HomeMy WebLinkAboutWPO201900070 Plan - VSMP 2021-02-09EROSION & SEDIMENT CONTROL NARRATIVE E&SC MEASURES & QUANTITIES VICINITY MAP: 1" = 2000'
PROJECT DESCRIPTION
STATE MINIMUM STANDARDS
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SAFETY FENCING
E&SC STD.3.01
820LF
THE PURPOSE OF THIS PROJECT IS THE CONSTRUCTION OF A LARGE SINGLE FAMILY RESIDENCE, POOL, POOL HOUSE, GARAGE, AND
1.
PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS
CE
CONSTRUCTION ENTRANCE
E&SC STD. 3.02
1 EA
SUPPORTING PARKING AND CIRCULATION FACILITIES AT THE PREVIOUS HOUSE SITE AT 1376 OAKENCROFT LANE, T.M.P. 59-32A. THE TOTAL
REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS
PARCEL IS 71.90 ACRES, AND THE PROJECT LIMITS, OR LIMITS OF DISTURBANCE, IS 4.23 ACRES. THERE WILL BE AN INCREASE OF IMPERVIOUS
THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS. PERMANENT STABILIZATION SHALL BE
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SILT FENCE
E&SC STD. 3.06
2,036 LF
AREA WITHIN THE WORK LIMITS FROM 0 SQUARE FEET TO 27,880 SQUARE FEET AS A RESULT OF THE CONSTRUCTION. STORM RUNOFF FROM
APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR.
THE DEVELOPED SITE WILL CONVEYED VIA SHEET FLOW TO THE ADJACENT PASTURES AND VIA SMALL DIAMETER STORM PIPES AND SWALES
IP
INLET PROTECTION
E&SC STD. 3.07
8 EA
THAT TERMINATE WITH ENGINEERED LEVEL SPREADERS THAT ARE INTENDED TO ENCOURAGE SHEET FLOW BACK TO THE PASTURE.
2.
DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT
TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL
OP
OUTLET PROTECTION
E&SC STD. 3.18
5 EA
THE PROJECT START DATE IS JANUARY 1, 2020 AND THE ANTICIPATED CONSTRUCTION DURATION IS 1 YEAR.
STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE.
LS
LEVEL SPREADER
E&SC STD. 3.21
4 EA
PROJECT OWNER
3.
A PERMANENT VEGETATIVE COVER SHALL BE ESTABLISHED ON DENUDED AREAS NOT OTHERWISE PERMANENTLY STABILIZED.
PERMANENT VEGETATION SHALL NOT BE CONSIDERED ESTABLISHED UNTIL A GROUND COVER IS ACHIEVED THAT, IS UNIFORM, MATURE
TQ
TOPSOILING
E&SC STD. 3.30
2.5 AC
DOGWOOD LANE PROPERTIES, LLC
ENOUGH TO SURVIVE AND WILL INHIBIT EROSION.
410 EAST WATER STREET #500
TS
TEMPORARY SEEDING
E&SC STD. 3.31
2.5 AC
CHARLOTTESVIILLE, VA 22902
4.
SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE
CONSTRUCTED AS A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND
PERMANENT SEEDING
E&SC STD. 3.32
2.5 AC
EXISTING SITE CONDITIONS
DISTURBANCE TAKES PLACE.
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MULCHING
E&SC STD. 3.35
2.5 AC
THE EXISTING SITE IS A MODERATELY SLOPING HAYFIELD/PASTURE SURROUNDED BY SIMILARLY SIZED AGRICULTURAL/RESIDENTIAL PROPERTIES.
5.
STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER
ADJACENT PROPERTY
INSTALLATION.
C
STABILIZATION MATTING
ES&CSTD. 3.36
300SF
6.
SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE
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TREE PROTECTION
E&SC STD. 3.38
1,110 LF
THE PROPERTY IS SURROUNDED BY SIMILARLY SIZED AGRICULTURAL/RESIDENTIAL PROPERTIES.
SERVED BY THE TRAP OR BASIN.
SOILS
a. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE
DUST CONTROL
E&SC STD. 3.39
4.00 AC
AREA AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE ACRES
THE USDA WEB SITE CLASSIFIES THE SOILS OF THE SITE AREA AS CHESTER LOAMS, HAYSEVILLE LOAMS, AND HAYESVILLE CLAY LOAMS. ALL
SOILS ON SITE ARE HYDRAULIC SOILS GROUP B.
CRITICAL EROSION AREAS
NO CRITICAL EROSION OR ENVIRONMENTALLY SENSITIVE AREAS ARE ANTICIPATED WITH THIS PROJECT.
OFF -SITE AREAS
NO OFF -SITE AREAS TO BE DISTURBED WITH THIS PROJECT.
EROSION & SEDIMENT CONTROL MEASURES
UNLESS OTHERWISE INDICATED, ALL STRUCTURAL AND VEGETATIVE EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED
AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL
HANDBOOK, LATEST EDITION.
TEMPORARY CONSTRUCTION ENTRANCE - E&S STD. & SPEC. 3.02
A TEMPORARY CONSTRUCTION ENTRANCE SHALL BE INSTALLED WHERE INDICATED. THE CONSTRUCTION ENTRANCE SHALL BE PAVED WITH
A WASH RACK.
SILT FENCE - E&S STD. & SPEC. 3.05
SILT FENCE SHALL BE INSTALLED IN A SEQUENCED MANNER AS SHOWN ON THE PLAN.
CULVERT INLET PROTECTION - E&SC STD. SPECIFICATION 3.08
SILT FENCE PROTECTION INSTALLED AT THE ENTRANCE TO CULVERTS AS SHOWN ON PLANS.
OUTLET PROTECTION - E&SC STD. SPECIFICATION 3.18
RIP RAP/STONE LINED APRONS AT THE OUTLETS OF PIPES OR CHANNELS.
ROCK CHECK DAMS- E&SC STD. SPECIFICATION 3.20
SMALL TEMPORARY STONE DAMS CONSTRUCTED ACROSS A SWALE OR DITCH.
LEVEL SPREADER - E&SC STD. SPECIFICATION 3.21
AN OUTLET FOR PIPES AND DITCHES CONSISTING OF AN EXCAVATED DEPRESSION AND A LEVEL OVERFLOW BERM.
TOPSOILING - E&SC STD. SPECIFICATION 3.30
STRIPPING, PRESERVING, AND REUSING THE TOP LAYER OF EXISTING SOIL IN ORDER TO OBTAIN MORE DESIRABLE GROWTH MEDIUM.
TEMPORARY SEEDING: E&S STD. & SPEC. 3.31
ALL AREAS DISTURBED BY CONSTRUCTION THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A PERIOD OF MORE THAN 30 DAYS WILL BE
STABILIZED WITH TEMPORARY SEEDING. UNLESS OTHERWISE SPECIFIED, TEMPORARY SEEDING WILL BE DONE WITH A SEED MIX APPROVED BY
THE OWNER PRIOR TO APPLICATION IN ACCORDANCE TO E&S STD. AND SPEC. 3.31 OF THE 1992 VIRGINIA EROSION AND SEDIMENT
CONTROL HANDBOOK, THIRD EDITION (1992).
PERMANENT SEEDING: E&S STD. & SPEC. 3.32
ALL AREAS DISTURBED BY CONSTRUCTION WILL BE STABILIZED WITH PERMANENT SEEDING IMMEDIATELY FOLLOWING THE CONCLUSION OF
CLEARING OPERATIONS. UNLESS OTHERWISE SPECIFIED, PERMANENT SEEDING WILL BE DONE WITH A SEED MIX APPROVED BY THE OWNER
PRIOR TO APPLICATION IN ACCORDANCE TO E&S STD. AND SPEC. 3.32 OF THE 1992 VIRGINIA EROSION AND SEDIMENT CONTROL
HANDBOOK, THIRD EDITION (1992).
MULCHING - E&SC STD. SPECIFICATION 3.35
APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO THE SOIL SURFACE.
SOIL STABILIZATION BLANKETS & MATTING - E&SC STD. SPECIFICATION 3.36.
THE INSTALLATION OF A SOIL STABILIZATION MAT ON A PREPARED PLANTING AREA OF STEEP SLOPE.
DUST CONTROL - E&S STD. & SPEC. 3.39
DUST CONTROL PRACTICES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND
REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY BE HARMFUL OR INJURIOUS TO HUMAN HEALTH, WELFARE, OR SAFETY, OR
TO ANIMAL OR PLANT LIFE.
MANAGEMENT STRATEGIES
1. CONSTRUCTION WILL BEGIN AS SOON AS SOON AS A PRE -CONSTRUCTION MEETING HAS BEEN HELD WITH CITY SITE INSPECTOR.
2. CONSTRUCTION WILL BE SEQUENCED SO THAT GRADING OPERATIONS CAN BEGIN AND END AS QUICKLY AS POSSIBLE.
3. AREAS WHICH ARE OUTSIDE THE CONSTRUCTION LIMITS AND NOT TO BE DISTURBED SHALL BE CLEARLY MARKED.
4. TREE PROTECTION SHALL BE INSTALLED BEFORE ANY GRADING ACTIVITIES COMMENCE AND BEFORE EQUIPMENT AND MATERIAL
STORAGE AREAS ARE ESTABLISHED.
5. SEDIMENT TRAPPING MEASURES SHALL BE INSTALLED AS A FIRST STEP IN GRADING AND WILL BE SEEDED AND MULCHED IMMEDIATELY
FOLLOWING INSTALLATION.
6. MATTING AND SEEDING, WHETHER TEMPORARY OR PERMANENT, WILL FOLLOW IMMEDIATELY AFTER GRADING.
7. THE SITE CONTRACTOR SHALL BE RESPONSIBLE FOR THE INSTALLATION AND MAINTENANCE OF ALL EROSION AND SEDIMENT CONTROL
PRACTICES.
8. SOIL STOCKPILES SHALL BE STABILIZED WITH TEMPORARY SEEDING AND SILT FENCE.
9. AFTER ACHIEVING ADEQUATE STABILIZATION, THE TEMPORARY EROSION AND SEDIMENT CONTROLS WILL BE CLEANED UP AND
REMOVED AND FINAL GRADES ESTABLISHED ACCORDING TO THE GRADING PLAN FOR THE PROJECT.
MAINTENANCE
IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY AND AFTER EACH SIGNIFICANT RAINFALL. THE
FOLLOWING ITEMS WILL BE CHECKED IN PARTICULAR:
1. THE INLET PROTECTION WILL BE CHECKED REGULARLY FOR SEDIMENT CLEANOUT.
2. THE GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP WHICH WOULD PREVENT DRAINAGE. IF THE GRAVEL IS
CLOGGED BY SEDIMENT, IT SHALL BE REMOVED AND CLEANED OR REPLACED.
3. THE SILT FENCE BARRIER WILL BE CHECKED REGULARLY FOR UNDERMINING OR DETERIORATION OF THE FABRIC. SEDIMENT SHALL BE
REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHES HALF WAY TO THE TOP OF THE BARRIER.
4. THE SEEDED AREAS WILL BE CHECKED REGULARLY TO ENSURE THAT A GOOD STAND IS MAINTAINED. AREAS SHALL BE FERTILIZED AND
RESEEDED AS DETERMINED NECESSARY BY THE COUNTY AGENT.
PERMANENT STABILIZATION
IMPERVIOUS AREAS WILL BE STABILIZED WITH A GRAVEL/TAR AND CHIP SURFACE OR CONCRETE. ALL OTHER DISTURBED AREAS WILL BE
STABILIZED WITH TURF PER THE REFERENCED SEEDING, FERTILIZATION, AND MULCHING STANDARDS, OR SOD.
STORMWATER RUNOFF CONSIDERATIONS
WHILE THERE WILL BE AN INCREASE IN STORM RUNOFF ASSOCIATED WITH THE PROJECT, IT IS PROPOSED TO BE MITIGATED THROUGH THE
STRATEGIC PLACEMENT OF ENGINEERED LEVEL SPREADERS AND LEVEL GRADING THAT DIVIDE PROJECT SITE WATERSHED INTO SMALLER
DRAINAGE AREAS AND CONVERT CONCENTRATED FLOW TO SHEET FLOW BACK TO THE EXISTING TERRAIN PER THE EXISTING CONDITIONS.
b. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW FROM DRAINAGE AREAS GREATER
THAN OR EQUAL TO THREE ACRES SHALL BE CONTROLLED BY A SEDIMENT BASIN. THE MINIMUM STORAGE
CAPACITY OF A SEDIMENT BASIN SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE AREA. THE OUTFALL SYSTEM SHALL, AT A
MINIMUM, MAINTAIN THE STRUCTURAL INTEGRITY OF THE BASIN DURING A TWENTY-FIVE YEAR STORM OF 24-HOUR DURATION.
RUNOFF COEFFICIENTS USED IN RUNOFF CALCULATIONS SHALL CORRESPOND TO A BARE EARTH CONDITION OR THOSE
CONDITIONS EXPECTED TO EXIST WHILE THE SEDIMENT BASIN IS UTILIZED.
7. CUT AND FILL SLOPES SHALL BE DESIGNED AND CONSTRUCTED IN A MANNER THAT WILL MINIMIZE EROSION. SLOPES THAT ARE FOUND
TO BE ERODING EXCESSIVELY WITHIN ONE YEAR OF PERMANENT STABILIZATION SHALL BE PROVIDED WITH ADDITIONAL SLOPE
STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED.
8. CONCENTRATED RUNOFF SHALL NOT FLOW DOWN CUT OR FILL SLOPES UNLESS CONTAINED WITHIN AN ADEQUATE TEMPORARY OR
PERMANENT CHANNEL, FLUME OR SLOPE DRAIN STRUCTURE.
9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED.
10. ALL STORM SEWER INLETS THAT ARE MADE OPERABLE DURING CONSTRUCTION SHALL BE PROTECTED SO THAT SEDIMENT -LADEN WATER
CANNOT ENTER THE CONVEYANCE SYSTEM WITHOUT FIRST BEING FILTERED OR OTHERWISE TREATED TO REMOVE SEDIMENT.
11. BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET
PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE
CHANNEL AND RECEIVING CHANNEL.
12, WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL
SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NONERODIBLE
MATERIAL SHALL BE USED FOR THE CONSTRUCTION OF CAUSEWAYS AND COFFERDAMS. EARTHEN FILL MAY BE USED FOR THESE
STRUCTURES IF ARMORED BY NONERODIBLE COVER MATERIALS.
13. WHEN A LIVE WATERCOURSE MUST BE CROSSED BY CONSTRUCTION VEHICLES MORE THAN TWICE IN ANY SIX-MONTH PERIOD, A
TEMPORARY VEHICULAR STREAM CROSSING CONSTRUCTED OF NONERODIBLE MATERIAL SHALL BE PROVIDED.
14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE
MET.
15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED.
16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER
APPLICABLE CRITERIA:
a. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME.
b. EXCAVATED MATERIAL SHALL BE PLACED ON THE UPHILL SIDE OF TRENCHES.
C. EFFLUENT FROM DEWATERING OPERATIONS SHALL BE FILTERED OR PASSED THROUGH APPROVED SEDIMENT TRAPPING DEVICE,
OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF -SITE PROPERTY.
d. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND
PROMOTE STABILIZATION.
e. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS.
f. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH.
17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE
TRANSPORT OF SEDIMENT BY VEHICULAR TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A PAVED OR
PUBLIC ROAD SURFACE, THE ROAD SURFACE SHALL BE CLEANED THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE
REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET
WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL
DEVELOPMENT LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES.
18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION
OR AFTER THE TEMPORARY MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM
AUTHORITY. TRAPPED SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL
BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION.
19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION
AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FOR THE STATED
FREQUENCY STORM OF 24-HOUR DURATION IN ACCORDANCE WITH THE FOLLOWING STANDARDS AND CRITERIA:
a. CONCENTRATED STORMWATER RUNOFF LEAVING A DEVELOPMENT SITE SHALL BE DISCHARGED DIRECTLY INTO AN ADEQUATE
NATURAL OR MAN-MADE RECEIVING CHANNEL, PIPE OR STORM SEWER SYSTEM. FOR THOSE SITES WHERE RUNOFF IS
DISCHARGED INTO A PIPE OR PIPE SYSTEM, DOWNSTREAM STABILITY ANALYSES AT THE OUTFALL OF THE PIPE OR PIPE SYSTEM
SHALL BE PERFORMED.
b. ADEQUACY OF ALL CHANNELS AND PIPES SHALL BE VERIFIED IN THE FOLLOWING MANNER:
(1) THE APPLICANT SHALL DEMONSTRATE THAT THE TOTAL DRAINAGE AREA TO THE POINT OF ANALYSIS WITHIN THE CHANNEL IS
ONE HUNDRED TIMES GREATER THAN THE CONTRIBUTING DRAINAGE AREA OF THE PROJECT IN QUESTION; OR
(2) (a) NATURAL CHANNELS SHALL BE ANALYZED BY THE USE OF A TWO-YEAR STORM TO VERIFY THAT STORMWATER WILL NOT
OVERALL PREVIOUSLY CONSTRUCTED MTOP CHANNEL BANKS NOR CAUSE EROSION OF CHANNEL BED OR BANKS;
AND
(b) ALL MAN-MADE CHANNELS SHALL BE ANALYZED BY THE USE OF A TEN-YEAR STORM TO VERIFY THAT STORMWATER WILL
NOT OVERTOP ITS BANKS AND BY THE USE OF A TWO-YEAR STORM TO DEMONSTRATE THAT STORMWATER WILL NOT
CAUSE EROSION OF CHANNEL BED OR BANKS; AND
(c) PIPES AND STORM SEWER SYSTEMS SHALL BE ANALYZED BY THE USE OF A TEN-YEAR STORM TO VERIFY THAT
STORMWATER WILL BE CONTAINED WITHIN THE PIPE OR SYSTEM.
C. IF EXISTING NATURAL RECEIVING CHANNELS OR PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS OR PIPES ARE NOT
ADEQUATE, THE APPLICANT SHALL:
(1) IMPROVE THE CHANNEL TO A CONDITION WHERE A TEN-YEAR STORM WILL NOT OVERTOP THE BANKS AND A
TWO-YEAR STORM WILL NOT CAUSE EROSION TO THE CHANNEL BED OR BANKS; OR
(2) IMPROVE THE PIPE OR PIPE SYSTEM TO A CONDITION WHERE THE TEN-YEAR STORM IS CONTAINED WITHIN THE
APPURTENANCES; OR
(3) DEVELOP A SITE DESIGN THAT WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK RUNOFF RATE FROM A TWO-YEAR STORM
TO INCREASE WHEN RUNOFF OUTFALLS INTO A NATURAL CHANNEL OR WILL NOT CAUSE THE PRE -DEVELOPMENT PEAK
RUNOFF RATE FROM A TEN-YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A MAN-MADE CHANNEL; OR
(4) PROVIDE A COMBINATION OF CHANNEL IMPROVEMENT, STORMWATER DETENTION OR OTHER MEASURES WHICH IS
SATISFACTORY TO THE PLAN -APPROVING AUTHORITY TO PREVENT DOWNSTREAM EROSION.
d. THE APPLICANT SHALL PROVIDE EVIDENCE OF PERMISSION TO MAKE THE IMPROVEMENTS.
e. ALL HYDROLOGIC ANALYSES SHALL BE BASED ON THE EXISTING WATERSHED CHARACTERISTICS AND THE ULTIMATE
DEVELOPMENT OF THE SUBJECT PROJECT.
f. IF THE APPLICANT CHOOSES AN OPTION THAT INCLUDES STORMWATER DETENTION HE SHALL OBTAIN APPROVAL FROM THE
LOCALITY OF A PLAN FOR MAINTENANCE OF THE DETENTION FACILITIES. THE PLAN SHALL SET FORTH THE MAINTENANCE
REQUIREMENTS OF THE FACILITY AND THE PERSON RESPONSIBLE FOR PERFORMING THE MAINTENANCE.
g. OUTFALL FROM A DETENTION FACILITY SHALL BE DISCHARGED TO A RECEIVING CHANNEL, AND ENERGY DISSIPATORS SHALL BE
PLACED AT THE OUTFALL OF ALL DETENTION FACILITIES AS NECESSARY TO PROVIDE A STABILIZED TRANSITION FROM THE FACILITY
TO THE RECEIVING CHANNEL.
In. ALL ON -SITE CHANNELS MUST BE VERIFIED TO BE ADEQUATE.
i. INCREASED VOLUMES OF SHEET FLOWS THAT MAY CAUSE EROSION OR SEDIMENTATION ON ADJACENT PROPERTY SHALL BE
DIVERTED TO A STABLE OUTLET, ADEQUATE CHANNEL, PIPE OR PIPE SYSTEM, OR TO A DETENTION FACILITY.
j. IN APPLYING THESE STORMWATER RUNOFF CRITERIA, INDIVIDUAL LOTS OR PARCELS IN A RESIDENTIAL, COMMERCIAL OR
INDUSTRIAL DEVELOPMENT SHALL NOT BE CONSIDERED TO BE SEPARATE DEVELOPMENT PROJECTS. INSTEAD, THE DEVELOPMENT,
AS A WHOLE, SHALL BE CONSIDERED TO BE A SINGLE DEVELOPMENT PROJECT. HYDROLOGIC PARAMETERS THAT REFLECT THE
ULTIMATE DEVELOPMENT CONDITION SHALL BE USED IN ALL ENGINEERING CALCULATIONS.
k. ALL MEASURES USED TO PROTECT PROPERTIES AND WATERWAYS SHALL BE EMPLOYED IN A MANNER WHICH MINIMIZES IMPACTS
ON THE PHYSICAL, CHEMICAL AND BIOLOGICAL INTEGRITY OF RIVERS, STREAMS AND OTHER WATERS OF THE STATE.
GENERAL EROSION & SEDIMENT CONTROL NOTES
1. UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE
CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT
CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS.
2. 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.
3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CONSTRUCTION.
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.
10. ALL FILL MATERIAL SHALL BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA.
11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF
ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS.
12. BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAN MAINTAINS LATERAL SUPPORT, OR ORDER TO
MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC
STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE.
13. TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS
OF SEPTEMBER TO FEBRUARY TO CONSIST A 50/50 MIX OF ANNUAL RYEGRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO
CONSIST OF ANNUAL RYE, OR MAY THROUGH AUGUST TO CONSIST OF GERMAN MILLET. STRAW MULCH IS TO BE APPLIED AT
80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE EROSION CONTROL INSPECTOR.
14. PERMANENT SEEDING, LIME, FERTILIZATION, AND MULCHING IS TO BE APPLIED TO ALL AREAS NOT PROPOSED FOR HARDSCAPE OR
BUILDING IMPROVEMENTS AS SOON AS POSSIBLE. 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
KENTUCKY 31 OR TURF -TALL FESCUE APPLIED AT 200-250 LBS/ACRE OR HYBRID BERMUDAGRASS , UNLESS OTHERWISE SPECIFIED BY
THE ARCHITECT. STRAW MULCH IS TO BE APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE EROSION
CONTROL INSPECTOR.
15. 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.
16. 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 EROSION CONTROL INSPECTOR.
CONSTRUCTION SEQUENCE
1. NOTIFY THE CITY SITE INSPECTOR 48 HOURS PRIOR TO BEGINNING CONSTRUCTION.
2. INSTALL CONSTRUCTION ENTRANCE AT LOCATION SHOWN ON PLAN ANd CLEARLY DEMARCATE THE LIMITS OF WORK.
3. INSTALL ALL PERIMETER EROSION CONTROL MEASURES SUCH AS SILT FENCE AS SHOWN ON PLANS.
4. ESTABLISH LAY -DOWN. CONSTRUCTION PARKING/STAGING. AND MATERIAL STOCKPILE AREAS IN LOCATION SHOWN ON PLANS.
5. PERFORM ANY DEMOLITION ACTIVITIES REQUIRED TO EXECUTE THE APPROVED EROSION CONTROL PLAN.
6. COMMENCE SITE CLEARING AND GRUBBING ACTIVITY. STRIP TOPSOIL AND STORE IN STOCKPILE AREA, 8' HEIGHT MAX. DISPOSE OF
DEBRIS AND ADDITIONAL SOILS APPROPRIATELY.
7. ESTABLISH NEW SITE GRADES AND STORM DRAIN INFRASTRUCTURE WITH INLET PROTECTION, CULVERT INLET PROTECTION, RIP RAP
OUTLET PROTECTION APRONS, AND LEVEL SPREADERS.
8. APPLY EROSION CONTROL MATTING ON ALL SLOPES GREATER THAN 3:1.
9. STABILIZE IMPERVIOUS SURFACES WITH GRAVEL OR PAVEMENT AND ESTABLISH TURF VEGETATION ON ALL NON -PAVED AREAS THAT
HAVE BEEN DISTURBED.
10. ONCE PERMANENT VEGETATION IS ESTABLISHED AND UPON APPROVAL OF THE ENGINEER OR LANDSCAPE ARCHITECT, SCHEDULE A
FINAL INSPECTION BY THE COUNTY EROSION CONTROL OFFICER.
11. ONCE SITE IS DEEMED STABILIZED BY THE COUNTY EROSION CONTROL INSPECTOR AND ALL CONSTRUCTION ACTIVITIES ARE
COMPLETED, RESTORE STAGING AND ACCESS AREAS TO ACCEPTABLE (PRE -CONSTRUCTION) CONDITIONS AND REMOVE ALL EROSION
CONTROL MEASURES.
SOILS INFO:
SOILS GROUP 14C - CHESTER LOAM, 7 TO 15% SLOPES
SOILS GROUP 19C - CHESTER LOAM, 7 TO 15% SLOPES
SOILS GROUP 36B - HAYESVILLE LOAM, 2 TO 7% SLOPES
SOILS GROUP 36C - HAYESVILLE LOAM, 7 TO 15% SLOPES
SOILS GROUP 371D3 - HAYESVILLE CLAY LOAM, 15 TO 25% SLOPES
SHEET INDEX
EROSION & SEDIMENT CONTROL PLAN - STAGE A
EC-1.01
EROSION & SEDIMENT CONTROL PLAN - STAGE B
EC-1.01
EROSION & SEDIMENT CONTROL DETAILS
EC-1.02
STORMWATER PLAN & DETAILS
EC-1.03
STORMWATER QUALITY CALCULATIONS
EC-1.04
waterstreetstudio
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
CX
� J'TH OF,
�' O�'c�1 A�
t
G � y
Alan G. Franklin
Lic. No. 35326
0 02-18-2020 <v,
�`rIONAL ti��~
professional seal
Mark Lieberth
project manager
Alan Franklin, PE
Carlin Tacey
project team
OAKENCROFT
RESIDENCE
project name
DOGWOOD LANE
PROPERTIES LLC
client
410 EAST WATER STREET #500
CHARLOTTESVILLE, VA 22902
project address
W PO/VSMP
project phase
NOVEMBER 15, 2019
issue date
1.02/04/2020 - ADD STEEP SLOPES TO PLAN
APPROVED
by the Albemarle County
Community Development Department
Date 2
File WP0201900070
revisions
COVER SHEET
sheet title
ECO 100
sheet number
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AK
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J _ SIOC�E / / / / / / /
/ / / / / / / / / / / / CE CONSTRUCTION ENTRANCE E&SC STD. 3.02
SILT FENCE E&SC STD. 3.06
/ INLET PROTECTION E&SC STD. 3.07
_\ /�S_ / / /� • / / / / / / / // OP OUTLET PROTECTION E&SC STD. 3.18
/ -` /� • / // / / / / / / / / / LEVEL SPREADER E&SC STD. 3.21
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BUSH DOGWOOD LANE PROPERTIES, L.L.C.
- D.B. 5025-23 0� 236 PLAT
IL 3 / /. SOIL 19C TS TEMPORARY SEEDING E&SC STD. 3.31
/ / / / PS PERMANENT SEEDING E&SC STD. 3.32
cE , WOODS / / / / / / / / / / / // - - MULCHING E&SC STD.3.35
T.M.59-35
Z / / / / / / / / / / / / // SOIL 37D3 STABILIZATION MATTING ES&C STD. 3.36
\� ECHO HILL FARM, L.L.C. /
D.B. 5018, P. 310 / yy� / / // // TP TREE PROTECTION E&SC STD. 3.38
DUST CONTROL E&SC STD. 3.39
waterstreetstudio
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
TH OP'r
Alan G. Franklin
Lic. No. 35326
�`rIONAL ti�G~
professional seal
Mark Lieberth
project manager
Alan Franklin, PE
Carlin Tacey
project team
OAKENCROFT
RESIDENCE
project name
DOGWOOD LANE
PROPERTIES LLC
client
410 EAST WATER STREET #500
CHARLOTTESVILLE, VA 22902
project address
W PO/VSMP
project phase
NOVEMBER 15, 2019
issue date
1. 02/04/2020 - ADD STEEP SLOPES TO PLAN
revisions
EROSION &
SEDIMENT CONTROL
PLAN STAGE A
sheet title
scale: 1" = 30'
EC9101
sheet number
SOILS INFO:
0
z
O
U
SOILS GROUP 14C - CHESTER LOAM, 7 TO 15% SLOPES
SOILS GROUP 19C - CHESTER LOAM, 7 TO 15% SLOPES
SOILS GROUP 36B - HAYESVILLE LOAM, 2 TO 7% SLOPES
SOILS GROUP 36C - HAYESVILLE LOAM, 7 TO 15% SLOPES
SOILS GROUP 37133 - HAYESVILLE CLAY LOAM, 15 TO 25% SLOPES
SILT FENCE,"
- - - - - O Rr- ppppppg30g.. HICK
SF TYP. ,
GU 21"
--555_____- PINE0
-= ---
SOIL 14C -----
oy— . _
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-------- LIMITS LIMITS OF
DISTURBANCE, TYP.
-------------------------- - (4.23ACRES)
LEVEL
L' I SPREE
f
LL i ••
4 /CbRLE XCELSIOR
MAT LINED SWALE
bUTLET OP
PROTECTION
j�/// /
S/n,r I I OAK SJAK ,/,,
----- --- ---------------------------------- ------ ------------ -----------47�� --- vo�na _ 57 --" - - - t�2 /�' '� TYP SF
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/ (4.23ACRES)
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--------- ------------ _--------- �� S/ OUTLET''OP �''
--565 ---- --- -'S/� PROTECTION
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- --S LS F� ,� C E CONSTRUCTION ENTRANCE E&SC STD. 3.02
------ ----- - _\ _ �jS LEVELO.
SPREADER SF SILT FENCE E&SC STD. 3.06
560" `-- --_ -----` ��-�� ��Sa•-� ,,-'—� - • IP INLET PROTECTION E&SC STD.3.07
usH DOGWOOD LANE PROPERTIES, LLC. _ _ _ _ _ - - _ _ _ - / SA QP OUTLET PROTECTION E&SC STD. 3.18
D.B. 5025-230, 236 PLAT - `�"
----------- " ---- $ILTFENCE, $OIL19C LS LEVELSPREADER E&SCSTD.22.1
-TYP. _' ti SOIL366
�TOPS9+M`NG E&SC STD. 3.30
WOODS " _ _ - - , - , T$ TEMPORARY SEEDING E&SC STD. 3.31
T.M. 59-35 v z / / SOIL 37D3 PS PERMANENT SEEDING E&SC STD. 3.32
ECHO HILL FARM, L.L.C. -
'���? �• _ y5p'' '/ \ MULCHING E&SC STD. 3.35
D.B. 5018, P. 310 ''
STABILIZATION MATTING ES&CSTD. 3.36
40 \ \ TP TREE PROTECTION E&SC STD. 3.38
,'�FSE 0/
I C ST \ CONTROL E&SC STD. 3.39
/
� `��•F=�/� i Kai* FENCE �
i \ scale, 1" = 30'
07 AM
PROPER`
O' 30' 414
waterstreetstudio
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
TH OP'r
C� fr7
Alan G. Franklin
Lic. No. 35326
o <v.
�`rIONAL ti��~
professional seal
Mark Lieberth
project manager
Alan Franklin, PE
Carlin Tacey
project team
OAKENCROFT
RESIDENCE
project name
DOGWOOD LANE
PROPERTIES LLC
client
410 EAST WATER STREET #500
CHARLOTTESVILLE, VA 22902
project address
W PO/VSMP
project phase
NOVEMBER 15, 2019
issue date
1.02/04/2020 - ADD STEEP SLOPES TO PLAN
revisions
EROSION &
SEDIMENT CONTROL
PLAN - STAGE B
sheet title
ECO 102
sheet number
""USE PLASTIC FENCING FOR TREE PROTECTION
T
3Do
Do
CLASS Al RIP RAP
(BROWN RIVERSTONE OR
LUCK CHALET)
A
PLAN VIEW
L
0°�
SEE PLAN FOR SIZING OF EACH
OUTLET PROTECTION
SECTION A -A
FILTER CLOTH
KEY IN 6"-9"; RECOMMENDED
FOR ENTIRE PERIMETER
OUTLET PROTECTION
SOURCE: VA. DSWC
18" min.
1 i i 1
i 1 1 1 1
k 3Do + La
JPIPE OUTLET TO FLAT
AREA WITH NO DEFINED
CHANNEL
SOURCE: VDOT ROAD AND BRIDGE STANDARDS
2' min.
T-
PLATE 3.09-1
Compacted Soil
<—Flow
4.5' min. —
TEMPORARY DIVERSION DIKE
ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS
QUICK REFERENCE FOR ALL REGIONS
RATE
PLANTING DATES
SPECIES
(LBS/ACRE)
SEPT. 1- FEB. 15
50/50 MIX OF ANNUAL
RYEGRASS & CEREAL
WINTER RYE
50-100
FEB. 16 - APR. 30
ANNUAL RYEGRASS
60-100
MAY 1 -AUG. 31
GERMAN MILLET
50
TEMPORARY SEEDING
FILL SLOPE SECTION
SOIL STABILIZATION MATS SHOULD
BE INSTALLED VERTICALLY
DOWNSLOPE FOR BEST RESULTS.
TOE
MAINTAIN SLOPE ANGLE
SLOPE LINING
(WET SLOPE)
TREATMENT-2 _
POLYPROPELYENE
NON -WOVEN
(NEEDLE PUNCHED)
GEOTEXTILE FILTER
CLOTH (BEHIND
TREATMENT-2)
SOIL
TABLE 3.32-D
SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA
Total Lbs.
Per Acre
Minimum Care Lawn
- Commercial or Residential M200 lbs.
Turf -Type Tall Fescue 95-100%
0-5%
0-5%
High -Maintenance Lawn 200-250 lbs.
-.Ji"a iaWywI Turf -Type Tall Fescue 100%
General Slone (3:1 or less)
�•ecue 128 lbs.
- Red Top Grass 2 lbs.
- Seasonal Nurse Crop * 20 lbs.
150 lbs.
Low -Maintenance Slope (Steeper than 3:1)
e 108 lbs.
- Red Top Grass 2 lbs.
- Seasonal Nurse Crop * 20 lbs.
Crownvetch * * _20 lbs.
150 lbs.
* Use seasonal nurse crop in accordance with seeding dates as stated below:
February 16th through April . . .................... Annual Rye
May 1st through August 15th ..................... Foxtail Millet
August 16th through October ...................... Annual Rye
November through February 15th ................... Winter Rye
** Substitute Sericea lespedeza for Crownvetch east of Farmville, Va. (May
through September use hulled Sericea, all other periods, use unhulled Sericea).
If Flatpea is used in lieu of Crownvetch, increase rate to 30 lbs./acre. All legume
seed must be properly inoculated. Weeping Lovegrass may be added to any slope
or low -maintenance mix during warmer seeding periods; add 10-20 lbs./acre in
mixes.
/ Q 5' /
f /
5,
QQ / 10 Rk9a
IF
Q
IFIF
J'
F4�p8p E R U41 F\ERl
OFj
i
DBH= DIAME
PLATE: 3.36-5T1U1K AT E
EX.- 20" DBF
RADIUS THE
ZONE
PROTECTIVI
MAXIMUM LI
CLEARING P
NOTE: SLOPE SURFACE
SHALL BE SMOOTH
PROPOSED
AND FREE OF
ROCKS, LUMPS OF
DIRT, GRASS AND
STICKS. MAT SHALL
BE PLACED FLAT
ON SURFACE FOR
PROPER SOIL
CONTACT.
DIRT SHALL BE
TAMPERED PRIOR
TO LAYING TOP
LAP OVER
BERM
TRENCH INTO BERM AND
PROGRESS DOWNSLOPE
SLOPE LINING
(DRY SLOPE)
TREATMENT-2
j .`E� BOTTOM OF FILL SLOPE
PTi
BOTTOM OF CUT SLOPE
)TTOM OF CUT SLOPE 4' OR SHOULDER
BREAK POINT
SOIL STABILIZATION BLANKET
TYPICAL TREATMENT - 1 INSTALLATION CRITERIA
SOURCE: Adapted from Installation of Straw and Fabric Filter Barriers for Sediment Control,
Sherwood & Wyant
PLATE.3.05-1
1, SET POSTS AND EXCAVATE A 4"X4"
2. STAPLE WIRE FENCING TO THE POSTS.
TRENCH UPSLOPE ALONG THE LINE
OF POSTS.
eNl i
IINI �� I �mnr-er1 Ire
• "tillllf�
3. ATTACH THE FILTER FABRIC TO THE WIRE
FENCE AND EXTEND IT INTO THE TRENCH.
4. BACKFILL AND COMPACT THE
EXCAVATED SOIL.
FLOW /
EXTENSION OF FABRIC AND WIRE INTO THE TRENCH.
CONSTRUCTION OF A SILT FENCE
PLASTIC FENCING SHALL BE 40 INCH HIGH "INTERNATIONAL ORANGE" PLASTIC
(POLYETHYLENE) WEB FENCING SECURED TO CONVENTIONAL 60-INCH TALL METAL'IT" OR
'I POSTS DRIVEN TO A MINIMUM DEPTH OF 18 INCHES ON 6-FOOT MINIMUM CENTERS. THE
FENCING SHALL BE INSTALLED AT THE LIMITS OF CLEARING. THE FENCE SHOULD HAVE THE
FOLLOWING MINIMUM PHYSICAL QUALITIES:
• TENSILE YIELD: AVERAGE 2,000 LEIS PER 4-FOOT WIDTH (ASTM D638)
• ULTIMATE TENSILE YIELD: AVERAGE 2,900 LEIS PER 4-FOOT WIDTH (ASTM D638)
• ELONGATION AT BREAK (%): GREATER THAN 1000% (ASTM D638)
• CHEMICAL RESISTANCE: INERT TO MOST CHEMICAL AND ACIDS
U
EXCESS
AT CORNERS
TOP OF
CUTSLOPE
-,-
PERSPECTIVE VIEWS
2'
I' MIN.
Igll ��
ll
ELEVATION OF STAKE AND DETAIL A
FABRIC ORIENTATION
SPECIFIC APPLICATION
THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE
INLET DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER
THAN 5%) WHERE THE INLET SHEET OR OVERLAND FLOWS (NOT
EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT
APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS
IN STREET OR HIGHWAY MEDIANS.
SII T FFNCF nRnP INI FT PRnTFCTInN
DRAINAGE SWALE DIRECTS FLOW
TO SEDIMENT BASIN
70' MIN.
3" SM-2A ASPHALT TOP COURSE
A EXISTING
L2% 2% PAVEMENT
DIVES 6" VDOT #21A
`
DIVERSION DITCH A•J AGGREGATE BASE
SIDE ELEVATION
EXISTING GROUND
70' MIN. T
I,I III�III -IIEI1
- E3� ��a��
�_ ASPHALT PAVED WASHRACK 10 MIN.
= 12%
12' MIN. EXISTING
PAVEMENT
2% 2% T
DIVERSION DITCH MIN. POSITIVE DRAINAGE 10' MIN.
WIDTH AT DESIGN WATER TO SEDIMENT
ELEVATION IS 4.0' I TRAPPING DEVICE
PLAN VIEW
MUST EXTEND FULL WIDTH
OF INGRESS AND EGRESS
OPERATION 7n' RAINI
2%_
SET WATER HYDRANT WITH
FROST PROOF HYDRANT 3'
ABOVE GRADE AND 4' OFF
EDGE OF PAVEMENT
NOTE: A MINIMUM WATER TRAP OF 1" IS REQUIRED
WITH A MINIMUM WASH HOSE DIA. OF 1.5"
SECTION A -A
PAVED CONSTRUCTION ENTRANCE
wate rst reetstu d i o
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
o0�PLTH OF vf�C
t
tJ� f9'
Alan G. Franklin
Lic. No. 35326
�r1ONAL
professional seal
Mark Lieberth
project manager
Alan Franklin, PE
Carlin Tacey
project team
OAKENCROFT
RESIDENCE
project name
DOGWOOD LANE
PROPERTIES LLC
client
410 EAST WATER STREET #500
CHARLOTTESVILLE, VA 22902
project address
W PO/VSMP
project phase
NOVEMBER 15, 2019
issue date
1.02/04/2020 - ADD STEEP SLOPES TO PLAN
revisions
EROSION &
SEDIMENT CONTROL
DETAILS
sheet title
ECO
103
sheet number
PERMANENT SEEDING
(WITH WIRE SUPPORT)
STORMWATER MANAGEMENT PLAN NARRATIVE
SOILS GROUP 14C - CHESTER LOAM, 7 TO 151 SLOPES
SOILS GROUP 19C - CHESTER LOAM, 7 TO 15% SLOPES
SOILS GROUP 36B - HAYESVILLE LOAM, 2 TO 7% SLOPES
SOILS GROUP 36C - HAYESVILLE LOAM, 7 TO 15% SLOPES
SOILS GROUP 37D3 - HAYESVILLE CLAY LOAM, 15 TO 25% SLOPES
S
-- --------
SOIO---------- '' -- -- - L 14C
PINE______________________1-01
_ SOILS DIVIDE,
---- /
--------------- --- PASTURE-
HIY- _ 24' _ - - - -
PINE -
21 ---- --- ----"" .. .. SOIL 19C
PINf
— -56L
=-/-0WK
OAK
------------------- - - - - -- __________-
______ _______
__-__ ________________-
-
-- -
-- -- ------ -
_ _ 24"
_ _ _ _.S6Q _ � � PINE
SOIL36B ---564-______
q------- ------ 565 - ---
----_- -- _
PWF `
g---------------------------- --- -`- --�Cli
HEM
- - - - - -- - - - ----- - - - - -- - -";--- -
y s� PASTURES`
r � �
ILLO
W
V In
\ \ 9 \
' O _ `\ BENCHMARK'.
' 211, / l I \ IRONANDCAPSFTT_
PINE / I ELEVATION-572.56 Ii
l I I \ 574.9 I{ O `� \\ \ 1 ` `� ♦ `� ` \
I I 48'%54' \
WHITE
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- - ' -
(yr
Zn
GUM
_ - _ _ _ _ \ 1 1
\ 1 \ I 1
g
POPLAR `, i 1_ U
LEVEL SPREADER #1d
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L.P. ELEV. 553.50
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w----------------- _` —---------" _ 'C.P.ELEV 561.50 'I ,
_ LEVEL SPREADER #2
_ _ _� \` ", _ PASTURE - (SEE TYPICAL DETAIL)
LENGTH = 22'
T.M. 59 32A / LIP ELEV. 556.00
0 2 BUS --- DOGWOODtANEPROPERTIES,L.L.C. _`->---------- `�
vL.P. ELEV. 555.50
r D. B. 5025-230, 236_PLAT ---------
SOIL
LL ---- ---""- ,?- 19C
SOIL36B
o-------- -- -----
WOODS
T.M. 59-35-
�a��l� SOIL 37D3
w A� ECHO HILL FARM, L.L.C. "
0 o D.B. 5018, P. 310
Ae�O _ 9aE cky 0' 30' I
\/CA AD f�LJA KIKICI Q CI rl(lr\ DD(-\TC(�TIr%K1 f�DITCDIA
THE PROJECT SITE SITS ON THE PEAK OF A HILL SURROUNDED BY OPEN AGRICULTURAL PASTURE. THERE USED TO
BE A RESIDENCE AND IMPROVEMENTS ON THE PROJECT SITE BUT THEY WERE PREVIOUSLY REMOVED SUCH
THAT THE EXISTING CONDITIONS ARE A COMBINATION OF TURF, PASTURE, AND LARGE SPECIMEN TREES. IN THE
EXISTING CONDITION STORMWATER SHEET FLOWS FROM THE PROJECT SITE DOWN FROM THE PEAK TO
PASTURE IN ALL DIRECTIONS. THE HOMESITE DEVELOPMENT PROPOSED WILL CREATE AN INCREASE IN
IMPERVIOUS COVER AND SUBSEQUENTLY AN INCREASE IN RUNOFF VOLUME FROM THE PROJECT WORK LIMITS.
PROPOSED SITE GRADING AROUND THE PERIMETER OF THE SITE WILL MIMIC THE EXISTING TERRAIN TO
MAINTAIN SHEET FLOW OF RUNOFF TO THE SURROUNDING PASTURE. RUNOFF FROM AREAS OF HIGHER
CONCENTRATION OF IMPERVIOUS COVER WILL BE COLLECTED IN SMALL STORM PIPES AND DISPERSED TO
CONSTRUCTED LEVEL SPREADERS AT THE PERIMETER OF THE WORK LIMITS. THEREFORE; ALL RUNOFF FROM THE
DEVELOPED PORTION OF THE PROJECT SITE WILL CONVEY AS SHEET FLOW TO EXISTING, WELL VEGETATED
AGRICULTURAL PASTURE LAND SUCH THAT THE INCREASED RUNOFF WILL NOT NEGATIVELY IMPACT
DOWN -GRADIENT PROPERTIES OR RESOURCES.
\A/ A TCD (ll I A I ITV (�(1N,ITD(ll
pee aTTacneC1 opreacineeT)
THE PROJECT LIMITS OF DISTURBANCE, 4.23 ACRES, IS LESS THAN 5.00 ACRES AND THE CALCULATED TOTAL
LOAD (TP) REDUCTION REQUIRED USING THE VRRM SPREADSHEET, 1.29 LB/YR, IS LESS THAN 10 LB/YR. THE WATER
QUALITY CONTROL PLAN FOR THE PROJECT IS TO PURCHASE CREDITS FROM AN APPROVED NUTRIENT BANK.
(SEE FOLLOWING SHEET FOR WATER QUALITY CALCULATIONS)
NYLOPLAST TURF TRAFFIC INSTALLATION
12"-30" DRAIN BASIN
FRAME & GRATEGOUD COVER
TOP SOIL �
MINIMUM PIPE BURIAL
DEPTH PER PIPE
MANUFACTURER
RECOMMENDATION
1. GRATES/SOLID COVERS SHALL MEET H-20 LOAD RATING FOR
30' PEDESTRIAN & 12'- 301 STANDARD & SOLID
AOII OTDI INII INIG r%MAILI
&' MIN THICKNESS GUIDELINE
TRAFFIC LOADS: CONCRETE SLAB DIMENSIONS
ARE FOR GUIDELINE PURPOSES ONLY ACTUAL
CONCRETE SLAB MUST BE DESIGNED TNUNG INTO
CONSIDERATION LOCAL SOIL CONDITIONS, TRAFFIC
LOADING, & OTHER APPLICABLE DESIGN FACTORS.
THE BACKFILL MATERIAL SHALL BE CRUSHED STONE OR OTHER
GRANULAR MATERIAL MEETING THE REQUIREMENTS OF CLASS II
MATERIAL AS DEFINED IN ASTM D2321, OR AS DETERMINED BY LOCAL
STANDARDS& SITE ENGINEER. BEDDING& BACKFILL FOR SURFACE
DRAINAGE INLETS SHALL BE PLACED & COMPACTED UNIFORMLY IN
ACCORDANCE WITH ASTM D2321.
NYLOPLAST BASIN - TYP. DETA
FLOW -
UPHILL GRADE TO DITCH LENGTH & ELEVATION AS
OR CULVERT OUTLET SHOWN ON PLAN
8' TYP.
1). 4
VDOT #1 STONE
OVER FILTER FABRIC
(12" DEPTH)
LEVEL SPREADER - TYP. SECTION
EXISTING
GRADE
waterstreetstudio
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
�o��PLTH OF vt� �r .
r
� v
Alan G. Franklin
Lic. No. 35326
�`t'ICNAL ti�G~
professional seal
Mark Lieberth
project manager
Alan Franklin, PE
Carlin Tacey
project team
OAKENCROFT
RESIDENCE
project name
DOGWOOD LANE
PROPERTIES LLC
client
410 EAST WATER STREET #500
CHARLOTTESVILLE, VA 22902
project address
W PO/VSMP
project phase
NOVEMBER 15, 2019
issue date
1.02/04/2020 - ADD STEEP SLOPES TO PLAN
revisions
STORMWATER
MANAGMENT PLAN
sheet title
sheet number
DEQ Virginia Runoff Reduction Method New Development Compliance Spreadsheet - Version 3.0
2011 BMP Standards and Specifications 2013 Draft BMP Standards and Specifications
Project Name:
Date:
BMP Design Specifications List: 2011 Stds & Specs
Site Information
Oakencroft Residence
11/1/2019
Post -Development Project (Treatment Volume and Loads)
r ....a rrt...,..- 1....-...-1
A Soils
B Soils
C Soils
D Soils
Totals
Forest/Open Space (acres) -- undisturbed,
rotected forest/open sace or reforested
0.00
0.00
Managed Turf (acres) -- disturbed, graded
for ards or other turf to be
3.59
3.59
Impervious Cover (acres)
0.64
0.64
4.23
(constants
Annual Rainfall (inches)
43
Target Rainfall Event (inches)
1.00
Total Phosphorus (TP) EMC (mg/L)
0.26
Total Nitrogen (TN) EMC (mg/L)
1.86
Target TP Load (lb/acre/yr)
0.41
Pj (unitless correction factor)
0.90
Land Cover Summary
Runoff Coefficients (Rv)
CLEAR ALL
(Ctrl+Shift+R)
A Soils
B Soils
C Soils
D Soils
Forest/Open Space
0.02
0.03
0.04
0.05
Managed Turf
0.15
0.20
0.22
0.25
Impe rvious Cover
0.95
0.95
0.95
0.95
TP Load Reduction Required (lb/yr) 1 1.29
Forest/Open Space Cover (acres)
0.00
Weighted Rv (forest)
0.00
% Forest
0%
Managed Turf Cover (acres)
3.59
Weighted Rv (turf)
0.20
% Managed Turf
85%
Impervious Cover (acres)
0.64
Rv (impervious)
0.95
% I mpervi ous
15%
Site Area (acres)
4.23
Site Rv
0.31
TT DEVELOPMENT
Treatment Volume and Nutrient Loads
Treatment Volume
0.1105
(acre-ft)
Treatment Volume (cubic feet)
4,813
TP Load (lb/yr)
3.02
TN Load Ib r
( /y)
21.63
(Informational Purposes Onl
fires
Date: February 4, 2020
To: Dorothy Batten
Dogwood Lane Properties, LLC
410 East Water Street #500
Charlottesviille, Va 22902
From: Caitlan Parker
Credit Sales Coordinator
Resource Environmental Solutions
Subject: James River Watershed -Nutrient Credit Availability
Project Reference: Oakencroft Farm Residence; 1.29 Credits Requested; HUC
02080204
This letter is to confirm the availability of 1.29 authorized nutrient credits ("Nutrient
Credits") from Resource Environmental Solutions' ("RES") Seven Islands Nutrient
Bank facility for use by permit applicants within the James River watershed, including
HUC 02080204, to compensate for nutrient loadings in excess of state or local
regulations, as per Virginia Code § 62.1-44.15:35 and § 62.1-44.19:14 and Virginia
Administrative Code 9 VAC 25-820-10 et seq. These Nutrient Credits are generated
and managed under the terms of the Banking Instruments known as the Seven Islands
Nutrient Reduction Implementation Plan.
Please feel free to contact me if you have any questions.
Sincerely,
Caitlan B. Parker
Resource Environmental Solutions
cparker@res.us
data input cells
constant values
calculation cell
10055 Red Run Blvd
Suite 130
Owings Mills, MD
21117
412 N. 4th St.
Suite 300
Baton Rouge, LA
70802
701 E. Bay St.
Suite 306
Charleston, SC
29403
5020 Montrose Blvd
Suite 650
Houston, TX
77006
1200 Camellia Blvd
Suite 220
Lafayette, LA
70508
1371/2 East Main St
Suite 210
Oak Hill, WV
25901
33 Terminal Way
Suite 431
Pittsburgh, PA
15219
302 Jefferson St
Suite 110
Raleigh, NC
27605
1408 B Roseneath Rd
Richmond, VA
23230
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T.M.59-_"_:-'��� 7 VRRM LAND USE KEY (POST-DEV)
eusr DOGwooD-LAN-E PROPERTIES, L.L.C. `
D.B. 5025-230, 236 PLAT- - - - - - - _ _ _ -
7 r
SOIL 19C L . LIMITS OF DISTURBANCE 4.23 ACRES
$OIL 368" L
w�w '' f MANAGED TURF, HSG B 3.59 ACRES
T.M. 59-35 SOIL 37D3-
pZm ECHO HILL FARM, L.L.C.
,R P ` 5 ' IMPERVIOUS COVER, HSG B 0.64 ACRES
r'e6SOILS INFO r
r SOILS GROUP 14C -CHESTER LOAM, 7 TO 15°k SLOPES � �;; ` ,' Ph, / 4�� \ � scale: 1" = 40'
SOILS GROUP 19C - CHESTER LOAM, 7 TO 15% SLOPES��; £N
r SOILS GROUP 36B - HAYESVILLE LOAM, 2 TO 7% SLOPES .,
SOILS GROUP 36C - HAYESVILLE LOAM, 7 TO 15% SLOPES
SOILS GROUP 37D3 - HAYESVILLE CLAY LOAM, 15 TO 25% SLOPES - 0' 40'
waterstreetstudio
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
o �P�,TH OF 17�
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Alan G. Franklin
Lic. No. 35326 0,
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NAL ,
professional seal
Mark Lieberth
project manager
Alan Franklin, PE
Carlin Tacey
project team
OAKENCROFT
RESIDENCE
project name
DOGWOOD LANE
PROPERTIES LLC
client
410 EAST WATER STREET #500
CHARLOTTESVILLE, VA 22902
project address
W PO/VSMP
project phase
NOVEMBER 15, 2019
issue date
1.02/04/2020 - ADD STEEP SLOPES TO PLAN
revisions
STORMWATER
QUALITY PLAN
sheet title
SWO101
sheet number