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HomeMy WebLinkAboutWPO200800064 Plan - E&S Erosion Control Plan 2013-01-14w EROSION & SEDIMENT CONTROL NARRATIVE I. PROJECT DESCRIPTION THE PURPOSE OF THIS PROJECT IS TO DEVELOP 104 LOTS WITH APPROXIMATELY 9,800 LINEAR FEET OF ROADS, WITH WATER, SANITARY SEWER, AND STORM DRAINS. THIS PROJECT WILL INVOLVE DISTURBING APPROXIMATELY 61.01 ACRES OF WHICH 22.95 ACRES WAS DISTURBED WITH WPO 2007-00054. THIS PLAN DISTURBS AN ADDITIONAL 38.06 ACRES. II. EXISTING SITE CONDITIONS THE PROPOSED SITE IS LOCATED AT THE END OF FONTANNA DRIVE. THE ENTRANCE TO THE SITE IS APPROXIMATELY 1.4 MILES FROM THE INTERSECTIONS OF ROUTE 250 AND ROUTE 20. THE SITE IS ZONED RA, R1 AND IS PRIMARILY WOODED WITH SOME EXISTING STRUCTURES AND A FEW OPEN AREAS. A CREEK RUNS THROUGH THE WESTERN END OF THE SITE AND EVENTUALLY DRAINS INTO THE RNANNA RIVER. III, ADJACENT PROPERTIES THE SITE IS BOUNDED TO THE WEST BY FONTANNA AND CASCADiA, TO THE NORTH BY FRANKLIN, TO THE SOUTH AND THE EAST BY ASHCROFT. IV, OFF-SITE AREAS THERE WILL BE NO TRANSPORT OF SOIL MATERIAL TO OR FROM THIS SITE AT THIS TIME. V. SOILS ACCORDING TO USDA SCS SOIL MAPPING, THE PROJECT SITE LIES ON SOIL TYPES: MYERSVILLE VERY STONY SILT LOAM -59E, RABUN CLAY LOAM -716, RABUN CLAY LOAM -71C, RABUN CLAY LOAM -71D, RABUN CLAY LOAM -71E, RAYBUN CLAY -72B3, RABUN CLAY -72C3, RAYBUN CLAY -72D3, STARR SILT LOAM -796. MYERSVILLE VERY STONY SILT LOAM -59E: OCCURS ON 25 TO 45 PERCENT SLOPES. HYDROLOGIC SOIL GROUP B. THE K -FACTOR IS 0.32. RABUN CLAY LOAM -718 OCCURS ON 2 TO 7 PERCENT SLOPES, HYDROLOGIC SOIL GROUP B. THE K -FACTOR RANGES FROM 0.28 TO 0.32. RABUN CLAY LOAM -710 OCCURS ON 7 TO 15 PERCENT SLOPES. HYDROLOGIC SOIL GROUP B. THE K -FACTOR RANGES FROM 0.28 TO 0.32. RABUN CLAY LOAM -71D OCCURS ON 15 TO 25 PERCENT SLOPES. HYDROLOGIC SOIL GROUP B. THE K -FACTOR RANGES FROM 0.28 TO 0.32. RABUN CLAY LOAM -71E: OCCURS ON 25 TO 45 PERCENT SLOPES. HYDROLOGIC SOIL GROUP B. THE K -FACTOR RANGES FROM 0.28 TO 0.32 RAYBUN CLAY -7283 OCCURS ON 2 TO 7 PERCENT SLOPES, SEVERELY ERODED. HYDROLOGIC SOIL GROUP B. THE K -FACTOR RANGES FROM 0.28 TO 0.32. RAYBUN CLAY -720 OCCURS ON 7 TO 15 PERCENT SLOPES, SEVERELY ERODED. HYDROLOGIC SOIL GROUP B. THE K -FACTOR RANGES FROM 0.28 TO 0.32. RAYBUN CLAY -72D3 OCCURS ON 15 TO 25 PERCENT SLOPES, SEVERELY ERODED. HYDROLOGIC SOIL GROUP B. THE K -FACTOR RANGES FROM 0.28 TO 0.32. STARR SILT LOAM -79B: OCCURS ON 2 TO 7 PERCENT SLOPES. HYDROLOGIC SOIL GROUP C. THE K -FACTOR IS 0.28. VI. CRITICAL AREAS CARE SHALL BE TAKEN TO STABILIZE ALL SLOPES AND PREVENT EROSION. CARE SHALL ALSO BE TAKEN TO MINIMIZE THE TRANSPORT OF SEDIMENT ONTO FONTANNA DRIVE. VII. STORMWATER MANAGEMENT CONSIDERATIONS STORMWATER MANAGEMENT QUANTITY AND QUALITY CONTROLS FOR THIS SITE ARE TO BE PROVIDED IN SWM FACILITIES N0, 1, 2, AND 3. VIIL OFF-SITE ACTIVITIES OFF-SITE ACTIVITIES FOR THIS PROJECT ARE LIMITED TO FINAL ROAD CONSTRUCTION OF FONTANNA DRIVE EXTENDED, TM 62-28D, AND TM 62-28C. IX, EROSION AND SEDIMENT CONTROL MEASURES ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE CONSTRUCTED AND MAINTAINED BY THE CONTRACTOR IN ACCORDANCE WITH THE LATEST EDITION OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK. SYMBOLS, DETAILS, AND DIMENSIONS USED ARE TAKEN FROM THE HANDBOOK, AS WELL AS THE VIRGINIA DEPARTMENT OF TRANSPORTATION'S ROAD AND BRIDGE STANDARDS, VOLUME I, 2001. A. STRUCTURAL PRACTICES 1. SAFETY FENCE (SAF), 3.01: SAFETY FENCE SHALL BE PROVIDED AS INDICATED ON DRAWINGS. 2. CONSTRUCTION ROAD STABILIZATION, (CRS): SHALL BE PROVIDED AS SHOWN ON DRAWINGS. 3. TEMPORARY CONSTRUCTION ENTRANCE (CE), 3.02: TEMPORARY CONSTRUCTION ENTRANCES SHALL BE PAVED IN ACCORDANCE WITH ALBEMARLE COUNTY REQUIREMENTS. A MINIMUM WATER TAP OF 1" MUST BE INSTALLED WITH At MINIMUM 1" BALLCOCK SHUTOFF VALVE SUPPLYING A WASH HOSE WITH A DIAMETER OF 1.5" FOR ADEQUATE CONSTANT PRESSURE. WASH WATER MUST BE CARRIED AWAY FROM THE ENTRANCE TO AN APPROVED SETTLING AREA TO REMOVE SEDIMENT. ALL SEDIMENT SHALL BE PREVENTED FROM ENTERING STORM DRAINS, DITCHES OR WATERCOURSES. MAINTAIN EXISTING CONSTRUCION ENTRANCE PROVIDED WITH WPO 2007-00054. 4. SILT FENCE (SF), 3.05: SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER RUNOFF FROM SHEET FLOW AS INDICATED ON THE ATTACHED SITE PLAN. 5. TEMPORARY DIVERSION DIKE (DD), 3.09: TEMPORARY DIVERSION DIKES SHALL BE PROVIDED AS SHOWN OR AS NEEDED TO DIVERT SEDIMENT -LADEN RUNOFF TOWARDS THE TEMPORARY SEDIMENT BASINS AND TRAPS. 6. TEMPORARY FILL DIVERSION (FD), 3.10: PROVIDE TO DIVERT STORM RUNOFF AWAY FROM THE UNPROTECTED SLOPE OF THE FILL TO A STABILIZED OUTLET OR SEDIMENT TRAPPING FACILITY. 7. TEMPORARY RIGHT OF WAY DIVERSION (RWD), 3.11: PROVIDE TO SHORTEN THE FLOW LENGTH WITHIN A SLOPING RIGHT-OF-WAY, THEREBY REDUCING THE EROSION POTENTIAL BY DIVERTING STORM RUNOFF TO A STABILIZED OUTLET. 8. DIVERSIONS (DV), 3.12: PROVIDE DIVERSIONS AS SHOWN ON PLAN. 9. TEMPORARY SEDIMENT TRAP ST), 3.13: TEMPORARY SEDIEMENT TRAPS SHALL BE PROVIDED TO DETAIN SEDIMENT - LADEN RUNOFF FROM SMALL DISTURBED AREAS LONG ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. 10. TEMPORARY SEDIMENTBASIN (SB), 3.14: TEMPORARY SEDIEMENT BASINS SHALL BE PROVIDED TO DETAIN SEDIMENT -LADEN RUNOFF FROM DISTURBED " AREAS IN "WET" AND DRY" STORAGE LONG ENOUGH TO ALLOW THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. 11. TEMPORARY SLOPE DRAIN (TSD), 3.15: PROVIDE TO TEMPORARILY CONDUCT CONCENTRATED STORMWATER RUNOFF SAFELY DOWN THE FACE OF A CUT OR FILL SLOPE WITHOUT CAUSING EROSION. 12. STORMWATER CONVEYANCE CHANNEL (SCC), 3.17: PROVIDE FOR THE CONVEYANCE OF CONCENTRATED RUNOFF WATER TO A RECEIVING CHANNEL. 13. OUTLET PROTECTION (OP), 3.18: PROVIDE OUTLET PROTECTION TO PROTECT THE OUTLET STRUCTURE BY REDUCING THE VELOCITY AND ENERGY OF CONCENTRATED STORMWATER FLOWS. 14. RIP RAP (RR), 3.19: PROVIDE RIP RAP TO SLOW THE VELOCITY OF CONCENTRATED RUNOFF WHILE ENHANCING THE POTENIAL FOR INFILTRATION. 15, LEVEL SPREADER (LS), 3.21: INSTALL LEVEL SPREADERS AS SHOWN IN DRAWINGS. 16. TEMPORARY VEHICULAR STREAM CROSSING (SC) 3.24: TEMPORARY VEHICULAR STREAM CROSSING PROVIDE MEANS FOR CONSTRUCTION TRAFFIC TO CROSS FLOWING STREAMS WITHOUT DAMAGING THE BANKS. 17. SOIL STABILIZATION BLANKETS AND MATTING (B/M), 3.36: PROVIDE SOIL STABILIZATION BLANKETS AND MATTING AS SHOWN ON THE PLANS. IN AREAS WHERE SEEDING OR HYDROSEEDING OF SLOPES ARE UNSUCCESSFUL, PROVIDE EC -2 BLANKETS AND OVERSEED. 18. DUST CONTROL (DC), 3.39: PROVIDE DUST CONTROL IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT OF DUST WHERE ON-SITE AND OFF-SITE DAMAGE IS LIKELY TO OCCUR IF PREVENTIVE MEASURES ARE NOT TAKEN. B. VEGETATIVE PRACTICES 1. TOP SOILING & STOCKPILING (TO), 3.30: TOPSOIL WILL BE STRIPPED FROM AREAS TO BE GRADED AND STOCKPILED FOR LATER USE. STOCKPILES ARE TO BE STABILIZED WITH TEMPORARY VEGETATION AND HAVE SILT FENCE INSTALLED ALONG THE LOWER PERIMETER. STOCKPILES SHALL BE LOCATED AS SHOWN ON THE PLANS. 2. TEMPORARY SEEDING (TS), 3.31: ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR EXTENDED PERIODS OF TIME SHALL BE SEEDED WTH FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING GRADING. SEED SELECTION WILL BE DEPENDENT ON THE 11ME OF YEAR IN ACCORDANCE WITH THE EROSION AND SEDIMENT CONTROL HANDBOOK. 3. PERMANENT SEEDING (PS), 3.32: PERMANENT SEEDING SHALL BE PROVIDED ON SITE TO PROVIDE STABILIZATION FOR ALL DISTURBED AREAS. SEEDING RATES ARE IN POUNDS PER ACRE. FOR HIGH MAINTENANCE LAWN AREAS APPLY 200-250 POUNDS OF KENTUCKY 31 OR TURF -TYPE TALL FESCUE. FOR GENERAL SLOPES 3:1 OR LESS APPLY 128 POUNDS OF KENTUCKY 31 FESCUE, 2 POUNDS OF RED TOP GRASS, AND 20 POUNDS OF A SEASONAL NURSE CROP. FOR LOW MAINTENANCE SLOPES STEEPER THAN 3:1 APPLY 128 POUNDS OF KENTUCKY 31 FESCUE, 2 POUNDS OF RED TOP GRASS, AND 20 POUNDS OF SEASONAL NURSE CROP. FOR SOUTHERN SLOPE (BEYOND BLDG 15) APPLY 108 POUNDS OF KENTUCKY 31 FESCUE, 2 POUNDS OF RED TOP GRASS, 20 POUNDS OF SEASONAL NURSE CROP, AND 20 POUNDS OF CROWNVETCH. THE SEASONAL NURSE CROP USED IS BASED ON THE FOLLOWING SEEDING DATES: FROM FEBRUARY 16 THROUGH APRIL USE ANNUAL RYE; FROM MAY 1 THROUGH AUGUST 15 USE FOXTAIL MILLET; FROM AUGUST 16 THROUGH OCTOBER USE ANNUAL RYE; AND FROM NOVEMBER THROUGH FEBRUARY 15 USE WINTER RYE. ALL PERMANENT SEEDING SHALL BE FERTILIZED, LIMED AND AT THE FOLLOWING RATES: FERTILIZER 10-20-10 AT A RATE OF 1000 POUND PER ACRE; LIME OF AGRICULTURAL GRADE LIMESTONE AT A RATE OF 2 TONS PER ACRE; AND STRAW MULCH AT A RATE OF 1-1/2 TONS PER ACRE. BEFORE SEEDING, 4 INCHES OF TOP SOIL SHALL BE SPREAD IN AREAS TO BE SEEDED. APPLY FERTILIZER AND LIME UNIFORMLY AND MIX WELL INTO TOP 4 INCHES OF SEED BED. PREPARE SOIL FOR PERMANENT SEEDING BY TILLAGE OF TOPSOIL IN PLACE TO LOOSEN THOROUGHLY AND BREAK UP ALL CLODS TO A DEPTH OF 6 INCHES. REMOVE ALL STUMPS AND ROOTS, COARSE VEGETATION, STONES LARGER THAN 1-1/2 INCHES AND ALL CONSTRUCTION DEBRIS. SOIL SHALL BE WORKED BY SUITABLE AGRICULTURAL EQUIPMENT TO A DEPTH OF NOT LESS THAN 4 INCHES. SURFACE SHALL BE UNIFORM, SMOOTH AND DRAINABLE. A FIRM AND COMPACT SEED BED IS REQUIRED. 4. MULCHING (MU), 3.35: ALL TEMPORARY AND PERMANENT SEEDING SHALL BE STRAW MULCHED. C. MINIMUM STANDARDS MS -1. STABILIZATION OF DENUDED AREAS: PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN 7 DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZA11ON SHALL BE APPLIED WITHIN 7 DAYS TO DENUDED AREAS THAT MAY NOT BE AT FINAL GRADE, BUT WILL REMAIN DORMANT OR UNDISTURBED FOR LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR. MS -2. STABIUZATTON OF SOIL STOCKPILES: DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE. MS -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 ACHIEVED THAT, IN THE OPINION OF THE E&S INSPECTOR, IS UNIFORM AND MATURE ENOUGH TO SURVIVE AND INHIBIT EROSION. MS -4. TIMING AND STABILIZATION OF SILT TRAPPING MEASURES: SEDIMENT BASINS AND TRAPS, STORM INLET PROTECTION, SILT FENCING, AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST STEP IN ANY LAND DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE. MS -5. STABIUZA11ON OF EARTHEN STRUCTURES: STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER INSTALLATION MS -6. SEDIMENT BASINS AND TRAPS: SEDIMENT TRAPS AND BASINS SHALL BE CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE SERVED. A. THE MINIMUM CAPACITY OF A SEDIMENT TRAP SHALL BE 134 -CUBIC YARDS PER ACRE OF DRAINAGE AREA, AND SHALL CONTROL A DRAINAGE AREA OF LESS THAN 3 -ACRES. B. THE MINIMUM CAPACITY OF A SEDIMENT BASIN SHALL BE 134 -CUBIC YARDS PER ACRE OF DRAINAGE AREA, AND SHALL CONTROL A DRAINAGE AREA OF 3 -ACRES OR GREATER. MS -7. CUT AND FILL SLOPES: CUT AND FILL SLOPES SHALL BE CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABIUZAT10N SHALL BE PROVIDED WITH ADDITIONAL SLOPE STABILIZING MEASURES UN11L THE PROBLEM IS CORRECTED. MS -8. CONCENTRATED RUNOFF 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. MS -9. WATER SEEPAGE FR(M,i A SLOPE FACE: WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED. MS -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. MS -11. STABILIZATION OF OUTLETS: BEFORE NEWLY CONSTRUCTED STORM WATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE CHANNEL AND RECEIVING CHANNEL. MS -12. WORK IN LIVE WATERCOURSES: N/A WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL. BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NONERODIBLE MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE STRUCTURES IF ARMORED BY NONERODIBLE COVER MATERIALS. MS -13. CROSSING A LIVE WATERCOURSE: WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX MONTH PERIOD, A TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIALS SHALL BE PROVIDED. MS -14. APPLICABLE REGULATIONS: ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE MET. MS -15. STABILIZATION OF BED AND BANKS: N/A THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED. MS -16. UNDERGROUND UTILITIES: UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS, IN ADDITION TO OTHER APPLICABLE CRITERIA: A. NO MORE THAN 500 -LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME. B. WHERE CONSISTENT WITH SAFETY AND SPACE CONSIDERATIONS, EXCAVATED MATERIAL IS TO BE PLACED ON THE UPHILL SIDE OF TRENCHES, EXCEPT FOR ANY DIVERSION DITCHES. C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH AN APPROVED SEDIMENT TRAPPING DEVICE, OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFFSITE PROPERTY. D. TRENCH BACKFILL MATERIAL SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND PROMOTE STABILIZATION. E. RESTABILIZA11ON SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS. F. ALL APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH AT ALL TIMES MS -17. CONSTRUCTION ACCESS ROUTES: WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR PUBLIC ROAD, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT DISPOSAL AREA. STREET WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL DEVELOPMENT LOTS AS WELL AS TO LARGER LAND-DISTURBINIG ACTIVITIES. MS -18. TEMPORARY E&S CONTROL MEASURE REMOVAL ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALLS BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABIUZA11ON OR AFTER TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWSE AUTHORIZED BY THE LOCAL E&S AUTHORITY. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION. MS -19. 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 STORM WATER RUNOFF FOR THE STATED FREQUENCY STORM OF 24-HOUR DURATION. D. MAINTENANCE: ALL EROSION AND SEDIMENT CONTROL STRUCTURES AND SYSTEMS SHALL BE MAINTAINED, INSPECTED, AND REPAIRED AS NEEDED TO INSURE CONTINUED PERFORMANCE OF THEIR INTENDED FUNCTION. ALL EROSION AND SEDIMENT CONTROL MEASURES SHALL BE CHECKED AT THE END OF EACH DAY AND AFTER EVERY RAINFALL EVENT. 1. DAMAGE TO EROSION CONTROL MEASURES CAUSED BY CONSTRUCTION TRAFFIC OR OTHER ACTIVITY SHALL BE REPAIRED BEFORE THE END OF EACH WORKING DAY. 2. MAINTAIN ALL SEEDED AREAS UNTIL A UNIFORM STAND IS ACCEPTED. 3. SPEC. 3.01 4. SPEC. 3.02 PROVIDE FOR EQUIPMENT WASHING AS NEEDED TO PREVENT THE TRANSPORT OF SOIL ONTO EXISTING ASPHALT ROADWAYS. ANY SEDIMENT ON THE PAVEMENT SHALL BE REMOVED IMMEDIATELY. 5. SPEC. 3.03 MAY REQUIRE PERIODIC TOP DRESSING AS NECESSARY.. 6. SPEC. 3.05 SILT FENCE BARRIERS WILL BE CHECKED DAILY FOR UNDERMINING OR DETERIORATION OF THE FABRIC. SEDIMENT SHALL BE REMOVED WHEN THE LEVEL REACHES HALF WAY TO THE TOL OF THE BARRIER. 7. SPEC. 3.08 SHALL BE INSPECTED AFTER EACH RAIN AND REPAIRS MADE AS NEEDED. 8. SPEC. 3.09 THE MEASURE SHALL BE INSPECTED AFTER EVERY STORM AND REPAIRS MADE TO THE DIKE, FLOW CHANNEL, OUTLET OR SEDIMENT TRAPPING FACILITY, AS NECESSARY. ONCE EVERY TWO WEEKS, WHETHER A STORM EVENT HAS OCCURRED OR NOT, THE MEASURE SHALL BE INSPECTED AND REPAIRS MADE IF NEEDED. DAMAGES CAUSED BY CONSTRUCTION TRAFFIC OR OTHER ACTIVITY MUST BE REPAIRED BEFORE THE END OF EACH WORKING DAY. 9. (SPEC. 3.10) INSPECT AT THE END OF EACH WORK DAY, REPAIR AS NECESSARY. CONSTRUCTION TRAFFIC SHALL NOT BE PERMITTED TO CROSS THE DIVERSION. 10. SPEC. 3.11) INSPECT AFTER EACH RAINFALL, REPAIR AS NECESSARY. 11. SPEC. 3.13/3.14) SEDIMENT SHALL BE REMOVED AND THE BASIN TRAP RESTORED TO ITS ORIGINAL DIMENSIONS WHEN THE SEDIMENT HAS ACCUMULATED TO ONE HALF THE DESIGN VOLUME OF THE WET STORAGE. SEDIMENT REMOVAL FROM THE BASIN SHALL BE DEPOSITED IN A SUITABLE AREA AND IN SUCH A MANNER THAT IT WILL NOT ERODE AND CAUSE SEDIMENTATION PROBLEMS. FILTER STONE SHALL BE REGULARLY CHECKED" TO ENSURE THAT FILTRATION PERFORMANCE IS MAINTAINED. STONE CHOKED WITH SEDIMENT SHALL BE REMOVED AND CLEANED OR REPLACED. 12. (SPEC. 3.15) INSPECT AFTER EACH STORM, REPAIR AS NECESSARY. AVOID THE PLACEMENT OF ANY MATERIAL ON AND PREVENT CONSTRUCTION TRAFFIC ACROSS THE SLOPE DRAIN. 13. (SPEC. 3.17) DURING INITIAL ESTABLISHMENT, GRASS SHOULD BE REPAIRED IMMEDIATELY IN NEEDED. PERIODIC CHECKS ON THE GRASS WITHSTANDING THE FLOW VELOCITIES ARE NECESSARY. 14. SPEC. 3.18 CHECK PERIODICALLY, REPAIR AS NEEDED. 15. SPEC. 3.19 CHECK PERIODICALLY, REPAIR AS NEEDED. 16. SPEC. 3.21 CHECK PERIODICALLY, REPAIR AS NEEDED. 17. SPEC. 3.24 SHALL BE INSPECTED AFTER EVERY RAINFALL AND AT LEAST ONCE A WEEK, WHETHER IT HAS RAINED OR NOT, AND ALL DAMAGES REPAIRED IMMEDIATELY. 18. (SPEC. 3.31 & 3.32) AREAS WHICH FAIL TO ESTABLISH VEGETATIVE COVER ADEQUATE TO PREVENT RILL EROSION WILL BE RESEEDED AS SOON AS SUCH AREAS ARE IDENTIFIED. 19. (SPEC. 3.36) ALL SOIL STABILIZATION BLANKETS AND MATTING SHALL BE INSPECTED AFTER RAINSTORMS TO CHECK FOR EROSION AND UNDERMINING. IF WASHOUT OR BREAKAGE OCCURS, REINSTALL THE MATERIAL AFTER REPAIRING DAMAGE TO THE SLOPE OR DITCH. 20. DUST CONTROL (DC), 3.39: PROVIDE DUST CONTROL IN AREAS SUBJECT TO SURFACE AND AIR MOVEMENT OF DUST WHERE ON-SITE AND OFF-SITE DAMAGE IS LIKELY TO OCCUR IF PREVENTIVE MEASURES ARE NOT TAKEN. 1 ADDRESS COUNTY/VDOT COMMENTS JJK 02/08/08 LAWN (WITHIN TURF -TYPE TALL FESCUE 200-250 LBS LOT AREA) 2 REVISED TYPICAL SECTION FONTANA DRIVE JJK 03/13/08 SEASONAL NURSE CROP 20 LBS LOW MAINTENANCE USE GROUND COVER PLANTINGS SLOPES 2:1 OR STEEPER SSB. AGSM W�eSA �C�M�dE�T`9-V� VVV'1 V -._/Q4/)}9 TABLE 3.37-C OF THE VESCH. SEEDING DATE SEASONAL NURSE CROP FEB. 16 THRU APRIL ANNUAL RYE MAY 1 THRU AUG 15 FOXTAIL MILLET 4 ADD PHASE LINE MFM 12/27/12 N0. REVISION BY DATE NO. REVISION BY DATE v DAVI NSEN 9 L' o. 4 yt.SIONAL X. SEQUENCE OF CONSTRUCTION 1. SCHEDULE AND ATTEND PRE -CONSTRUCTION CONFERENCE. 2. VERIFY ALL EXISTING PERIMETER CONTROLS AND TEMPORARY PAVED CONSTRUCTION ENTRANCE FROM WPO 2007-00054 ARE IN PLACE AND IN GOOD WORKING ORDER. 3. MAINTAIN EXISTING CONTROLS CONSTRUCTED WITH WPO 2007-00054 THAT ARE WITHIN THE LIMITS OF CLEARING AND GRADING ASSOCIATED WITH THIS PROJECT. 4. CONSTRUCT TEMPORARY SEDIMENT BASINS, SEDIMENT TRAPS, WIRE SILT FENCE, STORM CONVEYANCE CHANNELS, PERIMETER DIVERSION DIKES, DIVERSIONS, TEMPORARY STREAM CROSSINGS, LEVEL SPREADERS, RIGHT OF WAY DIVERSIONS AND PERIMETER SILT FENCE AS SHOWN ON PLAN PRIOR TO ROUGH GRADING. INSTALL STORM DRAIN STRUCTURES; INSTALL INLET AND OUTLET PROTECTION AS SHOWN. 5. CLEAR AND GRUB, STRIP TOPSOIL AND STOCKPILE WITHIN THE LIMITS OF CLEARING AND GRADING. 6. INSTALL INLET AND OUTLET CONTROLS AS THE CLOSED CONDUIT STORM DRAIN SYSTEM IS INSTALLED. INSTALL WATER AND SANITARY SEWER UTILITIES AND APPURTENANCES. 7. PERFORM GRADING TO BRING ALL AREAS TO GRADES SHOWN. INSTALL TEMPORARY FILL DIVERSIONS AND TEMPORARY SLOPE DRAINS AND MAINTAIN AS NECESSARY. 8. CONSTRUCT ROAD BED, PAVEMENTS, SIDEWALKS AND RESIDENTIAL UNITS. 9. PROVIDE TEMPORARY SEEDING AND OTHER EROSION CONTROL DEVICES TO MINIMIZE TRANSPORT OF SEDIMENT. 10. PERFORM PERMANENT SEEDING, STRAW MULCHING, AND STABILIZE ALL DISTURBED AREAS. APPLY DOUBLE SHREDDED HARDWOOD MULCH WHERE DENOTED. 11. NO E&S FACILITIES ARE TO BE REMOVED WITHOUT PERMISSION FROM THE COUNTY INSPECTOR. 12. PERIMETER EROSION CONTROL DEVICES MUST REMAIN IN PLACE UNTIL INTERIOR CONTROL HAS BEEN SUCCESSFULLY IMPLEMENTED AND/OR THE APPLICABLE DRAINAGE AREA HAS REACHED FINAL GRADE AND BEEN FULLY STABILIZED. REMOVE TEMPORARY EROSION CONTROL MEASURES AND STABILIZE AFFECTED AREAS. 13. SEDIMENT BASINS SHALL BE CONVERTED TO PERMANENT STORMWATER MANAGEMENT AFTER THE SUBDIVISION CONSTRUCTION HAS BEEN COMPLETED AND ALL AREAS WITHIN THE DRAINAGE AREAS HAVE BEEN FULLY STABILIZED. 14. CLOSE OUT THE PROJECT. XI. ALBEMARLE COUNTY GENERAL CONSTRUCTION NOTES 1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION. 2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDINGTO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02--00 EROSION AND SEDIMENT CONTROL REGULATIONS. 3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING. 4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES. 5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO,, OFF-SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY. 6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY. 7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED. 8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE. 9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY. 1 D. ALL FILL MATERIALS TO BE TAKEN FROMI AN APPROVED, DESIGNATED BORROW AREA. 11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTSi', STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS. 12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28. 13. ALL INERT MATERIALS SHALL BE TRANSPORTED 1N COMPLIANCE WITH SECTION 13 301 OF THE CODE OF ALBEMARLE. 14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:OOAM TO 9:OOPM. 15. BORROW, FILL OR WASTE ACTIVITY SHALLL BE CONDUCTED IN A SAFE MANNER THAT MAINTAINS LATERAL SUPPORT, OR ORDER TO MINIMIZE ANY HAZARD TO) PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC STREET BIECAUSE 0 SLIDES, SINKING, OR COLLAPSE. 16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT STORMWATER MANAGEMENT FACILITIES WHERE APPLICABI_" ALL EROSION CONTROL MEASURES REQUIRED BY THIS PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUiL_DING OR OTHER PORTION OF THE PROPERTY. 17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT 8OLBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPEC71=�', 18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER; PERMANENT SEEDING, AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED A'T 901_1331000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL. FERTILIZER SHALL BE APPLIED AT 1000L-BS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE APPLIED AT 1 BOLBS/IACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-590 PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE COUNTY EROSION CONTROL INSPECTOR. 19. MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE OR CLOGGING TO STRUCTURAL MEASURES IS TO BE REPAIR IMMEDIATELY. SILT TRAPS ARE TO BE CLEANED WHEN 50% OF THE WET STORAGE VOLUME IS FILLED WITH SEDIMENT. ALL SEEDED AREAS ARE TO BE RESEEDED WHEN NECESSARY TO ACHIEVE A GOOD STAND OF GRASS. SILT FENCE AND DIVERSION DIKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED IMMEDIATELY. 20. ALL TEMPORARY EROSION AND SEDIMENTF CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION, WHEN MEASURES AFRE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE COUNTY EROSION CONTROL INSPECTOR. XII. PROPERTY OWNER RESPONSIBLE FOR MAINTENANCE IMPLEMENTATION PROPERTY OWNER: PANTOPS - HYLAND RIDGE, L.L.C. C/O SOUTHERN DEVELOPMENT 170 SOUTH PANTOPS DRIVE CHARLOTTESVILLE, VA 22911 (434) 254-0894 ATTN: CHARLES ARMSTRONG AMENDMENT PREPARED BY 0C 5 N. °`5 h Dominion Engineering) •p 172 South Pantops Mrive 0Charlottesnlle, VA 22°91 1 0�' 434.979.51211 (p) rye 434,979. 166 11 (f) I 9�e S domnoneng.t,com H MICHAEF, MYERS Lic. o. 33028 ONAL ._.J DATE 12-27-2012 NO CHANGES HAVE BEEN MADE TO THHIS PLAN OTHER THAN THOSE HIGHLIGHTED. cL S r.8Box 4119 1402 Greenbrier , VA 24502 Chartottesvilte,, 229 Phone: 434.582.6175 Phone: 434.984.2700 www.wwassociates.net DESIGNED BY. JJK )RA WN BY. To, JFR 'EVIEWED BY: DJM WWA ,NUMBER: 206030.10 h (1 `t �; It �r' t.i C: v'(_,`I,'-...,. - .tee• -.•1..::, } „witt L: ;Ej;c LI L,,,4., i I I lil a ! _ TEMPORARY & PERMANENT SEEDING SCHEDH! E LAWN TYPE SEEDING RATE PER ACRE HIGH MAINTENANCE KENTUCKY 31 OR LAWN (WITHIN TURF -TYPE TALL FESCUE 200-250 LBS LOT AREA) GENERAL SLOPES KENTUCKY 31 FESCUE 128 LBS 3:1 OR LESS RED TOP GRASS 2 LBS SEASONAL NURSE CROP 20 LBS LOW MAINTENANCE USE GROUND COVER PLANTINGS SLOPES 2:1 OR STEEPER AND/OR VINES IN ACCORDANCE WITH TABLE 3.37-C OF THE VESCH. SEEDING DATE SEASONAL NURSE CROP FEB. 16 THRU APRIL ANNUAL RYE MAY 1 THRU AUG 15 FOXTAIL MILLET AUG 16 THRU OCT ANNUAL RYE NOV THRU FEB 15 WINTER RYE ALL PERMANENT SEEDING SHALL BE FERTILIZED, LIMED AND MULCHED AT THE FOLLOWING RATES: FERTILIZER 10-20-10 AT A RATE OF 1,000 POUNDS PER ACRE; LIME OF AGRICULTURAL GRADE LIMESONE AT A RATE OF 2 TONS PER ACRE; AND STRAW MULCH AT A RATE OF 1-1/2 TONS PER ACRE DURING THE SPRING AND FALL AND 2 TONS PER ACRE IN THE WINTER AND SUMMER. SLOPES LABELED AS 2:1 WITH VDOT ST'D EC -2 LINING MAY HAVE AN ANNUAL RYE HYDROSEED W/ TACKIFIER PLANTED ON THE SLOPES AT PERMANENT SEEDING RATES IN LIEU OF USING THE EC -2 LINER TO ALLOW FOR EROSION PROTECTION PRIOR TO GROUND COVER PLANTING. PROJECT: H YLAND RIDGE (AKA LAKE RIDGE) FINAL SUBDIVISION PLANS TITLE: EROSION & SEDIMENT CONTROL NARRATIVE FILE NAME: SCALE:N fA DATE: C-25-ES-NAR.dwg V. N/A 12-05-07 REVISION NUMBER: 3 DRAWING NUMBER: G-25 SHEET NUM13ER: 25 Of 57 ccl 0 I r� �I Cfl Cr' 00 w e- Ui s 0 U TEMPORARY SEDIMENT TRAP 1' VARIABLE* ORIGINAL VARIABLE /GROUND ELEV. 1 D' \ 67 CU. YD./ACRE * r, VARIABLE N � 67 CXCAVATED}U. YD./ACRE 4' MAX. (E FILTER CLOTHORIGINAL GROUND ELEV. ** *SEE PLATE 3.13-1 COARSE AGGREGATE CLASS I RIPRAP CROSS SECTION OF OUTLET CLASS I RIPRAP LENGTH (IN FEET) _ 6 X DRAINAGE AREA (IN AC.) DIVERSION DIKE xz COARSE AGGREGATE / EXCAVATED , FILTER CLOTH AREA .-____�'� **COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5 OUTLET (PERSPECTIVE VIEW) SOURCE: VA. DSWC PLATE. 3.13-2 DIVERSIONS 10% SETTLEMENT 0.3' FREE BOARD u - DESIGN FLOW DEPTH 11 =11111 TYPICAL PARABOLIC DIVERSION 10% SETTLEMENT 0.3' FREE BOARD DESIGN FLOW DEPTH TYPICAL TRAPEZOIDAL DIVERSION 10% SETTLEMENT 0.3' FREE BOARD rrI DESIGN FLOW I _ sumk TYPICAL VE -SHAPED DIVERSION �7 Dd -ce: Va. DSWC FILL SLOPE SILT FENCE CULVERT INLE T PROTECTION ENDWALL DISTANCE IS 6' MINIMUM IF FLOW IS TOWARD EMBANKMENT FLOW OPTIONAL STONE COMBINATION 1.5' FLOW *VDOT #3, #357, #5, #56 OR #57 COARSE AGGREGATE TO REPLACE SILT FENCE W " HORSESHOE WHEN HIGH VELOCITY OF FLOW IS EXPECTED 2.5 CLASS I RIPRAP CIP SOURCE: ADAPTED from VDOT Standard Sheets and Va. DSWC rLA1e. o.UO-I PIPE OUTLET CONDITIONS A A 'IPE OUTLET TO FLAT ,REA WITH NO DEFINED 'HANNEL L a o% IIII-IIII d SECTION A -A FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER ado (MIN.) PIPE OUTLET TO WELL DEFINED CHANNEL PLAN VIEW L a 0 % d SECTION A -A FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER INOTES: L 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. 0 3. d = 1.5 TIMES THE MAXIMUM STONE DIAMETER, BUT NOT LESS THAN 6 INCHES. Plate 3.12-1 Source: Va. DZjWU TEMPORARY FILL DIVERSION EARTHEN RIDGE SOURCE: VA. DSWC ZCE: VA. DSWC PLATE. 3.14-2 CONSTRUCTION OF A SILT FENCE (WITH WIRE S UPPOR T) 1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS, TRENCH UPSLOPE ALONG THE LINE OF POSTS. r I FLOW IIIAII 3. ATTACH THE FILTER FABRIC TO THE WIRE 4. BACKFILL AND COMPACT THE FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATED SOIL ,,;i �t�1�1 rJ� '•Q� �. nJ Hill-_ "111111 ■ I 11 SF CORRUGATED METAL EXTENSION COLLAR WATERPROOF SEAL k.1.nu.2n�m"asww EARTHEN DIKE PROVIDE INLET (COMPACTED) PROTECTION 7 1 SECTION VIEW NOTE: SEDIMENT MAY BE CONTROLLED AT OUTLET IF UPLAND PONDING WILL CREATE PROBLEMS EARTHEN DIKE (COMPACTED) 3:1 1 SECTION A - A URGE: VA. DSWC y D+6" D 18 A . W .. ADDRESS COUNTY/VDOT COMMENTS JJK 02/08/08 H HO W CONCRETE BLOCK 1.5 0.5 2.0 LTH 011 '� --. F MICHAEL 7 �MYERS Li No, 33028 ���� // � ��� � ��" � � ti� �SIONA� ��``S � � RUNOFF WATER WITH 2.0 1,0 2.0 SEDIMENT 2 2.5 1.5 2.5 3.0 2.0 2.5 �. 0.A{fC� sTS✓v-. ti-�-�-� ti 3.5 2.5 3.0 H O H 4.0 3.0 3.0 DRAWING NUMBER: C-26 4 4.5 3.5 4.0 5.0 4.0 4.5 PLATE 3.15-1 SOURCE: VA. DSWC THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE AN OVERFLOW CAPABILITY IS NECESSARY TO PREVENT EXCESSIVE PONDING IN FRONT OF THE STRUCTURE. * GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE AGGREGATE CONTRACTOR TO ENSURE RUNOFF 1S DIRECTED TO ALL INLETS OPN GRADE. Plate 3.18-1 SOURCE: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control, PLATE. 3.05-1 SOURCE: VA. DSWC Sherwood & Wyant TEMPORARY DIVERSION DIKE AMENDMENT PREPARED BY C � C:mmnact.ed Soil 5 Dominion Engineering PLA'I"E 3.10-1 SOURCE: VA. DSWC 4.5' min. -� DD PLATE 3.09-1 172 South Pantop5 Drive Charlottesville, VA 2291 1 434.979.8121 (p) 434.979.1651 (f) domirnoneng.com DATE 12-27-2012 NO CHANGES HAVE BEEN MADE TO THIS PLAN OTHER THAN THOSE HIGHLIGHTED. TYPICAL WA TER WA Y CROSS-SECTIONS COMPACTED SOIL 111-1111 011 iIIII III11- -1111111 I -IIII 1 - TYPICAL CONCRETE LINED DITCH TYPICAL GRASS LINED DITCH TYPICAL VEE CROSS-SECTIONS T PARABOLIC WATERWAY CROSS-SECTION 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) TYPICAL CONCRETE CHANNEL EXPANSION JOINT A (90' SPACING) a o g p` °00 >o.'AR3SpP `�4 trtr° .<Og° d43' 16n ° Cf+ NOT TO SCALE #4-18" DOWEL A LOCATED AT JOINTS 6X6 WELDED WIRE FABRIC °aoq AS REQUIRED o° 0�tr�oo�eD ��o D oo�Qo�oo4ao` `o�bo�5o;ao 000 °' oOo 3" DIA. WEEP o °o HOLE, 8' o.c. v0000.oeo:e000,gobaoS°=000aooe�•�o°. SECTION A -A TRAPEZOIDAL WATERWAY CROSS-SECTIONS IPLATE 3.07-8 SOURCE: VA. DSWC CLOTH) PLATE 3.17 - ORIGINAL GROUND ELEV. ST PLATE. 3.13-1 1 ADDRESS COUNTY/VDOT COMMENTS JJK 02/08/08 WIRE SCREEN CONCRETE BLOCK GRAVEL FILTER LTH 011 '� --. F MICHAEL 7 �MYERS Li No, 33028 ���� // � ��� � ��" � � ti� �SIONA� ��``S � � RUNOFF WATER WITH OVERFLOW FILTERED WATER SEDIMENT 2 REVISED TYPICAL SECTION FONTANA DRIVE JJK 03/13/08 �. 0.A{fC� sTS✓v-. ti-�-�-� ti SIC 04¢D�� IF P. oRawN BY: To, JFR DRAWING NUMBER: C-26 4 SEDIMENT MFM 12/27/12 WIRE SCREEN TI TL E. EROSION & SEDIMENT CONTROL DETAILS 2" X 4" WOOD STUD CURB INLET SPECIAL APPLICATION REVIEWED BY. DJM THIS METHOD OF INLET PROTECTION IS APPLICABLE AT CURB INLETS WHERE AN OVERFLOW CAPABILITY IS NECESSARY TO PREVENT EXCESSIVE PONDING IN FRONT OF THE STRUCTURE. * GRAVEL SHALL BE VDOT #3, #357 OR #5 COARSE AGGREGATE CONTRACTOR TO ENSURE RUNOFF 1S DIRECTED TO ALL INLETS OPN GRADE. Plate 3.18-1 SOURCE: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control, PLATE. 3.05-1 SOURCE: VA. DSWC Sherwood & Wyant TEMPORARY DIVERSION DIKE AMENDMENT PREPARED BY C � C:mmnact.ed Soil 5 Dominion Engineering PLA'I"E 3.10-1 SOURCE: VA. DSWC 4.5' min. -� DD PLATE 3.09-1 172 South Pantop5 Drive Charlottesville, VA 2291 1 434.979.8121 (p) 434.979.1651 (f) domirnoneng.com DATE 12-27-2012 NO CHANGES HAVE BEEN MADE TO THIS PLAN OTHER THAN THOSE HIGHLIGHTED. TYPICAL WA TER WA Y CROSS-SECTIONS COMPACTED SOIL 111-1111 011 iIIII III11- -1111111 I -IIII 1 - TYPICAL CONCRETE LINED DITCH TYPICAL GRASS LINED DITCH TYPICAL VEE CROSS-SECTIONS T PARABOLIC WATERWAY CROSS-SECTION 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) TYPICAL CONCRETE CHANNEL EXPANSION JOINT A (90' SPACING) a o g p` °00 >o.'AR3SpP `�4 trtr° .<Og° d43' 16n ° Cf+ NOT TO SCALE #4-18" DOWEL A LOCATED AT JOINTS 6X6 WELDED WIRE FABRIC °aoq AS REQUIRED o° 0�tr�oo�eD ��o D oo�Qo�oo4ao` `o�bo�5o;ao 000 °' oOo 3" DIA. WEEP o °o HOLE, 8' o.c. v0000.oeo:e000,gobaoS°=000aooe�•�o°. SECTION A -A TRAPEZOIDAL WATERWAY CROSS-SECTIONS IPLATE 3.07-8 SOURCE: VA. DSWC CLOTH) PLATE 3.17 - ORIGINAL GROUND ELEV. ST PLATE. 3.13-1 1 ADDRESS COUNTY/VDOT COMMENTS JJK 02/08/08 ®� TH o 00 t �, DAVI NSEN L o. 4 j • �'� ,;,ti SI�N.A.I., ^�� �� LTH 011 '� --. F MICHAEL 7 �MYERS Li No, 33028 ���� // � ��� � ��" � � ti� �SIONA� ��``S � � = ENGIN s oxs ANNERS Box c1 2Greenbrier S ehbur$,vnz4soz cc>L�I°n��He,vAsz9 Phone: 434,582.6175 Phone: 434,984.2704 www.wwassociates.nei DESIGNED BY JJK PROJECT: H YLAND RIDGE (AKA LAKE RIDGE l FINAL SUBDIVISION PLANS REVISION NUMBER: 3 2 REVISED TYPICAL SECTION FONTANA DRIVE JJK 03/13/08 �. 0.A{fC� sTS✓v-. ti-�-�-� ti SIC 04¢D�� oRawN BY: To, JFR DRAWING NUMBER: C-26 4 ADD PHASE LINE MFM 12/27/12 TI TL E. EROSION & SEDIMENT CONTROL DETAILS REVIEWED BY. DJM SHEET NUMBER: � � � � � � WWA NUMBER: 206030.10 FILE NAME: C -26 -ES -D TLS. d wg SCALE: V: N/A DATE: � 2- 05 - 0 7 NO. REVISION BY DATE N0. 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I � /-�, � . I z - ,:�,, ,;� --i ; I "I i , ,, I � - , -� -a. 30 AC/ ,� A�- , , I " - - - - � ,,, -:::�, �.,-! I -- ? 'I,' ') I -, \- -IN , I � lf� - - -- -- - � Zb-\ "-, �\ � ---4�� �. -, I � - - I k I\ , / / 11 / / / . � \ '' I \--,L, ,%, ,%� Al -%� %L �Ik -106, %, 4L �L 'L *- I \ \ " , - ,\A-r����-,'-`�-� -, 7��"- - �l � ,` // / �� -- 1111111���������������� � I - - F, 1 ADDED TEMPORARY FILL DIVERSIONS, SLOPE DRAINS & SCC JJK � ��= � = 2 REVISED TYPICAL SECTION FONTANA DRIVE JJ K 937-M7 - RW&SA COMMENTS /--"REPI&.A6E&-SB)�[M�EN-T-TRAP--4iKH--,SI-LT-��---�,---�,---,--,---,,---�,----�---,--�,--aJ-K,-,���-/G&- — k � 5 ADD PHASE LINE MFM 12/27/12 , ,,�--,-------,---, --11----,-� — I NO. I REVISION I BY I DA TE I NO. I REVISION I BY I DATE _j . , V --A DA SEN �Pl L* 6. 4 - �&F!ONAL S't� I- � . . .......... .... .. - I �— I , �, , H P 11 � . DESIGNED BY. PROJECT. �, �, ,e' = JJK HYLAND RIDGE I ' ENG (AKA LAKE RIDGE) 4 V I �i DRAWN BY. I I I 0 "I'll I- s ORS FINAL SUBDIVISION PLANS DRAWING NUMBER: "' , �- Ta, JFR P /P, -NERS NUCHAA-E s AN � T/ TLE: 116 Lic. 'o. 33028 ) REVIEWED BY.- EROSION AND SEDIMENT CONTROL PLAN C-28 'zi� , i ci s DJM o 11 � 2,' -/�- (n1,,-!-- 4�1 Box 4119 1402 Gre der WWA NUMBER: FILE NAME: NU I- '11� hburg, VA 24502 Charlot1mgvdie, ITA 229 SCALE. DA TE: V, Phone: 434.582.6175 Phone: 434.984.2700 H: 1"=50' � ONAL www.Vrxwsociatcs.nc� &S.dwg V. N 1A 12-05-07 28 of57 OUTLET PROTECTION DESIGN ADDRESS COUNTY/VDOT COMMENTS JJK 02/08/08 (AKA LAKE RIDGE) 3 DRAWN BY' 2 Channel JJK 03/13/08 * apron assumed to be on level ground Outlet - -Dv r= ffl & ,,-- --,---„-�,.----„ Hydraulics SHEET NUMBER: Incremental 4 c A MFM 12/27/12 F 206030.10 Q a> ": 1"=50' V: N/A m x Allowable 2 Year Maximum a) 0- - C O ti N o N Tc = Slope Geometry Liner Q m 0- NO - U . 10 -Year '� REVISION p Segment ID Incremental c Drainage � (min) I2 (in/hr) Q2 (cfs) (ftift) � Material V2 x R2 n Velocity Velocity 110 (in/hr) Q10 (cfs) Depth (ft) Channel Remarks C I- O z Area (Ac.) a Imo- (fps) (fps) > remarks D-10 2 Depth (ft) 31.10 0.00 11.7 Incremental Accumulated D-42 3 64.00 b � z2 10.9 21.0 Class Al D-99 3 117.40 0.00 SCC1 0.45 27.60 12.42 12.42 15.00 3.40 42.23 0.042 0.0 2.0 3.0 EC -3 4.41 0.050 7.00 5.36 4.50 55.89 1.97 2.00 Velocity OK Depth OK DD2 0.30 1.10 0.33 0.33 5.00 5.20 1.72 0.050 0.0 3.0 3.0 EC -2 0.73 0.050 4.00 2.74 6.70 2.21 0,61 1.33 Velocity OK Depth OK DD3 0.30 1.50 0.45 0.45 5.00 5.20 � 2.34 0.147 0.0 3.0 3.0 EC -3 A 1.08 0.050 7.00 4.44 5.60 2.52 0,53 1.33 Velocity OK Depth OK DD4 0.30 0.78 0.23 0.23 5.00 5.20 1.22 0.128 0.0 3.0 3.0 EC -2 0.54 0.050 4.00 3.22 6.70 1,57 0.39 '1.33 Velocity OK Depth OK DD5 0.30 0.38 0.11 0.11 5.00 5.20 0,59 0.182 0.0 3.0 3.0 EC -2 0.41 0.050 4.00 3.89 6.70 0.76 0.31 '1.33 Velocity OK Depth OK OUTLET PROTECTION DESIGN ADDRESS COUNTY/VDOT COMMENTS JJK 02/08/08 (AKA LAKE RIDGE) 3 DRAWN BY' 2 REVISED TYPICAL SECTION FONTANA DRIVE JJK 03/13/08 * apron assumed to be on level ground Outlet - -Dv r= ffl & ,,-- --,---„-�,.----„ Hydraulics SHEET NUMBER: Apron 4 ADD PHASE LINE MFM 12/27/12 F 206030.10 Q a> ": 1"=50' V: N/A m x % cn a) 0- - C O ti N o N = _ tz 3S "U Q m 0- NO - U . DATE '� REVISION p 4M-- O _0 C (6 � N � N ��vv 7, (� C I- O z 5 a Imo- > _j > remarks D-10 2 31.10 0.00 11.7 16.0 Class Al D-42 3 64.00 0.00 10.9 21.0 Class Al D-99 3 117.40 0.00 17.3 28.0 Class II D-78 2.5 40.80 0.00 12.2 18.0 Class Al SWM 1 Out 1.75 4.27 0.62 1.8 8.0 Class Al 1 - -_ -� ! / / '" Cin ` f / , \ __ - / �- -� 1 , '- v � � , i ii// - `,\\\\ \ --Cif//iJ/!=-~_-`--- � - �' 'f �'' �' / ~ \ \`� j Zl � 2 , \` \ ` � � _ = j' / / ' ' j ---\ "- \ \ �� � _✓�%, j j l }' = - "_ f ,, ,I r _ I I / r//� . ``. `�'' `\ � ~.,,, ,r- I r rl (/ J / / / / / '% * � `\ ~ `, ` '- _'_ \i/' ! t �-,�--.`= f % ' r' ',r O,. r / / b r \ \ _ / / / J / \ \ \ _g _ / j / r �s F r/ f /' / / ' , \\ ' �\ l y- --- - % 1 I j+ / " ( / ; / \,\ \' •� \\'\ .-- -\ ` �. !/ / !' 1 /' ,� �- � 6 -- ' ./ ' '__ t 4 / 1 f e\� _ 1 ; i 1 , , ! ; I \, \ ! 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GRAPHIC SCALE MUST BE USED - - / 1111 ' � r'" � -- -- - `- - __ - -_ - 1111 _ - __ _ _,-I -- _._ __ - �-'= �-, _ _ -- / f // �� ,% / '/ / / / SCALE: 1 = 50' _ / / - -- _ -_ -- / ---_ - __ f/ / f % ' - �. _ _1111 / y - \\ ' - - ~` f = / // / / r / / / .- -/ f . / J /{ / _ _ _ _/ _ / /` / j / / ,r / / ,r�r; 1111 y,\ „-„ y / `_""."' — _'. / ''^— _^ --- '� / �� �"' =' '�`` — __ — _ \ r /` ' �, / / / /r ,/ / Z lr� J _ -` ! f j % l / / ,_._-... / II E 0%1=0� rr / f < /� �' I- ---- - - -_ � - / � �� � -- ---- - _ ._ � ,4/ t � f i -/ / % r'6 // / / / / _- " ` / � / ,/ 111--1 % /_ _'' / \ __ / / ' -''Y s-- -- 'moi -- -- .\ y- - �_ ^• ) i O"' ,/ / / / /r / /' �' �/ / 11-11' 1111` // / j 50 r 9 / - -_ y--- - - - _ ' / / / j D 50 / f / � - / i '' � - y - `Y y - - - - �-- __ - - ._._ - - _ % r' f / / ` /�! !r l f / / / r'' _ I- - _.,._ _� f -s - /^ �' y, .-,%_ J- --"`' `--. _- . - j j / 1111 / /j 1111 z ,'! ,✓ - / 1 / / / / '� r --- `�- — — -- ___ ' __ / -. � - --- '- -- — ------ � _ _ — \� \ 1 r / ./ / , _ — I! .-,-.- _ 111`1_,. / -/ - -•"'• \ f ,f i / 1-1 1111 __ — -_.- --- i - `` / / - 11_ __-.- -_-_ — �'^- --., \, /' I / ,% / ,% y - 7 t /' - Ii t o l j j / ! — - - -- y - - / - "_/ '__-,-" / ' � f /.% / '`,- .-- '' , /-.e 1 ADDED TEMPORARY FILL DIVERSIONS AND SLOPE DRAINS JJK 02/08/08 2 REVISED TYPICAL SECTION FONTANA DRIVE JJK 03/13/08 ,_ ADDRE,SB, ACS"c---RT-&--v--„--,�-.., ADD PHASE LINE MFM 12/27/12 NO. F REVISION T13Y I DATE I N0. I REVISION I BY I DATE *+ TH p tiWN � �,L z x a F r - Q `�, �, l DAVI NSEN * MICHAEL�F.Ivi�ERS L' o. 4? Lic. No. 33028 wa �o�01 I ' ” � ��w rSj�NAL 1 �s� f�NAL 1 +#*a �" � J S ORS ANNERS CI Box 4119 1402 Greenbrier chburg, VA 24502 Charlottesville, VA 229 Phone: 434,582.6175 Phone: 434,984,2700 wwtv.wwassociates.net DESIGNED BY: NROJLCI: HYLAND RIDGE REVISION NUMBER: JJK (AKA LAKE RIDGE) 3 DRAWN BY FINAL SUBDIVISION PLANS Ta, JER DRAWING NUMBER: TI TLE: REVIEWED BY: EROSION AND SEDIMENT CONTROL PLAN c-31 DJM SHEET NUMBER: WWA NUMBER: FILE NAME: SCALE: DATE: 206030.10 C-31—E&S.dw H: 1•r-50) 12-05-07 31 of 57 9 V. N /A