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HomeMy WebLinkAboutWPO202000017 Plan - VSMP 2021-03-30VSMP PLAN LEGEND EXISTING NEW DESCRIPTION boundaries BENCHMARK SITE PROPERTY LINE ADJACENT PROPERTY LINE VACANT PROPERTY LINE BUILDING SETBACK PARKING SETBACK ACCESS EASEMENT site text NOTES 10 10 PARKING COUNT 24 00 DIMENSIONS ground GRADING EASEMENT 31 C, 10- INDEX CONTOUR 12 INTERVAL CONTOUR 311.5 x 81 57 X SPOT ELEVATION 311.5 TC 81 TC 5 ] X TOP OF CURB ELEVATION 11.5 TW 81 TW 5 ] X TOP OF WALL ELEVATION Y JI I .INN X 81 BW 5 7 X BOTTOM OF WALL ELEVATION RETAINING WALL STAIRS building BUILDING ROAD -EDGE OF PAVEMENT ROAD- CENTERLINE ROAD -FRONT OF CURB ROAD BACK OF CURB CG-2 STANDARD 6" CURB CG-6 STANDARD 6" CURB AND GUTTER /FN /FN CG-12 STANDARD ACCESS RAMP SIDEWALK BIKE PARKING PARKING SURFACE - CROSSWALK HANDICAP ACCESSIBLE AISLE HANDICAP PARKING material 0 CONCRETE/PAVEMENT-SIDEWALK RIPRAP Now ASPHALT 0 GRASS EC-3 MATTING EC-2 MATTING WETLAND TREELINE - x x - - x x - FENCE STREAM utility UTILITY EASEMENT ♦ t UTILITY POLE ® ® LIGHT POLE -oeu OHu - -OHU oHD OVERHEAD UTILITY O MANHOLE sanitary & sewer STORM LINE Ct­ RD RD - ROOF DRAIN �C (D =Lbl DRAIN INLET DRAINAGE EASEMENT STORM DRAINAGE EASEMENT STORM SEWER EASEMENT SANITARY LINE - s s - s s - SANITARY LATERAL SANITARY EASEMENT water - w w- - w w- WATER LINE 0 0 WATER METER WATER VALVE AND BOX 4- FIRE HYDRANT WATER EASEMENT gas -ens -ens - -crs -was GAS LINE PROFFIT ROAD TOWNHOMES SOUTH OWNER/DEVELOPER Albemarle Land Development LLC 1949 Northside Drive Charlottesville, VA 22911 ZONING R15 - Residential per ZMA 201800019 SETBACKS Front: Minimum 5 ft from right-of-way or edge of sidewalk if the sidewalk is outside of right-of-way Maximum 25 ft from right-of-way or edge of sidewalk if the sidewalk is outside of right-of-way Side: Minimum 5 ft, unless the building shares a common wall Rear: Minimum 20 ft Building Separation: Minimum 10 ft, unless the building shares a common wall DISTRICT Rivanna SOURCE OF TITLE DB 5160 PG 296 DB 512 PG 516 PLAT SOURCE OF BOUNDARY AND TOPOGRAPHY Boundary & topographic survey provided by: Roger W. Ray & Associates, Inc. (April 15, 2019) w/ topography provided by Axis Geospatial, LLC (March 14, 2019) The site has been field verified by Justin Shimp P.E. on June 4th 2020. BENCHMARK Datum for topography is NAVD 88 FLOODZONE According to the FEMA Flood Insurance Rate Map, effective February 4, 2005 (Community Panel 51003CO285D) this property does not lie in a fioodplain RESERVOIR WATERSHED This site is within the Powell Creek Watershed. This site is not within a watershed of a public water supply. WATER & SANITARY SERVICES Site is served by Albemarle County Service Authority. COUNTY OF ALBEMARLE reparimem of community Development Construction Record Drawings (As -built) for VSNW The following is a fist of information required on construction record drawings for stormwater facilities (reference Water Protection Ordinance 17-422). It is preferable that the construction record drawing be prepared by someone other than the designer. Please do not provide design drawings as construction record drawings. A. A signed and dated professional seal of the preparing engineer or surveyor. B. The name and address of the firm and individual preparing the drawings on the title sheet. C. The constructed location of all items associated with each facility, and die inspection records to verify proper dimensions, materials and installation. The items include, but are not limited to the following: I. inspection Records and photographs for pipe trenches and bedding, including underdrains. 2. Video Pipe inspection for any pipes which are not accessible or viewable. 3. Updated Location with geo-coordinates of all facilities. 4. Verified Drainage Area maps for the drainage area treated, and for drainage to the facilities. 5. Current physical and topographic survey for all earthen structures. Ponds should include a survey of the pond bottom. Surveys should verify pond volumes are per design. Corrections may he required for alterations from the design. 6. Plants, location and type. 7. Plans and profiles for all culverts, Pipes, Risers, Weirs and Drainage Structures - Display the installed type of drainage structures, culvert/pipe size, weirs, materials, inlets or end treatment(s), inlet and outlet protection, alignment and invert elevations compared to design. 8. Computations: For significant deviations from design, provide scaled computations verifying that the as -built condition is equivalent or better than design. 9. Ditch Lines - Display the constructed location of all ditch lines and channels, including typical sections and linings. 10. Easements - Show all platted easements with dead book references labeled. Facilities and drainage must be within platted casements. Provide copies of recorded documents. 11. Guardrail, fences or other safety provisions - Display the constructed location of all safety provisions; fences, guardrail, including the type, length and applied end treatments, compared to design. 12. Material layers - biofilter media, stone layers, sand layers, keyways and cores must be verified as to material types and depths. Include inspection reports, boring or test pit reports and materials certifications. Biofilter media must be an approved state mix. 13. Access roads -show location of access roads, surface treatment, drainage, etc, as applicable. 14. Compaction reports are required to verify fill compaction in dams. 15. Manufacturers certifications for proprietary BMP's certifying proper installation and functioning. EXISTING USE Single Family Dwelling PROPOSED USE 40 Single Family Attached Dwelling Units, 13.6 DUA LAND USE SCHEDULE (Does not include right-of-way dedication area) EXISTING Area % Building 2,458 SF 25.3% Travelway 7,244 SF SF 74.7% Impervious Total 9,702 SF 7.6% Open space 118,416 SF 92.4% Total= 128,118 SF (2.94 ac.) PROPOSED Area % Building 33,000 SF 43.2% Travelway 43,401 SF 56.8% Impervious Total 76,401 SF 59.6% Open space 51,717 SF 40.4% Total= 128,118 SF (2.94 ac.) LIMITS OF DISTURBANCE 3.34 acres of disturbance is planned for this development WP0202000017 TAX MAP 32, PARCEL 35 ALBEMARLE COUNTY, VIRGINIA VICINITY MAPSCALE : 1rr=1000' Ad AIRPORT CENTER 9�rp nrrAd N� ii e C1 Airport Road Auto Center 's 5 DEERWOOD S Q SITE Walgreens 0 a,Gnrt S P R I N G F I E L D R,r ABINGTON The. UPS Store 0 P L A C E Target 0 ec�c Food Lion `' FOREST RIDGE TirnbeiworidGrill A 1521 FOREST LAKES a3, Map provided by Google.com SHEETINDEX C1 COVER C2 E&SC NARRATIVE C3 EXISTING CONDITIONS C4 GRADING & UTILITY PLAN C5 E&SC PLAN PH1 C6 E&SC PLAN PH2 C7 E&SC PLAN PH3 C8 E&SC DETAILS C9 PROFILES C10 DETAILS C11 PRE -DEVELOPMENT DRAINAGE C12 POST -DEVELOPMENT DRAINAGE J SHIMP ENGINEERING LAND PLANNING I SITE DESIGN I CIVIL ENGINEERING I PROJECT MANAGEMENT Design Focused Engineering 912 East High Street Phone: 434-227-5140 Charlottesville, VA 22902 shim"ngineedng.mm VSMP PLAN ALBEMARLE COUNTY, VIRGINIA PROFFIT ROAD TOWNHOMES SOUTH SUBMISSION: 2020.03.20 REVISION: 1) 2020.07.16 2) 2021.03.30 FILE NO. COVER 18.041 SHEET C1 OF 12 C1 PROJECT DESCRIPTION, GENERAL NOTES, EROSION & SEDIMENT CONTROL NOTES, AND SEQUENCE OF CONSTRUCTION PROJECT DESCRIPTION THIS PROJECT PROPOSES 40 SINGLE FAMILY ATTACHED UNITS ON THE SOUTHERN SIDE OF PROFFIT ROAD IN ALBEMARLE COUNTY. THE SINGLE FAMILY RESIDENCE CURRENTLY ON SITE IS TO BE REMOVED. THE TOTAL AREA OF DISTURBANCE IS 3.34 ACRES. THE PROJECT INVOLVES THE FOLLOWING WORK ACTIVITIES: 1. THE CONTRACTOR SHALL OBTAIN ALL LOCAL AND STATE EROSION AND SEDIMENT PERMITTING REQUIREMENTS AND MAINTAIN ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE PERMIT REQUIREMENTS. 2. INSTALLATION OF PERMANENT EROSION AND SEDIMENT CONTROL MEASURES AS SHOWN ON THE PLAN AND DETAILS. 3. GRADING AND PLACEMENT OF FILL SHALL BE IN GENERAL ACCORDANCE WITH THE PLAN. 4. ESTABLISHMENT OF PERMANENT STABILIZATION OF ALL DISTURBED AREAS. ADJACENT PROPERTIES THIS PROPERTY IS BORDERED ON THE NORTH BY PROFFIT RD; THE EAST/SOUTH BY MAPLE GROVE CHRISTIAN CHURCH; AND TO THE WEST/SOUTH BY BRIGHT BEGINNINGS PRESCHOOL. OFFSITE AREAS SOIL MAY NEED TO BE IMPORTED FROM THE SITE FROM SITES WHICH SHALL HAVE EROSION CONTROL PERMITS. SOILS THE SITE CONTAINS THE FOLLOWING SOIL TYPES: 27B - ELIOAK LOAM - 2 TO 7% SLOPES, HSG B CRITICAL AREAS THERE ARE NO CRITICAL AREAS ON SITE. EROSION & SEDIMENT CONTROLS 1. SAFETY FENCE: A PROTECTIVE BARRIER INSTALLED TO PROHIBIT UNDESIRABLE USE OF AN EROSION CONTROL MEASURE. STD. AND SPEC. 3.01. 2. CONSTRUCTION ENTRANCE: INSTALL AND MAINTAIN A CONSTRUCTION ENTRANCE, AS NECESSARY, THAT MEETS THE REQUIREMENTS OF STD. AND SPEC. 3.02 AND CONFORMS WITH THE REQUIREMENTS OF THE EROSION & SEDIMENT CONTROL PLAN. 3. SILT FENCE: INSTALL AND MAINTAIN SILT FENCE THAT MEETS THE REQUIREMENTS OF STD. AND SPEC. 3.05. THIS SILT FENCE SHALL BE INSTALLED AS SHOWN ON THE EROSION & SEDIMENT CONTROL PLAN AND ACCOMPANYING DETAILS FOR THE PURPOSE OF INTERCEPTING SILT -LADEN RUNOFF BEFORE IT IS DISCHARGED FROM THE SITE. THE SILT FENCE SHALL BE INSPECTED AND MAINTAINED TO ENSURE CONTINUED PERFORMANCE. 4. TEMPORARY SEDIMENT TRAP: A SMALL PONDING AREA, FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE OUTLET ACROSS A DRAINAGE SWALE, TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED AREAS FOR ENOUGH TIME TO ALLOW MOST OF THE SUSPENDED SOLIDS TO SETTLE OUT. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. STD. AND SPEC. 3.13. 5. TEMPORARY DIVERSION DIKE: A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA WHICH DIVERTS SEDIMENT -LADEN RUNOFF TO A SEDIMENT TRAPPING STRUCTURE. MAXIMUM EFFECTIVE LIFE IS 18 MONTHS. STD. AND SPEC. 3.09. 6. TEMPORARY SEEDING: TEMPORARY SEEDING SHALL BE APPLIED TO ALL DENUDED AREAS WITHIN SEVEN (7) DAYS TO DENUDED AREAS THAT MAY OR MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS. TEMPORARY SEEDING SHALL BE APPLIED IN CONFORMANCE WITH STD. AND SPEC. 3.31. 7. PERMANENT SEEDING: PERMANENT SEEDING SHALL BE APPLIED TO AREAS DELINEATED ON THESE PLANS WITHIN SEVEN (7) DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. PERMANENT SEEDING STABILIZES DISTURBED AREAS AND ENHANCES THE BEAUTY OF THE SITE. 8. MULCHING: APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO THE SOIL SURFACE TO PREVENT EROSION AND FOSTER THE GROWTH OF VEGETATION. ORGANIC MULCHES (STRAW) HAVE BEEN FOUND TO BE THE MOST EFFECTIVE. 9. DUST CONTROL: CONDUCT DUST CONTROL OPERATIONS NECESSARY TO MET THE REQUIREMENTS OF STD. & SPEC. 3.39 AS REQUIRED TO CONTROL SURFACE AND AIRBORNE MOVEMENT OF DUST. 10.INLET PROTECTION: INLET PROTECTION MEASURES AROUNF THE NEW INLETS SHALL BE PROVIDED IN ACCORDANCE WITH STD. AND SPEC. 3.07. SILT FENCE, STRAW BALES OR TEMPORARY STONE APPLICATIONS SHALL BE APPLIED AS APPROPRIATE FOR CURRENT GRADE CONDITIONS. 11.0UTLET PROTECTION: RIP -RAP SHALL BE PROVIDED AT THE OUTFALL OF CONVEYANCE CHANNELS, CULVERTS, AND STORM SEWERS IN CONFORMANCE WITH STD. AND SPEC. 3.18. OUTLET PROTECTION SHALL BE INSTALLED WITH ACCOMPANYING STORM SEWERS AND SHALL BE INSPECTED AFTER EACH RAINFALL EVENT AND REPAIRED IF NECESSARY, ANT SEDIMENT BUILD UP SHALL BE REMOVED. 12.CONSTRUCTION ROAD STABILIZATION: TEMPORARY STABILIZATION WITH STONE OF ACCESS ROADS, SUBDIVISION STREETS, PARKING AREAS, AND OTHER TRAFFIC AREAS IMMEDIATELY AFTER GRADING TO REDUCE EROSION CAUSED BY VEHICLES DURING WET WEATHER, AND TO PREVENT HAVING TO REGRADE PERMANENT ROADBEDS BETWEEN INITIAL GRADING AND FINAL STABILIZATION. STD. AND SPEC. 3.03. 13.STORMWATER CONVEYANCE CHANNEL: A PERMANENT CHANNEL DESIGNED TO CARRY CONCENTRATED FLOWS WITHOUT EROSION. APPLICABLE TO MAN-MADE CHANNELS, INCLUDING ROADSIDE DITCHES, AND NATURAL CHANNELS THAT ARE MODIFIED TO ACCOMMODATE INCREASED FLOWS GENERATED BY LAND DEVELOPMENT; NOT GENERALLY APPLICABLE TO MAJOR, CONTINUOUS -FLOWING NATURAL STREAMS. STD. AND SPEC. 3.17. PERMANENT STABILIZATION AND SEQUENCE OF CONSTRUCTION THE FOLLOWING ARE THE PROPOSED MANAGEMENT STRATEGIES AND DETAILED SEQUENCE OF CONSTRUCTION: PHASE 1 1. INSTALL CONSTRUCTION ENTRANCE. 2. INSTALL SEDIMENT TRAP WITH SILT FENCE AND DIVERSIONS. 3. PLACE FILL AROUND SEDIMENT TRAP TO COMPLETE TRAP CONSTRUCTION BEFORE ANY MAJOR GRADING OCCURS ON SITE. 4. CONTACT COUNTY INSPECTOR FOR APPROVAL OF FIELD CONDITIONS. 5. BEGIN MASS GRADING. 6. MAINTAIN PERIMETER CONTROLS. PHASE 2 1. INSTALL ADDITIONAL SEWER MAINS AND WATERLINE. 2. INSTALL STORM PIPING AND INLETS, BUT KEEP ALL INLETS EXCEPT A10 BLOCKED OFF UNTIL ROAD IS STABILIZED. INSTALL INLET PROTECTION AROUND A10. 3. CONNECT PIPES A6 AND A7 WITH A MATTED CHANNEL WHERE FUTURE DETENTION PIPES WILL BE INSTALLED. PLACE SILT FENCE AROUND CHANNEL. 4. STABILIZE ROAD WITH STONE AND PLACE INLET PROTECTION ON REMAINING INLETS. 5. ONCE ROAD IS STABILIZED, REMOVE SEDIMENT TRAP & DIVERSION AND FINISH CONSTRUCTION ON LOTS 22-26. PHASE 3 1. INLET PROTECTION TO REMAIN UNTIL ALL WORK ONSITE IS COMPLETE. 2. APPLY PERMANENT SEEDING. 3. WHEN SITE IS STABILIZED, INSTALL STORMTECH CHAMBERS WITH THE GUIDANCE OF AN ADS REPRESENTATIVE. 4. CALL FOR FINAL INSPECTIONS. FINAL 1. MAINTAIN EROSION CONTROLS UNTIL SITE IS STABILIZED AND COUNTY INSPECTOR HAS APPROVED REMOVAL OF CONTROLS. CONSTRUCTION MAINTENANCE THE FOLLOWING CONSTRUCTION MAINTENANCE PRACTICES SHALL BE FOLLOWED AT THE SITE. 1. ALL E&S CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAIN EVENT. ALL DEFICIENCIES IDENTIFIED DURING THESE INSPECTIONS SHALL BE CORRECTED AS SOON AS PRACTICABLE, 2. THE SILT FENCE BARRIER SHALL BE REGULARLY CHECKED FOR UNDERMINING, DETERIORATION OR SIGNIFICANT EROSION. SEDIMENT SHALL BE REMOVED AFTER EACH STORM EVENT AND WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES HALF THE HEIGHT OF THE CONTROL. 3. THE CONTRACTOR IS RESPONSIBLE FOR ADHERING TO ALL MAINTENANCE REQUIREMENTS SET FORTH IN THE CURRENT EDITION OF THE VIRGINIA SEDIMENT AND EROSION CONTROL MANUAL, OTHER APPLICABLE COMMONWEALTH OF VIRGINIA REGULATIONS AND THE PROJECT SPECIFICATIONS. 4. ALL SEEDED AREAS WILL BE REGULARLY CHECKED TO ENSURE THAT A GOOD STAND OF GRASS IS MAINTAINED. 5. AREAS WITH RIP -RAP SHOULD BE REGULARLY INSPECTED TO DETERMINE IF HIGH FLOWS HAVE DAMAGED THESE CONTROLS OR CAUSED EXCESSIVE SEDIMENT DEPOSITION. ALL AREAS SHALL BE MAINTAINED IN ACCORDANCE WITH THE REQUIREMENTS OF THIS E&S CONTROL PLAN. ENVIRONMENTAL CONTROLS 1. CONTRACTOR SHALL PROVIDE AND MAINTAIN ALL ENVIRONMENTAL CONTROL MEASURES SO AS TO COMPLY WITH LOCAL ORDINANCES, STATE AND FEDERAL LAWS AND REGULATIONS APPLICABLE TO WATER POLLUTION IN WATERS OF THE STATE AND IN INTERSTATE WATERS. 2. CONTRACTOR SHALL MINIMIZE THE POTENTIAL FOR AIR POLLUTION BY THE USE OF EMISSION CONTROL EQUIPMENT ON CONTRACTOR OPERATED EQUIPMENT, SHUT -DOWN OF MOTORIZED EQUIPMENT WHEN NOT IN USE, AND ACTIVELY CONTROLLING DUST EMISSIONS THROUGHOUT THE PROJECT. EROSION & SEDIMENT CONTROL PERMITTING CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL LOCAL AND STATE EROSION AND SEDIMENT CONTROL PERMITS AND MAINTAINING ALL EROSION AND SEDIMENT CONTROLS IN ACCORDANCE WITH THE PERMIT REQUIREMENTS. GENERAL NOTES 1. THE INFORMATION AND DATA SHOWN OR INDICATED WITH RESPECT TO THE EXISTING UNDERGROUND UTILITIES AT OR CONTIGUOUS TO THE SITE ARE BASED ON INFORMATION AND DATA FURNISHED TO THE OWNER AND ENGINEER BY THE OWNERS OF SUCH UNDERGROUND FACILITIES OR OTHERS. THE OWNER OR ENGINEER SHALL NOT BE RESPONSIBLE FOR THE ACCURACY OR COMPLETENESS OF SUCH INFORMATION OR DATA. THE CONTRACTOR SHALL HAVE FULL RESPONSIBILITY FOR CONFIRMING THE ACCURACY OF THE DATA, FOR LOCATING ALL UNDERGROUND UTILITIES, FOR COORDINATION OF THE WORK WITH OWNERS OF SUCH UNDERGROUND UTILITIES DURING CONSTRUCTION, FOR THE SAFETY AND PROTECTION THEREOF AND REPAIRING ANY DAMAGE THERETO RESULTING FROM THE WORK. ALL OF THESE CONDITIONS SHALL BE MET AT NO ADDITIONAL COST TO THE OWNER. THE CONTRACTOR SHALL CONTACT "MISS UTILITIES" OF VIRGINIA AT 1-800-552-7001 PRIOR TO THE START OF WORK. 2. WHEN WORKING ADJACENT TO EXISTING STRUCTURES, POLES, UTILITIES, ETC., THE CONTRACTOR SHALL USE WHATEVER METHODS THAT ARE NECESSARY TO PROTECT STRUCTURES FROM DAMAGE. ANY DAMAGE CAUSED BY THE CONTRACTOR OR ITS SUBCONTRACTORS SHALL BE THE CONTRACTOR'S SOLE RESPONSIBILITY TO REPAIR OR REPLACE. THIS EXPENSE IS THE CONTRACTOR'S RESPONSIBILITY. 3. REPLACEMENT OR REPAIR OF DAMAGED STRUCTURES SHALL BE AT THE CONTRACTOR'S EXPENSE. 4. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROTECTING ALL EXISTING SITE STRUCTURES FROM DAMAGE AND COORDINATING WORK SO THAT THE OWNER CAN MAKE NECESSARY ARRANGEMENTS TO MODIFY/PROTECT EXISTING STRUCTURES FROM DAMAGES, 5. THE CONTRACTOR SHALL BE RESPONSIBLE FOR NOTIFYING ALL UTILITY OWNERS, ADJACENT LAND OWNERS WHOSE PROPERTY MAY BE IMPACTED AND THE VIRGINIA DEPARTMENT OF TRANSPORTATION PRIOR TO COMPLETING ANY OFF -SITE WORK. 6. CONTRACTOR SHALL NOTIFY AND COORDINATE ALL WORK INVOLVING EXISTING UTILITIES WITH UTILITY OWNERS, AT LEAST 72 HOURS PRIOR TO THE START OF CONSTRUCTION, 7. ALL EXCAVATION FOR UNDERGROUND PIPE INSTALLATION MUST COMPLY WITH OSHA STANDARDS FOR THE CONSTRUCTION INDUSTRY (29 CFR PART 1926). 8. THE CONTRACTOR SHALL VERIFY THE LOCATIONS OF ALL BOUNDARIES, BUILDINGS, VEGETATION, AND OTHER PERTINENT SITE ELEMENTS. CONTRACTOR SHALL IMMEDIATELY REPORT ANY DISCREPANCIES BETWEEN EXISTING CONDITIONS AND CONTRACT DOCUMENTS TO THE OWNER AND ENGINEER. 9. CONTRACTOR SHALL SUBMIT FOR THE APPROVAL OF THE OWNER SUBMITTALS OF ALL SPECIFIED MATERIALS LISTED IN THE PLANS, TO INCLUDE SHOP DRAWINGS, MANUFACTURER'S SPECIFICATIONS AND LABORATORY REPORTS. THE OWNER'S APPROVAL OF SUBMITTALS WILL BE GENERAL AND WILL NOT RELIEVE THE CONTRACTOR FROM THE RESPONSIBILITY OF ADHERENCE TO THE CONTRACT AND FOR ANY ERROR THAT MAY EXIST. 10. CONTRACTOR SHALL BE RESPONSIBLE FOR OBTAINING ALL NECESSARY PERMITS, INSPECTIONS, BONDS, AND OTHER RELATED ITEMS IN ACCORDANCE WITH LOCAL AND STATE POLICY. STORMWATER MANAGEMENT NOTES: 1. CONCENTRATED ONSITE RUNOFF SHALL BE ROUTED VIA NEW STORM DRAINS INTO AN UNDERGROUND DETENTION SYSTEM WHICH WILL RELEASE RUNOFF AT RATES WHICH COMPLY WITH THE ENERGY BALANCE EQUATION 9VAC25-870-66-B(3). 2. WATER QUALITY WILL BE ADDRESSED BY THE USE OF STORMTECH MC-4500 CHAMBERS WITH AN ISOLATOR ROW TO ACHIEVE 40% PHOSPHOROUS REMOVAL AND BY THE PURCHASE OF NUTRIENT CREDITS. AN AMOUNT FOR 1.37 LBS/YR PHOSPHOROUS CREDITS SHALL BE PURCHASED TO MEET THE VRRM REDEVELOPMENT NUTRIENT REMOVAL REQUIREMENTS PER 9VAC25-870-63. 3. BMP COORDINATES: • STORMTECH MC-4500: 38.1306874,-78.4315852 STORMTECH INSPECTION & MAINTENANCE NOTES: INSPECT EVERY 6 MONTHS DURING THE FIRST YEAR OF OPERATION. ADJUST THE INSPECTION INTERVAL BASED ON PREVIOUS OBSERVATIONS OF SEDIMENT ACCUMULATION AND HIGH WATER ELEVATIONS. CONDUCT JETTING AND VACTORING ANNUALLY OR WHEN INSPECTION SHOWS THAT MAINTENANCE IS NECESSARY. 1. INSPECT ISOLATOR ROW FOR SEDIMENT 1.1. REMOVE COVER FROM STRUCTURE AT UPSTREAM END OF ISOLATOR ROW 1.2. USING A FLASHLIGHT, INSPECT DOWN THE ISOLATOR ROW THROUGH OUTLET PIPE 1.2.1. MIRRORS ON POLES OR CAMERAS MAY BE USED TO AVOID A CONFINED SPACE ENTRY 1.2.2. FOLLOW OSHA REGULATIONS FOR CONFINED SPACE ENTRY IF ENTERING MANHOLE 1.3. IF SEDIMENT IS AT, OR ABOVE, 3" PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. 2. CLEAN OUT ISOLATOR ROW USING THE JETVAC PROCESS 1.1 A FIXED CULVERT CLEANING NOZZLE WITH REAR FACING SPREAD OF 45" OR MORE IS PREFERRED 1.2 APPLY MULTIPLE PASSES OF JETVAC UNTIL BACKFLUSH WATER IS CLEAN 1.3 VACUUM STRUCTURE SUMP AS REQUIRED 3. REPLACE ALL COVERS, GRATES, FILTERS, AND LIDS; RECORD OBSERVATIONS AND ACTIONS. 3. INSPECT AND CLEAN BASINS AND MANHOLES UPSTREAM OF THE STORMTECH SYSTEM. MINIMUM STANDARDS (MS) All applicable Virginia Erosion and Sediment Control Regulations and Minimum Standards shall be adhered to during all phases of construction. These include, but are not limited to the following: 1. STABLIZATION OF DENUDED AREAS: Permanent or temporary soil stabilization shall be applied to bare 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 or undisturbed for longer than 14 days. Permanent stabilization shall be applied at areas that are to be left dormant for more than 1 year. 2. STABILIZATION OF SOIL STOCKPILES: During construction of the project, soil stockpiles shall be stabilized or protected with sediment trapping measures. The applicant is responsible for temporary protection and permanent stabilization of all soil stockpiles on site as well as soil intentionally transported from the project site. 3.PERMANENT VEGETATIVE COVER 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 achieve that, in the opinion of the county Inspector, is uniform and mature enough to survive to inhibit erosion. 4. TIMING & STABILIZATION OF SILT TRAPPING MEASURES: 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. 5. STABILIZATION OF EARTHEN STRUCTURES: Stabilization measures shall be applied to earthen structures such as dams, dikes and diversions immediately after installation. 6.SEDIMENT TRAPS AND BASINS: A sediment basin shall control surface runoff from disturbed areas that is comprised of flow from drainage areas greater than or equal to three acres. The sediment basin shall be designed and constructed to accommodate the anticipated sediment loading for the land disturbing activity. The outfall device or system device shall take into account the total drainage area flowing through the disturbed area to be served by the basin. 7.CUT AND FILL SLOPES: 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. & CONCENTRATED RUN-OFF DOWN CUT OR FILL SLOPES: Concentrated runoff shall not flow down cut or fill slopes unless contained within an adequate temporary or permanent channel, flume, or slope drain structure. 9.WATER SEEPS FROM A SLOPE FACE: Whenever water seeps from a slope face, adequate drainage or other protection shall be provided. 10. STORM SEWER INLET PROTECTION: 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. 11. STABILIZATION OF OUTLETS: Before newly constructed stormwater conveyance channels 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. 12. WORK IN LIVE WATERCOURSES: 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. 13. CROSSING A LIVE WATERCOURSE: When a live watercourse must be crossed by construction vehicles more than twice in any six month period, a temporary stream crossing constructed of nonerodible materials shall be provided. 14. APPLICABLE REGULATIONS: All applicable federal, state and local regulations pertaining to working in or crossing live watercourses shall be met. 15. STABILIZATION OF BED AND BANKS The bed and banks of a watercourse shall be stabilized immediately after work in the watercourse is completed. 16. UNDERGROUND UTILITIES: Underground utilities shall be installed in accordance with the following standards in addition to other 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 for dewatering operations shall be filtered or passed through approved sediment trapping device, or both, and discharged in a manner that does not adversely affect flowing streams or offsite 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. 17. CONSTRUCTION ACCESS ROUTES: Where construction vehicle access routes intersect paved public roads, provisions shall be made to minimize the transport of sediment by vehicular tracking onto paved surfaces. Where sediment is transported on to a public road surface, the road shall be cleaned thoroughly at the end of each day. Sediment shall be removed 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 lots as well as to larger land disturbing activities. 18.TEMPORARY E&S CONTROL MEASURE REMOVAL: All temporary erosion and sediment control measures shall be removed within 30 days after final site stabilization or after 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 sediment. 19.ADEQUACY OF RECEIVING CHANNELS: Properties and waterways downstream from the development site shall be protected from sediment deposition, erosion and damage, due to increases in volume, velocity and peak flow rates of stormwater runoff for the stated frequency storm of 24-hour duration. SHIMP ENGINEERING LAND PLANNING I SITE DESIGN I CIVIL ENGINEERING I PROJECT MANAGEMENT Design Focused Engineering 912 East High S met Phone: 434227-5140 Chanottemile, VA U902 shimp-engineenng.mm VSMP PLAN ALBEMARLE COUNTY, VIRGINIA PROFFIT ROAD TOWNHOMES SOUTH SUBMISSION: 2020.03.20 REVISION: 1) 2020.07.16 2) 2021.03.30 FILE NO. E&SC NARRATIVE 18.041 SHEET C2 OF 12 C2 'Y6 no FO OND 2�.�8 IRON Dense Trees FOUND % % G (I4EL CATE)I 0 % WELD TBIR T.M. 4 4-5A % ROBERT G. PETCHEL & q5eo DI SA KATHLEE 0. PETCHEL % D.B. 296-686 0,1 D.B. 1685 115'&A 12 PLAT -6-rB-10&9 28 & 29 PLAT EX. GRA�El- DRIVEWAY D.B. 9 -443 PLAT % TBR2 L STEIyL 522 x Z NED RI SLEE E --- --- --- --- --- 0 EX. BUILDING TO BE 32 iEln co REMOVED It 0 E BE EX BE 0 ABANDON C NNECTION --7rA---f C H- z AT MAIN /z/0 II 0 8" DI SAN EX. 8�' DI SAN IE\X. 8" DI DI S 0 3 520- z 00 T.M. 32A 0 TREES TBR -.ALBEMARL DEV�LOPME D.B\ 25, D.B. 179 D.B. 439� C) TREES TBR D.B. 5115 - 0 T- M. 32-29D T.M. 32-35 rn �! 11 MAPLE GROVE CHRISTIAN CHURCH 3.20 ACRES ALBEMARLE -tANJ��0 -2DEVELOPM ENT, 1-1-C --s/ D.B. 2303-626, D.B. D.C. 630 THRU 633 PLAT _9 6 D.B. 1406-131 PLAT D.B. ZO51NED 2-516 PLATE R15 D.B. 1011-131 PLAT o D.B. 781-200 D.B. 294-555 PLAT ILL ZONED R1 - - - - - - - - --- --- --- --- --- -- 0 00 0 0 J, -0 QREES TBR 0 J SHIMP ENGINEERING PLANNING' SITE DESIGN, CIVIL ENGINEERING, PROJECT MANAGEMENT Design Focused Engineering 912 East High Street Phone: 434-227-5140 711 Chad.ftewille, VA 22902 shimp-engireenagi.mm Cn Dense Tr'e� 524 'RON FOUND 526 S27*59'12"W 338 89' --------- �,A — — — — — — — — — U T imp > 528- - — — — — — — — Lic. o 45183 NII I I III I II NONEXCLUSI- 530 D EGRES EXCLUSIVE RIGWF 0 SS S2-B- 505-615) / IRO-0530 144.69 EX. GRAVEL DRIVEWA TBR SET S26'08'59"W 169.50' . ........... Dense Trees VSMP PLAN 520 ALBEMARLE COUNTY, VIRGINIA '520 PROFFIT ROAD TOWNHOMES 520 SOUTH ------ VATC-�i LINE 20'SANITARY EASEMENT DB 5301 PG 407 ---- --- SUBMISSION: 2020.03.20 0 o ',20'SANITARY EASEMENT REVISION: 0 0 DB 5301 PG 396 1) 2020.07.16 0 0 2) 2021.03.30 T.M. 32-29 MAPLE GRO E CHRISTIAN CH RCH D.B. 2303-6 6, D.C. 630 THIRD 6�53 PLA f D.B. 1406-131 PLAT D.B. 1011-131 PLAT D.B. 781-200 D.B. 294-555 PLAT ZONED R1 FILE NO. 18.041 II II II II II v EXISTING CONDITIONS SHEET C3 OF 12 CID C' 0* 20 0 20 40 60 Scale: 1"=20' C 3 I \ J A -NEW 30i 526 / A - 526 V A / \ V BOLLARDS IMITS F ISTU Al ` N22°24'08"E 482.68 FOM Dense Trees IRON - FOUND7-7 /. SD �/ F�atOPOSED ROW \ A4D \ \ I �a O 2 G •\ AP 2p \ l?O `\ 2 EMERGENCY ENTRANCE o c1 ■ `3EDICAT ON 35 5�W DTH LOT 31 \ d I \ I I \ I I `s„, I I I I / 1 \ I :: / - \ FIFE 527.5 4. -Aj. (S j� C I I\ 0' AR SETBACK \ x / c �\ ■ II FROM ROAD -CL • - \ \ \ / �' / �,7� �_ NEE SEMENTSA Q �(\}g A :Ews '� \ I \ \ A11 O 1 =\ \ Q Q EX, 8" DI SAN 524 LOT 30 `i " ') \ \ \ \ `\ \ \ I \ / c \ \ DI SA A -TFE-52-7.5- 0 er \ \ I OPEN x / - i S 8 SLEE E SOT 32 LOT 33 LOT 34 LOT 35 LOT 36 LOT 37 LOT 38 \ \ / - c - - •� \ FFE\531.0 FIFE 531.5 FIFE 533.0 Fh 534.0 FIFE 534.5 FIFE 535.0 FIFE OT 39 LOT 40 SPACE E 534.5 534.0 FIFE 533.5 I 2 L STEF r \ \ i 2 \ \ \ X rn LOT 29 \ - m I \ 1 \ \ \ 3 / "NO PARKING' / o I ` 0 N \ I I \ \ v FFE 527.0 <� S 1 � / i - - - 2 \ ws ws \ J o 532 I w - \ \ w \ 30 a TO EXIST G- <" .. \ WATERLI E 1 -,- \ r �� LOT 28 FIFE 527.0 v _ 1 \ \ / D S2 S 1 - \ 2 rmPARKING' / Wi \ 1 I 1 \ i �_ z-'� I I _L_ _ q O °EW 30' -ACSA 4MT LOT 27 I - C 0- a- - - - - - �0 �o �' s E -� 1 \ FFE 527.0 O 0 ARKING" 5 8 WM / _ \ FF 'J \(TYP. V `",� i "NIN PARKING" v A9 \ I ■ , \ G-1 1\ 8 3 y,WNr�,y�T66fR191W TH Wcn W W a W \ "W y�/ W W v� " ■ (/ � A B - MANA ENT EWMT \� NEW 20 PRIEA�T�T ■ vvv 2 qTnpm 8" D SAN \ I a \ 6 E 8 D �p , D `� \ A. - LOT I \ - 33i ~x26" _\ .. n s� `< x8" TEE \ \ \ AS PRIVATE Rl,.:?,.Q 2' DI /\5 �T. (YP.) F�E g355 i 5 O- _3' HDPE STORM 5 5 36" HP STO S \ 4" )F 2 W / �'FJEW DISTURBA E '- A3 12' -3 W Gy NEWa A 3..\ VERLA FE \\ 1 \ 1 G \ _ - - "'�kN _ �31� �Z A` \ P12 HDP PIPE FH Ir I' I N LO A a o ro N LOT 22 1 S \ FFE 5 5.5 0 \\ I \ \ \\ ALKg(TA7 m"E 526.5 y MAF C0 0 .a FT 9 o :E LOT 16 531.5 \5 I \ coJ I I 1 N \max p FIFE 528.0 - a L6 �zv 3 I \ >G LOT w -� LOT 23 \ \ a x \ x S I FFE 535.!8 c FIFE 526.5 LOT 10 _ - - g I I \ \ - N I LOT 17 x I \ FFE 532-0 o / FIFE 528.0 N LOT 4 3 y \ \ " M o o \ ao ((7T8yyppW11M 535.0 ?� \ oti� _ LOT 24 I - (T o \ u 1 x \ EW 0' PRIVAT \ FFE \ ■Oi \ \ / FIFE 527.0 - - 1 o �1 S ORM ESM 'I I' o ■ o \ ------ 22 \ 11 5 LOT 18 .e m '/�^4R X SPE ITION QR FFE 5�'0 /, J 1 a FIFE 528.0 - -o D x 99.8�,a»I g ■ J I \ o z x ■ cn � LOT 25 PAR / FIFE 527.0 I m A - S _ I / In �- /� LOT 12 - �.. Co LOT 19 m I FFE 532.5 _ ws N / \ ■ / - - I z FIFE 528.5 e .. - s �r cn I oa I ws - LOT 5 \ I ■ )- FFE535.0 \ I I SHIMP ENGINEERING N / LOT 26 a - Z �' Z S LAND PLANNING I SITE DESIGN I CIVIL ENGINEERING I PROJECT MANAGEMENT / FIFE 527.0 - I p "i- ¢7 1 '' Z N I `1 1 ■ \ Design Focused Engineering LAT v LOT 13 � , S pl__ ' LOT 20 / c�" FFE 532.5 / I - N o I ■ o_ I \ 912East High Strest Phone:434227-5140 T 6 I o z I I Chadott VA U902 skimp-engineerii-ii / - 5 FFE 5-28F.r NE VARIABLE WIDTH STORMWATER S �01FFE 5 -' m LO 534.5 v c v ilk. 1_ _ v c7 ut m I 522 I I'a. I ANAGEMENT ESMT =� / I1 x _- I D \ 00 LOT 14 / '� _`c L ■ -+ _ S S LOT 21 _ tv FFE 53�-G r VIS <. c I ■ m 1 Dense �TI~ee - - 1 - L �w � 7 I o� _ 52A F I \ I o, 4 " CA - FE 528.5 I S j y q ------ 95 --- X26 I _ / 5 5 4" LAT. (TV') / FFE 534.5 c I In C rn 526 - S27°9'1 _----- -�°- --�/ I (N,_ I - ■ m 11 '� - - - - - - - LOT 15 4" LAT. ( ) I I� *_ \■ 1 U T , . GIMP a - 528 LIMITS D�� 533.0 '� S \ S S .- --- LOT 8 Lic- 5f123 <v4° ------ --- ANC --_ - FE 34.0 I o ■ _ 3 SI07YAL I / ks F c ■ II I E� / 5' 528 0 , / - 530 15' NONEXCLUSIVE RIGHT 0 /SS . 505-61 AND �5) - - - - -g 11 530 Ro SET S26°08'S9"W 169.50' ■ 1 5n- - 1 VSMP PLAN `520� \ o IRO FOUN � I `\I ALBEMARLE COUNTY, VIRGINIA 532 ---\ ' \ PROFFIT ROAD _ - - ♦ A2 \ (,1 �� TOWNHOMES --� ♦ /� 5,6 \\ ■ ■ ■ MATSOUTH CH LI , �I � 1 �\ /I �� / \\\ 1 �♦ II ♦ e e \ \ ■■�NEW 20 STORMWgr�R � 24• HDPE STORM ■■r_ �/ � SUBMISSI ON: MANAGEMME T 2020.03.20 \ \ ��REVISION: \ 0 0 G 1)2020.07.16 OK LIMTS � 2) 2021.03.30OFDUBA 0I II/gip \ ♦ LIMITS OF \ N\ \ I ♦ \ T32-29D DISTURBANCE I \ \ 1 `V M LE GROVE CHRISTIAN I / ♦ , ,I / II \\ �i CHURCH AREA = 3.34 /�� ♦ \ I I / \ AC \ I ♦ \ 1 \ I 1 \ \ \ \ \ I FILE NO. I 1 I 1 \V) / J ( \ \ V \ 18.041 1 1 1\ \ \ \ LASS A Rl�-RA i i i \ GRADING & UTILITY PLAN SHEET C4 OF 12 20 0 20 40 60 , Scale: 1 "=20' C SEQUENCE OF CONSTRUCTION - PHASE 1 1I 1. INSTALL CONSTRUCTION ENTRANCE. b 2. INSTALL SEDIMENT TRAP WITH SILT FENCE AND DIVERSIONS. s3p -- 3. PLACE FILL AROUND SEDIMENT TRAP TO COMPLETE TRAP CONSTRUCTION l / — 534 - — — — —\ BEFORE ANY MAJOR GRADING OCCURS ON SITE. \ ` — 532--- \ Dense Trees \ 4. CONTACT COUNTY INSPECTOR FOR APPROVAL OF FIELD CONDITIONS. s36 \ I 5. BEGIN MASS GRADING. � ❑\ �— \ I\ - — \ \ 6. MAINTAIN PERIMETER CONTROLS. \ 530 / 536 ----- — / I= TEL . \ 530 PED O V I \ _ i -0- O POLE N — — CHU — CHU —F- CHU — CHU — OHU — CHU — OHU — CHU — CHU — OHU — HU — OHU — OHU — OHU OHU — OHU OH H �1y{U _ _ S2& -- — �_ \ — -- —L --—� -- -- -- / / I POLE \ EW 3) 0' \ \ �cp\q7 \ / / I \c \1 I 532 — SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL NO. TITLE KEY _ 526— . F— LIMITS OF DISTU A \ G� 63.02 \ \ \ 3.02 CONSTRUCTION ENTRANCE CE \ / X X 3.05 SILT FENCE SF \ `\ TS PS MN \ %\ — , PS MU \\� \\ G a \ //' ��� 3.09 3.07 INLET TEMPPROTECTIONRARY ION DIKE DOD % I - ( L zA \)I [DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP ST \� I I M / NEW 20' ACSA \ \ N WELQ TBR \ I O EASEMENT @Mk 3.18 OUTLET PRotEcnoN oP pr_� 3.31 TEMPORARY SEEDING TS 0/1(1 DI SA / / _ �3.32 PERMANENT SEEDING 15 \ % \ / � 3.35 MULCH ox/G 3.39 DUST CONTROL I//� C / \ 9YG � AR Y I�-� / / DIVERSION FENCE DF I — �\ 2 L STEF,�L v ( SLEE E I /INLIMITS OF DISTURBANCE _ \ / s32 w \ \ EX. BUILDING TO BE / I REMOVED / cn WM EX.o\ 1 \\ BE REMOVED ABADON c \ \ \\ EW 30' CSA ESMT OS'� F�� \\ C AT MAIN \ I \ \ 1 \ _DT mom a° s N E 8 DI S \ EX. S' DI SAN 1 \ I I I \\ \ \ \ 0 I \ 530 \ \`\ �zMILL &\OVERLA�P�R �No \ II o \ I CJ I --� �� \` \ \ ��m \ I \ SHIMP ENGINEERING / i © I SEDIMENT TRAP DRAINAGE AREA 2.97 ACRES \ C A \ I \ \ BOTTOM 60'x28' \ \ \ AND PLANNING SITE DESIGN CIVIL ENGINEERING PROJECT MANAGEMENT —� >C ELEV' 519. 0. _ \ \�\\ I \ Design Focused Engineering c 912 East High $trees Phoa engir43�9-S140 Chetlo su ¢lk22 , VA shimp-¢ngin¢enng.cOm 01 00 — \ sus - I \ ■ U T IMP a w/ \ v ' i I SIONAL / —/r / I I VSMP PLAN ILo 2 PIRIORTOMAJOR SLL THIS AREA TO FTEIWORKSH SEDIMENTTRAP / // / I A II ALBEMARLE COUNTY, VIRGINIA PROFFIT ROAD D ------ � � I I m l _ , I I o m, I TOWNHOMES ense,T�ee — I m I SOUTH 52A - 3 _ _ cn ■ I /— — — — — — — — — — — — — — — 528LIMITS -OF DISTUl,,BANCE--_ _ \ \ I .... ---- SUBMISSI ON: �s' 2020.03.20 0 � „-�cL„slvLR'GHREVISION: AND EGRES�pB 5�ss o \ 1)2020.07.16 / EX. GRAVEL DRIVEWA TBR \ ■ I 2) 202 03. Dense Trees 16 530 \ — s3o — \ / 3 —r—.532 --� Q ( \ FILE NO. 18.041 c `\okG \\ E&SC PLAN PH 1 r \ I �q \ \ I SHEET C5 OF 12 OOW 20 0 20 O 60 C 5 Scale: 1 "=20' _.. - u- Oyu \_ ; I SEQUENCE OF CONSTRUCTION - PHASE 2 POLE F-N \ \ EW 30' 1. INSTALL ADDITIONAL SEWER MAINS AND WATERLINE. \ - szs, \ \ \ \ / \ \ \ N \o B / 2. INSTALL STORM PIPING AND INLETS, BUT KEEP ALL INLETS LIMITS IF ISTU ACE N22°24'08"E 482.68' w o \ JN � 2 .58 1 EXCEPT A10 BLOCKED OFF UNTIL ROAD IS STABILIZED. INSTALL se Trees EouroiN - 4 / INLET PROTECTION AROUND A10. wA 3. CONNECT PIPES A6 AND A7 WITH A MATTED CHANNEL WHERE � 27A4D G CAP \ \ 2 \\ \\ 3° \ \ / ■ FUTURE DETENTION PIPES WILL BE INSTALLED. PLACE SILT FENCE LOT 31 \ I \ \ TS p,S sue, I / I \ I ■ AROUND CHANNEL. FEE 527.5A�• (S I\ Q 1 _ 4. STABILIZE ROAD WITH 1.5 INCH STONE AND PLACE INLET \ \ \ / N \ PROTECTION ON REMAINING INLETS. n \ / 5. ONCE ROAD IS STABILIZED, REMOVE SEDIMENT TRAP & 5(\8 I \ \ �\ \ DIVERSION AND FINISH CONSTRUCTION ON LOTS 22-26. $2, LOT 30 •I \ / S ?8 SOT 32 LOT 33 LOT 34 \LOT 35 LOT 36 \ LOT 37 LOT 38 /OT 39 LOT 40 \ _ TS SOIL EROSION & SEDIMENT CONTROL SYMBOLS r` A4 \ \ I FFE\531.0 FEE 531.5 FEE 533.0 FFE 534.0 FEE 534.5 FEE 535.0 FEE 534.5 F E 534.0 FEE 533.5 MU 2 L STE (0 X yC \ I \ 32 \ r SYMBOL N0. TITLE KEY _ o I SLEE E \ rn LOT 29 I I \ \ \ / _ - /_ _ 3.02 CONSTRUCTION ENTRANCE CE \ 7 FEE 527.0 \ .e S I \ � / / - - 2 \ \ ZZ / / = 1 X X 3.05 SILT FENCE SF \ � N5 Y5 - \ \ \ \ J o ` $32 I W� - ® 3.07 INLET PROTECTION IP � \ 30 / \ /0 3.09 TEMPORARY DIVERSION DIKE DD LOT 28 I \ 0; I \ \ \ / / / (n < - )F 1 3.12 TEMPORARY DIVERSION \ p FEE 527.0 � I � / � y S I \ \ 28 \ m / I 1 \ [DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP ST \ n ��0 \\ \ \ Oak 3.18 OUTLET PROTECTION OP °' : r' `EW :30' ACSA T 'r ^C„ \ / o . q I \ �- 3.31 TEMPORARY SEEDING O LOT 27 wo I - - - - - - ~ - - J - - ~ - `( /� ° q i \ \\3.32 PERMANENT SEEDING �S M A T LINE \ \ FFE 527.0 1 \ 5+ v 2 - / A9 _ \ I �_ 3.35 MULCH \ \ NF W V }}��,, ABLE `� TH \ \ v `� / 1 \ I I I �-�-� 3.39 DUST CONTROL f W r� �STORiftp� �nW W �,a W VJ yJ -"PP- W W W-u✓ o A B \ - - - NEW 20RIEATTI \ , c I I \ ■ ■ ■, MANA EMENT ESMT LIMITS OF DISTURBANCE _ ■ ■ SW O O 2 8" DI SAN \ _4 O \ B E 8 DI 28 DI SA O ' I 1 \ - 3.17 STORMWATER CONVEYANCE CHANNEL SC 3 x26� \ \ o r, x8" TEE \ \ PRIVATE RO.5,3C. A j �. 1L0T 1 5 13 5e, \ \ A5 IAT. (TYP.) F E 535. "a \ o\ \ g E ■ o o I GV NEW \ \ I - A OVERLA P EZ = m \ll \ \ \ N \ .q o ( "' q A7 '�j b� s 5 \ FFE 5 5.5 \ I c I I ■ I a - \ ' d A 4" FAT. (TIP.) \\ LOT 9 5 _ I I o I LOT 16 \ a' } 53L5 \\ ■ I SOTTO x28, A D: i MB6R FFE I I M 60• a \ \ FEE 528.0 \ } X / CO TAIN 3 s ■ \ k I ELEV 519.0' SCC s y 5' I FFE 535.1e� \ 4 SEAT n - "� - - g A mSWING INSTALL SCC \ LOT t0 ,1,5 0 \I ■ \ / LOT 171,a 30'x33'x MATTING PER \ EVE 532.0 ® Q I / FEE 528.0 \\ DETAIL 11�C8 g \ 8 WM 5 S -5 h FEET535.0 \ 1 \\ \ N (7Tyypp� o A I EIR \ NEW 0' PRIV�TE \ q A ■ 51 \ LOT 18 '.y A FEE 528.0 _ LOT 19 / - - - ----- _ _ FEE 528.5 f L7 11 S ORM ESMT C.\ 96 0 <m \ ■ cL \ a - FFE 53�'0 I \ 9 / � o I ■ v, `. LOTI� F I I \\ 1 FFE 5325 wS / \ ? SHIMP ENGINEERING ws I LOT 5 LAND PLANNING I SITE DESIGN I CIVIL ENGINEERING I PROJECT MANAGEMENT �5) FFE 535.0 I \ I I _ \ \ Design Focused Engineering a ' C \ I 912 East High Stmet Phone: 434M7-5140 5 / I Chanottaealle, VA 22902 skimp-engineenng.wm LOT I - 20 / y e< FIFE 532.5 / / I I II ■ I \ / ... o 5 8" 4m F(� 5-28-D,- / " LOT 6I ? I v 1 5 FFE 534.5 S -+ LOT 14 / S r L -1 ■ II I \ _ _ _ m p C Dense T ~e e �i -szs - 5 I LOT 21 FEE 53� 0 S I ■ ` I 'p 524 IRON ,� 4 " CAq - - FFE 528.5 'd 1 �c 5 5 TYPO 7 v I I FOUND i 64" LAT. ( / EVE 534.5 I , rn I U T MP / I I ( I ■ m I Lic. 0 45183 S2T59'12"W 338.89' - - - - - a - - - LOT 15 q" LAT. (TY ■ �S _ I 3112��Vw� _ - - - - - - - - - - - - - - 528 LIWTOFBI 533.0 ' 5 5 5 LOT 8 I I 9C / ��BANCE -- - - - - - - _ - U ■ ■ FFE 34.0 0 ■ I I `sIOIVAL � - - 530 s■■iU■■ -- J/ O 3 n c ■ 1 - - - - - 144 69 0 c \ I 530 _ _ s O s26°08'59"W 769.50' i I VSMP PLAN Der - G-- - - 530E T - - - IRO C \ ALBEMARLE COUNTY, VIRGINIA PROFFIT ROAD - - A2 SOUTH . » TS PS ■ }/ 516 alll■ ■■ ■■ SUBMISSION: ■ ■ 2020.03.20 ■ ■ REVISION: NEW 20' STOR \ e e e ■ ■ ■ _ ■ ■ MANAGEMENT ES TER MT 1) 2020.07.16 0 \\ �I 0 0 � 1\ _■■'■■�■■Mom■■ 2) 2021.03.30 oft m� / \ �� ITS■O TURBA W \ _ \ ♦/1 M I I/ ♦� Ps� I I I I LIMITS OF S I I \ d TMP 32-29D DISTURBANCE '}/\ I TS I II r\ (A LE GROVE URCHHRISTIAN AREA = 3.34 ' FILE NO. AC -x 18.041 E&SC PLAN PH 2 I SHEET C6 OF 12 20 0 20 40 60 1 C6 N I \, 11 \ _ -1 Scale: 1 "=20' o \ I rn �I I / 532 O I l \ 534 ----- 1\ , Dense Trees \ \ \ 530 \ \ SEQUENCE OF CONSTRUCTION - PHASE 3 1. INLET PROTECTION TO REMAIN UNTIL ALL WORK ONSITE IS COMPLETE. 2. APPLY PERMANENT SEEDING. 3. WHEN SITE IS STABILIZED, INSTALL STORMTECH CHAMBERS WITH THE GUIDANCE OF AN ADS REPRESENTATIVE. 4. CALL FOR FINAL INSPECTIONS. \ I r \ 536 _ - _ � - - � . 530 TEL. \ \ I PED oV \ O --OHU-OHU-/-OHU-OHU-OHU-OHU-pHU-pHU-pHU-OHU- HU- �OHU-OHU-OHU�OHU-OHU OH HU- POLE 526 EW 30' \ \ \ \\ /� / / I\ \ I� � 532 526 \ \ \_ON O LIMITS F ISTU A C \ \ N22'24'08"E 482.68' w \ FO ND 2 .58 1 / - 4 � 27°° ;�'_ -x�Fya<OPOSED ROW A4D \ PZ 0Cqp 2S F �- �`'DEDICATION 35f5,WIDTH ILOT 31 \ I \ s / - \ \ ■ I FROM ROAD -CL FFE 527.5 \ 4" -AT' ( I\ \ \ S U �NEW 20' SEMENT A MU VA I V A All - o\ \ q Q LOT 30 (T .)\ \ \ \ \ \ I TS\ / c \ \ DI SA / S ` 28 SOT 32 LOT 33 LOT 34 LOT 35 LOT 36 LOT 37 LOT 38OT 39 LOT 40 A4 \ I FFE\531.0 FFE 531.5 FFE 533.0 Fh 534.0 FFE 534.5 \ 32 FFE 535.0 FFE 534.5 � E 534.0 FFE 533.5 I _ _ _ _ U 2 L STEG r / a I \ 1 rn LOT 29 SLEE E _ w FFE 527.0 \ .a I \ \ \ i r - - 2 \ \ \ \ w ill 30 / \ 2 °'- - N 1 \ T I- �,p LOT 28 ' I m N 0o FFE 527.0 I \ \ 2 \ / / � � a \ / m - v s l 2� I A\ \ A n a ° ° EW :30'' ACSA LOT 27 0 I \ FFE 527.0 0 I `2 - C 0- - 5 8 e - - - y - -� - y" ° c 1 \ y it A9 \ n I N W V �R•JABLE '�p TH Fp < 1 \ I I I - W r�xST6RMV+`N4 N( W W �g W W W W �� W? �� o A B \_ 4A \ \^ MANA EMENT ES - NE 20' PRIE ANTE \ 2 8" DI SAN \ O 26� \ 20 \ \ PRIVATE R_ O �\ LOT 1 = N \ x _ n s `E x8" TEE \ \ A5 3� I A 2 DI o / 5 LAT. (TYP.) F�E 535.5 S c 24' HDPE STORM 5 5 36° HP STO DI-3 _ _ - �5 4' i'11 \ U, A3 12' DI-3 W GV NEW,Q .d 0 3 \ /� _ -A - 34 OVERLA PER -2 \ A -I o\� " HDP PIPE I_ 1 \I 31 5 �\ P�2 On I \\ a?_ W " 6Y w - 2 LO o I D o N LOT 22 \ ... \\ s. p. ° A7. °. - c --- - �\ FFE 53\5\.5 \ I I \ I FFE 526.5 - n \ I of \ \ \ I o- S m 4" [AT. (TIP.) V ° O O' LOT 9 _ s o \ LOT 16 \ FFE 531.5 y \ c I� FFE 528.0 T- 5 --- LOT 3 �, 1 LOT 23 x x o S y1 ' FFE 535."� �\ o_ I \ FFE 526.5 ,. . S I a \ I - \ LOT 10 - s �pvr N I LOT 17�. x x I \ FFE 5320 wsN I / FFE 528.0 \ \ LOT 4/ M m s / \ po - ((7T8yypp,W,M 5 S ' I FFE 535.0 \ ?J \ LOT 24 (T"P' N \ �' - \ NEW 0' PRIV�TE \ \ ■ C, \ \ ° x \ S ORM ESMT �� \ 9B \ ■ 0 \ \ \ FFE 527.0 522 - - - g a .< ^ I LOT�11 5 N i \ 1 o / LOT 18 y '�L-�X O SPECTION PR .o FFE 532.0 A G I FFE 528.0 ��I 1 D r 9 I I ■ LOT 25 a FFE 527.0 I LOT 12 \ ,-5 --�_ LOT 19 / FFE 532.5 ws N e \ ■ FFE 528.5 � ;ws ' 5 _ v �) - FFEj535.0 \ I \ ■ I (n /' S24 � � 61 ''kz� I N / LOT 26 J FFE 527.0 J I LOT 13 / 5 v / ' ` c \ I \\ ■ I \ I 4" LAT ( I I \ _LOT 20 - 4 eq FFE 532.5 / I o I ---- --- ---- ■ A4H i F� 5-28sr / - NE VARIABLE WIDTH - SSTORM-^ LOT 6 P I 5 8" l%M / I ni ANAGEMENTW SMT ° / 5 �5 ' FFE 534.5 / I v II \- LOT 14/ t-S r L "1 ■ �, 1 '\ - - - - S LOT 21 e �, FFE ws Dense /T,-e \ - S t_ - _ I - L 53�.0 � �� 7 I ■ m I I ni _ 52A FOUND _ I as CAR - FE 528.5 - - - �s - __- S x26 I - 5 4" LAi. (T�') / FFE 534.5 1 , m II 526 - S27'59'12"W 338.89' v TS LOT 15 4" LAT. (TY I ■ I m IDS FFE 533.0 �S \ - - - - 528 LIMIT&- OF7 01 LOTS 9c �� 34.0 I 1 I I ■ / - 528 _ _ O 5G n F c ■ 530 _ -- 2 144 69 0 \ _ ■ 530 � �� � S � �526�08'S9"W 1� - 530 � \ ■ 11 / ❑ IRO c \ / Dense Trees 0 FOUND r / / e SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL NO. TITLE KEY 3.02 CONSTRUCTION ENTRANCE CE x x 3.05 SILT FENCE SF ® 3.07 INLET PROTECTION IP 3.09 TEMPORARY DIVERSION DIKE DD [DRAWN TO SCALE] 3.13 TEMPORARY SEDIMENT TRAP ST 3.18 OUTLET PROTECTION OP 3.31 TEMPORARY SEEDING O 3.32 PERMANENT SEEDING �S 3.35 MULCH 3.39 DUST CONTROL DC MENOMINEE! IN IN MENOMINEE! LIMITS OF DISTURBANCE SHIMP ENGINEERING LAND PLANNING I SITE DESIGN I CIVIL ENGINEERING I PROJECT MANAGEMENT Design Focused Engineering 912 East High Sheet Phone: 434-227-5140 ChanoOesmile, VA 22902 shimp-eagineenng.mm U Stir 5183 VSMP PLAN ALBEMARLE COUNTY, VIRGINIA PROFFIT ROAD TOWNHOMES SOUTH SUBMISSION: 2020.03.20 REVISION: 1) 2020.07.16 2) 2021.03.30 g25 C/ - - - - - - 532\ ^ I - F- 532 - - \ Q ( c\ FILE NO. \ \ l 0 1 I Ik \ 18.041 G i� q 01\ ���G \\ E&SC PLAN PH 3 i 0 0 Q I I \ SHEET C7 OF 12 zo o zo ao ' so Scale: 1 "=20' lam/• STONE 70' MIN. CONSTRUCTION ACCESS 3" SM-2A ASPHALT TOP COURSE 2% 2% STONE CONSTRUCTION ACCESS 2% MIN. 21A AGGREGATE BASE PROFILE 70' MIN - ASPHALT PAVED / WASHRACK 2% 27 12' MIN.* r_ � *MUST EXTEND FULL WIDTH L,O -POSITIVE DRAINAGE TO SEDIMENT OF INGRESS AND EGRESS OPERATION TRAPPING DEVICE PLAN 2' MIN. 29 PAVEMENT -- PAVEMENT-` JOSH VE DRAINAGE TO SEDIMENT IRAPPING DEVICE FILTER CLOTI-IJ SECTION A -A A inin11utun water tap of 1 hlch nulst be installed with a ininhi l 1 inch ballcock shutoff valve suppl}in.2 a wash hose with a diameter of 1.5 inches for adequate constant pressure. Wash water must be carried away front the enhance to an approved settling area to remove sedunent. All sedunent shall be prevented fio1II entering Storr1l drains, ditches, or watercourses. PAVED WASH RACK 'NC (SCA-L 1 YAVEQ C$ Not To Scale TABLE 3.31-C TEMPORARY SEEDING PLANT MATERIALS, SEEDING RATES, AND DATES SEEDING RATE NORTH' SOTITH6 PLANT 3/1 511 8/IS 2/15 5/I 9/1 SPECIES CHARACTERISTICS A,[ IOW Br to I. to to :IA to to to 4/30 4130 9/1 11/IS OATS 3 bu. (up to IOU Ibs., 2 Me. X - - X - - Use spring varieties (e.g., Noble). A( v- satiwl not 1. than 5016s.) RYE" 2 11 (up to 110 lbs., 2.5 lb.. X - X X - X U. for bde fall seed P' wink' saAe careleT na less 1115016s.) cover. Tolmhn cold and low moil ore. GERMAN MILLET 5016s. eppmx. 1 lb. - X - - X - W..season um.A. Dies et first (SMaria iWiu1 frost May be Wdd to summer mue. ANNUAL RYEGRASS` W tbs. 11h lbs. X - X X - X May be added in mixes. Will (�i yL tm multi-Flomml mow wl of mart'Wads. WEEPING 15 Ibs. 5'h ass. - X - - X - Warm-uason pe ..W. May LOVEGRASS hooch. Tolerates hot, dry slopes m roNis g-- and acid, infertile soils. Mey be added to mixes. KOMAN 2516s. appmx. Ph X X - X X - We'm season ermual legume. LESPEDEZA` lbs. Tolerates acid soils. May be (tesoodev M --lace added to mixes. ' Northern Piedmont and Mountain region. See Plates 3.22-1 and 3.22-2. b Southern Piedmont and Coastal Plain. e May be used as a cover crop with spring seeding. it May be used as a cover crop with fall seeding. X May be planted between these dates. - May a01 be planted between these dates. 2 TEMPO] C8 Not To Scale 1992 Y SEEDING (TS a N L. 3.35 TABLE 3.35-A ORGANIC MULCH MATERIALS AND APPLICATION RATES RAM:MUI CHES. NOTES: Per Acre Per 1000 sq. ft. Straw or Hay 1§ - 2 tons 70 - 90 lbs. Free from weeds and coarse (Minimum 2 matter. Must be anchored. tons for Spread with mulch blower winter cover) or by hand. Fiber Mulch Minimum 35 lbs. Do not use as mulch for 1500 lbs. winter cover or during hot, dry periods.* Apply as slurry. Corn Stalks 4 - 6 tons 185 - 275 lbs. Cut or shredded in 4-6" lengths. Air-dried. Do not use in fine turf areas. Apply with mulch blower or by hand. Wood Chips 4 - 6 tons 185 - 275 lbs. Free of coarse matter. Air- dried. Treat with 12 Ibis nitrogen per ton. Do not use in fine turf areas. Apply with mulch blower, chip handler, or by hand. Bark Chips 50 - 70 cLr. 1-2 cu. yds. Free of coarse matter. Air - or yds. dried. Do not use in fine Shredded turf areas. Apply with Bark mulch blower, chip handler, or by hand. ' When fiber mulch is the only available mulch during periods when straw should be used, apply at a minimum rate of 2000 lbs./ac. or 45 lbs./1000 sq. ft. Source: Va. DSWC MULCHING 1.5 i EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. 4) SILT FENCE C$ Not To Scale W. WIRE SUPPORT SIL T FENCE DROP INLET PROTECTION 2 X 4' WOOD FRAME DROP INLET 1ME ~7 GATHER �1 EXCESS AT CDR PERSPECTIVE VIEWS ELEVATION OF STAKE AND FABRIC ORIENTATION SPECIFIC APPLICATION I l' MIN. IIIII DETAIL A 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. 5 INLET PROTECTION IP C8 Not To Scale GRAVEL CURB INLET SEDIMENT FIL TER i. 4 \ ♦ 1 �,\ �, i �• GRAVEL FILTER * 12" RUNOFF WATER WIRE MESH FILTERED WATER } o:. .... G.. F SEDIMENT a_. CONCRETE GUTTER 12' CURB INLET 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. * GRAVEL SHALL BE VDOT #3, #357 OR 5 COARSE AGGREGATE. 6 INLET PROTECTION IP C$ Not To Scale 10% SETTLEMENT �. 0.3' FREE BOARD DESIGN MW DEPTH W-11110IIIII MIN ON-6 -m- 7 VEE-SHAPED DIVERSION DV) C$ Not To Scale Compacted Soil 18" min. Flow III 4.5' min. $ DIVERSION DIKE DD oScale PERMANENT SEEDING SPECIFICATIONS February 16 through April 30: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Annual Rye - 20 Ibs/acre. May 1 through August 15: Kentucky 31 Fescue - 128 lbs/acre; Red Top Gross - 2 lbs/acre; Foxtail Millet - 20 lbs/acre. August 16 through October 31: Kentucky 31 Fescue - 128 lbs/acre; Red Top Gross - 2 lbs/acre; Annual Rye - 20 lbs/acre. November 1 through February 15: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Winter Rye - 20 lbs/acre. MULCHING SPECIFICATIONS: Straw or hay at a rate of 2 tons/acre. Must be anchored. Spread with mulch blower or by hand. LIME AND FERTILIZER SPECIFICATIONS: Lime and fertilizer needs should be determined by soil tests. Soil tests may be preformed by the Cooperative Extension Service Soil Testing Laboratory at VPI&SU, or by a reputable commercial laboratory. Information concerning the State Soil Testing Laboratory is available from CITY Extension Agents. Under unusual conditions where it is not possible to obtain a soil test, the following soil amendments will be applied: For Permanent Seeding: Seeded areas shall be limed at a rate of 2 tons per acre, and fertilized at a rate of 1,000 lbs. per acre of 10-20-10 (10 lbs. per 1,000 square feet) or equivalent. For Temporary Seeding: Seeded areas shall be limed at a rate of 2 tons per acre, and fertilized at a rate of 600 lbs. per acre of 10-20-10 (10 lbs. per 1,000 square feet) or equivalent. LOW MAINTENANCE GROUND COVER: SOUTHEAST NATIVE GRASS SEED MIX (AMERICAN MEADOWS INC.) For slopes steeper than 3:1 grade, Mix the following seeds at 30 lbs/acre each, along with EC-2 Matting: Virginia Wildrye (Elymus virginicus), Little Bluestem Grass (Schizachyrium scoporium), Purpletop (Tridens flavus), Broomsedge (Andropogon virginicus) and Indian Grass (Sorghastrum nutans). s PERMANENT SEEDING PS C$ Not To Scale TABLE 3.39-A ADHESIVES USED FOR DUST CONTROL Water Application Dilution Type of Rate Adhesive (Adhesive: Water) Nozzle Gallons/Acre Anionic Asphalt Emulsion 7:1 Coarse Spray 1,200 Latex Emulsion 12.5:1 Fine Spray 235 Resin in Water 4:1 Fine Spray 300 Acrylic Emulsion (Non -Traffic) 7:1 Coarse Spray 450 Acrylic Emulsion (Traffic) 3.5:1 Coarse Spray 350 10 DUST CONTROL DC C$ Not To Scale } DISTANCE IS 6' MINIMUM IF FLOW IS TOWARD EMBANKMENT FLOW 12 CULVERT INLET PROTECTION (CIP) C8 / Not To Scale TYPICAL WATERWAY CROSS -SECTIONS TYPICAL RIRRAP CHANNEL WITH NO STONE ONLY THE FILTER CLOTH Sul;; I FILTER CLOTH) NOTE: ALTHOUGH FILTER CLOTH IS PREFERED, A GRANULAR FILTER MAY BE SUBSTITUTED FOR FILTER CLOTH. ( FOR PHYSICAL REQUIREMENTS, SEE STD. & SPEC. 3.19, RIPRAP) NOTE: DETAIL DRAWING ADJUSTED BASED ON THE DESIGN SOURCE: SWGPLATE 3.17-1 STORMWATER CONVEYANCE CHANNEL C8 Not To Scale PIPE OUTLET CONDITIONS A A HRLA WI IN IAU ULNINLU {a - CHANNEL I LG=11F� 0% d 7- SECTION A -A FILTER CLOTH KEY IN 6"-9'; RECOMMENDED FOR ENTIRE PERIMETER NOTES: 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. 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 INCHES. Sediment Trap Design Data Weir DA Wet D1 Wet Vol. Area 1 Dry D2 Dry Vol. Area 2 No. A B C H (A.) Z (ft.) Length (AGs.) I" (sq. ft.) (ft.) (sq. ft.) (Req- (PCoY) (Req. (Pcov) 1 524.0 522.0 519.0 3.0 3.0 17.8 2.97 199.0 3.0 218.0 2244.0 199.0 2.0 199.0 3107.0 Q10 ms) La (ft) Do (ft) 3Do (ft) d50 (in) depth (in) Outlet Condition Al 5.86 11.0 2.00 6.00 6.0 9.0 Channel 14 � OUTLET PROTECTION TABLE (OP C$ Not To Scale ORIGINAL GROUND ELEV. *SEE PLATE 3.13-1 Area 2 DRYSTORAGE 67 CU. YDJACRE WETSTORAGE 67 CU. YDJACRE D1 \FILTER CLOTH \ ORIGINAL (EXCAVATED) GROUND EL=C ELEV. COARSE AGGREGATE** CLASS I RIPRAP CROSS SECTION OF OUTLET CLASS 1 RIPRAP LENGTH (IN FEET) _ \ / , (I X DRAINAGE AREA DIVERSION DIKE I ' COARSE AGGREGATE" EXCAVATED E AREA FILTER CLOTH **COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5 OUTLET (PERSPECTIVE VIEW) 16 TEMPORARY SEDIMENT TRAP (ST) C8 )Not To Scale 3do (MIN.) 'IPE OUTLET TO WELL )EFINED CHANNEL STANDARD SYMBOL DETAIL C-9 DIVERSION FENCE H- OFF DRAINAGE AREA - 2 ACRES �F� MAX.MAXIMUM 10l -yl 34 IN MIN. GROUND SURFACE II MIN. 1 u n U n 36 IN MIN. 2% IN DIAMETER II II GALVANIZED STEEL OR ALUMINUM CHAIN UNK FENCE POSTS COVERED WITH IMPERMEABLE SHEETING ELEVATION UV RESISTANT IMPERMEABLE SHEETING ON BOTH SIDES t)F FENCE 2% IN DIAMETER GALVANIZED STEEL EXTEND IMPERMEABLE SHEETING OR ALUMINUM OR PROVIDE SOIL STABIUZATION MATTING POSTS 4 FT MIN. ALONG FLOW SURFACE FLOW �_ 34 IN MIN. EMBED IMPERMEABLE SHEETING 8 IN MIN. INTO GROUND FOLD SHEETING OVER TOP OF FENCE AND SECURE WITH WIRE TES SECTION CONSTRUCTION CONSTRUCTION 1. SPECIFICA�ONS USE 42 INCH HIGH, 9 GAUGE OR THICKER CHAIN UNK FENCING (2% INCH MAXIMUM OPENING). 2. USE 2% INCH DIAMETER GALVANIZED STEEL POSTS OF 0.095 INCH WALL THICKNESS AND SIX FOOT LENGTH SPACED NO FURTHER THAN 10 FEET APART. THE POSTS DO NOT NEED TO BE SET IN CONCRETE. 3. FASTEN CHAIN UNK FENCE SECURELY TO THE FENCE POSTS WITH WIRE TES 4. SECURE 10 MIL OR THICKER UV RESISTANT, IMPERMEABLE SHEETING TO CHAIN UNK FENCE WITH TIES SPACED EVERY 24 INCHES AT TOP, MID SECTION, AND BELOW GROUND SURFACE. 5. EXTEND SHEETING A MINIMUM OF 4 FEET ALONG FLOW SURFACE AND EMBED END A MINIMUM OF 8 INCHES INTO GROUND. SOIL STABIUZATION MATDNG MAY BE USED IN UEU OF IMPERMEABLE SHEETING ALONG FLOW SURFACE. 6. WHEN TWO SECTIONS OF SHEETING ADJOIN EACH OTHER, OVERLAP BY 6 INCHES AND FOLD WITH SEAM FACING DOWNGRADE. 7. KEEP FLOW SURFACE ALONG DIVERSION FENCE AND POINT OF DISCHARGE FREE OF EROSION. REMOVE ACCUMULATED SEDIMENT AND DEBRIS. MAINTAIN POSITIVE DRAINAGE. REPLACE IMPERMEABLE SHEETING IF TORN. IF UNDERMINING OCCURS, REINSTALL FENCE. MPRYLAND STANDARDS AND SPECIFICATIONS FOR SOIL EROSION AND SEDIMENT CONTROL US. DEPARTMENT OF AGRICULTURE 2011 MMMAND DEPMnMENT OF ENVIRONMENT NATURAL RESOURCES CONSERVATION SERVICE WATER MANAGEMENT ADMINISTRATION 15 Dmm C$ Not To Scale SHIMP ENGINEERING LAND PLANNING I SITE DESIGN I CIVIL ENGINEERING I PROJECT MANAGEMENT Design Focused Engineering 912 East High Street Phone: 434-227-5140 ChadoResvilk, VA U902 shim"rgineenng.com VSMP PLAN ALBEMARLE COUNTY, VIRGINIA PROFFIT ROAD TOWNHOMES SOUTH SUBMISSION: 2020.03.20 REVISION: 1) 2020.07.16 2) 2021.03.30 FILE NO. E&SC DETAILS SHEET C8 OF 12 m A7 A8 540 53511 Ci 530 525 520 515 Lq 510 505 A9 Al0 A11 540 535 530 525 520 m O, G7 N m -+ N ins 75`� N O N N+ ,.�,oM E w 3 0 Min_ GRADE w z GRADE LINE c_ r EW o GRADEHYDRAIJI 30_¢ z w z - 53.04LF - 15" HDPE ®4.71% o N - - - - - - 3.27LF 1F unPF Cw o o2 0.7-37 a 1 0 "11DPE N 0 N - uT - N 10+00 10+50 11+00 2 STORM PROFILE A7-A10 C9 VERT:1"=10' HORZ: I"=20, 54 Z4 54 53 53 52 52 51 51 50 11+50 0 I I I I I M K M K M K M K M K .� .� -� .� .7i 5 a ro + O V of Of No �I No 30_¢ w Z H N 0 000 0O-T zZZ > zzz z 10 0 10+�50 11+00 Note: Contractor Shall Perform Field urvey to Confirm Adequate Slope of Each Pipe Before Proceeding to the Next. 4 SANITARY PROFILE Z4-Z4a C9 iiii HORZ: 1"=20' 100-YR WISE 525.05 10-YR WISE 523.56 2-YR WISE 521.70 V IIe ms/ 1-YR WISE 521.10 o. y' I-3C TOP 525.77 /EIR TOP 523.40 3" ORIFICE INV. 521.40 2.2" ORIFICE INV. 516.72 ROVIDE A TRASH RACK FOR THIS OFIFICE is�WEIR WALL DETAIL STR. A4 C9 )SCALE: 1"=5' 540 535 530 525 520 515 510 505 500 10+00 11+50 GROUND ELEVATION 52E STONE TOP 525 CHAMBER ROW TOP 524 A7 535 530 525 520 2'M 515 1 12+00 540 535 530 525 520 515 510 505 I 1' I•.I I 1 1' 1 ��fa>_�����>_�©®I6f1•�lQS'Ii6'1ib'(I�' o®®0©0oo0��IIIIIIIII®®0®00 ������ II ®��vzrc���i&��tF�tFY�iEJ•� ----------------- ----------------- td��t.Y��' F��S'd1�sT"i'as'F'C��EFa�Tr�Syf.��vxavY��vxsn��sra��rlT��!'aslia�8'� I � ----------------- �_0_�_�_�_�_�_®_�_�_� ' 11 1111111�111111111191•�_�_®' �������®��IIIIII®IIIIIIIIII'F�IIIIIII�IIIIIIIIIIFS ���I '�®' 4 rn 53 53 52 52 51 51 Z4b 0 o N O o Z - 0 o N� D NO x a w H N K "' ROP. GRADE o N o M O O - N 10+50 11+00 O> > z z 3 SANITARY PROFILE Z4-Z4b C9 VERT:1"=10' HORZ: 1 "=20' 0 PORT (TYP.�Z STONE COVER Z 3 a _ 24" HDPE ate.L- -n Vc-450,n Ie n le FIND CAP I N I I I I rrrrrr vv Y r IN ROW WI VARIA13=INGTH 50 10+00 10+50 11+00 s STORMTECH PROFILE C9 VERT:1"I HORZ: 1"=20' ADS GEOSYNTHETIC 601T NON -WOVEN GEOTEXTILE AROUND ALL STONE LAYERS #3 STONE " UNDERDRAIN INV. 517.5' STORMTECH MC-4500 (TYP.) 3' 7 1STORMTECH CHAMBERS SECTION DETAIL 09 SCALE: 1"=5' 535 530 525 520 515 510 11+50 535 530 525 520 515 1 TABLE 1, RECOMMENDED MINIMUM TRENCH WIDTHS HP STORM TRENCH INSTALLATION DETAIL MIN. TRENCH PIPE DIAM. WIDTH 12" Sir 3001 762mm 15" 34" 375mm 864mm 18" 39" 450mm f9glinnill 2A' 49" 600mm 11919mml 30" 56" 144' 36' 38" 6 4" 900mm 1626M 42" 12" 1050mm 1829mm 48" 80 12001 2032mm 80" 98 1500mm 2438mm a. '%•a:: HAUNCH TABLE 2, MINIMUM RECOMMENDED COVER BASED ON VEHICLE LOADING CONDITIONS BEDDING 4" FOR 12'-24" PIPE 8" FOR 30"-W" PIPE MIN TRENCH WIDTH SUITABLE (SEE TABLE) FOUNDATION NOTES: 1. ALL PIPE SYSTEMS SHALL BE INSTALLED IN ACCORDANCE WITH ASTM D2321, "STANDARD PRACTICE FOR UNDERGROUND INSTALLATION OF THERMOPLASTIC PIPE FOR SEWERS AND OTHER GRAVITY FLOW APPLICATIONS', LATEST ADDITION, SURFACE LIVE LOADING CONDITION HEAVY CONSTRUCTION PE DAM, H-25 (75T AXLE LOAD) 2 "-48' 12" 48" 3In-1200mm [VEHOIOPL'IE 305mm 1219mm 60" 24" 60" 1500mm 610mm 1524mm IN EX ESS OF 75T MAY RE UIRE ADDITI NAL COVER WITH THE EXCEPTION THAT THE INITIAL BACKFILL MAY EXTEND TO THE CROWN OF THE PIPE. SOIL CLASSIFICATIONS TABLE 3, MAXIMUM COVER FOR ADS HE STORM PIPE, 8 ARE PER THE LATEST VERSION OF ASTM D2321. CLASS IVB MATERIALS (MH, CH) AS DEFINED IN PREVIOUS VERSIONS OF ASTM D2321 ARE NOT APPROPRIATE BACKFILL MATERIALS. 2. MEASURES SHOULD BE TAKEN TO PREVENT MIGRATION OF NATIVE FINES INTO BACKFILL MATERIAL, WHEN REQUIRED. 3. FOUNDATION: WHERE THE TRENCH BOTTOM IS UNSTABLE, THE CONTRACTOR SHALL EXCAVATE TO A DEPTH REQUIRED BY THE ENGINEER AND REPLACE WITH SUITABLE MATERIAL AS SPECIFIED BY THE ENGINEER. AS AN ALTERNATIVE AND ATTHE DISCRETION OF THE DESIGN ENGINEER, THE TRENCH BOTTOM MAY BE STABILIZED USING A GEOTEXTILE MATERIAL. 4. BEDDING: SUITABLE MATERIAL SHALL BE CLASS I, II, III, OR IV. THE CONTRACTOR SHALL PROVIDE DOCUMENTATION FOR MATERIAL SPECIFICATION TO ENGINEER. COMPACTION SHALL BE SPECIFIED BY THE ENGINEER IN ACCORDANCE WITH TABLE 3 FOR THE APPLICABLE FILL HEIGHTS LISTED. UNLESS OTHERWISE NOTED BY THE ENGINEER, MINIMUM BEDDING THICKNESS SHALL BE 4' (100mm) FOR 12"-24' (300mm-300mm) DIAMETER PIPE; 6" (150mm) FOR 30"-60" (750mm-1500mm) DIAMETER PIPE. THE MIDDLE 113 BENEATH THE PIPE INVERT SHALL BE LOOSELY PLACED. PLEASE NOTE, CLASS IV MATERIAL HAS LIMITED APPLICATION AND CAN BE DIFFICULT TO PLACE AND COMPACT; USE ONLY WITH THE APPROVAL OF A SOIL EXPERT. 5. INITIAL BACKFILL: SUITABLE MATERIAL SHALL BE CLASS I, II, III, OR IV IN THE PIPE ZONE EXTENDING TO THE CROWN OF THE PIPE. THE CONTRACTOR SHALL PROVIDE DOCUMENTATION FOR MATERIAL SPECIFICATION TO ENGINEER. MATERIAL SHALL BE INSTALLED AS REQUIRED IN ASTM D2321, LATEST EDITION. COMPACTION SHALL BE SPECIFIED BY THE ENGINEER IN ACCORDANCE WITH TABLE 3 FOR THE APPLICABLE FILL HEIGHTS LISTED. PLEASE NOTE, CLASS IV MATERIAL HAS LIMITED APPLICATION AND CAN BE DIFFICULT TO PLACE AND COMPACT; USE ONLY WITH THE APPROVAL OF A SOIL EXPERT. 6. MINIMUM COVER: MINIMUM COVER, H, IN NON -TRAFFIC APPLICATIONS (GRASS OR LANDSCAPE AREAS) IS 12" (3001 FROM CLASS I CLASS II CLASS III CLASS IV PIPE DIA COMPACTED 95% 90% 85% 95% 90% 95% 1r 41 28 21 16 20 16 16 (300mm) (12.5m) (8.5m) (6.4m) (4.9m) (6.1m) (4.91 (4.91 15, 42 29 21 16 21 16 16 (3751 (12.8m) (8.8m) (6.4m) (4.9m) (SAID) (4.9m) (4.9m) 18' 44 30 21 16 22 17 16 (450mm) (13.4m) (SAID) (6Am) (4.9m) (6.7m) (5.2m) (4.9m) 24" 37 26 18 14 19 14 14 (6001 (11.3m) (7.9m) (5.5m) (4.3m) (5.8m) (4.3m) (4.3m) 30" 39 27 19 14 18 15 14 (7501 1 (11.91 (8.2m) (5.8m) (4.3m) (5.8m) (4.6m) (4.31) 36" 28 20 14 10 14 11 10 (900MIT (8.51n (8.1In (4.3m) (3.Om) 42" 30 21 14 10 15 11 10 (1050mm) (9.1m) (6.4m) (4.3m) (3.0m) (4.6m) (3.4m) (3.0m) 48" 29 20 14 9 14 10 10 (12001 (8.8m) (61 (4.3m) (2.7m) (4.3m) (3.Om) (3.0m) 60" 29 20 14 B 14 10 9 (1500mm) (81 (61 (4.3m) (2.7m) (4.3m) (3Dm) (2.7m) THE TOP OF PIPE TO GROUND SURFACE. ADDITIONAL COVER MAY BE REQUIRED TO PREVENT FLOTATION. FOR TRAFFIC FILL HEIGHT TABLE GENERATED USING AASHTO SECTION 12, LOAD APPLICATIONS; CLASS I OR II MATERIAL COMPACTED TO 90% SPD AND CLASS III COMPACTED TO 95% BED IS REQUIRED. RESISTANCE FACTOR DESIGN (LRFD) PROCEDURE WITH THE FOLLOWING FOR TRAFFIC APPLICATIONS, MINIMUM COVER, H, IS it (300mm) UP TO 48" (1201 DIAMETER PIPE AND 24" (61301 OF ASSUMPTIONS: COVER FOR 60' (15001 DIAMETER PIPE, MEASURED FROM TOP OF PIPE TO BOTTOM OF FLEXIBLE PAVEMENT NO HYDROSTATIC PRESSURE OR TO TOP OF RIGID PAVEMENT. UNIT WEIGHT OF SOIL (ys) =120 PCF T. FOR ADDITIONAL INFORMATION SEE TECHNICAL NOTE 2.04. 8 REV. MAXIMUM CCWR HEIGHTS RAID 01/11/17 esoteADalrq REV. DESCRIPTION BY MMODrN CHKD ADVANCED DRAINAGE SYSTEMS, INC (•ADS") HAS PREPARED THIS DETAIL BASED ON INFORMATION PROVIDED TO ADS. THIS DRAWING IS INTENDED TO OEPICTTHE COMPONENTS AS REQUESTED. ADS HAS NOT PERFORMED ANY ENGINEERING OR DESIGN SERVICES FORTHIS PROJECT, NOR HAS ADS INDEPENDENTLYVERIFIED THE INFORMATION SUPPLIED. THE INBTALIATION DETAILS PROVIDED HEREIN ARE GENERAL TRENCH INSTAIIATION /B4D TRUEMAN MW RECOMMENDATIONS AND ME NOT SPECIFIC FOR THIS PROJECT. THE DESIGN ENGINEER SHALL REVIEW THESE DETAILS PRIOR TO ARD, OHIO 4D CONSTRUCTION. IT IS THE DESIGN ENGINEERS RESPONSIBILITYD�,� HILLI TO ENSURE THE DETAILS PROVIDED HEREIN MEETS OR EXCEEDS THE (HP STORM) APPLICABLE NATIONAL, STATE, OR LOCAL REQUIREMENTS AND TO ENSURE THAT THE DETAILS PROVIDED HEREIN ARE ACCEPTABLE FOR THIS .wNaa°ow•v.•ser•ra4ANc. PROJECT. DRAWING NUMBER: STD-101D PROFFIT ROAD TOWNHOMES SOUTH LD-204 Stormwater Inlet Computations Inlet; w Cil Only Sag Inleu Only s u a pp a Co Ic� ci n y ❑" ae a a ❑ I 3 5 6 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 (0) L.) (inI (cfs) (cfs) (cfs) (7) (7) (1/') (0) (0) (cfs) (cfs) (0) (0) (0) All DI-7 3.5 0.47 0.47 0.22 4.0 0.88 0.00 0.88 0.020 0.04 0.04 0.09 61 6.5 1.43 1 0.00 1.43 - 0.13 - - 8.11 AS DI-3B 12 0.58 0.82 0.47 4.0 1.89 0.00 1.89 0.020 0.02 0.03 5.05 0.23 100.0% 1.89 0.00 6.5 3.08 0.00 3.08 - 6.81 016 77.0% 2.37 0.71 A5 DI-3B 12 0.73 0.71 0.51 4.0 2.05 0.00 2.05 0.020 0.08 0.02 0.02 0.26 0.5 0.53 6.88 6.5 3.33 0.71 4.04 032 0.5 0.64 9.67 A4 DI-3C 12 1.05 0.72 0.76 4.0 3.04 0.00 3.04 0.026 0.08 0.02 0.02 0.27 0.5 0.53 7.06 6.5 4.94 0.00 4.94 031 0.5 0.61 9.03 A9C DI-3C 6 0.33 0.70 0.23 4.0 0.92 0.00 0.92 0.026 0.08 0.02 0.02 0.12 0.5 0.24 LAS 6.5 1.49 0.00 1.49 1 0.17 1 0.5 0.33 2.00 INSPECTION PORT GROUND El 528.05' NE TOP 525.80' 1.0' 1 ATOR ROW TOP 524.80' ISOLATOR ROW I TOR BOTTOM 519.8' 75' #3 STONE BER BOTTOM 519.5' ST NE BOTTOM 517.50' A4 rm, rm1 M M + U MRL&OFDRAIN _ o_ ¢ ROOFDRAIN EW INV. IN GRADE 3 a ¢ w 0 z N - - 24" BPE 94 39 - - 36" HP FIR 0.267 N �- �- - �_- >z-!­ >_ O > -za o ¢ z = � v 15+00 SC s STORM PROFILE A4-A6 MC9 VERT:1"=10' HORZ: 1"I 16+00 540 535 530 525 520 515 510 505 500 16+50 10+50 11+00 11+50 12+00 12+50 13+00 13+50 14+00 14+50 15+ 9 STORM PROFILE Al-A4 C9 VER : _ Hll 1"=20' SHIMP ENGINEERING LAND PLANNING SITE DESIGN CIVIL ENGINEERING PROJECT MANAGEMENT Design Focused Engineering 912 East High Street Phone: 434-227-5140 Chanotlesvil[ VA22902 shimp-engineenng.mm VSMP PLAN ALBEMARLE COUNTY, VIRGINIA PROFFIT ROAD TOWNHOMES SOUTH SUBMISSION: 2020.03.20 REVISION: 1) 2020.07.16 2) 2021.03.30 FILE NO. PROFILES SHEET C9 OF 12 18.041 C9 A9A A9B ACCEPTABLE FILL MATERIALS: STORMTECH MC-4500 CHAMBER SYSTEMS AASHTO MATERIAL MATERIAL LOCATION DESCRIPTION COMPACTION / DENSITY REQUIREMENT CLASSIFICATIONS FINAL FILL: FILL MATERIAL FOR LAYER'D' STARTS FROM THE PREPARE PER SITE DESIGN ENGINEER'S PLANS. PAVED D TOP OF THE'C' LAYER TO THE BOTTOM OF FLEXIBLE ANY SOIUROCK MATERIALS, NATIVE SOILS, OR PER ENGINEER'S PLANS. N/A INSTALLATIONS MAY HAVE STRINGENT MATERIAL AND PAVEMENT OR UNPAVED FINISHED GRADE ABOVE. NOTE THAT CHECK PLANS FOR PAVEMENT SUBGRADE REQUIREMENTS. PREPARATION REQUIREMENTS. PAVEMENT SUBBASE MAY BE PART OF THE'D' LAYER AASHTO M145' INITIAL FILL: FILL MATERIAL FOR LAYER 'C'STARTS FROM THE GRANULAR WELL -GRADED SOIUAGGREGATE MIXTURES, <35% FINES OR A-1, A-2.4, A-3 BEGIN COMPACTIONS AFTER 24" (600 mm) OF MATERIAL OVER TOP OF THE EMBEDMENT STONE (B' LAYER) TO 24" (600 mm) PROCESSED AGGREGATE. _ THE CHAMBERS IS REACHED. COMPACT ADDITIONAL LAYERS IN C ABOVE THE TOP OF THE CHAMBER. NOTE THAT PAVEMENT OR 12" j300 mm) MAX LIFTS TO A MIN. 95% PROCTOR DENSITY FOR SUBBASE MAY BE A PART OF THE'C' LAYER. MOST PAVEMENT SUBBASE MATERIALS CAN BE USED IN LIEU OF THIS - WELL GRADED MATERIAL AND 95 % RELATIVE DENSITY FOR LAYER. AAS14TO M43' PROCESSED AGGREGATE MATERIALS. 3, 357, 4, 467, 5, 56, 57, B, 67, 68, 7, 78, 8, 89, 9, 10 EMBEDMENT STONE: FILL SURROUNDING THE CHAMBERS AASHTO M43' B FROM THE FOUNDATION STONE ('A' LAYER) TO THE'C' LAYER CLEAN, CRUSHED, ANGULAR STONE 3.4 NO COMPACTION REQUIRED. ABOVE. A FOUNDATION STONE: FILL BELOW CHAMBERS FROM THE CLEAN, CRUSHED, ANGULAR STONE AASHTO M43' PLATE COMPACT OR ROLL TO ACHIEVE A FLAT SURFACE �•3 SUBGRADE UP TO THE FOOT (BOTTOM) OF THE CHAMBER. 3.4 PLEASE NOTE: 1. THE LISTED AASHTO DESIGNATIONS ARE FOR GRADATIONS ONLY. THE STONE MUST ALSO BE CLEAN, CRUSHED, ANGULAR. FOR EXAMPLE, A SPECIFICATION FOR #4 STONE WOULD STATE: 'CLEAN, CRUSHED, ANGULAR NO. 4 (AASHTO M43) STONE". 2. STORMTECH COMPACTION REQUIREMENTS ARE MET FOR LOCATION MATERIALS WHEN PLACED AND COMPACTED IN 9" (230 mm) (MAX) LIFTS USING TWO FULL COVERAGES WITH A VIBRATORY COMPACTOR. 3. WHERE INFILTRATION SURFACES MAY BE COMPROMISED BY COMPACTION, FOR STANDARD DESIGN LOAD CONDITIONS, A FLAT SURFACE MAY BE ACHIEVED BY RAKING OR DRAGGING WITHOUT COMPACTION EQUIPMENT. FOR SPECIAL LQAD DESIGNS, CONTACT STORMTECH FOI COMPACTION REQUIREMENTS. 4. ONCE LAYER'C' IS PLACED, ANY SOILIMATERIAL CAN BE PLACED IN LAYER D' UP TO THE FINISHED GRADE. MOST PAVEMENT SUBBASE SOILS CAN BE USED TO REPLACE THE MATERIAL REQUIREMENTS OF LAYER 'C' OR 'D' AT THE SITE DESIGN ENGINEER'S DISCRETION. PERIMETER STONE (SEE NOTE 6) EXCAVATION WALL (CAN BE SLOPED OR VERTICAL) 12" (300 mm) MIN ADS GEOSYNTHETICS 601T NON -WOVEN GEOTEXTILE ALL AROUND CLEAN, CRUSHED, ANGULAR STONE IN A & B LAYERS AII 6. mx. .. MC3500 END CAP SUBGRADE SOILS (SEE NOTE 4) PAVEMENT LAYER (DESIGNED BY SITE DESIGN ENGINEER) TO BOTTOM OF FLPXIBLE PAVEMENT. FOR UNPAVED } INSTALIATIONSWNERERIRTINOFROMVEHICLESAMYOCCUR, �� JNCREASE COVER T030' EMO mm). 24" (600 mm)MIN* 12' (300 mm) MIN y / 9" (230 mm) MIN 80" (1525 mm) 7.0' (2.1 m) MAX 535 3 530 525 roo a o� 520,E op w� az 515D­ 510 (A9C � a � U] LICWOF- W 4t - - - - - - - - - - - - - -Ui 41 HIP =ARM a 8.69% o o N N n _ vSEPARATION- ] z - z � z DD z Of 10+00 10-50 1 STORM PROFILE A9-A9C C10 VERT: 1"=10' HORZ: 1'=20' COVER PIPE CONNECTION TO END CAP WITH ADS GEOSYNTHETICS 601T NON -WOVEN GEOTEXTILE STORMTECH HIGHLY RECOMMENDS FLEXSTORM PURE INSERTS IN ANY UPSTREAM STRUCTURES WITH OPEN GRATES t_ DEPTH OF STONE TO BE DETERMINED III II ml BY SITE DESIGN ENGINEER 9" (230 mm) MIN 100" (2540 mm) 12' (300 mm) MIN CATCH BASIN OR MANHOLE NOTES: 1. CHAMBERS SHALL MEET THE REQUIREMENTS OF ASTM F2418-16a,'STANDARD SPECIFICATION FOR POLYPROPYLENE (PP) CORRUGATED WALL STORMWATER COLLECTION CHAMBERS' CHAMBER CLASSIFICATION 6OX101 2. MC 4500 CHAMBERS SHALL BE DESIGNED IN ACCORDANCE WITH ASTM F2787 "STANDARD PRACTICE FOR STRUCTURAL DESIGN OF THERMOPLASTIC CORRUGATED WALL STORMWATER COLLECTION CHAMBERS". 3. THE SITE DESIGN ENGINEER IS RESPONSIBLE FOR ASSESSING THE BEARING RESISTANCE (ALLOWABLE BEARING CAPACITY) OF THE SUBGRADE SOILS AND THE DEPTH OF FOUNDATION STONE WITH CONSIDERATION FOR THE RANGE OF EXPECTED SOIL MOISTURE CONDITIONS. 4. PERIMETER STONE MUST BE EXTENDED HORIZONTALLY TO THE EXCAVATION WALL FOR BOTH VERTICAL AND SLOPED EXCAVATION WALLS. 5. REQUIREMENTS FOR HANDLING AND INSTALLATION: • TO MAINTAIN THE WIDTH OF CHAMBERS DURING SHIPPING AND HANDLING, CHAMBERS SHALL HAVE INTEGRAL, INTERLOCKING STACKING LUGS. _ • TO ENSURE A SECURE JOINT DURING INSTALLATION AND BACKFILL, THE HEIGHT OF THE CHAMBER JOINT SHALL NOT BE LESS THAN 3". • TO ENSURE THE INTEGRITY OF THE ARCH SHAPE DURING INSTALLATION, a) THE ARCH STIFFNESS CONSTANT AS DEFINED IN SECTION 6.2.8 OF ASTM F2418 SHALL BE GREATER THAN OR EQUAL TO 500 LBS/IN/IN. AND b) TO RESIST CHAMBER DEFORMATION DURING INSTALLATION AT ELEVATED TEMPERATURES (ABOVE 73" F / 23" C), CHAMBERS SHALL BE PRODUCED FROM REFLECTIVE GOLD OR YELLOW COLORS. UNDERDRAIN DETAIL NITS STORMTECH CHAMBER IRMTECH END CAP 'LET MANIFOLD J FOUNDATION STONE BENEATH CHAMBERS ADS GEOSYNTHETICS 601T NON -WOVEN GEOTEXTILE STORMTECH END CAP FOUNDATION STONE BENEATH CHAMBERS ADS GEOSYNTHETICS 601T NON -WOVEN GEOTEXTILE .. -ITE DESIGN ENGINEER 4' (100 mm) TYP FOR SC310 & SC-16OLP SYSTEMS 6" (150 mm) TYP FOR SC-740, DC-780, MC-3500 & MG4500 SYSTEMS MC -SERIES END CAP INSERTION DETAIL 12" (300 mm) MIN INSERTION MANIFOLD STUB MANIFOLD HEADER NTS STORMTECH END CAP NOTE: MANIFOLD STUB MUST BE LAID HORIZONTAL FOR A PROPER FIT IN END CAP OPENING. CREST STIFFENING RIB VALLEY STIFFENING RIB MC-4500 TECHNICAL SPECIFICATION CREST WEB UPPERJOINT CORRUaBTInN FOOT NTS WALL 1J U UJ1 :GRATED L LOWER JOINT CORR. a BUILD ROW IN THIS DIRECTION 100.0" (2540 mm) 902' (2291 mm) RDRAIN nn SECTION B$ 12"(300 mm) MIN SEPARATION MANIFOLD HEADER MANIFOLD STUB - 1 30.7" 48.3" (781 mm) 52.a (1227 mm) INSTALLED INSTALLED (1321 mm) NOMINAL CHAMBER SPECIFICATIONS NI- SIZE (W X H X INSTALLED LENGTH) 100.0' X 60.0" X 48.3" - (2540 mm X 1524 mm X 1227 mm) CHAMBER STORAGE 106.5 CUBIC FEET (3.01 ITN) MINIMUM INSTALLED STORAGE' 162.6 CUBIC FEET (4.60 aP) WEIGHT 130.0 Ibs. (59.0 kg) NOMINAL END CAP SPECIFICATIONS - I 35.1" 'I SIZE (W X H X INSTALLED LENGTH) 90.2" X 59.4" X 30.7" (2291 mm X 1509 mm X 781 mm) (891 mm) END CAP STORAGE 35.7 CUBIC FEET (1.01 mN) MINIMUM INSTALLED STORAGE' 108.7 CUBIC FEET (3.08 m') WEIGHT 135.0 Ibs. (61.2 kg) "ASSUMES 12" (305 mm) STONE ABOVE, 9" (229 mm) STONE FOUNDATION AND BETWEEN CHAMBERS, 12" (305 mm) STONE PERIMETER IN FRONT OF END CAPS AND 40% STONE POROSITY. STUBS AT BOTTOM OF END CAP FOR PART NUMBERS ENDING WITH "B" STUBS AT TOP OF END CAP FOR PART NUMBERS ENDING WITH "T' END CAPS WITH A WELDED CROWN PLATE END WITH "C" END CAPS WITH A PREFABRICATED WELDED STUB END WITH "W" PART # STUB B C B MC4500REPE06T 6" (150 mm) 42.54' (1.081 m) - MC4500REPE06B - 0.86' (22 mm) MC450OREPE08T 8" (200 mm) 40.50" (1.029 m) - MC450OREPE08B - 1.01"(26 mm) MC450OREPE10T 10" (250 mm) 38.37' (975 mm) - MC450OREPE10B - 1.33" (34 mm) MC450OREPE12T 12" (300 mm) 35.69' (907 mm) - MC4500REPE12B - 1.55" 39 mm - MC450OREPE15T 15" (375 mm) 32.72' (831 mm) - MC450OREPE15B - 1.70" (43 mm) MC450OREPE18TC 18" (450 mm) 29.38' (748 mm) - MC45DOREPEI8TW MG45DOREPE18BC - 1.97" (50 mm) MG450OREPEIBBW MC450OREPE24TC pq• (g00 mm) 23.05' (585 mm) - MC45DOREPE24TW M0450OREPE24BC - 2.26' (57 mm) MC450OREPE24BW MC450OREPE30BC 30' (750 mm) - 2.95' (75 mm) MG450OREPE36BC 36" (900 mm) - 3.25" (83 mm) MG450OREPE42BC 42" (1050 mm) _ - 3.55" (90 mm) NOTE: ALL DIMENSIONS ARE NOMINAL nm) CUSTOM PRECORED INVERTS ARE AVAILABLE UPON REQUEST. INVENTORIED MANIFOLDS INCLUDE 12-24" (300.600 mm) SIZE ON SIZE AND 15-48" (375-1200 mm) ECCENTRIC MANIFOLDS. CUSTOM INVERT LOCATIONS ON THE MC4500 END CAP CUT IN THE FIELD ARE NOT RECOMMENDED FOR PIPE SIZES GREATER THAN 10" (250 mm). THE INVERT LOCATION IN COLUMN'S' ARE THE HIGHEST POSSIBLE FOR THE PIPE SIZE. SUMP DEPTH TBD BY SITE DESIGN ENGINEER (24" [600 mm] MIN RECOMMENDED) 11+00 MC-45DO CHAMBER 11+50 24' (600 mm) HDPE ACCESS PIPE REQUIRED USE FACTORY PRE -CORED END CAP PART #. MC45DOREPE24BC OR MC450DREPE24BW MC-4500 ISOLATOR ROW DETAIL NTS INSPECTION & MAINTENANCE STEP 1) INSPECT ISOLATOR ROW FOR SEDIMENT A. INSPECTION PORTS (IF PRESENT) A.I. REMOVEIOPEN LID ON NYLOPLAST INLINE DRAIN A.2. REMOVE AND CLEAN FLEXSTORM FILTER IF INSTALLED A.3. USING A FLASHLIGHT AND STADIA ROD, MEASURE DEPTH OF SEDIMENT AND RECORD ON MAINTENANCE LOG A.4. LOWERA CAMERA INTO ISOLATOR ROW FOR VISUAL INSPECTION OF SEDIMENT LEVELS (OPTIONAL) A.5. IF SEDIMENT IS AT, OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. B. ALL ISOLATOR ROWS B.1. REMOVE COVER FROM STRUCTURE AT UPSTREAM END OF ISOLATOR ROW B.2. USING A FLASHLIGHT, INSPECT DOWN THE ISOLATOR ROW THROUGH OUTLET PIPE 1) MIRRORS ON POLES OR CAMERAS MAYBE USED TO AVOID A CONFINED SPACE ENTRY ii) FOLLOW OSHA REGULATIONS FOR CONFINED SPACE ENTRY IF ENTERING MANHOLE B.3. IF SEDIMENT IS AT, OR ABOVE, 3" (80 mm) PROCEED TO STEP 2. IF NOT, PROCEED TO STEP 3. STEP 2) CLEAN OUT ISOLATOR ROW USING THE JETVAC PROCESS A. A FIXED CULVERT CLEANING NOZZLE WITH REAR FACING SPREAD OF 45" (1.1 m) OR MORE IS PREFERRED B. APPLY MULTIPLE PASSES OF JETVAC UNTIL BACKFLUSH WATER IS CLEAN C. VACUUM STRUCTURE SUMP AS REQUIRED STEP 3) REPLACE ALL COVERS, GRATES, FILTERS, AND LIDS; RECORD OBSERVATIONS AND ACTIONS. STEP 4) INSPECT AND CLEAN BASINS AND MANHOLES UPSTREAM OF THE STORMTECH SYSTEM. NOTES 1. INSPECT EVERY 6 MONTHS DURING THE FIRST YEAR OF OPERATION. ADJUST THE INSPECTION INTERVAL BASED ON PREVIOUS OBSERVATIONS OF SEDIMENT ACCUMULATION AND HIGH WATER ELEVATIONS. 2. CONDUCT JETTING AND VACTORING ANNUALLY OR WHEN INSPECTION SHOWS THAT MAINTENANCE IS NECESSARY. A A ° °0000 A °°000000 °a00°o00e W6 C000 00•a0 . y.•p 00000000 e• ..06°0 baOO O P PP"PNW E IWOIPLE• h. `1niur 1 5lraalim, PLASTIC B11P TRASH It V k wUTIONS A11. M.. IL lYInH INC. ,..WARD-..R.�.... 4 5" ORII C 10 FNOT TO SCALE New Trash Rack 1" Holes 30% Opening Area i00000b 000 000 000000 12:1 00000 0 000 000 0 o O 000000 O O 0 Typ. Front Section 00 O 12" o 0 O O O � O 0- 000000 6" (A) Bottom Rack Side Section K DETAIL 12+00 OPTIONAL INSPECTION PORT MC-4500 END CAP TWO LAYERS OF ADS GEOSYNTHETICS 315WTM WOVEN GEOTEXTILE BETWEEN FOUNDATION STONE AND CHAMBERS 10.T (3.1 m) MIN WIDE CONTINUOUS FABRIC WITHOUT SEAMS WP-R ADJACENT TRAVEL LANE ASPHALT PAVEMENT WIDENING 1Yi EDGE OF EXISING PAVEMENT OM DETERMINED IN FIELD) TX PROPOSED TACK COAT EAYERB CONSTRUCTMM JOINT EXISTING ASPHALT LAYERS - PROPOSED ASPHALT L ------------ EXISTING SUBBASE PROPOSED SUBBASE COMPACTED SUBGRADE CONSTRUCTION JOINT DETAIL ® REMOVE EXS"NG ASPHALT LAYERS TO EXISTING SUBBASE AND REPLACE WITH PROPOSED ASPHALT MLBNNG LAYERS ® PROPOSED MNNLe 1 y INCH TNIX ASPHALT SURFACE COURSE (SEE NOTE 5) x MINIMUM 12 MKES. COR GREATER AS NECESSARY TO ABUT WE ME WINDINESS EOF EXISTING ASPHKT LAYERS AS DETERMINED BY CORES MEE NOTE 3, NOTES: 1. ASPHLT PAVEMENT WIDENING SHALL HAVE A PAVEMENT DESIGN N AC(NHI E WITH CURRENT WOT PROCEDURES AND BE APPROVED BY THE ENGNEER. 2, THE PAVEMENT DESIGN FOR ASPHALT PAVEMENT WIDENING S&I. NEST OR EXCEED THE DEPTHS AND TYPES OF THE LAYERS OF EXISTING PAVEMENT. SUBSURFACE DRAINAGE OF WE EXISTING AND PROPOSED PAVEMENT SNN1 BE ADDRESSED IN THE PAVEMENT DESIGN 3. A MINIMUM OF THREE CORES SHALL BE TAKEN AMND THE CENTER OF THE ADJACENT TRAVEL LANE TO DETERMINE THE TYPE ND THICKNESS OF EXISTING M AL PAVEMENT LAYERS. THESE CORES SHL BE SPACED NO MORE THAN 5OO FEET ART. 4. THE ADJACENT TRAVEL LONE SHKL BE MILLED A IRNJM OEPM OF 14 11 AND REPLACED WITH AN ASPHALT SU i COURSE TO MATCH THE PROPOSED PAVEMENT WIDENING SURFACE COURSE, UNLESS WAVED BY E ENSNEER. 5. THE ENGINEER MAY REQUIRE THE MILLING DEPTH OF WE EXISTING PAVEMENT TO BE ADJUSTED TO ACHIEVE AN ACCEPTABLE PAVEMENT CROSS -SLOPE MAD EFFECTIVE SURFACE MANAGE. 6. EXISTING PAVEMENT MARKINGS AND MARKERS WITH THE PROJECT LIMES SHALL BE RESTORED SUBJECT TO THE APPROVAL OF THE ENCXEFR. 7. FINK TRANSVERSE PAVEMENT TE-IN SMLL CONFORM TO THE HEd/EIENTS OF SECTION 315.0540 OF THE SPECIFICATIONS EXCEPT THAT AL JOINTS AT TE-IN LOCATIONS SHALL BE TESTED USING A V FOOT STRAIGHTEDGE IN ACCORDANCE WITH THE REQUIREMENTS OF SECTION 315.07(N OF THE SPECIFICATIONS, 5 ASPHALT PAVEMENT WIDENING RDAs A`� ANDARDS FOR WIDENING SUBJECT TO TRAFFIC VIRGMA DEPARTMENT OF TRANSPORTATION 315 BEET T aF 1 REVISION DATE 303.02 2 )ASPHALT PAVEMENT WIDENING C 10 NOT TO SCALE END -SECTION 12" - 60'' PIPE HUB EMO ON OUTLET END -SECTIONS SPIGOT END ON DIET ENO -MOON q/X z To CONERI BE PLAN \ L B Od RR BW W S A ( / D E PAY OE GFCTIEIN Y-Y rmn VIEW END SECTION DIMENSIONS PIPE DMETER A R C 12.. N" 20" 2' 0" 4''0' 2'-0" 15- 6.. 2..3. r-9.. X.. 2..6- ?I' y .. 3.-7. 2'-6.. 6..1.. 4.-0.. 27•• p •. .•-0•. 2'.1•' 6-1. 4-6- M.. 1.-0.. A.-6.. p-7 6.-I .. 5.-0. 33.. 1.- C-pi .. 2'-0 .. 7.- 5.-6. 1. p-0' 5'-3• Y-10 • W- 6'-n' 42.. 1-9, 5.-3.. T-11 B"2.. "-V 1.• 2'-0' B'-0" 2'9" B'-Y• T-0" 5 - 7 3" 5'-5" Y-9 B'4 7-e- .. .-, i. .. .. .. .. .. .... ALTERNATE END -SECTION 12'' - 60" PIPE NEB END ON OUTLET END SECTIONS OF END ON INLET EHO-SECTMM 7 _-- • CONCRETE TO E LL E JJ„ .W0 MINIMUM L CPLAN �1 B dWE1LA Aoe.� OF PPE STEEL FABRIC REIniCRCEMENI J- A \ / E L END VIEW SECTION X-X END SECTION DIMENSIONS PIPE DIAMETER A B C D E 12.. 4.. 2' O' q.-p. 6 .q.. ..0. 15• P, '. ^ • .P' 2'.B• y 2•.p 3_%G -p•• 3•.0• 21 N 5".. 24' p.. 3.q, 2..6.. 6.q.. 4..0.. 27 'f.0•. 0 6'-Y " JO^ .•.B• Y.7 �• 6•.1 •• 5•.0'• 33•• 1. I Lq•• 3•-3 •• 6•q •• 5'-6'• 6.. 3.-3_3 . 22p I-V 54, 2..p D..g 2.. p, 6.y.. 7.-6. 5-0 3,.y.. 6.. PAY J NE NOTES PIPE LENGTHS SHOWN W KANS ARE I BASED ON END -SECTION DESIGN SHOWN ON THE LEFT. F THE CONTRACTOR ELECTS TO USE THE KTERNATE DESIGN SHOWN OM THE ROM, LENGTHS WILL E REAMED BY THE DPTEENCE N dMENSIXN 'n1 . FLARED END -SECTION FOR 12"-60" CONCRETE PIPE CULVERTS b2 VIRCIMA DEPARTMENT OF TRMNSP"tlAT10N 12+50 540 535 530 525 520 515 510 13+00 SHIMP ENGINEERING LAND PLANNING I SITE DESIGN I CIVIL ENGINEERING I PROJECT MANAGEMENT Design Focused Engineering 912 East High SONSt Phone: 434227-5140 ChadoaesvilM. VA22902 shimp-engineenng.LOm VSMP PLAN ALBEMARLE COUNTY, VIRGINIA PROFFIT ROAD TOWNHOMES SOUTH SUBMISSION: 2020.03.20 REVISION: 1) 2020.07.16 2) 2021.03.30 FILE NO. DETAILS SHEET C10 OF 12 3 ES-1 DETAIL '� 0 CIO NOT TO SCALE STORMWATER /532 \ OFFSITE WOODS \ \ OFFSITE IMP. \ A-0 12AC \ TOTAL PRE-DEV DA=3.68AC 530 , \ % 1 5 6 1 bm_ i 1 Y— �% L- /v 1 1, = 1 L, �4 = I \ 5 4=0.02AC \ = I 1 = I I a\ / o— p7D - PULE j 7 7 7 7 7'7'7"7 `717 \ 7 7 —� OHU OHU HU OHU — 0 U — OHU OH — HUL�g�,iU 0 U O U _ O� u HU / OH (� �7 U OFFSITE T_U_RE 5�8 4 — — — � �V 0_ 4, — -. A—O.4OAC 1 1 v� z zzzzzzz zz z\uzzzz zzz zz, V / POLE \ / —--- / / c \ 5 "'ddd t 000 _ -- 1 1 .— ✓,....., \ N22°24'08' 4 .68' \ ND 2�.58 IRON v FOUND 456.10 Dy./7 \ 17 \\ '7 , _ \ —III III IIII I F 1 U 1IIII 1 _VA7v—III III —III IIII — II ; , CALCULATIONS WATER QUANTITY POA ONSITE 0FFSITE ACRES 3.15 0.53 CN 64 61 ONSITE Q1 = 1.20 CFS RV = 0.12 OFFSITE Q1 = 0.13 CFS NOTES 1. ALL SOILS 27B — ELIOAK LOAM — 2 TO 7% SLOPES, HSG B. WATER QUALITY 0.37 AC WOODS 2.72 AC TURF 0.25 AC IMPERV LEGEND = III 5 — III w ON -SITE IMPERVIOUS 32 — , III —III 00 ON -SITE MANAGED TURF II1 ICI II \\ F F F= IF I ON -SITE WOODS \ III III —III \ OFF -SITE IMPERVIOUS OFF -SITE MANAGED TURF I \ \ \ \ III III \ o I III OFF -SITE WOODS TREATED FI F F \\ I 11111 II O ONSITE� W�DS A=6.36AA — / / 2� _ \ C \\ \ \ \ \� \ \ A \ \ 526 t \ I \ TOTAL ONSITE � F FDA=3. 15A6 F T6C=16 MINUTES< TIN1E OF F — — — — 522 OI -� �CEN I RA � 10 F CTES F �s26 F F F I B-0 I�IIINU F / F z I TOTAL OFTSITF _ I F �J — — — —- 526 -�-- DA=0.53A �S24 IRON i =16 MINUTES FOUND _ II II I J ,II I I ONSITE TURF A=�2.48AC _ _ — — _ _ _ IIIIIIIIIIIIIIIIIIIIIII—III— I II II II --- -- _ 5' ONEXCLU GHT OF I _ _ _ _IIIIIIIIII IIIII III I — ND EG ESS D B. 505_ ,5, — �� �1 III ;IIIIIIIIIIIII i�t ICI I o IIIIIIIIIIIIIIIIIIIIIIIIII I / N IT I M = 530 — SET 6°08'S9"W F I �ti A=0.31 C — 530 F \ / i F UND o J/ \ 53 ---� SHIMP ENGINEERING LAND PLANNING I SITE DESIGN I CIVIL ENGINEERING I PROJECT MANAGEMENT Design Focused Engineering 912 East High Street Phone: 434227-5140 Chanottemile, VA U902 shimp-engineenng.wm VSMP PLAN ALBEMARLE COUNTY, VIRGINIA PROFFIT ROAD TOWNHOMES SOUTH SUBMISSION: 2020.03.20 REVISION: 1) 2020.07.16 2) 2021.03.30 532 — — r � FILE NO. \ / I \Ike, \ 18.041 \ I\ ���G \\ PRE -DEVELOPMENT r/ \ \\ DRAINAGE 001 \ \ \ SHEET C11 OF 12 20 0 20 � 0 � , 60 ,. 11 Scale: 1 "-20' C 532 I FFSITEITREATED TURF \ I/ 534 \ I\\ I / 52 TOTAL OFFSTTE TREATED _ I A-0 19AC Dense Trees \ OUZ A=0.32AC — — 5 TOC=5'MINUTES (ASSUMED) TOTAL ONSITE TREATED A=2:84A_C _ TOC=5 MINUTES (ASSUMED) — � 36 \ � � I 36 _ _ � � � A=0.12AC / T _P— % O moo* / + �\ f — L-526 34 w W W W W �� W •L W W\ w W W w W \W W w W 4x I �RTSl�❑ ❑ ❑ ❑ �W too ❑❑❑❑ W ❑❑❑❑ 024 I ❑ a1:—I ❑ ❑ ❑ �� a ICI I� III III III III 1I 1 III 32� III III III ICI III III ❑ ❑ ❑ m❑I I III III= 111 IIIII III III ICI IIIIIIIIIII ��; III III III —III III —III III �" ❑ ❑ ❑ F I FII III III❑ III III III III III I II 1—III III —III III III �I III �I 1 w ICI 1 III III IIII ❑IIII III III III— -I I� ❑ ❑'� ❑ �I0 III / III III III III ICI ❑ ❑❑ � IIIIIII III III III - \ -III N w l III W III III W W w W l l l IIII / -I III III �I N�� I a I III III I I III i I ° I I I I I v III III P I I III I I � III ICI I I� ��� I III I 11 � 1I �1 � I � I �I 1 1I 11—III I �p I %I I ICI I I� I II I i�1 I Y Li❑� _ III III -III III III III w III II III II� II > III III II III I� II - f� I Ma W IIIIII—III - \ ❑ ❑ 1IIIIIIIII—III °I 1 III w _—III w ❑ III —III —III III �❑ III II IIIII IIIIII ❑ ❑ I— I� -I IIN 1=1 1=1��-I 11 I III11�11I I� ICI ICI 11 11 l = I ICI 11= 11 11 11I 1 J' W W - o 1111 I I= I I I I v�_ IIIIIII I ❑ o ❑ ❑ v III IWI 2,' _� T1 Tl l III III III III III III - _ - ❑ ❑ ❑ ❑ 26 w , ,IIII 11 111; 1�I 1� 5111I ICII 1I III 1 11 pI III III W s s2p_ 59 F- �w w W W\ W W w III III III w- w I� III III —III III I I I ❑ ❑ ❑ ❑ w=9111 a� o 1I 1 1 III III w _� wI III III \I `� STORMWATER CALCULATIONS \` WATER QUANTITY 6 I � �- /_ /_ //f�tiI -/�/ /5�/'� ,/' � ❑/ / �❑❑E� T❑RE❑❑52II�6 NIIIII -III _—IIIIII-�III /III/IIII� IIIII IIIIIIIIIII III_IIII�❑ IIIII � _IIIIIIIII ❑IIII- III III_III❑III ��tIII _t III I1I�—_❑III�III� tIII _III1I1i II 11�j�� . �I �� 11I� II� IIIIIIIIII -�IlII ��IiII-IIIIIIIII �II ��I 1l_IIIIII ��llIIII�1IlIII-=--- - I� 4i_- --�=IIIIII �sIIz-IIIaI --II—I I�_ II-- IIIIII�1I IIII ��IIIIII �I—I`I -IIIII�IIIII❑IIIII---II AI �II -s IIIII uIIIIII -IIIII-I �� I W� I _�W����°J���bY -ILI1� F�C�I a._ �1lrClI_ o �° �W�✓��W�' ��WWW ; W�W��������WJW�- ' �W���W� /�W�/WW�- W���W� �W����W ���W���-X���WJ' ��W��W�=J. --W��WW X-JW ���W�• ��WWW✓�V��W�/• -W��W�W���w�w_W��W � �W��W�X� _����W��a_�WW���W�_ IIIIIII IIII__wIII_ IIIIICCIIIIIIIIIIIIII �—_-IIIIIIIIIIIIIIIII&IIIIIIII --� IIIIIIIII CIIII IIIIII�IIIIIII CCII �w�III IIIIIIIIIIII�IIIII IIIIII� III —�IIIIIIIII ��IIIIII�III IIIIIIIIIIIII IIIIIPIIIII IIIIII �IIIIIIIIIIIIIIIII �IIIIIIIIIIIIIII �IIIIII 1III�I1I1I —IIIII�W�IIII/IIIIIII ,—hC✓W�III/ CII W�III /CIIIIII0�IIIIIIIII _—IIII�w IIIIIIIW�I IIk�III��w�II CIIIIIW�IIIIIIIIIIII CC�wIIIIII�hIII —IIIIIIIW�IIIIIIII IIIIII --II�II �IIIZ�II—IIIIIIIIIIII� IIIIII —�II w�I ❑�— � II��� /IIII�W�II — IIIIwW IIII wV� 1 wI I II �1 v I 11 _ D L A e NsD i PgL nA N FN 0 I NcGu Us S eITdE DEE nS g IG Ti Nns e . Ce I Vri I Ln Eg N G INE� E�R II�NM G � � 20' D INAGE EME T �fo)) (no)SHIMP ENGINEERING x�I I I 1� I , 912 ast High $tred Phon: 430.227-5140 ChetlotlevlVshimp-engineenhI I IX� 4� �_j -IIII Ik X1X-X. X x I— o 45183 IIIONAL -I4 I 4 I 1=IFm I � _rt11IvsMP PLAN II 1 ALBEMARLE COUNTY, VIRGIN EIN A ATED CI PROFFIT ROAD DenseA=1.95Ac I1—IITOWNHOMESI —I=L 75 SOUTHI L ONSITE UNTREATED ❑F7777F'F' SUBMISSION: 2020.03.20❑ L TOC�5 IN TE ME s II17 1— REVISION:❑�zQF GV RLAND 1) 2020.07.16 FL W 2) 2021.03.300 _s 00 n 3 TOTAL DRAINAGE AREA0— 32=3.68AC OFFSITE UNTREATED TURF IA=0.21 AC O SI ET EDTU 532 ONSITEUNTREATEDIMP.ONSIT U T AT DTUR A= .89 C .FLOW TOTAL OFFSITE UNTREATED A=0.003AC A=0.31A FILE NO.21A TOC=18 MINUTES (CALCULATED) 18.041 POST -DEVELOPMENT DRAINAGE 001 20 0 20 40 60 SHEET C12 OF 12 Scale: 1=20' C12 T