HomeMy WebLinkAboutWPO202200021 Plan - VSMP 2022-05-27STOCKTON CREEK SUBDIVISION
GENERAL NOTES
OWNER:
STOCKTON CREEK LLC
455 SECOND STREET 57H FLOOR
CHARLOTTESVILLE, VA 22902
DEVELOPER.
RIVERBEND DEVELOPMENT, INC.
455 SECOND STREET SE SUITE 200
CHARLOTTESWLLE, VA 22902
AT7N: ALAN TAYLOR
ENGINEER:
COLLINS ENGINEERING
200 GARRETT ST SUITE K
CHARLOTTESWLLE, VA 22902
(434)293-3719
TAX MAP NO.:
1. 06900-00-00-019BO (DB.5504,
PG.614) -
3.64 ACRES
2. 06900-00-00-019CO (DB.5504,
PG.614)
- 7.70 ACRES
J. 06900-00-00-019EO (DB.5504,
PG.614)
- 4.62 ACRES
4. 06900-00-00-019FO (DB.5504,
PG.614)
- 4.63 ACRES
5. 06900-00-00-019HO (OB.5504,
PG.614)
- 11.03 ACRES
6. 06900-00-00-019JO (DB.5504,
PG.614) -
8.92 ACRES
7. 06900-00-00-050BO (OB.5504,
PG.614)
- 8.73 ACRES
TOTAL AREA:
49.27 AC.
ZONING:
RA - RURAL AREA - WITH HAZARD
OVERLAY DISTRICT, ENTRANCE CORRIDOR OVERLAY DISTRICT &
CRITICAL SLOPES OVERLAY DISTRICT
DEVELOPMENT RIGHTS: IMP 69-19C, IMP 69-19E, IMP 69-19F, & IMP 69-50B ALL HAVE (2) DEVELOPMENT RIGHTS AND MAY BE
FURTHER SUBDIVIDED. IMP 69-19H AND IMP 69-19J BOTH HAVE (4) DEVELOPMENT RIGHTS AND MAY BE
FURTHER SUBDIVIDED. IMP 69-19B HAS (2) DEVELOPMENT RIGHTS BUT MAY NOT BE FURTHER SUBDIVIDED N THE
CURRENT CONFIGURATION.
PROPOSED USE:
15 SINGLE FAMILY DETACHED (RURAL RESIDENTIAL) LOTS
OPEN SPACE.•
NONE (NOT APPLICABLE)
RECREATION AREA:
NONE (NOT APPLICABLE)
CRITICAL SLOPES:
CRITICAL SLOPES ARE LOCATED ON THE PROPERTY AND SHOWN ON THE EXISTING CONDIT70NS PLAN SHEET (SHEET
2). NO CRITICAL SLOPES WILL BE IMPACTED WITH THE PROPOSED ROAD DEVELOPMENT AND SUBDIVISION OF THE
PROPERTY.
BUILDING HEIGHTS:
MAXIMUM BUILDING HEIGHTS SHALL NOT EXCEED 35 FEET
SETBACKS•
FRONT: MIN. 75' (ALONG EXISTING PUBLIC R/W) AND 25' (ALONG INTERNAL PRIVATE & PUBLIC STREETS)
NO MAXIMUM SETBACK
SIDE: MINIMUM - 25' AND NO MAXIMUM
REAR: 35' MINIMUM AND NO MAXIMUM
SUBDIVISION STREETS:
ROADSIDE DITCH
WATERSHED:
STOCKTON CREEK WATER SUPPLY WATERSHED
AGRICULTURAL/ FORESTAL
DISTRICT: NONE
TOPO & SURVEY:
TOPOGRAPHY PROVIDED BY ROGER RAY & ASSOCIATES, JANUARY 2022. HE BOUNDARY LINE INFORMATION IS
PROVIDED BY ROGER RAY & ASSOCIATES, AUGUST 2021. INFORMATI0N FIELD VERIFIED BY COLLINS ENGINEERING IN
DECEMBER OF 2021.
DATUM:
NAD 83
EXIS77NG VEGETATION:
EXIS77NG FARM LAND WITH CORN CROPS AND PASTURES FOR COWS. TREE VEGETATION OVER A PORTION OF THE
PROPERTY, MAINLY ALONG THE STREAM CORRIDORS. (1) EXISTING FARM HOUSE WITH BARNS.
LIGHTING:
NO LIGHTING IS PROPOSED
PARKING:
REQUIRED PARKING:
2 OFFSITE PARKING SPACES PER LOT WITHIN THE DRIVEWAY OF THE RESIDENTIAL LOTS
PARKING PROVIDED:
2 OFFSITE PARKING SPACES PER LOT WITHIN THE DRIVEWAY OF THE RESIDENTIAL LOTS
NOTE: NO FORMAL ON -STREET PARKING IS PROPOSED ALONG THE PROPOSED STREETS AND CUL-DE-SACS.
PHASING:
THESE PROPERTIES SHALL BE DEVELOPED WITHIN (1) PHASE
BURIAL SITES:
NO CEMETERIES WERE FOUND DURING A FIELD INVESTIGATION OF THE SITE.
STREAM BUFFERS:
THE STREAM BUFFERS SHOWN HEREON SHALL BE MANAGED IN ACCORDANCE WITH THE ALBEMARLE COUNTY WATER
PROTECT70N ORDINANCE. SEE SHEET 2 FOR THE LOCATION OF THE STREAM BUFFERS.
RETAINING WALLS:
NO RETAINING WALLS ARE PRPOPOSED.
LANDSCAPING:
STREET TREES ARE PROPOSED ALONG THE NEIGHBORHOOD STREETS IN ACCORDANCE WITH ALBEMARLE COUNTY
LANDSCAPING REQUIREMENTS WITHIN SECTION 32.Z9 OF THE COUNTY CODE AND IN ACCORDANCE WITH CHAPTER
14.
BUILDING SITES. •
EACH PARCEL CONTAINS A BUILDING SITE THAT COMPLIES WITH SECT70N 4.2.1. OF THE ALBEMARLE COUNTY ZONING
ORDINANCE.
STREAM BUFFERS/FLOODPLAIN. THERE IS A 100-YEAR FLOODPLAIN ON THE PROPERTY, PER FEMA MAPS 51003CO225D, FEBRUARY 4,
2005. STREAM BUFFER EXISTS, AS SHOWN ON SHEET 2.
OFFSITE DISTURBANCE. •
NO OFFSITE DISTURBANCE IS PROPOSED WITH THIS PLAN
NOTES:
1) THIS PROPERTY DOES NOT LIE WITHIN AN AGRICULTURAL AND/OR FORESTAL DISTRICT.
2) ONLY (1) DWELLING PER LOT SHALL BE PERMITTED.
3) STREET TREES SHALL BE PROVIDED ALONG ALL THE PUBLIC STREETS 40' O.C. IN ACCORDANCE WITH VDOT AND ALBEMARLE COUNTY
STANDARDS.
4) EACH LOT SHALL
HAVE AN INDIVIDUAL ]RASH CONTAINER WITH PRIVATE TRASH SEROCE FOR PICKUP.
5) THIS PROPERTY IS NOT LOCATED WITHIN A DAM INUNDAT70N ZONE.
6) RETAINING WALLS
GREATER THAN 3' IN HEIGHT REQUIRE A SEPARATE BUILDING PERMIT WALLS EXCEEDING 4' IN HEIGHT REQUIRE A
STAMPED ENGINEERED DESIGN. WALLS CROSSING LOT LINES REQUIRE AN EASEMENT
7) ALL WATER LINES,
SEWER LINES, AND FIRE LINES FROM THE MAIN TO THE STRUCTURE MUST HAVE A VISUAL INSPEC77ON
PERFORMED BY THE BUILDING DEPARTMENT
GENERAL BUILDING DEPARTMENT NOTES
1. WHERE THE FLOOD LEVEL RIMS OF PLUMBING FIXTURES ARE BELOW THE ELEVAT70N OF THE
MANHOLE COVER OF THE NEXT UPSTREAM MANHOLE IN THE PUBLIC SEWER, THE FIXTURES
SHALL BE PROTECTED BY A BACKWATER VALVE INSTALLED IN THE BUILDING DRAIN, BRANCH
OF THE BUILDING DRAIN OR HORIZONTAL BRANCH SERVING SUCH FIXTURES. PLUMBING
FIXTURES HAVING FLOOD LEVEL RIMS ABOVE THE ELEVAT70N OF THE MANHOLE COVER OF
THE NEXT UPSTREAM MANHOLE IN THE PUBLIC SEWER SHALL NOT DISCHARGE THROUGH A
BACKWATER VALVE.
2. DUE TO REQUIRED DISTANCES FROM LOT LINES AND STRUCTURES AS REQUIRED BY THE
NFPA, UNDERGROUND PROPANE TANKS MAY BE PROHIBITED. THE BUILDER/DEVELOPER
SHALL PLAN ACCORDINGLY.
VSMP PLAN
WP0202200
WHITEHALL DISTRICT
ALBEMARLE COUNTY, VIRGINIA
SH LAYOUT
C 1" = 160'
---------------
------------- ----
----
LOT 13
6.05 ACRES /
/ \ / LOT 12 \ \ / ` • '� ` _�,..
\ 2.41 ACRES \ \ '`•,` `�, •'a.
LOT 9
2.98ARE5
LOT 10
2.20 ACRES \\\ / /::� �.\ ( a•Q'.�:\•'
/
LOT 14 °°�%•. `• �..
3.95ACRES .•�`
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/ LOT 23 /
zozncREs / v � � �-� �v, �� / /�; �� vv vv / / °A•-',�.``�_ '�s��iy6
LOT 16
2.26 ACRES
LOT 22
\d •'�� J.-
&;�2.49 ALOT 17
CRES/
LOT 3A
2.07ACRE5 6.19ACRES
LOT 21
3.10 ACRES / LOT 20
3.47 ACRES
II
LOT 3B /
2.49 ACRES
IMPERVIOUS AREAS (WITHIN LOD):
PROPOSED
ROAD WA Y
50,089
SF
PROPOSED
DRI VEWA YS
42,996
SF
PROPOSED
RESIDENCES
31,200
SF
PROPOSED
SIDEWALKS
0
SF
TOTAL
124,285
SF
OVERALL ACREAGES
TOTAL ACRES OF LOTS: 46.76 AC (94.97)
TOTAL ACRES OF OPEN SPACE: 0.00 AC (30.39)
TOTAL ACRES OF ROW. 2.51 AC (5.19)
211)
I
LOT 18
\ \\ 2.09 ACRES / �• �.yl
LOT 19 d
3.43 ACRES
TRIP GENERATION CALCULATIONS
SCALE: 1 "=100'
TRIP GENERATION BASED ON ITE TRIP GENERATION MANUAL
(10TH EDITION)
15 SINGLE FAMILY DETACHED UNITS (CODE 210)
TOTAL ADT: 142 VPD (71 ENTER/ 71 EXIT)
TOTAL AM PEAK: 12 VPH (3 ENTER/ 9 EXIT)
TOTAL PM PEAK: 15 VPH (10 ENTER/ 5 EXIT)
SUBJECT
SITE
Brookville Mano
ir
gar LciAIIl RA.nr,9%
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VICINITY MAP
SCALE: 1" = 2000'
ROADS LEGEND
EXIS77NG CULVERT
a
0
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Q
DROP INLET & STRUCTURE NO.
CURB
CURB & GUTTER
a
PROPOSED PAVEMENT
EC-3A DITCH
DEPTH OF EC-3A DITCH
EC-2 DITCH
DEPTH OF EC-2 DITCH
w
250
Greenway
EARTH DITCH
DRIVEWAY CULVERT
BENCH MARK
CLEARING LIMITS
200
EXIS77NG CONTOUR
zoo
PROPOSED CONTOUR
240.55
VDOT STANDARD STOP SIGN
PROPOSED SPOT ELEVA 77ON
VSMP PLAN SHEET LIST
Sheet Number
Sheet Title
1
COVER SHEET
2
EXISTING CONDITIONS & DEMOLITION PLAN
3
EROSION & SEDIMENT CONTROL NARRATIVE
4
EROSION & SEDIMENT CONTROL PLAN - PHASE 1
5
EROSION & SEDIMENT CONTROL PLAN - PHASE 11
6
EROSION & SEDIMENT CONTROL PLAN - PHASE III
7
EROSION & SEDIMENT CONTROL DETAILS
8
EROSION & SEDIMENT CONTROL DETAILS
9
PRE -REDEVELOPMENT STORMWATER MANAGEMENT PLAN
10
POST -REDEVELOPMENT STORMWATER MANAGEMENT PLAN
11
STORMWATER MANAGEMENT PLAN DETAILS
12
OVERALL GRADING PLAN
SCOTT /R. CITLLINS'Z
Lic. No. 035791,E
p 5/20/22
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MONITMENT� 2
1992
EROSION & SEDIMENT CONTROL MEASURES:
STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN ACCORDANCE NH THE VIRGINIA EROSION AND SEDIMENT
CONTROL HANDBOOK. STRUCTURAL PRACTICES USED IN THIS SECTION CONSIST OF HE FOLLOWING:
3.01 SAFETY FENCE.•
A PROTEC7VE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. TO PROHIBIT HE UNDESIRABLE USE OF AN
EROSION CONTROL MEASURE BY 774E PUBLIC. APPLICABLE TO ANY CONTROL MEASURE OR SERIES OF MEASURES WHICH CAN BE CONSIDERED
UNSAFE BY VIRTUE OF POTENTIAL ACCESS BY THE PUBLIC.
3.02 CONSTRUCTION ENTRANCE:
A STABILIZED PAVED CONSTRUCTION ENTRANCE ViWTH A WASH RACK LOCATED AT POINTS OF VEHICULAR INGRESS AND EGRESS ON A
CONSTRUCTION SITE. TO REDUCE THE AMOUNT OF MUD TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF.
CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON HE PLANS TO REDUCE THE AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC
ROADWAYS.
3.05 SILT FENCE:
A TEMPORARY SEDIMENT BARRIER CONSIS77NG OF A SYNTHETIC FILTER FABRIC STRETCHED ACROSS AND ATTACHED TO SUPPORTING POSTS AND
ENTRENCHED, TO INTERCEPT AND DETAIN SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUC7ON OPERATIONS IN ORDER
TO PREVENT SEDIMENT FROM LEAVING THE SITE, AND TO DECREASE THE VELOCITY OF SHEET FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL
FLOWS. HE SILT FENCE BARRIERS SHALL BE INSTALLED DOWN SLOPE OF AREAS WITH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF
FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH RAINFALL AND MAINTAINED IN ACCORDANCE NH THE
VWRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH).
3.07 STORM DRAIN INLET PROTECTION.
A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM DRAIN DROP INLET OR CURB INLET TO PREVENT SEDIMENT FROM
ENTERING STORM DRAINAGE SYSTEMS PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. INLET PR07ECTON APPLIES WHERE
STORM DRAIN INLETS ARE TO BE MADE OPERA77ONAL BEFORE PERMANENT STABILIZATION OF THE CORRESPONDING DISTURBED DRAINAGE AREA.
3.08 CULVERT INLET PROTECTION.
A SEDIMENT FILTER OR AN EXCAVATED IMPOUNDING AREA AROUND A STORM CULVERT. TO PREVENT SEDIMENT FROM ENTERING STORM
CULVERTS PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA. INLET PR07ECT70N APPLIES WHERE STORM CULVERTS ARE EXIS77NG
OR TO BE MADE OPERATIONAL BEFORE PERMANENT STABILIZATION OF THE CORRESPONDING DRAINAGE AREA.
3.09 TEMPORARY DIVERSION DIKE.•
A TEMPORARY RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA. TO DIVERT STORM RUNOFF
FROM UPSLOPE DRAINAGE AREAS AWAY FROM UNPR07ECTED DISTURBED AREAS AND SLOPES TO A STABILIZED OUTLET TO DIVERT
SEDIMENT -LADEN RUNOFF FROM A DISTURBED AREA TO A SEDIMENT -TRAPPING FACILITY SUCH AS A SEDIMENT TRAP OR SEDIMENT BASIN. USE
WHEREVER STORMWATER RUNOFF MUST BE TEMPORARILY DIVERTED TO PR07ECT DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON S17F
DURING CONSTRUCTION. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 MONTHS OR LESS, WHICH CAN BE PROLONGED WlTH
PROPER MAINTENANCE.
3.12 DIVERSION:
A CHANNEL CONSTRUCTED ACROSS A SLOPE WITH A SUPPORTING EARTHEN RIDGE ON THE LOWER SIDE. TO REDUCE SLOPE LENGTH AND TO
INTERCEPT AND DIVERT STORMWATER RUNOFF TO STABILIZED OUTLETS AT NON -EROSIVE VELOCITIES. APPLIES WHERE RUNOFF FROM AREAS OF
HIGHER ELEVATION MAY DAMAGE PROPERTY, CAUSE EROSION, OR INTERFERE WITH THE ESTABLISHMENT OF VEGETATION ON LOWER AREAS,
WHERE SURFACE AND/OR SHALLOW SUBSURFACE FLOW IS DAMAGING SLOPING UPLAND, AND WHERE THE SLOPE LENGTH NEEDS TO BE REDUCED
TO MINIMIZE SOIL LOSS.
3.13 TEMPORARY SEDIMENT TRAP. -
A TEMPORARY PONDING AREA FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE OUTLET. TO DETAIN SEDIMENT -LADEN
RUNOFF FROM SMALL DISTURBED AREAS LONG ENOUGH TO ALLOW THE MAJORITY OF HE SEDIMENT TO SETTLE OUT. USE BELOW DISTURBED
AREAS WHERE THE TOTAL CONTRIBUTING DRAINAGE AREA IS LESS THAN 3 ACRES, WHERE THE SEDIMENT TRAP WILL BE USED NO LONGER THAN
18 MONTHS, AND IT MAY BE CONSTRUCTED EITHER INDEPENDENTLY OR IN CONJUNCTION WITH A TEMPORARY DIVERSION DIKE.
314 TEMPORARY SEDIMENT BASIN.
A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE STRUCTURE FORMED BY CONSTRUCTING AN EMBANKMENT OF
COMPACTED SOIL ACROSS A DRAINAGEWAK TO DETAIL SEDIMENT -LADEN RUNOFF FROM DISTURBED AREAS IN "WET" AND `DRY" STORAGE
LONG ENOUGH FOR THE MAJORITY OF THE SEDIMENT TO SETTLE OUT. APPLIES BELOW DISTURBED AREAS WHERE THE TOTAL CONTRIBUTING
DRAINAGE AREA IS EQUAL TO OR GREATER THAN THREE ACRES. THERE MUST BE SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY FOR THE
CONSTRUCTION OF A TEMPORARY IMPOUNDMENT.
3.18 OUTLET PROTECTION:
STRUCTURALLY LINED APRONS OR OTHER ACCEPTABLE ENERGY DISSIPATING DEVCES PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL
SECTIONS TO PREVENT SCOUR AT STORMWATER OUTLETS, TO PR07ECT THE OUTLET STRUCTURE, AND TO MINIMIZE THE P07EN77AL FOR
DOWNSTREAM EROSION BY REDUCING HE VELOCITY AND ENERGY OF CONCENTRATED STORMWATER FLOWS. APPLICABLE TO THE OUTLETS OF
ALL PIPES AND ENGINEERED CHANNEL SECTIONS.
319 RIPRAP:
A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE WITH FILTER FABRIC OR GRANULAR UNDERLINING. TO
PR07ECT THE SOIL FROM THE EROSIVE FORCES OF CONCENTRATED RUNOFF, SLOW HE VELOCITY OF CONCENTRATED RUNOFF WHILE ENHANCING
THE P07EN77AL FOR INFILTRATION, AND TO STABILIZE SLOPES NH SEEPAGE PROBLEMS, AND/OR NON -COHESIVE SOILS. USE WHEREVER SOIL
AND WATER INTERFACE AND THE SOIL CONDITIONS, WATER TURBULENCE AND VELOCITY, EXPECTED VEGETATIVE COVER, ETC., ARE SUCH THAT
THE SOIL MAY ERODE UNDER THE DESIGN FLOW CONDITIONS.
3.20 ROCK CHECK DAMS:
SMALL TEMPORARY STONE DAMS CONSTRUCTED ACROSS A SWALE OR DRAINAGE DITCH. TO REDUCE HE VELOCITY OF CONCENTRATED
STORMWATER FLOWS, HEREBY REDUCING EROSION OF HE SWALE OR DITCH. HIS PRACTICE ALSO TRAPS SEDIMENT GENERATED FROM
ADJACENT AREAS OR THE DITCH ITSELF, MAINLY BY PONDING OF HE STORMWATER RUNOFF. HIS PRACTICE, UTILIZING A COMBINATION OF
STONE SIZES, IS LIMITED TO USE IN SMALL OPEN CHANNELS WHICH DRAIN 10 ACRES OR LESS
3.31 TEMPORARY SEEDING:
THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING NH APPROPRIATE RAPIDLY GROWING ANNUAL
PLANTS. TO REDUCE EROSION AND SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE FOR A
PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO DOWNSTREAM OR OFF -SITE AREAS, AND TO PROVIDE
PR07EC77ON TO BARE SOILS EXPOSED DURING CONSTRUCTION UNTIL PERMANENT VEGETATION OR 07HER EROSION CONTROL MEASURES CAN BE
ESTABLISHED.
3.32 PERMANENT STABILIZATION.
THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANING SEED. TO REDUCE EROSION AND DECREASE
SEDIMENT YIELD FROM DISTURBED AREAS. TO PERMANENTLY STABILIZE DISTURBED AREAS /N A MANNER THAT /S ECONOMICAL, ADAPTABLE TO
SITE CONDITIONS, AND ALLOWS SELECTION OF THE MOST APPROPRIATE PLANT MATERIALS. TO IMPROVE WILDLIFE HABITAT. TO ENHANCE
NATURAL BEAUTY. UPON COMPLETION OF CONSTRUCTION ACTIVITIES, ALL AREAS WILL RECEIVE A PERMANENT VEGETATIVE COVER.
3.35 MULCHING,
APPLICATION OF PLANT RESIDUES OR OTHER SUITABLE MATERIALS TO THE SOIL SURFACE. TO PREVENT EROSION BY PR07EC77NG THE SOIL
SURFACE FROM RAINDROP IMPACT AND REDUCING HE VELOCITY OF OVERLAND FLOW. TO FOSTER THE GROWTH OF VEGETATION BY INCREASING
AVAILABLE MOISTURE AND PRONDING INSULATION AGAINST EXTREME HEAT AND COLD. AREAS WHICH HAVE BEEN PERMANENTLY SEEDED
SHOULD BE MULCHED IMMEDIATELY FOLLOWING SEEDING. AREAS WHICH CANNOT BE SEEDED BECAUSE OF HE SEASON SHOULD BE MULCHED
USING ORGANIC MULCH. MULCH MAY BE USED TOGETHER K17H PLANTINGS OF TREES, SHRUBS, OR CERTAIN GROUND COVERS WHICH DO NOT
PROVIDE ADEQUATE SOIL STABILIZATION BY THEMSELVES, CAN BE USED IN CONJUNCTION K17H TEMPORARY SEEDING.
337 TREES. SHRUBS VINES & GROUND COVERS:
STABILIZING DISTURBED AREAS BY ESTABLISHING VEGETATIVE COVER NH TREES, SHRUBS, VINES, OR GROUND COVERS. TO AID IN STABILIZING
SOIL IN AREAS WHERE VEGETATION OVER THAN TURF IS PREFERRED, TO PROVIDE FOOD AND SHELTER FOR WILDLIFE WHERE WILDLIFE HABITAT IS
DESIRABLE. APPLIES IN AREAS WHERE TURF ESTABLISHMENT IS DIFFICULT, ON STEEP OR ROCKY SLOPES WHERE MOWING IS NOT FEASIBLE,
WHERE ORNAMENTALS ARE DESIRABLE FOR LANDSCAPING PURPOSES, AND WHERE WOODY PLANTS ARE DESIRABLE FOR SOIL CONSERVATION, OR
TO ESTABLISH WILDLIFE HABITAT.
336 BLANKET MATTING:
INSTALLATION OF A PROTECTIVE COVERING OR A SOIL STABILIZATION MAT ON A PREPARED PLANTING AREA OF A STEEP SLOPE OR CHANNEL TO
AID IN THE CONTROLLING EROSION ON CRITICAL AREAS.
3.38 TREE PRESERVATION AND PROTECTION.
PR07EC77ON OF DESIRABLE TREES FROM MECHANICAL OR OTHER INJURY DURING LAND DISTURBING AND CONSTRUCTION ACTIVITY. TO ENSURE
THE SURVWVAL OF DESIRABLE TREES WHERE THEY WILL BE EFFECTIVE FOR EROSION AND SEDIMENT CONTROL, WATERSHED PROTECTION,
LANDSCAPE BEAUTIFICATION, DUST AND POLLUTION CONTROL, NOISE REDUCTION, SHADE AND 07HER ENVIRONMENTAL BENEFITS WHILE THE LAND
IS BEING CONVERTED FROM FOREST TO URBAN -TYPE USES. APPLIES IN TREE -INHABITED AREAS SUBJECT TO LAND DISTURBING ACTIVITIES
3.39 DUST CONTROL:
REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION AND CONSTRUCTION ACTIVITIES. TO PREVENT
SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND REDUCE HE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY
PRESENT HEALTH HAZARDS, TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE. DUST CONTROL MEASURES SHALL BE EMPLOYED TO
PREVENT SURFACE AND AIR MOVEMENT OF DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE NH HE VESCH.
3.32
TABLE 3.32-D
SITE SPECIFIC SEEDING MIXTURES FOR PIEDMONT AREA
Total Lbs.
Per Acre
Minimum Care Lawn
- Commercial or Residential
175-200 lbs.
- Kentucky 31 or Turf -Type Tall Fescue
95-100%
- Improved Perennial Ryegrass
0.5%
- Kentucky Bluegrass
0.5%
High -Maintenance Lawn
200-250lbs.
- Kentucky 31 or Turf -Type Tall Fescue
100%
General Sl%& (3:1 or less)
. Kentucky 31 Fescue
128 lbs.
. Red Top Grass
2 lbs.
- Seasonal Nurse Crop*
.20 lbs.
150 lbs.
Low -Maintenance Slope (Steeoer than 3:1)
- Kentucky 31 Fescue
108 lbs.
- Red Top Grass
2 lbs.
- Seasonal Nurse Crop*
20 III
- Crownvetch ie
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 Fartnville, Va. (May
through September use hulled Sericea, all other periods, use unhulled Sericea).
If Flatpea is used in lieu of Crownvetch, increase rate to 30lbs./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.
TABLE 331-A
LMUNG REQUIREMENTS
FOR TEMPORARY SITES
Recommended Application
pH Test of Aoiculnual Limestone
below 4.2 3 tons per acre
42 to 5.2 2 tole per acre
52 to 6 1 ton per ane
TABLE "I-B
ACCEPTABLE TEMPORARY SEEDING PLANE MATERIAL&
-QUICK REFERENCE FOR ALL REGIONS"
Rate
]%.n Dve, s.d� tlaL.,B )
Sept. I - Feb. 15 50/50 M4 M
Annual RM.
a,Iaum mnw-nnmmi
& so-100
CaW(w ta)Rye
(&.� m. .)
Feb.16 - Apr. 30 A .0 Rye . 60 - 100
n„m,m multi-rf„nm)
May 1. Aug 31 German Wla M
GENERAL SLOPE (3:1 OR LESS) TOTAL LBS PER ACRE
KENTUCKY 31 FESCUE 128 LBS
RED TOP GRASS 2 LBS
SEASONAL NURSE CROP 20 LBS
150 LBS
SEASONAL
NURSE CROP
FEBRUARY
16 THROUGH APRIL
ANNUAL
RYE
MAY 1 THROUGH
AUGUST 15
FOXTAIL
MILLET
AUGUST 16
THROUGH OCTOBER
ANNUAL
RYE
NOVEMBER
THROUGH FEBRUARY 15
WINTER
RYE
NOTES:
1. LIME AND FERTILIZER NEEDS SHALL BE DETERMINED BY SOIL
TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32.
2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION
OF SEED APPLICATION, IN ACCORDANCE W/ VESCH STD 3.35.
PERMANENT SEEDING SCHEDULE PS
NO SCALE
(STD. & SPEC. 3.32 OF VIRGINIA EROSION &
SEDIMENT CONTROL HANDBOOK, 3RD ED.)
EROSION CONTROL NOTES
ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETATIVE AND STRUCTURAL EROSION
AND SEDIMENT CONTROL PRACTCES WILL BE CONSTRUCTED AND MAINTAINED
ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA
EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS I/R
625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS.
ES-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 AC77WTY, AND ONE WEEK PRIOR TO HE FINAL
INSPECTION.
ES-3:ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR
TO OR AS HE FIRST STEP IN CLEARING.
ES-4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE
MAINTAINED ON THE S1TE AT ALL TIMES.
ES-5: PRIOR TO COMMENCING LAND DISTURBING ACT7077ES 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.
ES-6: THE CONTRACTOR IS RESPONSIBLE FOR INSTALLA7ON OF ANY ADDITIONAL
EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND
SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY.
ES-7.'ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL
MEASURES AT ALL 77MES DURING LAND DISTURBING AC77WTIES AND DURING
SITE DEVELOPMENT UN77L FINAL STABILIZATION IS ACHIEVED.
ES-8: DURING DEWA7ERING OPERATIONS, WATER WILL BE PUMPED INTO AN
APPROVED WATER FILTERING DEVICE.
ES-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 EFFEC77VENESS OF THE
EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY.
General construction notes for Erosion and Sediment Control plans
1. The plan approving authority must be notified one week prior to the pre -construction
conference, one week prior to the commencement of land disturbing activity, and one week
prior to the final inspection.
2. All erosion and sediment control measures will be constructed and maintained 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.
3. All erosion and sediment control measures are to be placed prior to or as the first step in
clearing.
4. A copy of the approved erosion and sediment control plan shall be maintained on the site at
all times.
5. Prior to commencing land disturbing activities in areas other than indicated on these plans
(including, but not limited to, off -site borrow or waste areas), the contractor shall submit a
supplementary erosion control plan to the owner for review and approval by the plan
approving authority.
6. The contractor is responsible for installation of any additional erosion control measures
necessary to prevent erosion and sedimentation as determined by the plan approving
authority.
7. All disturbed areas are to drain to approved sediment control measures at all times during
land disturbing activities and during site development until final stabilization is achieved.
8. During dewatering operations, water will be pumped into an approved filtering device.
9. The contractor shall inspect all erosion control measures periodically and after each runoff -
producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of
the erosion control devices shall be made immediately.
10. All fill material to 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 or waste areas are to be reclaimed within 7 days of completion per Zoning
Ordinance section 5.1.28.
13. All inert materials shall be transported in compliance with section 13-301 of the Code of
Albemarle.
14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to
the hours of 7:00am to 9:00pm.
15. 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 o slides, sinking, or collapse.
16. The developer shall reserve the right to install, maintain, remove or convert to permanent
stormwater management facilities where applicable all erosion control measures required
by this plan regardless of the sale of any lot, unit, building or other portion of the property.
17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75
lbs/acre, and in the months of September to February to consist a 50150 mix of Annual
Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, cr May
through August to consist of German Millet. Straw mulch is to be applied at 80lbs/100sf.
Alternatives are subject to approved by the County erosion control inspector.
18. Permanent stabilization shall be lime and fertilizer, permanent seeding, and mulch.
Agricultural grade limestone shall be applied at 90lbs/1000sf, incorporated into the top 4-6
inches of soil. Fertilizer shall be applied at 1000lbs/acre and consist of a 10-20-10 nutrient
mix. Permanent seeding shall be applied at 180lbs/acre and consist of 95% Kentucky 31 or
Tall Fescue and 0-5%D Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be
applied at 80lbs/100sf. Alternatives are subject to approved by the County erosion control
inspector.
19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage
or clogging to structural measures is to he 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 dykes
which are collecting sediment to half their height must be cleaned and repaired
immediately.
20. All temporary erosion and sediment control measures are to be removed within 30 days of
final site stabilization, when measures are no longer needed, subject to approval by the
County erosion control inspector.
21. This plan shall be void if the owner does not obtain a permit within 1 year of the date of
approval. (Water Protection Ordinance section 17-204G.)
22. Permanent vegetation shall be installed on all denuded areas within nine (9) months after
the date the land disturbing activity commenced. (Water Protection Ordinance section 17-
207B)
ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR EXTENDED PERIODS OF TIME SHALL BE SEEDED
WIN FAST GERMINATING TEMPORARY VEGETATION IMMEDIATELY FOLLOWING GRADING. SELECTION OF THE
SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR AND WILL BE APPLIED TO DISTURBED AIRES THAT
WILL NOT BE BROUGHT TO FINAL GRADE WITHIN 30 DAYS.
PLANTS SHOULD BE SELECTED APPROPRIATE TO THE SEASON AND SITE CONDITIONS FROM TABLES 3.31B
AND 3.31C. N07E THAT TABLE 3.31B PRESENTS PLANTS WHICH CAN BE USED WITHOUT EXTENSIVE
EVALUATION OF SITE CONDITIONS, • TABLE 331C PRESENTS MORE IN-DEPTH INFORMATION ON THE PLANT
MA7ERIALS.
TO CONTROL EROSION ON BARE SOIL SURFACES, PLANTS MUST BE ABLE TO GERMINATE AND GROW.
SEEDBED PREPARATION IS ESSENTIAL.
AN EVALUATION SHOULD BE CONDUCTED TO DETERMINE IF LIME IS NECESSARY FOR TEMPORARY SEEDING.
TABLE 331A MAY BE USED TO DETERMINE HE ACTUAL NEED ALONG WITH SUGGESTED APPLICATION
RA TES:
FERTILIZER SHALL BE APPLIED AS 600 LBS/ACRE OF 10-20-10 (14 LBS/1,000 SQ. FT.) OR EQUIVALENT
NUTRIENTS. LIME AND FERTILIZER SHALL BE INCORPORATED INTO THE TOP 2 TO 4 INCHES OF THE SOIL
IF POSSIBLE.
IF THE AREA HAS BEEN RECENTLY LOOSENED OR DISTURBED, NO FURTHER ROUGHENING IS REQUIRED.
WHEN THE AREA IS COMPACTED, CRUSTED, OR HARDENED, THE SOIL SHALL BE LOOSENED BY DISCING,
RAKING, HARROWING, OR OTHER ACCEPTABLE MEANS. TRACKING WITH BULLDOZER CLEATS IS MOST
EFFECTIVE ON SANDY SOILS. THIS PRACTICE OFTEN CAUSES UNDUE COMPACTION OF THE SOIL SURFACE,
ESPECIALLY IN CLAYEY SOILS, AND DOES NOT AID PLANT GROWTH AS EFFECTIVELY AS OTHER METHODS
OF SURFACE ROUGHENING.
SEED SHALL BE EVENLY APPLIED WITH A BROADCAST SEEDER, DRILL, CULTIPACKER SEEDER OR
HYDROSEEDER. SMALL GRAINS SHALL BE PLANTED NO MORE THAN 11 INCHES DEEP. SMALL SEEDS, SUCH
AS KENTUCKY BLUEGRASS, SHOULD BE PLANTED NO MORE THAN 4 INCH DEEP. 07HER GRASSES AND
LEGUMES SHOULD BE PLANTED FROM 4 INCH TO J DEEP.
SEEDINGS MADE IN FALL FOR WINTER COVER AND DURING HOT AND DRY SUMMER MONTHS SHALL BE
MULCHED ACCORDING TO MULCHING, STD. & SPEC. 335, EXCEPT THAT HYDROMULCHES (FIBER MULCH)
WILL NOT BE CONSIDERED ADEQUATE. S7RAW MULCH SHOULD BE USED DURING THESE PERIODS.
AREAS WHICH FAIL TO ESTABLISH VEGETATIVE COVER ADEQUATE TO PREVENT RILL EROSION WILL BE
RE -SEEDED AS SOON AS SUCH AREAS ARE IDENTIFIED.
DESCRIPTION OF EROSION & SEDIMENT
CONTROL
MEASURES:
THE PURPOSE OF THIS LAND DISTURBING ACTIVITY IS TO GRADE HE STOCKTON CREEK SITE FOR A
EROSION AND SEDIMENT CONTROL MEASURES:
RESIDENTIAL DEVELOPMENT. HE TOTAL AREA TO BE DISTURBED WITH THIS PLAN IS 16.29 ACRES.
IT IS ANTICIPATED TO USE CONSTRUCTION ENTRANCES, DIVERSION DIKES, EXISTING SEDIMENT
EXISTING SITE CONDITIONS
BASINS, AND SILT FENCES WILL BE INSTALLED TO CONTROL SURFACE DRAINAGE. TEMPORARY
MOST OF HIS SITE IS FARMLAND WITH A FEW AREAS OF TREES SEPARATING VARIOUS AREAS OF
SEEDING WILL BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE ACTIVITIES.
CLEARED PLOTS OF FARMLAND. OVERALL THE DISTURBED AREA SLOPES SOUTH TOWARDS ROUTE 151.
TEMPORARY STOCKPILE AREAS WILL BE MAINTAINED FROM TOPSOIL THAT WILL BE STRIPPED
THE SITE IS LOCATED TO THE NORTH OF CRITZERS SHOP ROAD (ROUTE 151) AND WEST OF ROUTE
FROM AREAS TO BE GRADED AND STORED FOR LATER SPREADING. STOCKPILE LOCATIONS SHALL
250. THE MAJORITY OF THE SITE DRAINS TOWARDS THE EXISTING CULVERT THAT CROSSES ROUTE
1
BE ON SITE AND SHALL BE STABILIZED WITH A TEMPORARY VEGETATIVE COVER. PERMANENT
ADJACENT AREAS.'
SEEDING WILL BE PERFORMED FOR ALL AREAS WHICH WILL NO LONGER BE EXCAVATED AND
THIS SITE IS BORDERED TO THE EAST BY ROUTE 250 AND TO HE SOUTH BY CRITZERS SHOP ROAD.
WHERE CONSTRUCTION ACTIwnES HAVE CEASED. PERMANENT SEEDING SHALL ALSO BE
GOODLOE LANE IS ALONG THE WEST AND NORTHWEST BORDER OF THE SITE AND OLD TURNPIKE
PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR A YEAR OR MORE.
ROAD EXISTS TO HE NORTH OF HE SITE
SELECT70N OF SEED MIXTURE WILL DEPEND ON HE TIME OF YEAR APPLIED.
OFFSITE LAND DISTURBANCE.
TEMPORARY SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT
IMPROVEMENTS TO BE MADE WITHIN THE VDOT RIGHT-OF-WAY ALONG GOODLOE LANE.
DORMANT FOR MORE THAN SEVEN DAYS. THESE AREAS SHALL BE SEEDED NTH FAST
CRITICAL AREAS:
GERMINATING VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS SELECT70N OF
SILT FENCE SHALL BE MAINTAINED ALONG THE LIMITS OF DISTURBANCE AS SHOWN ON THE PLAN TO
SEED MIXTURE WILL DEPEND ON THE TIME OF YEAR APPLIED.
THE EAST NORTH, AND SOUTH OF THE SITE TO PROTECT THE ADJACENT PROPERTIES. CONTRACTOR
CONSTRUCTION ENTRANCE:
SHALL ENSURE THAT ALL SEDIMENT MAINTENANCE CONTROLS ARE ALONG GOODLOE ROAD TO
ENSURE THAT NO SEDIMENT LEAVES THE SITE AND DRAINS ONTO THE ROAD.
A STABILIZED PAVED CONSTRUCTION ENTRANCE WITH A WASH RACK LOCATED AT POINTS OF
SOILS
VEHICULAR INGRESS AND EGRESS ON A CONSTRUCTION SITE TO REDUCE THE AMOUNT OF MUD
SOILS MAP IS INCORPORATED INTO EROSION CONTROL PLAN PHASE l WITH SOILS DATA INCLUDED
TRANSPORTED ONTO PAVED PUBLIC ROADS BY MOTOR VEHICLES OR RUNOFF.
WITH THIS NARRATIVE.
CONSTRUCTION ENTRANCES SHALL BE INSTALLED AS SHOWN ON THE PLANS TO REDUCE THE
SEQUENCE OF CONSTRUCTION:
AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS.
PHASE l:
SILT FENCE'
1. NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE -CONSTRUCTION MEETING AS REQUIRED.
A TEMPORARY SEDIMENT BARRIER CONSISTING OF A SYNTHETIC FILTER FABRIC STRETCHED
2. PRIOR TO DISTURBANCES, THE LIMITS OF DISTURBANCE SHALL BE FLAGGED AND THE TREE
ACROSS AND ATTACHED TO SUPPORTING POSTS AND ENTRENCHED. TO INTERCEPT AND DETAIN
PROTECTION FENCING SHALL BE INSTALLED.
SMALL AMOUNTS OF SEDIMENT FROM DISTURBED AREAS DURING CONSTRUCTION OPERATIONS IN
J. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION PROCESS
ORDER TO PREVENT SEDIMENT FROM LEAVING THE SITE. TO DECREASE HE VELOCITY OF SHEET
WITHOUT THE APPROVAL FROM THE INSPECTOR ON THE PROJECT.
4. THE PROPOSED CONSTRUCTION ENTRANCE WITH WASH AREAS SHALL BE INSTALLED AS SHOWN ON
FLOWS AND LOW -TO -MODERATE LEVEL CHANNEL FLOWS HE SILT FENCE BARRIERS SHALL BE
THE PLANS. THE CONSTRUCTION ENTRANCE TO BE INSTALLED WHERE CONSTRUCTION VEHICLE
INSTALLED DOWN SLOPE OF AREAS NTH MINIMAL GRADES TO FILTER SEDIMENT LADEN RUNOFF
ROUTES INTERSECT PAVED PUBLIC ROADS, PROVISIONS SHALL BE MADE TO MINIMIZE THE
FROM SHEET FLOW AS INDICATED. THEY SHALL BE INSPECTED IMMEDIATELY AFTER EACH
TRANSPORT OF SEDIMENT BY (VEHICULAR) TRACKING ONTO THE PAVED SURFACE. WHERE
RAINFALL AND MAINTAINED IN ACCORDANCE NTH HE VIRGINIA EROSION & SEDIMENT CONTROL
SEDIMENT IS TRANSPORTED ONTO A PUBLIC ROAD SURFACE, THE ROAD SHALL BE CLEANED
HANDBOOK (VESCH).
THOROUGHLY AT THE END OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY
PERMANENT STABILIZATION:
SHOVELING OR SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET
THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING
WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN HIS MANNER.
SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS. TO
5. INSTALL THE INITIAL CONSTRUCTION MEASURES AS SHOWN ON THE PHASE I EROSION CONTROL
PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT IS ECONOMICAL, ADAPTABLE TO
SHEET THIS INCLUDES (3) SEDIMENT TRAPS (1), SEDIMENT BASIN, WIRE SILT FENCE, AND
SITE CONDITIONS, AND ALLOWS SELECT70N OF THE MOST APPROPRIATE PLANT MATERIALS. TO
DIVERSION DIKES. MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST
STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL BEFORE UPSLOPE
IMPROVE WILDLIFE HABITAT. TO ENHANCE NATURAL BEAUTY. UPON COMPLETION OF
LAND DISTURBANCE TAKES PLACE. A TEMPORARY CULVERT CROSSING MAY BE UTILIZED TO CROSS
CONSTRUCTION ACTIVITIES, ALL AREAS WILL RECEIVE A PERMANENT VEGETATIVE COVER.
THE EXISTING NON PERENNIAL STREAM TO INSTALL PERIMETER CONTROLS.
TEMPORARY SEEDING.,
6. ONCE ALL THE PHASE I EROSION CONTROL ITEMS HAVE BEEN INSTALLED AS SHOWN ON THE
THE ESTABLISHMENT OF A TEMPORARY VEGETA7VE COVER ON DISTURBED AREAS BY SEEDING
EROSION CONTROL PHASE I PLAN AND THE INSPECTOR HAS APPROVED THE EROSION CONTROL
NH APPROPRIATE RAPIDLY GROWING ANNUAL PLANTS. TO REDUCE EROSION AND
MEASURES, THE CONTRACTOR CAN BEGIN THE MINIMUM GRADING OPERATIONS. PRIORITY SHALL BE
SEDIMENTATION BY STABILIZING DISTURBED AREAS THAT WILL NOT BE BROUGHT TO FINAL GRADE
PLACED ON INSTALLING THE PERMANENT 36" CULVERT AND STABILIZING THE BANKS OF HIS
FOR A PERIOD OF MORE THAN 30 DAYS. TO REDUCE DAMAGE FROM SEDIMENT AND RUNOFF TO
CULVERT UP TO THE TEMPORARY CONSTRUCTION ROAD. STABILIZATION MEASURES SHALL BE
DOWNSTREAM OR OFF-S17E AREAS, AND TO PROVIDE PROTECTION TO BARE SOILS EXPOSED
APPLIED TO EARTHEN STRUCTURES SUCH AS DAMS, DIKES, AND DIVERSIONS IMMEDIATELY AFTER
DURING CONSTRUCTION UNTIL PERMANENT VEGETATION OR OTHER EROSION CONTROL MEASURES
INSTALLATION.
CAN BE ESTABLISHED.
Z PERMANENT OR TEMPORARY SOIL STABILIZAT70N SHALL BE APPLIED TO DENUDED AREAS WITHIN
DUST CONTROL:
SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE TEMPORARY SOIL
STABILIZAT70N SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT
REDUCING SURFACE AND AIR MOVEMENT OF DUST DURING LAND DISTURBING, DEMOLITION AND
FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS.
CONSTRUCTION ACTIVITIES
PERMANENT STABILIZAT70N SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR
TO PREVENT SURFACE AND AIR MOVEMENT OF DUST FROM EXPOSED SOIL SURFACES AND
MORE THAN ONE YEAR.
REDUCE THE PRESENCE OF AIRBORNE SUBSTANCES WHICH MAY PRESENT HEALTH HAZARDS,
TRAFFIC SAFETY PROBLEMS OR HARM ANIMAL OR PLANT LIFE.
PHASE ll:
DUST CONTROL MEASURES SHALL BE EMPLOYED TO PREVENT SURFACE AND AIR MOVEMENT OF
8. PHASE ll CONSTRUCTION SHALL INCLUDE CONSTRUCTING STOCKTON CREEK LANE AND STOCKTON
DUST DURING CONSTRUCTION. MEASURES EMPLOYED SHALL BE IN ACCORDANCE KITH HE VESCH.
CREEK COURT. THIS PHASE SHALL ALSO INCLUDE CONSTRUCTING THE ROADSIDE DITCHES AND
TEMPORARY DIVERSION DIKE.
UNDERGROUND STORM SEWER SYSTEM TO TEMPORARILY OUTLET TO SEDIMENT BASIN 1 (BUT WILL
A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED
ULTIMATELY OUTLET TO THE PROPOSED DETENTION BASIN AS SHOWN IN THE SWM PLAN).
AREA WHICH DIVERTS OFF -SITE RUNOFF AWAY FROM UNPR07ECTED SLOPES AND TO A
9. PERMANENT OR TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN
STABILIZED OUTLET, OR TO DIVERT SEDIMENT -LADEN RUNOFF TO A SEDIMENT TRAPPING
SEVEN DAYS AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE TEMPORARY SOIL
STRUCTURE. MAXIMUM EFFECTIVE LIVE IS 18 MONTHS.
STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE AT
ROCK CHECK DAMS:
FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 30 DAYS.
SMALL, TEMPORARY STONE DAMS CONSTRUCTED ACROSS A DRAINAGE DITCH TO REDUCE THE
PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THAT ARE TO BE LEFT DORMANT FOR
MORE THAN ONE YEAR.
VELOCITY OF CONCENTRATED FLOWS, REDUCING EROSION OF THE SWALE OR DITCH LIMITED TO
USE IN SMALL OPEN CHANNELS WHICH DRAIN 10 ACRES OR LESS,' SHOULD NOT BE USED IN
PHASE Ill:
LIVE STREAMS.
IO.ONCE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR
STORM DRAIN INLET PROTECTION.
CAN REMOVE THE SEDIMENT TRAPS. NO ITEM SHALL BE REMOVED UNLESS THE UPSTREAM AREAS
THE INSTALLATION OF VARIOUS KINDS OF SEDIMENT TRAPPING MEASURES AROUND DROP INLETS
ARE STABILIZED AND THE INSPECTOR GIVES PERMISSION.
OR CURB INLET STRUCTURES PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA;
11. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN HE VIRGINIA EROSION AND
LIMITED TO DRAINAGE AREAS NOT EXCEEDING ONE ACRE, AND NOT INTENDED TO CONTROL
SEDIMENT CONTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM
LARGE, CONCENTRATED STORMWATER FLOWS.
ADMINISTRATOR IN ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.
TEMPORARY SEDIMENT TRAP:
12.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
A SMALL PONDING AREA, FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT NH A STONE
NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED
OUTLET ACROSS A DRAINAGE SWALE, 70 DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL
SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY
DISTURBED AREAS FOR ENOUGH TIME TO ALLOW MOST TO THE SUSPENDED SOLIDS TO SETTLE
MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND
OUT MAXIMUM EFFECTIVE LIFE IS 18 MONTHS.
SEDIMENTATION.
TEMPORARY SEDIMENT BASIN:
A TEMPORARY BARRIER OR DAM NH CONTROLLED STORMWATER RELEASE STRUCTURES WHICH IS
PHASE IIIA:
FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. IT
IO.ONCE THE SITE IS STABILIZED AND THE INSPECTOR HAS GIVEN APPROVAL, THE CONTRACTOR
IS USED TO DETAIN SEDIMENT -LADEN RUNOFF FROM DRAINAGE AREAS 3 ACRES OR GREATER
CAN REMOVE THE SEDIMENT BASIN AND CONVERT TO THE PROPOSED DETENTION BASIN. NO ITEM
FOR ENOUGH TIME TO ALLOW MOST OF THE SUSPENDED SOLIDS TO SETTLE OUT IT CAN BE
SHALL BE REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED AND THE INSPECTOR GIVES
CONSTRUCTED ONLY WHERE HERE IS SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY
PERMISSION.
11. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN HE VIRGINIA EROSION AND
MAXIMUM EFFECTIVE LIFE IS 18 MONTHS UNLESS DESIGNED AS A PERMANENT POND BY A
SEDIMENT CONTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE LOCAL PROGRAM
QUALIFIED PROFESSIONAL.
ADMINISTRATOR IN ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.
OUTLET PROTECTION.
12.ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED WITHIN 30
THE INSTALLATION OF RIPRAP CHANNEL SECTIONS AND/OR STILLING BASINS BELOW STORM
DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY MEASURES ARE NO LONGER
DRAIN OUTLETS TO REDUCE EROSION AND UNDER-CUT77VG FROM SCOURING AT OUTLETS AND TO
NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE LOCAL PROGRAM ADMINISTRATOR. TRAPPED
REDUCE FLOW VELOCITIES BEFORE STORMWATER ENTERS RECEIWNG CHANNELS BELOW THESE
SEDIMENT AND THE DISTURBED SOIL AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY
OUTLETS.
MEASURES SHALL BE PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND
CULVERT INLET PROTECTION.
SEDIMENTATION.
A SEDIMENT FILTER LOCATED AT THE INLET TO STORM SEWER CULVERTS WHICH PREVENTS
SEDIMENT FROM ENTERING, ACCUMULATING IN AND BEING TRANSFERRED BY THE CULVERT. IT
SOIL DESCRIPTION
ALSO PROVIDES EROSION CONTROL AT CULVERTS DURING THE PHASE OF A PROJECT WHERE
4E - ASHE LOAM-25Z TO 457 SLOPES. THESE SHALLOW, SOMEWHAT EXCESSIVELY DRAINED SOILS
ELEVATIONS AND DRAINAGE PATTERNS ARE CHANGING, CAUSING ORIGINAL CONTROL MEASURES
ARE FOUND ON MOUNTAIN SLOPES MODERATE RUNOFF, NTH VERY LOW TO HIGH PERMEABILITY.
TO BE INEFFECTIVE.
HYDROLOGIC SOIL GROUP B
SAFETY FENCE. •
7B - BRADDOCK LOAM-27. TO 7% SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON
A PR07EC77VE BARRIER INSTALLED TO PROHIBIT UNDESIRABLE USE OF AN EROSION CONTROL
FANS. MODERATE RUNOFF, NTH MODERATELY HIGH TO HIGH PERMEABILITY. HYDROLOGIC SOIL
MEASURE.
GROUP B.
PERMANENT STABILIZATION.
14D - CHESTER LOAM-157 TO 25X SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON
HILLSLOPES HIGH RUNOFF, NTH MODERATELY HIGH TO HIGH PERMEABILITY.NHYROLOGIC SOIL
PERMANENT SEEDING WILL BE APPLIED TO ALL DISTURBED AREAS AS PER HE PERMANENT
GROUP B.
STABILIZATION OF THIS EROSION & SEDIMENT CONTROL NARRATIVE
14E - CHESTER LOAM-257 TO 45X SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON
AFTER CONSTRUCTION IS COMPLETED, ALL DISTURBED AREAS OF THE SITE WILL BE LIMED,
HILLSLOPES HIGH RUNOFF, WITH MODERATELY HIGH TO HIGH PERMEABILITY. HYDROLOGIC
FERTILIZED, AND SEEDED AS PER CURRENT VDOT STANDARDS. HIS SHALL CONSIST OF
SOIL GROUP B.
THE FOLLOWING.
TOP SOIL - 2' DEPTH
368 - HAYESVWLLE LOAM-2% TO 77 SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON
LIME - 2 TONS/ACRE
HILLSLOPES. MODERATE RUNOFF, NH MODERATELY HIGH TO HIGH PERMEABILITY. HYDROLOGIC
SOIL GROUP B
FERTILIZER - 600 LBS/ACRE OF 15-30-15
SEED - ERNST 5311 CONSERVATION SEED MIX - ERNMX-114 (45 LBS/ACRE PENNLAWN
36C - HAYESVWLLE LOAM-7% TO 15X SLOPES THESE DEEP, WELL DRAINED SOILS ARE FOUND ON
CREEPING RED FESCUE, 37.5 LBS/ACRE ARGILS KENTUCKY BLUEGRASS, 37.5 LBS/ACRE
HILLSLOPES. MODERATE RUNOFF, NH MODERATELY HIGH TO HIGH PERMEABILITY. HYDROLOGIC
PARK KENTUCKY BLUEGRASS, 15 LBS/ACRE ANNUAL RYEGRASS & 15 LBS/ACRE PLEASURE
SOIL GROUP B.
PERENNIAL AFTER THESE AREAS ARE STABILIZED THEY WILL BE MOWED AND MAINTAINED
81B - HURMONT LOAM-27 TO 7% SLOPES THESE DEEP, WELL DRAINED SOILS ARE FOUND ON
ON A REGULAR BASIS.
INTERFLUVES. MODERATE RUNOFF, NH MODERATELY HIGH TO HIGH PERMEABILITY.
HYDROLOGIC SOIL GROUP B.
MAINTENANCE.
IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY
81C - HURMONT LOAM-77 TO 15Z SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON
AND AFTER EACH SIGNIFICANT RAINFALL. SPECIFIC ATTENTION WILL BE GIVEN TO THE
INTERFLUVES. MODERATE RUNOFF, WlH MODERATELY HIGH TO HIGH PERMEABILITY.
FOLLOWING ITEMS.-
HYDROLOGIC SOIL GROUP B.
A. SEDIMENT BASINS AND/OR TRAPS WILL BE CLEANED AND MAINTAINED IN
89B - UNISON SILT LOAM-27 TO 7% SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON
ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK.
FANS. MODERATE RUNOFF, NTH MODERATELY HIGH TO HIGH PERMEABILITY. HYDROLOGIC SOIL
B. ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP THAT
GROUP B.
WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT, THE
GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL BE REPLACED.
89C - UNISON SILT LOAM-71w TO 15X SLOPES. THESE DEEP, WELL DRAINED SOILS ARE FOUND ON
C. ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR
FANS. MODERATE RUNOFF, WITH MODERATELY HIGH TO HIGH PERMEABILITY. HYROLOGIC SOIL
DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE
GROUP B.
REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO THE
TOP of THE BARRIER.
STORMWATER RUN-OFF CONSIDERATIONS.
D. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND IS
MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED.
STORMWATER MANAGEMENT. THE STORMWATER RUNOFF FROM HIS PROJECT DRAINS TEMPORARILY TO
THE SEDIMENT BASIN & TRAPS. THE SEDIMENT BASIN AND THE SEDIMENT TRAPS WILL BE REMOVED AFTER
THE DEVELOPMENT OF THE STOCKTON CREEK DEVELOPMENT PROJECT.
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AS NOTED
SHEET NO.
3
Pared construction entrance forermion control plans 1992 3.05 1992 3.05 TH 0
CONSTRUCTION OF A SILT FENCE CONSTRUCTION OF A SILT FENCE 1992 3.11 1992 3.17 O ��
CONSTRUCTION -70
• MI" (WITH WIRE SUPPORT) (WITHOUT WIRE SUPPORT)
ACCESS 3' SM-2A ASPHALT TOP D�j /'�7�Ft� �I STONE -LINED WATERWAYS SCOTT R. LINS'Z
IZ COURSE IR t. SET POSTS AND EXCAVATE A CXe 2. STAPLE WIRE FENCING TO THE POSTS. 1. SET THE STAKES. 2. EXCAVATE A 47X 4" TRENCH TEMPORARY RIGHT-OF-WAY -01' -WAY C ~
EXISTING TRENCH UPSLOPE ALONG THE LINE UPSLOPE ALONG THE LINE OF LU Lic. No. 035791,E
.r.T/ ; - ., ._ ➢._-R_n _+ - _ PAVEMENT OF POSTS. STAKES.
..- II��I�pI 6MA DIVERSIONS W A5/20/22
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6' MN2!A AGGREGATE BASE VDOT #1
COARSE AGGREGATE MtN
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STONE �70' M'N. �- I hI / IIII / _ 1 I _ IIII FLOW /� 18" Il�-illlll pppp - - -- Z
�C'41 I NJCION ASPHALT PAVED
AC,-- A WASHRACN _ III " III O
FILTER CLOTH-IItR�1RR����I- KEY IN FILTER -- CLOTH 6"-9"
EXISTING I 3. STAPLE FILTER MATERIAL 4. BACKFILL AND COMPACTI% IR PXV MENU FLOW III I III�II TO STAKES AND EXTEND THE EXCAVATED SOIL.
2% t2' MIN.• 4.IT INTO THE TRENCH.V-SHAPED WATERWAY WITH STONE CENTER DRAINNOTE: A GRANULAR Fn,TER MAY BB SUBSTITUTED FOR F[LTER CLOTH. O
17-- -___ 3. ATTACH THE FILTER FABRIC TO THE WIRE 4. BACKFILL AND COMPACT THE
�POSITIVE DRAINAGE FENCE AND EXTEND IT INTO THE TRENCH. EXCAVATED SOIL. TYPICAL GRAVEL STRUCTURE } r
-MUST EXTEND FULL WIDTH Le TO SEDIMENT
OF INGRESS AND EGRESS TRAPPING DEVICF - / - z
OPERATION ��. pl! /�. pl W 0
COMPACTED SOIL Z/3 W4-iz ------- ------- �ILU
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- t 2' LAIN. j1_ IIII /-� IIII - _ __ ________ d _______ _ o 2 L
{POSITIVE DRAINAGE
ITO SEDIMENT ff SHEET FLOW TIVE INSTALLATION 1 _ _ _ - - - " - 1 •• - IIII= a U.1
•'
- -.,.�. .. .- h IwANwNG DEVICE / %F/ (PERSPECTIVE VIEW) 1� .r7'; 4. TB III1111i�..iI _ .� Q
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TgTER Ct OTw I, I I FILTER CLOTH = II�ID IIIII- KEY IN FILTER z °
A A CLOTH 6"-9" Z p
SECTION A -A III ' \ t FL°,a \\�
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EXTENSION OF FABRIC AND WIRE INTO THE TRENCH. > V)
A nunwoun trala lap 01 I sit Illlla'l tic DL`LTlled trllh a IIMIWIIIUII 1 WLII ballLock // \D 6. yUtiMUM PARABOLIC WATERWAY WITH STONE CENTER DRAIN Lu w Do °
SItINoft tall a RIII1111rL1a a H'aSll hoxe Hltll A e'le Ihaalof I nll hcn lUl adtllllAlt FILTER FABRIC NOTE: A GRANULAR FILTER MAY BE SUBSTITUTED FOR FILTER CLOTH. J P
LOltvlml ple�sme. 1l'as6 wale IHlta be Lvued au'a}bolo the e1dL:aRe fo aII /// � """ a �,
�tpfot'eLl L4ih11'_ a ea 10 IQIIOVO ieLhllldll -111 HLVh111Cf11 IIaO be pl et'el[et1 II OIL POINTS A SHOULD BE HIGHER THAN POINT B. o
edema_ storm thaws. ddches OI watacowses. III wIRJ DRAINAGEWAY INSTALLATION TYPICAL EARTHEN STRUCTURE
Z
-I - (FRONT ELEVATION)
0
PAVED WASH RACK Source: Adapted from Installation of Straw and Fabric Filter
Source: Adapted from Installation of Straw and Fabric Filter °
Barriers for Sediment Control
Barriers for Sediment Control, Sherwood and Wyant Plate 3.05-1 Sherwood and Wyant Plate 3.05-2 Source: USDA-SCS Plate 3.17-2
Source: Va. DSWC Plate 3.11-1
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1992 3.08 1992 3.18 1992 3.36 1992 3.38
0
SILT FENCE CULVERT INLET PIPE OUTLET CONDITIONS TYPICAL ORIENTATION OF FENCING AND ARMORING
PROTECTION A A TREATMENT - 9 0
ENDWALL (SOIL STABILIZATION BLANKET) CUT/FILL QUANTITIES: U
0
CHI
i SROLLOW W
FIJI
3d° d SLOPE I VOLUME OF CUT FOR LIMITS OF DISTURBANCE: 3-,500 CU. YARD o N .E
----------- --- ---- ------------------ ---- ° I VOLUME OF FILL FOR LIMITS OF DISTURBANCE: 33,000 CU. YARD Ln
`T---T-' ON SHALLQIY SLOPES, STRIPS OF O
TOE OF FILL I _ PIPE OUTLET TO FIAT NETTING PROTECTIVE COVERINGS DRIP LINE I NET VOLUME OF FILL FOR LIMITS OF DISTURBANCE: 1,5oo CU. YARD
CULVERT - AREA WITH NO DEFINED MAY BE APPLIED ACROSS
I CHANNEL THE SLOPE. j
PLAN v[Ew 6" OF TOPSOIL SHALL BE HAULED OFFSITE TO A PERMITTED (SWPPP) SITE
I
BERM SNOW FENCE I AS EXPLAINED IN EACH PHASE NARRATIVE AND REITERATED HERE, PERMANENT OR
L e WHERE THERE IS A BERM AT THE TOP OF THE SLOPE, _ I TEMPORARY SOIL STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS
I I BRING THE MATERIAL OVER THE BERM AND ANCHOR IT
0 x BEHIND THE BERM. AFTER FINAL GRADE IS REACHED ON ANY PORTION OF THE SITE.
----------------*------�-- ------------ ---- - g AMI AM T a'�
°W STABILIZATION SHALL BE APPLIED WITHIN SEVEN DAYS TO DENUDED AREAS THAT MAY NOT BE f` 0
TOE OF FILL SECTION A -A FILTER CLOTH IOar m e'-B'; RECOMMENDED FORE PERIMETER SLOPE 1 00 � AT FINAL GRADE BUT WILL REMAIN DORMANT (UNDISTURBED) FOR LONGER THAN 3o DAYS. M s
M 3
i
BOARD FENCE r+ PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS THATARE TO BE LEFT DORMANT FOR SILT FENCE ON � SLOPES, APPLY uWi
ISISTOWARDSEMBANKMENT IF FLOW A �- TO THE dfdCTION OF FLOW CORD FENCE MORE THAN ONE YEAR. N 0
IF MINIMUM PROTECTIVE COVERING FLOW El
AVD ANCHOR SECURELY.
FLOW A 3d° (MIN.) - PLASTIC FENCE 01(�
** a ! - CORRECT METHODS OF TREE FENCING �, z
OPTIONAL STONE COMBINATION --- ` - BRING MATERIAL DOWN N
PIPE OUTLET TO WELT,
CZ) 73
DEFINED CHANNEL -"'"` I + 0
1 TO A LEVEL AREA BEFORE d ��� � I i
PLAN VIEW TERMINATING THE INSTALLATION. TURN THE END 1 t II I
UNDER a AND STAPLE AT 1Y INTERVALS. 't., ` V 0
L e r CV J
FLOW ti 0 9. -• DITCH FLOW' _ \ �/'� ~i O
2.5' / U / C
0
I ' d IN DITCHES, APPLY PROTECTIVE COVERING ..
_ PARALLEL TO ME OIRECTON OF FLOW. >
17
USE CHECK SLOTS AS REQUIRED. AVOID Q
SECTION A -A - JOINING MATERIAL IN ME CENTER OF tAYy 'I� 1 0
FILTER CLOTH KEY IN 6"-S': RECOMMENDED FOR ENTIRE PERIMETER ME DRCN IF AT ALL POSSIBLE NF-^►M A/ l� - �YRA� J I 1 O
NOTES: 1. APRON LINING MAY BE RIPRAP, GROUTED RIPRAP. GABION pop J J o
BASKET, OR CONCRETE.
VDOT 13, #357 OR #5 COARSE AGGREGATE CLASS I RIPRAP 2. La IS THE LENGTH OF THE RIPRAP APRON AS CALCULATED 111,+ CORRECT TRUNK ARMORING a
TO REPLACE SILT FENCE IN - HORSESHOE - WHEN 00 O C
HIGH VELOCITY OF FLOW IS EXPECTED USING PLATES O.1B-3 AND 1STON. LL
9. BLESS THAANN TIMES TCH� MUM STONE DIAMETER, BUT NOT TRIANGULAR BOARD FENCE LU 0 � o
0
Source: Adapted from VDOT Standard � H O 3
Sheets and Va. DSWC Plate 3.08-1 Source: Va. DSWC Plate 3.18-1 Source: Adapted from Ludlow Products Brochure Plate 3.36-1 Source: Va. DSWC Plate 3.38-2 O \ U
/H
1992 3.01 1992 3.07 TEMPORARY DIVERSION DIKE 199z 3.14 1992 3.24 Q
SAFETY FENCE SILT FENCE DROP INLET EXAMPLE PLAN VIEWS OF TEMPORARY CULVERT CROSSING U 00
�_
PROTECTION BAFFLE LOCATIONS IN Y U) 0 o
CAPACITY OF HPB CULY M
,,• ,• DROP INLET Com acted Soil SEDIMENT BASINS - W
O oil
2 X 4• WOOD FRAME TOGTHER = FLOW
•■ ••I■ WIITTH GRATE
p VDOT /1 COARSE AGGREGATE C DEEP w 1 1�1
gig ■■ 1/2 DIAMETER I� LU O� E
won a�� 18" min. OF PIPE DR WHICHEVER IS ROCK FlLL COVERE[
Now mom
- FRAME ° 2 - NO SCALE ROCK URGE ANGULAR 1 1 1 -°
.MAX. -Flow
GREATER V J � INFLOW `\`.��\` RISER 1- H� w
R ) ffl'lllllJJl IJJI u 0 z
i� 3' MIN.Of
Ln
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.5' min. NORMAL POOL \ L = THE DISTANCE FROM
4LU
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THE POINT OF INFLOW
AROUND ME BAFFLE TO FILTER TER GLOM
A � H LU z
EXCESS
CORNERS `O THE RISER. A w III
AT
NORMAL POOL
oil RISER U
PERSPECTIVE VIEWS
\� D t -. -B4� ELEVATION LU O y
STAKE PLOW o
PERSPECTIVE VIEW 1t'�
FABRIC VDOT #1 COARSE LARGE ANGULAR Q O
et„-b;: f,a ` lllJJl AGGREGATE ROCK OVER
NORMAL POOL RISER ` INFLOW 11 , I EARTH FILL i ri z
NIV, (0
N
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o . �.. r .�' -.ib`. BAFFLE ` �`. 1 tt t �.. (�f •-
ELEVATION OF STAKE AND �ti `ZD/2 °
FABRIC ORIENTATION DETAIL A �'`
1 E
- i
3
INFLOW 50' MINIMUM I I I I U
I I I I 50' MINIMUM
SPECIFIC APPLICATION w m SHEETS OF 4' X IF L 1/7 EXTERIOR r 6 TOP OF BANK TOP OF BANK
3t u.a rm. PLYWOOD OR EOMVALEM Q W
Pill THIS METHOD OF INLET PROTECTION IS APPLICABLE WHERE THE _
Lj,*,m„�„�` „P,P „• INLET DRAINS A RELATIVELY FLAT AREA (SLOPE NO GREATER RISER CREST ELEVATION ' d En
5' MIN. �.d'ha THAN 5%) WHERE THE INLET SHEET OR OVERLAND FLOWS (NO-
EXCEEDING 1 C.F.S.) ARE TYPICAL. THE METHOD SHALL NOT i a' i JOB NO. o
PERSPECTIVE VIEW PERSPECTIVE VIEW APPLY TO INLETS RECEIVING CONCENTRATED FLOWS, SUCH AS POSTS MIN. SERE 4 SQUARE DIVERSION A D/ OR SWAL AND/ ]22207
IN STREET OR HIGHWAY MEDIANS. I I I L°RFAST 3°INTO ME GROUND. DR SHALE PLAN VIEW OR swAIF L
PLASTIC FENCE METAL FENCE B. O
SCALE °
AS NOTED o
Source: Adapted from Conwed Plastics and Plate 3.01-1 Source: N.C. Erosion and Sediment Control Source: Va. DSWC Plate 3.24-2 a
VDOT Road and Bridge Standards Planningand Design Manual- 1988 Plate 3.07-1 SHEET NO.
� Source: USDA-SCS Plate 3.14-6 N
4 s
H
VIRGINIA EROS/ON & SEDIMENT CONTROL EROSION CONTROL HANOBOOKSPEC/FICATION NUMBER -- % / `♦
SA SAFETYFENCE 3.01 - - / �♦ CCRES CRS --/ // //♦� ♦♦X �% y`.T.M.6 -+ 6L1 I A/A� l/Il I /I I
LO 6
CONSTRUCTION ENTRANCE 3.02 ♦
\ A\�
ti T.M.69-6C
S / ARTI Y ORSMAgK GIBSON, EVERETTEJ_R
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-
1.07ACRES
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TS TS TEMPORARYSEEDING 3.31 \ \ �/ // // / �\ \ \ \ \\ \ - _ `�� \ \ - Sol'.
PS PS PERMANENTSEEDING 332 i / - \. — / / \ \ \ \ \ \ \ �, _ _ \ /
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/ A V A I A \ � / i \� � ."` � A v v ♦ ` _ �'pjT VAROUND SEDIMENT �i
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ION I 1 / / / \ � • AREA TO \ >� \ \ \ `_" ; ( e '„ \\ ` �\ ,\\\
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ENTRANCE SHALLBEINSTALLED 1 / �- -_J__ � � vD
/�/ OPERATED AND MAINTAINED BY I / / -� SEDIMENT TRAP .`� - 1'� 'to
i // 1=z.8zACRES STOCKPILE SURROUNDED \ - \ \oPM CIP
/ // THE CONTRACTOR. ALL / / / / \ BY SILT FENCE B, \
// WASH RACK \ i
j ////CONSTRUCTION TRAFFIC IN THIS / SOILTYPE 6B
AREA SHALL UTILIZE THI // FLOW DIRECTION \ 3
CONSTRUCTION ENTRANCE. / \ �\ 1 AREA TO
V / ARROW (TYP.) ♦ v
i RAP'� SEDIMENT T
w --� I V A �•� gO�LiYP�ir��
/ / / / /j �// /j� \ l \ ♦♦ \ \ m �2 =2.92 ACRES
DRAINAGE DIVIDE
SOIL TYPE \ \ ��
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v FRP NK/D� �E� $e / / / I / A DOTE: CONTRACTOR TO / - - V \ V A A 1 V vv A 1 \ ♦ �\ V A \ V A V ♦ A
C RL/A OVEY / / ENSURE POSTIVE DRAINAGE _ / / \ \ ♦ �AV A v`
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% �\ / / / / / / ��-��<v—._--------- — I ---93° / � // i / / i 9iz, \�
/ / I Q — — — — _ — i / l, �� \ SOILTYPE 36C
- - _ - - - - - _ - - - - PROPOSED LIMITS OF
DISTURBANCE - -=16.z ACRES
(q�I It 4tC0 ' / /// �`� :\ - i. �o \ \ \\ SOICTVPEiyB\ \\
V.
1 \
v90 _ DISTURBANCPROPOSE LIIMACRES\ \
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MONUMENT / \ I / - \ -` - _ / i // \\ \ PROPOSEDFENCE
FOUND A v �JF v - - / / ' / \ v - - AROUND SEDIMENT
/ \ / M:��- - - NOTE: SILT FENCE, SAFETY\ - n
VISED LOT 3 _ -----TRAP r �'
/ Fr v - - � � � � -FENCE, AND TREE PROTECTION v � � - � - '� O �
OCKTS?N CREEK Z6 - -SHALL BE INSTALLED AT LIMITS v / / v n
If / / / 4.;56 ACRES - - - - —SOIL TYPE36C
OF DISTURBANCE. THSE ARE
B.55 4, AG.614 - / \ -
Ay �� _ � � , OFFSET FOR GRAPHICAL \ � -
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AREMEAOFDIDSTU AT BANCEOR �THE LIMITS
NOTE:CONfRACTdI�TO
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E�ITI-LAL_ sLOPPEsr - . / 1 _ \ \ - -- A DI ASIN
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i - - - - - T.M.69-19A9 MONtfRAfA}T- -
-
ss,.wun/r�N� - - - - - - _ STATE -
iJUST,JOSEPHI OTT8c ---__= Ffl _ R --_! -
- - CASEY RLU ST - - _ _- _ _ - �T4ERS S ( 151 - _ z -
_ _ _ _
-- --_ ACRES— _ _
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NUMENT V
-- ---- - FOUND�� v�-- — — MO�" N1Q
OFN
/ �/ /-- \\\ \ ��\ \\ \\ \\ \ \ \ \ \ \ \\\\�\\\ ✓ \ \ ✓ SCOTT R. LINSZ
Lic. No. 035791,n
5/20/22 ,0j
1-0
v v - v vvv v�vvvAvVAA�AA vv vv vv
T.M.69-516 v v
MCCLANAHAN; DENI�F�
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- - - - - - - - DISTURBANCE =16.z9 ACRES APPRbXI AYE
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SA SAFETYFENCE OKSPEC/FICATIONNUMBER 3.01 � / / / / / M.6 -6�L II \ ( \ � � - - - - _
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SF ��F SILT FENCE o / - \ \ \ \ \ \ -
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2.80 ACRES-
\ \ \ \\\ \\ \ \\
\ \ \
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SB 0 SEDIMENT BASIN C3MC-AL Soot vimv�owvw O F/l//A VA V -A A A V A A \ V A
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222207
SHEET NO.
7
IVII X X\ X \
-A \ Sediment Basin Design #1 X ♦♦ \ 1 \ \ \ \
MIN 1' WI SPILLWAY
/ / �' `/.' X ` J X X X X X / \X X X \ \ CREST Or EMERGENCY BM
X I ♦I >. I \ \ I I \ \ \ \ \ \ \ \ \ \ \
E/ / / / ♦♦ X X X X X -'X X V PROPOSED FENCE \ drainage area (acres) 15.2 rvA,HouT SPILLWAY v X ♦PF / V A \ \ \ ��
/ ♦ X X X X AROUND SEDIMENT BASIN basin volumes: (using 2' contour intervals) DESIGN HIGH WATER X X ♦ C X \ \ \ \ \ \
A 125-YR STORM ELEV A I A \
/ X X 7-144 FOOT LONG AND i X X X X V elevation (ft) contour area (st) volume(cy) •I V � ) A V A \ V A SCOTT 7R. COLLINS%
�� �� X X X X X X i - X X X X X X \ X \ X \\ f\ 86.00 8.00 i31.0 55.0 �9 MIN 1 - RISER CREST - A\ X X X X/ X X ♦ / ��■ /�� / \ \\ \\ \\ \\ Lic. No. 035791
i X X 4 FOOT HIGH BAFFLES > X Ds / X X
X X X X \ X \ x
1211 DRY RACE DEWATERIND I X X/ 1�■ \ \ \\ � 5/20/22 ',Oj
X X \ f 864.00 10599.0
/ / I : X X X X X X y pX�HC��� X X \ 866.00 13348.0 2096 wE S,DR�e X / / / X ♦ f \ o �S5
JIMX- Sf�X >--r / 60 \ \ \ 3193 / X / X • '� A \
6' CLASS I RIPRAP X / A X X \ 868.00 16330.0 X X / Xi • I \
u.,.:.. .
EMERGENCY I I / 866 \ e \ f 0.00 0.0 0 SMMENT CLEANOUE POINT
I I A X V C WRA ET " STORAGE REDUCED ST
/
SPILLWAY W/ I . I y / O6 \ 1 X f 0.00 0.0 0 To as C.Y./ ACRE) n'
/ y
_ - - FILTER FABRIC / o !}
UNDERLAYMENT I I / \ X X X / %�a♦ I
(DEPTH=z') / : I I X / 862 X \\ X\ wet storage: y( X Nry
4:1 SIDE SLOPES & / I / p X \ wet storage required c 67*DA 1018 design high water 867.00
CREST ELEV.= 866.87 S / 86Q X \ 9 Q (tio ) 9 9
X dewaterin orifice elevation ft 863.44 to of dam ft 868.00 /
x• / AX s O p O X X 4 0
wet storage provided at this elevation (cy) 1018 top width of dam (ft) 8.0
available volume before cleanout (cy) (34*DA) 517 bottom of basin (ft) 860.0 �X I X Xj f 1
cleanout elevation (ft) 861.96 approx. bottom dimensions: 116k55"
116' !C X distance from cleanout to orifice (ft) (> 1 1.48 upstream face slope: 3:1
}/� ♦ / / \ X X V downstream face slope: 3:1 z
dry storage: X / \ O
dry storage required (cy) (67*DA) 1018 baffles: YES X I �\ W
principle spillway crest (ft) 865.87 length of flow, L (ft) 114 * X �� X, z
\\ X \ X \ dry storage provided at this elevation (cy) 1018 effective width, We (ft) 117 9 } \ X� Z m
5 % \ X X\ diameter of dewatering orifice (in) 8.0 L i We (baffles required if < 2) 1.0 XI X V \ \ X O Q
,J X \ diameter of flexible tubing (in) (orifice+2") 10.0 X `DE U
\ ^`I O
v X \ X X\ collars: YES \\ 6 V• p z
SBi/ X X \ runofr depth of water at spillway crest (ft) 5.83 I X\ X \ X O� z o
C (use 0.45 for bare earth) 0.45 slope of upstream face (Z:1) 3 X X \ O� 0 W)
to (min) 13.2 slope of barrel (Sb) 1.33% X X vXV v A
X 12yr 3.6 Q 2yr 24.4 length of barrel in saturated zone (Ls) 43.11 �C X XED
II X
// II '� 125yr 5.3 Q 25yr 39.5 number collars required 2 \ X \ X � \ \ \T, X \„-y/ \ \� � � J
II X i X dimension of permanent collars 4.2'x4.2' X \ X\ X X \ ♦ c <
X - 868 X I principle spillway: X v X X \ X \X V_ ♦♦ .,A z
VDOT CLASS Al STONE x x X available head ft 1.17 emergency spillway: YES \ \ '\
00 X O I I 68 X X I X XI diameter riser (in) 36 required capacity (Q25-Qp) (cfs) 2.5 �� . \ \ \ \ X ♦♦
1 L=32 W1=6 W2=15 X \ >C spillway capacity, Qp (cfs) 37.0 bottom width (ft) 6 \ �� X \ X \ T' I ♦ '`
i I �i \ \ \ X • ` EDIME STRAP #1 DETAIL
X 966 X 8' WIDE TOP X diameter trash rack (in) 54 slope of exit channel (%) 10% �Ir. \ \ ♦♦
/ AI / X X6 �_OF DAM=868.00, barrel length (ft) 74.94 minimun length of exit channel (ft) 32 �Ih \ \ \ ♦♦ SCALE: 1" = 20 \
QO X - _ ' - X X X 1 X � head on barrel through embankment (ft) 8.00 crest of spillway (ft) 866.87 ���. \ �\ \ \ \ \ ♦♦ \
' - X 862 X diameter of barrel (in) 24
\\
8$ 8X X X \\ NOTE: PLEASE SEE SHEET 11 FOR OUTLET PROTECTION
X 5- '�. DIMENSION CHART FOR SEDIMENT BASIN #1(DIMENSIONS
l _ X 36" DIAMETER HDPE RISER w/ 54" DIAMETER TRASH RACK. ARE THE SAME AS DETENTION BASIN OUTLET PROTECTION)
X C RISER CREST=865.87. RISER TO INCLUDE A 8" DEWATERING \
ORIFICE (INV ELEV.=863-44). RIDER TO BE SETIN A MINIMUM
OF 30" OF COMPACTED SOIL OR AGGREGATE BASE OVER A 8'X8'X3/4"
PERMANENT 74-94 LF X X X xTHICK GALVANIZED STEEL BASE X X REINFORCED CONCRETE FOUNDATION OTEOR E IF STEEL O BASE IS USED SPECIAL
CK
-INV IN=86o; INV OUT=859 95 \ \
RCP BARREL ��' X X ATTENTION SHALL BE GIVEN SO THAT %COMPACTION IS ACHIEVED OVER \
\
1.33%SLOPE THE PLATE. AT TIME OF CONVERSION TO DETENTION BASIN RISER TO BE i
CONVERTED TO PERMANENT RISER STRUCTURE 3.
SEDIMENT BASIN #1 DETAIL
2�SCALE: 1" = 20'
NOTE: SEDIMENT BASIN WILL BE CONVERTED TO DETENTION BASIN IN PHASE IIIA
I I A\ vv V \\ ♦♦�♦A vvv A\ \V A \\ vv \ \
\ 1 \ ♦i \ \ \ 3F Sediment Trap design #2
1 \ III T \\\ ♦♦♦♦♦ \1 \V A A �'\ drainage area (acres) (< 3 ac) 2.92
GRAPHIC SCALE
20 40
( IN FEET )
1 inch = 20 11.
\ \ \\ \ \ \ ♦_I 1 \ \ I rap w umes. ORICNML CREST OF STONE WEIR yyygF•
elevation (ft) area (so wlume(cf) volume(cy) GROUND \`
894 756 0 0.0 ¢� `
\ I I \ V♦♦ \\ V A /}/ ` A DRY STORAGE - VAkMLE
896 1716 2,407 89.2
X \ ♦ \ \ }/} \ C 898 2964 7,031 260.4
\ X X `\ X ♦♦ /}/ \ `r) 900 4500 14,442 534.9 ry
\ \ \\ X\\ X \X ♦ /}/} 0 0 0 0.0 WET STORAGE MAx
\ \ \ \\ X \ \ X \ \\ E11E1 CLOTN DINTUND
ELEV.
\
X X j V \' `D wet storage: gEE PULE 3,13-1 COARSE AGGREGATE_ CLASS I RPRAP
\ X \\ X X \ \ \ L \ 6 YYtlll w/ wet storage required (cy) (67*DA) 195.6
\ \ X OP OF \ bottom of stone weir (ft) 897.24
X \ X \ \ x \ 111 wet storage provided at this elevation (cy) 195.6
\ \ \ SUP slope of wet storage sides 3:1
\ \\ weir length (ft) (6xDA) 17.5
X \ \ \ \ dry storage: bottom of trap elevation (ft) 894
I X \ D \ dry storage required (cy) (67*DA) 195.6 bottom trap dimensions: 14'X54'
I •� X �\ \ \ \ \ \ crest of stone weir 899.0 top of dam elevation (ft) 900
� \ \ f \ \ f \ dry storage provided at this elevation (cy) 195.6 top width of dam (ft) 6'
ya X X \ \\ \ \ \ \ \ slope of dry storage sides 3:1 top trap dimensions 50'X90'
Lk
I I X I CA v � v v v vvv v
R A V A
Sediment Trap design #3
drainage area (acres)(< 3 ac) 1.44
X I 0` \ V A V A trap volumes:
/X L \ \ \ % v� \V elevation (ft) area (so volume(cf) volume(cy)
X > V A\ \ 890 1408 0 0.0
892 2160 3,541 131.2
// X X /X�O i �'♦♦ \ \ \ \ \ 894 3040 8,716 322.8
\ \ \ \ 0 0 0 0.0
/ X yy X X X ♦♦ \ \ \\ \\ \ 0 0 0 0.0
X0 X '♦ X \ \ \ \ \ \\ wet storage:
X ♦v \ \ \ \ \ wet storage required (cy) (67*DA) 96.5
' X X
/ ♦� \ \ \ bottom of stone weir (ft) 891.68
wet storage provided at this elevation (cy) 96.5
X \ \ slope of wet storage sides 2:1
- - - i '♦♦♦ \ X \ } \ \ dry storage:
\ dry storage required (cy) (67*DA) 96.5
crest of stone weir 893.0
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,,,lilir■„♦♦ dry storage provided at this elevation (cy) 89.4
}SEDIMENTTRAP#2 DETAIL slope of dry storage sides 2:1
-----_ _-- 910 SCALE: 1" = 20'
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weir length (ft) (6xDA) 8.6 r 1 \\ \ \ \ \ \ a �
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bottom of trap elevation (ft7os rvo
) 890 I ��i P� \ \\ 222207
bottom trap dimensions: 22'4' � \ � \
top of dam elevation (ft) a9a E D I M E N T TRAP #3 DETAIL \ \ \ _ SCALE
top width ofdam (ft) 6' SCALE: 1" = 20' \ - \ \\ - / 1 fr=20r
top trap dimensions 38'X80' \ \ \ \
SHEET NO.
8 1 � � I
PRE -REDEVELOPMENT STORMWATER MANAGEMENT PLAN, SCALE 1°=80' I I
$TIUART.TAY4OR,StoAgK
�\ Pre -Development Impervious Area Summary p:8.5136-521
\ �;\� r A Water Quantity D.6.�415- 4 7 7 P T
i
Subarea ate ua tt
Y
i
\\ Building/Structure 8,600 Esf
�VlRoads/D
Sidewalks/Concrete 0 / xriveways 0
8,600 sf
�\ Pre -Development Impervious Area Summary
VRRM Limits delineated by ESC LOD, Water Quality —
Building/Structure 7,650 sf
Sidewalks/Concrete 0 sf PLEASE SEE SHEETS 5-7 FOR
\ Roads/Driveways 0 sf ESC BOUNDARY USED FOR
\ VRRM QUALITY CALCULATIONS
7,650 sf
WATERSHED SUMMARY FOR CHANNEL AND FLOOD PROTECTION
Area,
1-year Flow,
2-year Flow,
10-year Flow,
100-year Flow,
CN
ac.
cfs
cfs
cfs
cfs
DA A (Pre-Dev)
61 15.09
3.78
8.57
26.59
70.55
DA A (Post-Dev)
67 15.09
1.75
8.33
24.29
82.00
STORMWATER MANAGEMENT NARRATIVE: TH
— _ = OVERVIEW ��✓ T.M.69-6C �� �� V \ THIS PROJECT PROVIDES STORMWATER MANAGEMENT (SWM) PRACTICES TO MITIGATE THE IMPACTS FROM THE PROPOSED
GIBSON, EVERETT E JR V A V A \ IMPROVEMENTS. CHANNEL AND FLOOD PROTECTION COMPLIANCE ARE MET IN ACCORDANCE WITH MINIMUIM 9 VAC
\ / \ \ 25-870-66 REQUIREMENTS AND WATER QUALITY REQUIREMENTS HAVE BEEN SATISFIED. PLEASE SEE THE ATTACHED
FIELDS \ �SCOTT R. LINSZ
1.07 ACRES STORMWATER MANAGEMENT CALCULATIONS PACKET FOR ADDITIONAL DETAILS PERTAINING TO THIS PLAN'S COMPLIANCE.
— Lic. No. 0357911n
WATER QUALITY SUMMARY
THE BOUNDARY FOR THE ESC LIMITS OF DISTURBANCE WAS USED AS THE BOUNDARY FOR THE VRRM WATER QUALITY •'d•� 5/20/22
— _ — j LL \ \ CALCULATIONS. PLEASE SEE SHEETS 5-7 FOR THIS BOUNDARY. THE STORMWATER QUALITY REQUIREMENTS FOR THIS O��,S
_ \ DEVELOPMENT ARE MET THROUGH THE BEST MANAGEMENT PRACTICE OF PURCHASING NUTRIENT CREDITS. A MINIMUM ,j t E�1
LL PHOSPHOROUS REMOVAL RATE OF 5.63 Ibs/yr IS REQUIRED. THE DEVELOPER WILL PURCHASE NUTRIENT CREDITS PRIOR TO ONAL
THE ISSUANCE OF A LAND DISTURBANCE PERMIT.
PLEASE SEE THE ATTACHED CALCULATIONS PACKET AND THIS SHEET FOR ADDITIONAL DETAILS.
LL LL LL LL LL LL LL LL LL LL `= "" LL"" _ WATER QUANTITY SUMMARY
,/ \ \ \ \\\_� — \ \ \ \ �` LL� LL LL "" LL LL / = LL \� LL '•, . (3 // _ _ \ THE STORMWATER MANAGEMENT PLAN CONTAINS ONE PRIMARY DRAINAGE AREA, SUBAREA A. THIS DRAINAGE AREA
T.M.69-19G ��` �� ��\ �\ �j%LL LL LLLL \\ ter, ;ALL \\ �pRFSTRT T,M,69-SZB \ CAPTURES THE VAST MAJORITY OF THIS PLAN'S PROPOSED IMPERVIOUS AREAS.
VISED LOT ���� \ LL�A LL v V �CQ�R/ %` M_ CCLANAHAN, DEN IS IN THE EXISTING CONDITION, THE MAJORITY OF THE DISTURBED AREA DRAINS TO A NON -PERENNIAL STREAM, WHICH HAS
-SST I UN,,L.Ji'EEK LLC' _ \ \ �� _\ \�\ A _ �/ � �\—�'LL--v T(/ �T/� FIELDS - NO STREAM BUFFER, AND FLOWS SOUTH TOWARDS A CULVERT THAT RUNS UNDER CRITZER SHOP ROAD (ROUTE 151). AS
F1StF(E$ __\ \� '`� \\ �Y\= \•. �RN/J F 2.$Q A �S � THE LIMITS OF THIS PROJECT ARE MUCH SMALLER THAN THE OVERALL DRAINAGE AREA OF THIS NON -PERENNIAL STREAM,
B604tiPC7,614 '1!' \ _ \ �� ioo YEA\ LLLL\,� / LL\ \ALL �, LL\ \ �kF F�SFM THE BOUNDARY OF SUBAREA A IN THE EXISTING CONDITION IS DELINEATED BY THE FUTURE AREA THAT WILL BE CAPTURED
• m� / �"\ AND ROUTED THROUGH THE PROPOSED DETENTION BASIN. MOST OF THE LAND COVER IN THE EXISTING CONDITION IS
/� \ ♦ ♦ FLOODPLAIN \ \ �O Fjy
\\—+� " LSO E \ \� \\\ �.'T �O T CLEARED FARMLAND, WITH A FEW EXISTING STRUCTURES AND WOODED AREAS SURROUNDING THE NON -PERENNIAL
STREAM AND BETWEEN EXISTING CLEARED PLOTS OF FARMLAND.
\ THE PROPOSED DEVELOPMENT HAS ONE CONCENTRATED OUTFACE. ITS DRAINAGE AREA IS DELINEATED BY WHAT IS Z
\- _ l_\ CAPTURED BY THE PROPOSED ROADSIDE DITCHES, WHICH ARE CAPTURED BY THE PROPOSED UNDERGROUND STORM O
�( �'9�6 \ ♦� \/ \ ,7� I ` \\ �� LL " — _ \� \\ ��^.\ \: / . �" �LL .. \ SEWER SYSTEM AND OUTFALL INTO THE PROPOSED DETENTION BASIN. THIS DETENTION BASIN ATTENUATES THE PROPOSED V
\ ♦ ♦ ' �1 �' �, LL LLLL \\ Co
\LL IN SUMMARY, CHANNEL PROTECTION FOR SUBAREA A IS MET THROUGH 9VAC25-870-66 SECTION B.3.a (ENERGY BALANCE)
/// \\ % / / \ \ \ '•. \LL AND FLOOD PROTECTION IS MET THROUGH 9VAC25-870-66 SECTION C.2. b. (10yr. POST FLOW < 10 yr. PRE FLOW). U Q
/ // \ \ \ \ = J/ _ \ \ _ \ \ ♦�, \ \ —_ COMPLIANCE WITH THESE SECTIONS IS ACHIEVED PRIMARILY THROUGH THE PROPOSED DETENTION BASIN. PLEASE SEE THE (O/� O
//� / \\\\\\ /� \ ♦ 924- i ) �'�\ LL LLLL LL V/
y926 \\ \LL LL ATTACHED CALCULATIONS PACKET AND THIS SHEET FOR ADDITIONAL DETAILS. 0 Z
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- �— Ur , w 0 // MONUMENT
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�-21 CASE
AkAU CRE�� Z_soytrt� Imo'\/ _ — _ _ _� MON MENT GRAPHIC SCALE JOB NO.
�T�'� F O_U-- \`� -- 80 0 40 80 160 320SCALE
�L �L O�
pp r-
IN
-�\ ONDUHVIENT 1 inch FEET
E80) ft. SHEET No.
POST -REDEVELOPMENT STORMWATER MANAGEMENT PLAN, SCALE 1°=80' I TH 0
-Vr_ I I I I I \ I I I \ \\
Post -Development Impervious Area �A
Summary SrRT TAYOISMACK jOR SM V A V� \ T.M.69 6C VA V / GIBSON, EVERETT E 1R
/ I _ \ \
�Subarea A,Water Quantity / D.6.5246521 \ \ \ \ FIELDS \� \ \ \ \ � S COTT R. LINS'Z
- - - 1.07 ACRES - v
Building 24,720 sf D.6.3415 704,707 PLAT / - _ \ \ — - - - - - - - - - - \ _ \ \ \ \ \ Lic. No. 035791 n
�� — �j / / \ — \ \ \ \ \ \ \ \ d✓�o 5/20/22
Parking Areas/Roads 83,965 sf / / i � � � % � - _ � - - - - � \
Sidewalks & Concrete 0 sf
108,685 sf / / /l i \ \ \ - ` _ - - - - - LL \ J _ ` \ \ ` �\ TONAL S
Post -Development Impervious Area Summary
VRRM Limits delineated by ESC LOD, Water Quality -
Building 31,200 sf - / / / ° \ \ IS\ �_�\ — ��'� +
PLEASE SEE SHEETS 5 7 FOR \ \ -- �- -�_ V� V (30, A V \
Sidewalks&Concrete Osf \ /
ESC BOUNDARY USED FOR T.M.69-19G ✓ y �4 pR S T.M.69-516 \ \ \
/ \ \ / �e F R \ \ \ \
Parkin Areas/Road 93,085 sf —R REVISED LOTS \ _ �\ \� g VRRM QUALITY CALCULATIONS z �/ � � � �� � ,. �. � \o���`C,4ipT)S MCCLANAHAN, DENIS� \ \ \ \ \ \ \ \ \
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/ _ / / H W
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UR H OR
MONUMENT JOANN Fs6s�° FOUND
47.729 ACRES
tu
VDH w
0MONUMENT 1VONUMENT Tq��V31i — 19A7
.M.6
JUST JOSEPHSCOTT-& --FOUND
-FOUND CRITZERs\S-CRITICALSLOPES VDH GRAP( HIC SCALE
I \
E-i
JOB NoxV. ----------CASEYY RJUST %ARIgD---------- MONUMENT 222� 21 7RES_ Hop -
FOUND
so o ao so iso sza
1 /D.4- H��
/ — '20�--\ VDH— H = 11=10
HRU r
211) ME — IN FEET/ NDVDH finch=80 ft. SHEET NO.
10 N / MONUMENT
DETENTION BASIN DETAIL, SCALE 1"=20'
/ / I
i _J),L
PROPOSED CLASS AI, EC-1 RIPRAP OT
PROTECTION WITH GEOTEXTILE FABRIC TO B
KEYED INTO EX. GROUND 9" MIN. AT ENDS &
ALONG PERIMETER. FABRIC TO OVERLAP A MIN.
OF 9" (L=32'-EXTEND TO RISER, WT=6 FT, W2=15
FT, D-i8" ).
40' W/E GRASS LINED E ERGENCY
SPILLWAY (CREST ELEV.=866.20')
/WITH SIDES SLOPED AT 4:1
it
ko
I 1
�I a
II 00
8' WIDE TOP OF DAM ELEVA
/ I
i
I
\ l
I PROPOSED STIR. co
(IHDPE�STANDPIPE TOPPED
to to
WITH A STEEL WEIR PLATE PROVIDING A 24" OPENING
00
AND TRASHRACK TO SERVE AS A RISER STRUCTURE.
I RISER TO HAVE A RIM ELEV.=864.00', A 6" LOW -FLOW
ORIFICE INVERT ELEV.=86o.00'. RISER TOP, & LOW -FLOW
ORIFICE TO HAVE STATE APPROVED TRASHRACKS. SEE
THIS PLAN FOR TRASHRACK DETAILS, OR EQUIVALENT.
11I �
t-s 8C,2 86o i
%10 Co
862
866
�6
8'
868
/ /g60i
VARIABLE WIDTH SWM ACCESS AND
MAINTENANCE _
I
lo' PRIVATE ASPHALT ACCESS ROAD TO SW FACILIJY
WITH 3.o' PRIVATE ACCESS E SEM9T
PROPOSED CLASS AI, EC-1 RIPRAP OUTLET
111ROTECTION WITH GEOTEXTILE FABRIC TO BE
EYED INTO EX. GROUND 9" MIN. AT ENDS &
0 P
LONG PERIMETER. FABRIC TO OVERLAP A MIN.
OF 9" (L=16', W1=6 FT, W2=i8 FT, D-18")
OUTLET PROTECTION SIZING
TYPE
LENGTH
WIDTH
DEPTH
TO DENTENTION BASIN RISER
VDOT CLASS 1 A
32'
6'15
1.5
OUTEALL OF DETENTION BASIN
VDOT CLASS 1 A
16'
6'18
1.5'
875
875
100-YR PEAK wSE 866.75
PROP
SED STIR. Ay A 36"HOP
10-YR PEAK NSE= 866.12
STAN
PIPE TOPPED WITH A STEEL
2-YR PEAK WSE= 64.46
WEIR
PLATE PROVIDING A 24"
1-YR PEAK WSE= 63.68
OPENING
AND TRASHRACK TO
SERVE
AS A RISER
STRUCTURE, RISER
10
HAVE
RIM ELEV:864.00', A6"
870
7
LOW-1
ELEV.
LOW ORIFICE INVERT
86o.0o'. RISER TOP,&
870
LOW-
LOW ORIFICE TO HAVES
ATE 7
PLAN
OR TRASHRACK DETAIL,
OR
EQUI
LENT.
8'WIDETOPOFDAM
ELEVATION=868'
WITHA
o'WIDERIPRAP LINED
EMERGE
NCY SPILLWAY (CREST
ELEV.=866.2o')
865
865
PROPOSED
GRADE
EXISTING
INV=859.00
GRADE
86o
PIPE Al TO
74.94 � OF
2
8Go
OVV
III 24
CL.
TO PREY
NT FLOATATION
THE RIS
BAPROPOSED
BASIN'S
LOOR SHALL BE
SLOPED
O DRAIN
TOWAR
$R15ER(0.596
MIN.)WITH
SLOPES
POSITIVE
HROUGHOUT
VOOT
ES-i TO OUTLET PRO
ECTION
855
855
TOPREVE
TFLOATATION
THE RISE
BASE SHALL BE
FIRMLYE
BEDDED6"INTO
PROFILESCALES
AN i8" THICK
REINFORCED
-"=5' (VERTICAL)
CONCRET
FOUNDATION
a"=5o'(HORIZONTAL)
THAT 15 5'
S', AND BURIED
BELOW G
OUND.
85o
85O
O
N O
O 0
00
D
ado
m
00 m
10
00
0+00 0+50 1+00 1+50
DETENTION BASIN SECTION
20
8' W IDE TOP OF DAM
ELEVATION =868'
PROPOSED
GRADE
865
86s
I-4-
PROPOS
D40'WIDEVDOTCL.AI
ZIPRAPLINED
EMERGI
NCY SPILLWAY w14:s& FILTER
FABRIC
UNDE
RLAYMENT(STONE DEP
H=iB")SIDES
SPILLWAY CREST
ELEV =866.30
86o
86o
rn
00 N
0
00
00 00
00
0+00 0+50
j
CITZER (ROUT O R5D
HORIZONTAL GRAPHIC SCALE
0 10 20 40 so
( IN FEET )
1 inch = 20 ft.
GENERAL SWM NOTES:
1. STATE APPROVED TRASH RACKS SHALL BE INSTALLED ON ALL ORIFICE
OPENINGS. SEE THIS SHEET, OR EQUIVALENT, FOR DETAILS.
2. CONCRETE FOUNDATIONS SHALL BE INSTALLED ON ALL RISER STRUCTURES
MEETING MINIMUM VESCH 3.14 SPECIFICATIONS, INCLUSIVE OF STIR. 6 SINCE
IT IS LOCATED WITHIN THE DRY BASIN AND IS SU BJECT TO BUOYANCY.
3. CONTRACTOR SHALLHIREATHIRD PARTY GEOTECHNICAL ENGINEER TO
ENSURE THE EMBANKMENTS ARE STRUCTURALLY SOUND. ALL EXISTING
AND PROPOSED FILL MATERIAL AND PROPOSED CONSTRUCTION SHALL BE
APPROVED BY AN ONSITE GEOTECHNICAL ENGINEER PRESENT DURING THE
CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS, AND PRESENT
DURING THE CORE SAMPLING.
4. THE DOWNSTREAM EMBANKMENT SIDE SLOPES OF ALL PERMANENT
FACILITIES, INCLUSIVE OF THE DRY BASIN, SHALL HAVE A MAXIMUM 3:1
SLOPE.
5. CONTRACTOR SHALL EXCAVATE SEDIMENT LADEN MATERIAL IN ANY ESC
SEDIMENT TRAPPING DEVICES AT THE TIME OF THE FACILITIES'
CONVERSIONS TO PERMANENT SWM FACILITIES, IF APPLICABLE. AT SUCH
TIME THE CONTRACTOR SHALL REGRADE THE SEDIMENT TRAPPING DEVICES
TO THE PROPOSED GRADES SHOWN ON THE SWM SHEETS. THE
CONTRACTOR SHALL MINIMIZE SOIL COMPACTION DURING THE
CONVERSIONS.
DETENTION BASIN SPILLWAY SECTION
HORIZONTAL GRAPHIC SCALE
( IN FEET )
1 inch = 50 ft.
VERTICAL GRAPHIC SCALE
2.5 5 10
( IN FEET )
1 inch = 5 ft.
General Construction notes for Stormwater Manaciement Plans
1. All dams and constructed fill to be within 95% of maximum dry
density and 2% of optimum moisture content. All fill material to
be approved by a geotechnical engineer. A geotechnical engineer
is to be present during construction of dams.
2. Pipe1 9 and riser joints are to be watertight within stormwater
management facilities.
3. For temporary sediment traps or basins which are to be
converted to permanent stormwater management facilities;
conversion is not to take place until the site is stabilized, and
permission has been obtained from the County erosion control
inspector.
ALL SLOPES GREATER THAN 3:1 SHALL BE PLANTED WITH NON -EROSIVE
LONG GRASSES OR OTHER TYPES OF NON -EROSIVE PLANTINGS.
GRASS LINED DRY RETENTION BASIN CONSTRUCTION NOTES:
FACILITY PLANTING SPECIFICATIONS:
1. THE DRY BASIN SHALL HAVE TURF GROUND COVER, SUCH AS GRASS OR SOME OTHER FORM OF A VEGETATIVE GROUNDCOVER. LANDSCAPING BEYOND
THIS IS OPTIONAL AND IS NOT REQUIRED.
2. THE PROPOSED INTERIOR SIDE SLOPES OF THE DRY BASIN SHALL BE 3:1 WITH THE TOP OF THE EMBANKMENT SERVING AS A SAFETY BENCH. THE
PROPOSED FLOOR SLOPES SHALL BE GRADED TO PROVIDE POSITIVE DRAINAGE AT ALL TIMES TO THE RISER STRUCTURE.
3. WOODY VEGETATION SHALL NOT BE PLANTED OR ALLOWED TO GROW WITHIN 15 FEET OF THE TOE OF THE EMBANKMENT NOR WITHIN 25 FEET OF THE
PRINCIPAL SPILLWAY STRUCTURE.
1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS.
2. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN.
3. THE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY AT 1-800-552-7001 BEFORE ANY
EXCAVATION).
4. REFER TO THE APPROVED FINAL SITE PLANS FOR ANY DETAILED SITE INFORMATION.
5. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES.
6. THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE DRY BASIN ON A DAILY BASIS.
7. THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR DAMAGE CAUSED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE CONTRACTOR's CONTROL.
FACILITY CONSTRUCTION
1. THE DRY BASIN MAY SERVE AS A SEDIMENT TRAPPING DEVICE DURING PROJECT CONSTRUCTION. IF THIS IS DONE, THE VOLUME SHALL BE BASED ON THE
MORE STRINGENT SIZING RULE EROSION AND SEDIMENT CONTROL REQUIREMENTS VS. STORMWATER TREATMENT REQUIREMENTS). INSTALLATION OF
( Q O )
THE PERMANENT RISER AND BARREL SHALL BE INITIATED DURING THE CONSTRUCTION PHASE, AND DESIGN ELEVATIONS SHALL BE SET WITH FINAL
CLEANOUT OF THE SEDIMENT BASIN AND CONVERSION TO THE POST -CONSTRUCTION DRY BASIN IN MIND. APPROPRIATE PROCEDURES SHALL BE
IMPLEMENTED TO PREVENT DISCHARGE OF TURBULENT WATERS WHEN THE BASIN IS BEING CONVERTED TO A DRY BASIN.
2. THE DRY BASIN SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE FACILITY IS COMPLETELY STABILIZED. IF THE PROPOSED
LOCATION OF THE DRY BASIN WILL BE USED AS A SEDIMENTTRAP OR BASIN DURING THE CONSTRUCTION PHASE, THEN THE FACILITY WILL BE DEWATERED,
DREDGED AND RE -GRADED TO DESIGN DIMENSIONS AFTER THE ORIGINAL SITE CONSTRUCTION IS COMPLETE. MODIFICATIONS SHALL BE MADE TO THE
RISER, ORIFICES AND BARRELS AS REQUIRED SO THATTHEY ARE CONSISTENT WITH THE FINAL CONSTRUCTION SPECIFICATIONS.
3. THE CONTRACTOR SHALL ASSEMBLE CONSTRUCTION MATERIALS ON -SITE, MAKING SURE THEY MEET DESIGN SPECIFICATIONS AND ARE PREPARED AT
STAGING AREAS WHEN POSSIBLE.
4. THE CONTRACTOR SHALL CLEAR AND STRIP THE PROJECTAREA IF REQUIRED TO THE DESIRED SUB -GRADE.
5. INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION OF THE DRY BASIN INCLUDING TEMPORARY DE -WATERING DEVICES AND STORMWATER DIVERSION
PRACTICES. ALL AREAS SURROUNDING THE DRY BASIN THAT ARE GRADED OR DENUDED DURING CONSTRUCTION SHALL BE PLANTED WITH TURF GRASS,
NATIVE PLANTINGS, OR OTHER APPROVED METHODS OF SOIL STABILIZATION.
6. CONTRACTOR SHALL EXCAVATE THE CORE TRENCH AND INSTALL THE SPILLWAY PIPE DURING THE ESC PHASE.
7. CONTRACTOR SHALL ALSO INSTALL THE RISER, OUTFLOW STRUCTURE AND/OR THE BARREL(s) WITH PERMANENT COLLARS DURING THE ESC PHASE.
CONTRACTOR SHALL ENSURE THE TOP INVERT OF THE OVERFLOW WEIR IS CONSTRUCTED LEVEL AT THE DESIGN ELEVATION.
8. THE CONTRACTOR SHALL CONSTRUCT THE EMBANKMENT AND ANY INTERNAL BERMS IN 8-TO 12-INCH LIFTS, COMPACTION SHALL BE COMPLETED IN LIFTS
WITH APPROPRIATE EQUIPMENT. THE CONTRACTOR SHALL ALSO ADHERE TO THE CLAY LINER SPECIFICATIONS OUTLINED IN TABLE 14.4 BELOW:
Table 14.4. Clay Liner Specmcarions
Property
I Test Method
Unit
Specification
Permeability
ASA D-2434
Cmisec
I 1 X 10FO
Ptasticity Index of Clay
I ASTM D-4231424
%
I Not less Iran 15
Liquid Limit of Clay
ASTM D-2216
%
I Not less than 30
Clay Particles Pass
ASTM DA22
%
I Not less than 30
Clay Compaction
ASTM D-2216
%
95%of stantlaM proctor density
.source: Virginia warnlwater Management hlanaooaw tiY )
9. UPON COMPLETION OF THE EMBANKMENT GRADING, THE CONTRACTOR SHALL EXCAVATE/GRADE UNTIL THE APPROPRIATE ELEVATION AND DESIRED
CONTOURS ARE ACHIEVED FOR THE BOTTOM AND SIDE SLOPES OF THE DRY BASIN.
10. CONTRACTOR SHALLTHEN CONSTRUCTTHE EMERGENCY SPILLWAY IN CUTOR STRUCTURALLY STABILIZED SOILS.
11. THE CONTRACTOR SHALLTHEN FINISH CONSTRUCTION OF ALL OUTLET STRUCTURES, INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION IF
APPLICABLE.
12. THE CONTRACTOR SHALL NEXT STABILIZE EXPOSED SOILS BY HYDROSEEDING OR SEEDING OVER STRAW.
FACILITY MAINTENANCE:
MAINTENANCE OF THE DRY BASIN IS DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE FACILITY. DURING THESE
INSPECTIONS THE FOLLOWING TASKS SHALL BE PERFORMED BY THE CONTRACTOR IN THE FIRST YEAR FOLLOWING INSTALLATION, AND THE OWNER
THEREAFTER:
1. MEASURE SEDIMENT ACCUMULATION LEVELS IN THE DRY BASIN.
2. MONITOR THE GROWTH OF THE GROUNDCOVER.
3. INSPECT THE CONDITION OF STORMWATER INLETS TO THE DRY BASIN FOR MATERIAL DAMAGE, EROSION OR UNDERCUTTING.
4. INSPECT THE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY GROWTH,
OR GULLY EROSION THAT MAY UNDERMINE EMBANKMENT INTEGRITY.
5. INSPECTTHE DRY BASIN's OUTFALLCHANNEL FOR EROSION, UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, etc.
6. INSPECT CONDITION OF PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SPALLING, JOINT FAILURE, LEAKAGE, CORROSION OR OTHER FAILURES.
7. INSPECT CONDITION OF ALLTRASH RACKS, REVERSE SLOPED PIPES OR FLASHBOARD RISERS AS APPLICABLE FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS
ACCUMULATION OR OTHER FAILURES.
8. INSPECT MAINTENANCE ACCESS TO ENSURE IT IS FREE OF WOODY VEGETATION, AND CHECK TO SEE WHETHER VALVES, MANHOLES AND LOCKS CAN BE
OPENED AND OPERATED AS APPLICABLE.
9. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE DRY BASIN FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING.
10. OWNER OR CONTRACTOR SHALL MAKE NEEDED REPAIRS IMMEDIATELY.
FACILITY INSPECTION:
MULTIPLE INSPECTIONS ARE CRITICAL TO ENSURE THE DRY BASIN IS PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY
THE CONTRACTOR, THE CONTRACTOR SHALL BE RESPONSIBLE FOR CONTACTING THE ENGINEER AND INSPECTOR PRIOR TO INSTALLATION. MULTIPLE SITE
VISITS AND INSPECTIONS ARE REQUIRED TO BE SCHEDULED BY THE CONTRACTOR WITH THE ENGINEER AND INSPECTOR DURING THE FOLLOWING STAGES OF
THE DRY BASIN's CONSTRUCTION PROCESS:
1. PRE -CONSTRUCTION MEETING
2. INITIALSITE PREPARATION INCLUDING INSTALLATION OF PROJECT E&S CONTROLS
3. EXCAVATION/GRADING (e.g., INTERIM/FINAL ELEVATIONS) )
4. INSTALLATION OF THE EMBANKMENT, THE RISER/PRIMARY SPILLWAY, AND THE OUTLET STRUCTURE(s).
4. DRY BASIN INSTALLATION (e.g., INTERIM AND FINAL ELEVATIONS)
5. PLANTING PHASE FOR TURF GROUNDCOVER
6. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE)
Splash Block Instructions
Patent -pending cut-out to allow;(
Before installation of the Splash Block, or any I P g ..f
rain diverting accessory, make sure the grade I for fitment of downspout With
around the foundation slopes away from the I low clearance of elbow
house. There should he a 6 inch fall in the Post
10 feet from the house. -
e_ 10 Feet
6 in I
Water directing chevron pattern
reduces washout
AMERIMAX
amenmax.com 1 800-347-2586
InfotRemenmas.win
Hole for landscape spike at
front of splashblock allows
it to be secured to ground
StormRaxn-
ROUND SERIES TRASH RACK (OR EQUIVALENT)
CONCRETE MANHOLE
STANDARD Be INCH RACK SHOWN
DIMENSIONS IN INCHES
PLAN
SIDE VIEW
StDm RSI Round Series for Concrete Manhole
Part No
SSwA
DIM
DYC
Min ID
MIn OD
W24
Vill
14%
IS
26
30
Asv
21
14
40.4
36
43
sae
n
v
Sit.
4a
57
FS-60
27
18%
66H
NI
70
Plastic Solutions, Inc. CUSHI En
O V ` VO was 4396, whatever. VA 27604
4' 738 MrC,laee a4 VAganer. VA 72403
16A1 E77-sni plains PROEM
154a1772-nl9W
hlgx//www.lfazensosadon.mn
*ua4
ISOMETRIC
CONCRETE STRUCTURE DIMENRONS
INSIDE STRUCTURE DIMENSION
OUTSIDE STRUCTURE DIMENSION
AVAILABLE OPMNS
CROSS BRACING FOR OVERHAM
HOPE ANTI -VORTEX PLATE
CITE
OIIAIIN SM
Amour
DETAIL
1 /2" zinc plated nook
attached with 3/9' farlener
®®® 2-1/8' die. holm
0 ()
Isometric
L/4- HOPE plate (optional)
Fife
o utverl j S'
r" x HDPE elruclurnl plastic with
O 2-1/8" hole. and 1/4" plate
menufacturY cd b Plastic
O00 Solution. ins. or equal
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.Section macumclurea by Plastic
3oluliona L r or rgcal
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lill'\]PLASTIC
p o Ru• clAfl
SOLlTfIONS �ler Tiam1'• am
INC. 877-e77-6727
m.pls.e-Wularnm
SECTION A-9: TYPICAL GRAPMCAL DETAD.S
- ffom09MDUS fill
f---------�
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J'�Cut off trench-4' Wow suitable,
I I
material
Sol or rack L___-_-----J
TYPICAL HOMOGENEOUS
EMBANKMENT
TraaiOon fill
Dale W gro el
4Bbnkel
Pipe outlet Coa l
oraur�d
Perforated collector ourdation dmin drain
FOUNDATION DRAIN BLANKET DRAIN
/ Gvin
SnM, qad a met
dadn ousel
Rock la grovel
^ - Red,to t, drain
vTransition fiber TrOnsa'wn filler
CHIMNEY DRAIN TOE DRAIN
as
Source_ SCS Engineermg Field Manual
Figure A -la. Homogeneous Embankments w,'.S'eepage Controls
EMBANKMENT NOTES:
AFTER AN INVESTIGATION OF THE SITE's SOILS, SITE VISITS, AN ANALYSIS OF THE SURVEYED TOPOGRAPHY AND AN EXAMINATION OF VA DEQ
APPENDIX A: EARTHEN EMBANKMENT, THE APPLICANT HAS PROVIDED A COMPREHENSIVE EMBANKMENT DESIGN THAT DOES NOT NEED A
GEOTECHNICAL STUDY AT THIS TIME, SUCH IS THE CASE DUE TO THE PRECAUTIONARY EMBANKMENT DESIGNS PROPOSED. A SUMMARY OF THE
EMBANKMENT DESIGN REQUIREMENTS ARE LISTED BELOW, MANDATING THE CONTRACTOR MEET THESE REQUIREMENTS AT A MINIMUM.
THE EMBANKMENTS SHALL HAVE A COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN IN THIS
PLAN. BERMS AND SPILLWAYS SHALL BE STABILIZED WITH EC-3 MATTING & RIPRAP AND THE REMAINING DISTURBED SLOPES SHALL BE STABILIZED
WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF MIL, CL, SC OR GC SOILS & BE FREE OF WOOD, ROOTS, ROCKS OR ANY OTHER
NON COMPACTING SOIL. COMPACTED FILL SHALL BE PROCTOR MAXIMUM DRY DENSITY ASTM D698 AND HAVE A MINIMUM OF 95% OF
MAXIMUM DRY DENSITY AND 2% OF OPTIMUM MOISTURE CONTENT. ALL FILL MATERIAL AND CONSTRUCTION SHALL BE APPROVED BY AN ONSITE
GEOTECHNICAL ENGINEER PRESENT DURING THE CONSTRUCTION OF THE EMBANKMENTS AND FILL AREAS.
COUNTY OF ALBEMARLE
Department of Community Development
Construction Record Drawings (As -built) for VSMP
The following is a list of information required on construction record drawings for
stormwater facilities (reference Water Protection Ordinance 17-422). It is preferable that the
construction record drawing be prepared by someone other than the designer. Please do not
provide design drawings as construction record drawings.
A. A signed and dated professional seal of the preparing engineer or surveyor.
B. The name and address of the firm and individual preparing the drawings on the title sheet.
C. The constructed location of all items associated with each facility, and the inspection records to verify
proper dimensions, materials and installation. The items include, but are not limited to the following:
1. Inspection Records and photographs for pipe trenches and bedding, including underdrains.
2. Video Pipe Inspection for any pipes which are not accessible or viewable.
3. Updated Location with geo-coordinates of all facilities.
4. Verified Drainage Area maps for the drainage area treated, and for drainage to the facilities.
5. Current physical and topographic survey for all earthen structures. Ponds should include a survey
of the pond bottom. Surveys should verify pond volumes are per design. Corrections may be required
for alterations from the design.
6. Plants, location and type.
7. Plans and profiles for all culverts, Pipes, Risers, Weirs and Drainage Structures - Display the
installed type of drainage structures, culvert/pipe size, weirs, materials, inlets or end treatment(s),
inlet and outlet protection, alignment and invert elevations compared to design.
8. Computations: For significant deviations from design, provide sealed computations verifying that
the as -built condition is equivalent or better than design.
9. Ditch Lines - Display the constructed location of all ditch lines and channels, including typical
sections and linings.
10. Easements - Show all platted easements with dead book references labeled. Facilities and drainage
must be within platted easements. Provide copies of recorded documents.
11. Guardrail, fences or other safety provisions - Display the constructed location of all safety
provisions; fences, guardrail, including the type, length and applied end treatments, compared to
design.
12. Material layers - biofilter media, stone layers, sand layers, keyways and cores must be verified as to
material types and depths. Include inspection reports, boring or test pit reports and materials
certifications. Biofilter media must be an approved state mix.
13. Access roads - show location of access roads, surface treatment, drainage, etc, as applicable.
14. Compaction reports are required to verify fill compaction in dams.
15. Manufacturers certifications for proprietary BMP's certifying proper installation and functioning.
SCOTTIR. C'OLLINS%
Lic. No. 035791,n
5/20/22
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Project Sbddon Creek
Plan Sheet No.
Designer UN
Sheet 1 of 1
Culvert
Rev. Date
Data 5I09122
STATION:
AHN'Controls
HYDROLOGICAL DATA:
100 yr. Flood plain elev.
Design AHW depth elev.
Structures elev.
fired. TVtelev.
Culvert#1: DA=35.91 ac., CN=59, Tc=24.2 min., 2-year Q=11.50 cis,10-year
-
_
Q=44.09
CIS, 100-year Q=115.56 cis
Shoulder
=
elev. 1354.6
=
CL elev. 1355.22
DISCHARGES USED
RISK ASSESSMENT
ADT
3kew ° Cover
"
0 2 = 11.5 CFS
Deburs Available
Length
0 10 = 44.0 CCFS
Overtopping Stage
0 100 = 115.56 CFS
Flood Plain Management
Inv. El. 873.92 So= 2.08%
Inv. El. 868.87
0 CFS
Criteria and Sgnifcant Impact
Orig. Gr. Elev. L= 243
Orig. Gr. Ekv.
_=
0 = CFS
CULVERT TYPE & SIZE
Q
CIE
HEADWATER COMPUTATIONS
CONT.
HIM
ELEV.
OUTLET
VELOCITY
7�
COMMENTS
INLET CONIT.
OUTLET CONTROL
HWID
HW
Ke
do
(daD)12
ho
H
LSo
HW
C.M.
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Proposed36' RCPCulvert(2yr)
11.5
11.5
0.49
1.5
0.5
1.1
2.04
0.66
0.5
5.0
-3.9
1.5
5.05
E%1
VDOTSTD.EW-1CIass IIOuIk Protcfon
Proposed 36' RCP Culvert(10 yr)
44.1
44.1
1.18
3.5
0.5
2.2
2.58
3.58
0.5
5.0
-1.0
3.5
8.08
Proposed 36' RCP Culvert (100 yr)
115.6
115.6
4.28
12.8
0.5
3.0
3.00
17.34
0.5
5.0
12.8
12.8
16.35
Design Flood Exceed. Pob.
_ ELY.
Overtop Flood Exceed. Prob,
Bev.
SUMMARY & RECOMMENDATIONS:
Base Flood l%Exceed. Prob.
_
Elev.
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