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Home My WebLink AboutSDP201800047 Plan - Approved Minor Amendment 2018-10-09m QZ -o Y cu; ° � 3 C D i 0 z� um c W 3 o z° Revisions PRE_ FACE IT IS THE INTENT OF THESE SPECIFICATIONS TO HAVE A COMPLETELY PREPARED SITE FOR THE CONSTRUCTION OF AN ELECTRICAL FACILITY AT THE COMPLETION OF THE "WORK" AS INDICATED ON THE DRAWINGS, SPECIFICATIONS, OR OTHER DOCUMENTS PROVIDED. THE REGULATIONS OF ALL LOCAL, STATE, OR FEDERAL GOVERNMENTAL BODIES HAVING JURISDICTION OVER THE WORKING AREAS SHALL BE OBSERVED AT ALL TIMES. ANY SPECIFICATIONS OR INSTRUCTIONS APPEARING ON THE DRAWINGS SHALL HAVE PRECEDENCE OVER THE WRITTEN SPECIFICATIONS WHICH APPEAR HEREIN. IN THE EVENT THAT A DISCREPANCY OR OMISSION HAS OCCURRED, DOMINION SHALL BE CONSULTED FOR RESOLUTIONS. ALL "WORK" SHALL BE PERFORMED IN A MANNER CONSISTENT WITH THE BEST PRACTICES OF THE TRADES INVOLVED. ALL "WORK" SHALL BE PERFORMED WITHIN THE LIMITS OF THE PROPERTY / RIGHTS -OF -WAY SHOWN ON THE DRAWINGS. THE CONTRACTOR WILL RECOGNIZE AND ABIDE BY ALL TERMS AND CONDITIONS OF PERMITS, EASEMENTS, AND AGREEMENTS RELATING TO THE PROJECT. CLEARING AND GRUBBING LIMITS FOR CLEARING AND/OR GRUBBING SHALL BE AS DEFINED ON THE DRAWINGS. CLEARING SHALL CONSIST OF REMOVAL AND DISPOSAL OF BRUSH, DOWNED TIMBER, LOGS, STANDING TREES AND SNAGS, OTHER GROWTH AND ANY ITEMS THAT WOULD INTERFERE WITH CONSTRUCTION OPERATIONS. GRUBBING SHALL CONSIST OF REMOVAL AND DISPOSAL OF STUMPS„ BURIED LOGS, ROOTS GREATER THAN �(/2" DIAMETER, AND ANY OTHER ORGANIC MATERIAL BELOW THE GROUND SURFACE. ALL CLEARED AREAS WILL BE GRUBBED UNLESS OTHERWISE NOTED. DISPOSAL OF CLEARED/GRUBBED MATERIAL BY BURNING SHALL ONLY BE USED WHEN WRITTEN APPROVAL IS OBTAINED FROM LOCAL AUTHORITIES AND DOMINION. OTHERWISE, DISPOSAL SHALL BE OUTSIDE THE LIMITS OF DOMINION CONTROLLED LAND. T0_ PSOIL ALL TOPSOIL AND SURFACE SOILS CONTAINING ORGANIC MATERIAL SHALL BE REMOVED FROM THE GRUBBED AREA. TOPSOIL SHALL BE STOCKPILED FOR FUTURE USE IN APPROVED LOCATIONS UNLESS OTHERWISE SHOWN ON THE DRAWINGS. TOPSOIL SHALL NOT BE USED AS, OR MIXED WITH, FILL MATERIAL IN THE CONSTRUCTION OF EARTH EMBANKMENTS UNLESS OTHERWISE SHOWIN ON THE DRAWINGS. TOPSOIL MATERIAL USED AS A SURFACE DRESSING SHALL BE REASONABLY FREE OF CINDERS, DEBRIS, AND STONES. UNSUITABLE AND EXCESS TOPSOIL MATERIAL SHALL BE DISPOSED OFFSITE. EXCAVATION : EXCAVATION SHALL BE ACCOMPLISHED BY CUTTING ACCURATELY TO THE CROSS SECTIONS, GRADES, AND ELEVATIONS SHOWN ON THE DRAWINGS. SOFT, UNSTABLE, OR OTHERWISE UNSATISFACTORY MATERIALS ENCOUNTERED AT THE REQUIRED GRADES SHALL BE REMOVED AS DIRECTED AND REPLACED WITH APPROVED, PROPERLY COMPACTED MATERIAL. COMMON EXCAVATION SHALL INCLUDE ALL MATERIAL WHICH CAN BE REMOVED BY COMMON EARTH EXCAVATION EQUIPMENT, OTHER THAN SOLID ROCK OR BOULDERS AND DETACHED PIECES OF ROCK, EACH EXCEEDING 2 CUBIC YARDS IN VrOLUME. ROCK EXCAVATION SHALL BE MATERIAL WHICH REQUIRES THE USE OF PNEUMATIC HAMMERS AND/OR EXPLOSIVES FOR REMOVAL. SITE PREPARATION : IF EARTHWORK OPERATIONS ARE PERFORMED DURING WET SEASONS„ CONTRACTOR SHALL AVOID OPERATING EQUIPMENT ON SATURATED SOILS. ANY WET SUB(GRADE AREAS WHICH RECEIVE COMPACTED FILL SHALL BE DRAINED AND ALLOWED TO DRY. THE EXPOSED SUBGRADES OF THE BUILDING PAD AND ROADBEDS SHALL BE PROOFROLLED TO DETECT UNSUITABLE SOIL CONDITIONS. PROOFROLLING SHALL BE DONE AFTER A SUITABLE PERIOD OF DRY WEATHER TO AVOID DEGRADING THE SUBGRADE. PROOFROLLING SHALL BE PERFORMED WITH A HEAVILY 'LOADED DUMP TRUCK OR WITH SIMILAR APPROVED CONSTRUCTION EQUIPMENT. SOFT MATERIALS ENCOUNTERED SHALL BE COMPLETELY EXCAVATED AND REPLACED WITH APPROVED FILL MATERIALS. BENCHING : BENCHING SHALL CONSIST OF A SERIES OF HORIZONTAL CUTS BEGINNING AT THE TOE OF THE EXISTING SLOPED SURFACE AND CONTINUING AT EACH VER1r►CAL INTERSECTION OF THE PREVIOUS CUT. SATISFACTORY MATERIAL REMOVED DURING THIS OPERATION SHALL BE RECOMPACTED ALONG WITH THE NEW EMBANKMENT MATERIAL AS GENERALLY SPECIFIED, EXCEPT MOISTURE CONTENT SHALL BE MAINTAINED WITHIN 10 PERCENT OF THE OPTIMUM. BENCHING SHALL BE REQUIRED FOR ALL FILL EMBANKMENTS PLACED ON EXISTING SLOPES AS FOLLOWS : SLOPES STEEPER THAN 4:1 BUT NOT STEEPER THAN 11/2:1, THE (BENCH SHALL BE AT LEAST 6 FT. IN WIDTH. EMBANKMENT : EMBANKMENT WORK SHALL CONSIST OF THE PLACEMENT AND COMPACTION OF FILL MATERIAL ABOVE THE NATURAL GROUND OR OTHER SURFACE IN CONIFORMANCE WITH THE DRAWINGS. MATERIALS RESPONSIBLE LAND DISTURBER DESIGNATION APPROVED SOILS USED IN COMPACTED FILLS SHALL BE FREE OF DEBRIS AND FIBROUS ORGANIC MATERIAL. FROZEN MATERIAL WILL NOT BE PERMITTED IN THE FILL. THE PERSON IDENTIFIED BELOW IS DESIGNATED AS THE RESPONSIBLE LAND DISTURBER WHO WILL BE SATISFACTORY MATERIALS SHALL COMPRISE THOSE CLASSIFIED IN ACCORDANCE WITH 'THE IN CHARGE OF AND RESPONSIBLE FOR CARRYING OUT THE LAND DISTURBING ACTIVITY ASSOCIATED WITH THIS PROJECT. THIS PERSON MEETS THE APPLICABLE REQUIREMENTS OF VIRGINIA CODE SECTION 10.1-563 UNIFIED SOIL SYSTEM, ASTM D-2487 AS GW, GP, SW, SIP, SM, AND SC. THESE AND 10.1-566 BY VIRTUE OF THE FOLLOWING: MATERIALS SHALL POSSESS A MAXIMUM DRY DENSITY OF 100 •/CU.FT. OR GREATER REFERENCED TO ASTM D-698 STANDARD PROCTOR. SOILS SHALL HAVE A LIQUID LIMIT ___-_-_RESPONSIBLE LAND DISTURBER CERTIFICATE LESS THAN 40 PERCENT AND A PLASTICITY INDEX LESS THAN 15. ----------- OCR CERTIFICATION FOR COMBINED ADMINISTRATOR, ADMINISTRATOR, PLAN REVIEWER, OTHER MATERIALS, WHEN APPROVED BY ENGINEERING, MAY BE PERMITTED IN FILL INSPECTOR, OR CONTRACTOR. AREAS. -----------VIRGINIA PROFESSIONAL ENGINEER, LAND SURVEYOR, LANDSCAPE ARCHITECT, OR ARCHITECT, UNSATISFACTORY SOILS INCLUDE THOSE CLASSIFIED AS PT, OH OR OL, CH, MH, CL RESPONSIBLE LAND DISTURBER CONTACT INFORMATION: AND ML,AS REFERENCED TO ASTM D-2487. COMPACTION : NAME (SIGNATURE)------------------------------------------------------------------ DATE ------------------ COMPACTION EQUIPMENT SHALL CONSIST OF VIBRATORY OR TAMPING ROLLERS, NAME (PRINT)___DAVID PERRY__________________________________________________________________ SHEEPSFOOT ROLLER, PNUEMATIC-TIRED ROLLERS, THREE -WHEEL POWER ROLLERS, WALK CERTIFICATION / REGISTRATION NUMBER- _`t2567_______ BEHIND VIBRATORY ROLLERS, VIBRATORY PLATE OR OTHER APPROVED EQUIPMENT WELL COMPANY_____ DOMINION ENERGY __ ________________ ______ _____ _____ __ _____________ ____ ___ ____ SUITED TO THE SOIL BEING COMPACTED. MAILING ADDRESS_ 2501 GRAYLAND AVENUE_________________________________________________________ ------------) RICHMOND. VA 23220 '------------------------------------------------------------------------------- APPROVED FILL MATERIAL SHALL BE PLACED IN UNIFORM HORIZONTAL LIFTS OF 257-4631 TELEPHONE_____(804__------------ FAX _-___-_-__-__--__-_____-__-_-___-___ APPROXIMATELY 8" DEPTH (LOOSE MEASUREMENT), EXCEPT FOR ROAD MATERIALS ABOWE E-MAIL__david.k.parrggdominionenercZy.00m_-_______-_ - SUBGRADE ELEVATION AND THE UPPER 12" OF BUILDING PADS WHICH REQUIRE 6" LIFTS. WHERE WALK BEHIND ROLLERS AND VIBRATORY PLATE COMPACTORS ARE USED, THE THIS DESIGNATION MAY ONLY BE CHANGED BY A PLAN COVER SHEET REVISION THAT MUST BE SUBMITTED LIFT THICKNESS SHALL NOT EXCEED 4". TO THE VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY (DEG) FOR VERIFICATION AND APPROVAL. GENERALLY, FILLS SHALL BE COMPACTED TO AT LEAST 95 PERCENT OF THE STANDARD THE FOLLOWING INFORMATION MUST BE SUBMITTED TO DEG AT LEAST TWO (2) WEEKS IN ADVANCE OF THE PROCTOR MAXIMUM DRY DENSITY ( ASTM D-698 ), WITH MOISTURE CONTENT RANGING COMMENCEMENT OF LAND DISTURBING ACTIVITIES. NOTIFICATIONS SHALL BE SENT BY EMAIL TO BETWEEN LESS THAN 3 PERCENT UP TO THE OPTIMUM AS DETERMINED BY THE PROCTOR linearpro jectsadeq.virginia.gov DENSITY TEST. THE UPPER 12" OF ROADBEDS AND CONTROL ENCLOSURE BUILDING PADS 1: is PROJECT NAME OR PROJECT NUMBER (INCLUDING ANY ASSOCIATED CGP PERMIT NUMBER); REQUIRE 98 PERCENT COMPACTION REFERENCED TO ASTM D-698, WITH MOISTURE PROJECT LOCATION (INCLUDING NEAREST INTERSECTION, LATITUDE & LONGITUDE, ACCESS POINT); m. ON -SITE PROJECT MANAGER NAME AND CONTRACT INFORMATION; CONTENT MAINTAINED WITHIN 2 PERCENT OF THE OPTIMUM. iv: RESPONSIBLE LAND DISTURBER (RLD) NAME AND CONTACT INFORMATION; EACH SUCCESSIVE LIFT WILL BE PLACED ON FIRM APPROVED SUBGRADE OR COMPACTED v: PROJECT DESCRIPTION; FILL. WHERE PREVIOUS LIFTS ARE FOUND TO BE UNACCEPTABLE, THE AREA WILL BE vi: ACREAGE OF DISTURBANCE FOR PROJECT; vii; PROJECT START AND FINISH DATE: SCARIFIED, AERATED OR MOISTENED, RECOMPACTED OR REMOVED, AND REPLACED AS viu: ANY VARIANCES/EXEMPTIONS/WAIVERS ASSOCIATED WITH THIS PROJECT REQUIRED. DRAINAGE PLEASE CONTACT DOMINION PERMITTING (LAURA MAUSOLF) AT 804.775.5279 TO SET UP THE FILL SURFACE SHALL BE ADEQUATELY MAINTAINED DURING CONSTRUCTION. THE A PRE -CONSTRUCTION MEETING, SURFACE SHALL BE SLOPED TO ACHIEVE SUFFICIENT DRAINAGE, AND TO PREVENT WATER FROM PONDING ON THE FILL. IF PRECIPITATION IS EXPECTED WHILE FILL PROJECT DESCRIPTION: CONSTRUCTION IS TEMPORARILY HALTED, THE SURFACE SHALL BE ROLLED WITH RUBBER- THIS PROJECT IS TO EXPAND AND CONSTRUCT THE GORDONSVILLE SUBSTATION TO PROVIDE TIRED OR STEEL -DRUMMED EQUIPMENT TO IMPROVE SURFACE RUNOFF. FOR PLACEMENT IMPROVED ELECTRICAL SERVICE AND RELIABILITY TO THE GORDONSVILLE AREA IN ALBEMARLE, DURING OR AFTER DIFFICULT WEATHER CONDITIONS. WET OR FROZFN MATFRIAI SHAI -I_ LOUISA AND ORANGE COUNTIES. BE REMOVED. FINISHED GRADE TOLERANCES : DOMINION THE TOP OF EARTHWORK FOR SUBSTATION PAD AND ROADWAY TRAVEL AREAS SHALL BE DRAWING # DRAWING LIST WITHIN 0.10 FT. ABOVE OR BELOW THE THEORETICAL GRADE. EARTH SLOPES : 0000-000 1 OF 20 EXCAVATED SLOPES STEEPER THAN 3:1 SHALL BE ROUGH GRADED IN A MANNER TO PROVIDE HORIZONTAL RIDGES AND GROOVES HAVING AN AVERAGE DEVIATION NO GREATER THAN 0.75 FT. FROM THE THEORETICAL LINE OF THE TYPICAL CROSS 0000-000 2 OF 20 SECTION. EXCAVATED SLOPES 3:1 OR FLATTER SHALL BE UNIFORMLY FINISHED AND SHALL NOT DEVIATE FROM THE THEORETICAL PLANE SURFACE BY MORE THAN 0.50 FT. 0000-000 3 OF 20 EMBANKMENT SLOPES STEEPER THAN 3:1 SHALL BE ROUGH GRADED IN A MANNER TO PROVIDE HORIZONTAL RIDGES AND GROOVES NOT MORE THAN 0.50 FT. FROM THE THEORETICAL LINE OF THE TYPICAL CROSS SECTION. 0000-000 4 OF 20 EMBANKMENT SLOPES 3:1 OR FLATTER SHALL BE UNIFORMLY FINISHED AND SHALL NOT DEVIATE FROM THE THEORETICAL PLANE SURFACE BY MORE THAN 0.50 FT. 0000-000 5 OF 20 ROCK SLOPES : SHALL NOT DEVIATE FROM A PLANE SURFACE BY MORE THAN 2.0 FT. AND SHALL 0000-000 6 OF 20 NOT DEVIATE FROM THEIR THEORETICAL LOCATION BY MORE THAN 2.0 FT. MEASURED ALONG ANY LINE PERPENDICULAR TO THE THEORETICAL SLOPE LINE. MATERIALS / INSTALLATION 0000-000 7 OF 20 VDOT : ITEMS REFERENCED TO THE VIRGINIA DEPARTMENT OF TRANSPORTATION SHOWN 0000-000 8 OF 20 ON THE DRAWINGS SHALL CONFORM TO THE REQUIREMENTS OF THEIR LATEST STANDARDS AND SPECIFICATIONS. 0000-000 9 OF 20 MANUFACTURERS' ITEMS : ITEMS REFERENCED TO SPECIFIC MANUFACTURERS OR BRAND NAMES SHALL BE SUBJECT 0000-000 10 OF 20 TO ANY RECOMMENDATIONS OR LIMITATIONS PERTAINING TO THEIR INSTALLATION OR USE. 0000-000 11 OF 20 REQUESTS FOR SUBSTITUTIONS MUST BE APPROVED BY ENGINEERING. SUFFICIENT INFORMATION REGARDING REQUESTS MUST BE RECEIVED BY ENGINEERING 10 DAYS 0000-000 12 OF 20 IN ADVANCE OF APPROVAL. I I t 6 9 2 — ! - ` }.: 4f I x t.. I g o. t VI I I t II m o VEP DB A 3 5 SUBSTATION EQUIPMENT LAYOUT (NOT TO SCALE) 0000-000 13 OF 20 0000-000 14 OF 20 0000-000 15 OF 20 0000-000 16 OF 20 Submittal Type 00000000-000 17 OF 20 Reviewed and Approved by the COmmL�it+ Dev lopment Department 0000-000 18 OF 20 - Date 10 4 got File# Zpt 440 'l ignature 0000-000 19 OF 20 SUBSTATION GENERAL EQUIPMENT EGE D 10 CONTROL ENCLOSURE Q TRANSMISSON BACKBONE STRUCTURE Q SWITCH STRUCTURE ® OVERHEAD ALUMINUM BUS 50 CABLE TROUGH 0 CAPACITOR BANKS Q EQUIPMENT ACCESS 80 BREAKER 09 TRANSFORMER 0000-000 20 OF 20 COVER SHEET, SPECIFICATIONS/GENERAL NOTES EROSION & SEDIMENT CONTROL GENERAL NOTES & NARRATIVE EROSION & SEDIMENT CONTROL MINIMUM STANDARDS AND DETAILS EROSION & SEDIMENT CONTROL DETAILS PHASE I EROSION & SEDIMENT CONTROL AND DEMOLITION PLAN PHASE II EROSION & SEDIMENT CONTROL PLAN SITE PLAN GRADING & DRAINAGE PLAN STORMWATER MANAGEMENT PLAN & PROFILES STORMWATER MANAGEMENT DETAILS LANDSCAPE PLAN LANDSCAPE SPECIFICATIONS CONSTRUCTION DETAILS V� V SITE �0 GO GORO �o co 2 860 o<c• 231 TO KEG 'Av VICINITY MAP SCALE: 1 "=2,000' GENERAL SITE INFORMATION: OWNER: VIRGINIA ELECTRIC & POWER COMPANY ADDRESS: 3245 LOVERS LANE GORDONSVILLE, VA 22942 MAGISTERIAL DISTRICT: RIVANNA LAT. - LONG.: 38° 07'35.96"N, 78° 13'17.71"W ZONING: RA - RURAL AREAS PARCEL ID: 03700-00-00-011AO USE: ELECTRICAL SUBSTATION OVERLAY DISTRICTS: N/A PARCEL ACREAGE: 9.04 ACRES (2.41 ACRES EX. SUBSTATION) TREE COVERAGE: 3.15 ACRES/137,523 S.F. WATER AND SEWER: NONE EXISTING OR PROPOSED WETLANDS IMPACTS: ' 0.14 ACRES IMPACTED LAND DISTURBANCE 2.74 ACRES PARKING: NONE EXISTING OR PROPOSED PROPOSED BUILDINGS: NONE OFFSITE LAND NONE PROPOSED. ANY OFFSITE LAND DISTURBING ACTIVITY DISTURBANCE: ASSOCIATED WITH THIS PROJECT MUST HAVE AN APPROVED EROSION AND SEDIMENT CONTROL PLAN. STORMWATER MANAGEMENT NARRATIVE LAND DISTURBANCE PERMIT: CONTACT DEQ TWO (2) WEEKS PRIOR TO ANY LAND DISTURBING ACTIVITY. SEE DETAILS IN THE RESPONSIBLE WATER QUALITY LAND COVER LAND DISTURBER DESIGNATION BLOCK ON THIS SHEET FOR STORMWATER MANAGEMENT DETAILS. DRAINAGE AREA MAPS & ROUTING DIAGRAMS ENERGY BALANCE STORMWATER MANAGEMENT PRE -DEVELOPED 10-YEAR AND 100-YEAR ROUTING STORMWATER MANAGEMENT POST -DEVELOPED 10-YEAR AND 100-YEAR ROUTING STORMWATER MANAGEMENT OPEN CHANNELS SURVEY DRAWING LIST 1 OF 1 TOPOGRAPHIC SURVEY OF GORDONSVILLE SUBSTATION ALL EXISTING AND PROPOSED GRADES SHOWN ON THIS SITE PLAN ARE DIRT GRADES. REVISED: SEPTEMBER 21, 2018 DATE* JUNE 20, 2018 CALL MISS UTILITY BEFORE DIGGING 1-800-552-7001 OR 811 VIRGINIA STORMWATER REQUIRED PRIOR TO ANY LAND DISTURBANCE. AN APPROVED MANAGEMENT PROGRAM VSMP MUST BE ACCOMPANIED WITH A STORMWATER PERMIT (VSMP): POLLUTION PREVENTION PLAN (SWPPP) PRIOR TO CONSTRUCTION. FLOODPLAIN: ZONE X, FEMA FLOOD INSURANCE RATE COMPANY PANEL NUMBER 200, MAP NO. 51003CO200D, FEBRUARY 4, 2005. SR. SITING AND PERMITTING SPECIALIST: LAURA M. NAAUSOLF (804) 775-5279, FAX (804) 771-6303 EMAIL: LAUfRA.M.MAUSOLFODOMINIONENERGY.COM DOMINION \VIRGINIA POWER ONE JAMES RIVER PLAZA, 12TH FLOOR 701 EAST (CARY STREET RICHMOND, VIRGINIA 23219 DOMINION CIVIL SITE DESIGN ENGINEER: TOM RICHE:SON JR., PE (804) 257-•4714 DOMINION ENERGY 2400 GRAIYLAND AVENUE RICHMOND, VIRGINIA 23220 CIVIL ENGINEER OF RECORD: KYLE E. LACLAIR, PE (804) 767--2206, FAX (804) 767-2182 EMAIL: KLACLAIRQGEOSYNTEC.COM GEOSYNTEC CONSULTANTS, INC. 9211 ARBORETUM PARKWAY, SUITE 200 RICHMOND, VIRGINIA 23236 Off' G m o f dW 40 KYLE F . LaCLAIR 039540 Y iC. N0na SIQ-IONPr Otte Z�: Q) LQ 0 moo. o o LL_ N r Ld 0) .00 J W N a ce wiz � O "V NE> W p U to Q o o z 0 3 U 3 Onx 3 C 0 E Law) 0 c InL 0000-000 Sheet l of 20 Total Sheets 0 1 2 3 4 5 7 8 9 10 11 12 EROSION AND SEDIMENTATION CONTROL NOTES - DOMINION 1. CONTRACTOR SHALL HAVE AVAILABLE A COPY OF THE LATEST VERSION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. CONTRACTOR SHALL BE RESPONSIBLE FOR THE INSTALLATION, MAINTENANCE, AND REMOVAL OF ALL CONTROL DEVICES. THESE DEVICES SHALL MEET OR EXCEED THE HIGHER OF THE REQUIREMENTS COVERED IN THIS HANDBOOK OR THE CONTROLLING AUTHORITY. 2. EROSION AND SEDIMENT CONTROL DEVICES, AS SHOWN ON THE PLAN, SHALL BE INSTALLED AS THE FIRST STEP OF THE GRADING PROCESS. 3. TEMPORARY DEVICES SHALL BE REPAIRED OR REPLACED 11MMEDIATELY IF THEY CEASE TO FUNCTION AS INTENDED. TEMPORARY CONTROLS SHALL BE REMOVED WHEN AREAS ABOVE THEN BECOME STABILIZED TO THE SATISFACTION OF THE PLAN APPROVING AUTHORITIES. 4. IT SHALL BE THE RESPONSIBILITY OF THE CONTRACTOR TO KEEP SURROUNDING DRAINAGE BEDS FREE OF SILT CAUSED BY EROSION DURING CONSTRUCTION. 5. NO DISTURBED AREA SHALL REMAIN DENUDED FOR LONGER THAN 7 DAYS, EXCEPT THOSE CONTINUOUSLY BEING WORKED OR BUILT UPON. 6. ELECTRIC POWER, TELEPHONE, AND GAS SUPPLY TRENCHES ARE TO BE COMPACTED, SEEDED, AND MULCHED WITHIN 7 DAYS AFTER BACKFILL. ALL EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. 7. THE SITE STONE IS PART OF THE PERMANENT STABILIZATION OF THE SITE. IT SHALL BE APPLIED AS SOON AS PRACTICAL AFTER FOUNDATION INSTALLATIONS ARE COMPLETE. 8. TEMPORARY OR PERMANENT SEEDING SHALL BE ACCOMPLISHED WITHIN 7 DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SUBSITAT10N LOT. 9. TOPSOIL SHALL BE APPLIED IN 2-6 INCH LAYERS ON AREAS ROUGHENED USING STANDARD ROUGHENING PROCEDURES. ALL AREAS DESIGNATED TO BE SEEDED SHALL BE TOPSOILED WHEN SUFFICIENT MATERIAL IS AVAILABLE. 10. UNLESS OTHERWISE NOTED, ALL DITCHES AND OTHER GRASS LINED WATER WAYS SHALL BE LIMED, FERTILIZED, SEEDED, AND STABILIZED WITH EXCELSIOR BLANKET (CURLEX) IMMEDIATELY AFTER CONSTRUCTION. 11. TEMPORARY AND PERMANENT SEEDING SHALL CONFORM T01 THE LATEST SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. GENERAL SPECIFICATIONS FOLLOW: REFER TO SHEET 4 FOR TEMPORARY AND PERMANENT SEEDING SPECIFICATIONS. GENERAL EROSION AND SEDIMENTATION CONTROL NOTES - VESCH ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS 9VAC25-841.0 EROSION AND SEDIMENT CONTROL REGULATIONS. ES-2: THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRECONSTRUCTION CONFERENCE,ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. ES-3: ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. ES-4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON SITE AT ALL TIMES. ES-5: PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND) SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. ES-7: ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. ES-8: DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. ES-9: THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. PROJECT DESCRIPTION: THE PURPOSE OF THIS PROJECT IS TO EXPAND THE EXISTING GORDONSVILLE ELECTRICAL SUBSTATION LOCATED ON AN EXISTING VIRGINIA ELECTRIC AND POWER COMPANY PARCEL AT 3245 LOVERS LANE, GORDONSVILLE, VA 22942. THE PROPERTY IS ZONED IRA (RURAL AREAS). THIS SITE IS BOUND BY ONE (1) PROPERTY THAT IS ALSO ZONED RA TO THE 4WEST, NORTH AND EAST, WHICH IS ALSO DESIGNATED AS A COUNTY CONSERVATION EASEMENT OVERLAY AREA. THE PROPERTY ACROSS LOVERS LANE TO THE SOUTH IS ALSO ZONED RA. THE PROPERTY IS 9.04 ACRES WITH EXISTING SITE CONDITIONS (CON'T) THERE IS ONE (1) MAIN ACCESS TO THE SUBSTATION OFF OF LOVERS LANE. THIS ACCESS IS COMPRISED OF COMPACTED GRAVEL. THE SITE IS IN ZONE X PER FEMA FLOOD INSURANCE RATE COMMUNITY PANEL NUMBER 200, MAP NO. 51003CO2000 DATED FEBRUARY 4, 2005. ADJACENT PROPERTIES: THIS SUBSTATION PARCEL IS BOUND BY RURAL AREA (RA) ZONED LAND WHICH S ALSO IN A COUNTY CONSERVATION EASEMENT OVERLAY TO THE WEST, NORTH AND EAST. THIS ADJACENT PARCEL IS PRIMARILY WOODED ON ALL SIDES, WITH A PASTURE BEYOND THE WOODS TO THE NORTH. THE PARCEL TO THE SOUTH (ACROSS LOVERS LANE) IS ALSO ZONED RA BUT IS PRIMARILY OPEN PASTURE. AN EXISTING WETLAND IS UPSTREAM OF THE SUBSTATION PARCEL (TO THE WEST). OFF -SITE AREAS: OFF -SITE AREAS ARE NOT ANTICIPATED TO BE USED. SOILS MAP 5r/ 19 B 238 57B 19C �9C 4 L� 9 X - -LOVERS SOILS: THE FOLLOWING FIVE (5) SOIL TYPES ARE IDENTIFIED WITHIN THE SITE DEVELOPMENT AREA: (1) 798 STARR SILT LOAM, 2 TO 7PERCENT SLOPES, HSG Bc (2) 196 CULLEN LOAM, 2 TO 7 PERCENT SLOPES, HSG Bc (3) 19C CULLEN LOAM, 7 TO 15 PERCENT SLOPES, HSG Bo (4) 19C - CULLEN LOAM, 15 TO 25 PERCENT SLOPES, HSG B; AND (5) 578 MOUNT LUCAS SILT LOAM, 2 TO 7 PERCENT SLOPES, HSG C/D. CRITICAL AREAS: THIS SITE HAS A RELATIVELY LOW RISK FOR EXCESSIVE EROSION: HOWEVER, THE CONTRACTOR SHALL IMPLEMENT PROTECTIVE MEASURES TO MINIMIZE SEDIMENTATION DEPOSITS ON DOWN GRADIENT PROPERTIES. THE OUTFALL AND PERENNIAL STREAM TO THE EAST AND NORTH OF THE SUBSTATION IS PART OF AN ALBEMARLE COUNTY 100-FOOT STREAM BUFFER AREA. THIS STREAM BUFFER ALSO SERVES AS A WETLAND FEATURE. THE STREAM BUFFER/WETLAND AREAS WILL BE IMPACTED DURING THE EXPANSION OF THIS SUBSTATION. THIS PROJECT IS EXEMPT FROM IMPACTING THE STREAM BUFFER, HOWEVER AN UPDATED STREAM BUFFER MAP SHALL BE PROVIDED TO ALBEMARLE COUNTY DURING THE DESIGN PROCESS. THE WETLAND, AREA REACHS TO THE ADJACENT PROPERTY TO THE WEST AND WILL BE PARTIALLY IMPEDED BY FILL GRADING. PROPOSED FILL SLOPES ALONG THE NORTH SIOE WILL BE 1.50 SLOPES AND PROTECTED BY RIP RAP. ALL OTHER SLOPES WILL BE 3:1 AND PROTECTED BY SOIL STABILIZATION BLLANKETS AND PERMANENT SEEDING. THIS FILL GRADING WILL REQUIRE A PROPOSED TOE CHANNEL TO ENSURE PROPER DRAINAGE FROM THE WEST AND TO KEEP THE EXISTING WETLAND HYDRATED. THERE WAS ONE (1) ALBEMARLE COUNTY CRITICAL SLOPE AREA IDENTIFIED ON THIS PARCEL. THIS CRITICAL SLOPE ARE HAS SLOPES GENTLER THAN 4:1, THEREFORE NO IMPACTS TO CRITICAL SLOPE AREAS WILL BE OF ANY CONCERN. LASTLY, THERE ARE EXISTING HEMLOCK TREES AND OTHER MATURE TREES THAT MUST BE PROTECTED AT ALL EXTENTS PRACTICAL. EROSION AND SEDIMENT CONTROL MEASURES UNLESS OTHERWISE NOTED, ALL STRUCTURAL AND VEGETATIVE EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED ACCORDING TO THE LATEST EDITION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK (VESCH), WHICH ADHERES TO THE VIRGINIA EROSION AND SEDIMENT CONTROL REGULATIONS. STRUCTURAL PRACTICES 1. MAT STABILIZATION (TE VEP 8000-17-00) 2. CONSTRUCTION ENTRANCE - 3.02 3. CONSTRUCTION ROAD STABILIZATION - 3.03 4. SILT FENCE - 3.05 5. SUPER SILT FENCE SEE SHEET 4 6. CULVERT INLET PROTECTION - 3.08 7. TEMPORARY DIVERSION DIKE - 3.09 8. TEMPORARY FILL DIVERSION - 3.10 9. TEMPORARY SEDIMENT BASIN - 3.14 10. STORMWATER CONVEYANCE CHANNEL - 3.17 11. OUTLET PROTECTION - 3:18 12. RIPRAP - 3.19 13. ROCK CHECK DAMS - 3.20 14. TREE PRESERVATION AND PROTECTION - 3.38 VEGETATIVE PRACTICES 1. SURFACE ROUGHENING - 3.29 2. TOPSOIL - 3.30 3. TEMPORARY SEEDING - 3.31 4. PERMANENT SEEDING - 3.32 PERMANENT STABILIZATION ALL AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH PERMANENT SEEDING IMMEDIATELY FOLLOWING FINISH GRADING. SEEDING SHALL BE APPLIED IN ACCORDANCE WITH STANDARD AND SPECIFICATION 3.32, PERMANENT SEEDING. MULCH WILL BE USED IN ALL SEEDED AREAS AFTER SEED, FERTILIZER, AND LIME HAVE BEEN APPLIED. STORMWATER MANAGEMENT THE APPLICABLE SITE AREA IS CALCULATED TO BE 9.02 ACRES. IN ACCORDANCE WITH THE VIRGINIA RUNOFF REDUCTION METHOD (RRM), PHOSPHOROUS REMOVAL MUST ACHIEVE 5.40 POUNDS PER YEAR, PHOSPHORUS REMOVAL WILL BE MITIGATED VIA OFFSITE CREDITS THROUGH THE RCP'S LANDING NUTRIENT BANK FACILITY. THE SITE OUTFALL(OUTFALL 1) IS ADEQUATE USING THE RRM AND THE ENERGY BALANCE EQUATION. THE PRE -DEVELOPED 1-YEAR AND 10-YEAR PEAK DISCHARGES CONSIDERING ENERGY BALANCE ARE 3.17 CFS AND 17.43 CFS RESPECTIVELY. THE POST -DEVELOPED 1-YEAR AND 10-YEAR PEAK DISCHARGES ARE 2.27 CFS AND 16.51 CFS RESPECTIVELY. MAINTENANCE IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. THE FOLLOWING MEASURES WILL BE CHECKED AND MITIGATED ACCORDINGLY. MAT STABILIZATION TIMBER MATS TYPICALLY CONSIST OF WOOD PLANKS FASHIONED AROUND A FRAME (14-FOOT X 8-FOOT TYPICAL). MATERIALS AND SIZES VARY DEPENDING UPON THE SOURCE FOR TIMBER MATTING. TIMBER MATS SHALL BE PLACED ALOND THE NORTHEAST SIDE OF THE SITE ADJACENT TO THE PROPERTY LINE TO PROTECT THE WETLANDS AND RESULTING EROSION PRODUCED FROM CONSTRUCTION. CONSTRUCTION ENTRANCE - 3.02 A CONSTRUCTION ENTRANCE WILL BE INSTALLED AT THE SITE FOR VEHICLE INGRESS AND EGRESS TO REDUCE THE AMOUNT OF SEDIMENT TRANSPORTED ONTO PAVED PUBLIC FACILITIES AND ROADS BY VEHICULAR TRAFFIC OR RUNOFF. THE CONSTRUCTION ENTRANCE SHALL BE INSTALLED FOLLOWING VESCH STANDARD 3.02. CONSTRUCTION ROAD STABILIZATION - 3.03 CONSTRUCTION ROAD STABILIZATION SHALL BE IMPLEMENTED AS SHOWN ON THE EROSION AND SEDIMENT CONTROL PLANS TO DIVERT CONSTRUCTION AND OTHER VEHICULAR TRAFFIC AROUND THE MAJORITY OF SITE CONSTRUCTION. CONSTRUCTION ROAD STABILIZATION SHALL BE INSTALLED AND MAINTAINED IN ACCORDANCE WITH VESCH STANDARD 3.03. SILT FENCE - 3.05 SILT FENCE BARRIERS SHALL BE INSTALLED DOWNSLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT -LADEN RUNOFF FROM SHEET FLOW AS INDICATED ON THE E&SC PLANS. ALL MAINTENANCE PRACTICES SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.05, SUPER SILT FENCE - SEE DETAIL ON SHEET 4 SUPER SILT FENCE SHALL BE INSTALLED DOWN GRADIENT OF ALL STEEP SLOPES SHOWN ON THE PLANS. SUPER SILT FENCE SHALL BE INSTALLED IN ACCORDANCE WITH THE DETAIL ON SHEET 4. CULVERT INLET PROTECTION - 3.08 CULVERTS SHALL BE PROTECTED DURING CONSTRUCTION. SEDIMENT -LADEN WATER SHALL BE FILTERED BEFORE ENTERING CULVERTS. CULVERT INLET PROTECTION SHALL BE INSTALLED AND MAINTAINED IN ACCORDANCE WITH VESCH STANDARD 3.08. TEMPORARY DIVERSION DIKE - 3.09 DIVERSION DIKES SHALL BE INSTALLED TO CONVEY SEDIMENT -LADEN RUNOFF INTO THE SEDIMENT BASIN. BEFORE FINAL STABILIZATION, THE DIVERSION SHALL BE INSPECTED AFTER EVERY RAINFALL AND AT LEAST ONCE EVERY TWO WEEKS. ALL MAINTENANCE PRACTICES SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.09. TEMPORARY FILL DIVERSION - 3.10 A FILL DIVERSION SHALL BE INSTALLED DURING THE PHASE II EROSION CONTROL PLANS TO DIRECT SEDIMENT -LADEN STORMWATER TO A TRAPPING DEVICE. FILL DIVERSIONS ARE IMPLEMENTED TO DIVERT STORM RUNOFF AWAY FROM UNPROTECTED DOWNHILL FILL SLOPES. TEMPORARY FILL DIVERSIONS SHALL BE INSTALLED FOLLOWING VESCH STANDARD 3.10. TEMPORARY SEDIMENT BASIN - 3.14 A TEMPORARY SEDIMENT BASIN SHALL BE CONSTRUCTED PRIOR TO ANY INITIAL CLEARING OF THE SITE. THE SEDIMENT BASIN SHALL BE CONSTRUCTED PER THE GRADING SHOWN ON THE PHASE I & II E&SC PLANS AS WELL AS PER THE E&SC DETAILS. SEDIMENT SHALL BE REMOVED AND THE BASIN RESTORED TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE-HALF THE DESIGN VOLUME OF THE WET STORAGE. RISERS, OUTLET CULVERTS, DEWATERING DEVICE AND EMERGENCY SPILLWAY SHALL BE REGULARLY CHECKED TO ENSURE THEY ARE PROPERLY FUNCTIONING. ALL MAINTENANCE PRACTICES SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.14. STORMWATER CONVEYANCE CHANNEL - 3.17 SEVERAL STORMWATER CONVEYANCE CHANNELS WILL BE IMPLEMENTED AS PERMANENT CHANNELS AS SHOWN ON SHEETS 6 AND 8, AS WELL AS ON SHEET 13 FOR CHANNEL LININGS. STORMWATER CONVEYANCE CHANNELS SHALL FOLLOW THE GUIDELINES IN VESCH STANDARD 3.17 OUTLET PROTECTION - 3.18 OUTLET PROTECTION SHALL BE INSTALLED AT THE END OF PROPOSED SEDIMENT BASIN OUTLET CULVERT AS SHOWN ON THE PHASE I EROSION & SEDIMENT CONTROL PLAN. ONCE THE ENERGY DISSIPATOR IS CONSTRUCTED, THE OUTLET PROTECTION SHALL BE REMOVED AND REPLACED WITH A RIP RAP CHANNEL IN THE AREA WHERE REMOVED. OUTLET PROTECTION SHALL BE CHECKED FOR SEDIMENT ACCUMULATION AFTER EACH RUNOFF -PRODUCING STORM EVENT. SEDIMENT SHOULD BE REMOVED FROM OUTLET PROTECTION BEFORE THE OUTLET STONE IS RENDERED UNEFFECTIVE. ALL MAINTENANCE PRACTICES SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.18. 2.41 EXISTING IMPERVIOUS ACRES. THE PROPOSED SUBSTATION EXPANSION IS TO COMPRISE OF 0.63 5. MULCHING - 3.35 RIPRAP - 3.19 ADDITIONAL IMPERVIOUS ACRES AND 2.74 ACRES OF LAND DISTURBANCE. THE SITE HYDROLOGY 6. SOIL STABILIZATION BLANKETS AND MATTING - 3.36 RIPRAP SLOPE PROTECTION SHALL BE PLACED ON 1.5:1 SLOPES AND OTHER STEEP SLOPES AS CONVEYS TO A TRIBUTARY OF HAPPY CREEK, EAST OF THE SUBSTATIION. THE SITE OUTFALL IS 7. DUST CONTROL - 3.39 SHOWN ON THE PLANS. PROPOSED GRADES SHOWN ON THE PLANS ARE DIRT GRADES WITH PART OF THE SOUTH ANNA RIVER -DOVE FORK WATERSHED Y001 (HUC;12 020801060101). 24-INCH DEPTH OF CLASS IRIPRAP PLACED ON TOP OF DIRT GRADE. RIPRAP IS ALSO REQUIRED MANAGEMENT STRATEGIES ON THE EMERGENCY SPILLWAY CHANNEL SHOWN ON BOTH PHASE I AND II EROSION AND EXISTING SITE CONDITIONS: 1. CONSTRUCTION WILL BE SEQUENCED SO THAT GRADING OPERATIONS CAN BEGIN AND END AS SEDIMENT CONTROL PLANS. ALL MAINTENANCE PRACTICES SHALL FOLLOW THE GUIDELINES SET THE EXISTING SITE CONSISTS OF A MIXTURE OF WOODS, OPEN GRASSLANDS (TRANSMISSION QUICKLY AS POSSIBLE. IN VESCH STANDARD 3.19. RIGHT-OF-WAY) AND STONE COVERED SUBSTATION SURFACE. THE EXIS71NG TOPOGRAPHY CONSISTS 2. THE SITE TEMPORARY SEDIMENT BASIN WILL BE INSTALLED AS A FIRST STEP IN GRADING OF 10Y -/- GRADES TO THE SOUTH AND EAST OF THE SUBSTATION. THE AREA TO THE NORTH AND WILL BE SEEDED AND MULCHED IMMEDIATELY FOLLOWING INSTALLATION. ROCK CHECK DAM - 3.20 CONSISTS OF STEEP GRADES (UP TO 3:1 SLOPES IN AREAS) AND AREA, TO THE WEST CONSISTS OF 3. TEMPORARY SEEDING OR OTHER STABILIZATION WILL FOLLOW SEVEN (7) DAYS AFTER CHECK DAMS SHALL BE INSTALLED ALONG PROPOSED DITCHES PRIOR TO FINAL STABILIZATION L m i o A BERMED AREA. THE SUBSTATION SITE IS RELATIVELY FLAT WITH GRADES LESS THAN 3/.. THE GRADING. AS SHOWN ON THE PLANS. CHECK DAMS SHALL BE USED TO REDUCE VELOCITIES AND MANAGE a a +) ° E z' 4j x m SITE CURRENTLY EXHIBITS SHEET FLOW TO THE EXISTING TRIBUTARY OF HAPPY CREEK, WHICH IS 4. AREAS WHICH ARE NOT TO BE DISTURBED WILL BE CLOSELY MARKED BY FLAGS, SIGNS, ETC. SEDIMENT IN DITCHES DURING CONSTRUCTION. SEDIMENT SHOULD BE REMOVED WHEN IT DELINEATED AS A WETLAND FOR THE MAJORTY OF THE TRIBUTARY. 5. THE JOB SUPERINTENDENT SHALL BE RESPONSIBLE FOR THE INSTALLATION AND REACHES ONE-HALF OF THE ORIGINAL HEIGHT OF THE MEASURE. ALL MAINTENANCE PRACTICES a m 0 THERE IS ONE (1) MAIN ACCESS TO THE SUBSTATION OFF OF LOVERS LANE. THIS ACCESS IS MAINTENANCE OF ALL EROSION AND SEDIMENT CONTROL PRACTICES. SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.20. OF COMPACTED GRAVEL. THE SITE IS IN ZONE X PER FEMIA FLOOD INSURANCE RATE 6. AFTER ACHIEVING ADEQUATE STABILIZATION, THE TEMPORARY EROSION AND SEDIMENT aU a°COMPRISED COMMUNITY PANEL NUMBER 200, MAP NO. 51003CO200D DATED FEBRUARY 4, 2005. CONTROLS WILL BE CLEANED AND REMOVED. THE SEDIMENT BASIN WILL BE CONVERTED TO SURFACE ROUGHENING - 3.29 A STORMWATER FACILITY. SURFACE ROUGHENING SHALL BE APPLIED TO ALL TRAVERSABLE FILL SLOPES WITH TRACKED Revisions MACHINERY. SURFACE ROUGHENING SHALL FOLLOW THE GUIDELINES SET IN VESCH 3.29. Typical Drawing Library Location Cell Nome IB/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stand Foundation Cells (Spread) Foundation Cells for Other Typical Structures Steel Detail & Assembly I I I I I (Pier) I (Spread) •USERNAMEs lnf ormation TOPSOIL - 3.30 AREAS OF THE SITE MAY REQUIRE TOPSOILING TO PROVIDE A SUITABLE GROWTH MEDIUM FOR VEGETATION STABILIZATION. A TEMPORARY TOPSOIL STOCKPILE SHALL BE INSTALLED AS SHOWN IN ON SHEET 5. TOPSOILING PLACEMENT AND INSTALLATION SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.30. TEMPORARY SEEDING - 3.31 CERTAIN AREAS OF THE SITE WILL BE ROUGH GRADED AS A FIRST STAGE OF CONSTRUCTION. FINISH GRADING WILL OCCUR NEAR PROJECT COMPLETION. THESE AREAS SHALL BE SEEDED TEMPORARILY WITH FAST GERMINATING GRASSES TO REDUCE EROSION POTENTIAL. DIVERSIONS, FILL DIVERSIONS, DIVERSION DIKES AND THE SEDIMENT BASIN EMBANKMENT SHALL ALSO RECEIVE TEMPORARY SEEDING. TEMPORARY SEEDING APPLICATIONS SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.31. PERMANENT SEEDING - 3.32 IMMEDIATELY FOLLOWING FINISH GRADING, PERMANENT VEGETATION SHALL BE APPLIED IN ACCORDANCE TO THE GUIDELINES IN THE VESCH STANDARD 3.32 (PIEDMONT AREA) AND PER THE E&SC DETAILS IN THIS PLAN. PERMANENT SEEDING APPLICATIONS SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.32. MULCHING - 3.35 IN AREAS THAT REQUIRE SUPPLEMENTAL EROSION CONTROL TO PROMOTE GROWTH OF VEGETATION OR TO REDUCE VELOCITIES FROM OVERLAND FLOW, MULCH MAY BE USED AS AN ALTERNATIVE. ANY MULCH APPLICATIONS SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.35. SOIL STABILIZATION BLANKETS AND MATTING - 3.36 SOIL STABILIZATION BLANKETS AND MATTING MAY BE USED ON THE SEDIMENT BASIN EMBANKMENT AS AN ALTERNATIVE TO TEMPORARY AND PERMANENT SEEDING OR IN CRITICAL AREAS WITH STEEP CUT OR FILL SLOPES. BLANKET AND MATTING STABILIZATION MAY BE USED PER THE DIRECTION OF THE E&SC INSPECTOR. ANY BLANKET AND MATTING APPLICATION SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.36. TREE PRESERVATION & PROTECTION - 3.38 TREE PROTECTION SHALL BE INSTALLED ADJACENT TO PRESERVED AND EXISTING TREE LINES SHOWN IN THE PLANS. ALL MAINTENANCE PRACTICES SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARDS 3.38. DUST CONTROL - 3.39 DUST CONTROL APPLICATIONS MAY BE EMPLOYED WHEN SURFACE AND AIR MOVEMENT OF DUST RESULTING FROM CONSTRUCTION BECOMES AN ISSUE. DUST CONTROL APPLICATIONS SHALL FOLLOW THE GUIDELINES SET IN VESCH STANDARD 3.39. CONSTRUCTION SEQUENCE PHASE I: 1. FLAG THE LIMITS OF DISTURBANCE SHOWN ON THE PHASE I EROSION AND SEDIMENT CONTROL PLAN PRIOR TO A PRE -CONSTRUCTION MEETING WITH CERTIFIED PERSONNEL AS IT PERTAINS TO THE VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) REGULATIONS AND IN ACCORDANCE WITH THE ANNUAL STANDARDS AND SPECIFICATIONS FOR EROSION AND SEDIMENT CONTROL AND STORMWATER MANAGEMENT (TE VEP 8000). CONTACT DOMINION PERMITTING AT 804-775-5279 TO SET UP A PRE -CONSTRUCTION MEETING WITH THE CERTIFIED EROSION AND SEDIMENT CONTROL INSPECTOR DESIGNATED FOR THIS PROJECT. 2. DURING THE PRE -CONSTRUCTION MEETING, THE CERTIFIED EROSION AND SEDIMENT CONTROL INSPECTOR SHALL CHECK THE FLAGGING DESIGNATING THE LIMITS OF DISTURBANCE. 3. INSTALL THE CONSTRUCTION ENTRANCE, SILT FENCE IMMEDIATELY DOWN GRADIENT OF SEDIMENT BASIN, SEDIMENT BASIN AND OUTLET CONTROL AT THE BASIN OUTLET PIPE INCLUDING ENERGY DISSIPATOR. 4. INSTALL ALL ASSOCIATED DIVERSION DEVICES (DIKES, STORM CONVEYANCE CHANNELS, TEMPORARY CULVERT AND CULVERT INLET PROTECTION) ASSOCIATED WITH THE SEDIMENT BASIN. 5. INSTALL ALL OTHER PERIMETER DEVICES SUCH AS REMAINING SILT FENCE AND SUPER SILT FENCE, 6. INSTALL TIMBER MATS AS INDICATED ON PHASE I EROSION & SEDIMENT CONTROL PLAN. 7. CLEAR, GRUB AND REMOVE TREES AS INDICATED IN THE PHASE I PLAN ONCE ALL EROSION CONTROL DEVICES ARE FUNCTIONING AND IN PLACE. 8. INSTALL TEMPORARY TOPSOIL STOCKPILE AND PROTECT WITH SILT FENCE AND TEMPORARY SEEDING. 9. THE EXISTING SUBSTATION FENCE SHALL REMAIN INTACT DURING THIS PHASE UNLESS OTHERWISE DIRECTED BY AUTHORIZED DOMINION PERSONNEL. 10. DEMOLISH ANY ITEMS INDICATED ON SHEET 5. 11. PERFORM ANY MINOR GRADING NECESSARY DURING THIS PHASE. ENSURE SURFACE ROUGHENING IS APPLIED TO 3:1 FILL SLOPES. 12. APPLY TEMPORARY SEEDING TO ANY DISTURBED AREAS THAT REMAIN DORMANT FOR MORE THAN SEVEN (7) DAYS. PHASE 11: 1. MAINTAIN EROSION AND SEDIMENT CONTROL MEASURES FROM THE PHASE I PLAN AS PRACTICAL. 2. INSTALL FILL DIVERSIONS AND ENSURE THEY ARE PROPERLY DIRECTED TO THE SEDIMENT BASIN. 3. CONSTRUCT PROPOSED TOE CHANNEL AS SHOWN ON PLAN. TIMBER MATS MAY BE REMOVED AS PRACTICAL TO CONSTRUCT TOE -CHANNEL. STABILIZED TOE -CHANNEL WITH SOIL STABILIZATION BLANKET AND MATTING. 4. MAINTAIN SEDIMENT BASIN, ROUTINELY CHECKING SEDIMENT ACCUMULATION LEVELS, RISER, OUTLET PIPE AND EMBANKMENT STABILIZATION. 5. FILL THE SITE PER THE GRADING SHOWN IN THE PHASE II PLAN. 6. INSTALL RIP RAP SLOPE PROTECTION ON STEEP SLOPES AS SHOWN IN THE PHASE II PLAN. 7. PERFORM FINAL SITE GRADING AND STABILIZE DITCHES AS SHOWN ON PLANS. 8. INSTALL A FOUR (4) INCH THICK LAYER OF VOOT ,57 STONE COURSE AGGREGATE SITE STONE, TWELVE (12) INCH THICK VOOT No. 21A COMPACTED BASE COURSE ACCESS ROADS AND SUBSTATION SECURITY FENCE PER SHEET 7 AND THE DETAILS SHOWN ON SHEET 13. APPLY PERMANENT SEEDING TO REMAINING GRADED AREAS NOT STABILIZED BY STONE COVER. 9. CONVERT SEDIMENT BASIN TO A STORMWATER MANAGEMENT FACILITY PER THE DETAILS SHOWN ON SHEETS 9 AND 10. REMOVE DEWATERING DEVICE AND CONVERT RISER TO THE FINAL SWM FACILITY CONFIGURATION SHOWN ON THE DETAILS ON SHEET 10 UPON THE APPROVAL OF THE CERTIFIED EROSION AND SEDIMENT CONTROL INSPECTOR DESIGNATED FOR THIS PROJECT. 10. NO EROSION AND SEDIMENT CONTROL DEVICES SHALL BE REMOVED UNTIL THE SITE IS DEEMED STABILIZED AND PER THE APPROVAL OF THE CERTIFIED EROSION AND SEDIMENT CONTROL INSPECTOR._ TOTAL DISTURBED AREA: 2.74 ACRES GeOSyT1t2C Dominion `CbA? 10(A 114 aoirsultants wndoEnergya Professional Enginaer Approval EROSION & SEDIMENT CONTROL GENERAL ,j.;rxowN' NOTES & NARRATIVE f GORDONSVILLE SUBSTATION EXPANSION ,_ ALBEMARLE COUNTY, VIRGINIA LaC:LAIR Nome Date Project No. Sheet No. j,jC.,j�, 039�0 Designed by: GEO 06/20/18 99-2523 M .A j �, ( Approvals TER 06/20/18 Scale 2 OF 2 M �Q, (f7 Approvals N.T.S M 831 8/M No. Revisions M w °, o j 'oWZ (D Cod File Nome $$$$$$$$$$$SYTIME Drowing No. - w PLOTTED: tss:ss:s:::SYTIME 0 0 0 0- 0 Q 0 .a a t4 0 1 2 3 II I I I I I I I 1 I I I 1 I I I I I I I I I I I I I 1 1 4 5 t 7 8 9 10 11 12 L Q tl Z CO � � L m �� 0 .Die to a a zo U Revisions sUSERNAMES VIRGINIA EROSION AND SEDIMENT CONTROL MINIMUM STANDARDS MINIMUM STANDARDS MINIMUM STANDARD 10. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE THIS SECTION IDENTIFIES THE MINIMUM EROSION AND SEDIMENT STANDARDS DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER THAT THE PROJECT NEEDS TO MEET ACCORDING TO VIRGINIA'S EROSION AND CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR SEDIMENT CONTROL LAW AND REGULATIONS (4VAC50-30-40). OTHERWISE TREATED TO REMOVE SEDIMENT, ❑ APPLICABLE ® NOT APPLICABLE MINIMUM STANDARD 1. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS PROJECT COMPLIANCE: N/A, NO INLET PROTECTION REQUIRED ON THIS PLAN. 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 MINIMUM STANDARD 11. BEFORE NEWLY CONSTRUCTED STORMWATER GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS. PERMANENT CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT [DORMANT FOR PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING MORE THAN ONE YEAR AND PROVIDED AS THE SITE IS BROUGHT TO GRADE. SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING 0 APPLICABLE ❑ NOT APPLICABLE CHANNEL. ® APPLICABLE ❑ NOT APPLICABLE PROJECT COMPLIANCE: TEMPORARY AND PERMANENT SEEDING SPECIFICATIONS HAVE BEEN INCLUDED AS A VEGETATIVE MEASURE. REFER TO E&SC FLANS AND PROJECT COMPLIANCE: OUTLET PROTECTION AND DITCH LININGS SHALL BE INST PROJECT COMPLIANCE: NO CONCENTRATED RUNOFF WILL FLOW DOWN ANY CUT OR FILL SLOPE WITHOUT A FILL DIVERSION THAT IS DIRECTED TO A SEDIIMENT BASIN. SEE SITE PLANS. MINIMUM STANDARD 9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. ® APPLICABLE ❑ NOT APPLICABLE PROJECT COMPLIANCE: INADEQUATE DRAINAGE SHALL BE CORRECTED PRIORI TO STABILIZATION. Typical Drawing I Library Location I Cell Name I IB/M Assembly I Pipe Stand Foundation Cells (Pier) (Pipe Stand Foundation Cells (Spree Information 1 T AL S MINIMUM STANDARD 19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASE IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE FOLLOWING STANDARDS AND CRITERIA: A. CONCENTRATED STORMWATER RUNOFF LEAVING A DEVELOPMENT SITE SHALL BE DISCHARGED DIRECTLY INTO AN ADEQUATE NATURAL OR MAN-MADE RECEIVING CHANNEL, PIPE OR STORM SEWER SYSTEM. FOR THOSE SITES WHERE RUNOFF IS DISCHARGED INTO A PIPE OR PIPE SYSTEM, DOWNSTREAM STABILITY ANALYSES AT THE OUTFALL FOR THE PIPE OR PIPE SYSTEM SHALL BE PERFORMED. B. ADEQUACY OF ALL CHANNELS AND PIPES SHALL BE VERIFIED IN THE FOLLOWING MANNER: (1) THE APPLICANT SHALL DEMONSTRATE THAT THE TOTAL DRAINAGE AREA TO THE POINT OF ANALYSIS WITHIN THE CHANNEL IS ONE HUNDRED TIMES GREATER THAN THE CONTRIBUTING DRAINAGE AREA OF THE PROJECT IN QUESTION; OR LED (2)(A) NATURAL CHANNELS SHALL BE ANALYZED BY THE USE OF A TWO-YEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP CHANNEL BANKS NOR CAUSE EROSION OF CHANNEL BED OR BANK; AND (B)ALL PREVIOUSLY CONSTRUCTED MAN MADE CHANNELS SHALL BE ANALYZED BY NT THE USE OF A TEN-YEAR STORM TO VERIFY THAT STORMWATER WILL NOT OVERTOP ITS BANKS AND BY THE USE OF A TWO-YEAR STORM TO DEMONSTRATE THAT STORMWATER WILL NOT CAUSE EROSION OF CHANNEL BED OR BANKS AND (C) PIPES AND STORM SEWER SYSTEMS SHALL BE ANALYZED BY THE USE OF A TEN-YEAR STORM TO VERIFY THAT STORMWATER WILL BE CONTAINED WITHIN THE PIPE OR SYSTEM. C.IIF EXISTING NATURAL RECEIVING CHANNELS OR PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS OR PIPES ARE NOT ADEQUATE THE APPLICANT SHALL: (1) IMPROVE THE CHANNEL TO A CONDITION WHERE A TEN-YEAR STORM WILL NOT OVERTOP THE BANKS AND A TWO YEAR STORM WILL NOT CAUSE EROSION TO THE CHANNEL BED OR BANKS; OR (2) IMPROVE THE PIPE SYSTEM TO A CONDITION WHERE THE TEN YEAR STORM IS CONTAINED WITHIN THE APPURTENANCES; OR (3) DEVELOP A SITE DESIGN THAT WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A TWO YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A NATURAL CHANNEL OR WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A TEN YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A MAN MADE CHANNEL; OR (4) PROVIDE A COMBINATION OF CHANNEL IMPROVEMENT, STORMWATER DETENTION OR OTHER MEASURES WHICH IS SATISFACTORY TO THE PLAN APPROVING AUTHORITY TO PREVENT DOWNSTREAM EROSION. D. THE APPLICANT SHALL PROVIDE EVIDENCE OF PERMISSION TO MAKE THE IMPROVEMENT. E. ALL HYDROLOGIC ANALYSES SHALL BE BASED ON EXISTING WATERSHED CHARACTERISTICS AND THE ULTIMATE DEVELOPMENT OF THE SUBJECT PROJECT. ME, S• F.IF' THE APPLICANT CHOOSES AN OPTION THAT INCLUDES STORMWATER DETENTION HE SHALL OBTAIN APPROVAL FROM THE LOCALITY OF A PLAN FOR MAINTENANCE OF THE DETENTION FACILITIES. THE PLAN SHALL SET FORTH THE MAINTENANCE REQUIREMENTS OF THE FACILITY AND THE PERSON RESPONSIBLE FOR' PERFORMING THE MAINTENANCE. ED G. ODUTFALL FROM A DETENTION FACILITY SHALL BE DISCHARGED TO A RECEIVING CHANNEL, AND ENERGY DISSIPATERS SHALL BE PLACED AT THE OUTFALL OF ALL DETENTION FACILITY AS NECESSARY TO PROVIDE A STABILIZED TRANSITION FROM THE FACILITY TO THE RECEIVING CHANNEL. H. ALL ONSITE CHANNELS MUST BE VERIFIED TO BE ADEQUATE. 1. INCREASED VOLUMES OF SHEET FLOWS THAT MAY CAUSE EROSION OR SEDIMENTATION ON ADJACENT PROPERTY SHALL BE DIVERTED TO A STABLE OUTLLET, ADEQUATE CHANNEL, PIPE OR PIPE SYSTEM, OR TO A DETENTION FACILITY. J. IN APPLYING THESE STORMWATER RUNOFF CRITERIA, INDIVIDUAL LOTS OR PARCELS IN A RESIDENTIAL, COMMERCIAL OR INDUSTRIAL DEVELOPMENT SHALL F NOT BE CONSIDERED TO BE SEPARATE DEVELOPMENT PROJECTS. INSTEAD, THE DEVELOPMENT, AS A WHOLE, SHALL BE CONSIDERED TO BE A SINGLE T DEVELOPMENT PROJECT. HYDROLOGIC PARAMETERS THAT REFLECT THE ULTIMATE DEVELOPMENT CONDITION SHALL BE USED IN ALL ENGINEERING CALCULATIONS. K. ALL MEASURES USED TO PROTECT PROPERTIES AND WATERWAYS SHALL BE EMPLOYED IN A MANNER WHICH MINIMIZES IMPACTS ON THE PHYSICAL, CHEMICAL AND BIOLOGICAL INTEGRITY OF RIVERS, STREAMS, AND OTHER WATERS S OF T'HE STATE. ® APPLICABLE ❑ NOT APPLICABLE L. AN1Y PLAN APPROVED PRIOR TO JULY 1, 2014, THAT PROVIDES FOR STORMWATER MANAGEMENT THAT ADDRESSES ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR ]NATURAL OR MAN-MADE CHANNELS SHALL SATISFY THE FLOW RATE CAPACITY AND N VELOCITY REQUIREMENTS FOR NATURAL OR MAN-MADE CHANNELS IF THE PRACTICES ARE DESIGNED TO (1) DETAIN THE WATER QUALITY VOLUME AND TO RELEASE IT OVER 48 HOUR'S; (II) DETAIN AND RELEASE OVER A 24-HOUR PERIOD THE EXPECTED RAINFALL RESULTING FROM THE ONE YEAR, 24-HOUR STORM; AND (III) REDUCE THE ALLOWABLE PEAK FLOW RATE RESULTING FROM THE 1.5, 2, AND 10-YEAR, 24-HOUR STORMS TO A LEVEL THAT IS LESS THAN OR EQUAL TO THE PEAK FLOW RATE FROM THE SITE ASSUMING IT WAS IN A GOOD FORESTED CONDITION, ACHIEVED THROUGH MULTIPLICATION OF THE FORESTED PEAK FLOW RATE BY A REDUCTION FACTOR THAT IS EQUAL TO THE RUNOFF VOLUME FROM THE SITE WHEN IT WAS IN A GOOD FORESTED CONDITION DIVIDED BY THE RUNOFF VOLUME FROM THE SITE IN ITS PROPOSED CONDITION, AND SHALL BE EXEMPT FROM ANY FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS FOR AFTER NATURAL OR MAN-MADE CHANNELS AS DEFINED IN ANY REGULATIONS PROMULGATED PURSUANT TO § 62.1-44.15,54 OR 62.1-44.15,65 OF THE ACT. ❑ APPLICABLE ® NOT APPLICABLE M. FOR PLANS APPROVED ON AND AFTER JULY 1, 2014, THE FLOW RATE CAPACITY AND VELOCITY REQUIREMENTS OF § 62.1-44.15:52 A OF THE ACT AND THIS SUBSECTION SHALL BE SATISFIED BY COMPLIANCE WITH WATER QUANTITY REQUIREMENTS IN THE STORMWATER MANAGEMENT ACT (§ 62.1-44.15:24 ET SEQ. OF THE CODE OF VIRGINIA) AND ATTENDANT REGULATIONS, UNLESS SUCH LAND -DISTURBING ACTIVITIES ARE IN ACCORDANCE WITH 9VAC25-870-48 OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) REGULATIONS. ® APPLICABLE ❑ NOT APPLICABLE N. COMPLIANCE WITH THE WATER QUANTITY MINIMUM STANDARDS SET OUT IN 9VAC25-870-66 OF THE VIRGINIA STORMWATER MANAGEMENT PROGRAM (VSMP) REGULATIONS SHALL BE DEEMED TO SATISFY THE REQUIREMENTS OF SUBDIVISION 19 OF THIS SUBSECTION. 0 APPLICABLE ❑ NOT APPLICABLE PROJECT COMPLIANCE: SEE SWM NARRATIVE ON SHEET 14 FOR SWM CALCULATIONS. Foundation Cells for Other Typical Structures Steel Detail & Assembly (Pier) (Spread) MS 'I'1tNtI3I';k tNlA'1' (I of S) ATTACHMENT, 11 MAT Speclftcatlons & Dimensions 3 fri't t amktu ,xt tR7t�}t' x tAM • 2' X 3" Oak trial -is: (04l, a: tOD - t'J) 1,I' ttomfs t'jurlly npacari hl4dk) - t 15) 0' boirc s cgt<51ty spacxxo 8010110 - (9) 14' blzartls utp,: / spizw • {9✓} 3711' ure'..s WGJr '0 10, VA15 014M ^&,f.h I Ul C, ram,, Lo L+,urdui>Su 1a • tzyus'I,.clatctc,:s • '`tne Curlht 'Iirzinmm� 3 Y1y Sls,7,:11tc,q N.xt!+,w,' �,YI t t, i�+liiitidJvtl tAa{ U' .t ,t' + f � rs' calk hearC.; rra0h r.4r 110 - (9) 14' trail. ugwlty 5ptr_ud a Bullum (9) X 4aard3 rrlucuty apex ud + t 7 r) 7d8' +s'Li4g to<?4iYdrr IIJ. W13 Uu.h w-h 1wl ce can bo (f)untor5unk • )IO-A chain, rrA Lqurnd • 'See l:sriibt '000!l nan 2 Pt/ SpaO10011 Ndtlnhi c�„�,�rarry.s�'i"t' x tj• trio 12" d'x5' tA+arr1 tttr}IIa_lr±,11;I(�.elC<Itiul! 14) IT121' .z:O W Ouk atock 20 tCdrO r Ccad ojwhar mtt, I' SWO1 itu.3d6d r0d:w.ijawd n.11, nut :rnd wiv,er, crd tuck to !10 12 1f Irlizz Mart urd w0l rwnainrrrd r06 or,:Ial wlrll • 30 EAN1.14 'OcvranKxI Cr::rir, MA.Sy®c nrrJ f}alfoer• $l. Q( fo(N 13i113Lu,rira_;d4of • (4) a'x $' &:v410 Calk Motk 20' la40 11+iiirad WM i' tLWI Ififil Old fod. IucusS,Ef m,111 ",A uno sCrd.; to txo 12 14 Ir)-116I f(CIT! drO Al , rorasnirrd r0dS Vfthll dIS011 • '�eu f:ahtra 'tlwr<1(nnns t:rsr,I f.Gsi SFx^c:lrti Puttcrn' "• hats to be dusigisu,l urllry OsxnN,lon'3 cGrtJard Upcc7Fsca4on, SRu Atat,;rt,xl Br7oa:a And Requirurrl0rlts yUr,Utaelunuut N . ALL buatds «hall bo sand OAI( and n0 in;Xad hard,roc.d W1tt bd uer,;,tyfstd for Alit Millorials re+,fdr(rnt) thin bid. TF V1i11 3000.17-00 21 1992 3.0_> STONE CONS'7TRUC1701V .UNTRANCJ, C� I 1p' Rltt £XlSTirJ, A PAVENEUt r3 w 5:i 1 [j� l i' _ ilu7i FILTER CLOTH li�tl A 10PITABLE BERH (EW TIONAL) SIDE ELEVATION EXISTING GROUND 79 Hirt 71 B WASHRACM (UP1100ALI H5,MEM fj I lu• Hw �: ✓A iEnEt+i - t V/➢OT fl I �� PDTIIIVE DRM.Gr. 10' NIn CCURSE AGGREGATE 9 + to SC9Ir,CNr TRAPPING DEVICE IIUST EXIVID FtULL WEIR, oT wGRiSS mo) EGREss PLAN VIEW oP£aAnoll 1tF 1i1-1 Y ,xln. FILTER CLOTH SECTION A -A r t REINFORCED COticRiCIC .• BRAIN SPACE SECTION B-8 Source: Adapted fromi 1983 Maryland Standards for Soil Plate 3.(P--1 Erosion and Sediment Control, and Va. DSWC -I-INI13EA 24LVI' j2jof 3) "TL VEY 3000-17-00 22 1992 3.05 C'01VS7'RUC7'I01V OF A SILT' FENC'L' - ---------- SF (PrIMOUT WIRE' SUPPORT) ! 1. SET THE STAKES. 2. EXCAV02 A 4"X 4" 7RENCH 1_1113LOPE ALONG 'tlz LJNE OF STAKES. i 6'UA:t. Ii� e FLOW a' 3. STAPLE FILTER MATERIAL To STAKES AND EXTEND IT INTO THE TRENCH. i FLOW 4 BACKFILL AND COMPACT THY. EXCAVATED SOI1, SHEET FLOW INSTALi._r TION (PERSPECTIVE; VIEW) o fi 'a y POINTS A SHOULD BE HIGHER THAN POINT B. DRAIVAGEWAY INSTALLATION (FRONT ELEVATION) Source: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control, Sherwood and Wyant Plate 3.05-2 CRS TEMPORARY CONSTRUCTION ROAD STABILIZATION VESCH 3.03 -- 20 FT MIN. NOTE: REFER TO \- 6" VOOT -1COARSE AGGREGATE SPEC. 3.03 FOR 8 OZ. WOVEN ADDITIONAL DETAILS GEOTEXTILE FABRIC VIRGINIA EROSION AND SEDIMENT CONTROL STANDARD 3.03 1 i Geosyntec Dominion --�M� cc)nstlltrlltts >� Ener�gya Professional Engineer Approval EROSION & SEDIMENT CONTROL �;�x°w� MINIMUM STANDARDS AND DETAILS ®Q� GORDONSVILLE SUBSTATION EXPANSION ALBEMARLE COUNTY, VIRGINIA KY1j", E LaCL,AIR Nome Dote Project No. Sheet No. itl�• 1\j�, p39 4 Designed by: GEO 06/20/18 99-2523 Q t} • f Approvals TER 06/20/18 Scale 3 OF 20 Approvals N.T.S. B/M No. Revisions Cod File Nome PLOTTED: assss:$**$sSYTIME Drawing No. 4,150400% njr W i- r N N N N IA N N N cww o' o jd Uj h- Z y tY W .00 0. w m i C 0 CL a 44 a � L Q 0 U Tn U m 0 Z V Revisions SUSERNAMES E C ' m z 44 SSF SUPER SILT FENCE SUPPORrPosr:3' FA3TEP.ER$„ hiq /GA T@raSICt1'9JiRE -- FABRIC FENCE 33, MIN - - CHART LINK FENCE 0, (2"NOVEtl MESH FABRIC) CCMPACTED BACKFILL F-�--r ..9nri+or�ouyn X MIN 36, MIN. POS r-- (YP rFERS ELEVATION FABRIC FLo't! t FENCE JOINING FENCE SEC UONS POSTSSPACED 10'?AAX USE 2Irl'DI1 GALVVIILEOORALUMINUAPOSTS CHAIrN LINK TO POST FASINER'S SPACED�14' f."K USE rk) 6Oa ALUMINUM `HIRE Oft NO 3 GAL`JANILED 3f EEL PRE-F tc0 CLIPS CFWN LINK TO TEN SIGN WIRE FASTNERS SPACED u0' I&V USE P.0 10 Ga G ELYivuxEO STEEL WIRE FABRIC TO Ct41iN FA3 ENERS SPACED a 2.1E t,Lq t C TOG NOTES I NO l oa rEt4sioti VrtnE INS rALLED )iORILCN rALLY A r rOP AND Bo rToart of CI(AIN LINK FENCE 2 FIL TER FABRIC FENCE MUST BE PLACED A r ExISWIG LEVEL GRADE BOTH ENDS OF THE BARrt1ER MUST BE EAT ENOEO AT LEAS T $ FEE r UPSLOPE AT .15 DEGREES to lAtlN BARRIER ALIGNMENT 3 SEDINteur GtuBr BE REMOVECI TA EN ACCUMULATIONS REACH tr2 THE ABOVE GROUND HEIGHT OF THE FENCE S'rD DWG 02-t57 SUPER FIL TER FABRIC FENCE 1992 f!' YF'I C'A L WA '1'F;1T! CO UFACTED 3a1L 11 ', ' t,: PR I >_., I_I<fif IV;#50-1-4 TOPICAL CONCUPrTL UNIT) DITCH -411 M, :IA.?r, ullvil) CtTCN fj r jI l pARF,l+t�ar, eATE+s✓<AY eaa:,.;�-�1�tY,+Tt ^SJ� "'" �F'_._�. _"....._•___T-��.p� '•�� Y f }�•f " � fi �i�� elfr W ELLf1G i IIIIF, fret' ill = s=; = li E= tS1 =ti is:, # .v_ fi' fi - Ii F1LtER Ciri,Tlt •--• NOTE ALTHCUGH FILTER Ct(AH L3 Pa?FEKED. n GiU.vt;taK FigTzR V-W RE Rift$1411PED FOP FILTrx (LOTIt ( Foil Plri3r.it, 3E+,5'IREQAT! 3EE :TAD & �FEC 3 i% RFP1LtPl f iYPlt•JL cssncnt?rr c11.LN+s`s E.t:?.tN3l0N PAST- • a r � r i i 1 T i 't 1-1,t si ( tg'1'i'.l.i»3��r•t'si'a:�,?��d `j{'Lai, �"r�)l�9%"�ia r� I i I Nor T), 3ek1.E , . 1;-lu, C"Et __• `1 ._r. InCATKI At "Virl 60 $E11:411 w.Al PACs;:K' •..J;pp,'y�}:i•..i __� .fY� ''ems L .tl::s t,.`�h%t�•M11 i�1�`�l y��yr`"P9.ftrl. sr .t�,,,. �- r#4.dL L•va � 3Lt1111JN A A I( rX.01IMICkIl /AIKXAAY ct:tian EI;T:Oda3 t Mltec ti:l. DSWC 1992 1992 0 S'IL7' FENCE CULVERT INLET PR 07'EC'77ON CI � EFE)W�Lt, ----------- tot Of FILL -- -�---------------- --- t----------- -- i 1 , ti l ' , I 1 I I I ME Or FL SIT FENCE --•-- 'CHSTAME IS $' MrtrNUM 7F fLOW 6 104MO DRI"MEW L FLO'N OP77ONAL S701VE COMBIIVA 77ON 1.O I 1.5E FLOP ti - *----•CLASS I R61W " `.00y I3, ,i351 CR ,15 COARSE ACCdi€+i M 10 RT Xr. SILT FEIICE IN ' IIORS65HOE ' t0iEJt HIGH VELOCt1Y OF FLOd IS UPECTEA Source: Adapted from VDO'r Stanti w Sheets and Va. DSWC 1992 PIPE OUTLET C'01VDITIONIS' 00p) t r` t 1 2 3 4 3.03 TEMPORARY DI VERSI M DIKE @)D Cottloacted Soil Source: Va. DSWC TEWPOR.AR Y FILL F D ICI VERSION WTI T QT nDfi' II I I I 1 17 5 7 -1 199E Plate 3.09-1 8 9 10 11 3.14 1992 SEDIAMN7T BASIN SC'FIEIIIA 7'I C S B ELE VA 7YONS CnST OF EMERGENCY DE51Gt4 HIGH WATER SPILL'HA( (25-YFt. STORld ELEY.) p MIla. 1.0E bf1Pi. LO` j - - RISER CREST f .{ Ac. DEfiarErlFNG ' pit'r "Y•STORAGE .._ _-�'-r DEYtC% T37 C.Y./ AC. WET STORAGE >T,r �>zo-1r iilir : SEOIVAEITT CLEANOUT POINT C WET ' STORAGE REDUCED to 34 C.Y./ ACRE) DESIGN ELEVATIONS WITH EMERGENCY SPILLWAY DESIGN HIGH WATER (25-YR. STORM ELEV.) Mitt. 2.0 MIN. 3.01 0.5E-1 Mita. 1.0` 67 C.Y./ AC. - DRY ' STORAGE - RISER CREST 67 C.Y./ Ac. r.< . . "YET' STORAGE DVAC ERIPM P�k tatx SEGIMErIr CLEANOur POINT DESIGN ELEVATIONS WITHOUT EMERGENCY SPILLWAY (RISER PASSES 25-YR. EVENT) Plate 3.08 1 Source: Va, DSWC Plate 3.10-1 REFER TO SHEET 9 FOR SEDIMENT BASIN TABULATION Source: Va. DSWC Plate 3.14-2 3.18 1992 3..19 t992 3,20 ""- " PIPE OUTLET TO FLAT AREA WITH NO DEFINED CHANNEL PLAN VIE1Y _ � I ^�l _d SECTION A -A FILTER CLOTH KEY IN 0"-B' RECOMMENDED FOR ENTIRE PERIMETER A A3ldo (MIN.) _ - - -�------------- I PIPE OUTLET TO WELL t DEFINED CHANNEL PLAN VIEW I r------ L a 0 9 -> iI d sEcrloN a -A FILTER CLOTH KEY IN O"-T. RECOMMENDED FOR ENTIRE PER131ETER NOTES 1 APRON I1NiNG MAY BE RIPRAP, GROUTED RIPN SP, GADION HASKL"r. OR CONCRETE- ? La Is THE LENGTH OF THE RIPRAP APRON AS CIWULA7ED USING PLATES 3.18-3 AND 3.16-4 3 d = 1.5 'TIMES THE %WMUM STONE D1ANVIER, BUT NOT LESS THAN 6 INCHES riate -T.1 i-t Source: Van. DSWC 3.32 1992 P S TABLE 3.32•D SITE SPECIFIC SEEDING 14IIX'TURES FOR PIEDNION'T AREA 'Total Lbs. rAr Mittititunl 'Care I.,awn - Commercial or Residential 175.200 lbs. Kentucky 31 or Turf -Type 'tall Fescue 95 100% Improved Perennial Ryegrass 0.5% Kentucky Bluegrass 0.5% I�tigh-Maintenance Lawn 200 250 lbs. Kentucky 31 or Turf -Type Tall Fescue 100% C- elil�I)e f;,;:l er less) Kentucky 31 Fescue 128 lbs. Red'I'op brass 2 lbs. Seasonal Nurse Crop ' 20 lbs. 150 tbs. Luw-MainteglLnse SDI (4�e_[,ter Ih,tn 3:il Kentucky 31 Fescue 108 tbs. Red Top Grass 2 lbs. Seasonal Nurse Crop ' 20 Ibs. Crownvetch ' ` 20 lbs. 150 Ibs. ' Use seasonal nurse crop in accordance with seeding dates as stated below: February 16th through April ...................... Annual Rye May Ist through August 15th ..................... Foxtail Millet August 16th through October ...................... Annual Rye November through February 15th ................... Winter Rye " 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 Crownvetch, increase rate to 30 lbs./acre. All legurne seed must be properly inoculated. Weeping Lovegiass may be added to any slope or low -maintenance mix during warmer seeding periods-, add 10-20 lbs./acre in rtlixes. Typical Drawing Library Location Cell Name Information FORCD ROCK C'�IAC'�� DAM DA VK .5'TAB11,17,,4 'I0A' i 2 ACRES OR LESS OF DRAINAGE; AREA: i C9'll;l'1IR cl_,O'1'1.1 UNDERI.,IIwEP (I)Itl l'C;ItRI 6•• Ij FILTER CLOTH (OPTIONAL)- AE r �r, T ruTE€t C:1If x -- (DOWNSTREAM VIEW) I VDoT #I j 1 COARSE ACGR1,GATE f� FLO -7- i i a Source: Adapted from VDO'T 1.)rainate mans t Plate 3.18-1 3.35 i 2-10 ACRES OE' DRAINAGE AREA: I c- FILTER CLOTH t 3 (OPTIONAL) (DOS'TNSTI2E_4,11 VIEW) VDOT I COARSE AGGREGATE: --`-------- - FLOW CLLSS I RIPRAP Plate 3. i9- I Source: Va. DSWC 3.36 j� TYPICAL TREy17"A1-EJV 1' - 1 (SOIL S'f'ABILILA 7'10N B'LA NKE 7) IjVrSM1LLA7'101V C'R11'L;'RIA NGCtiOR SLAT APPPER 10UtAf.0. 1. STAPLES rcaOfLL t PER 1fi f.�O. .j CI VII 5LOTt RCLI. I A)1"IEUR 5!t0T5. SUT.CftOR TtOTS da f Ci•ECA SLO )iS TO iO DijR:ED e To 1 r. 12• !.4AJ(. i:, GN FLARtifa 6' MAR, Tf EEPEH t1{/f! G;kl I� .JUILUTGfa %Lot - - - "OGEE flto END t�7Rlr5 I I I 1 11 I I t l CSECrt SLOTTU DE SrtIJCLY aiiOttED' (JUTE It93a WILL HAVE , 1 I I +� TErtWAk FOtD 31101.10 1.,$? Jam GI LEI/ CF EXE SCCtr) � ,,1 LAI, SC!!ir 'r "m TAMP FIRt1LY ("vlc NEW ONLY) j I I w1 -A�fiCNC SiO 5' VS:i. 4:1 OR n. M-R ' 3' km "EFPFR TWA 4A •r ' 6 TO t7 T I! 1 ff f--T-F ; I '{HtOiS :LOT _-�_.....___-__ J 1 TAktP t'- I l t - 1' r+3 Y - I .` ' CHECA SLUT I I I I I I I I I I FIRMLY,4kf��.1 +1 � I�. o;I K! � YOia 1 •JAR a PLAN VIEW STAPLING DIAGRAM STAPLE FUROJEO MOLT 140.11 STEEL AlUt. 'CHECK C IN ER Mlle 8' SAPLE 1/Ito. LENCT)i FOR S OY =11- 3O' C--C INTERVALS; ALL Ir STAPLE l+nt. LEtFCTH FCR OTH„R SOT, t1Oi ai~Q.'o WITH AEI. Y:ONrltIAilCfl'OLAf I:CET ,:UNCT.CN $LOT TAMP TERu#iA! FCI.D FIRMLV _ 17, "°11-*A'.IY FIRMLY F-" r _r 1992 Plate 3 20-1 12 I?I COMAIEN.DED .DE 6VA TEI?.I1V C S'Y,,37'EM FOR SEDIMENT S B E3A S'IAI S' '-taJ>:vo:u PAGV,cTN'YLENE CAP ---1 Y f-! 3.14 DEPT)t _ VAR;:S AS TACK 'HELD �- ------ PERTFOPATEO PC+Y€1H*J`L PIE' FOR * Er) FOR*Car ' OR,AJIME TU13,110, CFAMETER sTOR 'VARIES'VARIESS (SEE CALCUtATK;It; IN I 1 t Y FERtJ_'O-;7'rLE COIiT�Ur:O 'HEY 51GLt;r OC ATERNIG ORIFICE r(SEET D1IAMEIETI 'VARE-540 CALCULATTIONI 7FIUM, CObFdf:APEO MEGL ;:IT£R AFPENDI)f 3.14-A) ttorii: WITH CONCRETE RISER. USE FPVC SCHEDULE 40 STUB FOR DEWAfERiNc ORIFICE rDRAINAGE TUBING SHALL COMPLY WITH ASTM F667 ACID AASHIO M2!9•4, Source: Va. DSWC a>, 3� -f�;�+ -••rail DOZER TREADS CREATE „_ •'` GROOVES PERPENDICULAR r 10 THE SLOPE, �e 7'RA CTKI1)jC-' Source: Mi t iaut t Soil Erosion acid SedinientatiG d� Dft.P Lodi -- -+-i../� PROTEerart IiE'rlt:E } - CLDR116 F,io CP,ACING vtr n� PROPOSED CWONG Khmer Id Ai K t r ,r A. �..�o ail:. s• �„.t' a1111111'Aa 'hHER-- DRiP1jt.E IS LESS 1IM14 C0>`IS`rRUCTION OPERATIONS RELATIVE TO THE LOCATION OF PROTFCTFO TRFF 3.38 Source., Public Facilities Mammal, Vol. 111, Fairfm Co., Va,, 1976 Plate 3.38-1 Source: VDU'I' Road and Bridge Standards Plate 3.36.2 B/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stand Foundation Cells (Spread) Foundation Cells f©r Other Typical Structures Steel Detail & Assembly (Pier) (Spread) Plate 3.14.15 Plate 3.29-=t c VA11LE 3.31-C T S -I'E,NIPORARY SEEDING PLANTAIA'TERIALS, SEEDING RATES, AND DATES SEEDING RATE NOR`CHa SOU"I-Hb PLANT 3l1 5n 8115 2I15 to 51t to 9/1 to SPECIES CHARAC'TERisTicS Acte 1000 R"- to to to I/JO 8/15 11/1 4130 911 11115 OXIS 3 bu. (up to 100 tbs.. 2 Ibs. X X Use spring varieties (e.g., Noble). (Avna sativa not less than 50 tbs.) RYE' 2 bu. (up lu 110 Ibs., 2.5 Ills. X Y x x Use for late Tall scedin;s, winter Seeate cerc./le not less than 50 lbs.) cover. 'tolerates cold and low moisture. GER6fAN MILLET 50 Tbs. ipprox. 1 lb. X x Warm -season annual. Dies at first Setarla IIaI1Ca Frost. May be added to sunuror mixes. ANNUAL KYEGKASSe 60 lbs. I Ih tbs. x - X X X May be added in mixes. Will Odium multi-Floruu,) ntow, out of most stands. WEEPING l5 Ibs. 51i, uzs. X X Warm -season perennial. May LOVEGKASS bunch. Tolerates hot, dry slopes fErug�ustis eurvula and acid, infertile soils. May be added to mixes. KOREAN 25 lbs. approx. 11h Y Y Y X Warm ease n annual legume, LESPEDEZA` tbs. Tolerates acid May be Les 'Mara sti ulucea added to mixes.suits, a Northern Piedmont and Mountain region. See Plates 3,22-1 and 3.22-2. 1i Southern Piedmont and Coastal Plain. ` May be used as a cover crop with spring seeding. d May be used as a cover crop with fall seeding. X May be planted between these dates. May not be planted between these dates. n E E MERIT C0�1TR.OL U�,�NT�TIES STD VESCH.,..... SON A E D ..I�.., SEDIMENT CONTRQL_QUANTITY - MAT STABILIZATION 60 EA 3.02 CONSTRUCTION ENTRANCE 1 EA 3.03 CONSTRUCTION ROAD STABILIZATION 280 TONS 3.05 SILT FENCE 1887 LF SUPER SILT FENCE 420 LF 3.08 CULVERT INLET PROTECTION 1 EA 3.09 TEMPORARY DIVERSION DIKE 500 LF 24" CULVERT 70 LF 3.10 TEMPORARY FILL DIVERSION 480 LF 3.14 TEMPORARY SEDIMENT BASIN 1 EA 3.17 STORMWATER CONVEYANCE CHANNEL 710 LF 3.18 OUTLET PROTECTION 1 EA 3.19 RIPRAP 1805 TONS 3.20 ROCK CHECK DAMS 4 EA 3.30 TOPSOIL 0.50 ACRES 3.31 TEMPORARY SEEDING 1.00 ACRES 3.32 PERMENANT SEEDING 0.50 ACRES 3.35 MULCHING 0.50 ACRES 3.36 SOIL STABILIZATION BLANKETAND MATTING 575 SY 3.38 TREE PRESERVATION AND PROTECTION 925 LF GeosynteCl> Consultants opif o No. i vo ssIoN XL� a 001' Dominion -fMf 1©la 12-9ts r� Energya EROSION & SEDIMENT CONTROL DETAILS GORDONSVILLE SUBSTATION EXPANSION ALBEMARLE COUNTY, VIRGINIA W ,- Name Date Project No. Sheet No. 4 OF 20 ) IIA M to Designed by T GEO 06/20/l8 99-2523 Approvals TER 06/20/18 Scale Approvals I N.T.S. B/M No. Revisions IA w °' o j �Wz Cod File Nome v o V) �]j��Draw((ii7n{�g (�N7jo((.7��((7�{1 PLOTTED sftissfss$ssSYT1ME I[J000-I000 z a 64 C 0 a O X U U 0 m 0 Z U Revisions z IN m r• •� I DB 783 Pg 758 --� SEE '•�.� (Parcel 65) m NOTE 8 w •�• LIMITS OF ` o o~ .•� I ��c��URBANCae{ �tAi 'Z .. on ent I 60"0.00,113a �l Md ' s•. 510 M'S Ile �• �.,•r -ice,,..+'-� '�- TS C� 510 Zm r fi .Ix 515 ._.' ._..� x Albemarle.-Caaaf y--- Imo, G.I.S. Designated I x°' Critical Slope Ared-_ / ' c (SEE NOTE._6)- _ �/ ' I� `.`-------- - --_ 1 ao l \Br,ush x B / x, x x � � i I Mixed Woods M•bnu n t: Fou Ground Mott o N: 67297,99.8 115063Q06.1 •a .. 0 1 2 3 4 5 1+ 7 8 9 10 11 12 EXISTING CONDITIONS LEGEND �•� s`T9 x x x x x x- - FENCE LAWSON, ALBERT J ESTATE ��, Deed Book, Page (WB94, 704), Transaction �. -off - EDGE OF WOODS FERRED ESS Tax Map *37111B `'' • f . ,Aft - OVERHEAD ELEC. Zoned Rural Areas District, RA `"• 'S'T -SETBACK LINE LIMITS OF Magisterial District: Rivanne Mixed o DISTURBANCE Use:..Vr�carjt-ResidentialLand _..� Woods 'l�� ---- - PROPERTY LINE (SEE NOTE_.9)-•., �• Area = 101.71 Ac i Stream G-. �.i \� SS TP EXISTING WETLANDS Al A -----� x x ... - �- Jj3MonumentTL' F Found - PROPERTY LINE LIMITS OF DISTURBANCE 1 ` • �' �'� R/W - RIGHT-OF-WAY (SEE NOTE 9) MS w; \ 0 H - OVERHEAD = _ 35- READ SETBACK LINE \ TOC - TOP OF CONCRETE F ;. _ I 7W - TOP OF WALL - SPOT ELEVATION 0 DIRT GRADE s S . E -NOT E . 5) ,A I SF TP \ 1 �:-_,. - Xis • _.. N1ix d--MixedBOLLARD 'bb`o�ds- Woods t © -TELEPHONE PED .... TS' N �:;.; :�:' �.` DSO - MAILBOX O Ei - ELEC JBOX ..... 1 HH HAN HOLE 1 ' IL[+�a - CONIFEROUS TREE PREFERRED- .�nT 1. a l� ACCESS 4. 4 - - •� POWER POLE Wooden CD 'ty Mined Conc. I! Woods '♦ - -GUY WIRE PQs t \ �x Foundations �.� 'ad (Typ) \ �j �--�� `�� ( /„ •♦ EOl -END OF INFORMATION ♦♦ o o t1' Mixed rf,. `/ �� .. Q9� �� '♦ ENERGY. �'' . DISSIP-ATOR <7'' (SEE-' NOTE 11) o C:) � -,_._ -�; �' •ems. { 1 yV-11 1 rv� Ol ry •�•x., . I� t 'x Groun�/ Mat Grou o SF- o/- o� DD VP QA52 \ ' am co N :x 10 i i Q Ground -� ,', CR .SF :'�►. o 0 0 0 �' Mat 'i ♦• VEPCO 100' R/W N: S x EOl ____, SF I o o O p4 RR C ♦. DB 517 Pg 572 'Fo �p ' I i fiw �� ♦.♦ (Porcel113) I � I o o E�I ° 10 T Pa ° o °';$ I t- gh t _ x Ground o Z _ rush M o oc 517.1 SEE NOTE 2 p, I:O O o O W O o, o o i \SOO ' x ��' R ,� EMERGENCY s 4X4 Ground , $ ` ,� g�. SPILLWAY � c' I Wooden A& t . �. I c 2 ---�'-------$M 185 `� �.Ed e_of Berm 1_ Tall �TX ,_ J Lit o \ ( Y , I \� Gate Wooden F- c Q \ x Q � ` ` ) � Grass-: �---- .W i of Post ✓ . • \ � �-'cr 41 0', Imo. f00, o ct o o \ II m i. VPI PA67 / \ _ Pat ` `\ -`'p;r ._: _ •GR,'ASS _ �' VP'.Cd493 / \ ?1 Q o 7oNNo ORDONt• O� ° �' `=�=:::::. =ter :� ` - � �_� Q Q�Q� ,Lo -• WO,ods\ NO ca C)O ^ r Q O M Qo ��a,� �----- -- -- �oyyoo \ Q u°�°a°� Z P-� x _ �REFERR€b' ds �T \ � „ o a� (O cn c / Rod _ ACCESS t ,a� } n, Z aa ► �° o g `� Fouri ALL TEMPORARY ACCESS ROADS WILL BE REMOVED AND RETURNED TO PRE -CONSTRUCTION CONDITIONS WHERE APPLICABLE. Q 0° N r CE ab _ _ Access Road r \ It 3 o g J xv� 1 �'' 'R=-:��- d ~ �� \�'.,; Mixed Z' .. oq N Wood J a', •� _--- _ _ \ � ma's ', � oMixeVIRGINIA- - EL- ECTRI-C & �:� `� \ x o I i o V1Woods ,i _ - --O WER- -0::WAN Y Medium" Brush-311, "' / -"� Gordonsville Subs`t`C qn ••--_._ � `� �� 785 to Northerly R/W Line of I �o # _ \ �\'•, ` � \�� Gordonsville Road i & / Tax Map �7,11A / Crtt Over / Deed Boak-.,517, Page .434\\ ••1' ..\. `� Monument 520�.� / paned -Rural Areas'•DlstrlCf,'•RA � � / Founr� Ma isteriafDistrict Rivanna \ .' ate Mail Box' TPED ,,� 9 ,510 SCALE 0 40' 80 CONTROL:: I/ Use:. Vaeant Wesidentiol Land ,,.•�-- / . ;i _` -X x�' --- - GORDONI x ,/ Area = 9, 04•. A��.• \ } X=-=k ' X _�' USGS BRASS (DISK b flutter NORTH - 6729309.02 / SINE �-- Cur 6) __/ _ EAST - 11562748.48 �.�RpNT _.ETBACK--_ p7.74' �-.• 'r'.� t Route 64 5 ELEVATION - 524.50 / 25. 6 ow (Stye ___----- - /...r �- --- N.42° Q6 30 _ _-- �/ERS L� 'NE Width_RI - -; 9 BN-105 RIVV _-_- L"O Vag _ _- •B•M• S TRAVERSE NAIL SET x -------�� / _-- --�` NORTH 6729224.46 -- - - - 62 1 TBM FOUND 3 - TBM SET EAST 115 886 41 / (TyP• x--x: ELEVATION - 517.24 Wire fence / - l ___--- TOP OF CONCRETE MONUMENT CHISEL SQUARE ON N.W. CORNER TX. PAD Monument '� yX--`x ---- ELEVATION - 508.75 (NAND 88) ELEVATION - 517.13 (NAND 88> / x--x _ --S - BN-108 Found _._-x ;__�-- ----- TRAVERSE NAIL SET , x.��`� _ 2 TBM SET NORTH - 6729498.24 -----' CHISEL SQUARE ON N.W. CORNER TX. PAD EAST - 11563068.20 -- ELEVATION - 516.83 (NAVD 88) ELEVATION - 520.22 Typical Drawing E ibrary Location Cell Name B/M Assembly Pipe Stand Foundation Calls (Pier) Pipe Stand Foundation Cells (Spread) Foundation Cells for Other Typical Structures Steel Detail & Assembly IUSERNAMEs Inf ormation (Pier) (Spread) EROSION AND SEDIMENTATION CONTROL LEGEND-- VIRGINIA NO. KEY SYMBOL TITLE 3.02 gGGIGGAM CONSTRUCTION ENTRANCE 3.03 CRS CONSTRUCTION ROAD STABILIZATION SHT 4 MS MAT STABILIZATION 3.05 SF SF SILT FENCE SHT 4 SSF SSF SUPER SILT FENCE (SEE NOTE 9) 3.08 CIP CULVERT INLET PROTECTION 3.09 S TEMPORARY DIVERSION DIKE 3.14 S SEDIMENT BASIN 3.17 SCC CCCC CHANNELATER CONVEYANCE 3.18 OP OUTLET PROTECTION 3.19 RR RIPRAP 3.20 CD ' ' ROCK CHECK DAMS 3.29 SR aSR SURFACE ROUGHENING 3.30 TO c TOPSOILING 3.31 TS TS TEMPORARY SEEDING 3.38 TP TP TREE PRESERVATION AND TP MAY ALSO BE PROTECTION SHOWN AS SF & SFF LOD LIMITS OF DISTURBANCE LOD MAY ALSO BE (SEE NOTE 9) SHOWN AS SFF LIMITS OF CLEARING SEDIMENT BASIN DRAINAGE AREA (3.6 ACRE PHASE I E&SC D.A.) 505 MAJOR CONTOURS (5-FOOT INTERVAL) 501 MINOR CONTOURS (1-FOOT INTERVAL) ��j DEMOLITION OF FEATURE NOTES: 1. REFER TO "TOPOGRAPHIC SURVEY OF GORDONSVILLE SUBSTATION" DRAWING 1 OF 1 FOR SURVEY NOTES AND EXISTING CONDITIONS. 2. REMOVE EXISTING SUBSTATION FENCE, OIL CONTAINMENT BERM AND UTILITIES ONLY AFTER APPROVED AND DIRECTED BY DOMINION PERSONNEL. 3. REFER TO SEDIMENT BASIN DETAILS ON SHEET 9. 4. REFER TO SHEET 2 FOR THE PHASE I EROSION AND SEDIMENT CONTROL SEQUENCE OF CONSTRUCTION. 5. PROTECT EXISTING WETLANDS WITH SILT FENCE DURING THIS PHASE AS SHOWN ON THIS PLAN. 6. CRITICAL SLOPE AREA DESIGNATED BY ALBEMARLE COUNTY GIS CONTAINS SLOPES GENTLER THAN 4:1, THEREFORE AREA IS NOT CRITICAL TO IMPACTS. 7. THE ALBEMARLE COUNTY 100- FOOT STREAM BUFFER IS IMPACTED BY THIS PROJECT. HOWEVER, DOMINION ENERGY, SERVING AS A UTILITY IS EXEMPT FROM STREAM BUFFER MITIGATION. REFER TO SHEETS 6 THROUGH 8 FOR ADJUSTED STREAM BUFFER LOCATION. 8. LIMITS OF TREE CLEARING SHALL REMAIN ON DOMINION ENERGY PROPERTY. LOCATION SHOWN IS FOR CLARITY WHERE ADJACENT TO OTHER ADJACENT E&SC PERIMETER CONTROLS. 9. SUPER SILT FENCE AND LIMITS OF DISTURBANCE ARE IN THE SAME LOCATION ON THIS DRAWING. 10. MINIMAL TO NO EARTH GRADING REQUIRED WITHIN THE LIMITS OF DISTURBANCE SHOWN INSIDE THE EXISTING SUBSTATION FENCE. SILT FENCE SHALL BE INSTALLED IN THIS AREA AS SHOWN ON THIS PLAN AS A PRECAUTIONARY MEASURE IN THE EVENT ACTUAL EARTHEN DISTURBANCE TAKES PLACE. 11. ENERGY DISSIPATOR SHALL BE CONSTRUCTED DURING PHASE I E&SC CONSTRUCTION. REFER TO SHEETS 9 AND 10 FOR ENERGY DISSIPATOR GRADING AND DETAILS. 12. IF DOMINION ENERGY INTENDS TO TOP DRESS EXISTING DIRT ROADS WITH GRAVEL, THE APPROPRIATE PENETROMETER PROTOCOL SHOULD BE FOLLOWED. Geosynt � Dominion consziltants Energy 'TMi Professional Engineo Approval PHASE I EROSION & SEDIMENT CONTROL AND DEMOLITION PLAN GORDONSVILLE SUBSTATION EXPANSION CYI ?• +' ALBEMARLE COUNTY, VIRGINIA v) » M a « c»w �+ o Name Date Project No. Sheet No. 5 OF 2 0 Designed by: GEO 09/21/18 99-2523 Approvals TER 09/21/18 Scale Approvals 1'=40' B/M No. Revisions Cad File Name 0000000a.dgn Drawing No. 0 0 0 0- 0 B 0 w .6 a. » PLOTTED: lsss•s*slilSYTIME 0 1 2 3 4 5 7 8 9 10 11 12 .- -�• •�• EROSION AND SEDIMENTATION CONTROL LEGEND - VIRGINIA �,/•� I �•�•., 4� s� NO. KEY SYMBOL TITLE NO. KEY SYMBOL TITLE �• VEPCO 100 R/W LAWSON, ALBERT J ESTATE �. •i' DB 783 Pg 758 -----I m SEE RELOCATED Deed Book, Pa e (WB94, 704), Transaction 29 .� (Parcel 65) NOTE 7 STREAM BUFFER g # �• �y2 3.02 CE CONSTRUCTION ENTRANCE 3.19 RR � RR RIPRAP SLOPE �•� 200379121 (SEE NOTE 5) LIMITS OF ,�• F Tax Map *37-11B �ti CONSTRUCTION ROAD •♦ o W 8� o� 3.03 CRS 3.20 CD ' ' ROCK CHECK DAMS -DISTURBANCE t� Zoned Rural Areas District, RA ••. �y STABILIZATION \ .•� / (SFF NnTF R) LIMITS OF MagisterialDfs•trict: Rivanna Mixed \ �`�•�..�, Q. O E f ' a a Coz O Y a 0 a z cU Revisions *USERNAME$ Men t� 510 ,fir and �- ` DISTURBANCE (SEE NOTE-8) •. Use.1/acarit'f�esidentialL•arad..-__ \ Woods "� • �• : ,;� �'�F� • 3.05 SF SILT FENCE 3.30 TO TO TOPSOILING SF "; _ • - Area - 10 1. 71 Ac 1 m SS TP ..- -- SHT 4 SSF SSF SUPER SILT FENCE 3.32 PS PERMANENT SEEDING x- x Monumen LIMITS OF `w `�.. �.. "� ;. • • " �,,.. '. �'-��; Found 3.09 DD TEMPORARY DIVERSION DIKE 3.35 MU MU MULCHING •^, DISTURBANCE RR • (SEE NOTE 8) """�- 3.10 FD TEMPORARY FILL DIVERSION 3.36 B/M / SOIL STABILIZATION 4 s :: -.. 35' REAR SETBACK LINE BLANKETS & MATTING "" \ -' SEE NOTE 13 ,d 3.14 SB SEDIMENT BASIN 3'38 TP \ TP TREE PRESERVATION AND SF TP �� 3.17 SCC O CCCC STORMWATER CONVEYANCE CHANNEL (SEE SHEETS 8 & TP MAY ALSO BE SHOWN AS SF &SFF PROTECTION C / R/,� 9 FOR LININGS) LO LIMITS OF DISTURBANCE Mixed ALSO BE E NOTE 11) x R Woods \ z 3.18 (OP OUTLET PROTECTION LOD MAY SHOWN AS SFF (SEE NOTE 8) x------ _ �o � � -11 j W � ,� '' • _- •�. � � _ LIMITS OF CLEARING �• -� ' ~'�, �• �S 3.19 RR RIPRAP 510 ---*-STONE TABI IZATIO -� ` ,.-'�O �..•-•� Light " (SEE SHEET 7) CD '" RELOCATED �• _..- r�s / �' � ,� •' •. � SEDIMENT BASIN DRAINAGE AREA �h �,# STREAM BUFFER •�•/ �"� "� (4.0 ACRE PHASE 11 E&SC D.A.) / .$N=106 t; : (SEE. NOTE 5) --------x x x - -x-x X_X FD C. -a ov f 1 CD o li� PREFERRED I '� _�-}�--"i--001 ao� (10� Q0� ACCESS •� 15 X ;� jo�c• R c •` �_ � 5 Fo ations1Nized j x N -, Conc. Woods F fib' a ( c NOTE Tx Pad (T ) o z z0 o o 'F1� Mixed \ ` .:. `� '�� 4gS �� •`'♦ (' Glloods I �%� '♦ / z 'W r 0 o b (SEE NOTE_]2)_ / �� ' o 0 0 o i cn SF i Rj RR �.,. i Q x� o 0 o t- 2 w o I o 0 0 'o 1 i�� /'( - •---_•.... i I round ly ' ` ¢ �' C9 -- ----- �s Cable ollord % o ° I SF TP � I. z I Trough Ground tiIo i ' ` �' '♦ ' r SEE NOTE 6 Light \ N: 6729Z99.83 i ' i o �G j ENERGY Brush `� E:11 0 .18 '(SEE NOTE 9) , _ DISSI ATOR x X Ao q ° i i ' DD o ♦ OP , EE NOTE 11) TION B ® B \ \ I , i �Co trot 0 0 o i o o i90 i Enc sure i r✓ E �, o Groun?t ° p H i !=F= 16.9 Gro�rnd Mat -_ 1 x :0 x N � F�v�� N-1-6 �� : •, \ ` Mai 3 i i RR Mixed t 11- ° G oun i i i 6729269. a o ; �b ©� \Woods y i ° § ,� 3�- �M t ► 11562960.02 N ° $ " SB 0 1 '� Mbnu -in ' Groun Ground d i �'a---o °� �. o Fou �� j Mato ° M 't C D ° i Co x SEE •�� A : S32 5&37 E: and SUBSi' 01� AS LINE T x' i J 90°I i FO 01 00. ` •`.x A i Groun at i ! SF - Of o DD VP nA52 \ 'r Gro' o o ----- , \ j 0 �' U' (10-1 , �► I MOE o F v CO `� V x o °o 0 0 �' Ground d J x R \ �� VEPCO 100' R/W ' ' '�, DB 517 P 572 ° (Parcel 113) --- SF o o cn RR, 9 ` n , G %{ � �'� • I o o E• l ° `�' i T Pa ° o•;o �ght \ %i X GrAd ° o i Z oc 517.1 o , rush v M M , W O SEE NOTE 6 j �O• Aso ° O O p o r :o 0 0 ® EMERGENCY l 4 x 4)X4 i v o g&1• SPILLWAY - �s , Ground I _-- r' ( X Wooden Mot ' Z %--- E' t--------*-BN-a ` Ed _e_of Berm 1. ' Tall (T U ` , / '., Gat Wooden CR Q �� \ «; o �o K_� Q Q Q v\ Ix m - I' �raa." y�o Post \ \ VPI PA6_7 ^h. `""' -- Pbrst �' ❑ en; IN,GRA - VP'.L? o o W m L :_ _ __ - T�_ n N N o a°i r:i(N2) _GORDONI'. .� .:. o c_ O ♦rr �► ♦ � \ r.........r MixeC}\�- TP Woods\ �°LU �� Q°, q)o r"'.. -`r Qe°r�1gi \ c J N�v.t3oo °��' °- p0� _._ P-REfERRE� °°ds' \ \ Q' o iu Rod ACCESS `• �T,oJ \ ° L Zi Jo o 3�\�'Mix \ WOOL\ /� ELECTR/C &X x Woods V/RGCNFA N J o __PZ)rWER 7$.5' to Northerly R/W Line of Madium-•BrusbA:' / Gordonsville Subsfbr n �� `:� '' �S Gordonsville Rood ,ice' & �•" / Tax Map 37:-11A \\ •�` `\ \\ .�--" \'e Girt"Over / Deed Book-_5.17, Page ••434 M Founent / / Zonec} RuralAreas' D,is tric �;-R• A �- -w ._, \ °`� Z 52 / Magisterial District: Rivanna "ate Mail Box'. D `51Q_ Use:_. oe&t_ResidentiolCdRd �,t �� /•� "' X_---X� "X!� - - X / Area - 9.04Ar... Curp/cutter "---------- _ _ RONT $E ACK�- 6p7 �4 :�.-. _ tote Route LINE !._-- :::: f,42° p6 = - vER L ble Wid h-- - - R/W _ L"� VoF1- ALL TEMPORARY AND RETURNED T( / _......... WHERE APPLICABL / Wire FAX - ___-- Monument / '"' _ _ -- - 515 Found X --'Xx- t-X - - -- _ Typical DrClWingil Library Looation Cell Name B/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stand Foundation Cells (Spread) Foundation Cells for Other Typical Structures Steel Detail & Assembly Inf or -motion 11 1 1 1 (Pier) (Spread) GENERAL LEGEND EXISTING WETLANDS REMAINING AFTER IMPACTS (SEE NOTE 10) 505 PROPOSED MAJOR CONTOURS (5-FOOT INTERVAL) 501 PROPOSED MINOR CONTOURS (1-FOOT INTERVAL) NOTES: 1. REFER TO SHEET 5 FOR EXISTING CONDITIONS LEGEND AND DEMOLITION ITEMS. 2. REFER TO SHEET 7 FOR SITE PLAN DIMENSIONS. 3. REFER TO SHEET 8 FOR GRADING, DRAINAGE & SPOT ELEVATION INFORMATION. 4. REFER TO SHEET 9 FOR STORM PROFILES. 5. THE ALBEMARLE COUNTY 100-FOOT STREAM BUFFER IS IMPACTED BY THIS PROJECT. HOWEVER, DOMINION ENERGY, SERVING AS A UTILITY IS EXEMPT FROM STREAM BUFFER MITIGATION. REFER TO THIS SHEET AND SHEETS 7 AND 8 FOR ADJUSTED STREAM BUFFER LOCATION. 6. EXISTING FENCE MAY BE DEMOLISHED DURING PHASE 1 E&SC CONSTRUCTION PER DOMINION ENERGY'S DIRECTION. 7. LIMITS OF TREE CLEARING SHALL REMAIN ON DOMINION ENERGY PROPERTY. LOCATION SHOWN IS FOR CLARITY WHERE ADJACENT TO OTHER ADJACENT E&SC PERIMETER CONTROLS. 8. SUPER SILT FENCE AND LIMITS OF DISTURBANCE ARE IN THE SAME LOCATION ON THIS DRAWING. 9. MINIMAL TO NO EARTH GRADING REQUIRED WITHIN THE LIMITS OF DISTURBANCE SHOWN INSIDE THE EXISTING SUBSTATION FENCE. SILT FENCE SHALL BE INSTALLED IN THIS AREA AS SHOWN ON THIS PLAN AS A PRECAUTIONARY MEASURE IN THE EVENT ACTUAL EARTHEN DISTURBANCE TAKES PLACE. 10. 0.14 ACRES OF WETLANDS ARE IMPACTED WITH THIS PROJECT. REFER TO SHEET 5 FOR THE EXSITING WETLAND LOCATIONS PRIOR TO LAND DISTURBANCE. 11. STORM CONVEYANCE CHANNEL WILL SERVE AS A TOE -CHANNEL AT THE BASE OF THE NORTHERN FILL SLOPE AND WILL CONNECT REMAINING UPLAND AND DOWNSTREAM JURISDICTIONAL FEATURES. REFER TO SHEET 10 FOR CHANNEL SECTION. 12. NO CRITICAL SLOPE AREAS IMPACTED. REFER TO SHEET 5 FOR ALBERMARLE COUNTY GIS DESIGNATED CRITICAL SLOPE AREA WHICH DOES NOT QUALIFY DUE TO HAVING EXISTING SLOPES GREATER THAN 4:1. 13. REFER TO SHEET 5 FOR CONSTRUCTION ROAD GRADING TOWARD THE NORTHERN FILL SLOPE LOCATION. GRADING FOR CONSTRUCTION ROAD IS NOT SHOWN ON THIS PLAN, AS THE CONTRACTOR SHALL PROVIDE ACCESS TO THIS AREA AS PART OF THEIR MEANS AND METHODS. 14. IF DOMINION ENERGY INTENDS TO TOP DRESS EXISTING DIRT ROADS WITH GRAVEL, THE APPROPRIATE PENETROMETER PROTOCOL SHOULD BE FOLLOWED. Geesynw � Dominion �Me t �► �,tB Energyf Professional Engineer / Approval SCALE 0 40' 80' PHASE II EROSION & SEDIMENT ' '> CONTROL PLAN GORDONSVILLE SUBSTATION EXPANSION ALBEMARLE COUNTY, VIRGINIA r M Name Date Project No. Sheet No. Designed by: GEO 09/21/18 99-2523 r, 6 OF 2 0 M M Approvals TER 09/21/18 Scale Approvals 1'=40' 746 M N w Bl1JI No. Revisions Cad File Name 0000000a.dgn Drawing No. w PLOTTED: sssss*sssssSYTIME 0 0 0 0- 0 0 0 o L m Q. O a a m E z X 00 m O N L _t N m 0 � d Z U Revisions sUSERNAMEs 0 1 2 3 4 5 7 8 9 10 11 •� ....... r.r. r. r.raruaL.r. r.r• •r. r.• ♦i ':: �'� I 26.1' 93.9' 14.5' 50.1' 130.4' ♦ ` �,•'' vEPC 00' R/ W LAWSON, ALBERT J ESTATE'� `s- , ,00 �DB 7 3 Pg 758 L___- U RELOCATED Deed Book, Page (�WB94, 704), Transa� Lion '� -off �0#0 (P rc 165) m STREAM #200379121 '♦,�, ti9�F ✓••,0• I I to 1 BUFFER Tax Map -=37-11B `'''�•..• 9�� /�'11 • o Zoned Rural Areas District, RA �"�'".•..,,`• � 'pT .'� I I WUi. Magisterial D�:�'tricr Rivanna Mixed •`•-ft. y,;�_o s' j / ' �, ,jy Gj.,,• � �'t1. Use- Jlvcvrit"Resirser}t,�al�anci. Woods •.,,.'� . �� ° '� I .t, � �l, o t `�•.' S t r �, rn , ' � Area = 101. 71 Ac . ..... ;. , , °Q 1- - 1vlonu rent ;� - 60,0.00' S Z$ 57 E- w \ ,V �'.ez.• � W_ _ �;" :: w \�' d � �- --' - -- i ice. - .'=410 = _ = - �X -��i-x -t r t-?� X r��-3�"y1,77t- - . mac®-- :r�s' c� - Js®- X t-®s" - s�-�irx-�<---- i®- - X. M o n u rn e n t mound . r.-f - - - -t-�7 -- .' __ - __ �. `� Found 510 17i_.__. -.--- �'� X 4 � ��'/1 � - � � ` �`% :. �' ' ' � .' 35'• R AR SETBACK LINE .. M x v \ '` ;,, \ '� ! �.� �... ��` \�. x rn •r'. :: ::Y ;: �. 1 'Cvl .�: f.' ::: i! : {:. �� d f :;:: .. .. . ........................ . ................ `� I '` ti L' .. .. ...... •:i': I �\ . ............. .......... .. a 1 '\ ! ! X .. \ � � ed J 11i i _\ •.�^::::•• '•(•' Woods -' I' : {::.. .. ...... ':ma 's *,�,.. f ::,:::T. ( 1IRo ) ;, .'................. ...'.R55.'....... :.,...:,.r�r....: :.• •I' •:. ' '.'... "+• k ' ��1 . `� ,,zzi�:,_ � `:£ ' O r a. -..��' r_. s 0 1 I. .... .... d* -,- :c'xi:.' .... O Light. ....... .............. ..............I.'..... ;{ ... �. ...... ............. .... .... ao B.+ ( ...... .............. .... f::. ......... r. ' JJ I' ..... ........ ... �r ' 9 / .. ... .•1 •::: .I• .. . . .�' �:':.. N . ( _� X.'...... ......... .' ,� . 8N' . bg , j% i f :'J':............. I........ , , .. , '� RELOCATED- % .,� �/�O I x :.t::: 1 R55 RCS... \. °I STREAM - •♦ z r �,,r .. ...'.I.......... ,c. (. ,� X t' - �X f l Conc. - 14:4 : `` . 4<��;BUFFER.. x. �, 515 �" I Fo ations 36.3 22.7 55.2 + t6:0� .'•2'S:t:.Ll. :I: 't..� \ M l Mixed \ e �,,,•!'� X I Canc. :.,. Xf „� II/Dods 116. o R55' Foundaticr,s +' ' '' :' { I � EQUIPMEINT ° Tx Pad :.:.::... ;:;: = ; / •♦, t 2 (3CESS cROAD T.'OC=516. 3 `'" "' :1 (T`(P) o `r.. (I :{:. I , j '� �1ixed �9S !c �, ':' I !� ,i • ?:.J :.•,IO O , 0 : :j:t•::: ` • : • • tl ; .'� 1� Ili/OOdS .�/;,., >1 v �y o o f.�:::: t. 1j, I I.' w Y 1 . . .J..: I'.0 , i ::•: I� � ' ./ z �. 520 ' 0_ 0 0 0 05 1 �� o I o 0 0 ;o o *+::::t `> i J - •p ' .��.... ; �_.- round Mc t'+',' •i (SUBSTATION `':�. �..•._:1_! .-..... i;;1 . :� b >- 0 :,:. ,, a I . ,'t,. :{:.�., J SECURITY ,::.:��- {'i '� -k,.. -- � Cable-\,� Bollard ITyp-, - Q� , m ,, _ ':::: f ::: t � cu xU Trough �� - .,�: t '•f:::. ; I �. + \ W °' ENERGY Lj_. c I :. ':: I :: f::: I:: v, •L ;::.:;1.R55 , I I :I:- .I x Ground Plat . - CONTROL + , �'" I : qti ,• DISSIPATOR f ••f::::::: I - �=. -_.R8-S a:• �'- :i , ENCLOSURE; - \, %II ' rl L:igh r \... X N* 6729299.83 �' �' ...... i' o; 0 . ° ° �'\ 1 '`ti BrI sal t:::I::::{::;:::::::::::::::: I I �, j CONTROL ::::: '� a `n,, ; ` \a 0 u E 11563006.18 .: ...............:::::::::. 0 I "I I � ° �`::1::::; :.; , Imo-- ENCLOSURE: }: ; I ♦�� •. :::•:::.......... { ...r:::: I M ` , , .`. Imo' ' X I SUBS(TAT10N1. :I:;::I t BASELINE I .. x B `� � ° ,. :Itr:':: ' :Co trol o o o r:fr:r. , SwM_ =\� y' ' '\ • o •. Fncl sure I E : :.1.1 \ ( - /---,`..5). t:.: l V �r � • : I ° \D c Grdungl ;.' "" FF- ` 16.99 i- Grocand Azlat {:::, 1:: FACILITY ,r F,HH ::2 '� �(r �' 6I " Mat r.::+:::: ` - :oSEE 1. o 'N �r \ F Mixed \ ! o�' G aun,1 .I::::•:: I - -- a� 14.Q' ...... NOTE 6 �, . ., co O `. 0 J� �- Woods : o d t 11-7301 ,.` 1M'I t :I: �::.; i N� 6729269.92 c�c v o ::�::: I.i- °� �• 1) o '�0 o t: `, \q � Mbnur ent: I �< Ground Ground 1I;w I E� 11562960. 2--2__0. D �, �;- , r\ :� - -�" �.' Fou Matc�� o I Mat [p 0 F ��d I''` �' SUBST TIO c` AS LINE }::.:: 10 / / ``'-1 ' I � ` 9S A S3275637 E'er ...'• ��, _ •' A :X Grount� Mat Groud[]� p °I``' ---- - I ' �� r: � \ " ". � � I . / I Q 52 �. O I C� y r O I :::a1 'I I I �\ �� ': fr i�� .: IN : X I ::I:'' I'. i-- Ground *• o r ° o a : ±:::�::, Mat : :::.:: }� vEPco goo R/ w i`II=: I • ' I •.:�::: :r '♦ DB 517 Pg 572 �. s I, ; s'. I I.0 -' � I'�` �- -.ME GENCY• (Parcel 113) F. E_ -- o - 0--�"'°` SPIL�L�IIAY - �{ 7 ♦'♦ Iz - t ,5 s/ 1� c -- - E: w •..:.:i:: • I 10 .o l, 0 0 0 . I�. r I ♦. I ' •F Groud o E I ° z `0 �,::�::;: is9 T Pa ° o. :j::::. I': Light o c::.: I:! 171 0 0 o h \ "" I .I' ' 7, . ' o '01:::j::z.- oa 5 :::. ..1-1 %�( , I , \ '.... I :O O o o .,•:: *, +, ' ,, o ° o a 0 ::. Soo ,9�.� Gra'und , I t S �E GATE R55' R35' `�'• _ Woo den lU' t }:I::': I , -._1- � \ .. .� --- z i • : ' �---- Po.st------=BN-105 �..., ::j: ' '.Ed�ce_of F3erm _"1_n _(alllTy ) _r;- - , :%:.' �, r --- _< a - _ I-- - - J-� I c Q � I Grass:.-.'. :,-"-..rg:z:.y{:::r:�;`:`'-:a:.:':: t.....,. / � , , -_ I �, ..... �r�: , - ° c (� m : r P' PA67 1 - _ •:'a:•. ..i, /[i -% VP .0; 5, �'� a ti_ w o a'. Cn.. �, c ° °e .........fIY .. , SLIDE GATE \ �( � Q Lw Ct- m ' U ` I �> . _ ..... (� /L . �- ��j `' :' { R"2.2""'. ,_ �. Ir;..yr .l Yi r-e�Y"�/ Y`VY Y� / �/� ,/ �`� I t =' o ; co � -- q O b+' .. ,� o 1 ' :.{...:%::: �, -''�' r i "fir ``� .. • ..:...... v' : �' r v . �\!...� aj o hN��:U��\�� JGORDO 1' !/\f� 1 0. '� ��''� '\a�,r� cn� �� .'. _ v., LLJ d Q n N �--1 /� j_9 .\\\i �.\1.\ •� � t �� ... + r WriOdS 'I'. W m Q) O ((( v\.� -- ®� t1 i CN Q o, # '` a °' 120. �' I to ... 106 I 19: 2 " :47 2 ' f 1'0 °� Q n, # ° 0.9 o _ ` O -&' X� ,� Rod 13.0' 1' �. ,_ i AJ L �° i , I Cc Sj ° � j I Z. / l "ouncJ _ ` Access` - '� - •.. / s I V)., Q -° v°'i m ti . �� _ boa` <� - ,' I k'Q ti �r a } ti 1, Wm d `� , \ ' Mix'd \ ° 4 crl ... tiftxzd.\- . �� • , ,� `, `\ X .o VIRGINIA fL EC TRIC & >y <,.- •-- ----- _- �'� _ _ .-, ---� •_..'PO°WER--�C.OMPANY�''•. :'•.,. � \\ �°;'•. • -- � '\ 1 ''•. 785' to Northerly R/W Line of �" Medi .rn Brush, �o // Gorc��rlsvil� Subs a and '«; \ \\\ ...:. \� ��- _ ._ ,S Gordonsville Raad _ . Tax V ' 1A T ''p -Cut Over / Deed Boa:<--517 Page•4.34 , •- r -1 Monument .r.y� / ! Founr�I 52 �,, / 7oned- ,Rural Areas 'District;'RA '� �- -� X --. `' / Mogis teriol Dis tric t: t?iv?nno \1. :rr .-- - _ . � ,..�,�•� Gate Mail Box LF'ED --- �,-_��.J�- _510 r /� Use.-Vracant'R sidentiolLond --"� ..,/ .•'�,.. \_� -` , _ y _--- x �✓ �. Area = 9.0"4-. Ate' \ ,i10 x7777 -k '.x�-E-ii-_:: ---ee'' l �- � z �• Gutter- ------- ---__- .. �, �''� K C'INE `�� y:; ; ` Curb/ 646). �-=51�- �, QNT ,�ETSAC_.., 607 74, J. Sate Route __- .. + 11 . N42°_ p6 , '� . _ ERS BAN ble( Width R! _ _ - ,�.�' �OV var/a . L_� ------,I- I .11* I ? _.��_ _� I/ - ___ - � -,..- - - Monument X X-�- __, Found ''� Y'•.'.``" X -_ - -- _ - 515 X__ x-" X-- - - _ -_-.---_ -- - 1 Typical Drawing Library Location Cell Nome I B/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stand Foundation Cells (Spread) Foundation Cells for Other Typical Structures Steel Detail & Assembly I n f orma ti on I I I I I I I (Pier) (Spread) 12 PROPOSED CONDITIONS LEGEND SYMBOL DESCRIPTION 2 21A COMPACTED GRAVEL 13 •57 STONE UNCOMPACTED GRAVEL 2 13 DETAIL & SECTION IDENTIFICATION SEQUENTIAL 4SHEET DETAIL NUMBER ON WHICH DETAIL IS SHOWN 1 P TAT( SECURITY FENCE 0 -x-x-x- PR OPOSED OSED SUBSTATION SECUR 13 n o PROPOSED MAJOR (5-FOOT INTERVAL) CONTOURS PROPOSED MINOR O-FOOT INTERVAL) CONTOUR PROPOSED TREE CLEARING -__-.__ �_____ - _ _I 14/ WETLANDS i _w_:____..,� .____j NOTES: 1. REFER TO "TOPOGRAPHIC SURVEY OF GORDONSVILLE SUBSTATION" DRAWING 4 1 OF 1 FOR SURVEY NOTES AND EXISTING CONDITIONS. 10 2. REFER TO SHEET 5 FOR EXISTING CONDITIONS LEGEND AND DEMOLITION ITEMS. 3. REFER TO SHEET 8 FOR GRADING, DRAINAGE AND SPOT ELEVATIONS. 4. SUBSTATION ELECTRICAL EQUIPMENT GENERAL ARRANGEMENT NOT SHOWN ON PLANS. GENERAL ARRANGEMENT MAY BE ACQUIRED FROM DOMINION ENERGY UPON REQUEST. O Ili5. REFER TO SHEET 9 FOR STORMWATER PROFILES. LO 6. REFER TO SHEET 10 FOR SWM DETAILS. 7. NO CRITICAL SLOPE AREAS IMPACTED. REFER TO SHEET 5 FOR ALBERMARLE COUNTY CIS DESIGNATED CRITICAL SLOPE AREA WHICH DOES NOT QUALIFY DUE TO HAVING EXISTING SLOPES GREATER THAN 4:1. 0 0 It It wi Geosyntec C011St1ltW1ts Dominion -�Mp �olgl�l8 omw Energy,t OPP- "a SITE PLAN s'�°�'� GORDONSVILLE SUBSTATION EXPANSION ALBEMARLE COUNTY, VIRGINIA p" 0 Q fA m w C,1 �� ` �;,YLB F: LaCL Zv Name Dote Project No. Sheet No. >_ N 10 4, LLC, NO, 0395�0 - 7 OF 2 0 w N Designed by: GEO 06/20/18 99-2523 Approvals TER 06/20/18 Scale SCALE %% Approvals 1'=40' I�ZlG N 0 40' 80' ,(JNP�`� S/M No. Revisions C 0 w Boa �Wi Cod File Name 0000000a.dgn Drawing No. 'o 0 N PLOTTED: stsssssssssSYTlME .0 a 64 m L 0. C O Q. n. 10 o � 0 Je U L U m m 0 Z U Revisions sUSERNAMEs IO r, r. r, r, r a r, r, r a r. r, r, r, r, r, r ,- r+' �• I f •I ,,•� VEPCO 100' R/W W •o' DB 783 Pg 758 •�,.� (Porce165) M m .s I 1-0 •�•� (2)DITCH 84 I NI MonLAen t ,60:0.00' S39, 57' ',E `ems, �•��'--- 510 flound uonc. Formations o :o ° w Coble— --� Trough Grounds Putt Mixed Woods ® 0\, 0 1 2 3 4 5 7 8 9 10 11 •i i, 49 LAWSON, ALBERT J ESTATE �'♦ s��T RELOCATED Deed Book, Poge (WB94, 704), Transaction •� �-o STREAM ,200379121 '♦ �iq'�F` BUFFER Tox Map *37-11B �''""•-•,�,, 9p �� Zoned Rural Areos District, RA AllogisteriolDis-trict: Rivonna Mixed "''"'•....,,a. �o Use ,llacarit f�siden` �;-,u.r�d. Woods Area - 101. �4c i - e X Xs X —�5��X -tee-- j� - X. Monument �' >t On l• ✓1 Found z ` ,,. ��``\ . �`,t',- _ .° :: ' • . 35' REAR SETBACK LINE �" .. • .. . v: : \ . ................ ............... :: ...................,:: ':• • RR; ' :;r. ,$ _Mixed Woods r.;:::::....... ............. <, a.;f.. ._: � 4*%, ` s O . . . .. . .. . ... .0 ' .. . . .. . �1• '.'.'.'.'.... ' :::... 1: 1 ' I ........ ,x. - Mixed Canc. .......... Uoods `• Faundoticns : :: :''': ` i �1 :`:°�, x i �• Tx Pod t',bo lTyp) I TOC=513 xj:: :r::• :' ITY Ih y f • :�`e / , ♦ Mixed F1 �1: . o O ;Ot :/ j' ............ O O O ........ . ®•♦ LID y 8 DITCH +1 ~Bollard (T pJ VDOT STD. PG- A si ° Vj� y .;! 9 13 0 0 S. VEPCO 100' R/W •�►• DB 517 Pg 572 ".....(Parcel 113) `--EM�RQENCY \ �--- } SPILLWAY _ I LLJ [ ) 1 • ``- T`� Y" �r' ! Y v-r." y' i yr �� y'w Y°Y�` Yam/ Vim.) ° o \ 0 ` C� M # ll O N �\ � �glJlxe ` lY `}` lLJ m cz .ice \ ,'' 1` Woods Q cJ ✓ d] :�: \`\ \\ _ Q a� v x Q'� ° �° ✓ _ . ... .. _oF'..... ...............Gy ! N a a a o I U / Rod moo° 0 III Access Rood `'- �m \ 1);Q j Ix v ` 6 , �, ` ` \ °o Crr�s s W o o d o ,��' / o Mixed. " VIRGINIA" EL ECT R/C & �� ``` \ �� \ x Woods OWBR- C-OMPAN1`•''•. 735' to Northerly R/VV Line of --' Medjvrn Brush. "- Gor�Qnsv'le Subsra4t on --•- Gardonsvi!!e Road +� O & u /Tox1Uo 11A'e, M onumen t�`` �— Cut' -Over fa / Deed Book-.517, Page'..434 .1 ' ;� •, •�, ��,' ------ ounce �0- / �' Toned 'Rural Areas''!7istrict;'FZA �_ _'` �,=-"T - `�- ✓+-ate Moil Box'•L TPED / Mogis terial Dis tric t 1" it nna �, �' �• �?` - _ �. / ,\ 510 _ Use...V-accinr Residential Lar7d `� . '! .,' �r x - X —'x . - x Area = 9.O.4-. Ate ----- ttPr capb/ �, .'� T E76ACK-" R_ U{e _6-4- 6> �407'Stote .y R10 WidthL,ANE 2ZSvaiabe O R/U - Wire o Monument d'�- _ X„y - aL Found 5,!5--- ...... Typical Drawingil Library Location Cell Name B/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stand Foundation Cells (Spread) Foundation Cells For Other Typical Structures Steel Detail & Assembly Inf ormation 11 1 1 1 1 1 (Pier) (Spread) x n GrouGrob d[ o ° od Mot o i Moto' 0 �O f' O o O O o I o '\ 'Y /' sf x 1F0 Eol=- r q• ;7 x Ground ° El ° o r; Mat ,� o . ° x 4X r' Ground (, x Wooden M-gt Poo -St -- I i -Grass--•.'-�':. • 1,deri VP� PA67 \ L Ulvo o v� .. 12 SCALE 0 40' 80' PROPOSED CONDITIONS LEGEND SYMBOL DESCRIPTION PROPOSED MAJOR (5-FOOT INTERVAL) CONTOURS PROPOSED MINOR (1-FOOT INTERVAL) CONTOUR 502.8' Jr SPOT ELEVATION PROPOSED TREE CLEARING .V --- ------w- WETLANDS �---------------------- RR RIPRAP FILL SLOPE (SEE NOTE 8) EC-3 LINED DITCH PG-2A CONCRETE LINED DITCH DETAIL & SECTION IDENTIFICATION SEQUENTIAL 1 DETAIL NUMBER 13 SHEET ON WHICH DETAIL IS SHOWN NOTES: 1. REFER TO "TOPOGRAPHIC SURVEY OF GORDONSVILLE SUBSTATION" DRAWING 1 OF 1 FOR SURVEY NOTES AND EXISTING CONDITIONS. 2. REFER TO SHEET 5 FOR EXISTING CONDITIONS LEGEND AND DEMOLITION ITEMS. 3. REFER TO SHEET 7 FOR SITE PLAN DIMENSIONS. 4. SUBSTATION ELECTRICAL EQUIPMENT GENERAL ARRANGEMENT NOT SHOWN ON PLANS. GENERAL ARRANGEMENT MAY BE ACQUIRED FROM DOMINION ENERGY UPON REQUEST. 5. REFER TO SHEET 9 FOR STORMWATER PROFILES. 6. REFER TO SHEET 10 FOR SWM DETAILS. 7. NO CRITICAL SLOPE AREAS IMPACTED. REFER TO SHEET 5 FOR ALBERMARLE COUNTY GIS DESIGNATED CRITICAL SLOPE AREA WHICH DOES NOT QUALIFY DUE TO HAVING EXISTING SLOPES GREATER THAN 4:1. 8. RIPRAP LINING SHALL BE INSTALLED ALONG THE 1.5:1 FILL SLOPE INDICATED ON THIS PLAN AND ON SHEET 13.1595 TONS OF CLASS I RIPRAP REQUIRED. Geosy teC Dominion -' M f 10 11I2�tg consulMuits Energy, Pol GRADING AND DRAINAGE PLAN OPP r� GORDONSVILLE SUBSTATION EXPANSION ALBEMARLE COUNTY, VIRGINIA t dpr � � 'yLF, E, LaCLA1R M Nome Date Project No. Sheet No. GEO 06/20/18 99-2523 VIC. No. 03)a�a � Designed by: �+ p, f U OF20 Approvals TER 06/20/18 Scale Approvals 1'=40' d `stof j'+ w a B/M No. Revisions c M w �U-iz Cod File Nome 0000000a.dgn Drawing No. o Uj N PLOTTED #s:s:s:ssssSYT1ME 0000-000 •a a te+ 1 3 4 5 7 8 9 10 11 12 L T m a o a 0 E z' m O N �C luI -C L 0 m 0 4J m a. zo Revisions SUSERNAMES 4200379121 Tax Map 1137-118 �� Zoned Rural Areas District, RA �� _ Magisterial District: Rivanno Mixed Use .Vdcant ResidentiolLond....- Woods �w �. Area = 10 1. 71 Ac 5tr-e(jrT'�- :_)_ xT xr- i 35' REAR SETBACK L11VE- X 4 ;. v: :. '.:: ..,. .::7. ?• •:•:::: • ::'` `...... mQ �« Mixed %.::.:: ' ...... ......... ' Y:.:.:..:. �:. ::::.., ' a M 5 3 DITCH 1 ............' u :' . .:.:.; r : k' .....,.A .......:... ..... '. . :Y.::y ......::�::::'' ...... ::. Conc. :.. ::::::::: Foundations Tx Pad (Typ)' .......... 0C= 51r6� 3 .:.'..:; _ 0 o r.::. I: Mixed --. W.aods 0 O :�:.:.Q �. ... 'iyk0 0 000 0 'r" 49 TONS }•...: (lard lTyp> %ow ..... s, i RIPRAP 4J5:trjlb fiU �- c� 6 3/ D DITCH w2A:'::}:.' 9 ' o . 0 0 6.00'-/ r; c I of Berrn _ 1_ El ��' .; -- - - - PLAN STORMWATER PROFILE ALIGNMENTS 1 -40' SCALE 0 40' 80' 520 510 1 > w 500 J 490 ri 0 LO 0 LO STORMWATER -TOP OF 2 3 TR SH & DEBRIS d w a. o 51 00 10 10 RACKS 4 N Io It EMERGE CY SPILLWAY 3 (IN FOR GROUND) ELEV. - 509.00 2 - PROPOSED 36 TONS FINISHED GRADE CLASS 1 IN RIPRAP \ SL _ j 24" VDOT STD INV. - ES-1 END SECTION 503.00 " 1 ST RMWATER �C<q 0 4F GROUND RISER 10Q jo6 TRUCTURE ��9 INV.- 496. 15 7 ONS e ENERGY 0' CLASS 1 DISSIPA RI RAP o� M oN r0 0) N _ N I- ,_ 00 tf) cv 00 ^ Lo O) ri rn 10.00 11.00, 12.00 DISTANCE (FEET) B"�PROFILE Lt 1 M 0 (do O Uj o O 520 500 495 Mi 0 Ln STORMWATER MANAGEMENT FACILITY HORIZONTAL SCALE:1"-40' VERTICAL SCALE:1"-4' 5 3 m0 M o 13 13 Ivi 520 510 w W w Z O 13 500 > 01-YEAR WATER SURFACE ELEVATION - 507.06 w O10-YEAR WATER SURFACE ELEVATION - 508.33 4 O 25-YEAR WATER SURFACE ELEVATION - 508.52 � 10 490 100-YEAR WATER SURFACE ELEVATION - 508.73 12.56 VERTICAL SCALE 0 4' 8' HORIZONTAL SCALE 0 40' 80' ' DITCH •1 VDOT E E Q w ST'D PG-2A TY N 9' Qw tnw cn W PROPOSE STORMWATER PANAGEMENT FACILITY FINISHED RADE ,. 2 ... -_- 3 49 TONS _ -��W ' CLASS 1 -.- - ,' RIPRAP � - - - - - - - - ---- ---- _ SEDIMENT BASIN GRADES. SEE EXISI ING GROUND _ - CONVERSION NOTES ON THIS SHEET. co w 00tf0) o w N0 to N M � rno rn O �^.- o 'n o� M N N N 66 6Op :1 � Ln , �� o6 Ln `n Lnn 20.00 21.00 SEDIMENT BASIN Wet Storage Dry Storage BAFFLE BARREL •o N c ` C.71 *C O C71 L C E.0 V C c 0_(D0. X N E C E O Z�N .O^-0 �a1v 0� w _.La..o N �O Va o O > ,> O � 0 ooE:3 •- 0 t 0 �'v 0o � w�O a1 C C1 _LC 0 OL_ 30 o _0 0 0 02 0) 0o oN aNC « '. ` O 0o ° W E a1 'm > v >� o oN `' ,� ° Ea J o 1 4.00 268 273 268 606 503 1 508 1 48" 1505.1 1 4" 1508.52 509 N/A 510 i 10FT i N/A N/A N/A 70FT 24" 503 1496.171 22►00 DISTANCE (FEET) 23.00 PROFILE DITCH #1 AND STORMWATER MANAGEMENT FACILITY HORIZONTAL SCALE: V-40' VERTICAL SCALE: V-4' 520 Z 510 Q w J W 500 Z 30.00 Typical Drawing Library Location Cell Nome B/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stand Foundation Cells (Spread) Foundation Cells for Other Typical Structures Information (Pier) (Spread) 24.00 6 3 6 3 °:10 13 13 ��T 13 13 M o DITCH Ill T � DITCH •28 M LO o� M M ■ , W, ¢W aW r-- W EXISTING ~ W to U' ~ J Ow N w GROUND�r _ _ W � � PROPOSE FINISHED GRADE (0 d 7 N N Q fl� CN W r n N r- �o 31.00 DISTANCE (FEET) D PROFILE 9 DITCHES #2A AND #2B HORIZONTAL SCALE:1"-40' VERTICAL SCALE, 1"-4' Steel Detail & Assembly 520 520 Z O > w J 500 w 495 LO N N 24.84 SEDIMENT BASIN CONVERSION SEQUENCE OF CONSTRUCTION 1. ONCE THE SITE HAS BEEN DEEMED AS STABILIZED BY THE COUNTY AND DEQ INSPECTORS, THE SEDIMENT BASIN SHALL BE CONVERTED TO A PERMANENT STORMWATER MANAGEMENT BASIN. 2. THE WET VOLUME OF THE SEDIMENT BASIN SHALL BE DEWATERED (PUMPED THROUGH AN APPROVED SEDIMENT REMOVAL DEVICE) AND SILT EXCAVATED. 3. UPON ESTABILISHING A STABLE SUB -GRADE, FILL THE BASIN TO THE FINAL GRADES ESTABLISHED IN THE CONSTRUCTION DRAWINGS AT THE LOWEST ORIFICE. THE BOTTOM GRADE OF THE PERMANENT BASIN SHALL BE SLOPED TO THE RISER DISCHARGE STRUCTURE A MINIMUM OF 11. 4. REMOVE THE TEMPORARY SEDIMENT DEWATERING DEVICE AND ESTABLISH THE FINAL ORIFICE OPENING. PLACE THE FINAL TRASH RACK IN ACCORDANCE WITH THE DRAWINGS. 5. PREPARE THE NEW GRADED BASIN BOTTOM FOR PERMANENT SEEDING AND MULCHING IN ACCORDANCE WITH THE VIRGINIA EROISION AND SEDIMENT CONTROL HANDBOOK. 6. NO EROSION AND SEDIMENT CONTROL MEASURES CAN BE REMOVED WITHOUT THE APPROVAL OF THE COUNTY AND DEQ ENVIRONMENTAL INSPECTOR FOR THIS PROJECT. 7. REMOVE ALL TEMPORARY ESC DEVICES AND STRUCTURES AS APPROPRIATE ONCE CONSTRUCTION IS COMPLETE AND UPON THE APPROVAL OF THE ESC INSPECTOR. VERTICAL SCALE HORIZONTAL SCALE 0 40' 80' 1-- w w w v VERTICAL SCALE 510 O 0 4' 8' Q HORIZONTAL SCALE > 1 0 40' 80' w 500 Geosyntec 1> N Consultants r 32.00 32.49 DOn11n1®n kol°"illil I 0 Ener�gya STORMWATER MANAGEMENT PLAN & PROFILES & GORDONSVILLE SUBSTATION EXPANSION ALBEMARLE COUNTY, VIRGINIA t-+ �� jaax Name Dote Project No. Sheet No. 16 039540 � Designed by: GEO 06/20/18 99-2523 d 'IC . Z (8 Approvals TER 06/20/18 Scole OF 2 �y o Approvals AS NOTED -NOINNk, B/M No. Revisions Cod File Nome 0000000a.dgn PLOTTED: sSStss$$*$SSYTIME W V) M w M M M a C M W °' o is ,'WZ �I.-w a a w . 0 1 2 3 4 5 7 8 9 10 11 12 PLAN VIEW TP +� F'"I 3 �( 2 =9 T TRIODE ROUND OR CIAy VERT 1 SQUARE 12" NA.S iIIlaOUGItNT EEYlALL� %" UTA R 6" LG.ADrESJVE UQ1 TS Y4lFLAf WA^HERS x1D SELF LOCACIG NUTS TYPICAL 8 PLACES, PLAN VIEW IT RASH RACK NOT SHOWN) TRASH RACK ,SEE SID. SVIM-DR, -SEE NOTE B METAL N PLATE A DEBRIS > jgRACK F 0 SWY-1 NOTES I COS( OF TRASH RACK 440 DEBRIS RACK ARE TO BE NCLUUED IN TIE: DID PRICE FCR THE 5TORWHATER UAJACEIAENt ORAR"r STRUCTURE. 2 STRUCTURE MAY BE PRECAST OR CAST IN PLACE SEE SKEET 2 OF 3 FOR DETAILS ON PRECAST STRUCtURE 3. ',VEEP HOLE'S SHALL NOT BE FROVICED 4. STEPS ARE TO BE PROVIDED YhEli FiFJfHT OF STRUCTURE IS 4'-0' OR Or EATER ABOVE INVERT OF OUTLET PIPE FOR STEP DETA4 S SERE STA,DARD ST-I 5. FOR DETAIL'S OH METAL PLATE. DEBRIS RACK AND TRASH RACK SEE STANDARD S'aM.DR 6 MARK hEIGHIT OF STRUCTURE, 11 BLACK, WITH 4" HICH NUMERAL! AND T• WIDE HGRIMNIAL STRIFES AT 1'JJTERVAALS FROM 2JVER' CF YIAI ER 'QUALITY ORIFICE TALL VISIBLE SIDES) 7. ThE PERNARIENT STQRMWATER MANAGEMENT CRANAGE STRUCTU 51AUDARD S'AM-I IAAY 1'E MOOTED WHERE THE STORMIYATER NWIACEMENT BAST) IS TO BE USED AS A TETAPORARY SEDINENI BASIN DUI TJG PROJECT CONSTRUCTION SEE STANDARD SWM-CR, SKEET IOF S, FOR TEMPCRAR( MODIF+CANON OE7ALS. A. THE 512€ OIF THE IVATER OUALITY ORIFICE SHALL BE SPECIFIED ON IHE PL)AIJS ADDITIONAL OPENINGS IN THE STORTAWATER 1 MAIAOEMEN'T ORA¢JAGE STRUCTURE TO BE PROVEED WHEN SFECIFIED ON THE PI AIil SEE NOTB 6 WATER OUAILITY ORFICE SEE NOTE 18 �6OTT W OF STORMWATER MATIAG(EMENT BASN ^f`�'•—'•----'—'•-'1'�'i lt!'JE Ri OF OUTLET PIPE. I- APPROXWATE 9UANTIEIES FRONT VIEW SIDE VIEW DEBRIS RACK NOT SHO'NIN CAST-u+)-ALA f CLASS A-3 CONCRETE TO BE USED MAXIMUM DEPTH IW TO BE 12'-8" SWM ORANAGE STRUCTURE PIPE SJZE 12" 16' t8" 24" 30" 36" 42• MINIMUM DEPTH H 5'-0" 5t-3%i 5'-Q," 6'-1" fi'-71/i' 7'-2" 7'-9Y,^ 1 U. YDS. CCNICRETE 2.665 2.773 2.879 3078 3.62! 3437 3598 111CREhtENT PER FOOT OF AVATIOtIAL DEPTH 'H" • O.46ICU YDS. SPECIF CANON `VDOT REFERENCE CAST IN PLACE STORMWATER MANAGEMENT DRAINAGE STRUCTURE ROAD ABRIDGE ROS 3DDATE REv151CN DATE SHEET EE1 ICF J VIRGUdA DEPARTMENT OF TRANSPQRTATDN 08110 11401 A a DETAIL VDOT STANDARD STORMWATER RISER STRUCTURE (NTS) Ddsipawn sctt�n--T------- SPreafict 'a+sY F+tLa� CFjCf :IT17A t 5 -.t0n _ _ A y` ...:0 I 1A Ono :Ldt : 3 trat(FxN w.9rT jj 1 1 d;s>s Al npnp G €t11u CS°UT Ew,tcrSI rn;u s°cti-.n E7.5 x la 16 to G1)0Ifldt TJFi3"o as TLxIUitS:j '�A111ii a� i U:stpailcn I I 11 _wF Plunpgl ry fl 'fop of qrai9 r€•r 1F I —, 1 1 �'x�'trogtaddtrA)sr &,,,aVA0 fac 9Iupw Rdp V091' no. d a (i ctx t&rtdr C�'� )tu. � oFox� c(aatr�°1 IIi)tyi HsdiCahrantted>)tao(tT I;rulra�aclh " I*tYO.C.AV-0"kpn I��.. S jh,s A 31of10141, r 8t s3�f 784i ' HENRICO (COUNTY BNVIRUNtdENTAL PROGRAM MANUTAL 9.01 -3 r4" ENERGY DISSIPATOR 10 (NTS) 1A %i•s M/4' BOLT 1.IE IAL PLATE ''. 5Df YE'."W OF BOLT AELBEU GJ TO PETAL PLATE SIDE VIEW DETAIL FOR DEBRIS RACK HOLDER --_ gstf.D7 E BOLT. I FK, NU1, L CD5T OF QER t RACK.;-QA_ PLATE. AID PRICE RACef POLDER TO BE FNCLUr_D LJ i.,E BID PRICE FDII ThE 5.VM C:tPoNAGE SiRUC IIJHC. --� 2 {lE�(±Ft6 HACK MAY BE it{{ffR.CAf ED FROM 'ICLof. '(� D IVUETER BARS CR I/" iRCK HIGH DENSITY VC}L YETHYLE='.E META CUtYONEN TS Cf OUVIS RACK MUST NOT BE GALVANIZED 3, CURS RACK 10 BE lit .ED AS 51,004 Off COUTRACTCR UAY SUBSTITUTE A CCYPART _5-E GCSCTJ AS "FNOVEO D" NK; CI.CU.EER. -` -`-- 4.11,E LOCATION OF ihE LEBRIS RACK HOLDER WAY BE ADJUSTED FOR VNUAiBLE CONDITIONS. 'JNaN HST OF-+ UOLI IS LOCATED CN II{ kE TAL PI ATE TM T/i' VA. QCLI LENGTH 15 TO Bc FRONT VIEW REDLCEU €/ LG h10 OIELBEO TO Ihf PLATE, T EBR.S RACK KOLCER AND ALL HAROAARE- S TO BE CtLV"LED ❑OOEI0 ❑El I ODO�C1C1C7 TOP VIEW 000000C AIL. ))t'' TOP TO DE V"GEO TO ALLOW AC TO WALITY CN3'ICC ❑OOOOO❑ ESS 1if;E ERIVDETA ABOVE) ATER r ❑ ❑❑❑ ❑ O TOP TO UE HN.CEQ TU "A" ArCE55 TU WATER QUALITY OR610E (SEE NOTE J) -T El O tJ ❑ !MA Y R5 O?RZCD 1 1 ❑ 0 ❑ 111111 S E Ito] E 2 4.1 ❑tCJTL� ❑i�❑ ❑11 o L.71... 0 L' ❑ ❑ ❑ L� Y®'OUAFE OR 23' UI SHOLES T❑� ❑El❑l._S❑ LSSEEF_NOTE 21 r ❑❑❑❑CI❑ FRONT VIEW HIGH DENSITY POLYETHYLENE SIDE VIEW METAL DETAIL FOR DEBRIS RACK VCR WATER XA01V OR✓YK;E) SPECIFICATION REFENCE RE STORMWATER MANAGEMENT (SWM) DETAILS ��ADOT DEBRIS RACK. METAL PLATE, WATER QUALITY ORIFICE, CONCRETE CRADLE ROAD asDCE srAnoARDs JO2 (FOR SWM DRAINAGE STRUCTURES, SWM RISER PIPES AND SWM DAMS) REVISION DATE SrzET 2 OF 5 VLiGHtA DEPiRTNENT Ci TRANSP03TATION 11T.05 2 DETAIL 10 VDOT STANDARD DEBRIS RACK (NTS) 914IJ-DR �..Trl/1`Ilhail._ ��r,� 1's xh •ES'VE DOLTS WAFLAT WASJ�ERS AND SELF LCC.UNG NA"S r YPICAL d PLACES•ECUALL( SPACED ON NI ''E' OIA, B.C. I 9-1 TVP. I'll r O:A S (EEL BAN STEEL/t PLATE NOTE, l A )UJGED, LCCKALR-E ACCESS DOOR At1TH A W'fJUW 2. 2'CLEM OPtka4. 5JIVILL BE PRDVDED ON ALL IRAS)I HACKS. HIGH DENSITY POLYETHYLENE METAL (STEEL) At�PxiDx. APPROX. 'W!, ILQS.1 188 OS \SJD0 STORMWATER MANAGEMENT DETAILS TRASH RACK "36fAlto" REFERENCE ROAM1D Nm BRIDGE STAJIDARDA FOR SWM DRAINAGE STRUCTURES F2iEETT 5 OF 5 kEViSAH DATE ]02 ttu.001 1 V57IG;LA DEPARTMENT CF iRAISPOATATDN 3 DETAIL 10 VDOT STANDARD TRASH RACK (NTS) Geosyntec 00-1 Dominion --rM? la�� C011SLtlt111tS pn--W Enerlgyo ° STORMWATER MANAGEMENT DETAILS xo�cGORDONSVILLE SUBSTATION EXPANSION " w ALBEMARLE COUNTY, VIRGINIA Q o m X r r, 0 0 r o a m 4 K, LaCt,A1R yj,�, ,�, L1C No. 0395� .,� t o. �� Ci `�T�ZQN i N M M M c M w 0' 6 o O Designed by Nome Dote Project No. Sheet No. 1 � OF Li' � GEO 06/20/18 99-2523 Approvols TER 06/20/18 Scole o z Approvals 1'=40'64 Revisions B/M No. Revisions sUSERNAMES Typical Drawing Information Library Location Cell Name B/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stand Foundation Cells (Spread) Foundation Cells for Other Typical Structures Steel Detail & Assembly Cod File Nome 0000000a.dgn Drowing No. 0000-000 W z n N .0 (L (Pier) (Spread) p PLOTTED sssssssss:sSVT1ME I I I I I I I I I I I I I I I I I I I I I I I I Jill III III III 1 I 1 1- 1- 0 1 2 3 4 5 � 7 8 9 10 11 12 I 1 j V'EPCO 100' Rj y/ I — DB 783 Pg 758 eA' (Pnrr.Pl F.S) 0 i I ... 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I l i i `. ` ( ' '� Woods .�i r:,::: :(:.v:.1:. . j _ 0 0 0 0 0 0 : f.:.: j t �:'. x a'" '; 1 ::'• / ,1 - I '.1'. I � ) d i. �'g .t�3�3 %, , .i 4 . q4. , . a .1't `�` 5 1, t_,� I. �.-� 1i�..,,1.`,' t y v ij 3 { k' ,I 1';', 5 S","-. {J y " 1: BASELINE ' f :. '\"�" : $'..'.:, fi , �....',......Y,.„ o O O i(:.' "i .It 4—'..e. __ . i,'A •5y>,1.„_;L` '•."' ,,. O•,ow Ground Mat : :(•: Ifit i :\ z , ."' ;k\,, ',,' '; '", N 9269, CO ;: j ; , a $ � ; ; i i ' ; ' j' t ,' � ; �'a✓' ... cp �, � - e _0 .:. .. "�,; il .,.... I.I,:'1V.1.._:.'— ':.%..:..._'.*1,:._._:....'.1?:.A/.VfI..1..1:1.....:..-%-,%:%'.1:..-.%,,".... *.."-X_.f>' �� O o . :.... I. i 'i1F 2iJ) ." co -- ... I • ' y r ' j of ' ' 1� a a '° f�. .:.r— r cn N I ASELINE 1. _L; ; 11 i r f ° 3_ - ri 6 �+ i . , , . . - ,ram tr _ :1- r+ - - h(V�-.k N t ) 1 V EPCO 100' RI W DB .517 Pg 5 72 (Parcel 113) I ' I �' ____ - � -_ � .r- �_t . _.... O ,.. b Wooden _ o c,} 'C u \ w VP PA 7 v.... '; I cs <C 1 1 / VP'. Q� �, �o . b P• l'. i os t .....-. _. b ",. r, , . 1- b ::': ..,,.:: :fi. X c h. b C i--=� i� - - b b _.1 Vl . _ . . r. : _ .. `v .. .. - 9. ♦ ' ' ''Ir b ,.... -. _ _. _..-._a ,i ` - "3 o (n =� �t "r a ^� ;' ::':. - / y ;; �j ;firY F'`i =v` .. .Nam ` b N N f. U 3 I;., in \ v...•. , _ �IGORDONI . I Y'�% \ o ' cn <t `� �, _. �° o@ :: •.1. C� ilrlixecY� '. \I.I 9-- r j r` M�� oKc') I �--- `\ '�.% �.� �� --Woodsy `��m ° �a 1. A cn o U c!) `.: yy� C J N o. a o b : - b I- . I : _ • - . " , ` �- t ..� ads . n� "aC to x L n� _,2 o, �' Rod _� p� cL I z co N � / 0_ _ \ _ _ _ - Access Rood _ �� 11 Q o .-.1 z, .. - x }v - ) > � ' _ ... ` ..' • = � - , 1.,.,, Mix �\d IcC c N _ �. .....- ,. e ' ( �. a x " ,> . Wood �} "4.as s a, b o Mixed.. .... . - . . I �` x •.� o VIRCI IA" E�L-ECTRIC ,� \ •' . e .- a .7 V,'Jo o d s .�,., .� . �,' — ___ ' 4- �, � � _•,,r..• - R—CO ,-P411 Y,--.. -.,\ �\ '•,\'•, I 785' to Northerly R/W Line of PAedium' Brushes o Gordonsville Su6siaipn .''.'°o ��\ . _._ - _ -sue Gordonsville Road �a _- i z \ 1 '- - . & �' / . - rox Mvp #3'7.-11A a ` ) -,1 `. ` \ �- ', —Cut'-Over b) j Deed Book--.517, Page-.434 l `� �, Monument ,-- � ' " 1 r - - ,� j Found n '' _1�-� 5�C_i°� .�- i �o-ned Rural Areas 'Distriet;'R- A '�"'.� — �� TPED / MagisferialDistrict f?iv.Qnna �� :"M,l��ote , . Mail Box'• P , � _ 510 /< Use coon i �Re.s_ ides tiol L and �-- , . - • j l !- `; .. _----x ✓ - _ - - x - _ ---.-7X Area 9.04. Ac»- - - J :r XX . c_,_ -- ,� - ¢ _N' '� T 7.74'0Ut.e 6-- ) - "- - . '... I. .- LI ,,..,. - �.. , , , -. .'. II" . '1' 1� 1, . , I I z, I� -, ,.. 1�1-1 ".F, ,,�,'.�?A.�C-�K�R ,'_ _.� �- -- N42° 06_301 s -- '1%R INble Width R1 _- .� W _-- lL Vo'rio ___- X---� _, _ � 'O L o Monument d _- )(_ t"X"-�_- ---`--.............. t m O Faund / _ x _ _ X:.; - - - - -- 0 _ - m o L 515 x _---- x -- - _ _ _ - 0 a. _ �-'-X -: - - ______ _ Revisions _ - --`- Typical Drawing Library Location Cell Name B/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stand Foundation Cells (Spread) Foundation Cells for Other Typical Structures Steel Dete)1 & Assembly sUSERNAMEs I n f or ma ti on (Pier) (Spread) IIj I # ....: I i j LL./—___1 . ld $ '� t___-1_rr _, I; I � 1 I°d i1.ICI lIil r` ,I. rI . '�`�' �, \ , ,-' / � �. Ligh t ) ' '' " ' \—\\ Brush D I% < _ __ aY PROPOSED PLANT LEGEND SYMBOL QUANTITY BOTANICAL/COMMON NAME SIZE AT INSTALLATION It 13 PICEA ABIES. NORWAY SPRUCE 6 - 10 FT. HT. 0 12 RA F RA A BELLA G NDI LO DWARF BURFORD HOLLY 2 - 3 FT, HT. LANDSCAPE NOTES: 1. ALL PLANTING TO BE DONE IN ACCORDANCE WITH DOMINION'S LANDSCAPE PLANTING SPECIFICATIONS, 2011. 2. ACTUAL PLANT PLACEMENT MAY VARY DUE TO FIELD CONDITIONS AT THE TIME OF PLANTING. 3. DOMINION VIRGINIA POWER WILL PROVIDE ONGOING LANDSCAPE MAINTENANCE FOR THIS FACILITY, 4. REFER TO SHEET 5 FOR EXISTING CONDITIONS LEGEND. 5. REFER TO SHEETS 7 AND 8 FOR PROPOSED CONDITIONS. 6. PROPOSED LANDSCAPING SHOWN ON THIS PLAN IS SUBJECT TO THE REQUIREMENTS OF CU-149 DATED 22 MARCH 1972. ORIGINIAL CU-149 STATED A REQUIREMENT OF TWO STAGGERED ROWS OF WHITE PINES. DUE TO DOMINION ENERGY SAFETY REQUIREMENTS, DWARF BURFORD HOLLIES ARE PROPOSED IN THE AREA UNDERNEATH THE EXISTING TRANSMISSION RIGHT- OF-WAY. NORWAY SPRUCE ARE PROPOSED IN LIEU OF WHITE PINES FOR THE REMAINDER OF THE PROPOSED LANDSCAPING. 7. MINIMUM LANDSCAPING AND SCREENING REQUIREMENTS PER ALBEMARLE COUNTY ZONING ORDINANCE 32.7.9.4.d ARE SATISFIED TO THE EXTENT THAT THEY ARE APPLICABLE AND FEASIBLE IN THIS PARTICULAR CONTEXT, DUE TO SITE CONSTRAINTS AND LIMITED VISIBILITY FROM ADJOINING PROPERTIES. Geosyntec " Consuitalits Dominion Energy, -N? tOIA 12.a18 LANDSCAPE PLAN + GORDONSVILLE SUBSTATION EXPANSION _,F:S,,:,r.. �}�'�' ALBEMARLE COUNTY, VIRGINIA '0 �` a ,; � X �/4 x ;, � ,..,1 ', � 'd __'_ �k3'St, Nome Dote .w :. 4 ue� ;,!Q- � 95410 Designed by: GEO 09/21/18 ,& < ,�, �. Approvols TER 09/21/18 SCALE °P `�� . zI•� , Idn * Approvols `x= z B/M No. 0 40' 80'z1,��)» 11 Cod File Nome 0000000a.dgn PLOTTED: $$$$$$ssssaSYTIME w M v}) M M M M " 0 C."w o Project No. Sheet No. 11 OF 20 1 99-2523 Score 1'=40' Revisions �°' j �Cr 'D w Drowing No. n a .A" I 1 2 3 4 5 7 8 9 10 11 12 LANDSCAPE PLANTING FOR TREES, SHRUBS AND GROUNDCOVER MATERIALS PLANT MATERIALS 1. PLANT LIST - A LIST OF PLANTS IS SHOWN ON THE PLANTING PLAN AND/OR THE REQUEST FOR BID. IN THE EVENT THAT QUANTITY DISCREPANCIES OR MATERIAL OMISSIONS OCCUR ON THE PLAN, THE PURCHASE ORDER REQUEST SHALL GOVERN. 2. QUALITY AND SIZE - PLANTS SHALL BE WELL GROWN AND HAVE A HABIT OF GROWTH THAT IS NORMAL FOR THE SPECIES AND SHALL BE SOUND, WELL FORMED, HEALTHY, VIGOROUS, AND FREE FROM INSECT PESTS, PLANT DISEASES, AND INJURIES. ALL PLANTS SHALL BE EQUAL TO OR EXCEED THE MEASUREMENTS SPECIFIED IN THE PLANT LIST, WHICH ARE MI NI MIUM ACCEPTABLE SIZES. THEY SHALL BE MEASURED BEFORE PRUNING, WITH BRANCHES IN NORMAL POSITION. ANY NECESSARY PRUNING SHALL BE DONE AT THE TIME OF PLANTING. REQUIREMENTS FOR THE MEASUREMENTS, BRANCHING, GRADING, QUALITY, BALLING, AND IBURLAPPI NG OF PLANTS IN THE PLANT LIST GENERALLY FOLLOW THE CODE OF STANDARDS CURRENTLY RECOMMENDED BY THE AMERI CAN ASSOCIATION OF NURSERYMEN, INC. IN THE AMERI CAN STANDARD FOR NURSERY STOCK. 3. SUBSTITUTIONS - CONTRACTOR SHOULD BE CERTAIN HE CAN FURNISH ALL PLANTS AS REQUIRED (BEFORE HE SUBMITS A PROPOSAL, SO THERE WILL BE NO DELAY IN COMPLETING THE PROJECT. MATERIAL FOR STAKING 1. STAKES FOR SUPPORTING TREES SHALL BE EITHER TWO TYPES: 2' X 2' X 6' SOUND WOOD OR 2' X 2' X 18' STAKE. 2. BLACK PLASTIC ADJ-A- TYE, I' WIDE, OR SIMILAR MATERIAL OF OTHER MANUFACTURE. MATERI ALS FOR PLANTI NO 1. FERTILIZER - A SLOW RELEASE GRANULAR FERTILIZER SHOULD BE INCORPORATED INTO THE BACKFI LL SOIL TO PROVIDE NITROGEN, PHOSPHORUS, AND POTASSIUM. USE NO MORE THAN ONE POUND ACTUAL NITROGEN PER 1,000 SO. FT. OF PLANTING HOLE SURFACE. 2. MULCH - ALL PLANT MATERIAL WILL BE MULCHED WITH PINE BARK, SHREDDED HARDWOOD, OR WELL ROTTED WOOD CHIPS AS DIRECTED. THE MULCH SHALL COVER THE ENTIRE AREA OF THE PLANTING PIT. BED OR SAUCER AROUND EACH PLANT. SHRUB PLANTING DETAIL 3" Mulch EVERGREEN TREE PLANTING DETAIL -STAKING SPECIMEN TREE PLANTING DETAIL Cut away all balling Remove top of wire �4.. ev w l Widen and score hole wall U Remove container and cut circling roots if container - grown, or as much burlap as possible if field -grown PREPARATION TIME OF PLANTING 2"-3" Mulch kept away from trunk l,A Soil well to contain water Backfill soil Leave solid soil pedestal-dc) not dig deeper than ball ' 1. EVERGREEN MATERIAL: PLANT EVERGREEN MATERIALS BETWEEN SEPTEMBER 1 AND DECEMBER 1 OR IN SPRING BEFORE NEW GROWTH , ::., y Soil -•�� Well BEGINS. IF FORESTRY COORDINATOR REOUI RES PLANTING AT OTHER Soil Pedestal] TIMES, PLANTS SHALL BE SPRAYED WITH ANTI -DESICCANT THE DIGGING OPERATIONS. PRIOR TO 1 'Itt - ill ..a 14 .,.. Remove container and cart circlinr-illx-s�11t g't' `r it W 2. DECIDUOUS MATERIAL: PLANT DECIDUOUS MATERIALS IN A roots if container -grown, or as g much burlap as possible if field '-�".--��1'-�'-:%'� -' i �� :11t'-' -'•��`� i��`-'��` •-� '�= ��ti1i DORMANT CONDITION. I F DECIDUOUS TREES ARE PLANTED THEY SHALL BE SPRAYED WITH AN ANTI -DESICCANT PRIOR IN -LEAF, TO THE grown DIGGING OPERATIONS. BALLED & BURLAPPED/ CONTAINER PLANTS PLANTING SHALL BE PERFORMED ONLY BY EXPERIENCED WORKMEN FAMILIAR WITH PLANTING PROCEDURES UNDER THE SUPERVI SI ON OF A OUALI FI ED SUPERVI SOR. LOCATE PLANTS AS INDICATED ON DRAWINGS. IF OBSTRUCTIONS ARE ENCOUNTERED THAT ARE NOT SHOWN ON THE DRAWINGS, DO NOT PROCEED WITH PLANTING OPERATIONS UNTIL ALTERNATE PLANT LOCATIONS HAVE BEEN SELECTED BY THE FORESTRY COORDINATOR OR DESIGNEE. EXCAVATE CIRCULAR PLANT PITS WITH VERTICAL SIDES, EXCEPT FOR PLANTS, SPECIFICALLY MARKED TO BE PLANTED IN BEDS. PROVIDE SHRUB PITS AT LEAST 12 INCHES GREATER THAN THE DIAMETER OF THE ROOT SYSTEM AND 24 INCHES GREATER FOR TREES. DEPTH OF PIT SHALL ACCOMMODATE THE ROOT SYSTEM. LEAVE SOLID m m i o E SOI L PEDESTAL I N THE BOTTOM OF THE PI T. DO NOT DI G a V Q. z m DEEPER THAN THE BALL DEPTH. v 4j O .iC Or-) N m n 0 d Z Revisions sUSERNAMEs Typical Drawing Information Library Location Cell Name B/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stand Foundation Cells (Spread) Foundation Cells for Other Typical Structures (Pier) I (Spread) PROVIDE PRE -MIXED GROUND COVER BED PLANTING MIXTURE FOR USE AROUND THE BALLS AND ROOTS OF THE PLANTS CONSISTING OF FIVE PARTS EXISTING SOIL TO ONE PART DEHYDRATED COW MANURE. PROVIDE PRE -MIXED GROUND COVER BED PLANTING MIXTURE CONSISTING OF THREE PARTS EXISTING SOIL TO ONE PART DEHYDRATED COW MANURE. TILL THE GROUND COVER BEDS. INSTALLATION A. SET PLANT MATERIAL IN THE PLANTING PIT TO PROPER GRADE AND ALIGNMENT. IF FABRIC IN -GROUND CONTAINER MATERIAL IS USED, REMOVE THE FABRIC BAG FIRST. SET PLANTS UPRII GHT, PLUMB AND FACED TO GIVE THE BEST APPEARANCE OR RELATIONSHIPS TO EACH OTHER OR ADJACENT STRUCTURE. SET PLANT MATERIAL NO LOWER THAN THE FINISH GRADE OR TWO TO THREE INCHES ABOVE FINISHED GRADE. NO FILLING WILL BE PERMITTED AROUND 1fRUNKS OR STEMS. BACKFI LL THE PIT WITH PLANTING MIXTURE. 00 NOT USE FROZEN MIXTURES FOR BACKFI LLI NG. FORM A RING OF SOIL AROUND THE EDGE OF EACH PLANTING PIT TO RETAIN WATER. B. AFTER PLANTS ARE SET, MUDDLE PLANTING SOIL MIXTURE AROUND BASES OF BALLS AND FILL ALL VOIDS. 1. REMOVE ALL BURLAP, ROPES AND WIRES FORM THE TOP 1/3 OF ROOT BALL. C. SPACE GROUND COVER PLANTS IN ACCORDANCE WITH INDICATED DIMENSIONS. D. MULCHING: 1. MULCH TREE AND SHRUB PLANTING PITS AND SHRUB BEDS WITH REQUIRED MULCHING MATERIAL TWO TO THREE INCHES DEEP IMMEDIATELY AFTER PLANTING. AFTER WATERING, RAKE MULCH TO PROVI DE A UNI FORM FI NI SHED SURFACE. 2. MULCH GROUND COVER BEDS WITH MULCH TWO INCHES DEEP BEFORE PLANTING. E. STAKI NO AND GUYI NO STAKE TREES ONLY IF ONE OR MORE OF THE FOLLOWING; CONOI TI DNS ARE PRESENT: LARGE CROWNS, SLOPED AREAS. Wl NDY AREAS OR TREE SPECIES REOUI RES INITIAL SUPPORT. IN THE EVENT THAT QUESTIONS ARISE CONCERNING THE ABOVE, THE FORESTRY COORDINATOR WILL MAKE THE FINAL DETERMINATION. 1. STAKE/GUY ALL REQUIRED TREES IMMEDIATELY AFTER PLANTING OR WITHIN 48 HOURS. 2. STAKING DETAILS ARE SHOWN ON ATTACHMENT A. F. PRUNI NO 1. UNLESS OTHERWISE DIRECTED, PRUNING WILL BE RESTRICTED TO REMOVING BROKEN, DAMAGED, AND ASYMMETRICAL GROWTH OF NEW WOOD. 2. UNLESS OTHERWISE DIRECTED, PRUNE EVERGREENS ONLY TO REMOVE BROKEN OR DAMAGED BRANCHES. G. EXISTING PLANT RELOCATION 1. TRANSPLANT TREES AND SHRUBS DESIGNATED FOR RELOCATION TO LOCATIONS SHOWN ON THE DRAWINGS. PRUNE, DIG. BALL AND BURLAP, MOVE AND PLANT IN ACCORDANCE WITH SPECIFIED TREE PLANTING REOUI REMENTS. 2. PRUNE, DIG, BALL AND BURLAP, AND MOVE DESIGNATED TREES FOR RELOCATION TO THE DESIGNATED PLANT STORAGE AREA FOR HEELING -IN OF MATERIAL UNTIL FINAL PLANTING AREAS AFRE PREPARED, IF REQUIRED. A. MAINTAIN PLANTS IN STORAGE AREAS BY BRACING PLANTS IN VERTICAL POSITION AND SETTING BALLS IN AN ENCLOSED BERM OF TOPSOIL OR BARK. WATER AS REOUI RED TO MAI NTAI N ADEQUATE ROOT MOISTURE. B. RE -BURLAP PLANT BALLS IF REQUIRED BEFORE FINAL TRANSPLANTING OPERATIONS. C. MOVE TO FI NAL LOCATI DNS SHOWN ON THE DRAWI NOS AND PLANT IN ACCORDANCE WITH SPECIFIED TREE PLANTING REQUIREMENTS. 3. TRANSPLANTS ARE NOT UNDER WARRANTY. MAINTENANCE A. MAINTENANCE OF INSTALLED AND ACCEPTED PLANTINGS WILL BE PERFORMED BY THE OWNER. B. CONTRACTOR'S MAINTENANCE SHALL INCLUDE PRUNING, CULTIVATING, WEEDING, WATERING, AND APPLICATION OF APPROPRIATE INSECTICIDES AND FUNGICIDES NECESSARY TO MAINTAIN PLANTS FREE OF INSECTS AND DISEASE UNTIL ACCCEPTANCE. Steel Detail & Assembly 1. RE -SET SETTLED PLANTS TO PROPER GRADE AND POSITION. RESTORE PLANTING SAUCER AND ADJACENT MATERIAL AND REMOVE DEAD MATERIAL. 2. TIGHTEN AND REPAIR GUY WIRES AND STAKES AS REQUIRED. 3. CORRECT DEFECTIVE WORK AS SOON AS POSSIBLE AFTER DEFICIENCIES BECOME APPARENT AND WEATHER AND SEASON PERMIT. 4. WATER TREES, PLANTS, AND GROUND COVER BEDS. CLEANING PERFORM CLEANING DURING INSTALLATION AND UPON COMPLETION OF THE WORK. REMOVE FROM SITE ALL EXCESS MATERIALS, SOIL, DEBRIS, AND EQUIPMENT. REPAIR DAMAGE RESULTING FROM PLANTING OPERATIONS. ACCEPTANCE A. PLANTED AREAS WILL BE INSPECTED AT COMPLETION OF INSTALLATION AND ACCEPTED SUBJECT TO COMPLIANCE WITH SPECIFIED MATERIALS AND INSTALLATION REQUIREMENTS. B. INSPECTION TO DETERMINE ACCEPTANCE OF PLANTED AREAS WILL BE MADE BY THE OWNER'S REPRESENTATIVE, UPON CONTRACTOR'S REQUEST. PROVIDE NOTIFICATION BEFORE REQUESTED INSPECTION DATE. 1. PLANTED AREAS WILL BE ACCEPTED, PROVIDED ALL REQUIREMENTS HAVE BEEN MET AND PLANT MATERIALS ARE ALIVE AND IN A HEALTHY, VIGOROUS CONDITION. C. SECTIONS OF THE WORK MAY BE ACCEPTED WHEN COMPLETE UPON AGREEMENT OF THE OWNER'S REPRESENTATIVE AND THE CONTRACTOR. D. UPON ACCEPTANCE, THE OWNER WILL ASSUME PLANT MAINTENANCE. WARRANTY A. WARRANT PLANT MATERI AL TO REMAI N ALI VE AND BE I N HEALTHY, VIGOROUS CONDITION FOR A PERIOD OF ONE YEAR AFTER COMPLETION, PROVIDED PLANTS ARE GIVEN PROPER CARE DURING THIS PERIOD. 1. INSPECTION OF PLANTS WILL BE MADE BY THE FORESTRY COORDINATOR DESIGNEE AT COMPLETION OF PLANTING. B. REPLACE ONCE, IN ACCORDANCE WITH THE DRAWINGS AND SPECI FI CATI DNS, ALL PLANTS THAT ARE DEAD OR, AS DETERMI NED BY THE FORESTRY COORDINATOR'S INSPECTION, ARE IN A SEVERELY UNHEALTHY CONDITION. REPLACEMENTS TO BE INSTALLED AT NEXT BEST PLANTING SEASON. C. WARRANTY SHALL NOT INCLUDE DAMAGE OR LOSS OF TREES, PLANTS OR GROUND COVERS CAUSED BY FIRES, FLOODS, DROUGHT, FREEZING RAINS, LIGHTNING STORMS, OR WINDS OVER 75 MILES PER HOUR, WINTER KILL CAUSED BY EXTREME COLD AND SEVERE WINTER CONDITIONS NOT TYPICAL OF PLANTING AREAS: ACTS OF VANDALISM OR NEGLIGENCE ON THE PART OF THE OWNER. ANY REPLACEMENT ATTRIBUTED TO THIS MUST BE AN ADDITION TO THE CONTRACT AMOUNT. D. REMOVE AND IMMEDIATELY REPLACE ALL PLANTS, AS DETERMINED BY THE FORESTRY COORDINATOR, TO BE UNSATISFACTORY DURING THE INITIAL PLANTING INSTALLATION. PROJECT CONDITIONS A. WORK NOTIFICATION: NOTIFY FORESTRY COORDINATOR AT LEAST FIVE DAYS PRIOR TO INSTALLATION OF PLANT MATERIAL. B. PROTECT EXISTING UTILITIES, PAVING AND OTHER FACILITIES FROM DAMAGE CAUSED BY LANDSCAPING OPERATIONS. CALL MISS UTILITY TO MARK UNDERGROUND UTILITIES A MINIMUM OF 48 HOURS BEFORE DI GGI NO. Geosyntec consultants Dominion r;eW Ener,gY,, �Vpr kojgj l$ "## LANDSCAPE SPECIFICATIONS GORDONSVILLE SUBSTATION EXPANSION AF ALBEMARLE COUNTY, VIRGINIA t � LUCLAI, KyL i cn Nome Date Project No. Sheet No. Designed by: GEO 06/20/18 99-2523 No. 039540 'k 16 F 12 O20 M N Approvals TER 06/20/18 Scale Z�StSTOOApprovals NTSNN11 ~ B/M No. Revisions C N Wgg Cod File Nome $$$$$$$$$$$SYTIME Drawing No. �a Q �wz "D�- w PLOTTED: s:sa=ssa::$SYT1ME 0000-000 0 ° D 0 1 2 3 4 5 ' 7 8 8 10 11 12 ca i a4C 0. Z Co O -5C N m C, z° U Revisions :USERNAMES .Q ao h 450 /-� 3 STRANDS OF BARBED WIRE I f� F F SUBSTATION 4.0' MIN.- F 10.0' MAX. 4" THICK NO. 57 SITE STONE F GRADE-\ F T NOTES: 1. SUBSTATION SECURITY FENCE SHALL MEET THE REQUIREMENTS OF DOMINION'S SECURITY FENCE SPECIFICATIONS. 2. LANDING OUTSIDE OF FENCE SHALL BE 10-FEET TYPICALLY EXCEPT WHERE LIMITED BY PROPERTY SPACE ALONG THE NORTHERN SIDE. � DETAIL �3SECURITY FENCE (NTS) 2016 ROADA, BRIDGE STANDARDS TYPICAL iNsrALLA'rim AT END CF =IPE EC-3 '4ct.'ROOUr7 VAr DE STAKING DETAIL ' SIOuE AT SrA . S70VJiT LET I I Y Ov 1 6£YACF11 EFtI ROLLS SrARE5 04 ;,m 3 Y O.C. 1 1 ICiCCA ;LOT 2Y04 ` {< TRANSVERSE 13 W 11111, yr# IV CLOSED CHECK SLo"r 4 s+E!t`E C31ECx 'SLOT TO uE CF.STRLCIE3+ W /CCOaDMEE AITH ---�-•_4_ f{. �S �s r ..--+P•- �` M4 Fd EIFAtT+.' NIT LATIOU=_hOATtC++ - 7T• - ••T fi:i P�F7'ENxEU R.STALLAR0IH. 'T' TRANSVERSE f �c OPEN CHECK SLOT y DITCH " NOTES r-ram 1. 5TMEf Sli7Lt J HOOD CR VErf A P[ C©NL£hC r FR A.0 SW'LL Ce A Su4wlj E[ I, 9 E3 aY the OANIX CTVR_ 4Jiyt Y CF r7 W LEN 1H N 57 Fur 50L5 M lA1 ME, A MP+M,M OF %' N LEN't" SWLL, uE uSEO. 2. ALL EC-3 MAIMALS ARE 'r0 DE t`4 ACCOROA.Ce 69" rite APPROVED VRC'CLCT9 LIST. 3 EC-3 uATEVQ3 WtlE NSC LEO TO LES sHO:.LCER SRE kWIT OR ErIU,O CHtnx THE: EVGOC61. 1UF4Ll'GSTH 5� OF THE fiNCH '}DLL E6 Ih.,IALLED TO rRE SME P•s; -e -. ELEVAR9'e9. ��„i; �'� ;$•"�` %- t. 1i yY.,"F.£ T1Vlf 3 LUES OF MATEtLI S'E AECLIk£8 VITtILLEI TO TN£ "kfi THE "RCH,. VATEcI1L S: V ',. G£ VST7LLE0 PFiv'E'NY_l.!AZ rO SSE CENT01 LhE CV' IM C1104, STA2M4 AT Tk£ L'0'AEST IELEVATCN ! GF The DITCH UPSTREAIJ AND Do, isrREANI TERMINAL 5 T R SOtt42 E5 OF 3 �PRO.£D VArEktn9 !Ce v5OT5 A:'PRO'-iEO %+XC,.Cr9 LIST FCR SITU EC-3. A CCPv F lip Oa,SWL 5EILED AD M,%EO ORAAIAG 15 ON FEE r: THE CENITI& CFfr;E. sf urTCAW4 I 'lVao-r HEF£DEfCE ROLLED EROSION CONTROL PRODUCT 800CE S SOIL STABILIZATiON MAT RRevT1 Os 7fa (PEI 3?MA.NANT CITCH INSrALLATI(h4 7 aEvISK.h DAAA`4A TE sE£r : of s 642 vktrdA r,Fy+NiVEn7 OY r+iN,07!'6SVORTsfiCw !U.W O U; ROAD 5 BRIDGE STANDARDS 6 DETAIL 13 VDOT STD EC-3 DITCH LINING (NTS) Typical Or-owingl Library Location Information 4 IN. THICK VDOT F NO.57 COARSE AGGREGATE SITE STONE 7 FT 7 FT PROPOSED GRADE EQUIPMENT CCESS ROAD c•• c c v . a' a •. v 1FT MIN. VDOT NO. 21A COMPACTED BASE COURSE (41N LIFTS) 540 53C 52C 51C 50C 49C CC O 2 DETAIL 13 EQUIPMENT ACCESS ROAD (NTS) DITCH TABLE DITCH SIDE SLOPE SIDE SLOPE W D LINING ID A B DITCH •1 2 2 0' 1.0' MIN. PG-2A DITCH o2A/8I 2 2 0' 1.0' MIN. EC-3 DITCH •3 3 3 3' 1.0' MIN. 18" THICK CLASS 1 RIPRAP SOIL DITCH •4 1.5 1.5 4' 1.0'IVIAXI STABILIZATION BLANKET A W B 3 DETAIL �3DITCH GEOMETRY & LINING (NTS)) END -SECTION 12" 60" PIPE K8 END 01 01.JTLET END-SECT:CNS `5 xoi vz CN Air END•SECTICH x\\ x + - - - - IX?rCRETE B 4C00 ET LTE D BE 110,1114 PLAN ~ I CIA`/ETER BNt ,x 51LL < i � PAY -IJILL--------7 ice---- SECTION X-X l END VIEW END SECTION DIMENSIONS FYI. DIAMETER A B C D E 4" 2.,0" 2'-0.' A.". ^ 7_01 IS" 6' 7'•3" T•7" 4-10'. 2'-6" 21" T•ir 2'-Y' 5'•0" 31-6" 24' 3'4" 21-6" 6'-1' -t'-0" 77• tU r" 41-0" 74-t" W4. 4'-6" .LS" Y-Y a'•RY/a" 2'•9/' 7.•{y,• 5.-g.• 55" 2'-'0." 8'-1." 61.0" 42's'•1. 2'-ir' 8'-2" 6'-6" 481, •O" 8'-0" 2'-2" 8'-2" T-O" At. 2i Err' r-+r' S..D. 3'-J'• 6'-x a-O^ ALTERNATE END -SECTION 12" 60" PIPE ES-1 WA E1.O ON CVTLET EN0-SECTIONS C 51"O0- VIVO ON Bt.Ef eN0'SECRON x\ {1xL - 1 1 - .. _ J CONCREi!ES ToGIBd4 _ I---------- . L_ _ _ PLAN ` C D .rJklER Ox. LS1fEt F-- FOC AEd6'CRCEMFl1f- f - t. 0 -.y E - PAY L=E SECTION x-X END VIEW END SECTION DIMENSIONS KRE OIAVETER A B C 0 E �' 4' - r-0- a'-fT 6'•Y 2'•0" 21' 7' 2'-Ir Y-2" 5'-Y' 10•61' 24" t0" y,_7„ 2., 3" 6,3: 4,-0.. JO" Y.U" 4'.6" r•75•.0" 33" r- 4'•R; ,• 3'- 36" 1'-S" 5'-S" 2' ,0 r" 0'-t 6'-V 42'• r-9' S'-s- 2--t1- N'-2" 6'-6- AN" r-O' 5'-O' �'_�,• 2'-IV 8',41. T', 6.. 5'-0"8'-0- it QF PIPE -.-'-"" PAY L31;E - S IF - ---.._,-„ � NOTES: '•`".ti,� S+IPE LENOITHS 9,06N ON PLANS ALE EASED 08 .1,0-SECTIOh OE5HCN SWAN ' Oro USE Ttr°ALTERNATEC Oi.SVGCN SWANCON rile RIGHT„LATHS NLL BE REOUCED 8f C1A.VTRi TI•£ D6FE.REhCE IN f.VEN510t1 'd'. ^� SLOPE DETAIL 5 ECA'ICACE 1VC�F R REFERENCE FLARED END SECTION ROAD rJ:O 8121[H:E STA,DAROS 12" - 60" CONCRETE PIPE CULVERTS REVISION DATE I ST-EEF I OF t 302 'YiRQNA v-PNtTM{17T OF fRJlfS?G7TAitON 102.01 UBSTA-TION_ E-CURI-UY_- 1 _ GRA E REPRESE K 2'-DEPTH�- CL-ASS- TED I PROPOSED - - FINISHED--- GRADE- - 8 j -RiPR-AP---- -- - �1L LANDSCAPE PR CHAN P :-, w - lz ELj� - --- - -EAR--THEN- IL-L------- � �T-0 1, gg „. - -. - �F r Q- _ 10 OZ/SY ON -WOVEN -` ' °g t ! - i `-�� _� -� _ Ij° _ - _ iv _T� i,_ _�� a -T- .j,-W-v GEOTEXTI E BARRIER "5 - I EXISTING NG WETLAN S - GROUND _ --- - V-DO-� �S-T-UNE BACKFILL- E WETEA D-' IMPACT N CnN CK5 'I'-)N 0) NM Qt C) 0) -- _-_ O M ^h Ln ff- nLD 00 O Ln00 O 0 0 I O G O O O Ln O -50 -40 -30 -20 -10 0 10 20 rA' SECTION 13 STEEP SLOPE WITHOUT DITCH (SCALE: 1"-20') SCALE 0 20' 40' 30 40 50 Cell Name B/M Assembly Pipe Stand Foundation Cells (Pier) jPipe Stand Foundation Cells (Spread)l Foundation Cells for Other Typical Structures Steel Detail & Assembly (Pier) (Spread) VG-2A OUTSIDE ROAD DITCHES MEDIAN DITCH r PE D Stl. Y05.E OR �y LSICFE ( O 0 ORf. ..,ti:` E£. �#--a '- , 1 ' E D - apT11 -41 "2 VfsMCA ES `Y) DITCH AT TOE OF FILL OR TOP OF CUT TYPE D F kCllt SLOPE 3ACx SLOPE Wl 'A2 K SO- rOS. 5L'RiACE s =A�1, rT At 61 6+! P1 Y-0" 2' V. 48 0.555 AI 8' 6:, 4.1 4-1- 2'-9'- JOi 0.759 A2 S. 6�1 5!1 Y-0" I`P 42 0.509 A2 5" 6:1 5:1 4•-1" 7'-N '47 06i5 A3 G^ 6, 20 3'-0'• V 2.' 38 R1163 A3 8" 6.1 2.1 4'-1" r-6- 62 0.020 5" 40 411 2--r• 2'-r' sa 0.483 3" 4:! ar r-9" 2'-*i' 87 0.6f1 8" 41 3'1 2'-9" 2-r 72 0.537 J.2 xY 4 1 3 0 Y-5' 2'-8" 13O 0.670 8^41 .1 2'-9" 70"4:1 2:1 Y-5'- r-try' 171 0.533 8" '1 2`9" r-2" 55 0,435 i0' S 1 !%.I Y-5'- I'•6' tol 0.546 CS e" 3.1 20 2'-t" r-8' 50 O.SJB CS 10" 3fl 211 2'- &' r-10" 12 RS00 CT 'U" Yt •I -F-8" r-6' 80 0.463 GJ r0' S�1 In r•8" rt- 70 0.t26 r w(1` ff CURTAIN WALL DETAIL E r.a 00'hELS, 18' LONG a 5" C•C [ CIMAIN dXL TO Be LctAIED Al 9EONVU G N1 E4D Of AL GX4teL4 N.0 0( T11E LOVER EN? OF EIVR Iq> EAF.WSK:N HIalr Ct..RTAN NXL PLAN FOR TRANSITION OF PAVED MEDIAN DITCH TO MEDIAN DROP INLET CUTTER D `1 A ALTERNATE METHOD E -`� - �_srx I.'Y z e ----------1 ^ /, OF FORMING DITCHES �--- _-. s 11,ERt CONSTRUCTION JOINT s OPT:Orr MEOW`�/ CROP' SECTION D-D r anmL•s J^ yERr r.LAi aarrouT c��o var Lu,E F`r-T i?IROA.CH PAVED E-J V1 nAN GTCH D� I NOTES; � hOTE: i0R 5ECT0ri A -A Ar:O 8-9 SEE STAND.MS C+-7, 7A AN 70 TRAITvix PCRTION OF PAVFO piCH TO BE PAD FOR AT THE SAVE SEC. NON E-E ILL DifCHES VAY BE CDNStRUCf£O ,YTTH vERt.CAL PRLCE [it)PER S0. YA-10 ICY CPPROAC11 PAVED MEL.A: O1rcif. SDES AT THE CPT:O! OF ThE SIAIXAR0 PC-2A !ENTr31ES TO W CLA4S AS CCNCRETE CONTRACTOR. SFCCIFICANCN \VDO REFERENCE STANDARD PAVED DITCHES ROAD W t57,OOE 31FAADARD3 2 'l RMNIA OLPARTMd W C3• FRAASPORTAfpN s£vtswr: car€ S-EET 1 cr 1 AA.OI DETAIL 5 DETAIL VDOT STANDARD 24" ES-1 END SECTION Q3)VDOT STD PG-2A DITCH LINING (NTS) (NTS) 540 540 530 53C 520 52C 510 51C 500 50C 490 49C UBSTATiON- ECURITY" 1 i - PRQ FI OSED ISHED GRADE_ - EP_RESENIE PLAN ON SITE URADL 2' D E P T CLASS --- - 1 RIPRAP - -- - i -- Z F J - 4- .= `T ` I� j Q. EXISTINGGROJND 1G_ Y NON -WO EN ! b.� L i, I Lm a..-. --.-.- --.- i-- V_0 T-"57- - B STONE CKFILL - f -- - EXISTING WETLANDS_-_ _ 00 n Co t0 QJ Ln 00 Lo N (0 r --_--- O O �i�� - cs� 0) `: U5 rn IT -c�5 - I� - l 7 C7 ct Lr)- Li) d t -- U--_ , �t "� L0- ..--.-_� 00 Lc') Lt1"-----ram Lr) �r5 540 5,30 520 510 119PZO� Rid, J -50 -40 -30 -20 -10 0 10 20 30 40 50 rB' SECTION 13 STEEP SLOPE WITH DITCH (SCALE: V-20') SCALE 0 20' 40' Geosyntec C011SL11tati[S Energyo '"rm� Inlhf uls i�- CONSTRUCTION DETAILS L$�4ITOGORDONSVILLE SUBSTATION EXPANSION NA, ALBEMARLE COUNTY, VIRGINIA UJI aC A Name Dote Project No. Sheet No. M �� 5#0 14 Designed by: GEO 09/21/18 99-2523 � 040, g�`� Approvals TER 09/21/18 Scale 3 OF 2 M Approvals AS NOTED w B/M No. Revisions c w w o �Uja Cad File Name 0000000a.dgn �7D�rawing No. � o � PLOTTED: sassasausssSYT1ME 0 0 0 0- 0 0 0 .00 a s Geosyntec" consultants Page 1 of 12 Written by Y. nun Date 06i01/18 Reviewed by: K. LaClair Date: 06/01/18 Client DVP Project: Gordonsville Project No.: NIV1470 Task: SUbstatio , Stormwater Management Narrative 1. Introduction The Gordonsville Substation expansion calculation package has been prepared by Geosyntec to document compliance with the Commonwealth of Virginia stormwater regulations and the Albemarle County local stormwater ordinances, and to justify the stormwater related infrastructure proposed with the project. The project expansion is located at 3245 Lovers Lane, Gordonsville, Virginia, 22942. The expansion is on the same RA -Rural Area zoned property as the existing substation, owned by Virginia Electric and Power Company (d/b/a Dominion Virginia Power). The proposed substation expansion will be constructed north and east of the existing substation and within the property boundary, in accordance with site plans prepared by Geosyntec. Tile proposed substation expansion must be in compliance with the Virginia Code §9VAC'25- 870 pertaining to the Virginia Stormwater Management Program (VSMP) Permit regulations, the Virginia Erosion and Sediment Control Regulations under §9VAC'25-840. Under the technical criteria, the substation site design will have to meet the requirements for water quality (§9VAC'25-870-65), stream protection (§9VAC'25-870-66.B), and flood protection (§9VAC'25- 870-66.C) as it relates to stormwater runoff. II. Existing Site Characteristics The proposed substation expansion site is located in a vacant portion of the property adjacent to the existing substation area. The expansion area is covered by grassy areas underneath existing transmission lines, a wooded area to the southwest, south and southeast and small areas of gravel access roads to the southwest. The existing terrain is relatively steep With slopes between 11% and 1%. A high area of topography is located to the west forming a drainage divide conveying primarily to the southeast. The majority of site sheet flows to an existing topographic depression southeast of the existing substation. This property is within the South Anna River, Dove Fork watershed draining to Pamlmkey River, which ultimately drains to York River. (HUC020801060101, VA 6i1' Order YO01). The substation expansion requires a stonnwater management facility to the southeast that drains via sheet flow from a level spreader to the adjacent wetlands. Wetlands have been delineated on this parcel, and impacts will be mitigated by purchasing wetland credits elsewhere in the watershed. 0 1 Geosyntec'> consultants Pagz2 of 12 Written by Y. Dun Date 06101/18 Reviewed by K. LaClair Date. 06/01/18 Cheat, DVP Project Gordonsville Project No. NIV1470 Task: Substation Existing Soil Characteristics The soil in the middle part of the existing substation consists of soil Type 19C, Cullen loans, 7 to 15 percent slopes, hydrologic soil group (HSG) B. The soil in the north and east part of the existing substation consists of soil Type 19D, Cullen loam, 15 to 25 percent slopes, hydrologic soil group (HSG) B. The existing soil inunediately surrounding the existing substation pad and along the north and northeast edge of the property consists of soil Type 57B, Mount Lucas silt loam, 2 to 7 percent slopes, hydrologic soil group (HSG) C/D. The existing soil to the south of the existing substation consists of soil Type 19B, Cullen loam, 2 to 7 percent slopes. This soil is generally well drained, based on the most linliting layer to transmit water, from 0.00 to 0.20 inches per hour. The depth of the water table is greater than 80 inches. Tile hydrologic soil group (HSG) is B. A typical soil profile includes: 0 to 8 inches: Loam 8 to 60 inches: Clay 60 to 67 inches: Clay 67 to 79 inches: Bed rock The USDA Soils Survey map has been included nil Site Plan Sheet 2 for reference. Drainase Outfall Conditions The substation expansion project conveys to one (1) outfall defined as the parcel boundary to the southwest and the wetland boundary to the northeast, ultimately draining to an unnamed tributary of the South Anna River to the east. The controlled flow off the substation pad will be directed to a stormwater management facility and ultimately level spread off the property. Uncontrolled flow off the pad embankment will flow into the adjacent wetland. The outfall and corresponding drainage areas are delineated and shown on Site Plan Sheet 16. III. HYDROLOGIC CALCULATION METHODOLOGY Given the existing site condition and the proposed site plan, the pre -developed and post - developed flows Were determined using the National Resources Conservation Service (NRCS) method, which is dependent on the soil's ability to absorb a certain amount of precipitation before runoff begins. This ability is categorized based on a Hydrologic Soil Group (HSG). The hydrologic calculations were performed using HytlroC'ADs micro -computer program. The following list details the assumptions used in determining the pre- and post -development flows for each identified outfall. Geosyntec" Geosyntec'' consultants consultants Page 6 of 12 Page 7 of 12 Written by: Y. Dua Date: 06/01/18 Reviewed by K. LaClair Date: 06,01/18 Written by: Y. Run Date 06/01/18 Reviewed by: K. LaClair Date 06/01/18 Client. DVP Project. Gordonsville Project No NIV1470 Task: Substation Client: DVP Project: Gordonsville project No.. NIV1470 Task: substation quality portion of the regulations[. Compliance with the above stated criteria is achieved by be noted that other requirements not applicable to this project are also listed in the regulation, implementing the Virginia Runoff Reduction Method (RRM). The RRNI incorporates so to review a complete listing of requirements; one should review the regulations directly. phosphorous reduction efficiencies With a corresponding runoff reduction values assigned to best management practices (BMPs). Some BMPs provide better phosphorous removal than Reguhdlon/Standard Requirements others, and some provide all additional merit by providing a higher runoffreductiom. The higher Virginia Administrative Code 1. \Ian -made Channel. a) The marinade stonnwater conveyance system runoff reduction benefits the stream protection and flood protection portions of the regulations. §9VAC25-870-66.B Charnel Protection shall convey the post -development peak flow rate &our the two-year 24-hour storm event without causing erosion of the system or b) the peak discharge requirements for concentrated stormwater flow to natural stormwater A RRM compliance sheet is found in Site Plan Sheet 15 for reference and reflects a required conveyance system in subdivision 3 of this subsection shall be met. (see site phosphorous removal of 5.86 pounds per year. This will be attained through offsite credits manual channel requirements) in accordance with §9VAC25-870-69. 2. Restored stormwater conveyance systems. When stonnwater from a development is discharged to a restored stornnvater conveyance system that has been restored using manual design concepts, following the land -disturbing The offsite nutrients from Resource Environmental solutions' (RES) RCP's Landing Nutrient activity, either: Batik facility are to offset the water quality impact of the proposed substation expansion. The a. The development shall be consistent, in combination with other stomrwater existing substation was constructed prior to the current water quality regulations, and runoff, with the design parameters of the restored stormwater conveyance system that is fimetioning in accordance with tole design objectives; or subsequently cannot achieve the required phosphorous removal using a non -propriety BMP due to space limitations downstream of the substation within the property boundary. b. The peak discharge requirements for concentrated stormwater flow to natural stormwater conveyance systems in subdivision 3 of this subsection shall be met. The letter of availability from the nutrient bank is included in the Site Plan Sheet 15 for reference. 3. Natural Channel. a) When stomrwater from a development is discharged to a natural stonnwater conveyance system, the maximum peak flow rate from V. Channel Protection and Adequate Outfall the one-year 24-limr storm following the larld-disturbing activity shall be calculated in accordance with the following: The project must be in compliance With §9VAC'25-870-66 of the VSMP permit regulations and QDe„Iq,,a< I.F.*(Qp,e_a_l°pit* RVp_o,e el°pea)/RVoe,ei°ped §9VAC'25-840.66.13.1 of the Virginia Erosion and Sediment Control Regulations. These under no condition stall QDe.eop be greater than Qpe.M,et°panor shall regulations provide the limitations on stormwater impacts to downstream properties due to QD-1,ped be required to be less than that calculated in the equation (QF1, t * changes in runoff characteristics, as Well as the standards and criteria by Which to determine RVFo,es,)/RVDe"'"pea the adequacy of the receiving channels. 'The marinade stormwater conveyance system shall conveythe post -development peak flow rate from the two-year 24-hour storm event without P P P Y 4. Limits of Analysts. Unless subdivision 3 of this subsection is utilized to show compliance with the channel criteria, causing erosion of tile system. Previous regulations outlined criteria and standards used to protection stornnvater conveyance systems shall be analyzed for comphance with channel protection criteria to determine adequacy are summarized below in accordance with Minimum Standard 19; a) a point where either the site's contributing drainage area is less than or equal however, satisfaction of the requirements listed under '9VAC25-870-66 will provide automatic 1 § P to 1.0°.a of the total watershed area, or b) the site's peak flow rate from the one -yea 24-hour storm is less than or equal to 1.0% of the existing peak flow compliance With Minimum Standard 19 under the erosion and sediment control regulations. A rate from the one-year 24-hour storm prior to the implementation of any summary of the new requirements applicable to this project are summarized below. It should stonnwater quantity control measures. ' Other constituents that are of coucem nay also include total suspended solids (TSS) and nitrogen. If phosphorous levels are bruited to the 0.41 pounds per acre per year, then it is assumed that other pollutants are also being reduced to acceptable levels Geosyntec" consultants Page 11 of 12 Wliner by Y. Dua Date: 06/01/18 Reviewed by K. LaC'b dr Date: 06101/I8 Client. DVP Project: Gordonsville Project No.. AIV1470 Task: Substation The hydrology calculations associated with the elements included in this package were developed using the rational formula: Q = CCJI-lv Eq. (1) Where: C = Rational runoff coefficient C'f= Saturation Factor, 2-year 1.0; 10-year 1.0; 100-year 1.25 (Wright - McLaughlin, 1969) I = Rainfall intensity, iivl r Ad = Drainage area, acres The runoff coefficients were chosen considering the conditions listed in Table 9 below. The saturation factor considers soil saturation in the larger storms. Table 9 Rational Runoff Coefficients, C Description Coefficient, C Woods, Good 0.25 Grass, Good 0.30 _ Site Gravel (Non -Compacted) 0.70 Compacted Gravel 090 Concrete 0.90 The rainfall intensity, I, is determined using the following equations, based on the computed time of concentration, T . The time of concentration was determined using rational methodology via the Seelye Overland Flow Time and Kirpich Time of Concentration for Small Drainage Basins (use for channel flow). Where Overland Flow Time: Virginia Administrative Code Concentrated stormwater flow to stornnvater conveyance systems that §9VAC25-370-66.C.1 currently do not experience localized flooding during die 10-year 24-hour Sheet Flow storm event The point of discharge releases stomrwater into a stonnwater conveyance system that following the land -disturbing activity, co itfines the Geosyntec" consultants Page 12 of 12 Written by: Y. iiva Date 06/01/18 Reviewed by: K. LeClair Date06/01/13 Client DVP Project: Gard ousvill, Substation project No.: \7 V1170 "risk: Where Time of Concentration for Small Drainage Basins: Tc = 0.009413 H e as Lis Tc - FLOW TIME, MINDTES H - HEIGHT, FEET L - LENGTH, FELT Eq (3) And where Intensity is measured: I = B ! (T, + D) E Eq. (4) Where: I = Rainfall intensity, imhr T. Time of concentration, minutes 2 3 4 5 Geosyntec" consultants Page 3 of 12 Written by: Y. float Date: 06/01/13 Revilewed by K. LaClah' Date: 06/01/18 Client: DVP Project Gardousville Project No 'NIV1470 Task 1. 'file estimated surface runoff used the NRCS curve number method. "The assumed CN values are presented below: Table 1 Curve Numbers, CN Description II1SG Curve Number, CN Impervious B 93 Impervious D 98 Meadow, non -grazed B 58 Meadow, mom -grazed D 78 Woods, good B 55 Substation Pad B 35 Substation Pad D 91 -Rzfer to Site Plan Sheet 16 for weighted CN values per OuttfAl 2. Both HSG B and HSG D are present on site. 3. The annual 1-, 2-, 10-, 25- and 100-year 24 luour precipitation data using a Type II 24-hour rainfall distribution in accordance with geographic boundaries is outlined below: Table 2 Precipitation Data Year Storm 24 hour Depth (fit)* 1 :2.83 2 3.42 10 :5.13 25 t6.37 too 18.52 'Sowce NOA A Atlas 14, volatile 2. Version 3, Location name: Gordiorw,dte. Virginia. US, Latra dr. 33.1266, Longitude - 781214 4. Boundary consists of existing wetlands to the niortheast of the substation pad and the parcel boundary to the southeast. Geosyntec' consultants Page 3 of 12 Written by: Y. Dua Date: 06/01/18 Reviewed by: K. LaCbdr Date: 06/O V IS $UbSt:lnOn Client: DVP Project. Gortlousvflle Project No. -vIV1470 Task: post -development peak flow ratte from the 10-year 24-hour storm event within the stornnvater conveyance system Virginia Administrative Code Increased volumes of sheet flow resulting from pervious or disconnected §9VAC25-870-66.1) impervious areas, or from physical spreading of concentrated flow through Sheet Flow level spreaders, must be identified :and evaluated for potential impacts on down -gradient properties or resources Increased volumes of sheet flow that will cause or contribute to enosiou, sedimentation. or flooding of down gradient properties or resources; shall be diverted to a stormwater management facility or a stornnvater conveyyance system that conveys the runoff without causing down -gradient erosion„ sedimentation, or flooding. If all rtmoff from the site is street flow and the conditions of this subsection are met, no further water quantity controls are re0mired. Based on the criteria listed above, calculations were ge.-tierated for the site outfall, which was deemed adequate for channel protection in accordanew with Table 6; with the summary of justification below using post -developed flow rates. The outfall location is depicted on Site Plan Sheet 16. The calculations in support of this appraisal are located of Site Plan Sheets 18 and 19. Table 6 Post- Developed Controlled Cllarrhel Protection Sunmllary outfall Drainage Justification Channel Refterence Notes ID Areas 'type I IA & 1B Energy plan-inade §9V.'AC25-870-66.B. la Qpo,i> Q.wo,,,nie Balance via Euergv Balance. Again, satisfying the criteria as set forth in §9VAC'25-870-66, will provide automatic compliance with Minimum Standard 19 under the erosion and sediment control regulations. As indicated in Table 6, Outfall 1 is justified via Energy Balance. Since no BNIP measures were implemented with the design, no adjusted curve numbers resulted from the BRIM compliance workshect used in the Energy Balance Equation. Site Plan Sheet 17 includes the detailed Energy Balance calculation and is summarized in Table 7 below. Tile post -developed flows for Outfall 1 do not meet the pre -development Blows, thus a Stormwater Management Facility Will be used to attenuate the 1-year 24-hour ewent to be less than or equal to the pre - developed flows. 7 8 9 10 11 12 Geosyntec" consultants Page 4 of 12 Written by: Y. Dun Date. 06/01/18 Reviewed by IC. LaClair Date. 06/01/18 Client: DVP Project: Cordoussille Project No. \LVU70 Task: Substation Table 3 Outfall Drainage Areas Drainage Pre -Developer! Post -Developed Area (acres) (acres) 1 5.264 5.2-16 * * Post -developed Boundary consists of two sub -drainage areas. POST -A and POST-B. Refer to Site Plan Sheet 16 for further delineation. 5. The time of concentration, T , was computed using TR-55 methodology. The Manning's Roughness Coefficient for sheet flow was assumed as short grass (0.15) or woods with light underbrush (0.40) for a maximum of 150 feet, depending on site conditions. Shallow concentrated flow assumed woodland (velocity factor of 5.0 fps), paved (velocity factor of 20.3 fps) and short grass pasture (velocity factor of 7.0 fps) and was used for the remaining distance up to a well-defined receiving channel. The remainder of the distance was defined by open channel (if necessary) as presented in the calculations (Site Plan Sheets 16-19). fable 4 Time of Concentration, T, Dralnagedrear I Pre-Dev edT Post -Developed Irvin) T, (ruin) I (PRE) 14.4 IA (POST -A) 11.7 IB (POST-B) 9.0 Based on the assumptions and inputs stated above, the pre- and post -development peak stonnwater discharges were computed for each outfall without Runoff Reduction via BMP practices. The calculations and associated hydrographs are located in Site Plan Sheets 16-19 for reference and are summarized below. Table 5 Estimated Peak Discharge Draivagedrea Pre -Developed (cfs) Past -Developed (cfs)-- Qi Qr Oro Q21 Orao Or Qr Oro Oa Qmo 1 (PRE) 5.25 8.03 17.43 24.32 37.21 - - - - - 1(POST-r)--- - - - - 1.76 2.57 12.01 24.27 41.52 i* Aa Pie- and Post -Developed 11- in Table 5 are i-onnolled with no sat\I devices in place and with no nawff reduction POST-T is die total corobured Post -Development diaatage area for diau,age areas IA and IB Geosyntec" consultants Page 9 of 12 Written by: Y. Una Date 06/01/18 Reviewed by. K. LaChdr Date: 06MI118 Client: DVP Project: GradaProject No.. NIV1470 Task: Substation Wu fable 7 Energy Balance versus Post -Developed Condition 1-year; 24-Low' Energy y O Drainage Storm Post- Balance Comment ID ID Area Bala Balance- Developed (cfs) Satisfied Allowable (cfs) (yes/No) Yes, with 1 IA & 1B 3.17 1.76 Yes SWIM control device Refer to Site Plan Street 17 for Energy Balance Calculations VI. Flooding As mentioned previously, there is one (1) outfall associated with the project. The pre -developed and post -developed outfalls are analyzed using the pre -developed and post -developed drainage areas for each outfall, respectively. The total 10-year post -developed flow will be reduced sufficiently to satisfy the flooding regulation. The regulation associated with flooding is listed below and is part of the VSMP regulations. Regulation/Standard Requirements Virginia Adrrmuslrative Code Concentrated stonnwater flow shall be released into a stonuwater conveyance §9VAC25-870-66 C system and shall meet the following criteria as demonstrated by use of Flood Protection acceptable hydrologic and hydraulic nhelhodologies. 1. No Localized Flooding. Concentrated stonnwater flow to stonnwater conveyance systems that currently do Hot experience localized flooding during the 10-yea 24-hour storm event: The point of discharge releases stomrwater alto a stormwater conveyance system that, following the land -disturbing activity, confines the post-developurent peak flow rate from the 10-yea 24- hour storm event witlnn the stormwater conveyance system 2. Localized Flooding. Concentrated stormwater flow to stormwater conveyance systems that currently experience localized flooding doling the 10-year 24-hour storm event: Tine point of discharge either a) confines the post -development peak flow rate from (lie 10-year 24-hour storm event within the stonuwater coiiveyailce system to avoid the localized flooding or b) releases a post-developurent peak flow fate for tire 10-year 24-hour storm event that is less than tine predevelopment peak flow rate from the 10-year 24- hour storm event Downstream stomrwater conveyance systems do not require any additional analysis to show compliance with flood protection criteria if this option is utilized. 3. Limits of Analysis. Unless subdivision 3 of this subsection is utilized to show compliance with the channel protection criteria, stonuwater conveyance systems shall be analyzed for compliance with channel protection criteria to a) a point where either the site's contributing drainage Geosyntec" consultants Pagz > of 12 written by Y. Boa Date 06/01/18 Reviewed by K. LaClair Date: 06/01/18 Client: DVP Project: Gordonsville Project No.: Nivi-i70 Task: Substation IV. Water Quality In accordance with §91AC'25-870-63, the Part IIB technical criteria listed under §9VAC'25-870- 63 is applicable to this project. Per the regulation, technical criteria shall be applied to either a site considered a "new development" or a "redevelopment". For the case of the Gordonsville Substation, the site is deemed a "new development" bused on the parcel boundary and shall meet the requirements established in the regulation noted below. Regulaflon/Standard Requirements Virginia Administrative Code A In order to protect the quality of state waters and to control the §9VAC25-870-63.r1 discharge of stonnwater pollutants from re ulated activities, the P g following inrninum design criteria and statewide standards for stonnwater management shall be applied to the site I. New development. The total phosphorus load of new development projects shall not exceed 0.111 pounds per acre per year, as calculated pursuant to §9VAC25-870-65 2. Development on prior developed lands. a. For land -disturbing activities disturbing greater than or equal to one acre that result in no net increase in impervious cover fionn the predevelopment condition, the total phosphorus load shall be reduced at least 200o below the predevelopment total phosphors load. b. The total phosphorus load shall not be required to be reduced to below the applicable standard for new development unless a more stringent standard has been established by a locality. Vuguna Administrative Code Colupliance with the water quality design criteria set out in subdivisloiis A 1 §9VAC'25-870-65 A and A 2 of §9VAC25-870.63 shall be determined by utilizing the Viri n is RurroffReduction Method or another equivalent methodology that is approved by the board. In accordance With the regulations, under the new development designation, the post- conistruction stormwater runoff shall not exceed 0.41 pounds per acre per year of phosphorous. Phosphorous is the indicator constituent that is used to determine compliance with the water Geosyntec" consultants Page 30 of 12 Written by Y. nun Date: 06/01/18 Reviewed by. K. LaClair Date: 06/01/13 Cheat DVP Project: Gordonsville j Subsf:niou Project No.: NIV1470 Task Regulation/Standard Requirements area is less that or equal to 1.0% of the total watershed area, or b) the site's peak flow rate from the one-year 24-hour storm is less than or equal to 1.00.o of the existing peak flow rate from the one-year 24-hour storm prior to the uuplementation of anv skaunvater quantity control measures. For this project, the outfall was assumed not to have localized flooding since the receiving topohgraphy maintains a sheet Bow characteristic. With this determination, Table 8 lists the post -developed peak flow rate for the 10-year, 24-hour storm event that in comparison to the pre -developed peak flow rates. The routing and associated calculations are included in pre- and post -developed outfall shown in Site Plan Sheets 18 and 19. Table 3 Pre -Development and Post-Developnhent Site Flows Drainage 10-year Outfall ID Area Justification Reference Yates Qc.e Qp° 1 IA & Ill 17.43 12.01 Qp°,i<Qv�e §9VAC25- Implementation 870- of a SWM 66.C.B La control device VII. OPEN CHANNEL CALCULATIONS Regulations governing the design capacity for the stormwater runoff systems associated with this pncrimit applications are presented below. Regmlatiou/Standard Requirements Vrgintia Administrative Code 19.b(2)(b) All previously constructed man -shade channels shall be analyzed §4VAC50-30-40 Minimum by the use of a ten-year storm to verify that stornnvater will not overtop its Standards banks and by tine use of a two-year storm to demonstrate that stormwater will not cause erosion of eliannel bed or baits 19.b(2)(c) Pipes and stool sewer systems shall be analyzed by the use of a ten-year storm to verify that stonnwater will be contained within the pipe or systeal. Open channel (or ditch) design takes into account the permissible flow velocity for the 2-year peak discharge event and a freeboard amount of one foot for the 10-year peak discharge event. The methodology employed in determining the channel geometry, slope, and lining was the Man ning's equation, which is outlined in the following narrative. Geow ntec COI)SEI[MlItS Dominion Enerlgy,, STORMWATER MANAGEMENT NARRATIVE f°�'�` GORDONSVILLE SUBSTATION EXPANSION T = 0.225 Lo.d S-o.ts G -t.o 'r c Te =Ovp,saFlowrimemmules Q� ALBEMARLE COUNTY, VIRGINIA L t = t ength of Strip, feet 71 5 = Slo e, fee0teet m i a -� C = Rational "c" Valoe for Ground Character Q. Z m J j, Nome Dote Project No. Sheet No. t}iI o m �G � -� � o �U 1 ;, aCLA1R ` rjp. J Q �. Designed by: GEO 06/20/18 99-2523 64 Aula sr �, Z � - �� Approvals TER 06/20/18 Scale 14 DF Z 0 .�. o Approvals N.T.S. M Revisions 10IN4Ntt B/M No. Revisions o M LJ a ��LJ Typical Drawing Library Location Cell Nome 8/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stead Foundation Cells (Spread) Foundation Cells for Other Typical Structures Steel Detail & Assembly Cod File Name 0000000o.dgn DroWing No. i.- w sUSERNantEs Information (Pier) (Spread) PLOTTED 3$sssssssssSYT1ME®00-00® a 64 0 1 2 3 4 5 7 8 9 10 11 12 Virginia Runoff Reduction Mediod Vlforksheet OEiQ Virginia Runoff Reduction Method New Development Lomphance Spreadsheet -'version 3.0 SMA Design Spedfrcotions List: 2013 Draft Stds 8. Specs Site Summary Project TiVe: Gordonsville Substation Date : 43222 Taal RaMM - 43ladles Sate Land Cowr Summery Awls B soils C Soils 0Sods Totals %of Total Foneif(I omlrw 0.00 1.23 0.00 0.00 1.23 14 R4ten pd Tuxf (0—s) 0.00 3.29 0.00 Lis 4.40 49 br4mviaas Cover (acres) 0.00 2.39 0.00 LOD 3.39 38 9.02 100 Site Tv and Land Cover Nutrient Loads Site RV 0.46 Treatment Volume fti 15,22D TP Load (Ib/yrl 9.56 TN Load (1b/yr) 68.41 Total TP Load Reduction Required (lb/yr) 5.86 Site Compliance Summary Total Rwwff Volume Reduction (ftJ 0 Total TP Load Reduction Adveved (Ib/yr) 0.00 Total TN toad Reduction Achieved (lb/yr) 0.00 Remaining Post Development TP Load 1lb/yr) 956 Reraining TP Load Reduction (lb/yr) Hv;+ked Ares Date: May 15, 2013 To: Ana Gordon Senior Staff Engineer Geos dec Consultants From: Elizabeth Yost Solutions Analyst Resource Environmental Sohutions Suhject: York Rives Watershed—NutnentCredit AvadabiW Project Reference: 3245 Lovers Luc; 5.96 Credits Requested; HUC 02080106 This leer is to confirm 6 e availability of 5.86 m4wrized nutrient credits (Witr ent Credits-) from Resource Eaviraornmtat Sammons' fi`M-) RCP's Landing Nutrient Bank sty, for use by permit apphcants within The Yolk watershed, including MIC 02080106, to compensate for mrtned loadings m e mm of state or local regulations, as per Virginia Code § 62.1-44.15:35 and § 62.1-44.19:14 and Virginia Administrative Code 9 VAC 25-920-10 et seq. Thee Nutrient Credits are generated: and managed under The tenns of the Banking Instrtmment known as the RCP's Landing Nutrient Reduction motion Plan ("RIP). Please feel free to contact use if you have anv questions Sincerely. Elizabeth AL Yost Resource Envivi€anmental Solutions eyost s.0 MM Red Rot etd. Sim tea 0"V Met, HD aw 412 K. 4th SL 9ft 310 8011 Rtrttyr„ to 70= rn c by 9L sm306 sc 2M sip Mfarllrase r►a. 900 4a Ngtob% Tit 77006 iaooe+110a. salsa 2a WftwftLA xeae 137% EW "WSt suae 2w oltk WV 2M 33 TWO" wry S Me431 Robtrok Rat 15219 342 3Metfm 91. sine uo 1111014 nC 27605 144E 6 RosetwoRt Rd Rkhnnr14 VA 23230 Geosyntec o clnn"llll,ifw' Dominion Energy PW WATER QUALITY LAND COVER LIHOA� GORDONSVILLE SUBSTATION EXPANSION t. ALBEMARLE COUNTY, VIRGINIA m L Q .0 ♦ W O E3 IF /�" cN• au m U Nome Dote Project No. Sheet No. M a° 0 U UG�'Q� Designed by: GEO 06/20/18 99-2523 M i15 20 o aQ�+ Approvals TER 06/20/18 N.T.S. ScoOF M ONNIL, B/M No. Revisions «Mi w Revisions �o � LU Z Typical Drawing Library Location Cr Cell Name B/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stand Foundation Cells (Spread) Foundation Cells for Other Typical Structures Steel Detail & Assembly Cod File Nome 0000000a.dgn Drowing No. - N sUSERNAMEs lnfOrmotion p a a M (Pier) (S reed) PLOTTED assaaaassaaSYTIME Q� — 0 Q� 0 1 2 3 4 5 7 8 9 10 11 12 In i Q. C 0 Q. a O -IL U L U m 0 Z U Revisions SUSERNAMEf L a .0 Zm 1 a PRE -DEVELOPED DRAINAGE AREA MAP Ile, ` �. a .r am �_ _ = �►.. sDO.oD' ,_ t._ :,� AronN,> Hr 1 F(:FNn a Nr � —.. _.......53Y� 57�?0"£ � FOIAND ■ l i ■ I OUTFALL I BOUNDARY T LOPED OUTFALL 1 DRAINAGE ARE 64 I 04-74 BOUND�Y i•. ' TIME F CONCENTRATION=14.4min AIUIEO iWOODS1 �` _ . _ TIME OF CONCENTRATION (SHEET FLOW) / 4 \ TIME OF CONCENTRATION (SHALLOW CONCENTRATED (FLOW) • -tlr l- % `•j 1 "woDos SCALE feet z v �.. PRE -DEVELOPED \� OUTFACE 1 DRAINAGE AREA . \ :i• i AdiVED i �s• �\ � `�` WOODS I h' 1 '' •.I' a�p 1 ' :!g 1' Project No. PRE -DEVELOPED DRAINAGE AREA Figure No. Drown by: ARC V-60' Mv1470 GORDONSVILLE SUBSTATION` 1 Scale: ,BO Dote: 05ALBEMARLE COUNTY, VIRGINIA Dominion POST -DEVELOPED DRAINAGE AREA MAP ._..�..� .._.._.. .._-.-- V i �•.,�•�••�•SJ?' �•• ,.I f� 1■11 OUTFALL 57'?0'f D ` ; ■1 1 BOUNDARY POST -DEVELOPED PAD DRAINAGE AREA (4.32 ac) — - -•,_:.. ...-�-`--\- jam-----° 1 P � J TIME OF CONCENTRATION=1 2.1 min ou 1 r L 1I i. "l_; POST- POST -DEVELOPED EMBANKMENT DRAINAGE AREA (1.251 ac;) i 80 520.87 i ' �"[$� 1 TIME OF CONCENTRATION-9 0 min f 5ZOI _ 3.51, 25/ �' 1 GRADE GRADE 1 ( - r TIME OF CONCENTRATION (SHEET FLOW) ......... I • • i � � I � CONCENTRATED FLQ • �;. \ 1' { t, �c � ��! ! - . , TIME OF CONCENTRATION (SHALLOW CONCEN ) W • . , ('`. • , — - - TIME OF CONCENTRATION (CHANNEL FLOW) all 1 i-•�• O I _ _� ID� + ' • - - I :' ' \ I 1 POST-B i ( As.STORMWATER MANAGEMENT FACILITY OST-DEVELOP a ......1..'. 1 I j. MABANKME RAINAGE A ENERGY DISSIPATOR A � a OUTFACE 1 BOUNDARY 60' 0 60' 11 20' POST -DEVELOPED l / \` \\•:. SCALE �4 feet I PAD DRAINAGE AREA I �- � ` ! •\\ \ Styes i I 4uXED �` 1 i I I ,■1 � �8✓P j WOODS i ( k �' J • . 8 I I A ao\ .�!Q ED •,...~fiL I I i % r .•-, `4_I-- -ENERGY Ia i j I I '�. 1• s1PATDR 1 •• i � i. of Oita 1 \; � ,.. _ _ . a . • •r�. _ i \\ `t Drown by: ARC Project No. Figure No. POST -DEVELOPED DRAINAGE AREAS �� GORDONSVILLE SUBSTATION �RrffioominionDote- 05/04/18 MV1470 ALBEMARLE COUNTY, VIRGINIA 2 Scale: 1•260• Typical DrawinglLLibrary Location I Cell Name B/M Assembly I Pipe Stand Foundation Cells (Pier) (Pipe Stand Foundation Cells (Spr Information PRE -DEVELOPED ROUTING DIAGRAM 4 PRE —DEVELOPED OUTFALL 1 DRAINAGE AREA Radba Dl ar■*UM Gm, =Wft!Yblf>19o(1 s'A Prepared by90011W. P.inlMsftWMB S HydvCADS M.OD-IS sin UM 02DIO HydmCADftb�3d&m LLC POST -DEVELOPED ROUTING DIAGRAM POST -DEVELOPED STORN1WATER E RGY DISSIPATOR PAD DRAINAGE AREA kIANAGENIENT FACILITY POST -DEVELOPED POST -DEVELOPED ENIBANKNlENT OUTFALL 1 DRAINAGE AREA BOUNDARY Mwmoomearannee.omm.. s„bstabon a 1D.00-,8 sfi, Di95i O�NI,dIaCAD97��9�lioni LLG Foundation Cells for Other Typical Structures Steel Detail & Assembly (Pier) (Spread) Geosyntec° cl m wtants Professional Engineer Approval MDominion w Energy,'rN►e to I�► ` 8 STORMWATER MANAGEMENT DRAINAGE AREA MAPS & ROUTING DIAGRAMS GORDONSVILLE SUBSTATION EXPANSION ALBEMARLE COUNTY. VIRGINIA '$, LAN►l � Nome Dote Project No. Sheet No. p,A0950 ,tk,' Designed by: GEO 06/20/18 99-2523 Approvals TER 06/20/18 Scale 16 OF 2 0 Approvals N.T.S. _I B/M No. I Revisions Cad File Nome 0000000a.c PLOTTED, sitlsisfsslSYTIME Drawing No. W N « « « « M « « C « W (7- 6 j W Z y � � f- W 0. M 0 1 2 3 4 5 'tk 7 8 9 10 11 12 o E a a 0. z m y +� '0 U DO lO U � 0 tl Z V Revisions SUSERNAMES ENERGY BALANCE COMPLIANCE PRE -DEVELOPED 1-YEAR ROUTING ENERGY BALANCE CALCULATIONS: OUTFALL 1 Maximum Runoff ,$' MV1470 Gordonsville Substation Type 1124-hrf-YEAR Ram fall=2.83" MV1470 Gordonsville Substation Type 1124-6r f-YEAR Rainfi�l=2.83- Q1 PRE= S:25 cfs Q: LO PRE= 17.43 cfs Prepared by SCCM-01 Printed 5n 112018 Prepared by SCCM-01 Printed 51111211118 Q1 FOR= " 1.73 cfs Q10 FOR= 6.22 cfs HydroCAM 10.00-18 sn 07657 0 2016 ydrcCAD Software Solutions LLC Page 1 HydroCADO 10.00-15 Vn D7657 0 2016 HydmC:AD Software Sotubom LLC Page 2 Q1 POST= cfs OO POST= 16.51 cfs Summary for Subcatchment PRE-1: PRE -DEVELOPED OUTFALL 1 DRAINAGE AREA Subcatchment PRE-1: PRE -DEVELOPED OUTFALL 1 DRAINAGE AREA 1-Year Storm Energy Balance Runoff = 5.25 cis Q 12.08 hrs, Volume= 0.352 af, Depth= 0.8(r Hydlrograph PRE-DEVE LOPED RE ON VALUE JRV PREI Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Sparc=1.00d8.00 his, dt= 0.01 hrs Type 8 24-hr 1 YEAR Rainfall=233 s +- - I I i } ,- 4--4-, _ 4- A= acres A --Drainage Area i i i l i I i i i u � i i i i i i 1 h i l l , PRE C.h- CN=Curve Number Area (sf) CN Description i i i u 1-xtEAl ll�tfill$2.�3" i i r1"p PRE P1- inches P1=Precipitation 85 Substation Pad, HSG B 1 it n i 1tilriotfAr90229 29gsf ' PRES1= 3.51irrcics 5=(IQODj4 i)-10 10, 0,454 54 91 Substation Pad, HSG D 78,408 58 Meadow, nangrazed,HSG B ROn filVOIOn1;@?O.$5 of RD PRE = 0.80 inches RD = ((P-0.2*S)A2)/(P+0.8*S) 51,314 78 Meadow, non -grazed, HSG D 2,439 55 Wows, Good HSG B ] s RUfFBff QAP[f1�0 �0, RV PRE = 1.5,330 ft3 RV = (RD/12)*(A*43560) ' 5,706 98 Impervious, HSG e ' I i i I i i i i i i ii i i 1 II I I i I Mwilsn9th=7,4' (�r,.�-�-�.� Energy Ealance Flow: 0 98 Impervious, HSGD z29,299 74 Weighted Average ] l I _- .17 cs Q ES= 0.8* Q1 PRE) (RV PREPOST) 223,593 97.51 % Pervious Area 5,708 2:49% Impervious Area ON--�01in -7i.4 FORESTED CONDITION REDUCTION VALUE (RV FOR) Tc Length Slope Velocity Capacity Description T 5-2 acres A-- Drainage Area (min) ,test] OW) (R1sec) (ds) o 9.9 150 0.0400 025 Sheet Flow, FOR CN= CN=Curve Number Grass: Snort n= 0.150 P2 3.42" 2 4 a s 10 12 14 16 18 20 Z2 r 24 25 26 20 71 34 n a 4a 42 44 44 48 w. mw 41 FOR P1= 289 inches P1=Precipitation 1.6 318 0.0251 322 Shallow Concentrated Flow, Paved Kv= 20.3 Cps FOR S1= 6.39 inches S=(1000/cl+10 1.5 161 0.0680 1.83 Shallow Concentrated Flow, RD FOR = 0.30 inches RD = ((P-0.2*S)A2)/(P+0.8*S) Short Grass Pasture Kv= 7.0 fps 1.4 113 0.0700 1.32 Shallow C- antrated Flow, RV PRE = 5,788 ft3 RV = (RD/12)*(A*435W) Woodland Kv= 5.010S Forested Con&ion Fbw: 14.4 742 Total Q FC = am cis Q FC = (Q1 FOR) * (RV FOR/RV POST) POST -DEVELOPED REDUCTION VA�LJE (RV POST) A= acres A= Drainage Area POST 1 CN=Curve Nvrnber POST P1= 2.83 inches P1=11arecipitation POST S1= 2.66 inches S =(1000/CN)-10 RD POST= L07 inches RD = ((P-0.2*S)A2)/(P+0.8*S) RV POST = 20,291 ft3 RV = (RD/12)*(A*43560) ENERGY BALANCE EQUATION (cfs) 10 YEAR FLOW COMPARISON (cfs) 3,17 a 16.51 011 PMT Higher of Q EB and Q FC Q20 POST Hider of Q10 PRE and 0119 FOR 1-YEAR POST -DEVELOPED FLOW MUST 10-YEAR POST-MELOPEO FLOW MUST BE LESS BE LESS THAN 3.17 CFS THAN 17.43 CFS MV1470 Gordonsville Substation Type1124-hr 1-YEARRainW=283'' Prepared by SCCM-0I Printed 5115=183 HydroCADO 10.00-18 sm 07657 Q 2016 HydroCAD Software Solutions LLC Page 1t Summary for Pond ED: ENERGY DISSIPATOR Inflow Area 3.995 ac, I II A9% Impervious, Inflow Depth = 1.18" for 1-YEAR event 11AM = 0.56 tors 12.91 his, Volume--0.394 of Outflow = 0:56 cfs 12.92 hrs, Volume= 0.386 af, Allen= 0%. Lag= 0.3 min Primary = 0.56 cfs a 12.92 hrs, Volume= 0.386 of Routing by Dyn-St r-Ind method. Time Span= 1.OD48.00 hrs, dt= 0-01 his Peak Elev= 496.02' 0 12.92 hrs Surf.Area= 657 sf Storage= 363 d Plug -Flow detention time= 16.4 min calculated for 0 386 of (98% of inflow) Center -of -Mass det. time= 7.0 min 998.0 - 991.0 Volume Invert Avail.Stor2oe Storage Description #1 495.00' 1,244 d Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area Inc.Store Cum.Store (feet) (wl-ft) (cublc4eet) (cubic4eet) 495-00 80 0 0 496.00 616 348 348 496A7 922 131 479 497-00 922 765 1,244 Device Routing Invert Outlet Devices #1 Primary 496.00' 50.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s) frrimary OutFlow Max=0.56 cfs @ 12,92 hrs HW=496.02' TW=0.00' (Dynamic Tailwater) ' 1-Sharp-Crested Rectangular Weir(Wev Controls 0.56 cfs rig 0.49 fps) MV1470 Gordonsville Substation Type 1124-hr f-YEAR Rainfall=283- Prepared by SCCM-0I Printed 5/15/2018 HydroCAD6 10.00-16 wh 07657 0 2016 HydroCAD Software Soruaona LLC Paoe 7 Summary for Pond SWM: STORMWATER MANAGEMENT FACILITY Inflow Area = 3.995 ac.. 11.49% Impervious, lniiow Depth = 1.18" for 1-YEARevent Inflow = 6 83 cfs td 12.04 hrs, Volume= 0.394 of Outflow = 0.56 cfs 0_ 12,91 hrs, Volume= 0.394 af, Atlott= 92%. Lag= 524 n- n Primary = 0.56 cfs @ 12.91 hrs, Volume= 0.394 of Secondary = 0.00 cfs @ 1-00 hrs, VaWme= 0-000 of Routing by DynStor-Ind method, Time Span=1.0048-00 hrs, dt= 0.01 hrs Peak Efev= 507.1)6' Q 12.91 hrs Surf.Area= 6,194 sf Storage= 7,571 of Plug -Flow detention time= 143.2 min calculated for 0.394 of (100%of inflow) Center -of -Mass det. time= 143.1 min ( 991.0 - 847.8 ) Volume Invert Avan.Stome Storage Description #1 505.10, 31,656 d Custom Stage Data (Prismaticpsted below (Recalc) Elevation Suff.Area Inc.Stgre Cum.Store (feet) (sq-R) (cubic -feet) (cubic -feet) 505.10 20 0 0 506.00 4,330 1,957 1,957 507,00 6,111 5,221 7,178 508.00 7,415 6,763 13,941 509.00 8,824 8,12D 22,060 510.00 10,368 9,596 31,656 Device Routing invert Outlet Devices #1 Primary 503-00' 24.0" Round Culvert L= 70.0' RCP, groove end w1headwall, Ke= 0200 Inlet I Outlet Invert= 503.00' f 496.17" S= 0.0976 T Cc-- 0.900 n= 0.012, Flaw Area= 3.14 sf #2 Device 1 505-10' 4.0" Vert, OrtncefGrate C= 0.WO #3 Device 1 508-00' 60.0'Horiz.Orifice/Grate C=0-6DO Limited to weir flow at law heads #4 Secondary 509-00' 20.0'long x 10.0'breadth Broad -Crested Rectangular weir Head (feet) 0.20 OAO 0.60 0.80 1.00 1.20 1.40 1.60 Coef. (English) 2.49 2.56 2.70 Z69 2.68 2.69 Z67 2.54 Primary OutFlow Max=0.56 ors Q 12.91 hrs HW=507.06' TW=496.07 (Dynamic Taiwater) %=Clvert (Passes 0.56 tors of 33.10 cfs potential now) .2 OrificeriGrate (OAffce Controls 0.56 cis @ 6.46 fps) 3=Orifice?Grate ( Controls 0,00 cfs) $econdary OutFlow Max=0.00 cfs a 1.00 hrs HW=SW.1V TW=495.00' (Dynamic TaiIwater) T d=Broad-Crested Rectangular Weir(Controls0.00Ms) Typical Drawlmg L►brary Location Cell Name Information MV1470 Gordonsville Substation Tine it 21-hr r-YEAR Rainfa!l=2.63" Prepared by SCCM-01 Printed SH&OD78 HydroCADO 10 00-18 get 07657 0 2016 HydMCAD Soft Rxe 5u: u. u, s _LC Page 2 Pond ED: ENERGY DISSIPATOR Hydrograph 0.5 I , I I I , r r r r I. 1 I I I •'�� I I I I I , I I I I I I I I I I I r r r I 1 1 1 1 1 I 1 1 I 1 1 I I I I 110 n lcjwi A e'a 3 9 5 ,aq 1 I r --L-4 i = i l i i l ,--T-'i--T--r--'-r- I I I I I i l i l l I I I I I I 1 _1 11 1 I 1 .�_-�tbrir�w �3�Y\-- f-- -'r-�---r-1--1-- LV 1 1 1 1 1 1 1 1 I I I os ......... - - - - - - - - - - - - I t I I I I I I I I I I I I assa--•--'--'--`-- I - �--•--`--� -'--'--�--�--+--+--+--•--'--`--`--�--`-- IIII at6 I I ,-- ' ;--;-4-4- I I I I I I I I I -4-4- 4- -'r-, ---;--;--;--;--;--;--:----i---�--i--- 11 1 1 1 1 1 1 1 1 1 I l l l I I ores 0 1 .- '--'- ' i -H^-' 2 4 6 s to 12 14 18 15 20 22 24 28 28 80 82 34 A Sri 40 42 L Y Y nr (Sant �IItIION � P,nal1 MV1470 Gordonsville Substation Type 1124-hr f-YEA R Painlalf=2 8 " Prepared by SCCM-01 Printed HydroCAD0 10.00-18 Wn 07657 0 2016 HydroCAD Software Solutions LLC Page Pond SWM: STORMWATER MANAGEMENT FACILITY Hydrogrwh l4il�loiul►IAt a :-' '1----i- --'-- i I I I I I I I I I I I I I I I I I I I I l l l i l l l I I I I I I I I I I l i l I l l r l I I I I I I I I I I I I I I I I I I I I I I I I I I I 1I I II I I I I I I I I I I I I I I I ] 1--�--I-_I--1 't --iII- -T-•--i ir- •--. -TiI -r --TiI --,iI --Ti -r --'.iI^-T.i --.if_-.ir--.ir ••-iII1 --fIiI --Iir1 _-TIii iriI -TiiI I I I I . . Iii 1 1 I i t r U 1• ar H 36 32 34 36 38 Y 42 rid rib 43 ,ant p, I POST -DEVELOPED 1-YEAR ROUTING MV1470 Gordonsville Substation Type It 244V 1-YEAR Rainfall=2.83' Prepared by SCCM-01 Printed 51m2018 rtcroCAD- 10.00-18 sln 07657 02016 HydmCAD Software SWueons LLC Pape 3 Summary for Pond OUT: POST -DEVELOPED OUTFALL 1 BOUNDARY [40) Hint: Not Described (Outflow=inflow) Inflow Area = 5246 ac, 8.75% Impervious, Inflow Depot = 1.105" for 1-YEAR event Inflow = 1.76 cfs @ 12,02 hrs, Volume= 0-460 of Primary = 1.76 ors @ 1202 hrs, Volume= 0.460 af, Atten= 0%, Lag= 0.0 min Routing by Dyn-Mor-kid method, Time Span=1.00-48.00 hrs, dt= 0.01 hrs Pond OUT: POST -DEVELOPED OUTFALL. 1 BOUNDARY Hyd,-W-ph . . . . . i . . . . . . i 1 i i ii i i I i roots , ! 'Inflovl Areela=5�2d6'-ae I I I I I I I I I I I I I I I I I I I I I I I I I I 1 i t i i i C h i t i i i i t i i 1 I 1 1 I 1 1 1 1 1 1 1 1 1 1 1 f 1 1 S/M Assembly Pipe Stand Foundation Cells (Pier) Pipe Stand Foundation Cells (Spreed)l Foundation Cells for Other Typical Structures (Pier) (Spread) MV1470 Gordonsville Substation Type 0 24-hr 1-YEAR Rainfietf=2.83- Prepared by SCCM-01 Printed 5f150018 HydioCADS 10.00.18 Wh 07657 02016 HydroCAL) Software `_o U*,01s -LC Page 4 Summary for Subcatchment POST -A: POST -DEVELOPED PAD DRAINAGE AREA Runoff = 6.83 cts @ 12.04 hrs, Volume= 0 394 af, Depth= 1.1 d" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1.00-48.00 his, at= 0 01 hrs Type It 24-hr 1-YEAR Rainfall=2.83" Area (ac) CN Description 1.946 85 Substation Pad, HSG B 0.562 91 Substation Pad, HSG D 0.911 58 Meadow, non -grazed, HSG 8 0.041 78 Meadow, non -grazed, HSG 0 0.056 55 Woods, Good, HSG 8 0292 98 Impervious, HSG B 0.167 98 Impervious, HSG D 3.995 81 Weighted Average 3.536 88.51% Pervious Area 0A59 11.49% Impervious Afea Te Length Slope Velocity Capacity Description tmin) (feet) (1tlR) (ft(sec) (cis) 9.3 150 0.0466 027 Sheet Flow, Grass: Short n=0.150 P2= 3A2" 9.5 97 OA309 3.57 Shallow Concentrated Flow. Paved Kr- 20.3 fps 1.0 221 0.0318 3.81 Shallow Concentrated Flow, Paved Kv=20.3fps 0.9 123 0.1079 2.30 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 117 591 Total Steel Detail & Assembly MV1470 Gordonsville Substation Type It 24-17r 1-YEAR RainfaN=2.83' Prepared by SCCM-01 Printed 5/15f2018 HydroCADO 10.00-18 sM 07657 0 2016 HydroCAD Software Solutions LLC Page 5 Subcatchment POST -A: POST -DEVELOPED PAD DRAINAGE AREA I I I I I I I I I I I I I I I I I r I I I 1 I 1 ' -6be6t 1 1 I I 1 1 1 I I I 1 I I I I I I 1 I I I I I I I I 1 I I I I IIII IIIIIIIIIIII _ Il, �iUnOf;wAtBa=3�6-8G- tnff Vltjme0.39!lf I I I I I I I I I I I ' n ,D p>tht ,18fr Lit i I i I I I__l_-1i I Ii i iI I I --T--Ti i 1 ------------------- I i i i i i i i i i i i i Geosyntec' consultants ,A TH 0'A 1 Q4/� U CLAIR kYI.,E �. tJa tic, Np• U395a10 16 ` s�roNNL MV1470 Gordonsville Substation Type it 24-hr 1-YEAR Rainllatf=2.83' Prepared by SCCM-01 Printed 5115f2018 t,jaraCAD@ 10A0-15 Wn 07657 02016 HvdroCAD Software SWueona LLC Page 6 Summary for Subcatchment POST-B: POST -DEVELOPED EMBANKMENT DRAINAGE AREA Runoff = 1 34 cfs @ 12.02 his, Volume= 0.074 af, Depth= 0.71" Runoff by SCS TR-20 method, UH=SC5, Weighted-CN, Time Spam 1.0048,00 hrs, at= 0.01 hrs Type 11 24-hr 1-YEAR Rainfallz1ar Area (ac) CN Description 0.056 85 Riprap lined pad embankment, HSG B 0245 91 Riprap lined pad embankment, HSG D 0.584 58 Meadow, non -grazed, HSG 8 8 Me 0.3fi6 7 ow, non -grazed HSG 0 ad 1.251 72 Weighted Average 1.251 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (fee I (Rift) (ftfsec) (cfs) 4.1 76 0A921 0.31 Sheet Flow, Grass: Short n= 0.150 P2= 3A2" 0.4 143 0.0629 5.91 35.46 Channel Flow, Area= 6.0 sf Perim-- 85r_- 0.71' n= 0,050 4 5 73 0.0684 027 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" 9.0 292 Total Subcatchment POST-B: POST -DEVELOPED EMBANKMENT DRAINAGE AREA thbaRaph t]4 ct6' 1 1 1 I 1 1 t 1 I 1 I 1 i l i l i i l i i i i t 'Type li:2d'-hr i j j j j j j i-YEAR Rainfall$2.63!' I I ,III, IIIII uno#Area=i.254ac i i i i i i i r Ptonoff,Vq(ume=0.074, Of Runoff bepth.A.N' i FlowiLOngth=292' i Tf =9sl0 ruin ll l , i i i i i ON072 fl- ¢h..) Oft Dominion Energy® -�Me Vo jilit 11..($ ENERGY BALANCE GORDONSVILLE SUBSTATION EXPANSION ALBEMARLE COUNTY, VIRGINIA Approvals ADDrovols Name GEO TER Cod File Nome 0000000a.c PLOTTED* sssssssssssSYT1ME Date Project No. Sheet No. 06/20/18 99-2523 06/20/18 Scale 17 OF 2 0 N.T.S. B/M No. Revisions gn Drawing No. 0000-000 W t- r N M M M M M M M M c M L+J w Z 1, ►- LrJ O V) .0a a e=e 0 1 2 3 4 5 `4- 7 8 9 10 11 12 ail i0. Q. C n. 1 m 0 Je L N m a N v nL. Z Revisions tItUSERNAMEs POST -DEVELOPED 10-YEAR ROUTING MV1470 Gordonsville Substation Type II24-hr 10-YEARRainfaE=5.18" Prepared by SCCM-0I Printed 5/15/2013 HydrorADD 10.00-la sIn 07357 '3 2016 HydroCAD Software Soluuons LLC Paqe I Summary for Pond ED: ENERGY DISSIPATOR Inflow Area = 3,995 ac, 11.49% Impervious, inflow Dep€h = 3.14" for 10-YEAR event _ ?= 1. 47 12.t` nr" Vo;um.- 0 of Lmflovy 10.26 cfs o @ Outflow = 10.26 cfs @ 12.15 his, Volume= 1 039 at, Atten= 13%, Lag= 0.2 min ' = PPrimary10.2b cfs @ 12.fVotume-1.039 of 5 hrs, Routing by Dyn-Stor-Ind method, Time Span= 1 00-48.00 his, dt= 0.01 his Peak Elev= 496.16' @ 12.15 hrs SurfArea= 900 sf Storage= 468 of Plug-F!ow detention time= 9.1 min calculated for 1.039 of (99% of inflow) Center -of -Mass det. time= 4 1 min ( 1.003.1 - 998.9 ) Volume Invert Avail Stofage Strracie Descr!ption 7 ? Prist ra fc Listed b.lovr Recalc 1 _44 cf Custom Stage Data m t ) n1 495.00' g ( } Elevation SurfArea lnc.Store Cum Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 495.00 80 D G 496.00 6113 348 348 496.17 922 131 479 49700 922 765 1,2-14 Device Routing Invert Outlet Devices ml Primary 496.00' 50.0' long Sharp -Crested Rectangular Weir 2 End Contraction(s) rinmary OutFlow Max=tO.24 cfs fa 12.15 hrs HW=496.16' TW=0.00' (Dynamic Tallwater) 1=Sharp-Crested Rectangular Weir (Weir Controls 10.24 cfs,@ 1 30 fps) MV1470 Gordonsville Substation Type U 24-hr 10-VEARRainfall=5.18" Prepared by SCCM-01 Printed 511512018 HYdfoCADD 10.00-18 sin 07657 ,D 2016 HydroCAD Softwara Solutions LLC Pao 7 Summary for Pond SWM: STORMWATER MANAGEMENT FACILITY lnflo'1v Area = 3.995 ac, 11.49°o Impervious, Inflow Depth = 3.14" for t0-YEAR event lnflo'w = 18.08 cfs @ 12.03 hrs, Voiume= 1.047 of Outflow = 10.26 cfs @ 12.15 hrs, Volume= 1.047 af, Man= 43%, Lag= 7.0 min Pnmar} = 10.26 cfs @ 12.15 hrs. Volume= 1047 of Secondary = 0.00 cfs @ 1.00 nrs, Volume= 0.060 of Routing by Dyn-Stor-Ind method, Time Span= 1.00-48 00 hrs, dt= 0.01 hrs Peak Elev= 508.33' @ 12.15 hrs SurfArea= 7,873 sf Storage= 16,421 of Plug -Flow detention tinge= 179 1 min calculated for 1.047 of (109% of :nrlow) Center -of -Mass dot. time= 179.2 min ( 998 9 - 819.8 ) Volume Invert Avail.Storage Storage Descnption #I 505.10, 31,656 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Area In . tore Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 50510 20 0 0 50600 4,330 1,957 1,957 507.00 6,111 5,221 7,178 50800 7,415 6,763 13,941 509.00 8,824 8,120 22,060 510.00 10,36a 9,596 31,656 Device Routing Invert Outlet Devices Ri Primary 503.00' 24.0" Round Culvert L= 70 0' RCP, groove end ,Wheadwail, Ke= 0.260 Inlet! Outlet Invert= 503.00' 1496.17' S= 0 0976 'P Cc= 0.900 n= 0.012, Flow Area= 3.14 sf #2 Device 1 505.10' 4.0" Vert Orifice/Grate C= C 600 93 Device 1 508.00' 60.6" Horiz. OnficeiGrate C= 0.600 Limited to weir flow at low heads Secondary 509.00' 20.0' long x 10.0' breadth Broad -Crested Rectangular Weir Head (feet) 0.20 0.40 0.60 0.80 1,00 1.20 1.40 1-60 Coef. (English) 2.49 2.56 2 70 2.69 2.68 2.69 2.67 2.64 Primary OutFlow Max=10.26 cfs @ 12.15 his HW=503.33' T'01=496.16' (Dynamic Tailvrater) t Culvert (Passes 1026 cfs of 39.32 cfs potenual flo:v) 2=OrificelGrate (Orifice Controls 0.73 cfs Cad 8.42 ip3) 3=OrificefGrate (`Heir Controls 9.52 cfs @ 1.86 fps) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs HW=505.10' ToV=495.00' (Dynamic Tailvater) 4=Bread-Crested Rectangu tar Weir( Controls 0.00 cfs) NIV1470 Gordonsville Substation Type 1124-hr 100-YEARRainfal1=8.52" Prepared by SCCM-01 Printed 5115i2018 HydroCAD 10.00-16 sin 07357 lD 2016 HydroCAD Softtmre Solutions LLC Pape 12 Summary for Subcatchment POST -A: POST -DEVELOPED PAD DRAINAGE AREA Runoff = 34 88 cfs @ 12.03 hrs, Volume= 2.076 af, Depth= 6.23" - - r - Runoff U' SCS TR _0 n atimod J aCS 'aVe hted ,N Time a . n L00-48.,0 hrs dt= 001 his y t9 R Type 11 24-hr 100 YEAR Rainfall=3.52" Area (ac) CN Description 1.946 85 Substation Pad, HSG B 0.582 91 substation Pad, HSG D 0.911 58 Meadow, non -grazed. HSG B z^ 0.041 78 Meadow, non -grazed. HSr, D 0-056 55 Woods, Good, HSG B 0.292 98 Impervious, HSG B 0A67 98 Impervious. HSG D 3.995 81 We;ghted Average 3-536 88-D l % Pervious Area 0.459 11-4910 Impervious Area To Length Slope Velocity Capacity Desorption (min) (feet) (ftlft) (ftfsec) (cfs) 9 3 150 0.0466 027 Sheet Flaw, Grass: Short n= 0.1:A P2= 3.42" 0.5 97 00309 3,57 Shallow Concentrated Flow, Paved Kv= 20.3 fps 1 0 221 00316 3.61 Shallow Concentrated Flow, Paved Kv= 20.3 fps 09 123 0.1079 2,30 Shallow Concentrated Flow, Short Grass Pasture Ky= 7.O fps 117 591 Total Typical Or- awingii Library Location I Cell Nome Informtation 11 I MV11470 Gordonsville Substation Type P 24-hr 10-YEAR Rainfall=5.18" Prepared by SCCM-01 Printed 5/15/2018 HAroCAD.31 10.00-16 sin 07657 ID 2916 HydroCAD Software Solutions LLC Page 2 Pond ED: ENERGY DISSIPATOR 2 I ------------ ---- 3..;M . --------------- - - ---------- ---- -- -- -, lnlow,A e- 3 9 5 a ak_ , I - - - - . - - Pa I'ev=496.'f ,- T �__�__.j__a__7__ - -- - - I I I 1L--",----- I , __,__T__r_____r..I,._T__,.__,_$nT� - - - ' - I _ f_ t r-' e�_40 -8, Cf I I . I 1 - � --�--!- (--, - - - -- -- --'--}--,--a r__ , I I -- -- -- -- -- 7111, > , A' a ,A ,, +s 1� r. n - ,n a, ii .� {3, 1� - __ 15 i, Tlln. tl*..) ,M- Pflna MV1470 Gordonsville Substation Type 1124-nr 10-YEAR Rainfa11=5.18" Prepared by SCCM-01. Printed 511512018 HydroCAD) 10.0048 sin 07657 ID 2016 HydroCAD Software Solutions LLC Paqe 8 Pond SWM: STORMWATER MANAGEMENT FACILITY nyutograptt ,7 _1 -1__.__.__,_.__- ---- -- ---- ---- ----- -- 13-,,--I 1373 c!5 __ __�__i __�____.I i _1 I _ 11 ' i i - ! ` ' n IOW-Ar ea=3 9 S'a I 1 - 11 , • {5. . 1_. 1__ 1__1__l__ __ __L_J_ __J1_ __ __. _.- __ _J_. J__3 __ __ __ ,3 - - - - - - ---- - --rPeak-Eleu=5D8.33'-- I- - -- -- -- -- -- - - -- -- -- -- --------- -- - -- ----- - -- 13 - -- -- -- -- --, -- - -- - ,-- -- - Stora r-jq"42h Cf - _,l 3_ 12 -- -- -- -- ----1---- �- -, -- --,, --.-- - -- -- -- . , , , I , I I I 11 I I I � I I I I I I I I, 3 __ _ _ __ __I__, ____ __ __ __ __ _ __1--;'' __ _ _ __ aJ--'"-'--•--.'--'-----'--'--'-----'--=--=--`----- --'--- I I , . , , - __ __1__1__ _. __ _ _,__r__J__!._ __ __ __ ____ __J__J,__1__1 -_- , I j__ -------- - j__ __ __ __ _ __ __I ___ __ __ __ ___ _ __ _ __ __ __ __ _-___ atna5 -_i__(__ _ _ __ _ __ __ __ i__ __ __'_'___'__'__,,__-__ _ _ a . 1. 11 ,_ 14 to 19 2e 2i 23 37 32 '.d _� s3 6 42 4_ .5 1: rim. (.ours) - maaa -" duaaa U MV1470 Gordonsville Substation Type 1124-hr 100-YEAR Rainfa11=8..52" Prepared by SCCP11-01 Filmed 511512018 HydroCAD] 10.00-I8 sin 07357 'D 20I5 HydroCAD Saf N,ife SQ1utiono LLC Page 13 Subcatchment POST -A: POST -DEVELOPED PAD DRAINAGE AREA Hydrograph a_ __ __ _ _ _ _ _ __ .-__ y ., _�__y___,_ .,__�__.__� ,. __, _.__, _ _ _ ____ 34 -Aa5 - - - _T_ _e1' 2 r IIII a .. , , , . . -, -,- ., . . , --1-1-- . ' II - - - p, 7 -- -- --,-- -- -- -- -- -'-- -- ---100:YE-AR-RainfMih8'52"- 3 -1-- - -- -- -- -- -- -- ----- - -- -- - -- - -- -- ---' - - ------ I a jl-- -- -- -- -- -- - -- -- -- , - ----Ru�of-4raa=l3�9� a�-- - - - - = n #a _ _ Ri7 o f �umeT2:.076-af _ 1__J__J__J__J__ _J_.J--J______________I______________________ ___ _ : 7 --' -;__ , - - - --- E78[7t 3 „ - - -- - tl n., ' -r - -,- ,- , ---- i{' , _;F_I,PW- 6=-09'i_'-- , I , _ ,--�--,--,- ,- ,-- ,-T,c=,'1.I,. rain , , v y__.,__y__y__ y__ y__�__.,__7__y__. , - 1---------.--.__ _ __ _ __ _ __ _ __y__ __ __ __ICN 8;[__ 3 __ _ __ _ __ __ _ __ __ _ _"__1__"_____-7- __ __ _ ______ ______ 2 -- ; - - , - ,-- - -- - - -- - - -- - ---- 7- rime (hour.) MV1470 Gordonsville Substation Type 11 24-hr 10-'YEAR Rainfall=5. f 8" Prepared by SCCM-0I Printed 5/1512018 H'y droCACID 10.00-la 51n 07357 rD 2016 HydroCAD Software Solutions LLC Paqe 3 Summary for Pond OUT: POST -DEVELOPED OUTFALL'I BOUNDARY [401 Hint: Not Described (Outflow=lnflovi) Inflow Area = 5246 ac, 8.7516 Impervious, Inflow Depth = 2.93' for 10 `YEAR event Inflow = 12.01 cfs @ 12.14 hrs, Voiume= 1 283 of Pnmar/ = 12.01 cfs @ 12 14 hrs, Volume= 1,283 at AtEen= 0%, Lag= 0.0 min Routing by Dyn-Stor-ind method, Time Span= 1.00-48.00 hrs, dt= 0.01 hrs Pond OUT: POST -DEVELOPED OUTFALL'1 BOUNDARY Hydrograph 9 x 3 J--=--:--;-- ..__!_ __.__1 __3._!._!_-.__,-.- __A__ __ _ _ __.__ __ __ _ __..__.__ _1__ __ __ _ _ _j ' - - -- lnllow A ea=5 2 6 •a - I- -- r 4 I I I : i I � I , : ' I I I I .. I i a__________----- ____ 1__,__.__!__,__,__ __ _ __ __ __ __ __ _._..__, __ I I I I I I T- - - - - - - - - - - - - - - - - - - - - - - - - 7 - - - - - - , - - - - I , , , , , , . , , j__ I_ i __i__ _ , 11 t- J --' - -- �--�--"-- ----,'--,-- -- - -- - - -- -- - -- - - - - -- - " 1. 1, I. 1" 1" ,a vn „ ,1 ,: " 1; ;, - 3,- 3 Tuna tR.111n F__1Wr_-__II ,d- 7 MV1410 Gordonsville Substation Type A 24-hr 100-YEAR Rainfall=8.52" Prepared by SCCPA-01 Printed 511512018 HydroCAs> 10.90-18 sin 07357 iD2016 HydroCAD Software Solutions LLC Pape 14 Summary for Subcatchment POST-B: POST -DEVELOPED EMBANKMENT DRAINAGE AREA Runoff = 10 20 cfs @ 12.01 hrs, Vo:unme= 0.537 af, Depth= 5.1 S' tad CN Tim.. S an= L00 48.00 hrs dtt- 0.01 his Runoff by SCS TR _0 method, UH-SCS, N_sgh R Type II 24-hr 1G0--TEAR Rainfa11=8.52" Area (ac) CN Description 0.055 85 Riprap lined pad embankment, HSG B 0.245 91 Riprap lined pad embankment, HSG D 0.584 58 Meadow, non -grazed, HSG B 0.366 78 Meadow, non -grazed, HSG D 1.251 12 Weighted Average 1251 100.00% Perilous Area To Length Slope Velocity Capacity Description (min) (feet) Wft) (ftlsec) (cfs) 4.1 76 0.0921 0.31 Sheet Flow, Grass:Short n= 0.150 P2= 3.42" 0.4 143 0.0629 5.91 3546 Channel Flow. Araa= 60 sf Penm= 8.5 r= Q.71' n= 0 050 4.5 73 0.0684 0.27 Sheet Pto'vr, Grass: Short n= 0.1=_0 P2= 3.42" 90 292 Total Subcatchment POST-B: POST -DEVELOPED EMBANKiv1ENT DRAINAGE AREA Hydrograph __ _ __1711.27 „SJ__ __ __ __ __ __ __ __ __ __ i _ __ i__..r._i_.-._. ,_ - - - - Trpe II 24-hr 1OMEAR Ralnfa}i-8J52" I, I I I I, , , - 7 ,- -- - - - - ----- -------- - I I I I I I I I - Furlofif lrta=1.25� ac 1------I--'-- --`--'--�-- -- -- -- J Runo#f 1l"olume10:.537 of - - -- - ---"-R;tln.offEYepfh�5�16-" - -- ---- --- --,-------------------------;Flo fen' tli= 9 �I -� -, -- - - - - - Tcr--9i0-min - ' - ----- - - - - - i ;- ,- - , -- I -T--------------,----r-- - _, ,- -- - - - I , I , , I , i B/M Assembly l Pipe Stand Foundation Cells (Pier) 1Pipe Stand Foundation Cells (Spr Ti., In-) 0® MV1470 Gordonsville Substation Type f1 24-hr 10-YEAR Rainfall=5.18" Prepared by SCCM-01 Printed 51115i2018 H'fdr0CAL'D 10.00-f 6 sin 07657 1D 2016 HydroCAD Soft -Nora Solutions LLC Pape 4 Summary for Subcatchment POST -A: POST -DEVELOPED PAD DRAINAGE AREA Runoff = 18.08 cis @ 12.03 hrs, Volume= 1.047 at, Depth= 3.14" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Span= 1 00-48.00 hrs, dt= 0 01 hrs Type 11 24-hr 10-YEAR Rainfall=5.18" • Area (ac) CN Description 1.946 85 Substation Pad, HSG B 0,582 91 Substation Pad, HSG D 0.911 58 Meadow, non -grazed, HSG B 0,041 73 Meadow, non -grazed, HSG D 0 056 55 Woods, Good, HSG B 0 292 98 Impervious, HSG B 0 167 98 Impervious, HSG 0 3,995 8't `Netghtsd Average 3,536 88-51% Pervious Area 0 459 11.491,,6 Impervious Area To Length Slope Velocity Capacity Descripron (min) (feet) (Nfl) (ftlsec) (cfs) 9.3 150 00466 0.27 Sheet Flow, Grass: Short n= 0.150 P2= 3.42" 0.5 37 0 0309 3.57 Shallow Concentrated Flow, Paved Kv= 20.3 fps 1.0 221 0.0316 3.61 Shallow Concentrated Flow, Paved Kv= 20.3 fps 09 123 0 1079 2.30 Shallow Concentrated Flow, Short Grass Pasture Kv= 7.0 fps 117 591 Total POST -DEVELOPED 100-YEAR ROUTING NIV1470 Gordonsville Substation Type 11 24-hr 100-YEAR Rainfall=8-52" Prepared by SCCPat-01 Printed 511512018 HydroCADGD 10.00-16 sin 07657 r7 2016 HydroCAD Software Soluuons LLC Page 9 Summary for Pond ED: ENERGY DISSIPATOR Inflow Area = 3.995 ac, 1 1.49 / Impervious, Inflow Depth = 623" for 100-YEAR event Inflow = 3300 cfs rr 12 06 ttfs. Volume= 2 076 of a 9 � I - a _ - _ r 1 7 nrs /olume- 2.068 af. Att_n G,v La - 0.1 min Outflow 3_.99 cfs f<? _ 4 g Primary = 32 99 cfs @12.07 nrs, Voiume= 2.068 of Routing by Dyn-Stor-Ind method, Time Span= 1.00-48.00 h(s, dt= 0.0i hrs Peak Elev= 496 34' @ 12 07 hrs SurfArea= 922 sf Storage= 639 cf Plug -Row detention time= 6.0 min calculated for 2.068 of (100% of inflow) Center -of -Mass det. time= 2.5 mtrt ( 930.6 - 928.1 ) Volume invert Avail.Slofage Storage Description #1 495.00' 1,244 of Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf Area Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 495.00 80 0 0 436.00 616 348 348 496 17 922 131 479 497.00 922 765 1,244 Device Routing Invert Outlet Devices RI Primary 496.00' 50.0' Io11g Sharp -Crested Rectangular Weir 2 End Contraceon(s) Primary OutFlow Max=32.96 cfs @' 12.07 hrs HW=496.34' TW=O 00' (Dynamic Tailwaten I'--1=Sharp-Crested Rectangular Weir (Weir Controls 32.96 cfs @_ ) 92 fps) NIV1470 Gordonsville Substation Type 1124-hr 100-YEAR Rainfa11=8.52" Prepared by SCCM-01 Printed 511512019 HydroCADD 10.00-18 sin 07657 D 2016 HydroCAD software Solutions LLC Paqe 15 Summary for Pond SWM: STORMWATER MANAGEMENT FACILITY Inflow Area = 3.995 ac, 11.49% Impervious, Inflow Depth = 6 23" for 100-YEAR event inflow = 34 68 cfs @ 12.03 hrs, Volume= 2.076 of _ - - - OutP.o'w 33.OQ cfs ua 1_06 hrs. Vo;unme- 2.076 at, Ah2n- 54n, Lai 2.1 min Primary = 33 00 cfs @ 12.06 hrs, Voiume= 2.076 of Secondary = 0-00 cfs C3 LOG nrs. Volume= 0.000 of RoutingDr n-. r-Ind method, Ti n= -4 - by / Sto echo me opa 1.G0 3.00 his, dt= 0.01 his Peak Elev= 508.73' t_a 12.06 his Surf.Area= 8,447 sf Storage= 19.752 of PI trim - 7 P 4 u Flo'w detention t 127 min calculated for 2.075 of I901b of intlo',v g ( ) a- Center-of-PAass d hnm. 1 7.8 nun 8.1 4 et. 2 (92 800. ) Volume Invert A'vail.Storoga Storage Descnpton #1 505.10' 31.656 cf Custom Stage Data (Prismatic)Listed below (Recalc) Elevation Surf.Afea Inc.Store Cum.Store (feet) (sq-ft) (cubic -feet) (cubic -feet) 50510 20 0 0 SG6.00 4,330 1,957 1,957 507.00 6,111 5,221 7,178 508.00 7,41-3 6,763 13,941 50900 8,824 8,120 22,060 51TOG 10,368 9,596 31,656 Device Routing Invert Outlet Devices #1 Primary 503.00' 24.0" Round Culvert L= 70.0' RCP, groove and wfneadwall, Ka= 0.200 Intel/ Outlet Invert= 503.00' / 496 17' S= 0.0970- 'r Cc= 0 900 n= 0.012, Flow Area= 3.14 sf ff2 Device 1 505.10' 4.0" Vert. Orifice/Grate C= 0.600 93 Device 1 509.00' 60.0" Horiz.OriflceiGrate C= TfOO Limited to weir flow at low heads 4 Secondary 509.00' 20.0' long x 10.0' breadth Broad -Crested Rectangular Weir Head (feet) 0 20 0 40 0-60 0 80 1.00 1.20 1.40 1.60 Coef.(English) 2.49 236 2.70 269 2.68 2.69 2.67 264 Primary OutFlow Max=32.96 cfs @ 12.06 hrs HW=508.73' TW=496.34' (Dynamic, Tailvrater) L Culvert (Passes 32.96 cfs of 41.13 cfs potential flovi) 2=06ficelGrate (Orifice Controls 0.78 cfs @ 8.96 fps) 3=0rifice/Grate (Weir Controls 32.18 cfs @ 2.80 fps) Secondary OutFlow Max=0.00 cfs @ 1.00 hrs H'N=505.IO' TW=495 00' (Dynamic Tailwater) 4=Broad-Crested Rectangular Weir ( Controls 0 00 cfs) Foundation Cells for Other Typical Structures (Pier) (Spread) Steel Detail & Assembly MV1470 Gordonsville Substation Type It 24-hr W-YEAR Rainfall=5.18" Prepared by SCCPA-01 Printed 5/15J2018 HydroCAP�) 10.00-18 sin 07657 rD 2016 HydroCAD Software Solutions LLC Facie 5 Subcatchment POST -A: POST -DEVELOPED PAD DRAINAGE AREA Hydrograph 3. __�__J,__!__ 15ra �; _�__i__�__i__�__.._ __ __�__,__�__.!__-__-,__-______ -- -- - -,- - -- '- - J--JTy-1N24nhr-- __J_. __ __J__ _J__ _ __ __ _ ___ _ __J_.. J__J__.l__ J__ J__J__J__ -__ - - - - - ----i1¢-XEAR-gainf�ll?5A8,- -- __ __ R66A,Area 3.�9.5-ac__ __3 __ __ __ _ __ _ __ __ _ __ _ _ _ _ .RQn4ff 1/'¢Ig 01--947_0'r- - - u ir - - ----- -- Runoff D1= ih,3.-14,--- I � I I I I I I, p r -- --I,--"-- - - - - - -- - -- - I w11_ n t - 9 , �I I F4 @ h i __J __-__J__ _ __ __ _ __ _____J__J__aT1:..11�7_min_ a , - J I - - - __�Nsa - I J__ _ __ __ __ __ - __ _ __ __ __ _ __ 7 ? _ r, a 1. 11 11 t" 19. M 25 M )'+ ]i 'ti 3d _fl _2 _ - Sa nma in...) Fdwan It MV1470 Gordonsville Substation Type1124-hr 100-YEARRainfall=8.52" Prepared by SCCM-O I Printed 5/15/2018 HydroCAD,D 10.00-18 sin 07657 1D 2016 HydroCAD 53oft,ywe Solutions LLC Paqe 10 Pond ED: ENERGY DISSIPATOR -1 1__+3'(i3H57__ _ __ __ __ ___ __ T __ _ _ ", lolled "-,d--y --t`nfl `w'A`_e 3:9 5'a a - I `I C. - - - .-a1>�-. i .J--1--1 -! ' I r , , e �7 -J--'--'--'-- --'-- - --I'-- _____ ____ _ _ ___________ __________ I F- __ __ _ __, _ __ __ __ __ ___ _ __--- _ .__,__ __ __ _ __ _ , I I ;� - - _ :_ _ I I I I I I . . a- -------------- ---- 2 -- - o- 2 - 5 a t7 t2 11 16 13 29 22 2- 25 23 37 32 34 36 .5 47 12 -= 16 13 Ti.. (ft-1 L _,_,.-I,� _� MV1470 Gordonsville Substation TypeI124-hr 100- YEAR Rainh11=8.52" Prepared by SCCP11-01 Printed 5fi512018 HydroCAD10.00-18 sin 07657 r.,12016 HydroCAD SN*war? Soluuons LLC Pape 16 Pond SWM: STORMWATER MANAGEMENT FACILITY Hydrograph u i il j33 Cf- __ __ -_ T __ _ _ __ _ _ __ __ __ __ _ _ -.I-,-- __ __ __ 3 07 ct __ __ __ _ _ _ __ _ _ __ __ __ _ __ __ __ __ __ inila:v__ - -3.9 61-- }-- -- - - -- - - - -�_ r C_ +i r , 7 - 4 Ir z-- --- - ------ ----- - -- r----- ------ ----- __ 2,2. __1__1__ _.L_ __L-_ ___l__ __1_. i__ L__ L__L____J___,_- __1__1__L__ --,--, -i-r- -r-r -r-r-,--,--: -r , -'r-r-1--',`,--T--T--i-- . , , , , , : , , , I , , , 15 . - r._1__,__ __r_.,_..l__T..1__i__1__T__ T__ r__1_1__,__Y__T__T_-T__ , r , , , T T r �r-----�--;--;--4--,--' I I I I I 12.- __ __Y__+__T__ __ _r_y__y__T__T__+__'__ pj_1__._.{________ _____________ 1__y_.y_ _,.__,__r__r_y__1__y__+__{__T__ 3 _ __ _ _ _ __ _ _ _ __ _ _ __ _ - - .- - - - - - - - = J , , ! _ 7CaGs __ __ _.. f __ _ __'_ __ __ __ _ __ _-,--,--I--,-- I _ __ __ __ __ __ __ 6 . ,h i2 ,a 16 4 2n ,a ,+ ,_% � 3n 1, - 1n 1 V.. (.Dora) ---m^ "^-Co.pal T, . an ary Gecsyntec 1--'* C 01)SLllt£11)tS MVi 470 Gordonsville Substation Type 11 24-hr W-YEAR Rainfall=5. f 8" Prepared by SCCM-01 Printed 5/1512018 HYdroCAD.� 10.00-16 sin 07357 1D 2016 HydroCAD Software Soluuons LLC Pans 6 Summary for Subcatchment POST.B: POST.DEVELOPED EMBANKMENT DRAINAGE AREA Runoff = 4A8 cfs @ 12.01 hrs, Voiume= 0244 af, Depth= 2.34" 7 ? r - - - Rwloff U' SCS TR 0 m-lhoJ H-SC. 2t ht N Tim an- 48. hr / , U S, N 4 ed C e $p I.00 00 hrs, dt- 0.01 s Type 11 24-hr 10 YEAR Rainfall=5.18" Area (ac) CN Description 0.056 85 Riprap lined pad embankment, HSG B 0.245 91 Riprap lined pad embankment, HSG D 0 584 58 Meadow, non -grazed, HSG B 0366 78 Meadow, non -grazed, HSG 0 1.251 72 Weighted Average 1.251 100 000 Perilous Area To Length Slope Velocity Capacity Descnption (min) (feet) (ftlft) (iys-0 (cfs) 4A 76 0.0921 0.31 Sheet Flow, Grass: Short n= 0 150 P2= 3.42" 0.4 143 04629 Sill 3546 Channel Flow, Area= 6.0 sf Penm- 8 5' r= 0.71' n= 0.050 4 5 73 00684 027 Sheet Flow, crass: Shon n=0AW P2= 3.42" 9.0 292 Total Subcatchment POST-B: POST -DEVELOPED EMBANKMENT DRAINAGE AREA Hydrograph -i j 1.5Ss - --,- - - ; ;Type I1i24-tir - -- - - ---,--,IQ--SEAR R•ainf�ll=9.fi8r`- iR6noff Area-1.251'nc - - -- - - - '- ----,RLnpffiVglOMe�0:244af- RLinaffiDepthei2.M' - ---Fjt:iw1enclt}i_292' I I I : Tc-9'0 loin N-7; I , I I , ffJJ I , I . � J,�:'. P_,T^•�,+I'+T1 , 1 n a 11. 1+ a ,6 to ,n . m *, .1 s5 35 _n 1, � in _. Tint. (half.) � NIV11470 Gordonsville Substation Type /124-hr 100-YEAR Rainfall=8.52" Prepared by SCCPA-01 Printed 5l15/2018 HydroCAD-D 10.00-18 21n 07657 ID 2016 HydroCAD Software solutions LLC Page 1 1 Summary for Pond OUT: POST -DEVELOPED OUTFALL 1 BOUNDARY [40] Hint Not Described (Outflow=Inflow) Inflow Area _ 5.946 .ar 8.75% Impervious, Inflow � t1 - 596" for 00-YEAR event Inflow = 412 cfs @ 13.45 nrs, Volume= 2.605 of Primary = 41 52 cfs a 12.05 hrs, Volume= 2.605 af, Atten= G%, Lag= 0.0 min Routing by Dyn-Star-ind method, Time Span= 1.00-48.00 hrs, dt= 0.01 hrs Pond OUT: POST -DEVELOPED OUTFALL 1 BOUNDARY Hydrograph 4- __ _---I-- __ __ 41'25gs'__ __ __r__ _ __ __ __ __ __ __ __ __ __ -7- I I + v , , .- 12 - --, - - -- -- - -- -- - -- - -- __ -- - - *-- - -anmary 3.3_1-- -- -- -- -- -- -- -- -- -frill-qwv Are 5j246Tap-- ,1 . - - - - - - - 32-1--]--'--`--i__ --1--{--1--'--'--- ---`--L--L--t- -----i---L---`-- 3 '' '--' -' -' ;, i - - - - - 23. _ __ __ __ _ _ __ _ _ __ _ __ __ __ _ _ _ , __ __ v2c22, 1 _--_-1--i__ - - - - - T-_i. - - - -- X1_ __ __ _ _ _ _ _ __ __'__ __ __ __ _____ __4__4._�__ _ __ 7., , , + , r : + , r + ra ; , , -, ---- -, - - - ,- - ---r - 1s----- ---- - --1----- -- - -- - - - -- -- -- --`-- - -- -- ,- - - - - - - - - - -- - {7 - -- , - --,-- -i--r r-- __ -- - - -- - -- -- -.- r- i-- .. 71------ - -- --- ----- ------ - __r__---,----- - --:-- 2 4 6 a 17 12 u 15 le _. 2a 37 32 34 sa 3a 12 _, .n 43 ilia (hors) ®11i1rlloil Energy& - MA? 1,01111418 STORMWATER MANAGEMENT POST -DEVELOPED 10-YEAR AND 10P� YEAR ROUTING GORDONSVILLE SUBSTATION EXPANSION ALBEMARLE COUNTY, VIRGINIA Designed b Approvals Approvals Nome GEO TER Cod File Name 0000000a.c PLOTTED: sssssssassaSY71ME Dote Project No. Sheet No. 06/20/18 99-2523 06/20/18 Scale 19 OF 2 0 N.T.S. B/M No. Revisions Ign Drawing No. W I- tN 64 M MI YI a 11011 N C 64 W °r5ai 'RFz n1'-Li M J Q. 64 0 1 2 3 4 5 1a 7 8 9 10 11 12 L ti a 00 a 4)m E f z CD "a U U m '' U O Q z UCo Revisions sUSERNAMEs OPEN CHANNEL DRAINAGE AREAS i 4101MAENT ._..-+ *=`- - = a.�._.._.._.._ .600.00'.... -y j� "Fro❑ r�lw • ...- 53?' 3T20 E FO(Me ■I IONII OUTFALL I BOUNDARY DITCH #1 60' 0 60' 120' OUALL 1 1. G. , �,, - BOUNDARY l' i SCALE �4 feet WED caADE �r rt'ny IlvoDs 1 NT alive 1 E T00ROD I AGT 0 AG4 b FO{MMD ' ;i 0 D T b 1 0 ��GdfOt�> � 1 '$'hd o 0 0' a o o: o T ai�r'A i e DITCH 2A '10YR CAPACITY MV1470 Gordonsville Substation Type1124-hr 10-YEARRarnW=5.18" Prepared by SCCM-01 Printed 5/1612018 HydroCADO 10.00-18 1111111107657 02016 HVOroCAD Software SolubM LLC Page 3 Summary for Subcatchment 3S: DtTCH 2A Runoff = 4.95 cfs @ 11.96 his, Volume= 0.231 af, Depth= 3,53" Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Sp2n=1.00-48.00 hrs, dt= 0.01 his Type 1124-hr 1G-YEAR Rainfall=5.18" Area lsn CN Description 34,201 65 Gravel roads, HSG B 34,201 100.00% Pervious Area Tc Length Slope Velocity Capacity Description (min) (feet) (ft/ft) (fUsec) (cfs) 50 Direct Entry. Subcatchment 3S: DITCH 2A I,yul„bl.pr, 1 r B------------------------- r l l l l I I I I I I I I I I I I 1 I i i i 1 i i i 1112 l r l 1 1 1 1 I, 1 1 I 1 1 I I I 1 1 I I I � j l � ;,rip A � 41 IH I I R l� T� ituili f Arisal din iOi if 1 I r 1 I r .Y` RtNpf�y- W 61�p,�3'6-s,- -�61� 6 I �tlndlf'"pjh,53 3. I II11 I II I III I I 1 I 1 1 1 1 I I I 1 I I I 1 i 1 1 IIIII IIIIII IIIII t i--;--;--;--;----;--;--;--T--;--;--;--;--;--;--;--;--T-- - 1 i i i CN-1 I I I 1 I 1 I 11 I I i I I I 1 I I I 1 1 1 1 1 1 1 I I I I I I I I I I I I I I I I I i i i i i i i i i i i i i l l l l l l l l 2 4 6 Al M 12 14 16 18 20 21 ?/ 26 24 60 32 24 36 35 do @ ad N 4i Typical Drawingli Library Location Cell Name Info --motion 11 III Mprlmhoot for Tdonader CNrad p#Vft SU 10Yr Frklislt YNei Sats6 Few MamaBp Fpn6ia Normal Depth input Data Rougrsess Coeft-t 0.000 chanet Skpt 001700 wR Left S40 Sipe 2.00 RIR (H.V) Right Side Slope 2.00 ta(H:y) Dahlia e. 4a6 R4s Normal Depth 1.03 t Flow Area 2.14 V Waded Perimeter 4.82 t Hyatiulc Radius 0.46 1t Top Wolin 4,13 ! Crit t Depth 082 It Cntrat Slope 0.06880 rA 'Veloc,ty 2.32 1W Velocity Hear 0.08 ! Speafic Energy IIA2 R Froude Number 0.57 Flow Type SuhaiBdel G'.'F Input Data w..,. 0-5beam Depth GAO It Len9tr 0.00 R Number Cff�Steps 0 : GVFOutpu.tDab' - Upstream Cloth 0.00 R Profite Destnpt- Profile Head- 0.00 R Dow„sawra VtloCity Inlinty, is Upstream W6elilr In** ws Normal Dep1h 1.03 R Cw6i®I 011p0l 0.92 R ChwAdAlfte 0:017M RM C.kw slpe 0.05880 ftm Berney Sysl.me. Inc. H-UdM.m )de ScaElMl FNtet3.tar V'61(SELECT.W"1110BA1.01.091 SMOM114:21:UPM 2751emora company D ar. Salle 20C W Watyt n CT 06'£5 J,--1-1 CS-755-1668 Page I on I B/M Assembly I Pipe Stand Foundation Cells (Pier) (Pipe Stand Foundation Cells (Spr DITCH 110YR CAPACITY MV1470 Gordonsville Substation Type ►t24-hit 104EARRainfa►1=5.18- Prepared try S1 l t 7 Printed 51ipage WOFkihe" fOr Trfsmatill r C1 (meal - DItCh #1 - 10Yr si HydroC A Cv I CI.'7;,-I b srn 07657 02016 MvdroCAD SoRWare Sduliolla LLC page 1 I Summary for Subcatchment 1 S: DITCH 1 Frlmon Mebrod Malnir0 FOIR6ia Runoff = 9.11 cfs @ 11.96 hrs. Volume= 0-447 af, Depth= 4.16" slain Per NaaW DMI Runoff by SCS TR-20 method, UH=SCS, Weighted-CN. Time Span= 1.00-48.00 hrs, dt= 0.01 his Input � - " • _ Tl' Type ti 24-hr 10-YEAR Ra4hfall=5.18" F..9 - ccieffic-lit 111.0f3 Area (90 CN Description Channel Stage 0.02E00 RIB 56,160 91 Gravel roads, HSG D Left Sde Scope ZOO wt (N.V) 56,160 100-00% PeMaus Area Right Sloe rope 2.110 wit OM Disch.'Lle JIM R'h Tc Length Slope Velocity Capacity Description Results-, .. (min) (feet) (ftHtfT/s ) (ec) (cls) 5.0 Direct Entry. Normal Depth 0.73 t Subcatchment 1S: DITCH 1 Flow Area 1.08 r Weled Penme*r 320 R I 1 I 1 1 I 1 1 I 1 I 1 I i i i l i l l i i typiiiiii i i i 1 1 1 Ili; i ;III }1 r I I �I,J , yy!a i S fF.Wo oar I` -r �• _ 1 y�{INe4rr, V.I�`Y�{ i-61 RY6l 1 .Ir {{6 1 I I 1 r I I I 1 I I 1 I 1 1 1 1 I I I I I I I l l l l l l r l l l l I J-_J--�-.-f--1-- �J--•�--J--1--J•-J--J_-J--J--J-_•1--J--T�_'1-•�•••3' - 1I I 1 1 I I 1 1 1 1 1 1 1 I I I I I I 1 I 1 I I I I I I I 1 I I I I I I 1 I I I I _ _J__-__J__�__J__J__J__J__J_ I I 1 1 I I I 1 I I I I 1 1 1 I I r I I I I I I I I I I I I I I I I I I I I I I I I I I r I I 1 I I 1 I 1 1 I I I I 1 1 I I 1 1 1 I HytlraWile Radius 033 R Top WAh 2.02 ! Char l Depth US t crttat Slope 0,00354 Rm Velocity 8.58 Ms Velocity Heap 1-14 R Speaf. Energy 1.87 R Fro1Me Number 2.5111 Flow Type superawor GVF Input Data, Down"M o6pll 000 R Lev& 0.00 t Nua4rors16p6 0 GVF Output Vpstream Ce- th 0.00 R Profile Descnphon Profile Head- 0.00 R Downstream Veioaty, 106r16y Ms Upstream'JNocty i11rlb % Normal Depth 0.13 t Cril Depth raft ft ChanneB Slope 0.02600 MR cm,cal Slope 0.00354 tFA Bentley System.. Inc. H-tad M EthodB Soeshhefllww s%r'V81;SELECTserl8811 I08110'.391 SM60164.21:00 PM 27 31.morre Company Dn,. Suh. 20C W Wat.rtown. CT 06755 J,-- - I N3- 5-1956 Page l or I DITCH 3 10YR CAPACITY MV1470 Gordonsville Substation Type,1124-hr 10-YEARRainia11=5.f8- PrYpared by SCCM-0 I Printed 511612018 Mlid10CADD 10.00-18 IM D7-;E7 - 7lt -!;dr�software Solubom iLLC Page t Summary for Subcatchment 2S: DITCH 3 Runoff = 0,27 cfs @ 11.97 his, Volume= 0 013 at, Depth= 1.2r Runoff by SCS TR-20 method, UH=SCS, Weighted-CN, Time Spar= 1.00.48.00 hits, dt= 0.01 his Type 11 24-hr 10-YEAR Rainfall=5.18" Area (st) CN Description 5,173 58 Meadow, non -grazed, HSG B 5,173 100-00% Pervious Area Te Length Slope Velocity Capacity Descnpticn (min) (feet) (fUR) (ft/sec) (cfs) 5.0 Direct Entry. Subcatchment 2S: DITCH 3 �. I I I ! i__r__r__�____r__r__r__r__T_�__�__r I I I l l l l 4 IIII IIIIII 2=2 22ITY6WfTTTri'a2- I 1 1 I I I I I 11 1 1 1 1 1 1 I I I I I I I I I I I I I I I I Rtti �tr6P-�•�� -'T--r-_r.-r--r--r--m--r-----r�-�1�p-_r///:��- �lT TTT I I I I I I 1 I I .12 1 � rT� 11 1 1 1 I I l r l l l l l l 6a I 11 r 1 1 I_ I I I I I I I I I 1 I I I I I I 1 1 1 v*'T58 I I r - - L � J- J - '- ' -J 1 1 1 1 1 1 1 1 I I I I I 1 I I I I I 1 1 1 1 I I I I I I I I I I 1 1 I I - 1 y2 7____Jr__T_._ n__r__T__r__T__L_______ i__J___r__i__r__i I I 1 I I It I I 1 I I 1 I I 1 1 I 1 2 4 6 6 10 t2 l416 1! 2c 22 V 25 n 30 U M n a i! 4i 411 4 1 Time Munl DITCH 26 10YR CAPACITY MV1470 Gordonsville Substation Typ&924-hr 10-YEARRain1a11=5.18- nya�� r l I I I I I I I I I I I i I i i E4ii lkt i i i i i i i i i ' i 111:2d{6-ter t __.1____y__y__+__.r,__+__+__1��1��l�Ll�.�w11i�N_ ituitili f Al6ar4 tit 8f I I I I I r 1 I I 1 1 I I I I I I I I I .............. i 0"ff b y h, .:i3ln I I I 4*g 16 rllll II II I 111 I I III I I 1 I I I I I 1 I I I I I I I I 1 I I I i i i i i i i i i i i i i i l i l l l l l L.=J Workshoot for Tislwzoi" Cha11DN - Dftoh s3 -10Yr PMW Description Ill it ;,all 4,cbon Meprod Marl'-Fwe6ia S.W. For late 06p6 - Rnug.^""a•ss CoelReiM QOSO Channel Slope 0.06100 we LeRSde Slope 2.00 slitti ), Right S- Slope 2.00 R/0(H:V) Bottum Width 3.00 it Discharge 027 RVs Normal Depth OM t Flow Area 020 r Welled Petimetef 32D t Hyaaulo Radius time it Top WAh 320 R Crotal Depth Gas R Critical She 0.00421 10 Velocity 1.33 ws Velocity Head 0.03 R Speafic Energy 0.00 R Fralde Number OAK Flow Type Suhmypy Gar . Downstream oepih OaD t -r OAO t Number-C1 Steps 0 GVF Output Upstream Deoth OAS f Profle Desorption Profile Headloss 0.011 R Dnwirstrearl Velociry In" Rh Upstream verocty hT.Ay ws Normal Depel O.D6 R CmInal Depth, DOG ft Channel Slope 0,08190 Rat Berney Syntema, 81C, Haestld MIAttode SCLNa¢6WMMast.r V'81 ISELECTsene. l l IDB. 11,01,031 S11V"II a:21: 18 Pel 27 SHmorle Co-mpany Drive Surte 200 W Watwtowm CT 0055 JS- -1 203-755-1646 Fag. I or 2 Hyarauli Radius 0.47 t Top WAh 420 R cm,alt Depth Gan ft Crnoal Sipe 01018 It" Velocity 2.78 t. Velocity Heap 0,12 ft Spe liio Energy 1.17 R Frcude Number 0.88 Flow Type sub~ GVF Input Dag#, Downstream Depth Oat It Length O.W it Number of Steps 0 GVF Output Data K Upstream Ceelh 0.00 R Pro51e Desorption profile Headloss 0.00 It Dowrsveam Vei-y I *ft ws Upstream Veioety "ft ws Normal Depth 1-05 t Chi - Depth 0.90 R Channel Sipe D.ONOG to Critical Stye 0.08818 wR BeNMy Syetame [Mt. Haestad Me -Mode Sr8Nd1ep6NtMaetbr V81(S ELECT1. "I 1108. 1101.031 51 WN 181 21: 50 PM 27 SI-.. CumpSny Ddw Suh.200 W W'aterto n, CT BC755 J8:-1-201-755-1656 Page I or I Foundation Cells for Other Typical Structures Steel Detail & Assembly (Pier) (Spread) Geosynlec© consultants P,or � ssiontnl Engineer-' APPI-Oval ,iT H Op pui v YLY,aCLA1R KE F. 1ic.f/No. 0395 Q 0� .00 Dominion WOO Energy® -TA' loll 11-4 STORMWATER MANAGEMENT OPEN CHANNELS GORDONSVILLE SUBSTATION EXPANSION ALBEMARLE COUNTY, VIRGINIA Nome Date Project No. Sheet No. ed by: GEO 06/20/18 99-2523 rals TER 06/20/18 Scale 20 OF 20 cols N.T.S. B/M No. Revisions Cod File Nome 0000000a.d PLOTTED: sss6868s666SYTIME // // // // 1/ // // W H } in M M M M U1 64 M 64 M C 64 W 0,6 j �LLJZ W M 0.. M 3 4 5 'It- 7 8 9 10 11 12 � s Via�, �-----W VEPOO 100' R/Ki \ LAWSON, ALBERT J ESTATE y DB 78PG 6758 M/XED DEED 9001<, PAGE (W994, 704), TRANSACTION S�y� \WOODS #200379121 TAX MAP P7-1 /B s ZONED RURAL AREAS DI STRICT, RA - - MAGISTERIAL LWTR/CT RIVANNA SO / O / o� - U3E_ VACANT RESIDENTIAL LAND 1 AAEA- _ 101.71 AC i �ONU ENT x -�-x--i/-/x�x x x x x x-x-x xc-x x-x�x-x x xy--x-x-x-x- �`-x x-x-x-x-x C � x MONUMENT \ _ FOUND \ _ \ _ ---- � \ - 1 �x i x �- \, WOODS x \, 4X4 F OF \\\ \ \ -\ \ WOODEN x x HAtr L1N fTN �TWP•�x� OSTx -x- \- .- \\ \ ( EDIGEBERM 1.5 TALL TYP \ l -- x CONC. \a Cr \ \ \ 1 \ \ _- x 515 l -� OU TIONS "� { \ \ \ , `t \\ \ �\ \ /v I `- M/XED \ I R \ \ _\ \ I CONC. �. \ \ � \ T \ WOODS x J I \ q I FOUNDAT/ NS TX IPAD (Ty x / l \ ,TOC=51683 0 0 \,� I x w0 0 0 , 0 ° p \` \ \ \ } I \ II x \ \\ \ } \ Z GR ,P I Z v \ v B LLARD TYP OUND T iUG , \ \ \ \ O D oM XEI \ \ \ v .E / o x x L GH� \ I9299.83 0 0 o x I I I \ \ \ \� I BUSH I z \ = o 11563006. 1 d ° o U TA-1 ON l © i I BASE E ` \ \ \ ~ \ W x x SJ254eVJ7 p x \ 0 0 o X � \ \ \ � ° HH=516.99 GROUND MAT MIXED o STR192 11-7 1 G OU D 67292 cb WOODS / x , ° ° f M T -. 1156 - \ MNUA ENTI I ( ) GROUN GRIIUND D EC 02 %ALE. \ \ lI FOU ( x MATc[� o M T [� x 7kl ION F O BAS /N cS \ UN MAT o `o !O� �F �- VP GROa cQ 2 `X , �\ 2017 J �GRO D� � m O �y 1642 C•\ SAT I/N �'E GROUND I / C � \ � �. � -._--- , �--j �_ , j PEPCO 1.20 R W 10. SPOT SHOTS INSIDE SUBSTATION TAKEN AT DIRT I 0. -o� o o MAT / I I \ \ `` I \ BC• / GRADE. AVERAGE DEPTH OF GRAVEL IS 4" I // / i ° O I O O \ \\ \ __ �� p�H - - ®( 517 PG' S) 0, TX / \ \ - (PARCEL 113> \ \ 11. NOT ALL IMPROVEMENTS INS/DE OF SUBSTATION \ FENCE SHOWN. , o 0 0 o I /16AIT \ 0�, ° ° ° j ° ' °� � I' l II I o 0 0 0 12. A TITLE REPORT WAS NOT x GROU FURNISHED FOR THIS \ x - / I A o SURVEY. THEREFORE, NOT ALL EASEMENTS OF \ ( M o 0 0 o o RECORD MAY BE SHOWN. \L /�/ III ;� ° - / s x 1 I 4A GRObND \ \ L 13. SUBSTATION BASELINES WERE CALCULATED FROM ( C I ( WOOD N M.4T EDG OF BERM 5' G `� \ C• -� I --•�C' FOUND MONUMENTAT/ON AND DRAWING ENT/TLED LEGEND \ I LOS � x 1 x > " OCAT/ON PLAN GORDONSVILLE SUBSTATION" \ I x x i \ I I\ i ► - HAVING DRAWING NO. 0577-129. LL' = PROPERTY LINE x i WOODEN I I9 EN x R/W = RIGHT-OF-WAY I t�� - \ , O GR "' \ ST / 1'� = 555 \ 0� ,O"YH OF l� ' Gl onathan D. Behr Lic.No. 2668 NOI-TS:• 1. ALL UNDERGROUND UTILITY SERVICE LINES SHOWN HEREON WERE OBTAINED TO OUAL/TY LEVEL 9 ACCURACY STANDARDS BY ACCUMARK, INC. AND PRESENTED ON A DRAWING DATED APR/L 11, 2017 (PROJECT #17-283). NO GUARANTEE /S MADE OR IMPL/ED THAT ALL UTILITIES ARE SHOWN. THE CONTRACTOR SHALL VERIFY THE LOCATION, SIZES AND DEPTH OF ALL UNDERGROUND UTILITIES PRIOR TO ANY CONSTRUCT/ON 2. VERTICAL DATUM /S BASED ON NAVD88. ADD 0.84' TO ELEVATIONS SHOWN TO MATCH ELEVATIONS SHOWN ON VEPCO TOPOGRAPHICAL MAP OF GORDONSVILLE- SUBSTATION, DRAWING NO. 2-557-113, 2-557-114, AND 2-557-115., AND MAP ENTITLED "GRADING PLAN, GORDONSVILLE SUBSTATION" DATED 2-7-79, HAVING MAP NO. 2-577-05. 3. HORIZONTAL DATUM /S BASED ON VA. STATE PLANE NAD83, NORTH ZONE. 4. CONTOUR INTERVAL = I' 5. EXISTING SITE ZONE IS SECTION 10, RURAL AREAS DISTRICT, RA. 6. BUILDING SETBACK REQUIREMENTS - MINIMUM FRONTAGE = 250' EX/STING PUBLIC ROAD, /50' INTERNAL PUBLIC OR PRIVATE ROAD MINIMUM YARD = FRONT (EXISTING PUBLIC ROAD) = 75' (EXISTING PRIVATE ROAD) = 25' SIDE = 25' REAR = 35' MAX/MUM STRUCTURE HEIGHT = 35' SEE COUNTY OF ALREMARLE ZONING REOU/REMENTS FOR ANY ADDITIONAL SITE REGULATIONS. 7. PROPERTY LINES SHOWN HEREON MERE COMPILED FROM FIELD FOUND EVIDENCE AND REFERENCED DEEDS AND PLATS 8. THIS PROPERTY IS LOCATED /N ZONE X (AREA DETERMINED TO 9E OUTSIDE THE 0.29 ANNUAL CHANCE FLOOD) AS DEFINED BY THE FEDERAL EMERGENCY MANAGEMENT AGENCY (FEMA), FIRM MAP Z51003CO200D, _EFFECTIVE DATE- FEBRUARY 4, 2005. 9. TOPOGRAPHIC SURVEY PERFORMED BY BURGESS & NIPLE, INC. ON FEBRUARY 27 - ti1ARCH 6, O�H = OVcRHEAO j �' I-i�A6�. __l - �' ///--_.��`'- �. _" �` �- .-••,, ./ � \ TOC = TOP OF CONCRETE x TW = TOP OF WAL II - \ \ \ -\ -- \ t \ \ \ \ \ \` x L\ x = SPOT ELEVATION 9 DIRT GRADE x �� \` I I I s _____ I / � �.- - -- - -� � o MIXED \ BOLLARD x - _ X -'� \ �- -- - \ TELEPHONE PED '`Q I / ROD 0 - MAILBOX /c i� / 4 FOUNK © ELEC J8OX C HH = HAND HOLE � "I\x \ = CONIFEROUS TREE O / WOODS \ \�--- __ _- `� /EL ETR/� & ER COPANY \ \ \ I \ 7i5 TO NORTHERLY R/W _0/ _ w MED/Ukr 9RUS 00R 5V%LE SU nON - \ \ \\\ { - \s� L/NE OF GORDONSVILLE ROAD j' = POWER POLE x� & TAX MAP J07z-11A OV OK-,-51 PA 4 4 MONO �- ER DEED BO � 3 \ - _ GUY WIRE I I ,..,-- Z I / / �, \ _ '- 520�/ x / lZ9B fRAL AREAS /STRt RA - --E I MAGISTERIAL�/STR/C�/ ANNA\ 510 x -x -x - FENCE I / / / / U` Y46A11/T REQDENT/AL NND / / AREA = 90"C_- \ \ \ x EDGE OF WOODS v y GUTT - - = OVERHEAD ELEC. x I / /W / / N E _� _ \ /� URB� Ujr 640) / SETBACK L/NE I / / / \ �ETBA L� / /- '(STATTE R - ix LOVERS / LE WIOTN_ -- �a n ��a� EO/ = END OF /NFORMAT/ON / --+ X VAR�� Professional Engineer Approval E = UNDERGROUND ELECTRIC T = UNDERGROUND TELEPHONE " MONUMENT FO = R0,0 UNDE GROUND FIBER T/C FOUND THIS TOPOGRAPHIC SURVEY WAS COMPLETED UNDER THE DIRECT AND RESPONSIBLE z CHARGE OF JONATHAN D. 9EHR FROM AN ACTUAL GROUND SURVEY MADE UNDER MY $' DIRECT SUPERVISION- THAT THE IMAGERY AND/OR ORIGINAL DATA WAS OBTAINED THE WEEKS OF IANUARY 23 & 30, 2017 AND THAT THIS MAP MEETS MINIMUM ACCURACY i SCALE STANDARDS UN ESS OTHERWISE NOTED I G-, 40 80 VICIN17Y MAP S AZE 1 " = 000' �f CON T OL•° � - GORDONI USGS BRASS DISK NORTH = 6729309.02 EAST = 11562748.48 ELEVATION = 524.50 - GORDONI AZ PIPE WITH CAP FOUND NORTH = 6728370.83 EAST = 11563600.52 ELEVATION = 469.59 - SN-105 TRAVERSE NAIL SET NORTH = 6729224.46 EAST = 11562886.41 ELEVAT/ON = 517.24 - 9N-108 TRAVERSE NAIL SET NORTH = 6729498.24 EAST = 11563068.20 ELEVATION = 520.22 1 - TSM FOUND TOP OF CONCRETE MONUMENT ELEVATION = 508.75 (NA VD 88) T9M SET CHISEL SQUARE ON N. W CORNER TX. PAD ELEVATION = 516.83 (NAVD 88) d3 - TBM SET CHISEL SQUARE ON N. W CORNER TX. PAD ELEVATION = 517. I3 (NA VD 88) • fA? to lot I24t8 ® W® ' TOPOGRAPHIC SURVEY OF GORDONSVILLE Sw x: • RIVANNA DISTRICT ALBEMARLE COUNTY, ,p , IA MUM • 'mil Drawing aR Information._. 1 it _ , Assembly ►� Fs•• ' •:•6 aii'a' •�.Typical Dotal & Assembly____ wr-11112V70• d 1' xv�zt�x,vS rs. 55590