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HomeMy WebLinkAboutWPO202100031 Plan - VSMP 2021-06-02HENLEY MIDDLE SCHOOL MODULAR CLASSROOM ADDITION AND RENOVATION SITE DATA: TAX MAP PARCEL: 05600-00-00-017AO LIMITS OF DISTURBANCE: 0.57 ACRES ZONING: R1 RESIDENTIAL SETBACK: 75' FRONT 25' SIDE 35' REAR MAGISTERIAL DISTRICT: WHITE HALL SOURCE TOPOGRAPHY: TIMMONS GROUP, OCT 2019 DATUM: HORIZONTAL: NAD83 VIRGINIA STATE GRID SOUTH ZONE VERTICAL: NAVD88 ESTABLISHED THROUGH LEICA SMARTNET BUILDING HEIGHT: 18.33' BUILDING AREA: 7,750 SF PROPOSED USES: MODULAR CLASSROOM ADDITION AND ASSOCIATED SITE WORK WETLAND IMPACTS: NONE WATER SUPPLY: PRIVATE SANITARY SEWER: EXISTING SEWER SYSTEMS DRAINAGE DISTRICT: LICKINGHOLE CREEK WATER SUPPLY WATERSHED THERE ARE NO CRITICAL SLOPES LOCATED WITHIN THE PROJECT LIMITS. THERE ARE NO CONSTRUCTION ACTIVITIES PROPOSED WITHIN THE 100-YR FLOODPLAIN. THE SITE IS LOCATED IN A WATER SUPPLY PROTECTION DISTRICT. VSMP PLAN COUNTY OF ALBEMARLE, VIRGINIA ALBEMARLE COUNTY PUBLIC SCHOOLS DISTRICT 05/10/2021 691 King Family Vineyards, Old Trail Golf Club MOUNTAIN HARVEST FARMS p Yancey Mills azs BI4 CASTLEBERRY COURT 0 VILLAGE EEI PARK VIEW BROOKWOOD OLD TRAIL WHITE OAKS a Patina Wealth FOREST GLEN v 2ao CORY FARM CLOV --ville MOUNTAIN VI VIEW 0 675 VICINITY MAP SCALE 111:20001 SITE LOCATION 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 AVE. SUITE 200, CHARLOTTESVILLE, VA 22903 CONTACT: JOHNATHAN SHOWALTER, P.E TELEPHONE: 434-327-1681 JONATHAN.SHOWALTER@TIMMONS.COM Sheet List Table Sheet Number Sheet Title CO.0 COVER C1.0 NOTES & DETAILS C2.0 EXISTING CONDITIONS & DEMOLITION PLAN C3.0 EROSION & SEDIMENT CONTROL NOTES & DETAILS C3.1 EROSION & SEDIMENT CONTROL NOTES & DETAILS C3.2 EROSION & SEDIMENT CONTROL PLAN - PHASE I C3.3 EROSION & SEDIMENT CONTROL PLAN - PHASE II C4.0 LAYOUT AND UTILITY PLAN C5.0 GRADING AND DRAINAGE PLAN C6.0 STORMWATER MANAGEMENT PLAN C6.1 STORMWATER CALCULATIONS TOTAL # OF SHEETS: 11 APPROVED by the Albemarle County Community Dev 12opment Department Date 6 1 SIGNATURE PANEL APPROVAL DATE DEPARTMENT OF COMMUNITY DEVELOPMENT PLANNING & ZONING ENGINEERING INSPECTIONS ARCHITECTURAL REVIEW BOARD DEPARTMENT OF FIRE AND RESCUE ALBEMARLE COUNTY SERVICE AUTHORITY VIRGINIA DEPARTMENT OF TRANSPORTATION :179G1:i1LTA lqkill w1- \LTH Off, t' ; u\.1THA\ I1. SHOWALTER � Lic. No. 040=057151 05/10/2021 �t�4 At �C,\ am O oc H Z O a U U IU W O Z O W Ii DATE 05/10/2021 DRAWN BY AF DESIGNED BY AF CHECKED BY JS SCALE AS SHOWN 37 0 0 a J U oC Q J Z) 0 0 i W J z W 2 Q� LU 0 U IOB NO. 44694.005 SHEET NO. Co. 0 ACSA GENERAL WATER & SEWER CONDITIONS JUNE 27, 2019 1. WORK SHALL BE SUBJECT TO INSPECTION BY ALBEMARLE COUNTY SERVICE AUTHORITY (ACSA) INSPECTORS. THE CONTRACTOR WILL BE RESPONSIBLE FOR NOTIFYING THE PROPER ACSA OFFICIALS AT THE START OF THE WORK. 2. THE ALBEMARLE COUNTY SERVICE AUTHORITY SHALL HAVE ACCESS TO USE THE AIRSPACE ABOVE THE LOCATIONS OF CONSTRUCTION FOR THE FLIGHT OF UNMANNED AERIAL VEHICLES FOR THE PURPOSE OF IMAGERY COLLECTION. 3. THE LOCATION OF EXISTING UTILITIES ACROSS THE LINE OF THE PROPOSED WORK ARE NOT NECESSARILY SHOWN ON THE PLANS AND WHERE SHOWN ARE ONLY APPROXIMATELY CORRECT. THE CONTRACTOR SHALL, ON HIS OWN INITIATIVE, LOCATE ALL UNDERGROUND LINES AND STRUCTURES AS NECESSARY. 4. ALL MATERIALS AND CONSTRUCTION SHALL COMPLY WITH THE CURRENT EDITION OF THE GENERAL WATER AND SEWER CONSTRUCTION SPECIFICATIONS, AS ADOPTED BY THE ACSA. 5. DATUM FOR ALL ELEVATIONS SHOWN IN NATIONAL GEODETIC SURVEY. 6. THE CONTRACTOR SHALL BE RESPONSIBLE FOR NOTIFYING MISS UTILITY (1-800-552-7001). 7. ALL WATER AND SEWER PIPES SHALL HAVE A MINIMUM OF THREE AND A HALF (3.5) FEET OF COVER MEASURED FROM THE TOP OF PIPE, OVER THE CENTERLINE OF PIPE. THIS INCLUDES ALL FIRE HYDRANT LINES, SERVICE LATERALS AND WATER LINES, ETC. 8. ALL WATER AND SEWER APPURTENANCES ARE TO BE LOCATED OUTSIDE OF ROADSIDE DITCHES. 9. VALVES ON DEAD END LINES SHALL BE RODDED TO PROVIDE ADEQUATE RESTRAINT FOR THE VALVE DURING A FUTURE EXTENSION OF THE LINE. 10. TREES ARE NOT PERMITTED IN THE ACSA EASEMENT. 11. THE CONTRACTOR SHALL BE RESPONSIBLE TO COMPLY WITH THE NO -LEAD REGULATION REGARDING BRASS FITTINGS EFFECTIVE JANUARY 4, 2014 (SENATE BILL 3874 WHICH AMENDS THE SAFE DRINKING WATER ACT). 12. THE SEWER LATERAL BEYOND THE CONNECTION AT THE SEWER MAIN SHALL BE PRIVATE. THE SEWER LATERAL STUB -OUT SHALL UNDERGO THE ACSA LOW-PRESSURE AIR TEST TO SATISFY COUNTY TESTING REQUIREMENTS. VISUAL INSPECTION OF THE SEWER LATERAL STUB -OUT SHALL BE WITNESSED BY THE COUNTY BUILDING INSPECTIONS DEPARTMENT. THIS INSPECTION SHALL OCCUR UNDER AN "OTHER PLUMBING"PERMIT WHICH MUST BE OBTAINED BY THE CONTRACTOR. 13. THE SEWER LATERAL BEYOND THE CONNECTION AT A MANHOLE SHALL BE PRIVATE. VISUAL INSPECTION AND PRESSURE TESTING OF THE SEWER LATERAL SHALL BE WITNESSED BY THE COUNTY BUILDING INSPECTIONS DEPARTMENT. THIS INSPECTION SHALL OCCUR UNDER AN "OTHER PLUMBING" PERMIT WHICH MUST BE OBTAINED BY THE CONTRACTOR. 14. THE FIRE SPRINKLER MAIN DOWNSTREAM OF THE GATE VALVE IS PRIVATE. VISUAL INSPECTION AND TESTING OF THE FIRE SPRINKLER MAIN DOWNSTREAM OF THE GATE VALVE SHALL BE WITNESSED BY THE COUNTY BUILDING INSPECTIONS DEPARTMENT. THIS INSPECTION SHALL OCCUR UNDER AN "OTHER PLUMBING" PERMIT WHICH MUST BE OBTAINED BY THE CONTRACTOR. 15. ALL FLUSHING OF FIRE SPRINKLER MAINS SHALL NOT OCCUR UNTIL APPROVAL IS GIVEN BY THE ACSA. 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 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 TO THE HOURS OF 7:OOAM TO 9:00PM. 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. 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. 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 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) GENERALNOTES 1. CONTRACTOR SHALL COORDINATE ALL REQUIREMENTS FOR AS BUILT DOCUMENTATION, AS REQUIRED BY THE LOCALITY. THIS INCLUDES, BUT IS NOT LIMITED TO, TESTING, INSTALLATION DOCUMENTATION, SURVEY, ETC. ALL REQUIREMENTS SHALL BE DISCUSSED WITH THE LOCALITY PRIOR TO THE BEGINNING CONSTRUCTION. 2. ALL MATERIALS AND CONSTRUCTION SHALL BE IN ACCORDANCE WITH CURRENT VIRGINIA DEPARTMENT OF TRANSPORTATION'S SPECIFICATIONS AND STANDARDS. 3. 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. VDOT IS TO RECEIVE WRITTEN NOTIFICATION 48 HOURS PRIOR TO COMMENCING WITH INITIAL CONSTRUCTION ACTIVITIES. 5. THE CONTRACTOR SHALL VERIFY THE ELEVATIONS OF ALL POINTS OF CONNECTION OR PROPOSED WORK TO EXISTING CURBS, SANITARY LINES, WATERLINES, ETC, PRIOR TO CONSTRUCTION. 6. 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'S REPRESENTATIVE, BACKFILLED WITH SUITABLE MATERIAL AND COMPACTED IN ACCORDANCE WITH SPECIFICATIONS. 7. ALL STORM SEWER DESIGN AND CONSTRUCTION TO BE IN ACCORDANCE WITH VDOT STANDARDS. 8. 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. 9. 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. 10. ALL CONCRETE SHALL BE A3-AE (AIR ENTRAINED 3,000 PSI), UNLESS OTHERWISE NOTED. 11. ALL ENTRANCES ARE TO BE DESIGNED AND CONSTRUCTED IN ACCORDANCE WITH CURRENT VDOT STANDARDS. 12. 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 EXPLANATION SHALL ACCOMPANY THE REVISED PLANS AND/OR THE DRAINAGE CALCULATIONS, WHICH MUST BE SUBMITTED AND APPROVED BY THE ENGINEER. 13. 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. 14. CASING SLEEVES SHALL BE PLACED AT ALL ROAD CROSSINGS FOR GAS, POWER, TELEPHONE AND CABLE TV SERVICE TRUNK LINES. 15. THE INSTALLATION OF SEWER, WATER, AND GAS MAINS (INCLUDING SERVICE LATERALS AND SLEEVES) SHALL BE COMPLETED PRIOR TO THE PLACEMENT OF AGGREGATE BASE COURSE. 16. VDOT & ALBEMARLE COUNTY APPROVAL OF CONSTRUCTION PLANS DOES NOT PRECLUDE THE RIGHT TO REQUIRE ADDITIONAL FACILITIES AS DEEMED NECESSARY. 17. VDOT 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'S REPRESENTATIVE FOR INSPECTION FOR THE AGGREGATE BASE COURSE(S) 48 HOURS PRIOR TO APPLICATION OF THE SURFACE COURSE(S). 18. 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 SPECIFICATIONS. 19. THE SCHEDULING OF AGGREGATE BASE INSTALLATION AND SUBSEQUENT PAVING ACTIVITIES SHALL ACCOMMODATE FORECAST WEATHER CONDITIONS PER SECTION 315 OF THE ROAD AND BRIDGE SPECIFICATIONS. 20. THE OWNER'S 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). 21. A GEOTECHNICAL ENGINEER IS TO ASCERTAIN CAUSE AND CERTIFY RECOMMENDED METHOD OF REPAIR FOR ALL PAVEMENT STRUCTURAL FAILURES PRIOR TO STATE ACCEPTANCE. 22. ALL VEGETATION AND ORGANIC MATERIAL IS TO BE REMOVED FROM THE PROPOSED PAVEMENT LIMITS PRIOR TO CONDITIONING OF THE SUBGRADE. 23. CERTIFICATION AND SOURCE OF MATERIALS ARE TO BE SUBMITTED TO THE OWNER'S REPRESENTATIVE FOR ALL MATERIALS AND BE IN ACCORDANCE WITH THE ROAD AND BRIDGE SPECIFICATIONS, AND ROAD AND BRIDGE STANDARDS. 24. APPROVAL OF A DETAILED CONSTRUCTION SEQUENCING/MAINTENANCE OF TRAFFIC NARRATIVE FOR THE WORK ZONE IS A PREREQUISITE FOR ISSUANCE OF A LAND USE PERMIT ALLOWING ACCESS TO AND CONSTRUCTION WITHIN VDOT MAINTAINED RIGHT OF WAY. (N/A) 25. GRADE LINES ON PROFILES DENOTE FINISHED GRADE OF CENTER LINE OF ROAD. 26. ALL APPROACH GUTTERS TO SAG INLETS SHALL MAINTAIN A MINIMUM SLOPE OF 0.004 ft./ft. 27. WHERE A TYPE "B" NOSE IS SPECIFIED ON AN INLET IN CONJUNCTION WITH ROLL FACE CURB AND GUTTER OR CG-7, THERE SHALL BE A 20' TRANSITION ON EACH SIDE OF THE INLET. (N/A) 28. CONTRACTOR SHALL PROVIDE A SEQUENCE OF CONSTRUCTION/MAINTENANCE OF TRAFFIC PLAN IN ACCORDANCE WITH THE STANDARDS AND GUIDELINES CONTAINED IN THE 2011 EDITION OF THE VIRGINIA WORK AREA PROTECTION MANUAL FOR REVIEW BY THE ENGINEER, OWNER'S REPRESENTATIVE, AND VDOT PRIOR TO STARTING WORK THAT IMPACTS TRAFFIC ON STATE ROADS. 29. ALL NEW HANDICAP ACCESSIBLE REQUIREMENTS ON -SITE AND WITHIN ALL NEW STRUCTURES SHALL COMPLY WITH THE 2015 UNIFORM STATEWIDE BUILDING CODE, 2015 VIRGINIA CONSTRUCTION CODE, AND ICC/ANSI A117.1-03. 30. THE CLEAR ZONE IS TO BE FREE OF STORED MATERIALS AND PARKED EQUIPMENT. 31. HORIZONTAL AND VERTICAL SIGHT DISTANCES SHALL BE FREE OF PARKED VEHICLES. 32. ALL EXCAVATED AREAS WITHIN THE CLEAR ZONE THAT HAVE A DEPTH GREATER THAN 6" SHALL HAVE A 6:1 STONE WEDGE PLACED AT THE END OF THE DAY. 33. RETAINING WALLS GREATER THAN 3 FEET IN HEIGHT REQUIRE A SEPARATE BUILDING PERMIT. WALLS EXCEEDING 4 FEET IN HEIGHT REQUIRE A STAMPED ENGINEERED DESIGN ALSO. WALLS REQUIRE INSPECTIONS AS OUTLINED IN THE USBC. 34. BUILDINGS AND STRUCTURES BUILT BEFORE JANUARY 1 1985 MUST HAVE AN ASBESTOS SURVEY PERFORMED IN ORDER TO APPLY FOR A PERMIT. ASBESTOS REMOVAL PERMITS ARE REQUIRED IF POSITIVE FOR SUCH SUCH FROM ALBEMARLE COUNTY AND VDOLI. CONTACT VDOLI FOR ADDITIONAL REQUIREMENTS AND PERMITS FOR DEMOLITION PROJECTS. BLASTING NOTES 1. BLASTING SHALL NOT BE PERMITTED ON THIS PROJECT. 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 ENGINEER. 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. SITE PLAN LEGEND w WATER 101 STORM PIPE 100 STORM MANHOLE D 100 DROP INLET & STRUCTURE NO. CURB CURB & GUTTER _ = LIMITS OF DISTURBANCE -X FENCE XXX MAJOR CONTOUR XXX MINOR CONTOUR f TC 725.94 PROPOSED SPOT ELEVATION 10 PARKING COUNT GRADING TC = TOP OF CURB EP = EDGE OF PAVEMENT TW = TOP OF WALL BW = BOTTOM OF WALL TS = TOP OF STAIRS BS = BOTTOM OF STAIRS 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. CONCRETE SIDEWALK PAVEMENT SECTION No Scale 2" BITUMINOUS CONCRETE SURFACE COURSE - SM-9.5A (PLACED IN SINGLE LIFT) 4" TYPE 21 B, AGGREGATE BASE COURSE COMPACTED SUBGRADE c= DENOTES LIGHT DUTY ASPHALT PAVEMENT ON PLANS LIGHT DUTY ASPHALT PAVEMENT SECTION No Scale r LxLTH OF L of 0 �c� UN ATRX M. SHOH'ALTER Lie. No. 0402057151 'q+ 05/10/2021 CL O ce z O x H Z O a v rn w 0 Z O V) w of n n DATE 0511012021 DRAWN BY AF DESIGNED BY AF CHECKED BY JS SCALE AS SHOWN 0 0�/ V/ J U LL J D 0 0 V / 37 W J z w 2 JOB NO. 694.( SHEET NO. C1.0 SD INLET (1.5' DIA. NYLOPLAST) TOP=676.50' INV. IN=670.40' 12"HDPE \ INV. OUT=670.25' 12" HDPE \ BOT=668.63' \ 1 \ 1 \ � 1 \ \ I \ \ V I 1 \ \ - - 678- - - - - - _ _ - - - - - - --- - - - - - �- - - - - - _-678- - - - - - - - - - - - - - - - - - \\ \\ \\\ \ \\\ S\PINLET(20'DIA. \\ \I \` \ \I \\\ \ a \ \ \ \ \\\ NY¢OPLAST) \ \ I SD INLET (1.5' DIA. N OP 676 a 1/ 1 \ \ \ \ \ \ O -c� o TOP,67752' \ I \ I}/ \ \ \ \ \ O 73 / INV. 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LOCATION OF SEWER LATERAL OPENING THROUGH BLDG WALL BASED ON 2004 HENLEY MIDDLE SCHOOL O 2 2 (BRICK SPAN OVERHEAD) ADDITIONS AND RENOVATION PLAN. iJ ro / --- -_- - - 0 I - - - - - - - - - - BLD. LINE PRESUMED LOCATION OF WATERLINE BASED ON FIELD EVIDENCE (NOT MARKED / MAPPED) MUL TI-LEVEL BRICK & FRAME SCHOOL FACILITY HENLEY MIDDLE SCHOOL (5880 ROCKFISH GAP TPKE.) r--- -®---\ \—MHS TOP=682.72' INV. 1N-673.36' 8" PVC \ / \ EP INV OUT=673.24' 8" PVC ®\ 1 U 1 m \\\ 11 \ \ W ASPHALT \ (PARKING) \ I I / FFE=684.18' CO%VC. SWK I HANDRAIL SD INLET (I.5' DIA. NYLOPLAST) TOP=679.88' INV. OUT=675.50' 15"RCP el ��LALTH p�. `/ o y' �, ;U\.%THAN N. SHOW'ALTER y l.,c. No. 0401-057151 'q+ 05/10/2021 `•srS/L1NA1 G� CL O ce z O f f r., DATE 0511012021 DRAWN BY AF DESIGNED BY AF CHECKED BY JS SCALE 1"=20' LL Z) 0 O U) W J z w SCALE 1"=20' 0 20' 40' H IOB NO 694.1 SHEET NO. C2.0 EROSION AND SEDIMENT CONTROL NARRATIVE: PROJECT DESCRIPTION THIS PROJECT INCLUDES THE CONSTRUCTION OF A MODULAR CLASSROOM ADDITION, SITE IMPORVEMENTS, AND ASSOCIATED UTILITIES & LANDSCAPING. LIMITS OF CLEARING AND GRADING ARE 0.57 ACRES. ADJACENT PROPERTY THE PROPERTY IS BOUNDED BY RESIDENTIAL BUILDINGS TO THE NORTH, CROZET AVENUE TO THE EAST, AND ROCKFISH GAP TPKE TO THE SOUTH AND OLD TRAIL DRIVE TO THE WEST. EXISTING SITE CONDITIONS THE EXISTING SITE IS HENLEY MIDDLE SCHOOL. OFF-SITL AREAS NO OFFSITE AREAS WILL BE DISTURBED. ANY OFF -SITE LAND -DISTURBING ACTIVITY ASSOCIATED WITH THE PROJECT SHALL HAVE AN APPROVED ESC PLAN. CRITICAL EROSION AREAS EARLY ESTABLISHMENT AND PROPER MAINTENANCE OF PERIMETER CONTROLS WILL PROVIDE SEDIMENTATION CONTROL. ALL SLOPES STEEPER THAN 3:1 SHALL BE STABILIZED WITH BLANKET MATTING. 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. STORMWATER RUNOFF CONSIDERATIONS STORMWATER QUALITY WILL BE TREATED THROUGH THE PURCHASE OF OFFSITE CREDITS. STORMWATER QUANTITY WILL BE HANDLED THROUGH LEVEL SPREADERS RETURNING CONCENTRATED FLOW TO SHEET FLOW AS NECESSARY. 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 TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF. 2. SILT FENCE BARRIER - 3.05 SILT FENCE SEDIMENT BARRIERS SHAL L 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. DIVERSION DIKE - 3.09, 3.11 & 3.12 A TEMPORARY RIDGE OF COMPACTED SOIL TO DIVERT WATER FROM A CERTAIN AREA. 6. SEDIMENT TRAP - 3.13 A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE TO DETAIN SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS IN "WET' AND "DRY" STORAGE LONG ENOUGH FOR THE MAJORITY OF SEDIMENT TO SETTLE OUT. 6.1. MAINTENANCE OF SEDIMENT TRAP - INSPECT TRAP EMBANKMENT WEEKLY TO ENSURE IT IS STRUCTURALLY SOUND AND HAS NOT BEEN DAMAGED DURING CONSTRUCTION ACTIVITIES. THE TRAP SHALL BE CHECKED AFTER EVERY RAINFALL EVENT. ONCE THE SEDIMENT HAS REACHED THE DESIGNATED CLEANOUT LEVEL IT SHALL BE REMOVED AND PROPERLY DISPOSED OF. 7. OUTLET PROTECTION - 3.18 STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVICES PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. 8. DUST CONTROL - 3.39 DUST CONTROL IS TO BE USED THROUGH THE SITE IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT. VEGETATIVE PRACTICES: 1. TOPSOIL (TEMPORARY STOCKPILE) - 3.30 TOPSOIL SHALL BE STRIPPED FROM AREAS TO BE GRADED AND STOCKPILED FOR LATER SPREADING. STOCKPILE LOCATIONS SHALL BE LOCATED ONSITE AND SHALL BE STABILIZED WITH TEMPORARY SILT FENCE AND VEGETATION. 2. TEMPORARY SEEDING - 3.31 ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR MORE THAN 30 DAYS SHALL BE SEEDED WITH FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS. SELECTION OF THE SEED MIXTURE SHALL DEPEND ON THE TIME OF YEAR IT IS APPLIED. 3. PERMANENT SEEDING - 3.32 FOLLOWING GRADING ACTIVITIES, ESTABLISH PERENNIAL VEGETATIVE COVER BY PLANTING SEED TO REDUCE EROSION, STABILIZE DISTURBED AREAS, AND ENHANCE NATURAL BEAUTY. 4. SOIL STABILIZATION BLANKETS & MATTING - 3.36 A PROTECTIVE COVERING BLANKET OR SOIL STABILIZATION MAT SHALL BE INSTALLED ON PREPARED PLANTING AREAS OF CHANNELS TO PROTECT AND PROMOTE VEGETATION ESTABLISHMENT AND REINFORCE ESTABLISHED TURF. 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. 3. 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 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 C3.2) 1. A PRE -CONSTRUCTION MEETING IS REQUIRED WITH ALBEMARLE COUNTY E&S INSPECTOR, CONTRACTOR, 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, SILT FENCE,AND INLET PROTECTION. 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 (SLL SHEET C3.3) 1. FINE GRADE PROJECT AREA. APPLY PERMANENT SOIL STABILIZATION TO THESE AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS ACHIEVED. 2. 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 SATISFACTION OF THE E&S INSPECTOR. 3. APPLY PERMANENT SOIL STABILIZATION TO THESE AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS ACHIEVED. SILT FENCE BELOW SEDEMENT TRAP MUST BE MAINTAINED THROUGH GRADING AND CONSTRUCTION. 4. ONCE ALL CONTRIBUTING DRAINAGE AREAS TO SEDIMENT TRAP HAVE BEEN STABILIZED TRAP CAN BE REMOVED AND GRADED TO FINAL GRADE. 5. ONCE CONSTRUCTION IS COMPLETE AND ALL CONTRIBUTING AREAS ARE STABILIZED, EROSION CONTROL MEASURES CAN BE REMOVED UPON APPROVAL FROM THE E&S INSPECTOR. MINIMUM STANDARDS: AN EROSION AND SEDIMENT CONTROL PROGRAM ADOPTED BY A DISTRICT OR LOCALITY MUST BECONSISTENT 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 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 SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED BY THE TRAP. 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. 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 MAYBE 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 BL 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 O��,y:NLTH OF L O r `1U� 1TfL�X M. SHOMLTER y Lie. No, 0402057151 'Oq+ 05/10/2021 pty :10NAI Y� M E ES-5: PRIOR TO COMMENCING LAND -DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS N (INCLUDING, BUT NOT LIMITED TO, OFFSITE BORROW OR WASTE AREA), SUBMIT A SUPPLEMENTARY a c EROSION CONTROL PLAN TO THE ARCHITECT/ENGINEER AND THE CONTROLLING EROSION AND SEDIMENT > E CONTROL AUTHORITY FOR REVIEW AND ACCEPTANCE. w a; E uj ES-6: PROVIDE ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND F .V. v 3 a a „ 3 SEDIMENTATION AS DETERMINED BY THE RESPONSIBLE LAND DISTURBER. (MODIFIED NOTE) o o 2 �. W L M ES-7: ALL DISTURBED AREAS SHALL DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING OD w � u uj z LAND -DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT. > $ ,°., O H CL ES-8: DURING DEWATERING OPERATIONS, PUMP WATER INTO AN APPROVED FILTERING DEVICE. L7 W x 3 0NLn 0 ui ES-9: INSPECT ALL EROSION CONTROL MEASURES DAILYAND AFTER EACH RUNOFF- PRODUCING RAINFALL EVENT. a v MAKE ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL �U> 0 DEVICES IMMEDIATELY. Ln � , N > SOILS INFORMATION: v M ui a� 4E -ASHE LOAM, 25 TO 45 PERCENT SLOPES. 20 TO40 INCHES TO RESTRICTIVE FEATURES, EXCESSIVELY DRAINED, HYDROLOGIC SOIL GROUP: B 7B - BRADDOCK LOAM, 2 TO 7 PERCENT SLOPES. MORE THAN 80 INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, I vi HYDROLOGIC SOIL GROUP: B °C 0 0 36B - HAYESVILLE LOAM, 2 TO 7 PERCENT SLOPES. MORE THAN 80 INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, HYDROLOGIC SOIL GROUP: B d 37C3 - HAYESVILLE CLAY LOAM, 7 TO 15 PERCENT SLOPES. MORE THAN 80 INCHES TO RESTRICTIVE FEATURES, WELL DRAINED, HYDROLOGIC SOIL GROUP: B w Lu 81B - THURMONT LOAM, 2 TO 7 PERCENT SLOPES. MORE THAN 80 INCHES TO RESTRICTIVE FEATURES, HYDROLOGIC V SOIL GROUP: B z 91 - URBAN LAND, 0 TO 25 PERCENT SLOPES. 10 INCHES TO RESTRICTIVE FEATURES 0 0 0 am O ce z O f ■r i DATE 0511012021 DRAWN BY AF DESIGNED BY AF CHECKED BY JS SCALE AS SHOWN a J 0 O ~ Q > > Lu () dS Q O (n U Lu J w U< Q o Luz Lu ryoo m � J Q O JF_ Dz Q u O O f) U L1J v m U/ p Lu a Z O-6 �°z w w O J J Q Lf) zwo m a/ W a Lu 2 H JOB NO. 694.( SHEET NO. C3.0 GRAVEL FILTER 12 RUNOFF WATER WIRE MESH FILTERED WATER .Erg'...,,; •:>.r ro•'.,. . T T SEDIMENT) I I a : .. CONCRETE _— GUTTER CURB INLET 12" * GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE. SPECIFIC APPLICATION: THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE PONDING IN FRONT OF THE STRUCTURE IS NOT LIKELY TO CAUSE INCONVENIENCE OR DAMAGE TO ADJACENT STRUCTURES AND UNPROTECTED AREAS. STORMWATER INLET PROTECTION No Scale SILT FENCE DROP INLET PROTECTION EXISTING GROUND I B 12' MIN VDOT#1 COARSE AGGREGATE B *MUST EXTEND FULL WIDTH OF INGRESS AND EGRESS OPERATION �WASHRACK 1 r 5:1 EXISTING PAVEMENT MOUNTABLE BERM (OPTIONAL) 10' MIN. POSITIVE 110' MIN. DRAINAGE TO L SEDIMENT TRAPPING DEVICE 'II�IL=11`�l'L����X.��d��L�•1'k��d��}.��L�•�T��d��T.��L�•C%`� c STONE CONSTRUCTION ENTRANCE No Scale TABLE 3.31-B ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS "QUICK REFERENCE FOR ALL REGIONS" EXISTING PAVEMENT PLANTING DATES SPECIES RATE (LBS./ACRE) SEPT. 1 - FEB. 15 50/50 MIX OF ANNUAL RYEGRASS (LOLIUM MULTI-FLORUM) & 50-100 CEREAL (WINTER) RYE (SECALE CEREALE) FEB. 16 - APR. 30 ANNUAL RYEGRASS 60-100 (LOLIUM MULTI-FLORUM) MAY 1 - AUG. 31 GERMAN MILLET 50 (SETARIA ITALICA) TEMPORARY SEEDING PLANT MATERIALS No Scale TABLE 3.32-C SITE SPECIFIC SEEDING MIXTURES FOR APPALACHIAN/MOUNTAIN AREA TOTAL LBS. PER ACRE MINIMUM CARE LAWN COMMERCIAL OR RESIDENTIAL 200-250 LBS. KENTUCKY 31 OR TURF -TYPE TALL FESCUE 90-100% IMPROVED PERENNIAL RYEGRASS0-10% KENTUCKY BLUEGRASS 0-10% 2 X 4" WOOD DROP INLET WITH FRAME GRATE HIGH -MAINTENANCE LAWN p MINIMUM OF THREE (3) UP TO FIVE (5) 1 S rrd FRAME VARIETIES OF BLUEGRASS FROM MAX. — l �~ APPROVED LIST FOR USE IN VIRGINIA. 125 LBS. GENERAL SLOPE (3:1 OR LESS) '— 3' KENTUCKY 31 FESCUE 128 LBS. MIN. RED TOP GRASS 2 LBS. GATHER J` SEASONAL NURSE CROP'* 20 LBS. EXCESS AT 150 LBS. CORNERS LOW -MAINTENANCE SLOPE (STEEPER THAN 3:1) KENTUCKY 31 FESCUE 108 LBS. PERSPECTIVE VIEWS RED TOP GRASS 2 LBS. SEASONAL NURSE CROP'* 20 LBS. CROWNVETCH *" 20 LBS. FABRIC :III IWA DETAIL A ELEVATION OF STAKE AND FABRIC ORIENTATION SPECIFIC APPLICATION THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE INLET DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER THAN 5%) WHERE THE INLET SHEET OR OVERLAND FLOWS (NOT EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS IN STREET OR HIGHWAY MEDIANS. 3.07-1 PS 150 LBS * PERENNIAL RYEGRASS WILL GERMINATE FASTER AND AT LOWER SOIL TEMPERATURES THAN FESCUE, THEREBY PROVIDING COVER AND EROSION RESISTANCE FOR SEEDBED. " USE SEASONAL NURSE CROP IN ACCORDANCE WITH SEEDING DATES AS STATED BELOW: MARCH, APRIL THROUGH MAY 15TH .............................. ANNUAL RYE MAY 16TH THROUGH AUGUST 15TH......................... FOXTAIL MILLET AUGUST 16TH THROUGH SEPTEMBER, OCTOBER...... ANNUAL RYE NOVEMBER THROUGH FEBRUARY................................. WINTER RYE IF FLATPEA IS USED, INCREASE TO 30 LBS./ACRE. ALL LEGUME SEED MUST BE PROPERLY INOCULATED. WEEPING LOVEGRASS MAY ALSO BE INCLUDED IN ANY SLOPE OR LOW -MAINTENANCE MIXTURE DURING WARMER SEEDING PERIODS; ADD 10-20 LBS./ACRE IN MIXES. 3.02 3.32 1. SET THE STAKES. 2. EXCAVATE A 4"X 4" TRENCH UPSLOPE ALONG THE LINE OF STAKES. 3. STAPLE FILTER MATERIAL TO STAKES AND 4. BACKFILL AND COMPACT THE EXTEND IT INTO THE TRENCH. EXCAVATED SOIL. SILT FENCE No Scale FLOW �ILbk JIyEET FLOW INSTALLATION (PERSPECTIVE VIEW) 3' FLOW I MAX. A B 0A, \ II �\ POINTS A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION (FRONT ELEVATION) V/O WIRE SUPPORT) ERNST CONSERVATION SEEDS RIGHT-OF-WAY NON-NATIVE WOODS MIX - ERNMX-132 BOTANICAL NAME PRICE/LB 30.00% FESTUCA RUBRA 20.00% LOLIUM PERENNE, 'FASTBALL RGL' COMMON NAME CREEPING RED FESCUE 1.90 PERENNIAL RYEGRASS, 1.85 'FASTBALL RGL' (TURF TYPE) 20.00% PHLEUMPRATENSE, TIMOTHY, 'CLIMAX' 1.20 'CLIMAX' 12.00% TRIFOLIUM HYBRIDUM ALSIKE CLOVER 3.25 10.00% AGROSTIS PERENNANS, AUTUMN BENTGRASS, 14.00 ALBANYPINE BUSH - ALBANYPINE BUSH - NYECOTYPE NY ECOTYPE 8.00% AGROSTIS ALBA REDTOP 8.00 100% MIX PRICE/LB BULK: $3.61 SEEDING RATE: 40-60 LB PER ACRE WOODLAND OPENINGS THE SHADE -TOLERANT GRASSES AND CLOVER ARE GOOD FOR WOODLAND OPENINGS AND PARTIALLY SHADED SITES. MIX FORMULATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE DEPENDING ON THE AVAILABILITY OF EXISTING AND NEW PRODUCTS. WHILE THE FORMULA MAY CHANGE, THE GUIDING PHILOSOPHY AND FUNCTION OF THE MIX WILL NOT. O�� LxLTH OF L 0 UN 1TRM. SHOULTER Lie. No, 0402057151 05/10/2021 �wpA' 2 CL O oc Z O a U In W 0 Z O V) w i n DATE 0511012021 DRAWN BY AF DESIGNED BY AF CHECKED BY is SCALE AS SHOWN a J o O Q LL ~ > w �Z� o v< u u)U W J w � Uo Q Zz w m � J Q 0 J u Q o 0 U7 pow u W U7 C . H co ,^ V / =J w a � V7 z 06 �°z w w o J /FI^1 J < U) z w o W a W 2 16 a N i' STORM DRAIN INLET PROTECTION No Scale PERMANENT SEEDING MIX FOR PIEDMONT AREA SLOPE STABILIZATION SEED MIX JOB NO. 694.0 SHEET NO. C3.1 SOIL TYPE: 4E 0000 1 ` m\ \sy 'G \ \S 8�2\ \ l --------679--/// --- -- - - - - -- _ / I 1 _--678------------ -- ----_- --—— — — — — —— SOIL TYPE: 91 ---------------- �Z \ SANi IP 1 SANS 680 SANS DC \ \ \ \ \ \ \ 7 \\\\\ IP \ \ \ a\ J TS \ \ \ / \ \ ------------ �' / \ \\ \\ m ' /JQO �/------ I / — \ \ \ \ \ SP \ � CONTRACTOR TO PROVIDE DC � GRAVEL WASH RACK WITH / - - - UFO® / - - - / - - - - . \ \�� SF _ _ -� TS WATER SOURCE \ _ z LIMITS OF DISTURBANCE = 0.57 ACRES / _ _ - -� SPN �68 _ _ - - - _GIs' UFO DC SF /� / TS � � N \ UFO — - - -----------—SAiJ�2---_�SA1J�/ .ClI��\sg2�\-� \ � - - - - 2 - AMMW soft- 660 El EROSION CONTROL LEGEND LIMITS OF CLEARING AND GRADING - CE CONSTRUCTION ENTRANCE 3.02 SF SILT FENCE 3.05 �� IP ® INLET PROTECTION 3.07 TEMPORARY SEEDING 3.31 �T$� 1 DC I DUST CONTROL 3.39 * "VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK" SPECIFICATION NUMBER i� - - - - - - - - - _ ® - -683- - - - - - - - - - - - - - - - - j .. \ `\ \,K\ \\ \\ 1 \\ 1 1 1 \ I I I \ \ \ -- - \ / \ \ 1 N r 1 \ 1 11 \ \ I 1 � 1 / m 00 Q Z SCALE V=20' 0 20' 40' LXLTH OF `- O 'r L' ,11N.%THAX M. SHOW'ALTER y LIc. No. 0401-057151 05/10/2021 F 0%.L5/().%AI \-r z O f f H DATE 0511012021 DRAWN BY AF DESIGNED BY AF CHECKED BY JS SCALE 1"=20' Oz ( L OEcn Q (In z �I Quz J w UQ_j w J a 0 _U 0 U) Q o U 0oLu CZ u G U Q m Lu a Z O0.6 U 0 wLu I --I J J Q p zLu w m Lu w a 2 IOB NO 694. 1 SHEET NO. C3.2 �\ V \ \\ 1 \\ I 1 --------679—'' \— — ----------- _---678----------- —�--_-------''/ — — — — — — — — — — — — — — — — — — — — — — — — — — — — \ \\ \ J \ S won SF SANi \ \ SAN SAN — 680 / \ �__77 SAN sA> ` — — — — — — — — — — — — — — — — — — — — — — — — — — — — —GSI_ — — — LIMITS OF DISTURBANCE = 0.57 -------------sardA�- i--------- - ---- -boa- - n ■ - - - - - - - - - - - - - j \ 1 1 11 l I \ I \ \ I \ \ EROSION CONTROL LEGEND >_ LIMITS OF CLEARING AND GRADING - CE CONSTRUCTION ENTRANCE 3.02 SILT FENCE 3.05 IP ® INLET PROTECTION 3.07 PS PERMANENT SEEDING 3.32 MU MULCHING 3.35 * "VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK" SPECIFICATION NUMBER IP volo Sii•/ }� CE ' CONTRACTOR TO PROVIDE GRAVEL WASH RACK WITH SF _ _--oom MOOWATER SOURCE ® / .UFO _ _ s LJFO P UFp 000 679 660 4.7'- r - - - I \ 1 1 1 \ ul I I \ 1 •\ �/ 1 I I I I 411 / s \ \V SCALE 1"=20' 0 20' 40' ' O-N- LXLTH OF � ��. O 'r t' ,VN.%THAN N. SHUN'ALT -R y Lic. No. 0401-057151 05/10/2021 F z O f f H DATE 0511012021 DRAWN BY AF DESIGNED BY AF CHECKED BY JS SCALE 1"=20' O z O W � I QUz �a ED J QO U 0 Z U)O o U \n O0 = W U U I --I ' J 0 m W ra U-) Z / CJ U O wLU —i I --I J Q V) z Lu `O W wQ IOB NO 694.1 SHEET NO. C3.3 NOTE: FINAL WATER AND SEWER ROUTING, SIZE, COVER, MATERIAL, AND CONNECTION TO BE DETERMINED BY MEP ENGINEER AND PLUMBER. SD INLET (1.5' DIA. NYLOPLAST) TOP=676.50' INV. IN=670.40' 12"HDPE INV. OUT=670.25' 12" HOPE VA \ IS \ \ \\ SD INLET (2.O' DIA. \ \ Z \ \ \\\ NYLOPLAST) SD INLET (1.5' DIA. NYLOPLAST) �Q� \ w TOP=676.75' Il \ \ \ \\ T V IN-6.52' /I \ 1 Do \\ INV. 1N=672.4T 8" VC (W) INV. OUT=674.40' 12" HDPE INV. 1N=672.19' 8"PVC (S) BOT=673.80' OPEN/GRASS lI 1 s \\ INV. OUT=6771.77'8"VC lI 1 -� C"? \\ SOCCER FIELD AREA 1I \ z a (PART OF) TMP 56-17A �5 \ \ \�\ IRRIGATION Il 1 1 COUNTY OF ALBEMARLE SCHOOL BOARD MHs i \ \ \�\ vAL vEs (5) ii 1 1 DB. 405, PG. 346 TOP=679.68' ZONED: R1 INV. IN=673.48'8"VC INV. OUT=673.43' 8" VC gPN D \\ 1 AS IC < GEOTEXTILE LINER AND MULCH SECTION TO MATCH TO MATCHEXISTING PLAY AREA4iif \ n \ \\ SD INLET (1.5'DIA. NYLOPLAST) SARELOCATED \ \ \\\ TOP=676.78' BENCHMARK 1 ELEC. JUNGLE GYM PER \\ INV. IN=671.83' 12"HDPE TRANSFORMER MANUFACTURERS \ Z N�1 INV. OUT=671.73' 12"HDPE �� NAIL SET I (NO PAINT) ' ,SAN INSTRUCTION \ \ \ \!�, BOT=671.09' Il ELEV=677.45' SAN' \ \ \ \\\`\ I / i RELOCATED SIGN SANi (SWING) SD INLET (1.5' DIA. NYLOPLAST) lI `��� TOP=676.72' I NEW 5' WIDE PLAY LPLAYLAREA \ \ `�`� INV IN=673.72' 12676. Il \ \ X SAN OPEN / GRASS \ i AREA ENTRANCE \ �`� INV. OUT=673.57' 12"HDPE ll \ g" SOCCER FIELD AREA \ �`�BOT=672.97' S� ALL DOWNSPOUTS TO BE PLASTIC ROUTED TO LEVEL BORDER SPREADER ON GRADE ® ® 0.33' (W) \ \ �2��`\\\ II / / / \951 30' LONG RAMP WITH HANDRAILS (DESIGN BY OTHERS). F LEVEL LANDING CONC. SANS — — 4.0x3.7' Z n CONC. SWK 4.6' MODULAR CLASSROOM FFE = 684.13 WATER SERVICE FROM EXISTING 3" PRIVATE LINE. SANITARY SEWER SERVICE — SAN- / TIE TO PRIVATE / 6" LATERAL Vv - ;kTV%I%I SDINLET(L5'DIA.NYLOPLAST) TOP=676.75' / / z INV. IN=67298' 12"HDP `6 INV. OUT=67283' 1 PE N-o BOT=672.21j LEVEL LANDING AT 684.13 FROM DOORS ,� / GRA�E� TO HERE (DESIGN BY / i OTHERS) 30' LONG RAMP WITH / APPROXIMATE LOCATION ' /�P GRAVEL \HANDRAILS(DESIGN / OF 3"PVC WA TERL INE ACCESS BY OTHERS). /� SPIN / / F LEVEL LANDING 12"DEC ------ \ \ 18" DEC OF Lu' �UFO —UF Doi SG m� \ \ D JF SIGN � TIE TO EXISTING / SIDEWALK ❑ 0 ' . I I I® \ ®0 0 BLD. LINE TIE TO EXISTING SIDEWALK 20' 2.0 BRICK CLK4N APPROX. LOCATION OF SEWER LATERAL BASED ON 2004 HENLEY MIDDLE SCHOOL p Z ADDITIONS AND RENOVATION PLAN. m —2.O'x 2.0' \ BRICK CLMN. FFE=684.04' 20.0' (L) x 8.0' (W) x 10.8' (H) OPENING THROUGH BLDG. WALL W (BRICK SPAN OVERHEAD) 2 J BLD. LINE PRESUMED LOCATION OF WATERLINE BASED ON FIELD EVIDENCE (NOT MARKED / MAPPED) MULTI -LEVEL BRICK & FRAME SCHOOL FACILITY HENLEY MIDDLE SCHOOL (5880 ROCKFISH GAP TPKE) CONC. SINK 4.7' ' 0 EP MHS TOP=682.72' INV. IN=673.36' 8" PVC U p SD INLET (1.5' DIA. NYLOPLAST) TOP=679.8B' INV. OUT=673.24'8"PVC 0 a U W ASPHALT W m INV. OUT=67550'15"RCP � U (PARKING) Iyy-ff*Tf,AFPA CONC. SWK m 00 z Z oLALTH OF `' e � ��. O ti t' ,VN.tTHAN N. SHUN'ALT -R y Lic. No. 0401-057151 05/10/2021 I DATE 0511012021 DRAWN BY AF DESIGNED BY AF CHECKED BY JS SCALE 1"=20' O O VJ a U/ LL Q Z) 0 O V1 J z w 2 SCALE 1 "=20' 0 20' 40' H IOB NO. 44694.005 SHEET NO. C4.0 \`r9 \ SD INLET (I.5'DIA. NYLOPLAST) \s TOP=676.50' v2 INV. IN=670.40' 12"HOPE \ \ INV. OUT-670.25' 12" HDPE \ � \ BOT=668.63' \ Z rp,'G � SCALE 1"=20' \ \ \\\\ \ \ \ \ \ \ 0 20' 40' _ _ - - - - - - - - - 679 ` - - - - - //' - \ _ 616 / - F'•L I \ \ \\\ 1 ( \ \\ -- - ------ _� - - - - - - - - 678 - - - - - - . - - - 1� .- ----: �-_ _ --------676--------------------------------------------- li \\ `\ \ INLET (2.0' DIA. \ \ \ \ \\ NYq-OPLAST) \ I SD INLET (1.5' DIA. NYLOPLAS\T)T� l \ 1 \ \ \ TORr677 52' ` \ I TOP=676.75 INV. OUT=674.40' 12"HDPE - - \ -/ \ \\ INV. IN-672.4T 8" VC (W) \ I \ \ \ INV. W--672.19' 8"PVC (S) \ I BOT=673.80'/ y \ \ s INV OU� 6771.77 8" VC \ OPEN / GRASS - - - \ `/ \ I \\ \ \ SOCCER FIELD AREA (PART OF) TMP 56-17A \ \ \\ IRRIGATION COUNTY OF ALBEMARLE SCHOOL BOARD VALVES 5 O MHS \ / v \\ \ \ 1 \ 1 DB. 405, PG. 346 TOP=679.68' 1 ZONED: R1 INV. IN-673.48'8"VC INV. OUT=673.43' 8" \ \ \ \ ` m \\ \ X SD INLET (1.5' DIA. NYLOPLAST) \\ ` \ „ "` I\ SANS `\ \ \ \ /� TOP=676.78' \ ll BENCHMARK I / INV. IN=671.83' 12" HDPE ` lI INV. OUT4--671.73' 12"HDPE II \1 /l NAIL SET SAN�(r ± BOT=671.69' \ / l/ , - ELEV=677.45 -680^ IT WIDE X 6' LONG LEVEL SPREADER TO SD INLET (1.5' DIA. NYLOPLAST) / 1/� l / I� \ / HANDLE DRAINAGE FROM o (SWING \ I \\ 1 ��\ \ \ TOP.1676.72' ll I SANS saoso OPEN/GRASS ROOF DRAINS I 1 \ \ \ \ ��\\\ \\ INV. IN=673.72'/12"HDPE I SOCCER FIELD AREA 1 \ \ N .\ \ INV OUT=673.57' 12"HDPE 60T=672.97' /// N� saa10, PLAYAR§4 s PLASTIC BORDER SAN \ 3' W \ 8 \ \ \ �21 �`� \ / / / 61s SANS ALL DOWNSPOUTS TO BE \ TOP- LL TO \ \ \ ` ��\ SDiNLET (1.5' DIA. NYLOPLAyST�j \\� �76 FILL TO ROUTED TO LEVEL 75'_ . 6.79.60 \ \ �`� INV IN=672.98' 12"HDP \N 680.59 SPREADER ON GRADE. \ INV = 680.60' \ \ \ \� INV OUT-672.83 HOPE O t J 680 BOT=67221j �--::- MODULAR / CLASSROOM ` / `�`� V / / 0�0 FIFE = 684.13 \ LEVEL LANDING J \ `\AT C84.13TRACK LEVEL LANDING 6R P,VEL AT684.13 ----------------- -- - . 68 36 LF RAM - - - - - - - - - - CONTRACTOR TO ENSURE POSITIVE �@ ` \ / DRAINAGE AROUND MODULAR \ \ 8.330T &LOPE RQAX / APPROXIMATE LOCATION i /JQ 6LeSSROOM AND UNDER RAMP �j v OF3"PVC WATERL/NE CUT TO 30 LF RAMP @ 681.10 - - - CUT TO 680.48 8.33% SLOPE MAX 6,9 - , �679.98' 681.66' _ /�s�s� ------ -- _ _ ` ` \ 5P �� 681.68 /�� - \ \ _ 6' / / i - -/ i _-UFO sa1.60' �680.60' /-------- - -- - / 680 --_ -----------61 UFO ' 681.65'/UFO SpN - - ss/ 682 .......... _ 12" DEC 6a2 "' �/ - / \� --\ � � � �� SIGN- i-------_ J ----_ / 682.81• '-- `� -I \�-_ 683.02' ❑ . - \ \ ���� / CONC. SINK 4.6' - - - _ _ _ - CONC. SWK \.ram I / --_ ® _-----------683-- ' BLD. LINE U 2.0' 2.0' 2.0' x 2.0' \ BRICK CL WN. BRICK CLMN, FFE=684.04' 20, 0' (L) x 8, 0' (W) x 10.8' (H) APPROX. LOCATION OF SEWER LATERAL OPENING THROUGH BLDG. WALL BASED ON 2004 HENLEY MIDDLE SCHOOL Q 2 0 2 (BRICK SPAN OVERHEAD) ADDITIONS AND RENOVATION PLAN. m m I- - - - - - - - - - - BLD. LINE PRESUMED L OCATION OF WATERLINE BASED ON FIELD EVIDENCE (NOT MARKED / MAPPED) MULTI -LEVEL BRICK& FRAME SCHOOL FACILITY HENLEY MIDDLE SCHOOL (5880 ROCKFISH GAP TPKE.) \--MHS TOP-682.72' INV. IN=673.36'8"PVC 1 2 INV OUT=673.24' 8" PVC ®\ 1 I \ I \ R \ W \ I \ I 1 I l FFE=684.18' I CONC. SINK I 1 EP � SD INLET (1.5' DIA. NYLOPLAST) \ TOP=679.88' m INV. OUT=675.50' 15"RCP ASPHALT 0�0 W U (PARKING) NDRAIL \ / LALTH OF `' VN.%THAN\ SHUN'ALT-Ry l.,c. No. 040=057151 'q+ 05/10/2021 FrSILJNAI G� CL O ce Z O a v ui w 0 Z O V) W n i DATE 0511012021 DRAWN BY AF DESIGNED BY AF CHECKED BY 15 SCALE 1"=20' LL J D 0 O Q w Q LL Q Q z a C/ , LIO H JOB NO. r{.11. SHEET NO. C5.0 / \WOO 1000 0000 WATER QUANTITY WATER QUALITY ANALYSIS SANS \ ` \ \ \ ��\ `� \ \� IN THE DEVELOPED CONDITION, THE RUNOFF FROM THE (PHOSPHORUS REDUCTION REQUIRED) SUMMARY FROM RUNOFF REDUCTION SPREADSHEET �';��,1THA�N.SHUH'ALT[Ry \ � \ \ v \\ \ \ SAN� \ �( \ � DISTURBED AREA WILL FLOW OFF AS SHEET FLOW. A LEVEL SPREADER IS PROVIDED AT THE POINT OF (SEE SHEET C6.1) Lic. No. 0a0=05? I S I � � -�_ I I - 680 ^ \ ` \ \ \ ` I`\`\\ `\ CONCENTRATED DISCHARGE TO RETURN RUNOFF TO .p 05/10/2021 SAN TOTAL ON SITE DISTURBED ACREAGE: 0.57 ACRES SS/ONAI SHEET FLOW. THIS PROJECT FULFILLS THE REQUIREMENTS OF SECTION 9VAC25-970-66 SECTION D. PRE -DEVELOPMENT LAND COVER: GAG (SWING \ \v1 `\`\\\ \\ \\ 0.00 AC PEN SPACE I ME \ \ OPEN/GRASS O \I 0.53AC MANAGED TOURF 0.04AC IMPERVIOUS SOCCER FIELD AREA PLAYAREA\� �\`\\ \\ 7PLASTIC c \ \` \� ° GQA' \ \ \\ `��\\ �� POST -DEVELOPMENT LAND COVER: 0.00 AC FORESTED/OPEN SPACE � j > BORDER 0.32 AC MANAGED TURF ci E \\ I \\ \\ ` 0.25AC IMPERVIOUS w 3 r .N (J-G?'MJ \ - - REQUIRED REMOVAL: THE 0.40 LBS/YR REQUIRED REMOVAL o LL WILL BE SATISFIED BY PURCHASING NUTRIENT CREDITS. TO BE �w W t PURCHASE FROM A DEQ APPROVED CREDIT BANK IN ACCORDANCE WITH LIS CODE OF VIRGINIA 62.1-44.15:35. N j o N O H CL z In = v Lo LEVEL SPREADER TIMBER LENGTH (L) CALCULATIONS Lri v4 ul ui \ \ 0 _40 z LEVEL SPREADER - ROOF DRAINAGE: o w / Q(1 INCH) = 0.27 CFS (SEE CALCULATIONS ON C6.1) LIMITS OF ` ` \ ` ` �� / s \ -j00_�_ _ DISTURBANCE _ ` \ \ PN� / \ \ \ - , _ - _ _ _ 0.57 ACRES 5 / - _ - _ PER VIRGINIA DEQ STORMWATER DESIGN AS NOTED ON PLAN LEVEL WITH SPECIFICATION No. 2: EXISTING OR PIPE OUTFACE PROPOSED °C O C=7 _ _ _ _ --______ 8p --__ CFS INFLOW GRADE L=1CHSTO _\\ (1 INCH STORM EVENT USED) STORM � c 681----\ 18'D C L=13LFX0.162CFS =6.48'=`13' ? w ---12"DEC _ \ ` ^ \ 18" DEC "'MINIMUM LEVEL SPREADER LENGTH = 13' 6" MIN. SUMP ARE w - - - -SANS_�SriN� / / 682\ '-682-- � � SA� li � � II Q � ------' \ - mum \ � �S II�� `-_ - Ww11 I \-------�_�__ z o [yI DATE El S -�` O O --- \ - VDOT STD. No. 1 BROWN STONE, 2"-4" IN o } 05/10/2021 - CONC. SWK 4.7' - - -_ - - \ l CONC SWK 4.6' - - 1� - _ _ _ _ - / _ _ _ _ _ _ _ _ - I___------ -- r--- --- / SIZE (2)6"X6"WOOD TIMBER DRAWN -_- _-� ® / \� ®® , ®____- ____ ____--683-- LINE BLD. LINE 2.0'x2.0' COATED REBAR FILTER FABRIC 18" LONG #4 EPDXBRICK DESIGNED BY CLMN RICK CLMN JT2.0'*201BLD. FFE=684.04' .• AF 20.0' (L) x 8.0' (W) x 10.8' (H) CHECKED BY OPENING THROUGH BLDG. WALL 0 W (BRICK SPAN OVERHEAD) MAINTENANCE NOTE: INSPECTIONS SHALL TAKE PLACE ANNUALLY, • O 2 ? IDEALLY DURING THE NON -GROWING SEASON. SEDIMENTS SHOULD BE • J5 ro m CLEANED OUT OF THE LEVEL SPREADER FOREBAYS AND FLOW • SCALE MULTI -LEVEL SPUTTERS. • PRE -DEVELOPED CONDITION BRICK& FRAME SCHOOL FACILITY • 1"=20' VV. OUT=673.43' 8" VC \ 4 /gP \ \ \ �m \ \ \\\\ \ FULL LENGTH 6"X6" VARIABLE WIDTH LEVEL 18" LONG #4 EPDXY TOP TIMBERWO O j SPREADER AS NO ON PLAN(TYCOATED REBAR (TYP.) 00 s \ \ \ \ \\ SD INLET (1.5' DIA. NYLOPLAST) Q • ➢� ;AN TO.IN-6 78' z O O O I \ \ \ \ INV. OU71, L 83' 12" l IDPE INV. OUT. 671.73' 12" HDPE \ I I SAN \ \ \ \ �( \ \t� \ BOT=671.t?9' SCALE 1"=20' MIN. D BACK INTO O O GRADE. BOTTOM O O O _ _ \ \ - - 680 ^ \ ` \ \ \ �\\ \ TIMBER TO BE FULL SA�/ \ 0 20' 40' LENGTH Q z U \�) OPEN / GRASS I \ \ DRAIN�E AREA TO LEVI�P(2EADER. \ \\ REA= `\` O O O O O O O > z8AC. SOCCER FIELD AREA r - PLAYARL�4 I' \\\\ ' PLASTIC \ \ \`\� °� QAL BORDER \ �6 \ \ \ \ \ O O O O O O O VDOT STD. No. 1 BROWN STONE RIP V / �\\\ 3• W \ �_\� \ 2= \\�\ \ RAP, 2"-4" IN SIZE OU \ \ `\\ O O O O O O O w . SDiNLET(LS'DIA. NYLOPLAyST� - J INV. 1N=672.98' 12"HDP N INV. OUT=672.83' ?-IDPE PIPE OUTFALL Q w z LU BOT=672.21 j i%,I � m C MODULAR CLASSROOM FFE = 684.13 \ • , �\ Q w U LEVEL SPREADER DETAIL ` _ J \ \ / ��� \ \\ -- 000 J U Q No Scale / O ` \ )� APPROXIMATE LOCATION 0 O \ - sr - - \ \ ` \/� OF 3" PVC WATERLINE 'r �,\ N O Lu 000 U Q LIMITS OF / s�s� \ --- ____ m _ DISTURBANCE - ` \ I �� __ _ _ - 0.57 ACRES SP / / �1 0 V a - - - _ B - _ Z 611 682 SP ::o tip: ` 12" DEC \ - 68� - - - \ \ '-..µAS �a � ` O \ LLJ SAN 2 L ��S.Ai\, .:r:: _ SA�� - SA� / / \682\ Q - _ 0- LLJ co - \ r _ CONC. SWK 4.6' 1 - - ' ' - CONC. SWK - - -_ - BLD. LINE BLD. LINE 2.0' 2.0' 2.0' x 2.0' MHS ` N LFFE-684.04' BRICK CL WN. BRICK CLMN. TOP=682.72' rn \ INV IN=673.36' 8" PVC \ 1 20.0' (L) x 8.0' (w) x 10.8' (H) INV. OUT=673.24' 8"PVC ® \ APPROX. LOCATION OF SEWER LATERAL OPENING THROUGH BLDG. WALL PRESUMED LOCATION OF \ BASED ON 2004 HENLEY MIDDLE SCHOOL p W O W (BRICK SPAN OVERHEAD) WATERLINE BASED ON FIELD \\ JOB N0. ADDITIONS AND RENOVATION PLAN. ro m EVIDENCE (NOT MARKED / MAPPED) 4694.00 MUL TI-LEVEL I SHEET NO. POST -DEVELOPED CONDITION BRICK& FRAME SCHOOL FACILITY FFE=684.18' - I HENLEY MIDDLE SCHOOL CONC. Sw C6.0 0 d D g0 $0 �Z 20 o � 0� E 0 m � N a0 O 0 3 Z Z m O � � a o o a m 2 � y N y � N X m 0.0 mot.+ d N m C O m � �o 06 a 10 a 0 m o m m a m m O m 5E m � E MODIFIED CN METHOD (per DEQ2013draft SWIM handbook section 11.5.3) RAINFALLINCHES -P= 1 INCH from TR-55 table 4-II Runoff Coefficients (Rv) Hydrologic Soil Type A B C D Forest/Open Space 0.02 0.03 0.04 0.05 Managed Turf 0.15 0.20 0.22 0.25 Impervious Cover 0.95 0.95 0.95 0.95 DRAINAGEAREAAND INLET LABEL IMPERVIOUS AREA AC Soil Type MANAGED TURF AREA AC MANAGED TURFRV FOREST/OPEN SPACE AC FOREST/OPEN RV TOTAL AREA AC RV Tv-1" VOLUME CF Qa-RUNOFFVOL WATERSHED INCHES MODIFIED CN la - INITIAL ABSTRACTION la/P Tc hours qu - UNIT PEAK DISCHARGE csm/in gpTv-1"Treatment Volume Peak Discharge Henley 0.18 D 1 0 0.25 0 1 0.05 1 0.18 1 0.95 1 621 1 0.950 1 99.57 0.009 1 0.009 1 0.10 1 1000 0.27 RATIONAL METHOD 1YR RAINFALL INTENSITY= 2YR RAINFALL INTENSITY= 10YRRAINFALL INTENSITY= 4.22 5.04 6.64 IN/HR IN/HR IN/HR Q(CFS) WEIR LENGTH WEIR COEFF FLOW DEPTH -FT DEPTH INCHES LEVEL SPREADER 1" 0.27 13 3.33 0.03 0.41 WEIR 1YR 0.68 13 3.33 0.06 0.76 COMPUTATIONS 2YR 0.82 13 3.33 0.07 0.85 10YR 1.08 13 3.33 0.09 1.02 Runoff Coefficients (C) Hydrologic Soil Type A B C D Forest/Open Space 0.20 0.20 0.20 0.20 Managed Turf 0.30 0.30 0.30 0.30 Impervious Cover 0.90 0.90 0.90 0.90 DRAINAGEAREA AND INLET LABEL IMPERVIOUS AREA (AC) Soil Type MANAGED TURF AREA (AC) MANAGED TURF RV FOREST/OPEN SPACE (AC) FOREST/OPEN I RV TOTAL I AREA (AC) Average Cvalue Q1yrFlow I (CFS) Q2yrFlow (CFS) Q10yrFlow (CFS) Henley 0.18 1 D 1 0 r 0.3 1 0 1 0.05 1 0.18 0.90 1 0.68 1 0.82 1.08 Dfq Virginia Runoff Reduction Method R e-Development Compliance Spreadsheet - Versian 3.0 0 2011 BMP Standards and specifications 02013 Draft BMP Standards and Specifications Project Name: Henley MS Modular Date; 5/6/2021 Linear Development Project? No Site Information Post -Development Project (Treatment Volume and Loads) Enter Total Disturbed Area (acres) -�> 0.57 I Pre-ReDevelopment Land Cover (acres) ASol Is BSoils CSoils DSoils Totals Forest/Ope n Space (acres) - u n d istu rbe d forest/open sace Managed Turf (acres) - disturbed, graded for ardsorotherturftobe D.S3 0.53 Imperviouscover(acres) 0.04 0.04 0.57 Post -Development Land Cover (acres) ASol Is BSol ls CSoils DSoils Totals Forest/Open Space (acres) - undisturbed, 0.00 rot ect ed fare o ens ace ❑r reforested p Managed Turf (acres) - d ist urbed, grad ed for yards❑rothertuiftobe 032 0.32 Impervious Cover(acres) 0.25 0.25 Area Checkl or, OK. OK. OK. 0.57 Constants Annual Rainfall (inches) 43 Target Rainfall Event (inches) 1.00 Total Phosphoms (TP) EMC(ng/L) 0.26 Total Nitrogen (TN) EMC(ng/L) 1.86 Target TP Load (Ib/acre/yr) 0A1 Pj (unitless corredian factor) 0.90 Runoff Coefficients (Rv) Check BMP Design Specifications List: 2013 Draft Stds & Specs Linear project? No Land cover areas Entered correctly? V1 Total disturbed area entered? ♦ 1 A Soils B Soils C Soils D Soils Forest/Open Space 0.02 0.03 0.04 OL05 Managed Turf 0.15 0.20 0.22 Q25 I mpervi ous Cover 0.95 0.95 0.95 0.95 Land Cover Summary -Pre Pre-ReDevelopment Listed Adjusted' Forest/Open Space Caver(acres) 0.00 (100 Weighted Rv(forest) 0.00 0.09 %Forest 0% 0% Managed Turf Cover (acres) 0.53 0.32 Weighted Rv(turf) 0.25 0.25 % Managed Turf 93% 89% I mpervious Cover(acres) 0.04 QOf Rv(impervious) 0,95 OL95 %Impervious 7% U% Total Site Area (acres) 0.57 Q36 Site Rv 0.30 Q33 Treatment Volume and Nutrient Load Pre-ReDevelopment Treatment Volume (acre-ft) 0.0142 0.00% Pre -Re Deve lopme nt Treatme nt V olume (cubicfeet) 619 428 Pre-ReDeve(opmem TP Load (lb/yr) D.39 D.27 Pre-ReDwel opmentTP Load per acre (lb/acre/yr) 058 0.75 Base I ne TP Load (I b/yr) (0A1 lbs/acre/yr applied to pre-redevelopmentarea excluding pervious land proposed for new i mpavi aus cover) 0.15 'Adjusted Land Cover Summary: Pre ReDevelopment land cover minus perviousland cover (forest/open spaceor monoged turf) acreage proposed for new impervious cover. Adjusted total acreage is consistent with Post-ReDevelopmentacreage (minus acreage of new impervious cover). Column i shows load reduction requrement fornew impervious cover (based on Land Cover Summary -Post (Rnd) Post ReDev. & New 1 mpervious Forest/Open Space 0.00 Cover (acres) Weighted Rv(forest) 0.0D %Forest 0% Managed Turf Cover 032 Weighted Rv (turf) 0.25 % Managed Turf 56% I mpervi ous Cover (acres) D.25 Rv(impervious) 0.95 %Impervious 44% Final Site Area(wres) 0.57 Final Past DevSite Rv 0.56 Final Post - Development Treatment Volume 0.026S (acre-ft) Final Post - Development 1,153 Treatment Volume (cubicfeet) Final Post - Development TP 0.72 Load (lb/yr) Final Past Development TP Load per acre 1.27 (lb/acre/yr) Laud raver ast Post-ReDevelopment Forest/Open Space U.00 Cover(acres) Weighted Rv(forest) 0.00 %Forest 0% Managed Turf Cover 0.32 Weighted Rv (turf) 0.25 % Managed Turf 89ye ReDev-Impervious Cover (acres) OD4 Rv(impervious) 0.95 %Impervious 11% atal ReDev. Ste Area (a®es) 0-M ReDev Site Rv om Treatment Volume and Nutrient Load Nitrogen Loads (Informational Purposes Only) Post-ReDevelopment TreatmentVdume 0.0099 ( acre-ft) Post-ReDevelopment TreatmentVolume 428 (cubic feet) Post- Re Devel opine nt Load (TP) 027 (l b/K)' Pos-ReDevelopmmtTP Load per are 075 (6/are/yr) Max. Reduction Required (Below Pre- 10% ReDevelopment Load) TP Load Reduction Required for 0.03 Redeveloped Area (lb/yr) Land rover Smunary-Past Pint -Development New Impervious New Impervious Cover (acres) Rv(imper0ous) Post -Development Treatment Volume (acre-ft) Post -Development Treatment Volume (cubicfeet) Post -Development TP Load (lb/yr) 0.21 0.95 724 OA6 TP Load Reduction Required for New 0.37 Impervious Area (lb/yr) �L:\LTy 0� �. Gr 1TMN K SHOW..ALTER I i. No.040_057151 iO�+O 05/10/2021 M 0 0 rn � N N � >E W E a o 3 0 LL 5 W 0 iM Q j U m Z a - n O w ny �. z H U 30�Q Ln cd ? W w Ln = U > U1 O c ut to N lu M of a r W J O W u) � Isi DATE 0511012021 DRAWN BY AF DESIGNED BY AF CHECKED BY JS SCALE 1"=20' L O¢ Z O V U) ' ^ Z Q°z U� W Q m J U J ��a UU 0 O LULI U U U) U V 1 a 0 z V ) O U Ww LU J Q z< W m W¢ 2 0 a Vl C E O m Pre -Re Development TN Load Final Post -Development TN Load (lb/yr) 2.73 (Port-ReDevelopment&New 5.19 Impervious) (Ib/yr) AM JOB NO. 694.0 SHEET NO. C6.1