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HomeMy WebLinkAboutWPO201800012 Plan - VSMP 2018-01-31V5MP PLAN FOR LEGEND EXIST NEW DESCRIPTION 16' FC X 1 25 TC TOP OF CURB ELEVATION 16" X 125 SPOT ELEVATION 16, T W X 125 TW TOP OF WALL ELEVATION 16OBW x 125BW BOTTOM OF WALL ELEVATION �)17 BENCHMARK i -- STORM SEWER RD Ro ROOF DRAIN SEWER LINE 6"W WATER LINE GAS ____.__- GAS GAS LINE GHE OVERHEAD ELECTRIC WIRE --- --- UrE UNDERGROUND ELECTRIC OHT OVERHEAD TELEPHONE LINE ---- - i vr------- UGT UNDERGROUND TELEPHONE LINE DRAIN INLET (DI) OO STORM/SANITARY MANHOLE I-_ C PLUG d ®V WATER VALVE & BOX -i- FIRE HYDRANT 01 ®M WATER METER -1 LIGHT POLE -- a UTILITY POLE PROPERTY LINE — -- — ADJACENT PROPERTY LINE VACATED PROPERTY LINE BUILDING SETBACK ----< PARKING SETBACK SANITARY EASEMENT —_"'— GRADING EASEMENT DRAINAGE EASEMENT ----- -- - UTILITY EASEMENT WATER EASEMENT _v----- .-..._._ ACCESS EASEMENT STORM DRAINAGE EASEMENT TREE LINE �— -� FENCE STREAM ;fit 2 - — 12 — INTERVAL CONTOUR 300 oo INDEX CONTOUR Cu -2 CG-2 STANDARD 6" CURB CC--6 CG-6 COMBINATION 6" CURB & GUTTER F-7-1 -��-- CONCRETE PAVEMENT /SIDEWALK ^L RIPRAP ASPHALT GRASS EC-2 MATTING EC-3 MATTING WETLAND 10 10 PARKING COUNT IIiIIIII CROSSWALK HANDICAP ACCESSIBLE AISLE A-N CG-12 HANDICAP PARKING GREENMONT HOPWORK5 TMP 12100-00-00-09200 5AMUEL MILLER MAGISTERIAL DISTRICT ALBEMARLE COUNTY, VIRGINIA VICINITY MAP SCALE: 1"=9,000' CI C2 C3 C4 C5 C6 C7 IMAGE PROVIDED BY GOOGLE MAPS SHEET INDEX - COVER SHEET - EROSION * SEDIMENT CONTROL N - EXISTING CONDITIONS - EROSION PLAN PHASE I EROc-�iON CLAN PHASE 2 OWNER / DEVELOPER Murray, James B. Jr. & David W. Kudravetz, Trustees; Keene Land Trust 427 Park St. Charlottesville, VA 22902 ZONING RA - Rural Areas EC - Entrance Corridor Special Use Permit Approved by Board of Supervisors on January 10, 2018. LEGAL REFERENCE TMP 12100-00-00-09200 - DB 3929 PG 648 (5.75 Acs) - DB 305 PG 441 (PLAT) BENCHMARK NAVD88 SOURCE OF BOUNDARY & TOPO (1) Boundary survey information is a compilation of deeds, plats, and a field survey performed by Stanley Land Surveys, PLC on 11/29/17. Topographic survey also provided by Stanley Land Surveys. (2) A title report was not provided. All easements and encumbrances may not be shown an this plan. BUILDING HEIGHT Maximum structure height = 35' Proposed Height = 20' SETBACKS Fron t: 75' Side: 50' Rear: 50' ARRATI VE - STORMWATER MANAGEM ENT DETAILS - EROSION * SEDI M ENT CONTROL DETAILS EXISTING USE Farm Building PROPOSED USE Agricultural produce packing plant, Section 10.2.2.23 of the Zoning Ordinance. Approved January 10, 2018 (SP201700077). FLOOD ZONE According to the FEMA Flood Insurance Rate Map, effective date February 4, 2005 (Community Panel 51003C0525D), this property does not lie within the Zone AE 100-year flood plain. WATER & SANITARY SERVICES Water is to be supplied by an existing well on site. Bathroom facilities will be serviced by subsurface drainfields. CRITICAL SLOPES No critical slopes are located on the parcel. WATERSHED This site is located within the Totier Creek Watershed. This site is located within a water supply protection area. LAND USE SCHEDULE EXISTING Area % Building 1,375 SF - 24.2% Parking Area 4,308 SF 75.8% Impervious area 5,683 SF 2.4% Open space 234,162 SF 97.6% Total= 239,845 SF (5.51 ac.) PROPOSED Area % Building 7,375 SF 22.4% Parking Area 25,485 SF 77.6% Impervious area 32,860 SF 13.7% Open space 206,985 SF 86 3% Total= 239,845 SF (5.51 ac.) L? O U JUs/F M. SHIMP 5 3 ✓ 6 w� �O ��sSroNaL ��� NOTE: 1. THE SIZE OF THE SYMBOLS MAY VARY FROM WHAT IS SHOWN. PROJECT DESCRIPTION, GENERAL NOTES, EROSION & SEDIMENT CONTROL NOTES, AND SEQUENCE OF CONSTRUCTION PROJECT DESCRIPTION THIS PROJECT PROPOSES A 6,000 SF BUILDING FOR AGRICULTURAL PROCESSING THE TOTAL AREA OF DISTURBANCE IS 1.57 ACRES. EXISTING SITE CONDITIONS ALL WORK SHALL BE COMPLETED ON THE SUBJECT PARCEL, ALBEMARLE COUNTY TMP 121-92. SUBJECT PARCEL IS OWNED BY KEENE LAND TRUST. ON -SITE SLOPES AVERAGE 10%. STORMWATER FLOWS INTO AN EXISTING DITCH AT THE SOUTHWEST CORNER OF THE PROPERTY. ADJACENT PROPERTIES THIS PROPERTY IS BORDERED TO THE NORTH BY PLANK ROAD; TO THE EAST BY KEENE POST OFFICE; AND TO THE SOUTH AND WEST BY VACANT LAND OWNED BY JAMES MURRAY & DAVID KUDRAVETZ. SOILS THIS SITE CONTAINS THE FOLLOWING SOIL TYPES BASED ON NRCS SOIL MAPS FOR ALBEMARLE COUNTY VIRGINIA: SOIL SLOPES HSG DEPTH PERMEABILITY 51C MANTEO 7 TO 15 MORE THAN CHANNERY SILT PERCENT D 80" WELL DRAINED LOAM 62B NASON SILT 2 TO 7 MORE THAN LOAM PERCENT B 80" WELL DRAINED OFFSITE AREAS: THERE ARE NO OFFSITE ACTIVITIES ASSOCIATED WITH THIS PROJECT. IF ENCOUNTERED, EXCESS MATERIAL SHALL BE HAULED TO A SITE WITH AN APPROVED EROSION AND SEDIMENT CONTROL PLAN. CRITICAL AREAS THERE ARE NO CRITICAL EROSION AREAS ON THE SUBJECT PARCEL. EROSION & SEDIMENT CONTROLS 1. 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. 2. 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. 3. TEMPORARY SEDIMENT TRAP: A TEMPORARY SEDIMENT TRAP SHALL BE INSTALLED PER THE EROSION AND SEDIMENT CONTROL PLAN FOR THE PURPOSE OF DETAINING SEDIMENT AND SILT WITHIN STORM WATER RUNOFF. THE TRAPS SHALL REMAIN IN PLACE UNTIL THE SITE IS STABILIZED UNLESS OTHERWISE NOTED ON THE PLAN. 4. 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. 5. PERMANENT SEEDING: ALL DENUDED AREAS SHALL BE SEEDED IN CONFORMANCE WITH STD. AND SPEC. 3.32. 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. 6. 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. 7. INLET PROTECTION: A STONE WEIR SHALL BE INSTALLED AS A SEDIMENT FILTER LOCATED AT THE PROPOSED DROP INLET. REFER TO DETAILS ON SHEET C11. 8. OUTLET PROTECTION: RIP -RAP SHALL BE PROVIDED AT THE OUTFALL OF CONVEYANCE CHANNELS, CULVERTS, AND STORM SEWERS. 8. TEMPORARY DIVERSION: TEMPORARY DIVERSION SHALL BE INSTALLED AS SHOWN ON THE EROSION AND SEDIMENT CONTROL PLAN AND DETAILS. THE DIVERSIONS SHALL BE INSTALLED PRIOR TO SIGNIFICANT LAND DISTURBING ACTIVITIES AND SHALL REMAIN IN PLACE UNTIL THE SITE IS STABILIZED UNLESS OTHERWISE NOTED ON THE PLAN. MANAGEMENT STRATEGY AND SEQUENCE OF CONSTRUCTION THE FOLLOWING ARE THE PROPOSED MANAGEMENT STRATEGIES AND DETAILED SEQUENCE OF CONSTRUCTION: PHASE 1 1. INSTALL CONSTRUCTION ENTRANCE WITH CULVERT AND ASSOCIATED INLET AND OUTLET PROTECTION. 2. CONSTRUCT THE SEDIMENT TRAP AND SILT FENCE. 3. CONTACT THE ENGINEER AND ALBEMARLE COUNTY FOR INSPECTION AND APPROVAL OF ALL E&S CONTROL MEASURES. 4. UPON APPROVAL OF ALL E&S CONTROL MEASURES, BEGIN WHOLESALE CLEARING, GRADING AND STOCKPILING. 5. PROTECT SOIL STOCKPILES WITH SILT FENCING AND TEMPORARY SEEDING AS NECESSARY. 6. MAINTAIN ALL E&S CONTROL MEASURES. 7. CONSTRUCT SITE IMPROVEMENTS AS SHOWN ON THE PLAN. PHASE 2 1. CONVERT SEDIMENT TRAP INTO DETENTION POND WITH 36" CMP RISER. INSTALL YARD DRAINS AND PIPES TO POND. 2. INSTALL BIOFILTER AND PIPE DETENTION POND TO PRETREATMENT CELL OF BIOFTILER. 3. ESTABLISH AND MAINTAIN PERMANENT STABILIZATION FEATURES, WHICH INCLUDES THE ESTABLISHMENT OF A PERMANENT VEGETATIVE COVER OVER THE ENTIRE DISTURBED AREA. UPON COMPLETION CALL FOR FINAL INSPECTIONS. STORM WATER MANAGEMENT: OUR PROJECT MEETS WATER QUANTITY STANDARDS SET FORTH BY 9VAC25-870-66(B) BY COMBINATION OF A DETENTION POND AND BIOFILTER THE WATER DISCHARGES TO A NATURAL CHANNEL WITH A FLOW RATE THAT SATISFIES THE ENERGY BALANCE EQUATION. WATER QUALITY STANDARDS SET FORTH BY 9VAC25-870-63 ARE SATISFIED THROUGH THE USE OF A BIOFILTER AND CONSERVED OPEN SPACE. THE REQUIRED PHOSPHORUS REMOVAL IS EXCEEDED BY 0.08 LB/YR ACCORDING TO THE VIRGINIA RUNOFF REDUCTION METHOD SPREADSHEET. 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 WEIGHT 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 USING EMISSION -CONTROL EQUIPMENT ON CONTRACTOR OPERATED EQUIPMENT, SHUTTING DOWN MOTORIZED EQUIPMENT WHEN NOT IN USE, AND ACTIVELY CONTROLLING DUST EMISSIONS THROUGHOUT THE PROJECT. EROSION & SEDIMENT CONTROL PERMITTING 1. CONTRACTOR SHALL BERESPONSI LE FOR OBTA INING 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 1-800-55,2-7001 PRIOR TO THE START OF WORK. 2. WHEN WORKING ADJACENT TO EXISTING STRUCTURES, POLES, ETC., THE CONTRACTOR SHALL USE WHATEVER METHODS THAT ARE NECESSARY TO PROTECT STRUCTURES FROM DAMAGE. REPLACEMENT OF DAMAGED STRUCTURES SHALL BE AT THE CONTRACTOR'S EXPENSE. 3. 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. 4. 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. 5. CONTRACTOR SHALL NOTIFY AND COORDINATE ALL WORK INVOLVING EXISTING UTILITIES WITH UTILITY OWNERS, AT LEAST 72 HOURS PRIOR TO THE START OF CONSTRUCTION. 6. CONTRACTOR SHALL IMMEDIATELY REPORT ANY DISCREPANCIES BETWEEN EXISTING CONDITIONS AND CONTRACT DOCUMENTS TO THE OWNER AND ENGINEER. 7. 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 NOV RELIEVE THE THE CONTRACTOR FROM THE RESPONSIBILITY OF ADHIERENCE TO THE CONTRACT AND FOR ANY ERROR THAT MAY EXIST. 8. FIELD DENSITY TESTS SHALL BE PERFORMED AT A FREQUENCY OF ONE TEST PER LIFT PER 10,000 SO FT OF MATERIAL PLACED AND COMPACTED TO WITHIN 95 (%) PERCENV OF STANDARD PROCTOR USING A GRID PATTERN OF 100 FT PER LIFT/OR AS CERTIFIED BY A LICENSED GEOTECHNICAL ENGINEER. EROSION & SEDIMENT CONTROL NOTES: 1. ALL VEGETATIVE AND STRUCTURAL EROSION & SEDIMENT CONTROL (E&S) PRACTICES WILL BE CONSTRUCTED AND MAINTAINED IN ACCORDANCE WITH THE MINIMUM SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATION 4VAC50-30. 2. THE PLAN APPROVING )AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO COMMENCEMENT OF LAND DISTURBING ACTIVITY AND ONE WEEK PRIOR TO FINAL INSPECTION. THIS REQUIREMENT CANI BE WAIVED AT THE DISCRETION OF THE PLAN APPROVING AUTHORITY. 3. ALL EROSION AND SEDIWENT 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 ONSITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING BUT NOT LIMITED TO, OF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION AND SEDIMENT CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN REVIEWING AUTHORITY. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION AND SEDIMENT' CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN REVIEWING 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 RUN-OFF PRODUCING STORM EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 10. INSTALL AND MAINTAIN CONSTRUCTION ENTRANCES FOR ENTIRE PROJECT AT ALL LOCATIONS WHERE VEHICLES ENTER/LEAVE THE WORK AREA AND WHERE SOIL IS STOCKPILED. BIOFILTER INSTALLATION NOTES 1. CONSTRUCTION OF THE BIORETENTION AREA MAY ONLY BEGIN AFTER THE ENTIRE CONTRIBUTING DRAINAGE AREA HAS BEEN STABILIZED WITH VEGETATION. IT MAY BE NECESSARY TO BLOCK CERTAIN CURB OR OTHER INLETS WHILE THE BIORETENTION AREA IS BEING CONSTRUCTED. THE PROPOSED SITE SHOULD BE CHECKED FOR EXISTING UTILITIES PRIOR TO ANY EXCAVATION. 2. THE DESIGNER AND THE INSTALLER SHOULD HAVE A PRECONSTRUCTION MEETING, CHECKING THE BOUNDARIES OF THE CONTRIBUTING DRAINAGE AREA AND THE ACTUAL INLET ELEVATIONS TO ENSURE THEY CONFORM TO ORIGINAL DESIGN. SINCE OTHER CONTRACTORS MAY BE RESPONSIBLE FOR CONSTRUCTING PORTIONS OF THE SITE, IT IS QUITE COMMON TO FIND SUBTLE DIFFERENCES IN SITE GRADING, DRAINAGE AND PAVING ELEVATIONS THAT CAN PRODUCE HYDRAULICALLY IMPORTANT DIFFERENCES FOR THE PROPOSED BIORETENTION AREA. THE DESIGNER SHOULD CLEARLY COMMUNICATE, IN WRITING, ANY PROJECT CHANGES DETERMINED DURING THE PRECONSTRUCTION MEETING TO THE INSTALLER AND THE PLAN REVIEW/INSPECTION AUTHORITY. 3. TEMPORARY E&S CONTROLS ARE NEEDED DURING CONSTRUCTION OF THE BIORETENTION AREA TO DIVERT STORMWATER AWAY FROM THE BIORETENTION AREA UNTIL IT IS COMPLETED. SPECIAL PROTECTION (MEASURES SUCH AS EROSION CONTROL FABRICS MAY BE NEEDED TO PROTECT VULNERABLE SIDE SLOPES FROM EROSION DURING THE CONSTRUCTION PROCESS. 4. ANY PRE-TREATMENT CELLS SHOULD BE EXCAVATED FIRST AND THEN SEALED TO TRAP SEDIMENTS. 5. EXCAVATORS OR BACKHOES SHOULD WORK FROM THE SIDES TO EXCAVATE THE BIORETENTION AREA TO ITS APPROPRIATE DESIGN DEPTH AND DIMENSIONS. EXCAVATING EQUIPMENT SHOULD HAVE SCOOPS WITH ADEQUATE REACH SO THEY DO NOT HAVE TO SIT INSIDE THE FOOTPRINT OF THE BIORETENTION AREA. CONTRACTORS SHOULD USE A CELL CONSTRUCTION APPROACH IN LARGER BIORETENTION BASINS, WHEREBY THE BASIN IS SPLIT INTO 500 TO 1,000 SO. FT. TEMPORARY CELLS WITH A 10-15 FOOT EARTH BRIDGE IN BETWEEN, SO THAT CELLS CAN BE EXCAVATED FROM THE SIDE. 6. IT MAY BE NECESSARY TO RIP THE BOTTOM SOILS TO A DEPTH OF 6 TO 12 INCHES TO PROMOTE GREATER INFILTRATION. 7. PLACE GEOTEXTILE FABRIC ON THE SIDES OF THE BIORETENTION AREA WITH A 6-INCH OVERLAP ON THE SIDES. IF A STONE STORAGE LAYER WILL BE USED, PLACE THE APPROPRIATE DEPTH OF #57 STONE ON THE BOTTOM, PIPE PACK 57 STONE TO 3 INCHES INSTALL THE PERFORATED UNDERDRAIN#� E ABOVE THE UNDERDRAIN PIPE, AND ADD APPROXIMATELY 3 INCHES OF CHOKER STONE/PEA GRAVEL AS A FILTER BETWEEN THE UNDERDRAIN AND THE SOIL MEDIA LAYER. IF NO STONE STORAGE LAYER IS USED, START WITH 6 INCHES OF #57 STONE ON THE BOTTOM, AND PROCEED WITH THE LAYERING AS DESCRIBED ABOVE. 8. OBTAIN SOIL THE MEDIA FROM A QUALIFIED VENDOR, AND STORE IT ON AN ADJACENT IMPERVIOUS AREA OR PLASTIC SHEETING. AFTER VERIFYING THAT THE MEDIA MEETS THE SPECIFICATIONS, APPLY THE M4EDIA IN 12-INCH LIFTS UNTIL THE DESIRED TOP ELEVATION OF THE BIORETENITION AREA IS ACHIEVED. WAIT A FEW DAYS TO CHECK FOR SETTLEMENT, AND ADD ADDITIONAL MEDIA, AS NEEDED, TO ACHIEVE THE DESIGN ELEVATION. 9. PREPARE PLANTING HOLES FOR ANY TREES AND SHRUBS, INSTALL THE VEGETATION, AND WATER ACCORDINGLY. INSTALL ANY TEMPORARY IRRIGATION. 10. PLACE THE SURFACE COVER IN BOTH CELLS (MULCH, RIVER STONE OR TURF), DEPENDING ON THE DESIGN. IF COIR OR JUTE MATTING WILL BE USED IN LIEU OF MULCH, THE MATTING WILL NEED TO BE INSTALLED PRIOR TO PLANTING (STEP 9), AND HOLES OR SLITS WILL HAVE TO BE CUT IN THE MATTING TO INSTALL THE PLANTS. 11. INSTALL THE PLANT MATERIALS AS SHOWN IN THE LANDSCAPING PLAN, AND WATER THEM DURING WEEKS OF NO RAIN FOR THE FIRST TWO MONTHS. FINAL BMP INSPECTION CHECKLIST ❑ CONTRIBUTING DRAINAGE AREAS HAVE BEEN ADEQUATELY STABILIZED WITH A THICK LAYER OF VEGETATION AND EROSION CONTROL MEASURES HAVE BEEN REMOVED. ❑ VERIFY THE PROPER COVERAGE AND DEPTH OF (MULCH, VEGETATION, OR SOIL MATTING HAS BEEN ACHIEVED FOLLOWING CONSTRUCTION, BOTH ON THE FILTER BED AND THE SIDE -SLOPES. ❑ INSPECT THE PRE-TREATMENT FQRBAYS AND FILTER STRIPS TO VERIFY THAT THEY ARE PROPERLY INSTALLED, STABILIZED, AND WORKING EFFECTIVELY BEFORE OPENING THE FACILITY TO RUNOFF. ❑ CHECK THAT QUTFALL PROTECTION/ENERGY DISSIPATION MEASURES AT CONCENTRATED INFLOW AND OUTFLOW POINTS ARE STABLE. ❑ FOLLOW-UP INSPECTION AND AS -BUILT SURVEY//CERTIFICATION HAS BEEN SCHEDULED. ❑ GPS COORDINATES HAVE BEEN DOCUMENTED FOR ALL INFILTRATION PRACTICES ON THE PARCEL. BMP Maintenance Requirements BMP Duties Detention Pond Annually: (37.86492,-78.55781) -Inspect banks of upstream channels for evidence of animal burrows, boggy areas, or gully erosion that may undermine embankment integrity -Inspect condition of all trash racks for evidence of clogging and debris accumulation -Check whether manhole can be open and operated -Inspect internal and external side slopes of the pond for evidence of sparse vegetative cover or erosion and make repairs immediately Biofilter Twice During Growing Season: (37.86474,-78.55770) -Spot weeding, erosion repair, trash removal, mulch raking Annually: -Inspect for dead plants, concentrated flows, excessvie ponding, or signs of bypassing -Prune trees and shrubs. Supplement mulch to maintain 3" layer. Spring inspection and cleanup. Once every 2-3 years: -Remove sediment in inflow points Every 3 years: -Replace mulch layer Conserved Open Space Twice per year: -Bush hog "The owner is responsible for proper maintenance of all BMP measurements 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. STABILIZATION 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. 11CROSSING 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.Excovated 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. U JUyyT . A S MNW Li o. 5 3 -���1) 4� �O SIONAL E� 11. MAINTAIN ALL EROSION AND SEDIMENT CONTROL UNTIL THE COMPLETION OF FINAL STABILIZATION. UNLESS OTHERWISE NOTED ON THE PLANS REMOVE ALL EROSION & SEDIMENT CONTROLS FOLLOWING THE ESTABLISHMENT OF A PERMANENT VEGETATIVE COVER AND COMPLETION OF FINAL STABILIZATION. from- building �►� - - y �, / inv.561.32'- - PVC pipe-7 - Rio 55 5 Y _ �- � T.M. 121 —91 In�- J�J6,� BRASS INCORPORATED D. B.1 447 195 PLAT 554 61 _ 280 D.B. 650-429 D.B. 95-24 PLAT D.B.93-374 DESC. 10 548 /.: w� , - - -- _ "J ' f - - 548 ' -- _ 1 r / : i , x l^ 6/1 d 544 - - ,� 5 46 r: 2 k: J 540 e ,oAM d y ON 538 ,.� _IF- - 8 co t _ 534 r fi t� j 549 f ' ov 532 fiJ,. 530 , �r Well 535 T. M. 121 —1 / S h °tree �� v - -- — - - --- , EA RIDGE, L.L.C. �, 534 D.B.1992-23 i D.B.1607-488 THRU 492 PLAT D.B.1551 —344 PLAT i D.B.1327-176 PLAT - •' `32 -. N: 3838192.54 __ D.B. 18-402 PLAT I�_; - t - / E. 1 1466549.12 y T.M.1r21-92 '" ^M U R RAY_9- tiJAfv�ES B- J R DAVI D W. KUDRAUETZ TRS; KEENE LAND TRUST - D.B.31929648 fi D.B.305-441 PLAT 1� PF 50' S 280 3� , NS 2 30' w of SOILS LEGEND 51 C — Manteo channery silt loam, 7 to 15 percent slopes 62B — Nason silt loam, 2 to 7 percent slopes Soil Type Boundary i- Overland Flow Direction 30 0 30 60 90 v JUSTI A SHIMP > it4o. 5183 �o ' fo w �0 {� Z w N Wff W d Z T.M. 121 -91 z v W BRASS INCORPORATED D.B.1447-195 PLAT V Z a (PORTION) D.B.861 -280 w o s D.B. 650-429 a T.M.121 -92 D.B. 95-24 PLAT 0 0.0007 ACRE D.B.93-374 DESC. `j - 29 S.F. w D Route 712— Plank Road 01 EW 15" CMP cNv �68 40' ROW --. - - - 11IN_ 564 - pp � > 55 MPH - - avement , IN 0 55 ___ _ � __._ - D edge of p V OUT 9 0' -277% D.B. 2+8 & <o ' - P z: 1 w - - -- mayiboxes P F - - - (a ' mailb r a 7 44 — `� I _Lj 545 -� - -- Cq ;, 1 "Underground --- 2 ' .: . 6 ;� • .: ,... • r . ,.. . ,,-. • - _ — U� We` phone , N 60 (+� i Oo - -- itch 2' - -- - EC-2 Op 0 58 C Ex. Building y �`o� '� E 1 ---- _--- e ck `9 , fi - 55 tba C _ _ - --- IMP fi 3 o - - - - o Y1Q - _ — ——— FAQ �O ? SS T.M.MINCORPORATED BRA �'�SSIONAL D.B.1447-195 PLAT I Approx-280554 .. -- - - `_-- - -Ditch _-_ ' Drain;rld D.B. 650-429 - 24 PLAT 552- EC- _- 2- - -- — = LOGOtio} :D. . 95374 DESC. STQCKe1E D B.9 S' 550 f f C ! 548 548 : , 544 542 o - - _ - - - - 5 3 t = - - 540 Q) o 538 _ 536 i - -- -- 536 r, / t t - � -- -- 5 0 SF 534 ---- - \ \ fw 0,1 Conserved 6 .b. Open Space - - / 4 P , f � _ a ` 530 --x --r '—X Well __ 535 T.M. 121-1 - house' SEA RIDGE-534 D.B. 1992-23 D.B.1607-488 THRU 492 PLAT { VC D.B.1551 —344 PLAT, , l fi D.B. 1327 76 PLAT - _ - D.B. 18-402 PLAT,, _ , %� T M 1 1 9'.� r r s -- - -- - 0 2 2 � -- — t r MURRAY �A� �Xz, �r SOIL EROSION & SEDIMENT CONTROL SYMBOLS KEENE LAf� 11 r SYMBOL N0. TITLE KEY D }- . B . 3 ­kk/JL' J{ `4,l 3.02 CONSTRUCTION ENTRANCE CE f, / X X X 50 S/ :•..� �.. ,, 3.05 SILT FENCE SF r O U r r`�'� ;�'�``v///�/� 3.07 INLET PROTECTION IP 3.09 TEMPORARY DIVERSION DIKE DD L. J hhh / i •. C % - .. 3.31 TEMPORARY SEEDING TS 3.32 PERMANENT SEEDING slUj ��-�% /.. y ® I ® I ® LIMITS 0E DISTURBANCE EXISTING CONTOUR PROPOSED CONTOUR Date 01 /31 /18 Scale /45 1" = 40' 40 0 40 80 120 Sheet No. Scale: 1 "=40' C4 OF 7 File No. 17.022 Rni i+P 71 i- Plnnl Rnod (PORTION) T.M.121-92 0.0007 ACRE 29 S.F. ,,,—f�IEW 15" CMP IN INV. OUT 559.0' c5 T.M. 121-91 BRASS INCORPORATED D.B.1447-195 PLAT D.B.861 —280 D.B. 650-429 D.B. 95-24 PLAT D.B.93-374 DESC. SIN ATED.M- CORPOR BRAS 1 tl ' D.B.1447-195 PLAT 1 4zo t 2A e Approx.., 554 -D.13.861-280 �< - Ditch `" Drain"lfeld D.B. 650-429 6,000 SF D.B. 95-24 PLAT z -- - Location 552 EC- 24P. o BUILDING �Y �`�' D.B.93-374 DESC. _ - SF oFFE 550 _ - = °oo Or 2 00 548 �. 15 N'fL0 LAST-- ' INLtNE DRAt W/ - 548 - �'ID � ; DOME ORATE SEE- , I DETAIL SNEE C6 544 - 46 542 - 53 0 540 52 ; a. fi -� _�. _ 6 / r 3 i - 538 5 536 36 50 00 SF ETENTION PON � � ,1 Conserved 534 T 7 T 4 (3 .8649�;-78.55781 -' pen pace 0 S ' 532 - f- 244 IPVC -- - f >r -R-4-fftbOM€- r.. F - TREA_ 535 57 STb 4" PERFORATED T.M. 121-1 house _x. � y ,_ y P—VC-UNDERDRAtN � 1 SEA RIDGE, L.L.C. � 534 L D.B.1992-23 D.B'.1 607 488 THRU 492 PLAT BL ER f D.B.1551-344 PLAT i 1,194 \SF�� T , D.B.1327-176 PLAT (37.864741 ._ 32 4 PVC i ' - 1, c. ,� 1 D.B. 18-402 PLAT r`-.. i, 78.5577 STANDPIPE W/ �, j.... SOIL EROSION & SEDIMENT CONTROL SYMBOLS SYMBOL N0. TITLE KEY CONSTRUCTION ENTRANCE SILT FENCE INLET PROTECTION TEMPORARY DIVERSION DIKE TEMPORARY SEEDING PERMANENT SEEDING LIMITS OF DISTURBANCE EXISTING CONTOUR PROPOSED CONTOUR v JLI Ff M. SHIMP OL�* N�� ,183 � � w o SSIONAL -• • -• .• 120 Scale: 1 4• i �1. i i j BIOFILTER DETAIL -------------------------------- DESIG11 OF OUTLET PROTECT1ti,'i FROM A ROUND PJPE FLOWING FULL MINIM1:11 TAILWATER COWITION (TW - 0.5 DIAMETER) Outlet W = Do + La Pipe Min Diameter, D0 1 eti L,3 t xQkOr 0.5DO Q Q II! 1 ! 4 CL�] 59 20 10 0 Recorruiande-d Min, dAD-61a 3 5 ID 20 d`Qe, t.t.;wC. 4 3 .L;O 1000 550 , i Dome Grate 545 ; - Top of 24" PVC Riser _ I Elev. 541.40' V 100 JYR WSE_541.85' I _ _ _ 10" 10- YR WSE 540.714 540 17 1-YR WSE 539.37' Top Elevation 542.0' Bottom Elevation 538.0' - 15 3" Orifice I 313.42 LF I �OPE_ @ 5.9B% Inv. 538.00 . 535- 10+00 10+50 DETENTION POND DETAIL i HORZ. 1 `=5' VERT. DERFORATED UNDERDRAIN 4" PVC TANDPIPE W/_DOME _GR-ATE NYLOPLAST INLINE DRAIN WITH DOME GRATE 11) DIISGAJATED DUCTILE IRrAl _ ORATE To MAT01 BASIN 0.0, Md1121Ue PILE HURIAL DEPTH PER?IFE INVER I ACCORDING TO MANUFACTURER PLA0151TAHEOFF RECOMMENDATILM _•��/ i,31 VARIOUS TYPES D'. INLET & OUTLET ADAPTERS AVAILA&LE: 4'- 30' FOR CORRUGATED HDPE iADS N-12iHANCOR DUAL Y al. ADai ANCCR 5INGLE VALLI *12 hP, PVC SEWER (EX: SDR 351 PdCWN{EX: SCH4Dl P'JC--'CGC905. CORRUGATED 8 RI GEED PVC WATERTIGHTJO1NT (CORRUGATED HOPE SIi,W W THE SACAFILL MATERIAL SHALL EE GRtiSt!ED STUNE DR CI'TYiER OPMULAR MATEAIAt ME cTING TrE REQUIREI IVIT7 OF CL3,531, CLASSRGRCLAS',SII)bIAIERIALASDEFITIEDINASIMD23'11. BELrTiI IG �S RACKFILL FGRI SUR;ACE DRAINAGE laUTS 91A3.L e-E VLACEJ 8 Cgt+AF'AC lED U:'lI FDR?GMiY ItJ ACCQRD'AtICE Wf(t i AS tM DL121, ! - 1 'Ca7E FRS SS+1+lt EEGKTII61PG1 PE.2 ,x�.rL1 5;3 Apr �.�,;.,,: !II PRINT UU Lt k51' NFU VAITER It1+v Vi DRAWNSY EW MATEFML - 71f111KMAAYE -CtAN�Gt CifiTf! C ICN aPi6 JrJUL R H`H •SS MaLtLDfFOk1J:0 H LO.q„5'nASP rPPIE.4R PICN S ih-:E"FIP7 D4FORD GA ASIO "?H�E�". %1p'YIi.PONt CRRUG17Ep.C.EiPpSf}.12 rratl��-�s.1u+1 'h.1t OR PG55E551 d! Ff.l-PR JITN IOT DATE trL35a1-0 7�y� g� PHHi1TQ1 J}b14W R 1{5 ER OR U4 HS i1.E'J E .f nsC CPI-P �St FAX 1494792 24W _ l�Iq��W!' H i tP SP:CE ERN 2"' 'EChD{I�AL IH rA7}41 r,N SKI.011IEREI!1 ✓✓ ww 3 c 30'G{}6iE GPAtESHM14x fY LP`G1 R\Tit{G - RMEDIV ttdH PEWIECTNO+11AHE PGPrOp!.CTr:+I CF i.<. VJ-JF )t .It{v 1:4>,d1,111' ! 1hLE C^11i,`,UIED nERaIN GR bNllJfrlL1";:Rc rri Aj.{y It DATE 8:-f:.19 H1tE f1€L1H551i11 pLYtE GRAZE AE AA7I1riERE.RCV fCk'.I!E Dk_rr tCci:'RE TO Or!tui±; QUICK SPEC HSTAL1ATLC9IDE AL 1 fGfiHIUi`Etl EZL'EP t D'; SPE irl ITicN P_.:l JI 4 Rcfofine--L . ,:na r.,,+�ai. DWG WE A SUIU 1;10 5111T 1OF1 DWp Np. 7:Y73,119457 REY p ..Afl.. Greenmont Hopworks IVIUU1111--U LU-4UO r`Ucie_INW:C cil1U IUICUIdII UILWI L11--J1U11 r'U1111 MIN MAX Earth Protective Lining SLOPE SLOPE ALLOW. n=.03 EC-2: n=.05 n=.015 DITCH A (ac) C Tc (min) 110 (in/hr) Q10 _A L _A R Ft/Ft Ft/Ft VEL. VEL.* Qn VEL* DEPTH Qn DEPTH O.54', 0:73 5.0 7.01 2.79 2 2 0.02 0.14 f 0.14 3. 7 O. S6 2 0154 0:73 5.0 7.01 2.79 ! 2 2 0.02 0.07 61014 2.71 0.64 "Velocity calculations performed using average slope for this application 560 555 550 545 540 535 530 529+50 24" PVC Overflow Structure w/ Dome Grate Top 535.40' y 100 yr WSE 535.98' 710 yr WSE 535.60' _ - TT-yr- 1SE 535.44' Mulch Layer Top 535.15' Bottom Elev. 534.90' Ex. Soil 80%-90% Sand 10%-20% Soil Fines 3%-5% Organic Matter 2.0' Soil Media Layer Bottom Elev. 532.90' C� O #57 Stone o 1.4' Storage Layer O O Bottom Elev. 531.50' 61 LF - 15 4" Perforated Underdrain HD'PE @ 4,10% Inv, Elev. 531.50' BIOFILTER PROFILE 2' 10+00 10+50 ST5 - ST6 STORM PROFILE 1 "=10' VERT. 1 "=30' HORZ. 560 555 550 545 540 535 530 11 +or 550 _ _ _ _ ____ __-... __ _... _ _.. - __ ___ _.. _---_....-.. ---- __ ._._._ _-_I 550 i i .. 545 . .......... .... _ . __----- ._ _.._ - _...._ ... DETENTIOfV....P(7N[T_........._ 545 � Proposed Grad 540 _ _ B1.0FILTEI3- _ _ ___ _ _.._ ___.-_ _._ _._._._. _----___.� 540 I INV. 538.0' i _ - -U15 gg% xlstn535 -g_._Grgde_-1I 535 3H3D.P42E- B 530 I _. _ _ _ _...... _.__�p1y: __.-. O_. _ 1-__-- ___ _ ___ _ _ . ___J 530 9+50 10+00 10+50 11 +00 ST3 - ST4 STORM PROFILE 5 545 I i 540 I i 535 530 525 I 520 ' 111=10' VERT. 1 "=30' HORZ. ST1 ST2 545 o <r c� Lri ric,._ -- 540 n Ln Ca- o BIOFILTER _ _C-ropos- -d _........... 535 RIP RAP TO DI I C _ - --- > INV. 531.5' " 37-:-i8 EE...- - -15" _ __.. _ - - 530 HDPE ©1.34% INV. OUT 531 0' -- -----_ ___ _._ __ -- _-- i ___ _....... _ _ _._._.. ____. --------- .-_.__.-- _._ .__ 525 I 1 _ ---- _ _ . -_- _) 55 +00 10+50 11 +00 11 +5020 ST1 - ST2 STORM PROFILE 1 "=10' VERT. 1 "=30' HORZ. 550 545 540 535 U JUy�!'YIONAL M. SHIMP lao�/,� 45 83 I "d I �O � k�` Xi _s >. fitl,j J F PROFILE iJ`+L :"- MP N. r� JP,• ) F ir�.i)r � ��t _ra3_ v O zi. -1AVf VF"I-f a �7 t iJrr,,i'j 2< T � [ /1 Li �. � L � I -?1 � r L; L _ r�l I i l' ,'-�'• � , r �. I ^ r � � Vr INa fit ISS r 1 :- 1TT 111,°,��'I Jr� t •' '�� I±;I� FLAN IPr.-PIN�1 _.=tip: L SECTION A -A A 111111i1111111 W"Iter tap t-A I inch must be tn1 :hiffed with a ii illnum 1 inch balllcock shutoff valve s iphlyin a leash hose xvith a dia111etel of 1.5 inches fat adequate constant ltreswule Vl ash water must be canied awati bom the enhance to an apin oved settl i area to I emlove sedilllt mf _All sednllerlt shall be prevented h clll entelillC, StO1111 draWs, ditches of � 'atel ci>nl se PAVED 'WASH RACK ORIGINAL GROUND ELEV. EL=A *SEE PLATE 3.13-1 3 '�C'A -E PAVED CONSTRUCTION ENTRANCE WITH WASH RACK (CE) Not to Scale Area 2 DRY STORAGE D2 67 CU. YD./ACRE EL=B Area 1 WET STORAGE 67 CU. YD./ACRE D 1 (EXCAVATED) FILTER CLOTH ORIGINAL GROUND EL=C ELEV. COARSE AGGREGATE** CLASS I RIPRAP CROSS SECTION OF OUTLET CLASS I RIPRAP i LENGTH=6' DIVERSION DIKE L TOE OF FILL O o n O SILT FENCE n n * DISTANCE IS 6' MINIMUM IF FLOW IS TOWARD EMBANKMENT INLET PROTECTION (IP Not to Scale 1. SET THE STAKES. 6' MAX. FLOW � I" 3. STAPLE FILTER MATERIAL TO STAKES AND EXTEND IT INTO THE TRENCH. 2. EXCAVATE A 4"X 4" TRENCH UPSLOPE ALONG THE LINE OF STAKES. 4. BACKFILL AND COMPACT THE EXCAVATED SOIL., SHEET FLOW INSTALLATION (PERSPECTIVE VIEW) POINTS A SHOULD BE HIGHER THAN POINT B. DRAINAGEWAY INSTALLATION (FRONT ELEVATION) ('_6 \ SILT FENCE (SF) C7 / Not to Scale TABLE 3.39-A ADHESWES USED FOR DUST CONTROL Water Dilution Type of Adhesive (Adhesive: Water) Nozzle ApIplication Rate Galltons/Acre **COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5 Anionic Asphalt Emulsion 7:1 Coarse ,'pray 1,200 OUTLET (PERSPECTIVE VIEW) Latex Emulsion Resin in Water Acrylic Emulsion y 12.5:1 4:1 -Fine Spray Fine Spray 235 300 Sediment Trap Design Data No. A B C H (ft.) Z (ft.) Weir Length DA Wet Vol. D I Wet Vol. Cy Dry Vol. D2 Dry Vol. Cy (ft.) (Acs.) (Reg.) (ft.) (Prov.) (Req.) (ft-) (Prov.) (Non -Traffic) Acrylic Emulsion 7:1 Coarse Spray 450 1 538 540 542 1.0 2 9 1.4 95.8 2 134 95.8 2 184 (Traffic) 3.5:1 Coarse Spray 350 4 TEMPORARY SEDIMENT TRAP DETAIL (S - ------------------------------------------------------ C7 Not to Scale DUST CONTROL (DC Not to Scale ORGAN C MULCH MATERIALS AND A13PLICATION RATES RATES: MULCHES: NOTES: per Acre Per 1000 sq. ft. Straw or Hay 11 - 2 tons 70 - 90 lbs. Free from weeds and coarse (Minimum 2 matter. Must be anchored. tons for Spread with mulch blower or winter cover) 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 aeras. Apply with mulch blower or by hand. Wood Chips 4 - 6 tons 185 - 275 lbs. Free of coarse matter. Air- dried. Treat with 12 lbs nitrogen per ton. Do not use in fine turf areas. Apply with mulch blower, chip handler, or by hand. Bark Chips 50 - 70 cu. 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. MULCHING (MU Not to Scale PERMANENT SEEDING SPECIFICATIONS February 16 through April 30: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Annual Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass when slopes are greater than 3:1. May 1 through August 15: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Foxtail Millet - 20 lbs/acre. Add 20 lbs/acre Indian grass when slopes are greater than 3:1. August 16 through October 31: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Annual Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass on slopes greater than 3:1. November 1 through February 15: Kentucky 31 Fescue - 128 lbs/acre; Red Top Grass - 2 lbs/acre; Winter Rye - 20 lbs/acre. Add 20 lbs/acre Indian grass on slopes greater than 3:1. 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 County 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 (23 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. ' \ PERMANENT SEEDING (PS) Not to Scale TABLE 3.3I-G TEMPORARY SERVING PLANT tNIATERIALS, SEEDING RATES, AND DATES SEIsUINCs RATE N(?RTHa SOUTH' �a PLANT 3tt slt ells zlis sit elt SPECIES CHARACTERISTICS Ac�, iEt9() Rz to to to to to to 4130 8115 fill•11:3t) 9/1 IItl5 . .OATS ) bv. {off to 100 lbs., z lbs. X - X - - Uses spring vat6et[us (e.g., 1Ynt+lu). tAvuw setiva not less than 54 16s.) kY]~4 2 bu. [up to 110 lbs.. 3.5 Ihx. X - :C X - X Uso for Iota fall r,eedirtgs, wtnti:r rx Sala inrralc not less than SE) tbs.) cover. 'rvlcratns cold and law mnlJ:tura. 4;EEth9AN MILLET 50 1bs, approx. t 16. - X X - Warne -season annual. Oars at first (Sctaria ita ic• lrrryt. Mayboo added to rttmmcr nyiA[d5. ANNUAL RYEGRA5S` 60 tbs. 111, lbs. X X X - X May be atided in mixes. Will t.oiint tnuhi-flnruni} ntaew out of mctsf rianria. WEEPING IS lbs. 516 ors. - X - X - Waatnseasnv perennial. May LOVE:GRASS btutrh. Tolerates but. dxy slopes Era sp. curvvla and acid, infartitc soils. May ha u4ttirxt to [alias. t~OREAIJ 25 lbs. approx. 1'h X X - X X - Warm sraeuon atueual Iegvtrre. LESFEUEZA` Ihs. Tolerates acid soils. May tx tlrs to sti vlacea added to mixes, a Northern Piedmont and Mountain region. See Plates 3.22-1 and 3.22-2. e Southern Piedmont and Coastal Plain, '' May be used as a cover crop with spring seeding. d May be used as a cover crap with fall seeding. X May be planted between Elrese dales. - May no be planted between these dates. TEMPORARY SEEDING Not to Scale 3. 10.25' PIPE OUTLET TO FLAT AREA WITH NO DEFINED CHANNEL 9, o% IM0 ]* I ONO 6„ SECTION VIEW FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER OUTLET PROTECTION (OP C7 Not to Scale 5.0' (MIN.) 'IPE OUTLET TO WELL IEFINED CHANNEL loll 6" 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. 2 OUTLET PROTECTION (OP2) C7 Not to Scale 4.5' min. 13 TEMPORARY DIVERSION DIKE DD C7 Not To Scale Compacted Soil ° M. SHTMP > '� Li I / 13 � l � � �SSIONAL a� Date 01 /31 /18 Scale Sheet No. C7 OF 7 File No. 17.022