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HomeMy WebLinkAboutWPO201700019 Plan - VSMP WPO VSMP 2018-05-30© GRIMM AND PARKER, P.C. 2014 I I i T a Le, A I 10 A 12 181 17 16 151 14I 13 12 11 10 9 gl 7 6 5 41 31 21 6[6 v SITE DATA: ENGINEER: TIMMONS GROUP 608 PRESTON AVENUE, SUITE 200 CHARLOTTESVILLE, VA 22903 TELEPHONE: 434-327-1688 CONTACT: CRAIG KOTARSKI, P.E. CRAIG.KOTARSKI@TIMMONS.COM TAX MAP PARCEL: 13000-00-00-025PO LIMITS OF DISTURBANCE: 0.61 ACRES SETBACK: 75' FRONT 25' SIDE 35' REAR ZONING: RA MAGISTERIAL DISTRICT: SCOTTSVILLE SOURCE OF BOUNDARY AND TOPOGRAPHY: TIMMONS GROUP. 28 IMPERIAL DRIVE STAUNTON, VA 24401 (540)-885-0786 SOURCE TOPOGRAPHY: TIMMONS GROUP, DEC 13, 2016 BENCHMARK: BENCHMARK: LOCATED EAST OF THE CORNER OF THE EXISTING BUILDING AND NORTH OF THE ASPHALT PARKING LOT. TBM BRIDGE SPIKE' ELEVATION= 400.14' DATUM: HORIZONTAL: NAD83 VIRGINIA STATE GRID SOUTH ZONE VERTICAL: NAVD88 ESTABLISHED THROUGH LEICA SMARTNET SITE AREA: 14.7 ACRES PROPOSED USES: ADMINISTRATIVE AND SECURITY IMPROVEMENTS BUILDING AREA: 850 S.F. ADDITIONS & 1,000 S.F. INTERIOR RENOVATIONS NEW IMPERVIOUS AREA (WITHIN PROJECT LIMITS): 0.12 ACRES PARKING COUNT: PRE -DEVELOPMENT TOTAL: 45 SPACES PARKING SPACES REMOVED: 1 SPACES PARKING SPACES ADDED: 27 SPACES POST -DEVELOPMENT TOTAL: 71 SPACES WETLAND IMPACTS: NONE WATER SUPPLY: EX. ONSITE WELL SANITARY SEWER: EXISTING ONSITE DRAINFIELD DRAINAGE DISTRICT: MIDDLE JAMES -BUFFALO THERE ARE NO CRITICAL SLOPES LOCATED WITHIN THE PROJECT LIMITS. THERE ARE NO CONSTRUCTION ACTIVITIES PROPOSED WITHIN THE 100 -YR FLOODPLAIN. THE SITE IS NOT LOCATED IN A WATER SUPPLY PROTECTION DISTRICT. 161 151 14 Blip [I] 0M 147L i i; 1220 A ENDM EN 1141k, M TTOWPO2017000 tp COUNTY OF ALBEMARLE, VIRGINIA SCOTTSVILLE DISTRICT 4/3/2017 .... . ..... VICINITY MAP SCALE 111=2000' OWNER: ALBEMARLE COUNTY SCHOOL BOARD 401 MCINTIRE RD CHARLOTTESVILLE, VA 22902 CONTACT: JOE LETTERI TELEPHONE: (434) 975-9340 FAX: (434) 975-9341 ENGINEER OF RECORD: TIMMONS GROUP 608 PRESTON AVENUE, SUITE 200 CHARLOTTESVILLE, VA 22903 CONTACT: CRAIG KOTARSKI, P.E. TELEPHONE: 434-327-1688 131 121 ill 101 Sheet List Table Sheet Number Sheet Title CO.0 COVER C1.0 NOTES AND DETAILS C1.1 NOTES AND DETAILS C2.0 EXISTING CONDITIONS AND DEMO PLAN C3.0 ESC NOTES AND DETAILS C3.1 ESC PLAN PHASE 1 C12 ESC PLAN PHASE 2 G4.0 LAYQU. PI A01 C5.0 GRADING AND DRAINAGE PLAN C6.0 SWM PLAN L1.0 LANDSGARE PLAN TOTAL SHEETS = 9 81 71 61 51 41 APPROVED by the Albemarle County Community Development Department Date5 File —j,L_c)i 21 1 �0 CRATG W J, RS 1KJ. Licn b;c402048507 he 4. W, 0 " I • go ce • ox Uj • ZEr LU 00z 0 0 C-3 UA C/3 it on o cf >3 I C0.0 4/3117 C GRIMM AND PARKER, P.C. 2014 1 C-3 UA C/3 it cf >3 ZCZ3 C> CJS C--:) C/3 � Q c:) Lu Lu75-- Lu Lu I CY3 111-- LuUj = cz..) LU w LJJ <Z) 0 112 L� U DATE DESCRIPTION 4/3/2017 REVISION 1/13/2017 REVISION 8/1/2017 REVISION 9/6/2017 REVISION 00/20181 REVISION 5/3/20181 REVISION C0.0 4/3117 C GRIMM AND PARKER, P.C. 2014 1 0 13 t / / PIPE. Y X l / T Y.. Pian View i Section A -A LEGEND 181 171 161 151 14 TRAFFIC STOP BAR ©GRIMM AND PARKER, P.C. 2014 STORM PIPE & STRUCTURE NO. GENERAL NOTES CURB 1. ALL MATERIALS AND CONSTRUCTION SHALL BE IN ACCORDANCE WITH CURRENT VIRGINIA DEPARTMENT OF 200 PROPOSED CONTOUR TRANSPORTATION'S SPECIFICATIONS AND STANDARDS. PROPOSED SPOT ELEVATION 2. PRIOR TO ANY CONSTRUCTION, THE CONTRACTOR SHALL CONSULT THE ENGINEER AND VERIFY THE APPROVAL OF THE PLANS BY ALL FEDERAL, STATE AND LOCAL AGENCIES. 3. LAND USE PERMITS (LUP-A) MUST BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION > PRIOR TO BEGINNING ANY CONSTRUCTION WITHIN THE EXISTING STATE MAINTAINED RIGHT OF WAY (INCLUDING ACCESS). 4. THE CONTRACTOR SHALL VERIFY THE ELEVATIONS OF ALL POINTS OF CONNECTION OR PROPOSED WORK TO EXISTING CURBS, SANITARY LINES, WATERLINES, ETC, PRIOR TO CONSTRUCTION. M 5. UPON DISCOVERY OF SOILS THAT ARE UNSUITABLE FOR FOUNDATIONS, SUBGRADES, OR OTHER ROADWAY CONSTRUCTION PURPOSES, THE CONTRACTOR SHALL IMMEDIATELY CONTACT THE OWNER. THESE AREAS SHALL BE EXCAVATED BELOW PLAN GRADE AS DIRECTED BY THE OWNER, BACKFILLED WITH SUITABLE MATERIAL AND COMPACTED IN ACCORDANCE WITH CURRENT. 6. ALL STORM SEWER DESIGN AND CONSTRUCTION TO BE IN ACCORDANCE WITH VDOT I AND I LD -94 (D) 121.13. 7. ALL STORM SEWER PIPE SHALL BE REINFORCED TONGUE AND GROVE CONCRETE PIPE IN ACCORDANCE WITH ASTM -C-76. PIPE WITHIN THE RIGHT OF WAY SHALL BE MINIMUM CLASS III OR GREATER IN ACCORDANCE WITH CURRENT VDOT STANDARDS AND SPECIFICATIONS. 8. IF PRE -CAST UNITS ARE TO BE USED, VDOT SHALL BE NOTIFIED AND THE MANUFACTURER SHALL SUBMIT DRAWING DETAILS FOR REVIEW. CERTIFICATION AND VDOT STAMP WILL BE REQUIRED ON ALL UNITS. 9. ALL CONCRETE SHALL BE A3 -AE (AIR ENTRAINED 3,000 PSI), UNLESS OTHERWISE NOTED. 10. DESIGN CHANGES, SPECIFIED MATERIALS CHANGES AND/OR FIELD CHANGES FROM THE APPROVED PLANS NEED TO BE RESUBMITTED TO THE ENGINEER PRIOR TO PROCEEDING WITH THE WORK. A LETTER OF L EXPLANATION SHALL ACCOMPANY THE REVISED PLANS AND/OR THE DRAINAGE CALCULATIONS, WHICH MUST BE SUBMITTED AND APPROVED BY THE ENGINEER. 11. CONTRACTOR SHALL VERIFY LOCATION AND ELEVATION OF ALL UNDERGROUND UTILITIES SHOWN ON PLANS IN AREAS OF CONSTRUCTION PRIOR TO STARTING WORK. CONTACT ENGINEER IMMEDIATELY IF LOCATION OR ELEVATION IS DIFFERENT FROM THAT SHOWN ON PLAN. IF THERE APPEARS TO BE A CONFLICT, AND/OR UPON DISCOVERY OF ANY UTILITY NOT SHOWN ON THIS PLAN, CALL MISS UTILITY OF CENTRAL VIRGINIA AT 1-800-552-7001. THE OWNER SHALL BE RESPONSIBLE FOR THE RELOCATION OF ANY UTILITY WITHIN EXISTING AND/OR PROPOSED RIGHT-OF-WAY REQUIRED BY THE DEVELOPMENT. 12. THE INSTALLATION OF SEWER, WATER, AND GAS MAINS (INCLUDING SERVICE LATERALS AND SLEEVES) SHALL BE COMPLETED PRIOR TO THE PLACEMENT OF AGGREGATE BASE COURSE. 13. ALBEMARLE COUNTY APPROVAL OF CONSTRUCTION RU TION PLANS DOES NOT PRECLUDE THE RIGHT TO REQUIRE Q IRE ADDITIONAL FACILITIES AS DEEMED NECESSARY. 14. A PRIME COAT SEAL BETWEEN THE AGGREGATE BASE AND BITUMINOUS CONCRETE WILL BE REQUIRED AT THE RATE OF 0.30 GALLONS PER SQUARE YARD (REC-250 PRIME COAT) PER VDOT STANDARDS AND K SPECIFICATIONS. 15. THE SCHEDULING OF AGGREGATE BASE INSTALLATION AND SUBSEQUENT PAVING ACTIVITIES SHALL ACCOMMODATE FORECAST WEATHER CONDITIONS PER SECTION 315 OF THE ROAD AND BRIDGE SPECIFICATIONS. 16. THE OWNERS REPRESENTATIVE SHALL HAVE APPROVED THE AGGREGATE BASE COURSE(S) FOR DEPTH, TEMPLATE AND PERFORMED THE REQUIRED FIELD INSPECTION (PROOF ROLL) PRIOR TO PLACEMENT OF ANY SURFACE COURSE(S). CONTACT THE OWNER FOR INSPECTION FOR THE AGGREGATE BASE COURSE(S) 48 HOURS PRIOR TO APPLICATION OF THE,SURFACE COURSE(S). 17. A GEOTECHNICAL ENGINEER IS TO ASCERTAIN CAUSE AND CERTIFY RECOMMENDED METHOD OF REPAIR FOR ALL PAVEMENT STRUCTURAL FAILURES PRIOR TO STATE ACCEPTANCE. (N/A) 18. ALL VEGETATION AND ORGANIC MATERIAL MATERIAL IS TO BE REMOVED FROM THE PROPOSED PAVEMENT LIMITS PRIOR TO CONDITIONING OF THE SUBGRADE. 19. CERTIFICATION AND SOURCE OF MATERIALS ARE TO BE SUBMITTED TO THE OWNER FOR ALL MATERIALS AND BE IN ACCORDANCE WITH THE ROAD AND BRIDGE SPECIFICATIONS, AND ROAD AND BRIDGE STANDARDS. 20. ALL APPROACH GUTTERS TO SAG INLETS SHALL MAINTAIN A MINIMUM SLOPE OF 0.004 ft./ft. 21. ALL NEW HANDICAP ACCESSIBLE REQUIREMENTS ON-SITE AND WITHIN ALL NEW STRUCTURES SHALL COMPLY WITH THE 2009 UNIFORM STATEWIDE BUILDING CODE, 2009 VIRGINIA CONSTRUCTION CODE, 2010 ADA STANDARDS FOR ACCESSIBLE DESIGN AND ICC/ANSI A117.1-03. 22. REFER TO SHEET L1.0 FOR ALL LANDSCAPING GENERAL NOTES. 23. VISIBILITY OF ALL MECHANICAL EQUIPMENT FROM THE ENTRANCE CORRIDOR SHALL BE ELIMINATED. GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING H TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. 3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF-SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA.. 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS, 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5,1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED F TO THE HOURS OF 7:OOAM TO 9:OOPM. 15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAT MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND STRUCTURES/IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABLE ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY. 17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. C 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. C AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5% PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 19. MAINTENANCE: ALL MEASURES SHALL BE INSPECTED WEEKLY AND AFTER EACH RAINFALL EVENT. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES SHALL BE REPAIRED IMMEDIATELY. SILT TRAPS SHALL BE CLEANED WHEN 50% OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS SHALL BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DYKES WHICH COLLECT SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIATELY. 20. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS OF D FINAL SITE STABILIZATION, WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT To APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. 21. THIS PLAN SHALL BE VOID IF THE OWNER DOES NOT OBTAIN A PERMIT WTIHIN 1 YEAR OF THE DATE OF APPROVAL. (WATER PROTECTION ORDINANCE SECTION 17-204G.) 22. PERMANENT VEGETATION SHALL BE INSTALLED ON ALL DENUDED AREAS WITHIN NINE (9) MONTHS AFTER THE DATE THE LAND DISTURBING ACTIVITY COMMENCED. (WATER PROTECTION ORDINANCE SECTION 17-207B) ALBEMARLE COUNTY ENGINEERING GENERAL CONSTRUCTION NOTES 1. PRIOR TO ANY CONSTRUCTION WITHIN ANY EXISTING PUBLIC RIGHT OF WAY, INCLUDING CONNECTION TO ANY EXISTING ROAD, A PERMIT SHALL BE OBTAINED FROM THE VIRGINIA DEPARTMENT OF TRANSPORTATION (VDOT). THIS PLAN AS DRAWN MAY NOT ACCURATELY REFLECT THE REQUIREMENTS OF THE PERMIT. WHERE ANY DISCREPANCIES OCCUR THE REQUIREMENTS OF THE PERMIT SHALL GOVERN. 2. ALL MATERIALS AND CONSTRUCTION METHODS SHALL CONFORM TO CURRENT SPECIFICATIONS AND ��++ STANDARDS OF VDOT. �.�+ 3. EROSION AND SILTATION CONTROL MEASURES SHALL BE PROVIDED IN ACCORDANCE WITH THE APPROVED EROSION CONTROL PLAN AND MUST BE INSTALLED PRIOR TO ANY CLEARING, GRADIING OR OTHER CONSTRUCTION. 4. ALL SLOPES AND DISTURBED AREAS ARE TO BE FERTILIZED, SEEDED AND MULCHED. 5. THE MAXIMUM ALLOWABLE SLOPE IS 2:1 (HORIZONTAL:VERTICAL). WHERE REASONABLY OBTAINABLE, LESSER SLOPES OF 3:1 OR BETTER ARE TO BE ACHIEVED. 6. PAVED, RIP -RAP OR STABILIZATION MAT LINED DITCH MAY BE REQUIRED WHEN IN THE OPINION OF THE COUNTY ENGINEER, OR DESIGNEE, IT IS DEEMED NECESSARY IN ORDER TO STABILIZE A DRAINAGE CHANNEL. 7. ALL TRAFFIC CONTROL SIGNS SHALL CONFORM WITH THE VIRGINIA MANUAL FOR UNIFORM TRAFFIC CONTROL DEVICES. 8. UNLESS OTHERWISE NOTED ALL CONCRETE PIPE SHALL BE REINFORCED CONCRETE PIPE - CLASS III. 9. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). B ALBEMARLE COUNTY STORMWATER MANAGEMENT NOTES 1. ALL DAMS AND CONSTRUCTED FILL TO BE WITHIN 95% OF MAXIMUM DRY DENSITY AND 2% OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL TO BE APPROVED BY A GEOTECHNICAL EINGINEER. A GEOTECHNICAL ENGINEER IS TO BE PRESENT DURING CONSTRUCTION OF DAMS. 2. PIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORMWATER MANAGEMENT FACILITIES. 3. FOR TEMPORARY SEDIMENT TRAPS OR BASINS WHICH ARE TO BE CONVERTED TO PERMANENT STORMWATER MANAGEMENT FACILITIES; CONVERSION IS NOT TO TAKE PLACE UNTIL THE SITE IS STABILIZED, AND PERMISSION HAS BEEN OBTAINED FROM THE COUNTY EROSION CONTROL INSPECTOR. BLASTING NOTES 1. BLASTING SHALL NOT BE PERMITTED ON THIS PROJECT. 0 13 t / / PIPE. Y X l / T Y.. Pian View i Section A -A LEGEND !r r � ' Circular 31' �� lu`13h Q1tarKls ma"Jati FES trash. Guard Isom Oris Vl.Ow End. View ES -1 TRASH RACK AND GUARDS No Scale 101 9 GRADING TC =TOP OF CURB EP = EDGE OF PAVEMENT EX. = EXISTING PROP.=PROPOSED APPROX. = APPROXIMATELY s-. re�je� 5t�ns�arc� Trash rack ANCHOR WITH 5/8' REBAR IMBEDDED 24" IN GROUND; 2 PER WHEEL STOP 7 7-1/2" PRECAST CONCRETE WHEEL STOP No Scale EXIST GRADE METAL INSPECTION FRAME W/ SOLID LID /� (NEENAH R-1975 OR EQUIVALENT) l 3" CONCRETE COLLAR CRUSHED STONE BEDDING Standard Trash Rack:woaei:TriMlfkAck 6" DI CLEANOUT elallA ectii n 5bg 4 x 4 POST UNLESS OTHERWISE NOTED 2 x 4 RAIL ON PLAN (TYIP, ) 1 x 6 TRIMMER 0„ I i-1 x 6 SIDING 3'-0" NOTE ADJUST TO HEIGHT 10" 3 OF CASTER WHEELS ON GA TE CONC. --- STONE 6" 3'-0" --i 1'- 12" POST ELEVATION DUMPSTER PAD & ENCLOSURE DETAIL No Scale PLUG AT END OF LINE 6 GTH 0.5' FROM EP WIDTH OF PARKING SPACED INDICATED ON SHEET C4.0 45° (TYP.) 4" SOLID WHITE LINE. VDOT TYPE A PAINT. 2' (TYP 2' (TYP 5 41 31 21_ _ 1 ROADS �' LLI L1J TRAFFIC STOP BAR .. STORM PIPE & STRUCTURE NO. Z� CURB --- ------ 2'00 EXISTING CONTOUR 200 PROPOSED CONTOUR TC 240.5 PROPOSED SPOT ELEVATION 0 PARKING COUNT !r r � ' Circular 31' �� lu`13h Q1tarKls ma"Jati FES trash. Guard Isom Oris Vl.Ow End. View ES -1 TRASH RACK AND GUARDS No Scale 101 9 GRADING TC =TOP OF CURB EP = EDGE OF PAVEMENT EX. = EXISTING PROP.=PROPOSED APPROX. = APPROXIMATELY s-. re�je� 5t�ns�arc� Trash rack ANCHOR WITH 5/8' REBAR IMBEDDED 24" IN GROUND; 2 PER WHEEL STOP 7 7-1/2" PRECAST CONCRETE WHEEL STOP No Scale EXIST GRADE METAL INSPECTION FRAME W/ SOLID LID /� (NEENAH R-1975 OR EQUIVALENT) l 3" CONCRETE COLLAR CRUSHED STONE BEDDING Standard Trash Rack:woaei:TriMlfkAck 6" DI CLEANOUT elallA ectii n 5bg 4 x 4 POST UNLESS OTHERWISE NOTED 2 x 4 RAIL ON PLAN (TYIP, ) 1 x 6 TRIMMER 0„ I i-1 x 6 SIDING 3'-0" NOTE ADJUST TO HEIGHT 10" 3 OF CASTER WHEELS ON GA TE CONC. --- STONE 6" 3'-0" --i 1'- 12" POST ELEVATION DUMPSTER PAD & ENCLOSURE DETAIL No Scale PLUG AT END OF LINE 6 GTH 0.5' FROM EP WIDTH OF PARKING SPACED INDICATED ON SHEET C4.0 45° (TYP.) 4" SOLID WHITE LINE. VDOT TYPE A PAINT. 2' (TYP 2' (TYP 5 41 31 21_ _ 1 45° (TYP.) CLEANOUT DETAIL PAVEMENT STRIPING DETAIL No Scale No Scale STEEL CAP SOLID WHITE LINE HIGH VISIBILITY THERMOPLAST PER VDOT STANDARDS 6" DIA. STEEL -PIPE FILLED WITH CONCRETE AND 3.5' { POWDER COATED (COLOR TO BE SELECTED BY OWNER) PAVEMENT PATCH =I �1 I2' 2' II=I=1 Ifi I (TYP.) (TYP.) 3.5' « 2'-0" DIAMETER 3,000 PSI AIR -ENTRAINED CONC. FOOTING -2" MINIMUM CONCRETE BELOW STEEL PIPE ►. - BOLLARD DETAIL No Scale 4" TOP OF CURB R=2" a SURFACE BASE VDOT A-3 CONCRETE UBBASE) D CONTINUE 21B STONE BASE FROM ADJACENT PAVEMENT SECTION UNDER CURB VDOT STANDARD CG -2 CURB No Scale 22'-0" 1 x 1' 4' 3' 3.2' 3.2' 3.2 3.2 3.2 3' BOLLARD (TYP.) CONC. PAD 1 x 6 4' TRIMMER 6 x 6 POSTS (TYP.) 1 x 6 SIDING OPEN ACCESS SOUTH SIDE NO GATES PLAN VIEW 1 x 6 CAP--- : 1 x 6 TRIMMER NOTE., ALL LUMBER SHALL 2 x 4 RAILS BE PRESSURE TREA TED OUTSIDE ELEVATION 3 SIDES INSIDE ELEVATION 3 SIDES /�\\/�\ COMPACTED SUBGRADE DENOTES LIGHT DUTY ASPHALT PAVEMENT ON PLANS LIGHT DUTY ASPHALT PAVEMENT SECTION No Scale R= Y4" CONTROL JOINT SPACED AT WIDTH OF WALK (MAXIMUM) a --►�.,;- EXPANSION JOINT AT MAX OF 30', WITH PREMOLDED EXPANSION FILLER CONC. WALK �4 - - '-a .d 4 m a° Q ._ a �. a ° D O P O O O p p p D p O p p D p P p p p p D D C COMPACTED SUBGRADE 4" 21-B STONE CONCRETE SIDEWALK JOINT DETAIL No Scale _ VARIABLE WIDTH' NON -SLIP BROOM FINISH ---_MAX. CROSS SLOPE 2% / 4" 3,000 PSI AIR -ENTRAINED CONCRETE /COMPACTED SUBGRADE 4" TYPE 21 B STONE NOTE: SIDEWALKS SHALL BE CONSTRUCTED IN ACCORDANCE WITH VDOT STANDARDS. �.4. a a CONCRETE SIDEWALK PAVEMENT SECTION No Scale 1.5" ASPHALTIC CONCRETE SURFACE COURSE - SM -9.5A 2.5" INTERMEDIATE BASE COURSE - BM25.0 T( p<y K -y rr-11 8" TYPE 21-B AGGREGATE SUBBASE COURSE �-- COMPACTED SUBGRADE DENOTES HEAVY DUTY ASPHALT PAVEMENT ON PLANS HEAVY DUTY ASPHALT PAVEMENT SECTION No Scale EXPANSION JOINT WITH PREMOLDED EXPANSION 1/4" SEALANT FILLER, "ZIP STRIP" OR EQUIV., SEAL WITH NON -SLIP BROOM FINISH SILICONE SEALANT WWF 6x6 W2.9xW2.9 2" -w �a,-� 4 '` • 10" 3,000 PSI AIR ENTRAINED PORTLAND 4 a4 CEMENT CONCRETE 0 0 0 0 o a a o 6" TYPE 21A STONE COVER / ---- COMPACTED SUBGRADE /��\.� \� /� /. /� (CBR 11.2) DENOTES CONCRETE SERVICE AREA PAVEMENT ON PLANS HEAVY DUTY CONCRETE SECTION No Scale EXISTING PAVEMENT PROPOSED PAVEMENT > a SAWCUT THROUGH a MATCH EX. CROSS U EX. SURFACE SLOPE UNLESS OTHERWISE w &REMOVE COURSE w SPECIFIED ON PLANS PAVEMENT PROPOSED SURFACE COURSE XI 2" + \ I EXISTING `-�-- PAVEMENT MILL EX. SURFACE COURSE SAWCUT EX. BASE COURSE EDGE OF PAVEMENT AGGR. BASE NOTE: PROPOSED PAVEMENT MUST TIE IN WITH EXISTING PAVEMENT PAVEMENT REPLACEMENT JOINT DETAIL No Scale SLOPE NOT TO EXCEED '° 1:12 ° 6„ OR AS SHOWN IN PLAN CURB WIPE DOWN DETAIL No Scale 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 .s 3" Lk. N� o. I bl.0�2tv�3.��;jri;, 17 5f3 1I9� 0 • �' LLI L1J L 2.0" BITUMINOUS CONCRETE SURFACE COURSE - SM -9.5A Z� O p (PLACED IN SINGLE LIFT) D D D D p O O O O O O D 8" TYPE 21B AGGREGATE BASE COURSE 45° (TYP.) CLEANOUT DETAIL PAVEMENT STRIPING DETAIL No Scale No Scale STEEL CAP SOLID WHITE LINE HIGH VISIBILITY THERMOPLAST PER VDOT STANDARDS 6" DIA. STEEL -PIPE FILLED WITH CONCRETE AND 3.5' { POWDER COATED (COLOR TO BE SELECTED BY OWNER) PAVEMENT PATCH =I �1 I2' 2' II=I=1 Ifi I (TYP.) (TYP.) 3.5' « 2'-0" DIAMETER 3,000 PSI AIR -ENTRAINED CONC. FOOTING -2" MINIMUM CONCRETE BELOW STEEL PIPE ►. - BOLLARD DETAIL No Scale 4" TOP OF CURB R=2" a SURFACE BASE VDOT A-3 CONCRETE UBBASE) D CONTINUE 21B STONE BASE FROM ADJACENT PAVEMENT SECTION UNDER CURB VDOT STANDARD CG -2 CURB No Scale 22'-0" 1 x 1' 4' 3' 3.2' 3.2' 3.2 3.2 3.2 3' BOLLARD (TYP.) CONC. PAD 1 x 6 4' TRIMMER 6 x 6 POSTS (TYP.) 1 x 6 SIDING OPEN ACCESS SOUTH SIDE NO GATES PLAN VIEW 1 x 6 CAP--- : 1 x 6 TRIMMER NOTE., ALL LUMBER SHALL 2 x 4 RAILS BE PRESSURE TREA TED OUTSIDE ELEVATION 3 SIDES INSIDE ELEVATION 3 SIDES /�\\/�\ COMPACTED SUBGRADE DENOTES LIGHT DUTY ASPHALT PAVEMENT ON PLANS LIGHT DUTY ASPHALT PAVEMENT SECTION No Scale R= Y4" CONTROL JOINT SPACED AT WIDTH OF WALK (MAXIMUM) a --►�.,;- EXPANSION JOINT AT MAX OF 30', WITH PREMOLDED EXPANSION FILLER CONC. WALK �4 - - '-a .d 4 m a° Q ._ a �. a ° D O P O O O p p p D p O p p D p P p p p p D D C COMPACTED SUBGRADE 4" 21-B STONE CONCRETE SIDEWALK JOINT DETAIL No Scale _ VARIABLE WIDTH' NON -SLIP BROOM FINISH ---_MAX. CROSS SLOPE 2% / 4" 3,000 PSI AIR -ENTRAINED CONCRETE /COMPACTED SUBGRADE 4" TYPE 21 B STONE NOTE: SIDEWALKS SHALL BE CONSTRUCTED IN ACCORDANCE WITH VDOT STANDARDS. �.4. a a CONCRETE SIDEWALK PAVEMENT SECTION No Scale 1.5" ASPHALTIC CONCRETE SURFACE COURSE - SM -9.5A 2.5" INTERMEDIATE BASE COURSE - BM25.0 T( p<y K -y rr-11 8" TYPE 21-B AGGREGATE SUBBASE COURSE �-- COMPACTED SUBGRADE DENOTES HEAVY DUTY ASPHALT PAVEMENT ON PLANS HEAVY DUTY ASPHALT PAVEMENT SECTION No Scale EXPANSION JOINT WITH PREMOLDED EXPANSION 1/4" SEALANT FILLER, "ZIP STRIP" OR EQUIV., SEAL WITH NON -SLIP BROOM FINISH SILICONE SEALANT WWF 6x6 W2.9xW2.9 2" -w �a,-� 4 '` • 10" 3,000 PSI AIR ENTRAINED PORTLAND 4 a4 CEMENT CONCRETE 0 0 0 0 o a a o 6" TYPE 21A STONE COVER / ---- COMPACTED SUBGRADE /��\.� \� /� /. /� (CBR 11.2) DENOTES CONCRETE SERVICE AREA PAVEMENT ON PLANS HEAVY DUTY CONCRETE SECTION No Scale EXISTING PAVEMENT PROPOSED PAVEMENT > a SAWCUT THROUGH a MATCH EX. CROSS U EX. SURFACE SLOPE UNLESS OTHERWISE w &REMOVE COURSE w SPECIFIED ON PLANS PAVEMENT PROPOSED SURFACE COURSE XI 2" + \ I EXISTING `-�-- PAVEMENT MILL EX. SURFACE COURSE SAWCUT EX. BASE COURSE EDGE OF PAVEMENT AGGR. BASE NOTE: PROPOSED PAVEMENT MUST TIE IN WITH EXISTING PAVEMENT PAVEMENT REPLACEMENT JOINT DETAIL No Scale SLOPE NOT TO EXCEED '° 1:12 ° 6„ OR AS SHOWN IN PLAN CURB WIPE DOWN DETAIL No Scale 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 .s 3" Lk. N� o. I bl.0�2tv�3.��;jri;, 17 5f3 1I9� 0 • �' LLI L1J L Z� z H > N ® H 0 i +� N � N N y a) N to > rn E N no v WN O 0) v� rU)o Uj G CL z F GP #21487.10 0 Q 0 1- r I<� C-3 W U3 0 CD J U ~ W E-- LCL._ ME 0 C� w L� z W ham- --- < LU z C uj ll.i Wcj:) C73 O Q C �� O. .� Z C/3� DATE DESCRIPTION 4/3/2017 REVISION '/13/2017 REVISION 8/1/2017 REVISION 9/6/2017 REVISION r* 3/30/2018 REVISION 5/3/2018 REVISION C1.0 4/3/17 © GRIMM AND PARKER, P.C. 2014 A 181 171 16 ©GRIMM AND PARKER, P.C. 2014 EROSION AND SEDIMENT CONTROL NARRATIVE PROJECT DESCRIPTION THIS PROJECT INCLUDES A BUILDING ADDITION TO SCOTTSVILLE ELEMENTARY SCHOOL, ADDITIONAL PARKING, SIDEWALK AND ASSOCIATED SITE WORK. LIMITS OF CLEARING AND GRADING ARE 0.61 ACRES. ADJACENT PROPERTY THESE IMPROVEMENTS ARE BEING MADE WITHIN THE PROPERTY BOUNDARY. THE PROPERTY IS BOUNDED BY RESIDENTIAL PROPERTIES AND VA -20 SCOTTSVILLE ROAD TO THE NORTH. RESIDENTIAL PROPERTIES BORDER THE SOUTH AND EAST SIDE. E THE WEST SIDE IS BORDERED BY A CHURCH. EXISTING SITE CONDITIONS M THE SITE IS CURRENTLY THE LOCATION OF SCOTfSVILLE ELEMENTARY SCHOOL. OFF-SITE AREAS NO OFFSITE AREAS WILL BE DISTURBED. CRITICAL EROSION AREAS NO CRITICAL EROSION AREA EXIST. EROSION AND SEDIMENT CONTROL MEASURES UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE CURRENT ADDITION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. THE MINIMUM STANDARDS OF THE VESCH SHALL BE ADHERED TO UNLESS OTHERWISE WAIVED OR APPROVED BY A VARIANCE BY LOCAL AUTHORITIES HAVING JURISDICTION. L STORMWATER RUNOFF CONSIDERATIONS EXISTING STORMWATER MANAGEMENT FACILITY WILL BE MODIFIED TO DETAIN ADDITIONAL RUNOFF DUE TO ADDED IMPERVIOUS AREA. VEGETATED FILTER STRIP RUNOFF REDUCTION METHOD AND EXTRA NIUTRIENT CREDITS FROM PROJECT AT WOODBROOK ELEMENTARY WILL USED TO MEET REQUIREMENTS FOR QUALITY. EROSION AND SEDIMENT CONTROL MAINTENANCE ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE MAINTAINED IN ACCORDANCE WITH IVESCH AND THE CONSTRUCTION SEQUENCE, INCLUDING THE INSPECTION OF ALL MEASURES AFTER ALL RAIN (EVENTS. STRUCTURAL PRACTICES: 1. TEMPORARY CONSTRUCTION ENTRANCE - 3,02 A TEMPORARY CONSTRUCTION ENTRANCE SHALL BE PROVIDED AT THE LOCATION INDICATED ON THE PLANS. IT IS IMPERATIVE THAT THIS MEASURE BE MAINTAINED THROUGHOUT CONSTRUCTION. ITS PURPOSE IS TO REDUCE THE AMOUNT OF MUD K TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. 2. SILT FENCE BARRIER - 3.05 SILT FENCE SEDIMENT BARRIERS SHALL BE INSTALLED DOWNSLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT -LADEN RUNOFF FROM SHEET FLOW AS INDICATED. ITS PURPOSE IS TO INTERCEPT SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS AND PREVENT SEDIMENT FROM LEAVING THE SITE. 3. STORM DRAIN INLET PROTECTION - 3.07 STONE FILTERS SHALL BE PLACED AT THE INLET OF ALL DRAINAGE STRUCTURES AS INDICATED ON PLANS. ITS PURPOSE IS TO PREVENT SEDIMENT FROM ENTERING THE STORM DRAINAGE SYSTEM PRIOR TO PERMANENT STABILIZATION. 4. CULVERT INLET PROTECTION - 3.08 A SEDIMENT FILTER LOCATED AT THE INLET TO A CULVERT TO PREVENT SEDIMENT FROM ENTERING THE SYSTEM PRIOR TO PERMANENT STABILIZATION. 5. DUST CONTROL - 3.39 DUST CONTROL IS TO BE USED THROUGH THE SITE IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT. VEGETATIVE PRACTICES: 1. TEMPORARY SEEDING - 3.31 ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR MORE THAN 30 DAYS SHALL BE SEEDED WITH FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS. SELECTION OF THE SEED MIXTURE SHALL DEPEND ON THE TIME OF YEAR IT IS APPLIED. 2. PERMANENT SEEDING - 3.32 FOLLOWING GRADING ACTIVITIES, ESTABLISH PERENNIAL VEGETATIVE COVER BY PLANTING SEED TO REDUCE EROSION, STABILIZE DISTURBED AREAS, AND ENHANCE NATURAL BEAUTY. MANAGEMENT STRATEGIES 1. PROVIDE SEDIMENT TRAPPING MEASURES AS A FIRST STEP IN GRADING, SEED AND MULCH IMMEDIATELY FOLLOWING INSTALLATION. 2. PROVIDE TEMPORARY SEEDING OR OTHER STABILIZATION IMMEDIATELY AFTER GRADING. 1 ISOLATE TRENCHING FOR UTILITIES AND DRAINAGE FROM DOWNSTREAM CONVEYANCES IN ORDER TO MINIMIZE PERIMETER CONTROLS. 4. ALL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE MAINTAINED UNTIL THEY ARE NO LONGER H REQUIRED TO COMPLY WITH THE CONTRACT DOCUMENTS OR STATE LAW. PERMANENT STABILIZATION ALL NON -PAVED AREAS DISTURBED BY CONSTRUCTION SHALL BE STABILIZED WITH PERMANENT SEEDING IMMEDIATELY FOLLOWING FINISHED GRADING. SEEDING SHALL BE IN ACCORDANCE WITH STD. & SPEC. 3.32, PERMANENT SEEDING. SEED TYPE SHALL BE AS SPECIFIED FOR "MINIMUM CARE LAWNS" AND "GENERAL SLOPES" IN THE HANDBOOK FOR SLOPES LESS THAN 3:1. FOR SLOPES GREATER THAN 3:1, SEED TYPE SHALL BE AS SPECIFIED FOR "LOW MAINTENANCE SLOPES" IN TABLE 3.32-D OF THE HANDBOOK. FOR MULCH (STRAW OR FIBER) SHALL BE USED ON ALL SEEDED SURFACES. IN ALL SEEDING OPERATIONS SEED, FERTILIZER AND LIME SHALL BE APPLIED PRIOR TO MULCHING. SEQUENCE OF INSTALLATION PHASE I (SEE SHEET C3.1) 1. A PRE -CONSTRUCTION MEETING IS REQUIRED WITH ALBEMARLE COUNTY E&S INSPECTOR, CONTRACTOR, G OWNER, AND ENGINEER. THIS MEETING SHALL TAKE PLACE ON-SITE. CLEARING LIMITS MUST BE FLAGGED PRIOR TO THE MEETING WITH ONE (1) WEEK OF NOTICE. 2. INSTALL CONSTRUCTION ENTRANCE, TREE PROTECTION, INLET PROTECTION AND SILT FENCE:. 3. AFTER ALL EROSION AND SEDIMENT CONTROL MEASURES ARE IN PLACE, SITE WORK CAN BEGIN, 4. ROUGH GRADE PROJECT AREA. 5. SEED ALL DENUDED AREAS PER VESCH STANDARDS. PHASE II (SEE SHEET C3.2) 1. INSTALL ADDITIONAL INLET PROTECTION WHERE SHOWN ON THE PHASE II EROSION AND SEDIMENT CONTROL PLAN AS THE STORM SYSTEM IS CONSTRUCTED AND BECOMES OPERATIONAL. 2. FINE GRADE PROJECT AREA. APPLY PERMANENT SOIL STABILIZATION TO THESE AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS ACHIEVED. 3. ALL STORMWATER PIPING & STRUCTURES, INCLUDING DETENTION FACILITIES SHALL BE INSPECTED FOR SILT/SEDIMENT. IF PRESENT, SILT/SEDIMENT SHALL BE CLEANED OUT FOR THE SYSTEM TO THE F SATISFACTION OF THE E&S INSPECTOR. 4. APPLY PERMANENT SOIL STABILIZATION TO THESE AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS ACHIEVED. SILT FENCE BELOW SEDEMENT BASIN MUST BE MAINTAINED THROUGH GRADING AND CONSTRUCTION. 5. ONCE CONSTRUCTION IS COMPLETE AND ALL CONTRIBUTING AREAS ARE STABILIZED, EROSION CONTROL MEASURES CAN BE REMOVED UPON APPROVAL FROM THE E&S INSPECTOR. E 1 0 0 0 151 141 131 121 MINIMUM STANDARDS: AN EROSION AND SEDIMENT CONTROL PROGRAM ADOPTED BY A DISTRICT OR LOCALITY MUST BE CONSISTENT WITH THE FOLLOWING CRITERIA, TECHNIQUES AND METHODS: MS -1. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. MS -2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE. MS -3. A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED. PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT IS UNIFORM, MATURE ENOUGH TO SURVIVE AND WILL INHIBIT EROSION. MS -4. SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. MS -5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION. MS -6. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP OR BASIN. A. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE ACRES. B. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW FROM DRAINAGE AREAS GREATER THAN OR EQUAL TO THREE ACRES SHALL BE CONTROLLED BY A SEDIMENT BASIN. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE OUTFALL SYSTEM SHALL, AT A MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A 25 -YEAR STORM OF 24-HOUR DURATION. RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS SHALL CORRESPOND TO A BARE EARTH CONDITION OR THOSE CONDITIONS EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED. MS -7. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED. MS -8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR PERMANENT CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE. MS 9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. MS -10. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT. MS -11. BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. MS -12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NONERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBLE COVER MATERIALS. MS -13. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIAL SHALL BE PROVIDED. MS -14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. MS -15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. MS -16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER APPLICABLE CRITERIA: A. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES. C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF-SITE PROPERTY. D. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS. F. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH. MS -17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD SURFACE, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY, SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES. MS -18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM AUTHORITY. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. MS- 19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE STANDARDS AND CRITERIA LISTED IN SECTION 19 OF VIRGINIA ADMINISTRATIVE CODE 9VAC25-840-40 MINIMUM STANDARDS. GENERAL EROSION AND SEDIMENT CONTROL NOTES: ES -1: UNLESS OTHERWISE INDICATED, CONSTRUCT AND MAINTAIN ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE LATEST EDITION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS. ES -2: THE CONTROLLING EROSION AND SEDIMENT CONTROL AUTHORITY WILL MAKE A CONTINUING REVIEW AND EVALUATION OF THE METHODS AND EFFECTIVENESS OF THE EROSION CONTROL PLAN. ES -3: PLACE ALL EROSION AND SEDIMENT CONTROL MEASURES PRIOR TO OR AS THE FIRST STEP IN CLEARING, GRADING, OR LAND DISTURBANCE. ES -4: MAINTAIN A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN ON THE SITE AT ALL TIMES. ES -5: PRIOR TO COMMENCING LAND -DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFFSITE BORROW OR WASTE AREA), SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE ARCHITECT/ENGINEER AND THE CONTROLLING EROSION AND SEDIMENT CONTROL AUTHORITY FOR REVIEW AND ACCEPTANCE. ES -6: PROVIDE ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE RESPONSIBLE LAND DISTURBER. (MODIFIED NOTE) ES -7: ALL DISTURBED AREAS SHALL DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND -DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT. ES -8: DURING DEWATERING OPERATIONS, PUMP WATER INTO AN APPROVED FILTERING DEVICE. ES -9: INSPECT ALL EROSION CONTROL MEASURES DAILY AND AFTER EACH RUNOFF- PRODUCING RAINFALL EVENT, MAKE ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES IMMEDIATELY. SOILS INFORMATION: 43C - KLINESVILLE CHANNERY SILT LOAM, 7 TO 15 PERCENT SLOPES. 10 TO 20 INCHES TO PARALITHIC BEDROCK, SOMEWHAT EXCESSIVELY DRAINED. HYDROLOGIC SOIL GROUP: D 49B - MANASSAS SILT LOAM, 2 TO 7 PERCENT SLOPES, MORE THAN 80 INCHES TO DENSIC MATERIAL, MODERATELY WELL DRAINED. HYDROLOGIC SOIL GROUP: B 84C - TOTIER SILT LOAM, 7 TO 15 PERCENT SLOPES, 40 TO 60 INCHES TO PARALITHIC BEDROCK, WELL DRAINED. HYDROLOGIC SOIL GROUP: B 181 171 161 151 141 131 12 11 101 91 8 TABLE 3.31-B ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS "QUICK REFERENCE FOR ALL REGIONS" PLANTING DATES SPECIES RATE (LBS./ACRE) SEPT. 1 - FEB. 15 50/50 MIX OF ANNU AL RYEGRASS (LOLIUM MULTI-FLORUM) & 50-100 CEREAL (WINTER) RYE (SECALE CEREALS) FEB. 16 - APR. 30 ANNUAL RYEGRASS 60-100 (LOLIUM MULTI-FLORUM) POINTS A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION (FRONT ELEVATION) MAY 1 - AUG. 31 GERMAN MILLET 50 (SETARIA ITALICA) IIIiI S 3.31 61 TEMPORARY SEEDING PLANT MATERIALS 0z FILTER KEY IN No Scale - I IMENEM 11 111 ID ,1 ..J � �� %:�:•%�::�: •�:�:•i �:�:�:�•���_�•�•���•' TABLE 3.32-D I" SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA TOTAL LBS. PER ACRE MINIMUM CARE LAWN -� 4„ COMMERCIAL OR RESIDENTIAL 175-200 LBS. KENTUCKY 31 OR TURF -TYPE TALL FESCUE 90-100% IMPROVED PERENNIAL RYEGRASS 0-5% KENTUCKY BLUEGRASS 0-5% GENERAL SLOPE (3:1 OR LESS) FRAME KENTUCKY 31 FESCUE 128 LBS. RED TOP GRASS 2 LBS. SEASONAL NURSE CROP * 20 LBS. i 150 LBS. LOW -MAINTENANCE SLOPE (STEEPER THAN 3:1) KENTUCKY 31 FESCUE 108 LBS. RED TOP GRASS 2 LBS. 71 6 PERSPECTIVE VIEW 61 --- METAL M OR AX. (U) POSTS 5 41 PERSPECTIVE VIEW 3.10 METAL FENCE 31 POINTS A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION (FRONT ELEVATION) SAFETY FENCE U) IIIiI 1. SET THE STAKES. 2. EXCAVATE A 4"X 4" TRENCH UPSLOPE 61 ALONG THE LINE OF STAKES. 0z FILTER KEY IN ■■■ - - ■'"' __ •4•:•.44•. :may:•:�:�:�:�:�:�:ter - I IMENEM 11 111 ID ,1 ..J � �� %:�:•%�::�: •�:�:•i �:�:�:�•���_�•�•���•' PERSPECTIVE VIEW 61 --- METAL M OR AX. (U) POSTS 5 41 PERSPECTIVE VIEW 3.10 METAL FENCE 31 POINTS A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION (FRONT ELEVATION) SAFETY FENCE U) IIIiI 1. SET THE STAKES. 2. EXCAVATE A 4"X 4" TRENCH UPSLOPE 61 ALONG THE LINE OF STAKES. 0z FILTER KEY IN [SILT FENCE (W/O WARE SUPPORT) CLOTH ENTIRE PERIMETER I" NOTES: (III FLOW / -� 4„ 3. STAPLE FILTER MATERIAL TO STAKES AND 4. BACKFILL AND COMPACT THE EXTEND IT INTO THE TRENCH. EXCAVATED SOIL. FLC SHEET FLOW INSTALLATION (PERSPECTIVE VIEW) SAF PERSPECTIVE VIEW PLASTIC FENCE PERSPECTIVE VIEW 3.10 METAL FENCE SF POINTS A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION (FRONT ELEVATION) SAFETY FENCE U) IIIiI SECTION A -A No Scale 0z FILTER KEY IN [SILT FENCE (W/O WARE SUPPORT) CLOTH ENTIRE PERIMETER NOTES: No Scale 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION BASKET, OR GRAVEL CURB INLET SEDIMENT FILTER 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED USING PLATES 3.18-3 AND 3.18-4. OP 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 WOOD SILT FENCE DROP INLET PROTECTION FRAME No Scale --- MAX. - � I c DROP INLET WITH GRATE FRAME SEASONAL NURSE CROP * 20 LBS. '� �i�� is ��� 3' CROWNVETCH ** 20 LBS.��/ MIN. 150 LBS. /� /�` m__, -GATHER / �--- EXCESS * USE SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATESU-1 AT GRAVEL FILTER AS STATED BELOW: 12� CORNERS FEBRUARY 16TH THROUGH APRIL .................................. ANNUAL RYE RUNOFF WATER WIRE MESH PERSPECTIVE VIEWS MAY 1ST THROUGH AUGUST 15TH ............................ FOXTAIL MILLET FILTERED WATER STAKE AUGUST 16TH THROUGH OCTOBER. ................ ............. ANNUAL. RYE " NOVEMBER THROUGH FEBRUARY 15TH ........................ WINTER RYE4' e FABRIC _ � III "* SUBSTITUTE SERICEA LESPEDEZA FOR CROWNVETCH EAST OF I - I ' / (IIII MIN. FARMVILLE, VA (MAY THROUGH SEPTEMBER USE HULLED SERICEA, ALL F 1I OTHER PERIODS, USE UNHULLED SERICEA). IF FLATPEA IS USED IN LIEU OF CROWNVETCH, INCREASE RATE TO 30 LBS./ACRE. ALL LEGUME SEED SEDIMENT -/III) p MUST BE PROPERLY INOCULATED. WEEPING LOVEGRASS MAY BE CONCRETE- DETAIL A ADDED TO ANY SLOPE OR LOW -MAINTENANCE MIX DURING WARMER GUTTER CURB INLET 12" ELEVATION OF STAKE AND FABRIC ORIENTATION SEEDING PERIODS; ADD 10-20 LBS./ACRE IN MIXES. * GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE. SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET SPECIFIC APPLICATION: THIS METHOD OF INLET PROTECTION IS APPLICABLE AT DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER THAN 5%) WHERE CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO THE INLET SHEET OR OVERLAND FLOWS (NOT EXCEEDING 1 C.F.S.) ARE PS 3,32 IP CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND 3.07- 6 IP TYPICAL. THE METHOD SHALL NOT APPLY TO INLETS RECEIVING 3.07-1 UNPROTECTED AREAS. CONCENTRATED FLOWS, SUCH AS IN STREET OR HIGHWAY MEDIANS. PERMANENT SEEDING MIX FOR PIEDMONT AREA STORMWATER INLET PROTECTION STORM DRAIN INLET PROTECTION No Scale No Scale No Scale BLOCK AND GRAVEL DROP INLET SEDIMENT FILTER NOTE: ALL PROPOSED OUTLET PROTECTION SHALL BE 12" -�C 0 ETE DIAMETER AVERAGE, BROWNSTONE. --MIRE BL CK SCREEN ■E■ PIPE OUTLET CONDITIONS -----------------fi 7 "i J'� �'.fs: n.:/,, �� ��:..i'i3. ����.spa,�%�t��..�,'�s����;;•�:�`�,,., PROFILE 3do do PIPE OUTLET TO -VE_L fl1 FLAT AREA WITH NO GR_A_ " I DEFINED CHANNEL WIRE PLAN VIEW SCREEN FILTERED >� WATER RUNOFF OVERFLOW "-` WATER .......... ' SECTION A -A FILTER CLOTH 0% Tim, w A: KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER 7 3do(MIN,) La PE OUTLET TO WELL EFINED CHANNEL WITH SEDIMENT DROP INLET SEDIMENT-iWfl WITH GATE SPECIFIC APPLICATION: THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND WHERE AN OVERFLOW CAPACITY IS NECESSARY TO PREVENT EXCESSIVE PONDING IP AROUND THE STRUCTURE. * GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE AGGREGATE. STORM DRAIN INLET PROTECTION No Scale Lj U_EIElEI_ EI U LI EI STANDARD ORANGE VINYL OR PLASTIC CONSTRUCTION FENCE ATTACHED TO POSTS (PRE -WEATHERED WOOD, GALVANIZED STEEL, IRON OR THICK PVC PLASTIC), AT LEAST 40" ABOVE FINISH GRADE WITH SPAN BETWEEN POSTS NO GREATER THAN & ON CENTER. EVERY NINTH POST SHALL CONTAIN A WARNING SIGN THAT CLEARLY IDENTIFIES THE TP FENCE AS A TREE PROTECTION FENCE. 3.38 NO SCALE TREE PROTECTION No Scale SILT FENCE CULVERT INLET PROTECTION ENDWALL TOE OF FILL LT CULVERT 3 * TOE OF FILL SILT FENCE * DISTANCE IS 6' MINIMUM IF FLOW FLOW IS TOWARD EMBANKMENT **0IONAL STONE C� BINATION 1 1.0' 1 1.5' N FLOW 2.5' **VDOT #3, #357, #5, #56 OR # CL SS I COARSE AGGREGATE TO REPLA SILT RIP AP FENCE IN " HORSESHOE " W N HIGH CIP VELOCITY OF FLOW IS EXP TED 3.08-1 CULVERT INLET PROTECTION No Scale 81 71 61 5 (10' A tl hip 4.1 1zicl1€ iust, be 1; €>4'allecl with a miluffl ui l in.c 1 ballcock shutof wive e �:uppl�,fi�,,z .� � �:;I� 1a�5 � ���t'I� a �Ii=}��,'��Ylf.�f1. ���1��,: 1��:€' a�8ec1a�<�I All 4;c„'.{linle11L A1,10 be I.m iwv tl.€ted.l f2,0111 ellte:'€lig stdAnn ditches hes £.;1 wa€t't"£c o AVO WASH.RACK PAVED CONSTRUCTION ENTRANCE No Scale 41 3 21 1 21 1 A iIto ce U) IIIiI SECTION A -A 0z FILTER KEY IN 6"-9"; RECOMMENDED FOR CLOTH ENTIRE PERIMETER NOTES: I-II 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP, GABION BASKET, OR CONCRETE. 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED USING PLATES 3.18-3 AND 3.18-4. OP 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 3 18 INCHES. OUTLET PROTECTION No Scale WITH SEDIMENT DROP INLET SEDIMENT-iWfl WITH GATE SPECIFIC APPLICATION: THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE HEAVY FLOWS ARE EXPECTED AND WHERE AN OVERFLOW CAPACITY IS NECESSARY TO PREVENT EXCESSIVE PONDING IP AROUND THE STRUCTURE. * GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE AGGREGATE. STORM DRAIN INLET PROTECTION No Scale Lj U_EIElEI_ EI U LI EI STANDARD ORANGE VINYL OR PLASTIC CONSTRUCTION FENCE ATTACHED TO POSTS (PRE -WEATHERED WOOD, GALVANIZED STEEL, IRON OR THICK PVC PLASTIC), AT LEAST 40" ABOVE FINISH GRADE WITH SPAN BETWEEN POSTS NO GREATER THAN & ON CENTER. EVERY NINTH POST SHALL CONTAIN A WARNING SIGN THAT CLEARLY IDENTIFIES THE TP FENCE AS A TREE PROTECTION FENCE. 3.38 NO SCALE TREE PROTECTION No Scale SILT FENCE CULVERT INLET PROTECTION ENDWALL TOE OF FILL LT CULVERT 3 * TOE OF FILL SILT FENCE * DISTANCE IS 6' MINIMUM IF FLOW FLOW IS TOWARD EMBANKMENT **0IONAL STONE C� BINATION 1 1.0' 1 1.5' N FLOW 2.5' **VDOT #3, #357, #5, #56 OR # CL SS I COARSE AGGREGATE TO REPLA SILT RIP AP FENCE IN " HORSESHOE " W N HIGH CIP VELOCITY OF FLOW IS EXP TED 3.08-1 CULVERT INLET PROTECTION No Scale 81 71 61 5 (10' A tl hip 4.1 1zicl1€ iust, be 1; €>4'allecl with a miluffl ui l in.c 1 ballcock shutof wive e �:uppl�,fi�,,z .� � �:;I� 1a�5 � ���t'I� a �Ii=}��,'��Ylf.�f1. ���1��,: 1��:€' a�8ec1a�<�I All 4;c„'.{linle11L A1,10 be I.m iwv tl.€ted.l f2,0111 ellte:'€lig stdAnn ditches hes £.;1 wa€t't"£c o AVO WASH.RACK PAVED CONSTRUCTION ENTRANCE No Scale 41 3 21 1 21 1 A iIto ce U) Lu IW z 0z O 0 0 Zee' I-II 0 Q � I 0 H v N � co c ai LO t4 > 0) E C'4 E W N p co CD CIL F 1! ■ C3.0 4/3/17 © GRIMM AND PARKER, P.C. 2014 A L� O Q � CY3 �-�_ D W U ® C/3 ULj Elf ULJ W L1 1 C/3 __j_W_1 OJw C Z �, 1 1 1 C W U 11171 � t/3 DATE DESCRIPTION 4/3/2017 REVISION '/13/2017 REVISION 8/1/2017 REVISION 9/6/2017 REVISION 3/30/2018 REVISION 5/3/20181 REVISION C3.0 4/3/17 © GRIMM AND PARKER, P.C. 2014 A I 0 9 0 I Ee I A 1 A X w © GRIMM AND PARKER, P.C. 2014 TDEVELOPED DRAINAGE AREA < 1.:50 SH1#LLOW `�R.r f '►: .� .. �_ ♦ ice.::' '` CONCENTRATED J. 81 71 61 5 41 3 SUMMARY FROM RUNOFF REDUCTION SPREAD SHEET (SEE CALC. BOOK FOR VRRM SPREAD SHEET): TOTAL ON SITE DISTURBED ACREAGE: 0.61 ACRES PRE -DEVELOPMENT LAND COVER: 01.46 AC TURF 0.15 AC IMPERVIOUS POST -DEVELOPMENT LAND COVER: 0.34 AC TURF 0.27 AC IMPERVIOUS REQUIRED REMOVAL: 0,.26 LB/YR SURPLUS REMOVAL: A SURPLUS REMOVAL OF 0.41 LB/YR HAS BEEN ACHIEVED ON THE WOODBROOK ELEMENTARY SCHOOL WP0201600074. 0.26 LB/YR OF THAT SURPLUS REMOVAL WILL BE APPLIED TO THIS PROJECT, AS OWNERSHIP FOR BOTH PARCELS IS THE SAME, THE ALBEMARLE COUNTY SCHOOL BOARD, PER 9VAC25-870-69 SECTION A PART 5. FA WATER QUANTITY CALCULATIONS (SEE CALC. BOOK FOR ROUTING): WATER QUANTITY IS ADDRESSED THROUGH MODIFICATION OF THE EXISTING STORMWATER MANAGEMENT FACILITY. THE FACILITY WILL BE EXCAVATED DEEPER AND SLIGHTLY WIDER AND THE OUTFALL STRUCTURE WILL BE MODIFIED. THE MODIFIED FACILITY WILL DETAIN AND RELEASE STORMWATER AT THE APPROPRIATE RATE FOR CHANNEL AND FLOOD PROTECTION REQUIREMENTS. CHANNEL PROTECTION (ENERGY BALANCE): THE ENERGY BALANCE EQUATION HAS BEEN APPLIED TO THE 1 YEAR STORM FOR THE 3.55 ACRE DRAINAGE AREA TO THE EXISTING POND. QDEVELOPED < 0.80*(QPRE-DEVELOPED*RVPRE-DEVELOPED)/RVDEVELOPED 3.74 CFS <_ 0.80*(5.03 CFS*0.381 AC\FT)/(0.400) AC\FT = 3.83 CFS QDEVELOPED IS 3.74 CFS WHICH IS LESS THAN THE 3.83 CFS SATISFYING THE ENERGY BALANCE EQUATION. FLOOD PROTECTION: POST -DEVELOPED Qjo <_ PRE -DEVELOPED Q10 OK 12.28 CFS (POST -DEVELOPED Qjo) <_ 13.07 CFS (PRE -DEVELOPED Quo) MAINTENANCE NARRATIVE: THE FOLLOWING INSPECTIONS AND MAINTENANCE SHALL BE PREFORMED ANNUALLY OR WHENEVER A POTENTIAL PROBLEM IS OBSERVED: • INSPECT POND, DAM, FOREBAY, RISER AND PIPE SYSTEM FOR SEDIMENT ACCUMULATION, DEBRIS AND TRASH. • REMOVE ANY DEBRIS OR TRASH IN THE SYSTEM DREDGE FOREBAY AND OR POND WHEN SEDIMENT DEPOSITS ACCUMULATE TO MORE THAN 6" FROM ORIGINAL BOTTOM ELEVATION. • INSPECT FACILITY FOR VEGETATION. ONLY GRASS SHALL BE ALLOWED TO GROW IN THE FACILITY. GRASS SHOULD BE MOWED AT LEAST TWICE', A YEAR AND GRASS CLIPPING SHOULD BE REMOVED. REMOVE ANY OTHER VEGETATION. • INSPECT RISER AND PIPE SYSTEM TO ENSURE THAT ALL COMPONENTS ARE IN GOOD CONDITION AND FUNCTIONING ACCORDING TO ORIGINAL DESIGN. REPAIR ANY DAMAGE OR DETERIORATION AS NECESSARY. • INSPECT DAM FOR ANY SIGNS OF DAMAGE, SEEPAGE OR ANY VEGETATION WHOSE ROOTS MAY CAUSE HARM TO DAM. REPAIR DAM AND REMOVE VEGETATION AS NECESSARY. • INSPECT OUTFALL FOR EROSION AND OBSTRUCTIONS. REPAIR AND REINFORCE ANY EROSION AND REMOVE OBSTRUCTIONS. MODIFIED EXISTING STORMWATER MANAGEMENT FACILITY DETAIL No Scale 24" LONG EPDXY C 24" TW ELEV. 391.00 GABION BASKET FOREBAY WALL No Scale } �AN 8 WE,: w Coe SIDE V W k 7x : } r f , _:. , xL4ti . 0z a 1 z s r 12 »n,a....z..,,,A.,,� .�:w.�f' „�.-.-..,tee::awe,�,,..,.:..:3�.��.,....a..>,.,.�.,.. �o >o� �.....•....... a ......... .....�,,.,..:.,w,.%::,. >M.....� 5 3� 5.�`:}' �r�§5 �:' xF s fi .. f 6it,...� .._ s s" 3 1 f L1 _ 1F ka - Roo£", 38 1/4' (CODE 07) 38 1/4" (CODE 07) 7 1/2" (CODE 01) 2 71 61 51 41 31 2 1 Y ORA1G T J. 7ARSfht L fz9'Nros 5/3 /1F a IM �w, I H CY) i N N � N < Cn M C vL >0') E C\1 E O d s. (aN pm 0) W p NT CO cu CL I GP #21487.10 0 F— iG 1— �7 Lu 1 -i C/D _I CD t.,r� O ��. D C� U3 C) CL "_� W0 W Lu LU J L z CIO Lu _ J~� W 0 C:) c oCko-0 C43—� DATE DESCRIPTION 4/3/2017 REVISION '/13/2017 REVISION 8/1/2017 REVISION 9/6/2017 REVISION 3/30/2018 REVISION 5/3/2018 REVISION C64/3/17 ■ O Q GRIMM AND PARKER, P,C. 2014 A Coe LuLu Lu zx � 0z a �o >o� K I H CY) i N N � N < Cn M C vL >0') E C\1 E O d s. (aN pm 0) W p NT CO cu CL I GP #21487.10 0 F— iG 1— �7 Lu 1 -i C/D _I CD t.,r� O ��. D C� U3 C) CL "_� W0 W Lu LU J L z CIO Lu _ J~� W 0 C:) c oCko-0 C43—� DATE DESCRIPTION 4/3/2017 REVISION '/13/2017 REVISION 8/1/2017 REVISION 9/6/2017 REVISION 3/30/2018 REVISION 5/3/2018 REVISION C64/3/17 ■ O Q GRIMM AND PARKER, P,C. 2014 A