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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 RIVANNA 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�9E,
RABUN CLAY LOAM-71B, RABUN CLAY LOAM-71C, RABUN CLAY LOAM-71D, RABUN CLAY LOAM-71E, RAYBUN CLAY-72B3, RABUN CLAY
-72C3, RAYBUN CLAY-720, STARR SILT LOAM-79B.
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-71B OCCURS ON 2 TO 7 PERCENT SLOPES. HYDROLOGIC SOIL GROUP B. THE K-FACTOR
RANGES FROM 0.28 TO 0.32.
RABUN CLAY LOAM-71C 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-72B3 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-72C3 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.
M. 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.
MI. STORMWATER MANAGEMENT CONSIDERATIONS
STORMWATER MANAGEMENT QUANTITY AND QUALITY CONTROLS FOR THIS SITE ARE TO BE PROVIDED IN SWM FACILITIES NO. 1, 2, AND 3.
VIII. 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. CONSTRUCTI, AS SHOWN ON DRAWINGS.
3. TEMP RARYOCONRSTRDUCTIONILIZATIONENTRANCE (CE) 3.02:SHA� TEMPORARY PROVIDEDCONSTRUC11ON ENTRANCES SHALL BE PAVED IN
ACCORDANCE WITH ALBEMARLE COUNTY REQUIREMENTS. A MINIMUM WATER TAP OF 1" MUST BE INSTALLED WIT: A 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 SETTL;iv
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 INDIICATED 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 SEDIMENT BASIN (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 (131M), 3.36: PROVIDE SOIL STABILIZATION BLANKETS AND MAT TAG 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 S;LT 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 WITH FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING GRADING. SEED SELECTION WILL
BE DEPENDENT ON THE TIME 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 POUNDC nENTUCKY 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.
1 ADDRESS COUNTY/VDOT COMMENTS
2 REVISED TYPICAL SECTION FONTANA DRIVE
Z ADDRESSED ACSA & RW&SA COMMENTS,
4 ADD PHASE LINE
NO.
REVISION
JJK 02/08/08
JJK 03/13/08
MFM�12/27/12
BYIDA TTE
NO.
REVISION
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 STABILIZATION 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. STABILIZATION OF SOIL STOCKPILES:
DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHAD_ 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. STABILIZATION 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 STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE
STABILIZING MEASURES UNTIL 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 FROM 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 U11UTIES:
UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS, IN ADDITION TO OTHER
APPLICABLE CRITERIA:
A. NO MORE THAN 500-UNEAR 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 10 MINIMIZE EROSION AND PROMOTE
STABILIZATION.
E. RESTABILIZATION 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. SEDIML,i 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 -DISTURBING ACTIV'TIES.
MS-18. TEMPORARY E&S CONTROL MEASURE REMOVAL:
ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALLS BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER TEMPORARY
MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LO''AL E&S AUTHORITY. TRAPPED SEDIMENT AND THE DISTURBED SOIL
AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE "ERMANENTLY 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 MAINT) INED,
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 TOP 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.
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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 COMMENCEMEN'r 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 C NTROL 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.
S. DURING DEWATERING OPERATIONS, WATER WILL BE P!I :"ED INTO AN APPROVED FILTERING DEVICE.
9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTRuL 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.
10. ALL FILL MATERIALS TO BE TAKEN FROM AN APPROV-^, DESIGNATED BORROW AREA.
11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPR 'eED WASTE AREA. EARTH FILL SHALL BE
INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS.
12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING
ORDINANCE SECTION 5.1.28.
13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13 301 OF THE CODE OF
ALBEMARLE.
14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO
THE HOURS OF 7:OOAM TO 9:OOPM.
15. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDU -`01 IN A SAFE MANNER THAT MAINTAINS LATERAL SUPPORT,
OR ORDER TO MINIMIZE ANY HAZARD TO PERSONS, i ,, :SIGAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS,
AND DAMAGE TO ANY PUBLIC STREET BECAUSE 0 SLIoL S, SINKING, OR COLLAPSE.
16. THE DEVELOPER SHALL RESERVE THE RIGHT TO INSTALL, MAINTAIN, REMOVE OR CONVERT TO PERMANENT
STORMWATER MANAGEMENT FACILITIES WHERE APPLI:_--. , ALL EROSION CONTROL MEASURES REQUIRED BY THIS
PLAN REGARDLESS OF THE SALE OF ANY LOT, UNIT, BUILDING OR OTHER PORTION OF THE PROPERTY.
17. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE,
AND IN THE MONTHS OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND
CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO
CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE' APPLIED AT 8OLBS/100SF. ALTERNATIVES ARE SUBJECT TO
APPROVED BY THE COUNTY EROSION CONTROL INSF'r _ ,'0FZ.
18. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING, AND MULCH. AGRICULTURAL
GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF SOIL.
FERTILIZER SHALL BE APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT
SEEDING SHALL BE APPLIED AT 180LBS/ACRE AND CONSIST OF 95% KENTUCKY 31 OR TALL FESCUE AND 0-5%
PERENNIAL RYEGRASS OR KENTUCKY BLUEGRASS. STRAW MULCH IS TO BE APPLIED AT 80LBS/1OOSF.
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 SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF FINAL
SITE STABILIZATION, WHEN MEASURES ARE 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 DR's %-
CHARLOTTESVILLE, VA 22911
(434) 254-0894
ATTN: CHARLES ARMSTRONG
AMENDMENT PREPARED BY
Dominion
Engineering
172 South Pantop5 Drive
Charlottesville, VA 2291 1
434.979.8121 (p)
434.979.1 G81 (0
dominioneng.com
DATE 12-27-2012
NO CHANGES HAVE BEEN MADE TO THIS
PLAN OTHER THAN THOSE HIGHLIGHTED.
s
w1cx_ CI S
f Phone: 434.582.6175 1Phone: 434.994.2700
www.wwassociates.net4119 402 Greenbrier
4Charlotteville, VA 7798tBxVA2
DESIGNED BY:
JJK
DRAWN BY.
To, JFR
REVIEWED BY:
DJM
WWA NUMBER:
206030.10
APPROVED
by the Albemarle County
Community Development DPpert c
Date
File �p .
TEMPORARY & PERMANENT
SEEDING SCHEDULE
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/A DATE:
C-25-ES-NAR.dwg V. NIA 12-05-07
REVISION NUMBER:
3
DRAWING NUMBER:
C-25
SHEET NUMBER:
25 Of 57
TEMPORARY SEDIMENT TRAP SILT FENCE CULVERT INLET
SEDIMENT BASIN SCHEMATIC TEMPORARY SLOPE DRAIN
1' VARIABLE* PR 0 TE C TION ELE VA TIONS
ENDWALL
* CREST OF EMERGENCY
RIINALfi ARIA6 1 DESIGN HIGH WATER SPILLWAY
GROUND
1 4VARIABLE�
(25-YR. STORM ELEV.)
ELEV.EARTHEN DIKE PROVIDE INLET
METAL (COMPACTED) PROTECTION
67 CU. YD./ACRE MIN. 1.0' EX ENSION CORRUGATEICOLLAR0.5' ,_
N TOE OF FILL CULVERT MIN. 1.0' WATERPROOF SEAL A
RISER CREST MINIMUM ®P Wl D T Tr
67 C.Y. AC. 24:1 D+s'/ DEWATERING67 CU. YD./ACRE o DRY "STORAGE DEVICE (W)
4' MAX. -
A
I
(EXCAVATED)
FILTER CLOTH ORIGINAL 67 C.Y./ AC. PROVIDE OUTLET 9 REQUIRED T
" FOR �'EDI1lIENI'
GROUND
WET STORAGE
PROTECTION
'";`' ``{{ STANDARD FLARED END SECTION
T RA P E Bl �L N EN T S
* COARSE AGGREGATE** CLASS I RIPRAP
SEE PLATE 3.13-1 -
1
° -� � ° SEDIMENT CLEANOUT POINT _ T_rT ° (" WET " STORAGE TO 34 C.Y./ ACRE) DUCTED I ACCORDING T ® El G11 OF
CROSS SECTION OF OUTLET TOE of FILL
SECTION VIEW E /� /,SBA NK /� �E ]®% T /
SILT FENCE o ° ° DESIGN ELEVATIONS WITH EMBANKMENT 1 �l (T_LE_rj`
* DISTANCE IS 6' MINIMUM IF FLOW EMERGENCY SPILLWAY NOTE: SEDIMENT MAY BE CONTROLLED AT OUTLET IF UPLAND PONDING
CLASS I RIPRAP LENGTH (IN FEET) _ IS TOWARD EMBANKMENT
6 X DRAINAGE AREA WILL CREATE PROBLEMS
_ (IN AC.)
FLOW
DIVERSION
DIKE * DESIGN HIGH WATER J,20
(25-YR. STORM ELEV.) OPTIONAL STONE COMBINATIONH "o w
N. 3.0'EARTHEN DIKE
MIN. 0.5 (COMPACTED) 3:1
MIN. 11.5 0.5 2.0
2.0 1.0 2.0
67 C.Y./ AC. 2.5 1 .5 2.5
1.0 1.5' DRY "STORAGE :. 3.0 2.0 2.5
D+6"
//- ��-- 67 C.Y. AC. RISER CREST r; r: D 18' �• 3.5 2.5 33.0
( --M-- - WET STORAGE DEWATERING H 0 H
�� 4.0 3.0 3.0
h' DEVICE -
I ** ^ 4.5 3.5 4.0
COARSE AGGREGATE / �-' FLOW -
= _-- - - - 5.0 4.0 4.5
2.5' -
-1 I I I I III I II I I I �) I I I I- III III I I I
EXCAVATED / FILTER CLOTH �� SEDIMENT CLEANOUT POINT -
AREA
SECTION A - A EXCAVATED AREA T-�1
/ DESIGN ELEVATIONS WITHOUT MAX. DEPTH = 4'
*VDOT #3, #357, #5, #56 OR #57 COARSE AGGREGATE CLASS I RIPRAP EMERGENCY SPILLWAY GROUND
**COARSE AGGREGATE SHALL BE VDOT #3, #357 OR #5 TO REPLACE SILT FENCE IN " HORSESHOE " WHEN
HIGH VELOCITY OF FLOW IS EXPECTED
OUTLET PERSPECTIVE VIEW) CIp (RISER PASSES 25-YR. EVENT) CyD ELEV. SIT
rJ l�
SOURCE: ADAPTED from VOOT Standard Sheets and Va. DSWC PLATE. 3.08-1 SOURCE: VA. DSWC PLATE. 3.14-2 SOURCE: VA. DSWC PLATE 3.15-1
SOURCE: VA. Dswc PLATE. 3.13-2 SOURCE: 'VA. DSWC PLATE. 3.13-1
DIVERSIONS PIPE OUTLET CONDITIONS CONSTRUCTION OF A SILT FENCE BL 0 CK & GRAVEL CURB INLET T YPI CAL WA TER WA Y
(WITH WIRE SUPPORT) SEDIMENT FIL TER CROSS -SECTIONS
A A 1. SET POSTS AND EXCAVATE A 4"X4" 2. STAPLE WIRE FENCING TO THE POSTS.
TRENCH UPSLOPE ALONG THE LINE COMPACTED SOIL
10% SETTLEMENT I OF POSTS. CURB INLET
0.3' FREE BOARD 7- 0
3d0
I
=I
nESIGN aLOW n�rxdo
:M5 i PIPE OUTLET TO FLATAREA WITH NO DEFINED TYPICAL CONCRETE LINED DITCH TYPICAL GRASS LINED DITCH
1111011111
PLAN VIEW _ ` TYPICAL VEE CROSS -SECTIONS
CHANNEL
IIII � 1 1 , IIII t..j :: T
TYPICAL PARABOLIC DIVERSION
L a G-�-i - L� I_ - I
1= I D
PARABOLIC WATERWAY CROSS-SECTION
10% SETTLEMENT II d FLOW III I I II WIRE SCREEN CONCRETE BLOCK
0.3' FREE BOARD I GRAVEL FILTER 1 I 1 w i ! TYPICAL RIRRAP CHANNEL
! ! r r r SECTION A -A FILTER CLOTH KEY IN 6"-9"; RECOMMENDED FOR ENTIRE PERIMETER
Lo Da�Eerx 3. ATTACH THE FILTER FABRIC TO THE WIRE 4. BACKFILL AND COMPACT THE _ D
DEsccx F
FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATED SOIL. - W (xEraIN CLM)
- A _
RUNOFF r WATER WITH TH OVERFLOW FILTERED WATER
3dO(IN.) SEDIMENT
_
IIIIIII I-IIII I7_JIMIII IIIII 111111A FILTER CLOTHNOTE: II
ALTHOUGH FILTER CLOTH IS
- PREFERED, A GRANULAR FILTER MAY BE SUBSTITUTED FOR
TYPICAL TRAPEZOIDAL DIVERSION d ,;:..,' / rFFrtrtF+y
FILTER CLOTH. ( FOR PHYSICAL REQUIREMENTS, SEE STD. &
P.�/ :: I I- SPEC. 3.19, RIPRAP)
PIPE OUTLET TO WELL i II "::;.'. • IIII "" '' :0 F TYPICAL CONCRETE CHANNEL
DEFINED CHANNEL-
/ / �'' I• • • SEDIMENT I I : •';> "' 4111 EXPANSION JOINT A
:•" _ 90)' SPACING
10% SETTLEMENT J PLAN VIEW I r _ � ( )
�- 1 5 •.1 + 1 J• I_ 't'S WIRE SCREEN •.° `.. .. o
0.3' FREE BOARD
! I! I t w t l! a L FLOW -
2" X 4" WOOD STUD CURB INLET ".
DESIGN FLOW DEPTH _
111'• 1�0�eD g'o. 4.y01:'q ..,. .�s�ff.�9I/ �, p, 1'•P.'A`.vF.,�..yln; N':•t,•:.�
IIIIII I I I , r ' �V: 6:. fiii.� •`ii.4:Q'�'-'.Vi 'b-� :•,f.'i�� �7s O'.y°°: W o`•• ::tf 113"
o t = I SPECIAL APPLICATION NOT TO SCALE A
�� _ �
DO
d EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. � 6" LOCATED ATEJOINTS
SECTION A -A THIS METHOD OF INLET PROTECTION IS APPLICABLE AT 6X6 WELDED WIRE FABRIC
FILTER CLOTH KEY IN 8"-9 RECOMMENDED FOR ENTIRE PERIMETER FILTER FABRIC CURB INLETS WHERE AN OVERFLOW CAPABILITY IS NECESSARY D AS REQUIRED o° d
"v .
°'b.'b.
TYPICAL VE E - S HAP E D DIVERSION NOTES: 1. APRON LINING MAY BE RIPIRAP, GROUTED RIPRAP, GABION " W "o
TO PREVENT EXCESSIVE PONDING IN FRONT OF THE STRUCTURE. 3' DIA. WEEP
BASKET, OR CONCRETE. t.`, "' o, ° b° b 4; b4 = b 4 5 4' b 4= 6°' S 4 b 4 b o E
HOLE, a o.c.
2. La IS THE LENGTH OF TIRE RIPRAP APRON AS CALCULATED
II I I I WIRE I I= o°" o' ° b= o a o o s o o¢ a o 0 o e 4= b° •
D V USING PLATES 3.16-3 AtND 3.16-4. OP ) I IJ-- SF * GRAVEL SHALL BE VDOT #3, #357 OR #�5 COARSE AGGREGATE SECTION A -A
3. d = 1.5 TIMES THE MAXIIMUM STONE DIAMETER, BUT NOT " 14 -
LESS THAN 6 INCHES. -� CONTRACTOR TO ENSURE RUNOFF IS DIRECTED TO ALL INLETS ON GRADE. TRAPEZOIDAL WATERWAY CROSS -SECTIONS
Source:: Va. DSWC Plate 3.12-1 Source: Va. DSWC Plate 3.18-1 SOURCE: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control, PLATE. 3.05-1 SOURCE: VA. DSWC PLATE 3.07-8 SOURCE: V.A. DSWC PLATE 3.17-1
Sherwood & if ant
TEMPORARY FILL TEMPORARY DIVERSION DIKE
Cn
AMENDMENT PREPARED BY
DIVERSION
I
Li
I Compacted Soil
FILL SLOPE Dominion
18" min. i # ; I ; , Engineering
GO
EARTHEN RIDGE s l s t i s s s -Flow
o -
9„ ��� C' a2 5outhdleanto �2 Drive
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N IIII IIIII ( I I I I I I I I I I I I I I I I I I I I I I II I I I )IIIII 'e e 434.979.minion ng I f()
I 94 ens domwoneng.com
4.5 min.
� s
IIIII IIII IIIII I E-1 I11031111III)IS I I
(IIIII III I II I I I I I I I I I iiii lip-111111 Millill Milli 11
I
DATE 12-27-2012
o% 2 D D NO CHANGES HAVE BEEN MADE TO THIS
PLAN OTHER THAN THOSE HIGHLIGHTED.
I
i SOURCE: VA. DSWC PLATE 3.10-1 SOURCE: V.A. DSWC PLATE 3.09-1
w
j 1 ADDRESS COUNTY/VDOT COMMENTS JJK 02/08/08 TH OP H Op b = DESIGNED BY: PROJECT. H YLANO RIDGE REVISION NUMBER:
= 2 REVISED TYPICAL SECTION FONTANA DRIVE JJK 03/13/08 l o� Igo ENG1N JJK (AKA LAKE RIDGE) 3Y Ta, JFR DRAWN BY:
0 4 ADD PHASE LINE MFM 12/27/12 U o S ORS FINAL SUBDIVISION PLANS DRAWING NUMBER:
DAVI NSEN MICHAE YERS ANNERS TI TLE:
j L' o. 4 Lic. 0.33028 REVIEWED BY: EROSION & SEDIMENT CONTROL DETAILS C-26
4- "d DJM
Box 4119 1402 Greenbrier
a w j -�SHEET NUMBER:
0 ti nchburg,VA24502 Charlottc; 2,VA229 WWA NUMBER: FILE NAME: SCALE: DATE:
dCS Phone: 434.582.6175 Phone: 434.984.2700
°- SSIONAL F'� SS'I ONA L �'� www.wwassociates.net H: N/A
J N0. REVISION BY DATE NO. REVISION BY DATE 206030.10 C-26-ES-DTLS.dwg V. N A 12-05-07 26 of57
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DRAINAGE \ \ \ _ = E.. .. �..,..: »,;, �. :_ \ -o •�/ 1
IDENTIFICATION
SIZEAREA (AC) (IN) \� \ \ / �� . _ �_...' \ \ \ \\ o\ \ \
TS D NO. 1 1.1 18 \`\ _ _ - - - -41
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TS D NO. 4 2.05 21
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C� RR SPIKE IN / EC-2 DDT.
I— CL 22 POPLAR TREE ` / r l I I I I I I I I I I I 1 I Ii1 \\\ \�\� \' / /
C� ELEV.=450.37 _ I — '' I I
j \ _ t 'tI + tI II \
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CL / I \ / — \III I , I , Pt- I , I / �' \ \\\� \a=:<:a /, // �o / // J1 / I / ' ( I ( I
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/ G \\ \ \ / , \ \ \ \ \ \ \ \ \� \ /. • . /:..::.,. / /\ CRpC1iNG I
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// fig; / D-/3
iSA- .2/AC//`
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A retaining wall is proposed to be \ \ \ - ,1 / / \ bOJf,
/_
constructed around the existing shed \ \ \ I '~� �r. / / I (( �A . \\\4
t d TMP 78E-118 d th t'
EXISTING EROSION AND SEDIMENT CONTROL LEGEND
3.02
MPOARY PA
E NSTRRUCTTIONVED
RANCE
CE
3.03
STANBILIZATIONN ROAD
CRS
F.015
SILT FENCE
1ULVERT
3.08
CIP
INLET
PROTECTIONTEMPO
3.09
DIVERSION
DD
H
TEMPO
DIVERSIONWAY
VI/D
H
DIVERSION
3.13
ST
1 TEMPORARY
SEDIMENT TRAP
3.14
1 TEMSEDIMENT BASIN
SB
F181
OUTLET PROTECTION
QP
1
F
S
LEVEL SPREADER
3.24
SC
TEMPORARY
VRHO SING STREAM
3.31
TEMPORARY SEEDING
(S
3.32
PS
PERMANENT SEEDING
[;3]5
M�J
MULCHING
F.39
DC
DUST CONTROL
SFW
X—x-
[TO]5
SILT FENCE W WIRE SUPPORT
1 JADDED TEMPORARY FILL DIVERSIONS AND SLOPE DRAINS
2 IREVISED TYPICAL SECTION FONTANA DRIVE
NEW EROSION AND SEDIIMENT
CONTROL LEGEND
C E
TEMPORARY
NSU CUEOTION0
CE
F.05]
I SILT FENCE
F.O
SFW
X—X—
SILT FENCE W WIRE SUPPORT
[;.08]
C I P
1 CULVEPROTECTION
9
F
[�DMERSIONYDIKE
F10
TEMPORARY FILL DIWERSION
FDA
3.11
MPOY
� HT —OF —WAY
F-1
DIVERSION
D\/
F
ST
[tEMDPIMONYTRAP
[;1]4
TEMPORARY
SEDIMENT BASIN
SB
3.15
TEMPORARY SLOPE DRAIN
TSD
[3_1]
SCC
HANNELTER CONVEYANCE
JJK 2/08/08
JJK 03/13/08
1� 4 1 ADD PHASE LINE I MFM 1 12/27/12 1
1► 00
BY I DATE 1 NO.
8
F.,
OUTLET PROTECTIONI
QP
F.31TEMPORARY
SEEDING
TS
F3.32
PERMANENT SEEDIN(G
3.35
MULCHING
M U
F.39
DUST CONTROL
DC
I--{m}--
REVISION
oca a on an a VA Ing ( \
slope re -graded to 2:1 and stabilized with \ \ / A / y / \
erosion control matting in accordance with \ \ \ \ I / ) \ \ \ \ 1 •y. "
Count standards. Sloe to be adjusted I \
prior to any further mass grading activity. C)
dC-3 I,TyFEI A I 1 I I \ / A
0.
QDD fiI � �,-CD
2
k I c. C
I
AMENDMENT PREPARED BY
Dominion
Engineering
172 South Pantop5 Drive
Charlottesville, VA 2291 1
434.979.5121 (p)
434.979.1 G8 I (f)
dominionenrjxom
S
DATE 12-27-2012
NO CHANGES HAVE BEEN MADE TO THIS
PLAN OTHER THAN THOSE HIGHLIGHTED.
BY I DATE
TH OF
I
J DAVI NSEN
L' o. 4
I ANAL
U
oa-
BENCH MARK
HYDRANT BOLT
CLOS ST TO RD
( )
ELEV.-'569.33
CONSTRUCITIQ EdTR NCE
-w
Zj/
/
TSF
r
r--
Aji%(n OD F
L1C 0.33tFL'r
k ��
9NAL
t
w�11090,11CI S
Box 4119 1402 Greenbrier
00, LO'chb, rg, VA 24502 Charlottesville, VA 22434.582.6175 Phone:434.984.2700
www.wwassociates.net
DESIGNED BY.
JJK
DRAWN BY:
To, JFR
REVIEWED BY:
DJM
WWA NUMBER:
206030.10
\
BM
IS DRAWING IS A REDUCTIOI
PHIC SCALE MUST BE USED
SCALE: 1 " = 50'
PROJECT: HYLAND RIDGE
(AKA LAKE RIDGE)
FINAL SUBDIVISION PLANS
TITLE:
EROSION AND SEDIMENT CONTROL PLAN
FILE NAME: SCALE: DATE:
C-27—E&S.dw H: 1 Pp--50) 12-05
9 V. N/A
Al
50'
61
REVISION NUMBER:
3
DRAWING NUMBER:
C-27
SHEET NUMBER:
07 27 of 57
4 / I I
I I1 ` t �[. \
KA IU _ N�`� ' II bo 1 / / // / / °°, \ �� \\ \ \\\ \ \l r/ I 1 1 f TV`1MF/O1r?ARV
�0�,'�Y �20.,r EMT / l ( (l 1 \ \ \ \ /---590-
Required basin volume must be l ( ( I I I I ( I / \ / I I I "- I - f / j / �\r `' \� \ \ S \ \ \ I ( tt10'� C,E S /ROAachieved prior to any other mass �_%-_.. 1 ,/ , y. / %'� \\ t</ /--- grading activity. activi \ I I / // ( \ F / ° _
t� g �• J / / / ( ( ( � i �, 70 � • l / �/ / � // / Ill r 1 I _ , , / � , ,
- ----
/ 98A
Sediment Basin #1 Design ,. lI _ c ..�-0. 2 AC - -
Cdlt7.4'4tif'aP1kk44Xf GRE57 4F Hid£Rti%P :r / / / / I I 1' L -'� ''• ..... <' / / IF I I ( / / / \'- moo. ..! w*5;>.:•' ... _ .2 _..
x' itf�4U; SPUMY - �/ / T� I � (` �� .� ' r� � -- 0 5 IP- \ 11 � -
/ / 1 LI I to - C __� N� _, � � rav; I _ _ J_
drainage area (acres) 27.6 DESIGN HIGH WATER � // / ; / / ( � /`�,�ti Q� 60\ - , / / `/i / � � ! I 1 I J I I � � � ( � � � I / A 0 �, f� `' _ � - � ,.. � � � � 8(} -
basin volumes: (using 2' contour intervals) (zs-rR, SiORlA aer.} / / / / / % • ) / t / 1 - \v / F� If .� / I 1 I I j / /� i // , / � - wr �_ • i - -I- -
/ / / / / / `") / I I v / / / /' III III III tr r W I �E' �� I(v�E (( I l I I T xi finf 54% pi e I N move n itrd Q ` ',.-,1' -- .
elevation (ft) contour area (so volume(cy) �,�• , p ( ? � / / � � 11� I I � I il. � � 7 i
/ / / / �r,`° / / // / ' I I I ! I 1 I I C in /tHe s,�me-ah ri' 'en g Ithl'`ti h e Istl ` c� se edit. i r I 8 41 ,
470.2 -�1- 4208 -- ...-.. ���. ,.Q• - / ,' / / / I I. _ I j I I �i -` - / I .� - A ��, \• � `�..... � -1 - - -
.. ...-.. RISER / /. D po �' ,/ //// / / //. I I I J f I / 1 ll it c%n'str hti& rk orf ne a,t ' q• .a! �,,rr I ,.„,P,, �-t �; `�: 9' - \
\ / T I I I i 1/ 1 I I Y o /p p, he.
472 7178 505.5 F' .:;:: :•. .:;:C: // / / � I � I I rI t ,,,.✓ :� ».,
5398 320.2 DES`/ • STORAGE � r�wAtewrvc / / / / / / � / / DrA 0.16 C r J / / / l I I Ir� - 1 % / Ve 1��,;� \{. ,, \ - 0:� -- � \� ,� �1�,
474 7316 8643 791.1 1090.9 '� �� / / / / / / . / ! / l / ' I III I ( I I ( I� h p p a�ou d /of t e �mag arlea ove 6� i�/ ° rat I. -U .- - - - - - _ r
/ / / 0.65 / I 1 Ex• ''
;� w
476 9166 1o2os 1401.5 17as.4 • wET STORAGE / / d / / . � % � i / � / / I t_ _ J ( I I /be c�mple d at rthej�nd/of` a h (day In I �i h a a � \
i/h 00sitive' ;dainge v. Cf a nei nd or inr 478 11066 1187321509 2605.4�I st bi�ize� ,� 0 480 12938 18423 30399 3726.3 //.////\//i� aihte in/the eye of t rfr> s riot o th
c>dE�rT i / ' / / / / / / _ a I J I I I III I_ I _ I I /\ P
482 t1ET • SFQRAGE REJCEO J 1 /�" / / . ' / \, / / / / /� / + I _ I J ._ .__ I, (orC. Work on he' i' I s all n t\ 0 ri�er�cel o a
�0 34 C.Y./ ACRE) / / . / / c� / / \�1 I 1 I I I I _ _ ( / vj / /t P 9 9 c, Y_-
* y / / _ I I / I I (if Jsi nif%a rain �s ect d 6 f rye iha a
As Built Areas As Built Volumes 1 //./ / / / \, / / I I I I I I I ! 1 1 r p P .� P I ''p --
/ l �' j /'� I�-�-L I I I / 1 I I I I l q- e4re lace /sect' of pipe a% b f II
I I I I ► \1, I p � � � I � P I9 I � � � ►� , � � � � ,\ _ - � ��..Y �T
wet storage: ` //. y / / / / / / / I l �/I l / I� t J 1 I�/,l I I I I I cpgrdi}�atyo �lith th� �qunt)t Ins eft r ys Ire4uir.d
l
wet storage required (cy) (67*DA) 1849.20 design high water 479.67 /// " / / / / / / / / / / �5 / I-� N ` / /1 / / I (( 3� lf�G J I I I ( I I I i eXt�CU e� a �{anner s tisfo tdry� t \i
J ( ( ( 1 }a ( / P � q tfie Count Ikts
r ' \ 1
dewatering orifice elevation (ft) 477.04 top of dam (ft) 482.00 / , / / / / , / ' IPA �`� 560- �� 1 / / / j�' J ( I I \ / / / ' D-g4 M -
9 P (Y) P () i-~ / C= .6 I J / _ �• / 1 1 �!
wet storage provided at this elevation c 1877.10 to width of dam ft 10.00
available volume before cleanout (cy) (33*DA) 910.80 bottom of basin (ft) 471.00 / / / / / I ( / (f�1 % \ r�
cleanout elevation (ft) 473,00 approx. bottom dimensions: 125x60' / / / \ \ / / /s / ( \\ _ - _ _ - - / Fj I I/� �I j CYA=O. 5 l,C \ \ \ I - \/ \ / \ / ` r T - �
distance from cleanout to orifice (ft) (> 1') 4.04 upstream face slope: 2:1 / / / / / I \ \ \ / r // f \ \ _ _ - / " / (�r'h I (�_ \ \ \ \ \ / a�/ / \ y ` 5'0 \
downstream face slope: 3:1 / / / / / / ° �\ \ \\ / ! / / • �� / -_ - _ 5 0 / i/ / /� (( - rr i \� . x
dry storage: / / / \ \ / / /. �� � ',! �� - -" -- _- -- =a0 ,- 11 � / //L I �� � � %/ \ \ / __ 1_-•-__
dry storage required (cy) (67*DA) 1849.20 baffles: no ��-_- 530 T J(�../
/ T
principle spillway crest (ft) 480.00 length of flow, L (ft) / / / 40 - \ \ \ / / v - �2 % '-
d storage provided at this elevation c 1849.20 effective width, We ft r / / °j / \ ' / `�/ / / /' �- w - - L ��- L I -"`a �--- _ -- I ( / /
diameter of dewatering orifice (in) 12.0 L / We (baffles required if < 2) / -
diameter of flexible tubing (in) (orifice+2") 14.0 \ C
collars. no - / / // / / h 1 - a �.- 1 \ \ \ p - _
/ •� ' / / / `-� a ,..,.K- .. , _ _... - �:a � _--�.--• • `�' \ / - � '�-� � -I-
runoff: depth of water at spillway crest (ft) I \
1
C (use 0.45 for bare earth) 0.45 slope of upstream face (Z:1) I .�-•- Rr � � //�// / / / -_� � -1 _Po-f. ^�•
tc (min) 17.7 slope of barrel (Sb)
(�-�
12yr 3.6 Q 2yr 44.7 length of barrel in saturated zone (Ls)
25 r 5.3 Q 25 r 65.8 number collars required
dimension of collars \� \ / / \° 0 ;� \ . ///
principle spillway:
available head ft4.7 emergency spillway: no r \
�---�'"'° �- ate•.. .
diameter riser In 48 required capacity Q25-Q cfs - / \
C) q P Y( P)( ) / `
//� / r / / / � / / / � � `Z � / �\ c�/T���-
s illwa capacity, Q ) O / �0 \ �` - yµ
spillway p y, p (cfs 55.6 bottom width ft _ / / / / / / � _.<
diameter trash rack (in) 54 slope of exist channel (ft/ft) L jw / ` �j� �''\ \ \ / /�y s / / O / 1 / / \ \ \c'^ t a✓rSTS GAL F 1, . -30 ,- 40-
barrel length (ft) 103 minimun length of exit channel (ft)
head on barrel through embankment (ft) 7.0 crest of spillway (ft) ° \\\ \ \ ` / / // / / \j / / / / ( /20
diameter of barrel (in) 21 / I \
Sediment Trap#1 Design ,\ \ - S / / '/ `� ' �" l - -- _ / -� \i \ \ \ -
g �'�r / / 1 / T -DC(u• D_7B
drainage area (acres) (<3) 1.42 550 _/// �// / k ~' �'`l\/-., 4 / / / / !, / / \ - / \ P� j ` ! • \ - 6 p - / I \ -
\ Ul • \ C 0.45
trap volumes: caesT OF STONE WEIR _ 4 - , - -_ „ / \ / \ - - ;' \ \ \
IR-73A I L - / \ - i \ -
elevation (ft) area (so volume(cy) ELEV.GROU\` ,. _ /° - _ '` \ \ / / // / ' \ \ / / / / I - , ! - / / I f / i / / I \ t\ '� / \ �2A i \ -
514 315 i /7 _ - \ //1//// / / X _ / -/ I / / I \ _ / _ I - /t \ I \ I \
516 667 36.4 aRvsTaeacE u - -VARVUE \ / 54 \,'y \-_._ / r �/
- _
518 1121 102.E / % J // - - i ` -
7 _ /// // ' 0.61'•_' - i 5 I I \ -\` ` \ \ I \ i7 \
520 1675 206.1 - - - �� - - / / /- / I / - _ -
w7 T sroxAse rr \ / ` / / /l
IXCAVkTED
t } a' ktax. 7'�.r£tr c�oTH oT�a�wu. J/r _ =�'� " / -- -'�\ u _ 7A I � ( / •r �\ � �.. / I \ \ \
T5-- ti , / / / I
_ / I; `• / / , / � �:
DA-o.67 AG
I - , _M~4~/C=0.5� / L I•ST \ \ " \ I i ` �q j / - \/ I- j
wet storage: Etnr:�s t ctxsE Ar>"IAssr use / - - F l \ I DA-0.54
��� -w_-_ v / / I i
wet storage required (cy) (67*DA) 95.1 .� _ ' - � . � �,;;•.,--'- � _l- •.�"' �' / ,I' / ' / / / � j 6 i
bottom of stone weir (ft) 520.0 7 / / / - /530 ` T \ ' \ -� / r / / D-2' , ._. - ' ( i III / D-7� t / 1 / / ! �V \-C=_0. 41 _ ` / \I .. �... _ 2 Z Imo\ \
.uw.
wet storage provided at this elevation (cy) 102.6 , - �a2ff� I D A e -P \ DAry- 4 AC
,° _ �, \ s.. I - , t� r W� ar l / /'< - 6 AC i DAB A jet\ ��I / t - L\ �.�
slope of wet storage sides 2:1 `'�-- �-^ � A,� / - 5 + 97 � 1 � � � _ .�
weir length (ft) (6xDA) 8.5 /r'� T I , -1 �t"v <'�r �`_ v' , , r \ w , r �_
1 r-` -� \-- - _ ff
dry storage: bottom of trap elevation (ft) 523 _
r4
4V -
* \... �.��.. -..., , - fit, �, . _ � �- --�• T / �--� � �--� \ \ -� --_
dry storage required (cy) (67 DA) 95.1 bottom trap dimensions 30x10' / / - / j - _ - - w �. ," . r �,
IP - /
/ .- `� •,. - w,,, ''ti:�.,. '.'•w.. / - - `" ~' , ,. I .'" ,^ �' ✓..,... y�,.,.., `-'� ' I vim.' -- - \
crest of stone weir 522.0 top of dam elevation (ft) 519 / \ ; w.vuw
/ i _ _IP
/ p=0. C - - -- -20 °\ _ �, - ., DA=0.45 AC -
7 u
d storage rovided at this elevation c 103.6 to width of dam (ft) - I - `-
( v) �- / r
dry g P '\. D 2-3 C- C7 °�.,,�, - ~\ :v l �. �_ Win..• - `\ �a>:, .,,`-� �_ .. �,� � .: .i'�`�`�,.-..- ...,... / � ?:':�. �,.-, �`s��3.o:� :--�: --
50 x30 /
2.1 to trap dimensions / � - I --.- ` / `< 6-� �-• � i sea _ _�, � ,
slope of dry storage sides p P � C= � \ � � ft
-
' _
\ \ 0 / %'\ \ \ r /.,,., `` rr' �jY - \ -`- "'6
\ - \ \ -
-
-
\ \ \ \ i O _ - - -
AMENDMENT PREPARED BY
AlV1 \ i /} 38 - _ , g - - 1FIR S
2�
\ \ \ \ -25��
\ \ - 9A=o.Ib AC y� C / _ - 2� ` /- r ��/ l / - C 4 -, =T` r= / y - 0
Dominion \ \� �• _ - __l / _ r - ,--\ \ I
_AC
Engineeringi=0.6- - ' II�'', I k.•, _ \\
7 I I I j✓ �• 'I 0 ° g 490 500
.p I 12 south Pantops Onve
CharlottewIle, VA
979.81219(1 1 \ \ \L 1. 1 , _ 1 O i / I / - _ \ �.Is,
�OQ 434.979.1681 (I)_i- / "� 1/`!.
.•
Leh S dominioneng.com \ \ /�=0 4 AC� • . t /� i \ / d i 1 / / / ems" l ' \ _
/ ,4
� v A \ / \ v � � _ � - � � i� P Jr MU _ - _ 7` / v l \ �:; I ' 1 / � at ,,,°\ / /1 � •_-� � � ^� v .
1
\ S
\ /\ � , - _-----`` y 5 T
DATE 12-27-2012 \ �w \ _ - - - - - - _ _ - - - - - _ - -
,, _ l �. ` � _ �MM�� OF CLEARING AN� t;RADING -�
V \ 4 \ \ \ I 'f -�� f I `~a, l / j\--��"_ PS - '•�=k� '6 � 7 � ax '•-•-_- � ! '�.- ��. I t l 4 / / �
CHANGES HAVE BEEN MADE TO THIS \//// \ \ I D �24 y - - ?- \O- /f /\ i / f /
NO _ - PLAN OTHER OTHER THAN THOSE HIGHLIGHTED. \ - - - D-16B -( - _. -_ _ = -- 'I'' / : r = '` p1 / / -_r
DA=O. � AC _ h0 ( r - - � - - 6A=o.44 @C11 _ -� 3 / 1~ r './ / / q \ �, I- - -, �,. -\ I SB 1 / /' / t / NEW TR L1NE -1 -
\ p '/ -C=(6 - _ - - - - - - ST CK PILE : E =0.45 _ __ - DA=0�1 /} -�.. c - - -
� \ As Built of SB-1(01-09-13)
IF THIS DRAWING IS A JEDUCTION \ \ \ \ -\ - \- - _ �'' I " b - ( GRAPHIC SCALE MUST E USED ~ \ \ \ `'. \\` - - \ - ( - (- - / /' I / / / I I �� ;' \ - / �q,0 �3/. / / (See volume caliu �� tl�is/sK
\ / / -j\ \ /° \(°\ -_ - -- ��- T- / 1 / / / W21 r 1 Yi~ r4�8-�I�
V) \ ,� I
SCALE: 1 50 \ 1 /� - - `� - _
w \ \ \ � \ \ I `• .,;� I � \ -- �- , ,�\�`` ' \ ' '�` .� �w4 1`0-•-�`"� ,/" 1 _- D -15 / ,•.,�,/`� - I t)/J � '- l / I `to/ ` It I / .° / -..�� / ✓ / / / / / , - � ,- ,\,,.,, \ \ \
\ \ I I,� - - - - - DA=o.2
C=
` 6 ,\ W_,"�
50 0- �5Q
O
-\ \\ \ \\ \ \ \ \\ ` \ ', \�\�.. `-'. �. C_ _,4Y 'e.""`.-•.,u„,.,,... D - 1 4 n-E 1 , 00
/ / \ _ _ •� J
-j I/ I
_
MATC H 'NE-D RA 17 - -, _ -_ - :� �P you,
\ _ \ \ - : � - _r � - /TS o \ \ B
4 \ \ 7 \ \ ` \4 \ - \ \ \ \ \ \ \ _ - .__:_ _ - Iv--� l / / ��r B ' 1 \ ' / t / / l I I I y I
NUMBER___ - - \ \ / --- _ _ -._ -- Y - __ I, t \ / f , = , / , / / I I I III► I I��
\\ \ \ \ \ \\'\ \ FD T \ 1 -„ - v _CTW14 / / / / t' / \ ; \ I 1 '� i I ICI
�I � � -_ - .� v /�-v. � \ \ � \V w\mil\ � / / \v _,• A \ \� l ;� _ r r, � "� `..�;,=�: � ��- a�`-- '-� D �, - �' v ` . ���`��� ' �// / / � / / � � \ I \ ( ' i � / / I II � I I I � 11 I � v / / / // � D4�
EF\-�0�r{�,
1 t D! I/ r ' ' � _ , • / PERENNI L ST E�M
A / A NG \
o% \ \ - - \ \ \ \ \ \ \ \ - -� re .' r - N �hr TREE'`zINE-�` - - - A Tt - IPIE / / / / \ ° \ \ / / POND RISER
\ ~ _ I G'RS �(' /. _�, / I / TOP CONCRET =
I � \ \ - - / � � �. \ \ � \ \ \� � - �� \ - _ ° ,--- : -` =`'�0 ,-�� = �\� ' ,• ' - _ ` •\%` D � 490 � ---` ' -F{_ _ / / A % / •`-~_,. \ .---- ' \ `'�. � f � l I I / r�' .,-\ \� �--- i " E 480.08
�/ \ `T ME'�?R�1RY� (D\'
I / : \ INV 10 PVC-476.41
\,�<\ 30 AC II1 / _
w / 5 INV 24 RCP=472.03
m 1 ADDED TEMPORARY FILL DIVERSIONS, SLOPE DRAINS & SCC JJK 2/08/08 TH OF PL H F DESIGNED BY: PROJECT: HYLAND RIDGE REVISION NUMBER:
2 REVISED TYPICAL SECTION FONTANA DRIVE JJK 03/13/08 j'1 �� Grp JJK (AKA LAKE RIDGE) 4
0
Y 3 ADDRESSED ACSA & RW&SA COMMENTS JJK 04/04/08 SNGIN ORS DRAWN BY. FINAL SUBDIVISION PLANS
To, JFR DRAWING NUMBER:
DAV NSEN �' NRCHAE F.1kIYER 9 ANNERS TITLE:
5 ADD PHASE LINE MFM 12/27/12 L' o• 4 Lic. 0.3302 REVIEWED BY: EROSION AND SEDIMENT CONTROL PLAN C-28
41
CI S DJM
o ti �° f �w�� SHEET NUMBER:
r;' Box 4119 1402 Greenbrier
chburg,VA24502 Chadotteav3lle,VA229 WWA NUMBER: FILE NAME. SCALE: DATE.
�c� CSC Phone:434.582.6175 Phone:434.984.2700 » ,
NO. REVISION BY DATE NO. REVISION BY DATE S NAL 206030. 10 C-28-E&S.dwg 12 - 05 - Q 7 28 of 57
`SIGNAL � sI p �� H: 1 =50
J www.wwassociates.net V. N/A
Incremental
c A
Channel
Allowable
2-Year
Maximum
Segment ID
Incremental c
Drainage
Tc
12 (inlhr)
Q2 (cfs)
Slope
Sl(foort)
Geometry
Liner
V2 x R2
n
Velocity
Velocity
Ito (inlhr)
Q10 (cfs)
10-Year
Channel
Remarks
Area (Ac.)
(min)
Material
(fps)
(fps)
Depth
Depth (ft)
Incremental
Accumulated
b
�
Z2
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
1 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
1 0.30
0.78
0.23
1 0.23
1 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
1 0.30
I 0.38
0.11
I 0.11
I 5.00
5.20
1 0.59
1 0.182
0.0
3.0
3.0
EC-2
1 0.41
1 0.050
1 4.00
3.89
6.70
0.76
0.31-1
1.33
Velocity OK
Depth OK
OUTLET PROTECTION DESIGN
* apron
assumed to be on level ground
Outlet
Hydraulics
Apron
W
F
a
2-
11
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m
N
C
OL
W
N
O
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L
M
Y
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N
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N
5
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o
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L
i
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cV
CV
N
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0
z
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0
j
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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
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