HomeMy WebLinkAboutWPO202000024 Plan - VSMP 2020-04-20EROSION & SEDIMENT CONTROL NARRATIVE E&SC MEASURES & QUANTITIES VICINITY MAP: 1" = 2000'
PROJECT DESCRIPTION
THE PURPOSE OF THIS PROJECT IS THE CONSTRUCTION OF A LARGE SINGLE FAMILY RESIDENCE, POOL, POOL HOUSE, GARAGE, BARN, AND
SUPPORTING PARKING AND CIRCULATION FACILITIES ON A PARCEL CREATED BY THE COMBINATION OF T.M.P. 59-37C4 AND 59-37D. THE
TOTAL OF THE COMBINED PARCELS IS 23.67 ACRES, AND THE PROJECT LIMITS, OR LIMITS OF DISTURBANCE, IS 4.30 ACRES. THERE WAS
PREVIOUSLY A RESIDENTIAL STRUCTURE ON T.M.P. 59-37D BUT IT HAS BEEN REMOVED. THERE WILL BE AN INCREASE OF IMPERVIOUS AREA
WITHIN THE WORK LIMITS FROM 0 SQUARE FEET TO 32,658 SQUARE FEET AS A RESULT OF THE CONSTRUCTION. STORM RUNOFF FROM THE
PERIMETER OF THE DEVELOPED SITE WILL BE CONVEYED VIA SHEET FLOW TO THE ADJACENT PASTURES/WOODLAND AND FROM THE CENTER
OF THE SITE VIA SMALL DIAMETER STORM PIPES AND SWALES THAT TERMINATE WITH ENGINEERED LEVEL SPREADERS THAT ARE INTENDED TO
ENCOURAGE SHEET FLOW BACK TO THE PASTURES/WOODLAND.
THE PROJECT START DATE IS JULY 1, 2020 AND THE ANTICIPATED CONSTRUCTION DURATION IS 20 MONTHS.
PROJECT OWNER
EAST GRACE, LLC
817 MONTROSE AVE
CHARLOTTESVIILLE, VA 22902
EXISTING SITE CONDITIONS
THE EXISTING SITE IS A MODERATELY SLOPING HAYFIELD/PASTURE AND WOODLAND SURROUNDED BY SIMILARLY SIZED LARGE RESIDENTIAL
PROPERTIES.
ADJACENT PROPERTY
THE PROPERTY IS SURROUNDED BY SIMILARLY SIZED AGRICULTURAL/RESIDENTIAL PROPERTIES.
SOILS
THE USDA WEB SITE CLASSIFIES THE SOILS OF THE SITE AREA AS ASHE LOAMS AND HAYSEVILLE 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.
INLET PROTECTION - E&SC STD. SPECIFICATION 3.07
SILT FENCE PROTECTION OR EXCAVATED IMPOUNDING AREA INSTALLED AT THE STORM DRAIN DROP INLETS AS SHOWN ON PLANS.
CULVERT INLET PROTECTION - E&SC STD. SPECIFICATION 3.08
SILT FENCE PROTECTION INSTALLED AT THE ENTRANCE TO CULVERTS AS SHOWN ON PLANS.
TEMPORARY DIVERSION DIKE - E&SC STD. SPECIFICATION 3.09
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.
SUBSURFACE DRAIN- E&SC STD. SPECIFICATION 3.28
A PERFORATED CONDUIT SUCH AS PIPE, TUBING, OR TILE INSTALLED BENEATH THE GROUND TO INTERCEPT AND CONVEY GROUNDWATER.
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).
SODDING - E&SC STD. SPECIFICATION 3.33
STABILIZING FINE GRADED DISTURBED AREAS WITH SOD.
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.
CE
CONSTRUCTION ENTRANCE E&SC STD. 3.02 2 EA
STATE MINIMUM STANDARDS
1. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER FINAL GRADE IS
$F
SILT FENCE E&SC STD. 3.06 1,330 LF
REACHED ON ANY PORTION OF THE SITE. TEMPORARY SOIL STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS
THAT MAY NOT BE AT FINAL GRADE BUT WILL REMAIN DORMANT FOR LONGER THAN 14 DAYS. PERMANENT STABILIZATION SHALL BE
0P)
INLET PROTECTION E&SC STD. 3.07 8 EA
APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR.
CIP
CULVERT INLET PROTECTION E&SC STD. 3.07 16 EA
2. DURING CONSTRUCTION OF THE PROJECT, SOIL STOCKPILES AND BORROW AREAS SHALL BE STABILIZED OR PROTECTED WITH SEDIMENT
TRAPPING MEASURES. THE APPLICANT IS RESPONSIBLE FOR THE TEMPORARY PROTECTION AND PERMANENT STABILIZATION OF ALL SOIL
OP
OUTLET PROTECTION E&SC STD. 3.18 6 EA
STOCKPILES ON SITE AS WELL AS BORROW AREAS AND SOIL INTENTIONALLY TRANSPORTED FROM THE PROJECT SITE.
�$
LEVEL SPREADER E&SC STD. 3.21 3 EA
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
$D
SUBSURFACE DRAIN E&SC STD. 3.28 1,024 LF
ENOUGH TO SURVIVE AND WILL INHIBIT EROSION.
T�
TOPSOILING E&SC STD. 3.30 0.75 AC
4. SEDIMENT BASINS AND TRAPS, PERIMETER DIKES, SEDIMENT BARRIERS AND OTHER MEASURES INTENDED TO TRAP SEDIMENT SHALL BE
CONSTRUCTED AS A FIRST STEP IN ANY LAND -DISTURBING ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE LAND
T$
TEMPORARY SEEDING E&SC STD. 3.31 0.75 AC
DISTURBANCE TAKES PLACE.
PS
PERMANENT SEEDING E&SC STD. 3.32 0.25 AC
5. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES AND DIVERSIONS IMMEDIATELY AFTER
INSTALLATION.
$�
SOD E&SC STD. 3.33 0.50 AC
6. SEDIMENT TRAPS AND SEDIMENT BASINS SHALL BE DESIGNED AND CONSTRUCTED BASED UPON THE TOTAL DRAINAGE AREA TO BE
MULCHING E&SC STD. 3.35 0.25 AC
SERVED BY THE TRAP OR BASIN.
a. THE MINIMUM STORAGE CAPACITY OF A SEDIMENT TRAP SHALL BE 134 CUBIC YARDS PER ACRE OF DRAINAGE
B/
STABILIZATION MATTING ES&C STD. 3.36 4,000 SF
AREA AND THE TRAP SHALL ONLY CONTROL DRAINAGE AREAS LESS THAN THREE ACRES.
b. SURFACE RUNOFF FROM DISTURBED AREAS THAT IS COMPRISED OF FLOW FROM DRAINAGE AREAS GREATER
TP
TREE PROTECTION E&SC STD. 3.38 1,000 LF
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
DUST CONTROL E&SC STD. 3.39 4.00 AC
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
rrr rr�usR
" N
Br oo��ley P�
�O
2 SITE
e» o
m
0
Flordon D�
- _ old*-�"r - o
IVYROAD
2000 ft Ivy Rd
GENERAL
EROSION
& SEDIMENT
CONTROL
NOTES
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
1.
UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES WILL BE
STABILIZING MEASURES UNTIL THE PROBLEM IS CORRECTED.
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.
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.
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.
9. WHENEVER WATER SEEPS FROM A SLOPE FACE, ADEQUATE DRAINAGE OR OTHER PROTECTION SHALL BE PROVIDED.
3.
ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CONSTRUCTION.
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.
4.
A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES.
11. BEFORE NEWLY CONSTRUCTED STORMWATER CONVEYANCE CHANNELS OR PIPES ARE MADE OPERATIONAL, ADEQUATE OUTLET
5.
PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS( INCLUDING, BUT NOT
PROTECTION AND ANY REQUIRED TEMPORARY OR PERMANENT CHANNEL LINING SHALL BE INSTALLED IN BOTH THE CONVEYANCE
LIMITED TO, OFF -SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO
CHANNEL AND RECEIVING CHANNEL.
THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING AUTHORITY.
12. WHEN WORK IN A LIVE WATERCOURSE IS PERFORMED, PRECAUTIONS SHALL BE TAKEN TO MINIMIZE ENCROACHMENT, CONTROL
6.
THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT
SEDIMENT TRANSPORT AND STABILIZE THE WORK AREA TO THE GREATEST EXTENT POSSIBLE DURING CONSTRUCTION. NONERODIBLE
EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY.
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.
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.
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.
8.
DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE.
14. ALL APPLICABLE FEDERAL, STATE AND LOCAL REGULATIONS PERTAINING TO WORKING IN OR CROSSING LIVE WATERCOURSES SHALL BE
9.
THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF PRODUCING RAINFALL
MET.
EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE
IMMEDIATELY.
15. THE BED AND BANKS OF A WATERCOURSE SHALL BE STABILIZED IMMEDIATELY AFTER WORK IN THE WATERCOURSE IS COMPLETED.
10.
ALL FILL MATERIAL SHALL BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA.
16. UNDERGROUND UTILITY LINES SHALL BE INSTALLED IN ACCORDANCE WITH THE FOLLOWING STANDARDS IN ADDITION TO OTHER
APPLICABLE CRITERIA:
11.
ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF
a. NO MORE THAN 500 LINEAR FEET OF TRENCH MAY BE OPENED AT ONE TIME.
ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS.
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,
12.
BORROW, FILL OR WASTE ACTIVITY SHALL BE CONDUCTED IN A SAFE MANNER THAN MAINTAINS LATERAL SUPPORT, OR ORDER TO
OR BOTH, AND DISCHARGED IN A MANNER THAT DOES NOT ADVERSELY AFFECT FLOWING STREAMS OR OFF -SITE PROPERTY.
MINIMIZE ANY HAZARD TO PERSONS, PHYSICAL DAMAGE TO ADJACENT LAND AND IMPROVEMENTS, AND DAMAGE TO ANY PUBLIC
d. MATERIAL USED FOR BACKFILLING TRENCHES SHALL BE PROPERLY COMPACTED IN ORDER TO MINIMIZE EROSION AND
STREET BECAUSE OF SLIDES, SINKING, OR COLLAPSE.
PROMOTE STABILIZATION.
e. RESTABILIZATION SHALL BE ACCOMPLISHED IN ACCORDANCE WITH THESE REGULATIONS.
13.
TEMPORARY STABILIZATION SHALL BE TEMPORARY SEEDING AND MULCHING. SEEDING IS TO BE AT 75 LBS/ACRE, AND IN THE MONTHS
f. APPLICABLE SAFETY REGULATIONS SHALL BE COMPLIED WITH.
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
17. WHERE CONSTRUCTION VEHICLE ACCESS ROUTES INTERSECT PAVED OR PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE
80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE EROSION CONTROL INSPECTOR.
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
14.
PERMANENT SEEDING, LIME, FERTILIZATION, AND MULCHING IS TO BE APPLIED TO ALL AREAS NOT PROPOSED FOR HARDSCAPE OR
REMOVED FROM THE ROADS BY SHOVELING OR SWEEPING AND TRANSPORTED TO A SEDIMENT CONTROL DISPOSAL AREA. STREET
BUILDING IMPROVEMENTS AS SOON AS POSSIBLE. PERMANENT STABILIZATION SHALL BE LIME AND FERTILIZER, PERMANENT SEEDING,
WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER. THIS PROVISION SHALL APPLY TO INDIVIDUAL
AND MULCH. AGRICULTURAL GRADE LIMESTONE SHALL BE APPLIED AT 90LBS/1000SF, INCORPORATED INTO THE TOP 4-6 INCHES OF
DEVELOPMENT LOTS AS WELL AS TO LARGER LAND -DISTURBING ACTIVITIES.
SOIL. FERTILIZER SHALL BE APPLIED AT 1000LBS/ACRE AND CONSIST OF A 10-20-10 NUTRIENT MIX. PERMANENT SEEDING SHALL BE
TURF -TALL FESCUE APPLIED AT 200-250 LBS/ACRE, UNLESS OTHERWISE SPECIFIED BY THE ARCHITECT. STRAW MULCH IS TO BE
18. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION
APPLIED AT 80LBS/100SF. ALTERNATIVES ARE SUBJECT TO APPROVED BY THE EROSION CONTROL INSPECTOR.
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
15.
MAINTENANCE: ALL MEASURES ARE TO BE INSPECTED WEEKLY AND AFTER EACH RAINFALL. ANY DAMAGE OR CLOGGING TO
BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION.
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
19. PROPERTIES AND WATERWAYS DOWNSTREAM FROM DEVELOPMENT SITES SHALL BE PROTECTED FROM SEDIMENT DEPOSITION, EROSION
FENCE AND DIVERSION DIKES WHICH ARE COLLECTING SEDIMENT TO HALF THEIR HEIGHT MUST BE CLEANED AND REPAIRED
AND DAMAGE DUE TO INCREASES IN VOLUME, VELOCITY AND PEAK FLOW RATE OF STORMWATER RUNOFF FOR THE STATED
IMMEDIATELY.
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
16.
ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE REMOVED WITHIN 30 DAYS OF FINAL SITE STABILIZATION,
NATURAL OR MAN-MADE RECEIVING CHANNEL, PIPE OR STORM SEWER SYSTEM. FOR THOSE SITES WHERE RUNOFF IS
WHEN MEASURES ARE NO LONGER NEEDED, SUBJECT TO APPROVAL BY THE EROSION CONTROL INSPECTOR.
DISCHARGED INTO A PIPE OR PIPE SYSTEM, DOWNSTREAM STABILITY ANALYSES AT THE OUTFALL OF THE PIPE OR PIPE SYSTEM
SHALL BEPERFORMED.
CONSTRUCTION
f�
SEQUENCE
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
1.
NOTIFY THE EROSION CONTROL INSPECTOR 48 HOURS PRIOR TO BEGINNING CONSTRUCTION.
ONE HUNDRED TIMES GREATER THAN THE CONTRIBUTING DRAINAGE AREA OF THE PROJECT IN QUESTION; OR
2.
INSTALL CONSTRUCTION ENTRANCES AT LOCATIONS SHOWN ON PLAN AND CLEARLY DEMARCATE THE LIMITS OF WORK.
(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;
3.
INSTALL ALL PERIMETER EROSION CONTROL MEASURES SUCH AS SILT FENCE AND DIVERSIONS AS SHOWN ON PLANS.
AND
(b) ALL MAN-MADE CHANNELS SHALL BE ANALYZED BY THE USE OF A TEN-YEAR STORM TO VERIFY THAT STORMWATER WILL
4.
ESTABLISH LAY -DOWN, CONSTRUCTION PARKING/STAGING, AND MATERIAL STOCKPILE AREAS IN LOCATION SHOWN ON PLANS.
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
5.
PERFORM ANY DEMOLITION ACTIVITIES REQUIRED TO EXECUTE THE APPROVED EROSION CONTROL PLAN.
(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.
6.
COMMENCE SITE CLEARING AND GRUBBING ACTIVITY. STRIP TOPSOIL AND STORE IN STOCKPILE AREA, & HEIGHT MAX. DISPOSE OF DEBRIS
C. IF EXISTING NATURAL RECEIVING CHANNELS OR PREVIOUSLY CONSTRUCTED MAN-MADE CHANNELS OR PIPES ARE NOT
AND ADDITIONAL SOILS APPROPRIATELY.
ADEQUATE, THE APPLICANT SHALL:
(1) IMPROVE THE CHANNEL TO A CONDITION WHERE A TEN-YEAR STORM WILL NOT OVERTOP THE BANKS AND A
7.
ESTABLISH NEW SITE GRADES AND STORM DRAIN INFRASTRUCTURE WITH INLET PROTECTION, CULVERT INLET PROTECTION, RIP RAP OUTLET
TWO-YEAR STORM WILL NOT CAUSE EROSION TO THE CHANNEL BED OR BANKS; OR
PROTECTION APRONS, AND LEVEL SPREADERS.
(2) IMPROVE THE PIPE OR PIPE SYSTEM TO A CONDITION WHERE THE TEN-YEAR STORM IS CONTAINED WITHIN THE
APPURTENANCES, OR
8.
APPLY EROSION CONTROL MATTING ON ALL SLOPES GREATER THAN 3:1.
(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
9.
STABILIZE IMPERVIOUS SURFACES WITH GRAVEL OR PAVEMENT AND ESTABLISH TURF VEGETATION ON ALL NON -PAVED AREAS THAT HAVE
RUNOFF RATE FROM A TEN-YEAR STORM TO INCREASE WHEN RUNOFF OUTFALLS INTO A MAN-MADE CHANNEL; OR
BEEN DISTURBED.
(4) PROVIDE A COMBINATION OF CHANNEL IMPROVEMENT, STORMWATER DETENTION OR OTHER MEASURES WHICH IS
SATISFACTORY TO THE PLAN -APPROVING AUTHORITY TO PREVENT DOWNSTREAM EROSION.
10.
ONCE PERMANENT VEGETATION IS ESTABLISHED AND UPON APPROVAL OF THE ENGINEER OR LANDSCAPE ARCHITECT, SCHEDULE A FINAL
d. THE APPLICANT SHALL PROVIDE EVIDENCE OF PERMISSION TO MAKE THE IMPROVEMENTS.
INSPECTION BY THE COUNTY EROSION CONTROL OFFICER.
e. ALL HYDROLOGIC ANALYSES SHALL BE BASED ON THE EXISTING WATERSHED CHARACTERISTICS AND THE ULTIMATE
DEVELOPMENT OF THE SUBJECT PROJECT.
11.
ONCE SITE IS DEEMED STABILIZED BY THE COUNTY EROSION CONTROL INSPECTOR AND ALL CONSTRUCTION ACTIVITIES ARE COMPLETED,
f. IF THE APPLICANT CHOOSES AN OPTION THAT INCLUDES STORMWATER DETENTION HE SHALL OBTAIN APPROVAL FROM THE
RESTORE STAGING AND ACCESS AREAS TO ACCEPTABLE (PRE -CONSTRUCTION) CONDITIONS AND REMOVE ALL EROSION CONTROL
LOCALITY OF A PLAN FOR MAINTENANCE OF THE DETENTION FACILITIES. THE PLAN SHALL SET FORTH THE MAINTENANCE
MEASURES.
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.
h. 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.
SOILS INFO:
SOILS GROUP 4E - ASHE LOAM, 25 TO 45% SLOPES
SOILS GROUP 36B - HAYESVILLE LOAM, 2 TO 7% SLOPES
SOILS GROUP 36C - HAYESVILLE LOAM, 7 TO 15% SLOPES
SHEET INDEX
EROSION & SEDIMENT CONTROL PLAN - STAGE A
EC.101
EROSION & SEDIMENT CONTROL PLAN - STAGE B
EC.101
EROSION & SEDIMENT CONTROL DETAILS
EC.102
STORMWATER MANAGEMENT PLAN
SW.100
STORMWATER CALCULATIONS & DETAILS
SW.101
wate r s t reetst u d i o
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
H OF
4_e
. �Gl�.J��,�C- �v
Alan G. Franklin
17� Lic. No. 35326 w
O 04-17-2020 w
c� J 417 O
NAL
professional seal
Bill Mauzy
project manager
Alan Franklin, PE
Jessie Calder
project team
CHRISTOPHER
-SHILLING RESIDENCE
project name
TANNER SHILLING &
SALLY CHRISTOPHER
client
1220 ZAC K LANE
CHARLOTTESVILLE, VA 22902
project address
VSMP
project phase
MARCH 25, 2020
issue date
revisions
COVER SHEET
sheet title
Ec* 100
sheet number
10
WOODS
55 -8 BR�W- C ALET\\
ST0N�OW L �P \ sus \
PR�EC 10\ \
SOILS DIVIDE, \ / / / 1 �� / \ \ �\ \ \(F V. X40'Ot)�\TYP.3OiLs361 MITOFLEVELD1ST RB CE, TW \ SRREA3 Lo \\
_ 5_-8" BRQWI EHAtT / 53 \ (4.3� C ES) — \ \� \ \ N H -`� 3'\
STONES�UTLE� � N\ 40
`� \ � ` / V � � .BERM LE . 5 .0 \ A
(INV. 535.0) \ //\\ 5��/ �j S= SF \ \
LEVEL -SPREADER
TREADER #4 /
// -EENGTH 30'
BERP. ELIE ELEV-.5350 _ \ -5&SF
R YP. \ /��o MATERIAL \\�
5L.35 STOCKPILE
TIRE
15„Dst-
S11 T�
� C
\ \ /EN�E, 5 0 --f — — ' �— — SF— SF — / / / �\ / , 6 e% 545
-- --
F
0 //D/S/U
(4. f TIXP.�CL f7 7�m7ups) / 0 TO M /PS
s — \
T(CRIES) C5
27" 0 BOXWOOD
545 WILLOW LL552 \
HD� / 6" HDP S`
ST EP S OPES (>25%) \A� �/ j MAG — / IP _ /� I ��� J`C 18" R ETA I N I N G i
TO �E PRES RVED \ \ I Ic ASH � WALLS, TYP.
w ` 550
` —;?,Fr' Q
� _ RESIDENCE
IC 12" __FFE 555.5
I C MAP J�
� CEO
STAGING �`� e9'
/—� LAWN —�_—
AREA / � � � � , � TEMP.
ILL MAG /
U) I I --
TEMP. OP -DIKE ( DDIVERS�N
\ l / O � -- � —
J\�I OUTLET /- \
_ PROTECT106N / 555 — — IP
1P i 1P
6" PE 6" HDPE HDPE / 6
77T-
TI
J 3\
CED J
. 'o \ /
F
3" 0
CED
SOILS DIVIDE,
TYP.
T.M. 59-37C2
LOT4
MARGARET DEER BRODIE WILLIAMS
D.B. 4892-698
D.B. 2853-99 THRU 706 PLAT
\ I
INV= `
554.06 /
30'ACCESS EASEMENT
(D.B. 2001-103 & D.B. 739-698)
SOILS INFO:
SOILS GROUP 4E - ASHE LOAM, 25 TO 45% SLOPES
SOILS GROUP 36B - HAYESVILLE LOAM, 2 TO 7% SLOPES
SOILS GROUP 36C - HAYESVILLE LOAM, 7 TO 15% SLOPES
BENCHMARK.'
IRON & CAP SET
ELEV=549.87
SOILS DIVIDE,
TYP.
TM. 59-37C4
LOT 6
EASTGRACE, LLC
D.B. 5038-360
D.B. 2853-99 THRU 706 PLAT
STEEP SLOPES (>25%)
TO BE PRESERVED
WOODS
5''-8'' BROWN CHALET
STONE OUTLET OP
PROTECTION
(INV. 546.0)
E &S C 411111,111
EAS U
R
ES
.`
CE
CONSTRUCTION ENTRANCE
E&SC STD. 3.02 \
SF
SILT FENCE
E&SC STD. 3.06
IP
INLET PROTECTION
E&SC STD. 3.07
CIP
CULVERT INLET PROTECTION
E&SC STD. 3.07
OP
OUTLET PROTECTION
E&SC STD. 3.18
LS
LEVEL SPREADER
E&SC STD. 3.21
SD
SUBSURFACE DRAIN
E&SC STD. 3.28
TO
TOPSOILING
E&SC STD. 3.30
TS
TEMPORARY SEEDING
E&SC STD. 3.31
PS
PERMANENT SEEDING
E&SC STD. 3.32
SO
SOD
E&SC STD. 3.33
MULCHING
E&SC STD. 3.35
g�M
STABILIZATION MATTING
ES&C STD. 3.36
TP
TREE PROTECTION
E&SC STD. 3.38
DUST CONTROL
E&SC STD. 3.39
STEEP SLOPES (>25%)
TO BE PRESERVED
" BROWN CHALET
NE OUTLET
YTECTION OP
535.0)
LEVEL LS
SPREADE #1
LENGTH = 26'
BERM ELEV. 532.0
L.P. ELEV. 531.5
` TEEP SL�PES 25�`
\� CULV RT I� L \ \ V O B�RESRVE� VA
w a t e r s t reetst u d i o
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
�ALTH OF _
o� GIG
t
Alan G. Franklin
Lic. No. 35326 W
NAL
professional seal
Bill Mauzy
project manager
Alan Franklin, PE
Jessie Calder
project team
CHRISTOPHER
-SHILLING RESIDENCE
project name
TANNER SHILLING &
SALLY CHRISTOPHER
client
1220 ZAC K LANE
CHARLOTTESVILLE, VA 22902
project address
VSMP
project phase
SOILS 36C ` \� \ CED
CCU
\ ®A �, MARCH 25, 2020
CEDV A \ \ \ 4\ \ \ V A V A \ \\ sSo A \ /�' issue date
W FH \ \ \ \ \ 9„ \ C \ \
` -- � \ ` QED
I \ \ \ C 24 \ \
r V A \ \ \ \L cE\��
\ \ V A TP
PED
revisions
\ \ 1"DBL \ \� EROSION &
� \CED � �\ \ \
\ \ \ \ \ \ ,,� \ SEDIMENT CONTROL
\ \ C PLAN - STAGE A
T.M. 5O9-;C5 sheet title
C \\ RAN LAND TRUST
30„ Sj0
/ D.B.B. 3094-302
\CED \ �� \ \ D.B. 2853-99 THRU 106 PLAT
scale: 1" = 30'
\ V \ 0' 30'
sheet number
C�
0
m
w
Q
z
J
d
J
O
Z
O
LU
w
06
Z
O
0
w
WOODS
-8 BRO\W- Ci�ALET\\
STON�OW L �P
_ i / / \ \
5
/ - // ' \ / \ � E 40'0) \ \\ \
EL \.
�IMITS O / \ \\ \ \ \
5_-8" BR_OW-I�-ET � �5g � DIST,URBAN E, TYP / / / � - \ \ \ \ \ SFNEA�R 33 \�
STONE-TLE� \� (4.3�A ES % / / \ V \ BE TLE . 5 .0_kO
(IN � ) / 'X SorES/5� // / SF E SV\539.5
5� / NSF ---�s \
LEVEL _ _ -_ / / \/ \ /i� - -\ \ \ \ \ \ E&SC MEASURES \
TREADER #4
-tfNGT Imo-- 30' \\ / / / \ �\ \ CE CONSTRUCTION ENTRANCE E&SC STD. 3.02
_BERM ELF 535:0 _ �S1LT NC / ��° / \ S.c \ \ \ \
L.P_ELE34�s _ _ =�� SF T� j SILT FENCE E&SC STD. 3.06535
/ TP / -- / / / / \ / \ l \ / I BENCHMARK.'
INLET PROTECTION E&SC STD. 3.07 \�
/ // / / THE - I �� / / / / / \ \s \ \ \ \ IROLEV CAP 549.87T IP
// / R�C TE�ON / /j \ CIP CULVERT INLET PROTECTION E&SC STD. 3.07 \
TYP O
TM. 59-37C4 O
OUTLET PROTECTION E&SC STD. 3.18
LEVEL SPREADER E&SC STD. 3.21
LOT 6 Ls
D.B. 5038-360 SUBSURFACE DRAIN E&SC STD. 3.28
�/ / // shp S SF SF / / / / / -- - \ \ \ \ \ \ ( D.B. 2853-99 THRU 706 PLAT $ D
TOPSOILING E&SC STD. 3.30
545
/ / 36' TO MU PS / \ \ \ \ T$ TEMPORARY SEEDING E&SC STD. 3.31
OAK \ /� T MU PS � \ \ \
�4, \ ✓ / / / s TO U \ \ \ CED P$ PERMANENT SEEDING E&SC STD. 3.32
II 0 550 \ \ V �' $� SOD E&SC STD. 3.33
- 545 / 27" / / / SO
�2� WILLOW \ \ \ WOODS U
6" H IP SSA \ \ 5"-8" BROWN CHALET MULCHING E&SC STD. 3.35
/ \ \ I / \ \ \ STONE OUTLET B�
/ LIMNS OF i , \ / \ STABILIZATION MATTING ES&C STD. 3.36
\ � \ � � PROTECTION
/ DISTURBANC ,TYP. \ , _ r J r r / \ OP
INV. 546.0
(4.3 A�RES) � \ � � � -� � w � \ � / � i � 6-F� ( ) TP TREE PROTECTION E&SC STD. 3.38
Q 0 \ ` PER EV L LS
SPRE DUST CONTROL E&SC STD. 3.39
\ -- G
/ / 1 POOL _ - _ J _ N SO �� \ - \ GTH = 26' STEEP SLOPES (>25%)
hi I�FBERM V.546.0
_ RESIDENCE s° \ L.P2ELEV. 45.5 \ TO BE PRESERVED
I / �� \ - J _-FFE 555.5 STAG"`�" \ CED 12„ \ \ \
/ _ C IP AREA \ \ 12" CED
\ I _ \ 12" CED TR \
� \ CED SOILS 4E DBL
_ \SIL FEN\�
/ I � \ � / / / � \ � CED 9R � � CED 6„ '� _ � TYP
mOU I \ _ / _ = I \ \ a �, , TR �_ ��� \ SF \� - BROWN CHALET
\ 18" TREE \ S
6 �, 6" SF so \ ST NE OUTLET
/ 0 \ / \ \ S \ TREE CED 72" CED \ \ \ \
I-DPAR TECTION OP
�gg/ / TO \ SO CED \ 6„ CED 6„ WC �u �
�- SOILS J � � � � 0 � � � � IP � � 0 V A \ � CED ACED \� CED � � \ � A V 1ir� 535.0)
POOL HOU E\ O / 6 P IP / - 6 SO \ \ \ \ \� LEVEL L�S
C a❑ 4 I \ HD O _ O \ \ \ \ SPREADER#1
FFE 547.5 ' - _ / IP \ 3� \\ \ \ �S \ s \ �\ \ LENGTH = 26'
( SQI LS B \
SSBERM ELEV. 532.0
z SUB RFACE \\ 5A5 �2 \ SS \\ L.P. ELEV. 531.5
36 - S \
1 1 I\I )A \ 18„ \ - -- / S DRAI \ \ 55 p\
�\ TR
0 27' a
\ \ \ V A V I 1 u I MAP
\ A \ TREE (� 15„ 12' CED ® � �\ \ V A \ \ \
\ • \ P R TI O N / I TREE I 75" / 15" TRl
\ \ T I l l CED CED CED / �' '� \ \ \�\ - PLVERT IT L E
\ \ / �-
PT I / DBH/18R� \ \ \ \ \ \\ ClCI INV.-A2 0 \ \ \ \ \\ \
\ - WO
I
.� o \ \\ 0 12" 7 548. 12" ROW OF CEDARS / TP_%/ \ \ \ \ I
V \ MAP \ HDPE V CI TP TREE � / � gV_ / � I \ \ \ \� V A \� N \ \ \
INV= O SF 560 / ^ I o S "-8" BROWN CHALET \ \ F E 5�.5 I
\ 3" \ o \ \ 49.01I I PROTECTION S �� o I h \ 60 ST E OUTLET \ \ � �
\ � \ \\ \ \
.o�O �} �� ED J o I \ \ 27" / � \ � TYP. /��-� �4'DL1AP' R L_ � ,.� \ �PR�O TION\ OP
'F�T \� ) \ IS \ CED \ \ I B/ MU \ SIN 5�)
DBLCED I I l / / \\ / / ( / \ O S7,2
/ 1TR
\ \ \\ \\\ \ \
cED �� \ I \ / \ a / RB o / / \�`-�i� '� - �� `� \ SOILS 36B \ \ \ ,_
72" --- - --� \ DISTU BAN�I ISORF \ \ \ D
/ 118„ l \ 12 TRl / PA VED - - \ ( \ \
\ o I l / R� / - \ \ \4.3 AGES) \ \ \\ \ \ \ \ \ \\ \ / MAP 9" R� �� \ �� 24 \ \ \ \
DW
,(\ TRI
75" / DWl \ s / ,�� / V� \ TEEP SLOPES ( Z5.RooA iuMITs of \ a ��wRfi IN�r \ �T ARE RT.M.59-37C2 a / / o \ ^ DISTURBANCE TYP. \ \ CIP PROTECTION \ \ O B \ \ \ \ \ \ \\ \ \
LOT4 12" o � ,� 4.3 ACRES ` "\ \ \ \
MARGARETDEER BRODIE WILLIAMS y� / 24" I RB 72" / \ / SILT FENCE, ( ) \ \ S6 O (INV. 559.0) \ \ \ \ \ O S DIVI
D.B. 4892-698 I I WP I / / RB/ 'C \ / / TYP. \ \ \ S \ \ \
D.B. 2853-99 THRU 106 PLAT ,( I � � \ \ \ \ \ \ \ \ \ \ \ \ �T I
75" ACCESS EASEMENT
RB \ / r� (D.B. 2975--740) \ \ \ \ \ \ \ \ \ \\ \\ \ \ \\ \
LO
\� / CONSTRUCTION
\ \ / lNv= ENTRANCE #2 CE \ \ \ \ \ \ \\ \ \
.! 556.11 O APPROXIMATE ST�S\
LOCATION OF \ 27� \ \
WATEXISTING 20'
ERLINEEA MENT /DBL a \ �_ �O I LS 36C
INV= 15" \\
(D.B. 768 166 PLAT) \ CED \
554.06 � � CMP
/ J / T.M.59-37C3 CONSTRUCTION \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \\ \ \ \
REVISED LOT5 C E ENTRANCE # 1
KA Y LEIGH FERGUSON TRUST o � I,y
D.B. 4435-163, 171 & 172PLAT \ \ I \ \ \ \ \ \ \ \ \ T \ \ \ 18"
D.B. 3725-626
D.B. 2858-207 \ \ \ ® \ \ i
D.B. 2853-99 THRU 106 PLAT \ I \ \ \ \ \ \ \ \ \4 \ \ \ \ED \\
T \ \ \ \ \ \ CED
PAVED \ \ \ I \ \ \ \ �
\ \ \ \ \ PO \ \ \s'-o
/ ZACK LANE \ \ \ \ \ \ \ \ \ \ \ \ \ \
ENT
(D.B. 2001-103 & DESS SBM739--698)
\ \ \ \ \ \ \
\ \ \\ \ \ \ \ \CED \
` \ \ \ \ T.M. 59-37C5
RANKIN LAND TRUST
\ 30" \ S�0 \ \ \
\ \ \ D.B. 3094 302
\CED D.B. 2853-99 THRU 106 PLAT
scale: 1" = 30
w a t e r s t reetst u d i o
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
'ACTH OF _
off' GI�c�
t
Alan G. Franklin
Lic. No. 35326 W
NAL
professional seal
BIII Mauzy
project manager
Alan Franklin, PE
Jessie Calder
project team
CHRISTOPHER
-SHILLING RESIDENCE
project name
TANNER SHILLING &
SALLY CHRISTOPHER
client
1220 ZAC K LANE
CHARLOTTESVILLE, VA 22902
project address
VSMP
project phase
MARCH 25, 2020
issue date
revisions
EROSION &
SEDIMENT CONTROL
PLAN - STAGE B
sheet title
sheet number
SOURCE: ADAPTED from VDOT Standard Sheets and Va. DSWC
PLATE. 3.08-1
**USE PLASTIC FENCING FOR TREE PROTECTION
L TOE OF FILL
O
o o SILT FENCE 0
DISTANCE IS U MINIMUM IF FLOW
IS TOWARD EMBANKMENT
* FLOW
OPTIONAL STONE COMBINATION
1.0' 1.5'
FLOW
2.5'
VDOT #3, #357, #5, #56 OR #57 COARSE AGGREGATE CLASS I RIPRAP
TO REPLACE SILT FENCE IN " HORSESHOE " WHEN
HIGH VELOCITY OF FLOW IS EXPECTED
CULVERT INLET PROTECTION
DETAIL (N.T.S.)
NYLOPLAST TURF TRAFFIC INSTALLATION
12" - 30" DRAIN BASIN
FRAME & GRATFJSOLID COVER
TOPSOIL
MINIMUM PIPE BURIAL
DEPTH PER PIPE
MANUFACTURER
RECOMMENDATION
4' MIN ON 12.- 24"
8'MINON30"
1. GRATESISOLID COVERS SHALL MEET H-20 LOAD RATING FOR
30" PEDESTRIAN & 12"- 30" STANDARD & SOLID
12" - 30" INLINE DRAIN
8' MIN THICKNESS GUIDELINE
TRAFFIC LOADS: CONCRETE SLAB DIMENSIONS
ARE FOR GUIDELINE PURPOSES ONLY. ACTUAL
CONCRETE SLAB MUST BE DESIGNED TAKING 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. DETAIL
FLOW
UPHILL GRADE TO DITCH
OR CULVERT OUTLET
7.5' TYP.
1.5'
ELEVATION AS
SHOWN ON PLAN
3:1 MAX.
\/
TURF/SOD
6'
CAI
LEVEL SPREADER - TYP. DETAIL
2'-3'
T
3Do
III
Do
CLASS Al RIP RAP
(BROWN RIVERSTONE OR
LUCK CHALET)
A
PLAN VIEW
SEE PLAN FOR SIZING OF EACH
OUTLET PROTECTION
W 3Do + La
PIPE OUTLET TO FLAT
AREA WITH NO DEFINED
CHANNEL
�L
0°� A—
I\\IIII 2' min.
SECTION A -A
FILTER CLOTH
KEY IN 6%9"; RECOMMENDED —
FOR ENTIRE PERIMETER
OUTLET PROTECTION
SOURCE: VA. DSWC
18" MIN WIDTH
GUIDELINE
BOTTOM FLANGE OF
FRAME MUST BE
SUPPORTED BY
CONCRETE COLLAR
LENGTH & ELEVATION AS
SHOWN ON PLAN
7\\
BROWN VDOT #1 STONE
OVER FILTER FABRIC
(12" DEPTH)
PLATE 3.09-1
r`mmnnrfnrl Cnil
4.5' min.
TEMPORARY DIVERSION DIKE
SOURCE: VDOT ROAD AND BRIDGE STANDARDS
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
EXISTING
GRADE
TEMPORARY SEEDING
TABLE 3.32-D
FILL SLOPE SECTION
SOIL STABILIZATION MATS SHOULD
BE INSTALLED VERTICALLY
Q
/
DOWNSLOPE FOR BEST RESULTS.
Q 5' /
/ Q
/
A
Q
410
Q � o Pv
,�4_
O
Q
\
p s„
FRCgp
Q tvQ
�
lio
IIII II'
-------------
TOE
MAINTAIN SLOPE ANGLE
SLOPE LINING
(WET SLOPE)
TREATMENT-2 _
POLYPROPELYENE
NON -WOVEN
PLASTIC FENCING SHALL BE 40 INCH HIGH "INTERNATIONAL ORANGE" PLASTIC
(POLYETHYLENE) WEB FENCING SECURED TO CONVENTIONAL 60-INCH TALL METAL "T" OR
"U" 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 LBS PER 4-FOOT WIDTH (ASTM D638)
• ULTIMATE TENSILE YIELD: AVERAGE 2,900 LBS PER 4-FOOT WIDTH (ASTM D638)
• ELONGATION AT BREAK (%): GREATER THAN 1000% (ASTM D638)
• CHEMICAL RESISTANCE: INERT TO MOST CHEMICAL AND ACIDS
DBH= DIAMETER OF TREE 3—
PLATE: 3.36-5TRUNK
AT BREAST HEIGHT
EX.- 20" DBH YIELDS 20' MIN.
RADIUS TREE PROTECTION
ZONE
PROTECTIVE DEVICE
MAXIMUM LIMITS OF
CLEARING AND GRADING
MIN. R=DBH
x 1 FT
NOTE: SLOPE SURFACE
IN FEET
SHALL BE SMOOTH
PROPOSED GRADING
AND FREE OF
ROCKS, LUMPS OF
mom 0
DIRT, GRASS AND
ft,0
STICKS. MAT SHALL
i
BE PLACED FLAT
/At
ON SURFACE FOR
PROPER SOIL
CONTACT.
kWr y� �1
CONSTRUCTION
OPERATIONS RELATIVE
DIRT SHALL BE
TAMPERED PRIOR
TO LAYING TOP
LAP OVER
BERM
TRENCH INTO BERM AND
PROGRESS DOWNSLOPE
TOP OF
SLOPE LINING CUT SLOPE
(DRY SLOPE)
(NEEDLE PUNCHED) ill OWN TREATMENT-2
GEOTEXTILE FILTER 11= ISI SooRC��ERI
CLOTH (BEHIND _il, A, pgOVERIp.OV�F
TREATMENT-2) 1T' OF
I�I
SOIL % BOTTOM OF FILL SLOPE
I�V /BLEi
BOTTOM OF CUT SLOPE _
BOTTOM OF CUT SLOPE 4' OR SHOULDER
BREAK POINT
SOIL STABILIZATION MATTING
SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA
Total Lbs.
Per Acre
Minimum Care Lawn
- Commercial or Residential
=200 lbs.
- Turf -Type Tall Fescue
95-100%
0-5 %
0-5%
High -Maintenance Lawn
200-250 lbs.
- Turf -Type Tall Fescue
100%
General Slope (3:1 or less)
- ue
128 lbs.
- Red Top Grass
2 lbs.
- Seasonal Nurse Crop *
20 lbs.
150 lbs.
Low -Maintenance Slope Steeper than 3:1)
-66@6cue
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.
SLOPE INSTALLATION
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.
I
I
ll
I
FLOW
3. ATTACH THE FILTER FABRIC TO THE WIRE
FENCE AND EXTEND IT INTO THE TRENCH.
4. BACKFILL AND COMPACT THE
EXCAVATED SOIL.
FLOW G
EXTENSION OF FABRIC AND WIRE INTO THE TRENCH.
CONSTRUCTION OF A SILT FENCE
INME
IIII
V MIN.
i I
I�
v
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.
SILT FENCE DROP INLET PROTECTION
DRAINAGE SWALE DIRECTS FLOW
TO SEDIMENT BASIN
70' MIN.
3" SM-2A ASPHALT TOP COURSE
A EXISTING
2% 2% PAVEMENT
-11-1
�IHII III=III Ill o
DIVERSION DITCH A
SIDE ELEVATION AGGREGATE BASE
EXISTING GROUND
70' MIN.
,IIiIIiI
ASPHALT PAVED WASHRACK 10' MIN.
Ill
III- �
lily 2%
12 MIN. EXISTING
PAVEMENT
/ 2% 2%
DIVERSION DITCH MIN.y POSITIVE DRAINAGE 10' MIN.
WIDTH AT DESIGN WATER TO SEDIMENT
III ELEVATION IS 4.0' I TRAPPING DEVICE
PLAN VIEW
MUST EXTEND FULL WIDTH SET 1y" WATER HYDRANT WITH
OF INGRESS AND EGRESS FROST PROOF HYDRANT 3'
OPERATION 70' MIN. ABOVE GRADE AND 4' OFF
EDGE OF PAVEMENT
2%�
IIIIIIIIIIII—III-� IIIIII—III III=III=
NOTE: A MINIMUM WATER TRAP OF 1" IS REQUIRED
WITH A MINIMUM WASH HOSE DIA. OF 1.5"
SECTION A -A
PAVED CONSTRUCTION ENTRANCE
w a t e r s t r e e t s t u d i o
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
(Alan
LTH OF� G. Franklin. No. 35326 w � 6
NAL
professional seal
Bill Mauzy
project manager
Alan Franklin, PE
Jessie Calder
project team
CHRISTOPHER
-SHILLING RESIDENCE
project name
TANNER SHILLING &
SALLY CHRISTOPHER
client
1220 ZAC K LANE
CHARLOTTESVILLE, VA 22902
project address
VSMP
project phase
MARCH 25, 2020
issue date
revisions
EROSION &
SEDIMENT CONTROL
DETAILS
sheet title
PERMANENT SEEDING
(WITH WIRE SUPPORT)
•
sheet number
1
0
3
WOODS
�-8" BRO CH LE\T\ \ \ \ sus \
STO\NE OUT ET \ \\ \ \
PROTECTION (INV.540.0o \\
LIMITS OF / / / / \ \ \ \ �n\ \
5'- ' WN CHALET / DISTURBANCE, TW / \ \ \ �\
STONE OUTLET — _ , 530 (4.3 AC ES) LEVEL REA ER #3 \ \\
PROTECTION / / \ SEE TY C%LTA \
(INV. 535-A) / / / / / } + \ LENGTH = 113,'\ \ \
LEVEL SPREADE # — — — / / / / / / / / T� \++ + ++ + + +\ + +\ + + L.P.EELEV 5 90 0 \ \ \
_ (SEE TYPICAL DETAIL)_
+ + + + + + + + + + +
LENGTH - 30'
-LIP ELEV. 535.00 _ + +� /
L.P. ELEV. 534.50--535
SOILS INFO:
SOILS GROUP 4E - ASHE LOAM, 25 TO 45% SLOPES
SOILS GROUP 36B - HAYESVILLE LOAM, 2 TO 7% SLOPES
SOILS GROUP 36C - HAYESVILLE LOAM, 7 TO 15% SLOPES
VRRM LAND USE KEY (POST-DEV) \�
LIMITS OF DISTURBANCE 4.30 ACRES
E I `
+ + + ++ MANAGED TURF, HSG B 3.55 ACRES \.
IMPERVIOUS COVER, HSG B 0.75 ACRES
TM. 59-37C4
LOT 6
EASTGRACE, LLC
D.B. 5038-360
D.B. 2853-99 THRU 706 PLAT
CULVERT B
BROWN CHALET
ST NE OUTLET
D
P\R TECTION
++ + + ++\+ + ++ + ++ + \ 535.0)
+ + 4 + + + \
+ + +
++ + + + + + + ++ + + + + I+ + + + + + ++ ++ ++ + ++ ++ + + +�- + + + �+ \ \� \k � + + PREADER #1
+ + + + + + + + + + + + + + + + ++ + + + ++ + ++ + ++ + ++ + + + + + +++ + + � + \ + + +�+++\+++ �\ +\ + + + }� ++ + + +\ (SEE TYPICAL DETAIL)
LENGTH =26'
1 1 \ + + + ELEV. 532.0
10136„ + + + + + + } + / + + + + + + } + + + + + + + + + + +
+ + + + + + + + + + + ---� + \ \ + L.P. ELEV. 531.5
OA�TR + + + + + + + + + + + + + + + + ++ ++ ++ + ++ + ++ + ++ + + + ++ ++ +� + + ++ + +'++ + + + ++ + ++ + + + ++ + + SStO \++++++}++
\ + + + + + + + + + + + + + + + + + h + + + + + + + + + + + + + + + + + + + + ++ + + ++ +
\ + + + + + + + + +/+o ++ ++
+ + ++ + ++ + ++ + ++ + ++ r E� ++ ++ ++ ++ + + C
++ +/ ++ ++1�'+ + + �+� +-p++ +
\ + + + + + + + + + + + + + + + + + + + +
O 12"
(° MAP
+ + +INV= + + + + + + + + + + + + + + +
\ 3 +t�
A ♦ ♦ / CED \ \ 27„ + + + + + + + + + + +
00 CED + + + + + + + + + + + + + + + + + + + + + + +�� +- =++ ++ 4i1/2 + + ++ + D.A. TO LS #1 \ \ ++ ++ + ++\ ++ \ ++ + ++ } +
I +
+ + + + + + + + + + + + + + + + \ + + + +�+ ��+ } + + + + + + MAp + + + + + + + + \ 8< CULVERT \ + + \+ \ \
+ + + + + + + + + + + + +
+++ + +++ ++ ++ +++ + ++ + + c=0.43 ++++ +++ +++ +++
+ + 0.85 A�
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + I \
DBL+ + + + + + + + + + + + + +
!/�F \C � I CED + ++ + ++ ++ ++ ++ + ++ + + + + + + �� + + ++ + + + + + + + ++ }+++ \� ++ ++ + + + + + + + + + + + + \ \ + + + + + + + + + + + + \
+ + + + +
+ + \ + + + + o + + + + + + / + + + + + + + + + + \
TR
CED + �+ + ++ + ++ + + +++O�tS 31�6+ ++ ++ + + \
Q10- 1.92 cFs \ \ \ \ \ \ \ \ \ \
k� ♦♦ + ++ + ++ + ++ + ++ ++ + ++ ++ Rk PAVED \ + + + + + + + +
O + + + +� + + + l2 + + + f>
MAP + + + ++ +\+ + + + �+ R� + } RB
18" + + +�\+ + + \� + + + + + + + I++ +� \ \ \ \ \\ \ \ \ \\ \\ \
+
+++++++++ ++ +++++++ QED
Qw \ \ \ \ \ \ \ \\\ \ \ \\ \\ \\
+ 15••/ DW
T.M. 59-37C2 ♦/` l a / Ro ° \/ ++ + / LIMITS OF \ �` + \+� + ++ + ++ ++ + ++I+ +++ \ CULVERT A \ \ \ \ \ \ LIMITS O� \ \ \ \ \\ \
LOT4/ / D + } + , DISTURBANCE, TYP. \\ \ \ \ \ \ \ \ \ \ \ D13 ACRES TYP. \\ \ \\ \\ \
MARGARETDE RBRODIEWILLIAMS l 24 / RB °/ /12^ ++/ + ' (4.3 ACRES) ♦♦ ++ + + ++ s6 + + ++ ++ \ ( ), \ \
D.B. 4892698 �'P I RB/ + ++ D.A. TO CULVERT A
D.B. 2853-99 THRU 706 PLAT + i \ + +
ACCESS EASEMENT c = 0.64 \ \ + } +++ + +++ +++ \ \ \ \ \ \ \ \ \ \ \ \ \\ \\ \ \ \ \
7 Q10_
RB ,� (D.B. 2975--740) tc = 6.76 MINS.
\ ♦ / / INV= APPROXIMATE \ ++ U \ \ \ \ \ \ \ \ AS
/ ss6.11 LOCATION OfEXISTING �� + + ++ + '� \ SOIL\36C ® 27\
/♦♦ I _ WATERLINEEA�MENT \\ + + +/DBL®\ �- \ \
INV= i 15" (D.B.768-766PLAT) \ Y \ CED \ \ \ \ \ \ \ \ \ \ \\ ss0 \ \ \ \
554.06 / T.M. 59-37C3 \ o \ \ \ \ \ \ \ \ \ \ \ \ \\ \\ \ \
REVISED LOTS \ \ \ \ \ \ \ \ \ \ \ \ \ \ \
KA Y LEIGH FERGUSON TRUST o � W fH 9\
Q D. B. 4435-163, 177 & 772 PLATEL
J
LU
z
w
C�
Q
z
LU
Q
O
Cn
0
w
w
0
0
Q
U
i
U
Q
w
U
w
0
07
i
WOODS
5"-8" BROWN CHALET
STONE OUTLET
PROTECTION (INV. 546.0)
LEVEL SPREADER #2
Y CAL )
LENGTH = 26'
+ + + + + + + + + + + + + LI V.546.00
+ } + + + + + + + + + + + + + + + L.P.7" .545.50
+ + + + + + + + + + + + + + + + + + + + + }\+ + + + + + + �+ + + ,.� + + + + + + + + + + + + + + + + + CED
+ + + + + + ++ ++ ++ ++ +1+� + + + ++ ++ ++ + ++++++ \ + + +++ \ \ 12„
l + + +
-c 0.46+ ++ 12" CE
TR D
4„ 9„
++ ++ ++++ ++++ +++ ++I+ ++ +I++ ++ + ++ ++ } + + --r + 9", 12" CED TR
+ + + + + + + + + + + + + +
+ + + + + + + + + + 7+ + + + + + + + Q i=+ 32 GPS + + + + + + + + + + + + + + +
+ =— ++ ++ ++\ ++ +\+ + \ CED SOILS 4E DBL 1 �
/ / + ! + + +�+ +'A'TR
+ + + + + + + + + + + + + + + + + + + +CED 6"
+ + + + + 4""
r1_
CED 9" TR
TREE+ + + + + + + + + + + + + + + 18'-
TREE CED 6„
CED 12"" CE
CED
6" + 6"
+ + + + + Q Q + + + + + + + + + + + + + + +
+ + + + \ WC
6„ CED
CED +�+
0 + CED
+ + + ++'b + ���. b�M,I + + ++ ++
+\ +\+ ++ + +
p
/ +} + + + + + + + \ + + } + \ \ BENCHMARK.'
++ +\+ \ \ IRON&CAP SET
ELEV=549.87
+ + + + + + + + + + + +
// / // ���++}+�++ } ++++++++++}+ + + ++�+
In
545+ + + + + + + + + + + + + + + \ \ \ \\
+ + + + + + + + + + + + +
LIMITS/OF / + } + + + + + + + + + + +}�+ + } + + + + + + + + + + �� ++ + ++ + ++ + + + + + ++ TO+(LS+ + ++ ++ + +
/ DISTURBANCE . } + } + + + + } + } + } +
/ TYP U. +A++ +++ + + CED
+ + + + + + + + + + + 550 + + + + + + + + + + +
5 I +} ++ 5�5}++ ++} ++++ wlL�bw
\ + + + 0
1 + + ++ ++ + +} + }+ +++ +
++
} + ++ } ++ + +i55+ + ++ ++ + + ++ + + + + \ + + PER
+ + + + + + + + + + + } + + + \ + + \Ft
D.B. 3725--626
/ D.B. 2858-207
D.B. 2853-99 THRU 106 PLAT \ I \ \ \
PAVED � \ � V A � � TP V A � \ \ CED
I \ \ ADPED \ \ \ \ \\ \ \ \ s \ \
ZACKLANE \ \ \ \ \
STORMWATER ANAGEMENT PLAN NARRATIVE 30'ACCESSEASEMENT \ r �� \ �, \
(D.B. 2001-103 & D.B. 739-698) \ \ �` \ \ \ \ \ \ \ \ \ � �s �
VSMP CH NNEL & FLOOD PROTECTION CRITERIA \ \ \ \ \ \ \ \ \
THIS PROJECT P OPOSES THE CONSTRUCTION OF A LARGE SINGLE FAMILY RES RTING PARKING AND CIRCULATION FACILITIES ON A PARCEL CREATED BY THE \ �%
COMBINATI N OF T.M.P. 59-37C4 AND 59-37D. THE TOTAL OF THE COMBINED PARCELS IS 3.67 ACRES, AND THE PROJECT LIMITS, OR LIMITS OF DISTURBANCE, IS 4.30 ACRES. THERE USED TO BE A RESIDENCE AND \ \ \ \ \ \ \"
IMPROVEMENT ON THE PROJECT SITE BUT THEY WERE PREVIOUSLY REMOVED SUCH THAT THEE STING CONDITIONS ARE COMBINATION OF TURF, PASTURE, LARGE SPECIMEN TREES, AND WOODLAND. IN THE EXISTING \ \ \ \ \ \ \ \ \ \ cE� \
CONDITION, STORMWATER SHEET FLOWS FROM THE PROJECT SITE DOWN THROUGH THE PAST ES TO THE WOODLAND SURROUNDING THE PASTURES. THE DEVELOPMENT PROPOSED WILL CREATE A MANAGEABLE \ �% \ \ \ \ \ \ \ \ \ \ \ \
INCREASE IN IMPERVIOUS COVER AND SUBSEQUENTLY A MANAGEABLE INCREASE IN RUNOFF AK/VOLUME FROM THE: PROJECT WORK LIMITS. PROPOSED SITE GRADING AROUND THE PERIMETER OFTHE SITE WILL MIMIC THE EXI TING TERRAIN TO MAINTAIN SHEET FLOW OF RUNOFF TO THE SURROUNDING PASTU . 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 \ \` \ ®� \ \ \ \ \ T.M. � ;C5
EXIST NG, WELL VEGETATED AGRICULTURAL PASTURE LAND AND WOODED LAND SUCH THA�T�THE INCREASED R NOFF WILL NOT NEGATIVELY IMPACT DOWN -GRADIENT PROPERTIES OR RESOURCES. \ \ \ '
\ 30" S�0 \ \ \ RANKIN LAND TRUST
WATER QUA ITY CONTROL.\ `�\�\ CED \ , \ \ D.B.9THRU2
� , D.B. 2853-99 THRU 106 PLAT
(See attached Spreadhee) \ \ \ \ �If scale: 1" = 30'
THE PROJECT LIMITS OF DISTURBANCE, 4.30 ACRES, IS LESS THAN 5.00 ACRES AND THE CALCULATED TOTAL LOA (TP) REDUC ION REQUIRED USING THE VRRM SPREADSHEET, 1.48 LB/YR, IS LESS THAN 10 LB/YR. THE WATER \ \
QUALITY CONTR L PLAN FOR THE PROJECT IS TO PURCHASE CREDITS FROM AN APPROVED NUTRIENT BANK OR PLACE A F ORTION OF THE PARCEL IN FOREST/OPEN SPACE EASEMENT IF CREDITS ARE NOT AVAILABLE.01
w a t e r s t r e e t s t u d i o
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
H Op
f
Alan G. Franklin
Lic. No. 35326
NAL
professional seal
Bill Mauzy
project manager
Alan Franklin, PE
Jessie Calder
project team
CHRISTOPHER
-SHILLING RESIDENCE
project name
TANNER SHILLING &
SALLY CHRISTOPHER
client
1220 ZACK LANE
CHARLOTTESVILLE, VA 22902
project address
VSMP
project phase
MARCH 25, 2020
issue date
revisions
STORMWATER
MANAGEMENT PLAN
sheet title
sheet number
Project Name:
Date:
BMP Design Specifications List: 2011 Stds & Specs
Site Information
East Grace Residence
1/27/2020
Post -Development Project (Treatment Volume and Loads)
Land Cover (acres)
A Soils
B Soils
C Soils
D Soils
Totals
Forest/Open Space (acres) -- undisturbed,
0.00
protected forest/open sace or reforested
Managed Turf (acres) -- disturbed, graded
for yards or other turf to be
3.55
3.55
Impervious Cover (acres)
0.75
0 75
4.30
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
Runoff Coefficients (RA
data input cells
constant values
calculation cells
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
Impervious Cover
0.95
0.95
0.95
0.95
Watershed ID: Culvert A
Drainage Area:
0.12
Acres
c-factor:
0.64
(see worksheet)
tc:
6.76
mins. (see worksheet)
0(2):
0.36
cfs
Q(10):
0.47
cfs
0(25):
0.53
cfs
Time of Concentration Worksheet
Overland Flow Time
Source: Seelye Chart as modified in VDOT Drainage Manual (Fig.
1.5.1.1 on Page 1-13E)
Notes:
1) Length of overland flow always <= 200 ft
2) Calculate a separate Tc for each ground cover condition along the flow path
46.00 Enter Length of Strip (ft) Sample "C" values:
7.00 Enter Slope (% or ft/100ft) 0.22 Dense grass
0.28 Enter Rational Method "C" value 0.28 Average grass
0.36 Poor grass
6.65 Result Tc (minutes) 0.48 Bare soil
0.90 Pavement
Shallow Concentrated Flow Time 1
Source: SCS Velocity Graph as published in Virginia Erosion and
Sediment Control Handbook, Third Edition (Plate 5-2 on Page V-12)
Notes:
1) Not intended for well-defined channels - see channel flow calculation
2) Calculate a separate Tc for each ground cover condition along the flow path
27.501 Enter Length of Flow (ft)
7.001 Enter Slope (% or ft/100ft)
0.11 Result Tc (minutes) IF UNPAVED
0.08 Result Tc (minutes) IF PAVED
Pipe Flow Time 1
Assumes 5 ft/s velocity in pipe
0.00 Enter Length of Flow in Pipe (ft)
0. 001 Result Tc (minutes)
Weighted c-factor Worksheet
Cover Type
Area
c
Impervious
0.05
0.90
Yard/ditches/slopes
0.07
0.45
c-factor = 0.64
Time of Concentration Worksheet
Watershed ID: LS #1/Culvert B
Drainage Area:
0.85
Acres
c-factor:
0.43
(see worksheet)
tc:
10.68
mins. (see worksheet)
Q(2):
1.47
cfs
Q(10):
1.92
cfs
Q(25):
2.15
cfs
Weighted c-factor Worksheet
Time of Concentration Worksheet
Watershed ID: LS #2
Drainage Area:
0.50
Acres
c-factor:
0.68
(see worksheet)
tc:
8.46
mins. (see worksheet)
Q(2):
1.48
cfs
Q(10):
1.92
cfs
Q(25):
2.15
cfs
Overland Flow Time
Cover Type
Area
c
Overland Flow Time
Source: Seelye Chart as modified in VDOT Drainage Manual (Fig.
Impervious
0.15
0.90
Source: Seelye Chart as modified in VDOT Drainage Manual (Fig.
1.5.1.1 on Page 1-13E)
Yard/ditches/slopes
0.15
0.45
1.5.1.1 on Page 1-13E)
Notes:
Pasture
0.55
0.30
Notes:
1) Length of overland flow always <= 200 ft
1) Length of overland flow always <= 200 ft
2) Calculate a separate Tc for each ground cover condition along the flow path
2) Calculate a separate Tc for each ground cover condition along the flow path
c factor = 0.43
100.00
Enter Length of Strip (ft) Sample "C" values:
75.00
Enter Length of Strip (ft) Sample "C" values:
7.00
Enter Slope (% or ft/100ft) 0.22 Dense grass
7.00
Enter Slope (% or ft/100ft) 0.22 Dense grass
0.281
Enter Rational Method "C" value 0.28 Average grass
0.28
Enter Rational Method "C" value 0.28 Average grass
0.36 Poor grass
0.36 Poor grass
9.21 Result Tc (minutes) 0.48 Bare soil
8.17 Result Tc (minutes) 0.48 Bare soil
0.90 Pavement
0.90 Pavement
Shallow Concentrated Flow Time 1
Shallow Concentrated Flow Time 2
Shallow Concentrated Flow Time 1
Source: SCS Velocity Graph as published in Virginia Erosion and
Source: SCS Velocity Graph as published in Virginia Erosion and
Source: SCS Velocity Graph as published in Virginia Erosion and
Sediment Control Handbook, Third Edition (Plate 5-2 on Page V-12)
Sediment Control Handbook, Third Edition (Plate 5-2 on Page V-12)
Sediment Control Handbook, Third Edition (Plate 5-2 on Page V-12)
Notes:
Notes:
Notes:
1) Not intended for well-defined channels - see channel flow calculation
1) Not intended for well-defined channels - see channel flow calculation
1) Not intended for well-defined channels - see channel flow calculation
2) Calculate a separate Tc for each ground cover condition along the flow path
2) Calculate a separate Tc for each ground cover condition along the flow F 2) Calculate a separate Tc for each ground cover condition along the flow path
250.001 Enter Length of Flow (ft)
60.00 Enter Length of Flow (ft)
Enter Length of Flow (ft)
7.00 Enter Slope (% or ft/100ft)
4.00 Enter Slope (% or ft/100ft)
EMEnter Slope (% or ft/100ft)
0.98 Result Tc (minutes) IF UNPAVED 0.31 Result Tc (minutes) IF UNPAVED 1 0.291 Result Tc (minutes) IF UNPAVED
0.761 Result Tc (minutes) IF PAVED 1 0.241 Result Tc (minutes) IF PAVED 0.23 Result Tc (minutes) IF PAVED
Pipe Flow Time 1
Assumes 5 ft/s velocity in pipe
53.00 Enter Length of Flow in Pipe (ft)
0.18 Result Tc (minutes)
Pipe Flow Time 2
Assumes 5 ft/s velocity in pipe
0.00 Enter Length of Flow in Pipe (ft)
0.00 Result Tc (minutes)
Rainfall Intensity (Albemarle County, Virginia)
Return Duration Intensity
Period (mins.) I (in/hr)
2 10.7 4.0
10 10.7 5.2
25 10.7 5.9
Acceptable values for duration are between 5 and 60 minutes.
Use values outside this range at risk.
Watershed ID:
LS #3
Drainage Area:
0.25
Acres
c-factor:
0.68
(see worksheet)
tc:
8.73
mins. (see worksheet)
Q(2):
0.74
cfs
Q(10):
0.96
cfs
Q(25):
1.08
cfs
Time of Concentration Worksheet
Overland Flow Time
Source: Seelye Chart as modified in VDOT
Drainage Manual (Fig.
1.5.1.1 on Page 1-13E)
Notes:
1) Length of overland flow always <= 200 ft
2) Calculate a separate Tc for each ground cover condition along the flow path
89.00 Enter Length of Strip (ft)
Sample "C" values:
8.00 Enter Slope (% or ft/100ft)
0.22 Dense grass
0.28 Enter Rational Method "C" value
0.28 Average grass
0.36 Poor grass
8.55 Result Tc (minutes)
0.48 Bare soil
0.90 Pavement
Shallow Concentrated Flow Time 2
Shallow Concentrated Flow Time 1
Source: SCS Velocity Graph as published in Virginia Erosion and
Source: SCS Velocity Graph as published in Virginia Erosion and
Sediment Control Handbook, Third Edition (Plate 5-2 on Page V-12)
Sediment Control Handbook, Third Edition (Plate 5-2 on Page V-12)
Notes:
Notes:
1) Not intended for well-defined channels - see channel flow calculation
1) Not intended for well-defined channels - see channel flow calculation
2) Calculate a separate Tc for each ground cover condition along the flow r 2) Calculate a separate Tc for each ground cover condition along the flow path
0.00 Enter Length of Flow (ft)
1 45.001 Enter Length of Flow (ft)
1.001 Enter Slope (% or ft/100ft)
1 7.00 Enter Slope (% or ft/100ft)
0.00 Result Tc (minutes) IF UNPAVED
I 0.18 Result Tc (minutes) IF UNPAVED
0.00 Result Tc (minutes) IF PAVED
0.14 Result Tc (minutes) IF PAVED
Pipe Flow Time 2
Assumes 5 ft/s velocity in pipe
0.00 Enter Length of Flow in Pipe (ft)
0.00 Result Tc (minutes)
Rainfall Intensity (Albemarle County, Virginia)
Return Duration Intensity
Period (mins.) (in/hr)
2 6.8 4.7
10 6.8 6.1
25 6.8 6.9
Acceptable values for duration are between 5 and 60 minutes. Use values outside this range at risk.
Pipe Flow Time 1
Assumes 5 ft/s velocity in pipe
63.00 Enter Length of Flow in Pipe (ft)
0.21 Result Tc (minutes)
Weighted c-factor Worksheet
Cover Type
Area
c
Impervious
0.13
0.90
Yard/ditches/slopes
0.12
0.45
c-factor = 0.68
Pipe Flow Time 1
Assumes 5 ft/s velocity in pipe
112.00 Enter Length of Flow in Pipe (ft)
0.37 Result Tc (minutes)
Weighted c-factor Worksheet
Cover Type
Area
c
Impervious
0.25
0.90
Yard/ditches/slopes
0.25
0.45
c-factor = 0.68
Shallow Concentrated Flow Time 2
Source: SCS Velocity Graph as published in Virginia Erosion and
Sediment Control Handbook, Third Edition (Plate 5-2 on Page V-12)
Notes:
1) Not intended for well-defined channels - see channel flow calculation
2) Calculate a separate Tc for each ground cover condition along the flow
0.00 Enter Length of Flow (ft)
1.00 Enter Slope (% or ft/100ft)
0.00 Result Tc (minutes) IF UNPAVED
0.00 Result Tc (minutes) IF PAVED
Pipe Flow Time 2
Assumes 5 ft/s velocity in pipe
0.00 Enter Length of Flow in Pipe (ft)
0.00 Result Tc (minutes)
Rainfall Intensity (Albemarle County, Virginia)
Return Duration Intensity
Period (mins.) I (in/hr)
2 8.5 4.4
10 8.5 5.7
25 8.5 6.4
Acceptable values for duration are between 5 and 60 minutes.
Use values outside this range at risk.
Watershed ID:
LS #4
Drainage Area:
1.00
Acres
c-factor:
0.46
(see worksheet)
tc:
11.38
mins. (see worksheet)
Q(2):
1.78
cfs
Q(10):
2.32
cfs
Q(25):
2.60
cfs
Time of Concentration Worksheet
Overland Flow Time
Source: Seelye Chart as modified in VDOT Drainage Manual (Fig.
1.5.1.1 on Page 1-13E)
Notes.-
1) Length of overland flow always - 200 ft
2) Calculate a separate Tc for each ground cover condition along the flow path
112.00 Enter Length of Strip (ft)
Sample "C" values:
7.00 Enter Slope (% or ft/100ft)
0.22 Dense grass
0.28 Enter Rational Method "C" value
0.28 Average grass
0.36 Poor grass
9.66 Result Tc (minutes)
0.48 Bare soil
0.90 Pavement
Shallow Concentrated Flow Time 2 Shallow Concentrated Flow Time 1
Source: SCS Velocity Graph as published in Virginia Erosion and Source: SCS Velocity Graph as published in Virginia Erosion and
Sediment Control Handbook, Third Edition (Plate 5-2 on Page V-12) Sediment Control Handbook, Third Edition (Plate 5-2 on Page V-12)
Notes: Notes:
1) Not intended for well-defined channels - see channel flow calculation 1) Not intended for well-defined channels - see channel flow calculation
2) Calculate a separate Tc for each ground cover condition along the flow, 2) Calculate a separate Tc for each ground cover condition along the flow path
0.00 Enter Length of Flow (ft) 82.00 Enter Length of Flow (ft)
1.00 Enter Slope (% or ft/100ft) 1.00 Enter Slope (% or ft/100ft)
0.00I Result Tc (minutes) IF UNPAVED 1 0.85 Result Tc (minutes) IF UNPAVED
0.00I Result Tc (minutes) IF PAVED 0.68 Result Tc (minutes) IF PAVED
Pipe Flow Time 2
Assumes 5 ft/s velocity in pipe
0.00 Enter Length of Flow in Pipe (ft)
0.00 Result Tc (minutes)
Rainfall Intensity (Albemarle County, Virginia)
Return Duration Intensity
Period (mins.) (in/hr)
2 8.7 4.3
10 8.7 5.6
25 8.7 6.3
Acceptable values for duration are between 5 and 60 minutes. Use values outside this range at risk.
Pipe Flow Time 1
Assumes 5 ft/s velocity in pipe
260.00 Enter Length of Flow in Pipe (ft)
0.87 Result Tc (minutes)
Weighted c-factor Worksheet
Cover Type
Area
c
Impervious
0.10
0.90
Yard/ditches/slopes
0.70
0.45
Preserved Area
0.20
0.25
c-factor = 0.46
Shallow Concentrated Flow Time 2
Source: SCS Velocity Graph as published in Virginia Erosion and
Sediment Control Handbook, Third Edition (Plate 5-2 on Page V-12)
Notes:
1) Not intended for well-defined channels - see channel flow calculation
2) Calculate a separate Tc for each ground cover condition along the flow F
0.00 Enter Length of Flow (ft)
1.00 Enter Slope (% or ft/100ft)
0.00 Result Tc (minutes) IF UNPAVED
0.00 Result Tc (minutes) IF PAVED
Pipe Flow Time 2
Assumes 5 ft/s velocity in pipe
0.00 Enter Length of Flow in Pipe (ft)
0.00 Result Tc (minutes)
Rainfall Intensity (Albemarle County, Virginia)
Return Duration Intensity
Period (mins.) I (in/hr)
2 11.4 3.9
10 11.4 5.1
25 11.4 5.7
Acceptable values for duration are between 5 and 60 minutes. Use values outside this range at risk.
wate r s t reetst u d i o
landscape architecture I civil engineering
418 E Main Street 434.295.8177 Charlottesville, VA 22902
NOT FOR CONSTRUCTION
professional seal
B. Mauzy
project manager
M. Kearney
project team
CHRISTOPHER
-SHILLING RESIDENCE
project name
TANNER SHILLING &
SALLY CHRISTOPHER
client
ZACK LANE
CHARLOTTESVILLE, VIRGINIA
project address
project number
VSMP
project phase
MARCH 25, 2020
issue date
revisions
STORMWATER
CALULATIONS &
DETAILS
sheet title
swe
sheet number