These account for a combined 85% of the total land area in the watershed The potential sources of fecal coliform include run-off from livestock grazing, manure applications, industrial processes, residential, and domestic pets waste. Some of these sources are driven by dry weather and others are driven by wet weather. The potential sources of fecal coliform in the watershed were identified and characterized. These sources include permitted point sources, failed septic systems and straight pipes, livestock, wildlife, and pets. TMDL Technical Approach The Hydrologic Simulation Program -Fortran (HSPF) model was selected and used as a tool to predict the in -stream water quality conditions of the delineated watershed under varying scenarios of rainfall and fecal coliform loading. HSPF is a hydrologic, watershed -based water quality model. The results from the model were used to develop the TMDL allocations based on the existing fecal coliform load. Basically, this means that HSPF can explicitly account for the specific watershed conditions, the seasonal variations in rainfall and climate conditions, and activities and uses related to fecal coliform loading. The modeling process in HSPF starts with the following steps: 0 delineating the watershed into smaller subwatersheds • entering the physical data that describe each subwatershed and stream segment • entering values for the rates and constants that describe the sources and the activities related to the fecal coliform loading in the watershed The Rivanna River watershed was delineated into 41 smaller subwatersheds to represent the watershed characteristics and to improve the accuracy of the HSPF model. Of these 41 representing the entire Rivanna River watershed, 28 were within the bacteria impaired watershed. This delineation was based on topographic characteristics, and was created using a Digital Elevation Model (DEM), stream reaches obtained from the National Hydrography Dataset (NHD), and stream flow and in -stream water quality data. Executive Summary E-4 Stream flow data were available from the U.S. Geological Survey (USGS). Weather data were obtained from the National Climatic Data Center (NCDC). The data used in the model include meteorological data (hourly precipitation) and surface airways data (including wind speed/direction, ceiling height, dry bulb temperature, dew point temperature, and solar radiation). The period of January 1998 to December 2006 was used for HSPF hydraulic calibration and validation. The hydrologic calibration parameters were adjusted until there was a good agreement between the observed and simulated stream flow, thereby indicating that the model parameterization is representative of the hydrologic characteristics of the study areas. The model results closely matched the observed flows during low flow conditions, base flow recession and storm peaks. Instream water quality data for the calibration was retrieved from DEQ, and was evaluated for potential use in the set-up, calibration, and validation of the water quality model. The existing fecal coliform loading was calculated based on current watershed conditions. Since Virginia has recently changed its bacteria standard from fecal coliform to E. coli the modeled fecal coliform concentrations were changed to E. coli concentrations using a translator. TMDL Calculations The TMDL represents the maximum amount of a pollutant that the stream can receive without exceeding the water quality standard. The load allocation for the selected scenarios was calculated using the following equation: Where, TMDL = Y, WLA +Y, LA + MOS WLA = wasteload allocation (point source contributions); LA = load allocation (non -point source allocation); and MOS = margin of safety. Executive Summary E-5 The margin of safety (MOS) is a required component of the TMDL to account for any lack of knowledge concerning the relationship between effluent limitations and water quality. The MOS was implicitly incorporated in this TMDL. Implicitly incorporating the MOS required that allocation scenarios be designed to meet a 30-day geometric mean E. coli standard of 126 cfu/100 mL and the instantaneous E. coli standard of 235 cfu/100 mL with 0% exceedance. Typically, there are several potential allocation strategies that would achieve the TMDL endpoint and water quality standards. A number of load allocation scenarios were developed to determine the final TMDL load allocation scenario. For the hydrologic period of January 2000 to December 2006, fecal coliform loading and instream fecal coliform concentrations were estimated for the various scenarios using the developed HSPF model of the Rivanna River mainstem, North Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek. After using the instream translator, the TMDL allocation plan was developed to meet geometric mean and instantaneous E. coli standards. Based on the load -allocation scenario analyses, the daily TMDL allocation plans that will meet the 30-day E. coli geometric mean water quality standard of 126 cfu/100 mL and the instantaneous E. coli water quality standard of 235 cfu/100 mL are presented in Table E-1. Executive Summary E-6 Table E-1: Allocation i.di i for North Fork Rivanna River, Preddy Creek and tributaries,River, i Beaver Creek Watershed Human Sources Livestock Agricultural Wildlife (failed septic (Direct and urban (Direct systems and Instream non point Instream straight pipes) Loading) sources Loading) Rivanna River 100% 100% 95% 76% VAV-H28R-RVN01 A00 North Fork Rivanna River 100% 100% 95% 92% VAV-H27R-RRNO 1A00 Preddy Creeks and Tributaries 100% 100% 95% 72% VAV-H27R-PRDOIA00 Meadow Creek 100% 100% 95% 48% VAV-H28R-MWCOIA00 Mechums River 100% 100% 95 /0 o 0 76 /o VAV-H23R-MCMOIA00 Beaver Creek 100% 100% 95% 66% VAV-H23R-BVR02A04 The summaries of the daily bacteria TMDL allocation plan loads for the Rivanna River mainstem, North Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek are presented in Table E-2. Table E-3 summarizes the yearly bacteria TMDL allocation plan loads. Table E-2: Rivanna River mainstem, North Fork Rivanna River, Preddy Meadow i Plan Loads d. WLA (Point LA MOS Watershed Sources) (Nonpoint (Margin of TMDL sources) safety) Rivanna River 3.72E+10 4.11E+11 Implicit 4.48E+11 VAV-H28R-RVNO1 A00 North Fork Rivanna River 9.88E+09 1.62E+I I Implicit 1.72E+l 1 VAV-H27R-RRNO 1 A00 Preddy Creeks and Tributaries 6.67E+08 5.91E+10 Implicit 5.97E+10 VAV-H27R-PRDO 1 A00 Meadow Creek 4.08E+10 2.36E+10 Implicit 6.44E+10 VAV-H28R-MWCOIA00 Mechums River 9.06E+07 3.50E+10 Implicit 3.51E+10 VAV-H23R-MCM01A00 Beaver Creek 2.60E+08 1.12E+10 Implicit 1.14E+10 VAV-H23R-BVR02A04 Executive Summary E-7 Table E-3: Rivanna River mainstern, North Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek TMDL Allocation Plan Loads for i WLA (Point LA MOS Watershed Sources) (Nonpoint (Margin of TMDL sources) safety) Rivanna River 4.93E+12 4.11E+13 Implicit 4.60E+13 VAV-H28R-RVNO1 A00 North Fork Rivanna River 2,15E+12 1.54E+13 Implicit 1.75E+13 VAV-H27R-RRNO 1 A00 Preddy Creeks and Tributaries 2.43E+11 5.58E+12 Implicit 5.83E+12 VAV-H27R-PRDO 1 A00 Meadow Creek 3.89E+12 2.23E+12 Implicit 6.12E+12 VAV-H28R-MWCOlA00 Mechums River 3.31E+10 3.31E+12 Implicit 3.34E+12 VAV-H23R-MCMO 1A00 Beaver Creek 3.29E+10 1.07E+12 Implicit 1.10E+12 VAV-H23R-BVR02A04 TMDL Implementation The Commonwealth intends for this TMDL to be implemented through best management practices (BMPs) in the watershed. Implementation will occur in stages. The benefits of staged implementation are: 1) as stream monitoring continues to occur, it allows for water quality improvements to be recorded as they are being achieved; 2) it provides a measure of quality control, given the uncertainties that exist in any model; 3) it provides a mechanism for developing public support; 4) it helps to ensure the most cost effective practices are implemented initially, and 5) it allows for the evaluation of the TMDL's adequacy in achieving the water quality standard. Table E-4 provides load reduction targets for staged implementation achieving a 10% instantaneous standard violation reduction for each TMDL watershed. While section 303(d) of the Clean Water Act and current EPA regulations do not require the development of TMDL implementation plans as part of the TMDL process, they do require reasonable assurance that the load and wasteload allocations can and will be implemented. Additionally, Virginia's 1997 Water Quality Monitoring Information and Restoration Act (the "Act") directs the State Water Control Board to "develop and implement a plan to achieve fully supporting status for impaired waters" (Section 62.1- Executive Summary E-8 44.19.7). The Act also establishes that the implementation plan shall include the date of expected achievement of water quality objectives, measurable goals, corrective actions necessary and the associated costs, benefits and environmental impacts of addressing the impairments. EPA outlines the minimum elements of an approvable implementation plan in its 1999 "Guidance for Water Quality -Based Decisions: The TMDL Process." The listed elements include implementation actions/management measures, timelines, legal or regulatory controls, time required to attain water quality standards, monitoring plans, and milestones for attaining water quality standards. Once developed, DEQ intends to incorporate the TMDL implementation plan into the appropriate Water Quality Management Plan (WQMP), in accordance with the Clean Water Act's Section 303(e). In response to a Memorandum of Understanding (MOU) between EPA and DEQ, DEQ also submitted a draft Continuous Planning Process to EPA in which DEQ commits to regularly updating the WQMPs. Thus, the WQMPs will be, among other things, the repository for all TMDLs and TMDL implementation plans developed within a river basin. Executive Summary E-9 Table Fork Rivanna River, Preddy Creek and tributaries, Meadow Creek, Mechums River, and Beaver Creek TMDL Stage 1 Ilocation Scenario 1 I% Instantaneous StandardViolation) violation of violation of Failed Direct NPS NPS Direct GM Inst. Watershed Septics & Livestock (Agricultural) (Urban) Wildlife standard standard Pipes 126 235 #/100ml #/100ml Rivanna River VAV-H28R- 100% 92% 0% 0% 0% 14.7% 10% RVN01AOO North Fork Rivanna River 100% 100% 50% 58% 0% 21% 10% VAV-H27R- RRNO 1 AO0 Preddy Creeks and Tributaries 100% 100% 50% 48% 0% 36.8% 10% VAV-H27R- PRDO 1 AO0 Meadow Creek VAV-H28R- 100% 100% 0% 23% 0% 27% 10% MWC01A00 Mechums River VAV-H23R- 100% 100% 55% 0% 0% 33% 10% MCMO 1 A00 Beaver Creek VAV-H23R- 100% 95% 0% 0% 0% 31.4% 10% BVR02AO4 Executive Summary E-10 Section 8. Qualified personnel The following personnel are responsible for inspections; (Provide the name, telephone number, and qualifications of the qualified personnel conducting inspections.) Mr. Eddie Hidalgo Project Superintendent W.M. Jordan Company 708 Bainbridge St Richmond, VA 23224 804.233.6921 Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 9. Signed Certification (Provide certification according; to 9VAC25-870-370. For purposes of plan review and approvals, this certification should be the owner of the property, the sarne signature as appears on the bonds and applications. Another operator can be designated on the delegation ofauthority form to follow.) CERTIFICATION "I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." Owner/Operator Name: Eddie Hidalgo Company: W M Jordan Company Title: Project Superintendent Signature: Date: 08/22/20 Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County Section 10. Delegation of authority. t Provide the persons or positions with authority to sign inspection reports or to modify the stormwater pollution prevention plan. A formal. signed delegation of authority is needed.) Delegation of Authority I,— _ (name), hereby designate the person or specifically described position below to be a duly authorized representative for the purpose of overseeing compliance with environmental requirements, including the Construction General Permit, at the Keswick Hall construction site. The designee is authorized to sign any reports, stormwater pollution prevention plans and all other documents required by the permit. Eddie Hldalao (name of person or position) 708 Bainbridge Street (company) Richmond _ _ (address) VA 23224 (city, state, zip) _ 804-233-6921 (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: Eddie Hidalgo Company: W M Jordan Company Title: Signature: Date: Eddie Hidalgo 08/22 Issued — 10/2014 Stormwater Pollution Prevention Plan (S WPPP) Albemarle County Section 11. General permit copy (Provide a copy of the construction general permit, 9VAC25-880) Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County COMMONWEALTH of VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY General Permit No.: VAR10 Effective Date: July 1, 2014 Expiration Date: June 30, 2019 GENERAL VPDES PERMIT FOR DISCHARGES OF STORMWATER FROM CONSTRUCTION ACTIVITIES AUTHORIZATION TO DISCHARGE UNDER THE VIRGINIA STORMWATER MANAGEMENT PROGRAM AND THE VIRGINIA STORMWATER MANAGEMENT ACT In compliance with the provisions of the Clean Water Act, as amended, and pursuant to the Virginia Stormwater Management Act and regulations adopted pursuant thereto, operators of construction activities are authorized to discharge to surface waters within the boundaries of the Commonwealth of Virginia, except those specifically named in State Water Control Board regulations that prohibit such discharges. The authorized discharge shall be in accordance with this cover page, Part I - Discharge Authorization and Special Conditions, Part 11 - Stormwater Pollution Prevention Plan, and Part III - Conditions Applicable to All VPDES Permits as set forth herein. General Permit No.: VAR10 Page 1 of 23 PART I DISCHARGE AUTHORIZATION AND SPECIAL CONDITIONS A. Coverage under this general permit. 1. During the period beginning with the date of coverage under this general permit and lasting until the general permit's expiration date, the operator is authorized to discharge stormwater from construction activities. 2. This general permit also authorizes stormwater discharges from support activities (e.g., concrete or asphalt batch plants, equipment staging yards, material storage areas, excavated material disposal areas, borrow areas) located on -site or off -site provided that: a. The support activity is directly related to the construction activity that is required to have general permit coverage for discharges of stormwater from construction activities; b. The support activity is not a commercial operation, nor does it serve multiple unrelated construction activities by different operators; c. The support activity does not operate beyond the completion of the last construction activity it supports; d. The support activity is identified in the registration statement at the time of general permit coverage; e. Appropriate control measures are identified in a stormwater pollution prevention plan and implemented to address the discharges from the support activity areas; and f. All applicable state, federal, and local approvals are obtained for the support activity. B. Limitations on coverage. 1. Post -construction discharges. This general permit does not authorize stormwater discharges that originate from the site after construction activities have been completed and the site, including any support activity sites covered under the general permit registration, has undergone final stabilization. Post -construction industrial stormwater discharges may need to be covered by a separate VPDES permit. 2. Discharges mixed with nonstormwater. This general permit does not authorize discharges that are mixed with sources of nonstormwater, other than those discharges that are identified in Part I E (Authorized nonstormwater discharges) and are in compliance with this general permit. 3. Discharges covered by another state permit. This general permit does not authorize discharges of stormwater from construction activities that have been covered under an individual permit or required to obtain coverage under an alternative general permit. 4. Impaired waters and TMDL limitation. Discharges of stormwater from construction activities to surface waters identified as impaired in the 2012 § 305(b)/303(d) Water Quality Assessment Integrated Report or for which a TMDL wasteload allocation has been established and approved prior to the term of this general permit for (i) sediment or a sediment -related parameter (i.e., total suspended solids or turbidity) or (ii) nutrients (i.e., nitrogen or phosphorus) are not eligible for coverage under this general permit unless the operator develops, implements, and maintains a SWPPP that minimizes the pollutants of concern and, when applicable, is consistent with the assumptions and requirements of the approved TMDL wasteload allocations. In addition, the operator shall implement the following items: General Permit No.: VAR10 Page 2 of 23 a. The impaired water(s), approved TMDL(s), and pollutant(s) of concern, when applicable, shall be identified in the SWPPP; b. Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; c. Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and d. The applicable SWPPP inspection requirements specified in Part II F 2 shall be amended as follows: (1) Inspections shall be conducted at a frequency of (i) at least once every four business days or (ii) at least once every five business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to surface waters identified as impaired or for which a TMDL wasteload allocation has been established and approved prior to the term of this general permit. 5. Exceptional waters limitation. Discharges of stormwater from construction activities not previously covered under the general permit issued in 2009 to exceptional waters identified in 9VAC25-260-30 A 3 c are not eligible for coverage under this general permit unless the operator implements the following: a. The exceptional water(s) shall be identified in the SWPPP; b. Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; c. Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and d. The applicable SWPPP inspection requirements specified in Part II F 2 shall be amended as follows: (1) Inspections shall be conducted at a frequency of (i) at least once every four business days or (ii) at least once every five business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to exceptional waters. 6. There shall be no discharge of floating solids or visible foam in other than trace amounts. C. Commingled discharges. Discharges authorized by this general permit may be commingled with other sources of stormwater that are not required to be covered under a state permit, so long as the commingled discharge is in compliance with this general permit. Discharges authorized by a separate state or VPDES permit may be commingled with discharges authorized by this general permit so long as all such discharges comply with all applicable state and VPDES permit requirements. General Permit No.: VAR10 Page 3 of 23 D. Prohibition of nonstormwater discharges. Except as provided in Parts I A 2, 1 C, and I E, all discharges covered by this general permit shall be composed entirely of stormwater associated with construction activities. All other discharges including the following are prohibited: 1. Wastewater from washout of concrete; 2. Wastewater from the washout and cleanout of stucco, paint, form release oils, curing compounds, and other construction materials; 3. Fuels, oils, or other pollutants used in vehicle and equipment operation and maintenance; 4. Oils, toxic substances, or hazardous substances from spills or other releases; and 5. Soaps, solvents, or detergents used in equipment and vehicle washing. E. Authorized nonstormwater discharges. The following nonstormwater discharges from construction activities are authorized by this general permit when discharged in compliance with this general permit: 1. Discharges from firefighting activities; 2. Fire hydrant flushings; 3. Waters used to wash vehicles or equipment where soaps, solvents, or detergents have not been used and the wash water has been filtered, settled, or similarly treated prior to discharge; 4. Water used to control dust that has been filtered, settled, or similarly treated prior to discharge; 5. Potable water sources, including uncontaminated waterline flushings; 6. Routine external building wash down where soaps, solvents or detergents have not been used and the wash water has been filtered, settled, or similarly treated prior to discharge; 7. Pavement wash waters where spills or leaks of toxic or hazardous materials have not occurred (or where all spilled or leaked material has been removed prior to washing); where soaps, solvents, or detergents have not been used; and where the wash water has been filtered, settled, or similarly treated prior to discharge; 8. Uncontaminated air conditioning or compressor condensate; 9. Uncontaminated ground water or spring water; 10. Foundation or footing drains where flows are not contaminated with process materials such as solvents; 11. Uncontaminated excavation dewatering, including dewatering of trenches and excavations that have been filtered, settled, or similarly treated prior to discharge; and 12. Landscape irrigation. F. Termination of general permit coverage. 1. The operator of the construction activity shall submit a notice of termination in accordance with 9VAC25-880-60 to the VSMP authority after one or more of the following conditions have been met: General Permit No.: VAR10 Page 4 of 23 a. Necessary permanent control measures included in the SWPPP for the site are in place and functioning effectively and final stabilization has been achieved on all portions of the site for which the operator is responsible. When applicable, long term responsibility and maintenance requirements shall be recorded in the local land records prior to the submission of a notice of termination; b. Another operator has assumed control over all areas of the site that have not been finally stabilized and obtained coverage for the ongoing discharge; c. Coverage under an alternative VPDES or state permit has been obtained; or d. For residential construction only, temporary soil stabilization has been completed and the residence has been transferred to the homeowner. 2. The notice of termination should be submitted no later than 30 days after one of the above conditions in subdivision 1 of this subsection is met. Authorization to discharge terminates at midnight on the date that the notice of termination is submitted for the conditions set forth in subdivisions 1 b through 1 d of this subsection. Termination of authorizations to discharge for the conditions set forth in subdivision 1 a of this subsection shall be effective upon notification from the department that the provisions of subdivision 1 a of this subsection have been met or 60 days after submittal of the notice of termination, whichever occurs first. 3. The notice of termination shall be signed in accordance with Part III K of this general permit. G. Water quality protection. 1. The operator must select, install, implement and maintain control measures as identified in the SWPPP at the construction site that minimize pollutants in the discharge as necessary to ensure that the operator's discharge does not cause or contribute to an excursion above any applicable water quality standard. 2. If it is determined by the department that the operator's discharges are causing, have reasonable potential to cause, or are contributing to an excursion above any applicable water quality standard, the department, in consultation with the VSMP authority, may take appropriate enforcement action and require the operator to: a. Modify or implement additional control measures in accordance with Part II B to adequately address the identified water quality concerns; b. Submit valid and verifiable data and information that are representative of ambient conditions and indicate that the receiving water is attaining water quality standards; or c. Submit an individual permit application in accordance with 9VAC25-870-410 B 3. All written responses required under this chapter must include a signed certification consistent with Part III K. General Permit No.: VAR10 Page 5 of 23 PART II STORMWATER POLLUTION PREVENTION PLAN A stormwater pollution prevention plan (SWPPP) shall be developed prior to the submission of a registration statement and implemented for the construction activity, including any support activity, covered by this general permit. SWPPPs shall be prepared in accordance with good engineering practices. Construction activities that are part of a larger common plan of development or sale and disturb less than one acre may utilize a SWPPP template provided by the department and need not provide a separate stormwater management plan if one has been prepared and implemented for the larger common plan of development or sale. The SWPPP requirements of this general permit may be fulfilled by incorporating by reference other plans such as a spill prevention control and countermeasure (SPCC) plan developed for the site under § 311 of the federal Clean Water Act or best management practices (BMP) programs otherwise required for the facility provided that the incorporated plan meets or exceeds the SWPPP requirements of Part II A. All plans incorporated by reference into the SWPPP become enforceable under this general permit. If a plan incorporated by reference does not contain all of the required elements of the SWPPP, the operator must develop the missing elements and include them in the SWPPP. Any operator that was authorized to discharge under the general permit issued in 2009, and that intends to continue coverage under this general permit, shall update its stormwater pollution prevention plan to comply with the requirements of this general permit no later than 60 days after the date of coverage under this general permit. A. Stormwater pollution prevention plan contents. The SWPPP shall include the following items: 1. General information. a. A signed copy of the registration statement, if required, for coverage under the general VPDES permit for discharges of stormwater from construction activities; b. Upon receipt, a copy of the notice of coverage under the general VPDES permit for discharges of stormwater from construction activities (i.e., notice of coverage letter); c. Upon receipt, a copy of the general VPDES permit for discharges of stormwater from construction activities; d. A narrative description of the nature of the construction activity, including the function of the project (e.g., low density residential, shopping mall, highway, etc.); e. A legible site plan identifying: (1) Directions of stormwater flow and approximate slopes anticipated after major grading activities; (2) Limits of land disturbance including steep slopes and natural buffers around surface waters that will not be disturbed; (3) Locations of major structural and nonstructural control measures, including sediment basins and traps, perimeter dikes, sediment barriers, and other measures intended to filter, settle, or similarly treat sediment, that will be installed between disturbed areas and the undisturbed vegetated areas in order to increase sediment removal and maximize stormwater infiltration; (4) Locations of surface waters; General Permit No.: VAR10 Page 6 of 23 (5) Locations where concentrated stormwater is discharged; (6) Locations of support activities, when applicable and when required by the VSMP authority, including but not limited to (i) areas where equipment and vehicle washing, wheel wash water, and other wash water is to occur; (ii) storage areas for chemicals such as acids, fuels, fertilizers, and other lawn care chemicals; (iii) concrete wash out areas; (iv) vehicle fueling and maintenance areas; (v) sanitary waste facilities, including those temporarily placed on the construction site; and (vi) construction waste storage; and (7) When applicable, the location of the on -site rain gauge or the methodology established in consultation with the VSMP authority used to identify measurable storm events for inspection purposes. 2. Erosion and sediment control plan. a. An erosion and sediment control plan approved by the VESCP authority as authorized under the Erosion and Sediment Control Regulations (9VAC25-840), an "agreement in lieu of a plan" as defined in 9VAC25-840-10 from the VESCP authority, or an erosion and sediment control plan prepared in accordance with annual standards and specifications approved by the department. Any operator proposing a new stormwater discharge from construction activities that is not required to obtain erosion and sediment control plan approval from a VESCP authority or does not adopt department -approved annual standards and specifications shall submit the erosion and sediment control plan to the department for review and approval. b. All erosion and sediment control plans shall include a statement describing the maintenance responsibilities required for the erosion and sediment controls used. c. A properly implemented approved erosion and sediment control plan, "agreement in lieu of a plan," or erosion and sediment control plan prepared in accordance with department -approved annual standards and specifications, adequately: (1) Controls the volume and velocity of stormwater runoff within the site to minimize soil erosion; (2) Controls stormwater discharges, including peak flow rates and total stormwater volume, to minimize erosion at outlets and to minimize downstream channel and stream bank erosion; (3) Minimizes the amount of soil exposed during the construction activity; (4) Minimizes the disturbance of steep slopes; (5) Minimizes sediment discharges from the site in a manner that addresses (i) the amount, frequency, intensity, and duration of precipitation; (ii) the nature of resulting stormwater runoff; and (iii) soil characteristics, including the range of soil particle sizes present on the site; (6) Provides and maintains natural buffers around surface waters, directs stormwater to vegetated areas to increase sediment removal, and maximizes stormwater infiltration, unless infeasible; (7) Minimizes soil compaction and, unless infeasible, preserves topsoil; (8) Ensures that stabilization of disturbed areas will be initiated immediately whenever any clearing, grading, excavating, or other land -disturbing activities have permanently ceased on any portion of the site, or temporarily ceased on any portion of the site and will not resume for a period exceeding 14 days; and General Permit No.: VAR10 Page 7 of 23 (9) Utilizes outlet structures that withdraw stormwater from the surface (i.e., above the permanent pool or wet storage water surface elevation), unless infeasible, when discharging from sediment basins or sediment traps. 3. Stormwater management plan. a. New construction activities. A stormwater management plan approved by the VSMP authority as authorized under the Virginia Stormwater Management Program (VSMP) Regulation (9VAC25- 870), or an "agreement in lieu of a stormwater management plan" as defined in 9VAC25-870-10 from the VSMP authority, or a stormwater management plan prepared in accordance with annual standards and specifications approved by the department. Any operator proposing a new stormwater discharge from construction activities that is not required to obtain stormwater management plan approval from a VSMP authority or does not adopt department -approved annual standards and specifications shall submit the stormwater management plan to the department for review and approval. b. Existing construction activities. Any operator that was authorized to discharge under the general permit issued in 2009, and that intends to continue coverage under this general permit, shall ensure compliance with the requirements of 9VAC25-870-93 through 9VAC25-870-99 of the VSMP Regulation, including but not limited to the water quality and quantity requirements. The SWPPP shall include a description of, and all necessary calculations supporting, all post - construction stormwater management measures that will be installed prior to the completion of the construction process to control pollutants in stormwater discharges after construction operations have been completed. Structural measures should be placed on upland soils to the degree possible. Such measures must be designed and installed in accordance with applicable VESCP authority, VSMP authority, state, and federal requirements, and any necessary permits must be obtained. 4. Pollution prevention plan. A pollution prevention plan that addresses potential pollutant -generating activities that may reasonably be expected to affect the quality of stormwater discharges from the construction activity, including any support activity. The pollution prevention plan shall: a. Identify the potential pollutant -generating activities and the pollutant that is expected to be exposed to stormwater; b. Describe the location where the potential pollutant -generating activities will occur, or if identified on the site plan, reference the site plan; c. Identify all nonstormwater discharges, as authorized in Part I E of this general permit, that are or will be commingled with stormwater discharges from the construction activity, including any applicable support activity; d. Identify the person responsible for implementing the pollution prevention practice or practices for each pollutant -generating activity (if other than the person listed as the qualified personnel); e. Describe the pollution prevention practices and procedures that will be implemented to: (1) Prevent and respond to leaks, spills, and other releases including (i) procedures for expeditiously stopping, containing, and cleaning up spills, leaks, and other releases; and (ii) procedures for reporting leaks, spills, and other releases in accordance with Part III G; (2) Prevent the discharge of spilled and leaked fuels and chemicals from vehicle fueling and maintenance activities (e.g., providing secondary containment such as spill berms, decks, spill containment pallets, providing cover where appropriate, and having spill kits readily available); General Permit No.: VAR10 Page 8 of 23 (3) Prevent the discharge of soaps, solvents, detergents, and wash water from construction materials, including the clean-up of stucco, paint, form release oils, and curing compounds (e.g., providing (i) cover (e.g., plastic sheeting or temporary roofs) to prevent contact with stormwater; (ii) collection and proper disposal in a manner to prevent contact with stormwater; and (iii) a similarly effective means designed to prevent discharge of these pollutants); (4) Minimize the discharge of pollutants from vehicle and equipment washing, wheel wash water, and other types of washing (e.g., locating activities away from surface waters and stormwater inlets or conveyance and directing wash waters to sediment basins or traps, using filtration devices such as filter bags or sand filters, or using similarly effective controls); (5) Direct concrete wash water into a leak -proof container or leak -proof settling basin. The container or basin shall be designed so that no overflows can occur due to inadequate sizing or precipitation. Hardened concrete wastes shall be removed and disposed of in a manner consistent with the handling of other construction wastes. Liquid concrete wastes shall be removed and disposed of in a manner consistent with the handling of other construction wash waters and shall not be discharged to surface waters; (6) Minimize the discharge of pollutants from storage, handling, and disposal of construction products, materials, and wastes including (i) building products such as asphalt sealants, copper flashing, roofing materials, adhesives, and concrete admixtures; (ii) pesticides, herbicides, insecticides, fertilizers, and landscape materials; and (iii) construction and domestic wastes such as packaging materials, scrap construction materials, masonry products, timber, pipe and electrical cuttings, plastics, Styrofoam, concrete, and other trash or building materials; (7) Prevent the discharge of fuels, oils, and other petroleum products, hazardous or toxic wastes, and sanitary wastes; and (8) Address any other discharge from the potential pollutant -generating activities not addressed above; and f. Describe procedures for providing pollution prevention awareness of all applicable wastes, including any wash water, disposal practices, and applicable disposal locations of such wastes, to personnel in order to comply with the conditions of this general permit. The operator shall implement the procedures described in the SWPPP. 5. SWPPP requirements for discharges to impaired waters, surface waters with an applicable TMDL wasteload allocation established and approved prior to the term of this general permit, and exceptional waters. The SWPPP shall: a. Identify the impaired water(s), approved TMDL(s), pollutant(s) of concern, and exceptional waters identified in 9VAC25-260-30 A 3 c, when applicable; b. Provide clear direction that: (1) Permanent or temporary soil stabilization shall be applied to denuded areas within seven days after final grade is reached on any portion of the site; (2) Nutrients shall be applied in accordance with manufacturer's recommendations or an approved nutrient management plan and shall not be applied during rainfall events; and (3) A modified inspection schedule shall be implemented in accordance with Part I B 4 or Part I B 5. General Permit No.: VAR10 Page 9 of 23 6. Qualified personnel. The name, phone number, and qualifications of the qualified personnel conducting inspections required by this general permit. 7. Delegation of authority. The individuals or positions with delegated authority, in accordance with Part III K, to sign inspection reports or modify the SWPPP. 8. SWPPP signature. The SWPPP shall be signed and dated in accordance with Part III K. B. SWPPP amendments, modification, and updates. 1. The operator shall amend the SWPPP whenever there is a change in the design, construction, operation, or maintenance that has a significant effect on the discharge of pollutants to surface waters and that has not been previously addressed in the SWPPP. 2. The SWPPP must be amended if, during inspections or investigations by the operator's qualified personnel, or by local, state, or federal officials, it is determined that the existing control measures are ineffective in minimizing pollutants in discharges from the construction activity. Revisions to the SWPPP shall include additional or modified control measures designed and implemented to correct problems identified. If approval by the VESCP authority, VSMP authority, or department is necessary for the control measure, revisions to the SWPPP shall be completed no later than seven calendar days following approval. Implementation of these additional or modified control measures must be accomplished as described in Part II G. 3. The SWPPP must clearly identify the contractor(s) that will implement and maintain each control measure identified in the SWPPP. The SWPPP shall be amended to identify any new contractor that will implement and maintain a control measure. 4. The operator shall update the SWPPP no later than seven days following any modification to its implementation. All modifications or updates to the SWPPP shall be noted and shall include the following items: a. A record of dates when: (1) Major grading activities occur; (2) Construction activities temporarily or permanently cease on a portion of the site; and (3) Stabilization measures are initiated; b. Documentation of replaced or modified controls where periodic inspections or other information have indicated that the controls have been used inappropriately or incorrectly and where modified as soon as possible; c. Areas that have reached final stabilization and where no further SWPPP or inspection requirements apply; d. All properties that are no longer under the legal control of the operator and the dates on which the operator no longer had legal control over each property; e. The date of any prohibited discharges, the discharge volume released, and what actions were taken to minimize the impact of the release; f. Measures taken to prevent the reoccurrence of any prohibited discharge; and g. Measures taken to address any evidence identified as a result of an inspection required under Part 11 F. General Permit No.: VAR10 Page 10 of 23 5. Amendments, modifications, or updates to the SWPPP shall be signed in accordance with Part III K. C. Public Notification. Upon commencement of land disturbance, the operator shall post conspicuously a copy of the notice of coverage letter near the main entrance of the construction activity. For linear projects, the operator shall post the notice of coverage letter at a publicly accessible location near an active part of the construction project (e.g., where a pipeline crosses a public road). The operator shall maintain the posted information until termination of general permit coverage as specified in Part I F. D. SWPPP availability. 1. Operators with day-to-day operational control over SWPPP implementation shall have a copy of the SWPPP available at a central location on -site for use by those identified as having responsibilities under the SWPPP whenever they are on the construction site. 2. The operator shall make the SWPPP and all amendments, modifications, and updates available upon request to the department, the VSMP authority, the EPA, the VESCP authority, local government officials, or the operator of a municipal separate storm sewer system receiving discharges from the construction activity. If an on -site location is unavailable to store the SWPPP when no personnel are present, notice of the SWPPP's location must be posted near the main entrance of the construction site. 3. The operator shall make the SWPPP available for public review in an electronic format or in hard copy. Information for public access to the SWPPP shall be posted and maintained in accordance with Part II C. If not provided electronically, public access to the SWPPP may be arranged upon request at a time and at a publicly accessible location convenient to the operator or his designee but shall be no less than once per month and shall be during normal business hours. Information not required to be contained within the SWPPP by this general permit is not required to be released. E. SWPPP implementation. The operator shall implement the SWPPP and subsequent amendments, modifications, and updates from commencement of land disturbance until termination of general permit coverage as specified in Part I F. 1. All control measures must be properly maintained in effective operating condition in accordance with good engineering practices and, where applicable, manufacturer specifications. If a site inspection required by Part II F identifies a control measure that is not operating effectively, corrective action(s) shall be completed as soon as practicable, but no later than seven days after discovery or a longer period as established by the VSMP authority, to maintain the continued effectiveness of the control measures. 2. If site inspections required by Part II F identify an existing control measure that needs to be modified or if an additional control measure is necessary for any reason, implementation shall be completed prior to the next anticipated measurable storm event. If implementation prior to the next anticipated measurable storm event is impracticable, then alternative control measures shall be implemented as soon as practicable, but no later than seven days after discovery or a longer period as established by the VSMP authority. F. SWPPP Inspections. 1. Personnel responsible for on -site and off -site inspections. Inspections required by this general permit shall be conducted by the qualified personnel identified by the operator in the SWPPP. The operator is responsible for insuring that the qualified personnel conduct the inspection. 2. Inspection schedule. a. Inspections shall be conducted at a frequency of: General Permit No.: VAR10 Page 11 of 23 (1) At least once every five business days; or (2) At least once every 10 business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted no later than the next business day. b. Where areas have been temporarily stabilized or land -disturbing activities will be suspended due to continuous frozen ground conditions and stormwater discharges are unlikely, the inspection frequency may be reduced to once per month. If weather conditions (such as above freezing temperatures or rain or snow events) make discharges likely, the operator shall immediately resume the regular inspection frequency. c. Representative inspections may be utilized for utility line installation, pipeline construction, or other similar linear construction activities provided that: (1) Temporary or permanent soil stabilization has been installed and vehicle access may compromise the temporary or permanent soil stabilization and potentially cause additional land disturbance increasing the potential for erosion; (2) Inspections occur on the same frequency as other construction activities; (3) Control measures are inspected along the construction site 0.25 miles above and below each access point (i.e., where a roadway, undisturbed right-of-way, or other similar feature intersects the construction activity and access does not compromise temporary or permanent soil stabilization); and (4) Inspection locations are provided in the report required by Part II F. 3. Inspection requirements. a. As part of the inspection, the qualified personnel shall: (1) Record the date and time of the inspection and when applicable the date and rainfall amount of the last measurable storm event; (2) Record the information and a description of any discharges occurring at the time of the inspection; (3) Record any land -disturbing activities that have occurred outside of the approved erosion and sediment control plan; (4) Inspect the following for installation in accordance with the approved erosion and sediment control plan, identification of any maintenance needs, and evaluation of effectiveness in minimizing sediment discharge, including whether the control has been inappropriately or incorrectly used: (a) All perimeter erosion and sediment controls, such as silt fence; (b) Soil stockpiles, when applicable, and borrow areas for stabilization or sediment trapping measures; (c) Completed earthen structures, such as dams, dikes, ditches, and diversions for stabilization; General Permit No.: VAR10 Page 12 of 23 (d) Cut and fill slopes; (e) Sediment basins and traps, sediment barriers, and other measures installed to control sediment discharge from stormwater; (f) Temporary or permanent channel, flume, or other slope drain structures installed to convey concentrated runoff down cut and fill slopes; (g) Storm inlets that have been made operational to ensure that sediment laden stormwater does not enter without first being filtered or similarly treated; and (h) Construction vehicle access routes that intersect or access paved roads for minimizing sediment tracking; (5) Inspect areas that have reached final grade or that will remain dormant for more than 14 days for initiation of stabilization activities; (6) Inspect areas that have reached final grade or that will remain dormant for more than 14 days for completion of stabilization activities within seven days of reaching grade or stopping work; (7) Inspect for evidence that the approved erosion and sediment control plan, "agreement in lieu of a plan," or erosion and sediment control plan prepared in accordance with department - approved annual standards and specifications has not been properly implemented. This includes but is not limited to: (a) Concentrated flows of stormwater in conveyances such as rills, rivulets or channels that have not been filtered, settled, or similarly treated prior to discharge, or evidence thereof; (b) Sediment laden or turbid flows of stormwater that have not been filtered or settled to remove sediments prior to discharge; (c) Sediment deposition in areas that drain to unprotected stormwater inlets or catch basins that discharge to surface waters. Inlets and catch basins with failing sediments controls due to improper installation, lack of maintenance, or inadequate design are considered unprotected; (d) Sediment deposition on any property (including public and private streets) outside of the construction activity covered by this general permit; (e) Required stabilization has not been initiated or completed on portions of the site; (f) Sediment basins without adequate wet or dry storage volume or sediment basins that allow the discharge of stormwater from below the surface of the wet storage portion of the basin; (g) Sediment traps without adequate wet or dry storage or sediment traps that allow the discharge of stormwater from below the surface of the wet storage portion of the trap; and (h) Land disturbance outside of the approved area to be disturbed; (8) Inspect pollutant generating activities identified in the pollution prevention plan for the proper implementation, maintenance and effectiveness of the procedures and practices; (9) Identify any pollutant generating activities not identified in the pollution prevention plan; and General Permit No.: VAR10 Page 13 of 23 (10) Identify and document the presence of any evidence of the discharge of pollutants prohibited by this general permit. 4. Inspection report. Each inspection report shall include the following items: a. The date and time of the inspection and when applicable, the date and rainfall amount of the last measurable storm event; b. Summarized findings of the inspection; c. The location(s) of prohibited discharges; d. The location(s) of control measures that require maintenance; e. The location(s) of control measures that failed to operate as designed or proved inadequate or inappropriate for a particular location; f. The location(s) where any evidence identified under Part II F 3 a (7) exists; g. The location(s) where any additional control measure is needed that did not exist at the time of inspection; h. A list of corrective actions required (including any changes to the SWPPP that are necessary) as a result of the inspection or to maintain permit compliance; i. Documentation of any corrective actions required from a previous inspection that have not been implemented; and j. The date and signature of the qualified personnel and the operator or its duly authorized representative. The inspection report and any actions taken in accordance with Part II must be retained by the operator as part of the SWPPP for at least three years from the date that general permit coverage expires or is terminated. The inspection report shall identify any incidents of noncompliance. Where an inspection report does not identify any incidents of noncompliance, the report shall contain a certification that the construction activity is in compliance with the SWPPP and this general permit. The report shall be signed in accordance with Part III K of this general permit. G. Corrective actions. 1. The operator shall implement the corrective action(s) identified as a result of an inspection as soon as practicable but no later than seven days after discovery or a longer period as approved by the VSMP authority. If approval of a corrective action by a regulatory authority (e.g., VSMP authority, VESCP authority, or the department) is necessary, additional control measures shall be implemented to minimize pollutants in stormwater discharges until such approvals can be obtained. 2. The operator may be required to remove accumulated sediment deposits located outside of the construction activity covered by this general permit as soon as practicable in order to minimize environmental impacts. The operator shall notify the VSMP authority and the department as well as obtain all applicable federal, state, and local authorizations, approvals, and permits prior to the removal of sediments accumulated in surface waters including wetlands. General Permit No.: VAR10 Page 14 of 23 PART III CONDITIONS APPLICABLE TO ALL VPDES PERMITS NOTE: Discharge monitoring is not required for this general permit. If the operator chooses to monitor stormwater discharges or control measures, the operator must comply with the requirements of subsections A, B, and C, as appropriate. A. Monitoring. 1. Samples and measurements taken for the purpose of monitoring shall be representative of the monitoring activity. 2. Monitoring shall be conducted according to procedures approved under 40 CFR Part 136 or alternative methods approved by the U.S. Environmental Protection Agency, unless other procedures have been specified in this general permit. Analyses performed according to test procedures approved under 40 CFR Part 136 shall be performed by an environmental laboratory certified under regulations adopted by the Department of General Services (1 VAC30-45 or 1 VAC30-46). 3. The operator shall periodically calibrate and perform maintenance procedures on all monitoring and analytical instrumentation at intervals that will ensure accuracy of measurements. B. Records. 1. Monitoring records and reports shall include: a. The date, exact place, and time of sampling or measurements; b. The individual(s) who performed the sampling or measurements; c. The date(s) and time(s) analyses were performed; d. The individual(s) who performed the analyses; e. The analytical techniques or methods used; and f. The results of such analyses. 2. The operator shall retain records of all monitoring information, including all calibration and maintenance records and all original strip chart recordings for continuous monitoring instrumentation, copies of all reports required by this general permit, and records of all data used to complete the registration statement for this general permit, for a period of at least three years from the date of the sample, measurement, report or request for coverage. This period of retention shall be extended automatically during the course of any unresolved litigation regarding the regulated activity or regarding control standards applicable to the operator, or as requested by the board. C. Reporting monitoring results. 1. The operator shall update the SWPPP to include the results of the monitoring as may be performed in accordance with this general permit, unless another reporting schedule is specified elsewhere in this general permit. 2. Monitoring results shall be reported on a discharge monitoring report (DMR); on forms provided, approved or specified by the department; or in any format provided that the date, location, parameter, method, and result of the monitoring activity are included. General Permit No.: VAR10 Page 15 of 23 3. If the operator monitors any pollutant specifically addressed by this general permit more frequently than required by this general permit using test procedures approved under 40 CFR Part 136 or using other test procedures approved by the U.S. Environmental Protection Agency or using procedures specified in this general permit, the results of this monitoring shall be included in the calculation and reporting of the data submitted in the DMR or reporting form specified by the department. 4. Calculations for all limitations which require averaging of measurements shall utilize an arithmetic mean unless otherwise specified in this general permit. D. Duty to provide information. The operator shall furnish, within a reasonable time, any information which the board may request to determine whether cause exists for modifying, revoking and reissuing, or terminating this general permit or to determine compliance with this general permit. The board, department, EPA, or VSMP authority may require the operator to furnish, upon request, such plans, specifications, and other pertinent information as may be necessary to determine the effect of the wastes from his discharge on the quality of surface waters, or such other information as may be necessary to accomplish the purposes of the CWA and the Virginia Stormwater Management Act. The operator shall also furnish to the board, department, EPA, or VSMP authority, upon request, copies of records required to be kept by this general permit. E. Compliance schedule reports. Reports of compliance or noncompliance with, or any progress reports on, interim and final requirements contained in any compliance schedule of this general permit shall be submitted no later than 14 days following each schedule date. F. Unauthorized stormwater discharges. Pursuant to § 62.1-44.5 of the Code of Virginia, except in compliance with a state permit issued by the department, it shall be unlawful to cause a stormwater discharge from a construction activity. G. Reports of unauthorized discharges. Any operator who discharges or causes or allows a discharge of sewage, industrial waste, other wastes or any noxious or deleterious substance or a hazardous substance or oil in an amount equal to or in excess of a reportable quantity established under either 40 CFR Part 110, 40 CFR Part 117, 40 CFR Part 302, or § 62.1-44.34:19 of the Code of Virginia that occurs during a 24-hour period into or upon surface waters or who discharges or causes or allows a discharge that may reasonably be expected to enter surface waters, shall notify the Department of Environmental Quality of the discharge immediately upon discovery of the discharge, but in no case later than within 24 hours after said discovery. A written report of the unauthorized discharge shall be submitted to the department and the VSMP authority within five days of discovery of the discharge. The written report shall contain: 1. A description of the nature and location of the discharge; 2. The cause of the discharge; 3. The date on which the discharge occurred; 4. The length of time that the discharge continued; 5. The volume of the discharge; 6. If the discharge is continuing, how long it is expected to continue; 7. If the discharge is continuing, what the expected total volume of the discharge will be; and 8. Any steps planned or taken to reduce, eliminate and prevent a recurrence of the present discharge or any future discharges not authorized by this general permit. General Permit No.: VAR10 Page 16 of 23 Discharges reportable to the department and the VSMP authority under the immediate reporting requirements of other regulations are exempted from this requirement. H. Reports of unusual or extraordinary discharges. If any unusual or extraordinary discharge including a "bypass" or "upset," as defined herein, should occur from a facility and the discharge enters or could be expected to enter surface waters, the operator shall promptly notify, in no case later than within 24 hours, the department and the VSMP authority by telephone after the discovery of the discharge. This notification shall provide all available details of the incident, including any adverse effects on aquatic life and the known number of fish killed. The operator shall reduce the report to writing and shall submit it to the department and the VSMP authority within five days of discovery of the discharge in accordance with Part III 1 2. Unusual and extraordinary discharges include but are not limited to any discharge resulting from: 1. Unusual spillage of materials resulting directly or indirectly from processing operations; 2. Breakdown of processing or accessory equipment; 3. Failure or taking out of service of some or all of the facilities; and 4. Flooding or other acts of nature. I. Reports of noncompliance. The operator shall report any noncompliance which may adversely affect surface waters or may endanger public health. 1. An oral report to the department and the VSMP authority shall be provided within 24 hours from the time the operator becomes aware of the circumstances. The following shall be included as information that shall be reported within 24 hours under this subdivision: a. Any unanticipated bypass; and b. Any upset that causes a discharge to surface waters. 2. A written report shall be submitted within five days and shall contain: a. A description of the noncompliance and its cause; b. The period of noncompliance, including exact dates and times, and if the noncompliance has not been corrected, the anticipated time it is expected to continue; and c. Steps taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance. The department may waive the written report on a case -by -case basis for reports of noncompliance under Part III I if the oral report has been received within 24 hours and no adverse impact on surface waters has been reported. 3. The operator shall report all instances of noncompliance not reported under Part III 1 1 or 2 in writing as part of the SWPPP. The reports shall contain the information listed in Part III 12. NOTE: The reports required in Part III G, H and I shall be made to the department and the VSMP authority. Reports may be made by telephone, email, or by fax. For reports outside normal working hours, leaving a recorded message shall fulfill the immediate reporting requirement. For emergencies, the Virginia Department of Emergency Management maintains a 24-hour telephone service at 1-800-468- 8892. General Permit No.: VAR10 Page 17 of 23 4. Where the operator becomes aware of a failure to submit any relevant facts, or submittal of incorrect information in any report, including a registration statement, to the department or the VSMP authority, the operator shall promptly submit such facts or correct information. J. Notice of planned changes. 1. The operator shall give notice to the department and the VSMP authority as soon as possible of any planned physical alterations or additions to the permitted facility or activity. Notice is required only when: a. The operator plans an alteration or addition to any building, structure, facility, or installation that may meet one of the criteria for determining whether a facility is a new source in 9VAC25-870- 420; b. The operator plans an alteration or addition that would significantly change the nature or increase the quantity of pollutants discharged. This notification applies to pollutants that are not subject to effluent limitations in this general permit; or 2. The operator shall give advance notice to the department and VSMP authority of any planned changes in the permitted facility or activity, which may result in noncompliance with state permit requirements. K. Signatory requirements. 1. Registration statement. All registration statements shall be signed as follows: a. For a corporation: by a responsible corporate officer. For the purpose of this chapter, a responsible corporate officer means: (i) a president, secretary, treasurer, or vice-president of the corporation in charge of a principal business function, or any other person who performs similar policy -making or decision -making functions for the corporation; or (ii) the manager of one or more manufacturing, production, or operating facilities, provided the manager is authorized to make management decisions that govern the operation of the regulated facility including having the explicit or implicit duty of making major capital investment recommendations, and initiating and directing other comprehensive measures to assure long-term compliance with environmental laws and regulations; the manager can ensure that the necessary systems are established or actions taken to gather complete and accurate information for state permit application requirements; and where authority to sign documents has been assigned or delegated to the manager in accordance with corporate procedures; b. For a partnership or sole proprietorship: by a general partner or the proprietor, respectively; or c. For a municipality, state, federal, or other public agency: by either a principal executive officer or ranking elected official. For purposes of this chapter, a principal executive officer of a public agency includes: (i) the chief executive officer of the agency or (ii) a senior executive officer having responsibility for the overall operations of a principal geographic unit of the agency. 2. Reports, etc. All reports required by this general permit, including SWPPPs, and other information requested by the board or the department shall be signed by a person described in Part III K 1 or by a duly authorized representative of that person. A person is a duly authorized representative only if: a. The authorization is made in writing by a person described in Part III K 1; b. The authorization specifies either an individual or a position having responsibility for the overall operation of the regulated facility or activity such as the position of plant manager, operator of a well or a well field, superintendent, position of equivalent responsibility, or an individual or position having overall responsibility for environmental matters for the operator. (A duly authorized General Permit No.: VAR10 Page 18 of 23 representative may thus be either a named individual or any individual occupying a named position); and c. The signed and dated written authorization is included in the SWPPP. A copy must be provided to the department and VSMP authority, if requested. 3. Changes to authorization. If an authorization under Part III K 2 is no longer accurate because a different individual or position has responsibility for the overall operation of the construction activity, a new authorization satisfying the requirements of Part III K 2 shall be submitted to the VSMP authority as the administering entity for the board prior to or together with any reports or information to be signed by an authorized representative. 4. Certification. Any person signing a document under Part III K 1 or 2 shall make the following certification: "I certify under penalty of law that I have read and understand this document and that this document and all attachments were prepared in accordance with a system designed to assure that qualified personnel properly gathered and evaluated the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing violations." L. Duty to comply. The operator shall comply with all conditions of this general permit. Any state permit noncompliance constitutes a violation of the Virginia Stormwater Management Act and the Clean Water Act, except that noncompliance with certain provisions of this general permit may constitute a violation of the Virginia Stormwater Management Act but not the Clean Water Act. Permit noncompliance is grounds for enforcement action; for state permit termination, revocation and reissuance, or modification; or denial of a state permit renewal application. The operator shall comply with effluent standards or prohibitions established under § 307(a) of the Clean Water Act for toxic pollutants within the time provided in the regulations that establish these standards or prohibitions or standards for sewage sludge use or disposal, even if this general permit has not yet been modified to incorporate the requirement. M. Duty to reapply. If the operator wishes to continue an activity regulated by this general permit after the expiration date of this general permit, the operator shall submit a new registration statement at least 90 days before the expiration date of the existing general permit, unless permission for a later date has been granted by the board. The board shall not grant permission for registration statements to be submitted later than the expiration date of the existing general permit. N. Effect of a state permit. This general permit does not convey any property rights in either real or personal property or any exclusive privileges, nor does it authorize any injury to private property or invasion of personal rights, or any infringement of federal, state or local law or regulations. O. State law. Nothing in this general permit shall be construed to preclude the institution of any legal action under, or relieve the operator from any responsibilities, liabilities, or penalties established pursuant to any other state law or regulation or under authority preserved by § 510 of the Clean Water Act. Except as provided in general permit conditions on "bypassing" (Part III U) and "upset' (Part III V), nothing in this general permit shall be construed to relieve the operator from civil and criminal penalties for noncompliance. P. Oil and hazardous substance liability. Nothing in this general permit shall be construed to preclude the institution of any legal action or relieve the operator from any responsibilities, liabilities, or penalties to which the operator is or may be subject under §§ 62.1-44.34:14 through 62.1-44.34:23 of the State Water Control Law or § 311 of the Clean Water Act. General Permit No.: VAR10 Page 19 of 23 Q. Proper operation and maintenance. The operator shall at all times properly operate and maintain all facilities and systems of treatment and control (and related appurtenances), which are installed or used by the operator to achieve compliance with the conditions of this general permit. Proper operation and maintenance also includes effective plant performance, adequate funding, adequate staffing, and adequate laboratory and process controls, including appropriate quality assurance procedures. This provision requires the operation of back-up or auxiliary facilities or similar systems, which are installed by the operator only when the operation is necessary to achieve compliance with the conditions of this general permit. R. Disposal of solids or sludges. Solids, sludges or other pollutants removed in the course of treatment or management of pollutants shall be disposed of in a manner so as to prevent any pollutant from such materials from entering surface waters and in compliance with all applicable state and federal laws and regulations. S. Duty to mitigate. The operator shall take all steps to minimize or prevent any discharge in violation of this general permit that has a reasonable likelihood of adversely affecting human health or the environment. T. Need to halt or reduce activity not a defense. It shall not be a defense for an operator in an enforcement action that it would have been necessary to halt or reduce the permitted activity in order to maintain compliance with the conditions of this general permit. U. Bypass. 1. 'Bypass," as defined in 9VAC25-870-10, means the intentional diversion of waste streams from any portion of a treatment facility. The operator may allow any bypass to occur that does not cause effluent limitations to be exceeded, but only if it also is for essential maintenance to ensure efficient operation. These bypasses are not subject to the provisions of Part III U 2 and 3. 2. Notice a. Anticipated bypass. If the operator knows in advance of the need for a bypass, the operator shall submit prior notice to the department, if possible at least 10 days before the date of the bypass. b. Unanticipated bypass. The operator shall submit notice of an unanticipated bypass as required in Part III I. 3. Prohibition of bypass. a. Except as provided in Part III U 1, bypass is prohibited, and the board or department may take enforcement action against an operator for bypass unless: (1) Bypass was unavoidable to prevent loss of life, personal injury, or severe property damage. Severe property damage means substantial physical damage to property, damage to the treatment facilities that causes them to become inoperable, or substantial and permanent loss of natural resources that can reasonably be expected to occur in the absence of a bypass. Severe property damage does not mean economic loss caused by delays in production; (2) There were no feasible alternatives to the bypass, such as the use of auxiliary treatment facilities, retention of untreated wastes, or maintenance during normal periods of equipment downtime. This condition is not satisfied if adequate back-up equipment should have been installed in the exercise of reasonable engineering judgment to prevent a bypass that occurred during normal periods of equipment downtime or preventive maintenance; and (3) The operator submitted notices as required under Part III U 2. General Permit No.: VAR10 Page 20 of 23 b. The department may approve an anticipated bypass, after considering its adverse effects, if the department determines that it will meet the three conditions listed in Part III U 3 a. V. Upset. 1. An "upset," as defined in 9VAC25-870-10, means an exceptional incident in which there is unintentional and temporary noncompliance with technology -based state permit effluent limitations because of factors beyond the reasonable control of the operator. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventive maintenance, or careless or improper operation. 2. An upset constitutes an affirmative defense to an action brought for noncompliance with technology - based state permit effluent limitations if the requirements of Part III V 4 are met. A determination made during administrative review of claims that noncompliance was caused by upset, and before an action for noncompliance, is not a final administrative action subject to judicial review. 3. An upset does not include noncompliance to the extent caused by operational error, improperly designed treatment facilities, inadequate treatment facilities, lack of preventative maintenance, or careless or improper operation. 4. An operator who wishes to establish the affirmative defense of upset shall demonstrate, through properly signed, contemporaneous operating logs or other relevant evidence that: a. An upset occurred and that the operator can identify the cause(s) of the upset; b. The permitted facility was at the time being properly operated; c. The operator submitted notice of the upset as required in Part III I; and d. The operator complied with any remedial measures required under Part III S. 5. In any enforcement proceeding, the operator seeking to establish the occurrence of an upset has the burden of proof. W. Inspection and entry. The operator shall allow the department as the board's designee, the VSMP authority, EPA, or an authorized representative of either entity (including an authorized contractor), upon presentation of credentials and other documents as may be required by law to: 1. Enter upon the operator's premises where a regulated facility or activity is located or conducted, or where records must be kept under the conditions of this general permit; 2. Have access to and copy, at reasonable times, any records that must be kept under the conditions of this general permit; 3. Inspect and photograph at reasonable times any facilities, equipment (including monitoring and control equipment), practices, or operations regulated or required under this general permit; and 4. Sample or monitor at reasonable times, for the purposes of ensuring state permit compliance or as otherwise authorized by the Clean Water Act or the Virginia Stormwater Management Act, any substances or parameters at any location. For purposes of this section, the time for inspection shall be deemed reasonable during regular business hours, and whenever the facility is discharging. Nothing contained herein shall make an inspection unreasonable during an emergency. General Permit No.: VAR10 Page 21 of 23 X. State permit actions. State permits may be modified, revoked and reissued, or terminated for cause. The filing of a request by the operator for a state permit modification, revocation and reissuance, or termination, or a notification of planned changes or anticipated noncompliance does not stay any state permit condition. Y. Transfer of state permits. 1. State permits are not transferable to any person except after notice to the department. Except as provided in Part III Y 2, a state permit may be transferred by the operator to a new operator only if the state permit has been modified or revoked and reissued, or a minor modification made, to identify the new operator and incorporate such other requirements as may be necessary under the Virginia Stormwater Management Act and the Clean Water Act. 2. As an alternative to transfers under Part III Y 1, this state permit may be automatically transferred to a new operator if: a. The current operator notifies the department at least 30 days in advance of the proposed transfer of the title to the facility or property; b. The notice includes a written agreement between the existing and new operators containing a specific date for transfer of state permit responsibility, coverage, and liability between them; and c. The department does not notify the existing operator and the proposed new operator of its intent to modify or revoke and reissue the state permit. If this notice is not received, the transfer is effective on the date specified in the agreement mentioned in Part III Y 2 b. 3. For ongoing construction activity involving a change of operator, the new operator shall accept and maintain the existing SWPPP, or prepare and implement a new SWPPP prior to taking over operations at the site. Z. Severability. The provisions of this general permit are severable, and if any provision of this general permit or the application of any provision of this state permit to any circumstance, is held invalid, the application of such provision to other circumstances and the remainder of this general permit shall not be affected thereby. General Permit No.: VAR10 Page 22 of 23 DEFINITIONS "Business day" means Monday through Friday excluding state holidays. "Commencement of land disturbance" means the initial disturbance of soils associated with clearing, grading, or excavating activities or other construction activities (e.g., stockpiling of fill material). "Construction site" means the land where any land -disturbing activity is physically located or conducted, including any adjacent land used or preserved in connection with the land -disturbing activity. "Final stabilization" means that one of the following situations has occurred: 1. All soil disturbing activities at the site have been completed and a permanent vegetative cover has been established on denuded areas not otherwise permanently stabilized. Permanent vegetation shall not be considered established until a ground cover is achieved that is uniform (e.g., evenly distributed), mature enough to survive, and will inhibit erosion. 2. For individual lots in residential construction, final stabilization can occur by either: a. The homebuilder completing final stabilization as specified in subdivision 1 of this definition; or b. The homebuilder establishing temporary soil stabilization, including perimeter controls for an individual lot prior to occupation of the home by the homeowner, and informing the homeowner of the need for, and benefits of, final stabilization. 3. For construction projects on land used for agricultural purposes, final stabilization may be accomplished by returning the disturbed land to its preconstruction agricultural use. Areas disturbed that were not previously used for agricultural activities, such as buffer strips immediately adjacent to surface waters, and areas that are not being returned to their preconstruction agricultural use must meet the final stabilization criteria specified in subdivision 1 or 2 of this definition. "Immediately" means as soon as practicable, but no later than the end of the next business day, following the day when the land -disturbing activities have temporarily or permanently ceased. In the context of this general permit, "immediately" is used to define the deadline for initiating stabilization measures. "Impaired waters" means surface waters identified as impaired on the 2012 § 305(b)/303(d) Water Quality Assessment Integrated Report. "Infeasible" means not technologically possible or not economically practicable and achievable in light of best industry practices. "Initiation of stabilization activities" means: 1. Prepping the soil for vegetative or nonvegetative stabilization; 2. Applying mulch or other nonvegetative product to the exposed area; 3. Seeding or planting the exposed area; 4. Starting any of the above activities on a portion of the area to be stabilized, but not on the entire area; or 5. Finalizing arrangements to have the stabilization product fully installed in compliance with the applicable deadline for completing stabilization. This list is not exhaustive. General Permit No.: VAR10 Page 23 of 23 "Measurable storm event" means a rainfall event producing 0.25 inches of rain or greater over 24 hours. "Stabilized" means land that has been treated to withstand normal exposure to natural forces without incurring erosion damage. Section 12. Inspection logs INSPECTION FREQUENCY: (1) Inspections shall be conducted at a frequency of (i) at least once every four business days or (ii) at least once every five business days and no later than 48 hours following a measurable storm event. In the event that a measurable storm event occurs when there are more than 48 hours between business days, the inspection shall be conducted on the next business day; and (2) Representative inspections used by utility line installation, pipeline construction, or other similar linear construction activities shall inspect all outfalls discharging to surface waters identified as impaired or for which a TMDL wasteload allocation has been established and approved prior to the term of this general permit. Issued — 10/2014 Stormwater Pollution Prevention Plan (SWPPP) Albemarle County STORM WATER INSPECTIONS FOR VSMP GENERAL PERMIT LAND DISTRIBUTING ACTIVITIES Page 1 PROJECT: MONITORING FOR THE WEEK BEGINNING: DATE AND TIME OF INSPECTION: RAINFALL: Date of Rain Amount (Inches) Initials EROSION AND SEDIMENT CONTROL FACILITIES INSPECTED: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part 164d.) Facility Identification Date and Time of Inspection Operating Properly (Y/N) Description of inspection observations OBSERVATION OF RUNOFF AT STORMWATER DISHCARGE OUTFALLS: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part 164d.) By this signature, I certify that this report is accurate and complete to the best of my knowledge: Qualified Personnel By this signature, I certify that the contruction activity is in compliance with the SWPP and general permit. Qualified Personnel Note: If msepction report does not identify any mci ceritication statement on page 3 shall be signed. By this signature, I certify that this report is accurate and complete to the best of my knowledge: Operator/Duly Authorized Representative By this signature, I certify that the contruction activity is in compliance with the SWPP and general permit. Operator/Duly Authorized Representative nce Stormwater Discharge Outfall Identification Date Clarity Floating Solids Suspended Solids Oil Sheen Other obvious indicators of stormwater pollution (list and describe) Visible sediment leaving the site? (Y/N) If yes, describe actions taken to prevent future releases (may need to attach additional information) Describe measures taken to clean up sediment outside of disturbed limits (may need to attach additional information) Clarity: Choose the number which best describes the clarity of the discharge where 1 is clear and 10 is very cloudy Floating Solids: Choose the number which best describes the amount of floating solids in the discharge where 1 is no solids and 10 the surface us covered in floating solids Suspended Solids: Choose the number which best describes the amount of suspended solids in the discharge where 1 is no solids and 10 is extremely muddy. Oil Sheen: Is there an oil sheen in the stormwater discharge (Y or N)? STORM WATER INSPECTIONS FOR VSMP GENERAL PERMIT LAND DISTRIBUTING ACTIVITIES Page 1 PROJECT: MONITORING FOR THE WEEK BEGINNING: DATE AND TIME OF INSPECTION: RAINFALL: Date of Rain Amount (Inches) Initials EROSION AND SEDIMENT CONTROL FACILITIES INSPECTED: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part 164d.) Facility Identification Date and Time of Inspection Operating Properly (Y/N) Description of inspection observations OBSERVATION OF RUNOFF AT STORMWATER DISHCARGE OUTFALLS: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part 164d.) By this signature, I certify that this report is accurate and complete to the best of my knowledge: Qualified Personnel By this signature, I certify that the contruction activity is in compliance with the SWPP and general permit. Qualified Personnel Note: If msepction report does not identify any mci ceritication statement on page 3 shall be signed. By this signature, I certify that this report is accurate and complete to the best of my knowledge: Operator/Duly Authorized Representative By this signature, I certify that the contruction activity is in compliance with the SWPP and general permit. Operator/Duly Authorized Representative nce Stormwater Discharge Outfall Identification Date Clarity Floating Solids Suspended Solids Oil Sheen Other obvious indicators of stormwater pollution (list and describe) Visible sediment leaving the site? (Y/N) If yes, describe actions taken to prevent future releases (may need to attach additional information) Describe measures taken to clean up sediment outside of disturbed limits (may need to attach additional information) Clarity: Choose the number which best describes the clarity of the discharge where 1 is clear and 10 is very cloudy Floating Solids: Choose the number which best describes the amount of floating solids in the discharge where 1 is no solids and 10 the surface us covered in floating solids Suspended Solids: Choose the number which best describes the amount of suspended solids in the discharge where 1 is no solids and 10 is extremely muddy. Oil Sheen: Is there an oil sheen in the stormwater discharge (Y or N)? STORM WATER INSPECTIONS FOR VSMP GENERAL PERMIT LAND DISTRIBUTING ACTIVITIES Page 1 PROJECT: MONITORING FOR THE WEEK BEGINNING: DATE AND TIME OF INSPECTION: RAINFALL: Date of Rain Amount (Inches) Initials EROSION AND SEDIMENT CONTROL FACILITIES INSPECTED: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part 164d.) Facility Identification Date and Time of Inspection Operating Properly (Y/N) Description of inspection observations OBSERVATION OF RUNOFF AT STORMWATER DISHCARGE OUTFALLS: (Inspections shall be conducted according to Part IIF2 of the Permit. However, if the discharges of stormwater from construction activities are to surface waters identified as imparied, inspections shall be conducted according to Part 164d.) By this signature, I certify that this report is accurate and complete to the best of my knowledge: Qualified Personnel By this signature, I certify that the contruction activity is in compliance with the SWPP and general permit. Qualified Personnel Note: If msepction report does not identify any mci ceritication statement on page 3 shall be signed. By this signature, I certify that this report is accurate and complete to the best of my knowledge: Operator/Duly Authorized Representative By this signature, I certify that the contruction activity is in compliance with the SWPP and general permit. Operator/Duly Authorized Representative nce Stormwater Discharge Outfall Identification Date Clarity Floating Solids Suspended Solids Oil Sheen Other obvious indicators of stormwater pollution (list and describe) Visible sediment leaving the site? (Y/N) If yes, describe actions taken to prevent future releases (may need to attach additional information) Describe measures taken to clean up sediment outside of disturbed limits (may need to attach additional information) Clarity: Choose the number which best describes the clarity of the discharge where 1 is clear and 10 is very cloudy Floating Solids: Choose the number which best describes the amount of floating solids in the discharge where 1 is no solids and 10 the surface us covered in floating solids Suspended Solids: Choose the number which best describes the amount of suspended solids in the discharge where 1 is no solids and 10 is extremely muddy. Oil Sheen: Is there an oil sheen in the stormwater discharge (Y or N)?