HomeMy WebLinkAboutWPO202000011 Plan - VSMP 2020-06-05GENERAL NOTES
OWNER: ERIC TRUMP LAND HOLDINGS, LLC
100 WINERY HILL LANE
CHARLOTTESVILLE, VA 22902
ENGINEER: COLLINS ENGINEERING
200 GARRETT ST, SUITE K
CHARLOTTESVILLE, VA 22902
(434) 293-3719
TAX MAP NO.: 10200-00-00-035BO DB 4030 PG 451
TOTAL PROJECT AREA: 129.68 ACRES TOTAL
PROJECT AREA: 1.37 ACRES (TOTAL LIMITS OF DISTURBANCE)
2.15 ACRES (LIMITS OF VSMP PLAN)
ZONING: RURAL
USE: FARM WINERY
TOPO & SURVEY: SURVEY PROVIDED BY KIRK HUGHES & ASSOCIATES DATED
FEBRUARY, 2020.
DATUM: NAD83, NAVD 88
EXISTING TERRAIN: AGRICULTURAL AND WOODED
PROPOSED: EROSION CONTROL AND STORMWATER MANAGEMENT PLAN
FOR THE PROPOSED WINERY EXPANSION
WATER SUPPLY PROTECTION AREA: NOT APPLICABLE WITH THIS SITE PLAN AMENDMENT
WATERSHED / WATER RESOURCE AREA: RIVANNA RIVER DRAINAGE BASIN
DENSITY: NOT APPLICABLE
GREENWAY DEDICATION: NOT APPLICABLE
BUILDING HEIGHTS: MAXIMUM HEIGHT SHALL NOT EXCEED 35 FEET
SETBACKS: FRONT - 25' FROM INTERNAL PRIVATE STREETS
SIDE - 25' MINIMUM
REAR - 35' MINIMUM
AGRICULTURAL/ FORESTAL DISTRICT: THE SUBJECT PROPERTY IS LOCATED WITHIN THE
LANARK AGRICULTURAL -FORESTAL DISTRICT
STREAM BUFFERS/FLOODPLAIN: THIS PROPERTY IS NOT IN A FLOODPLAIN ACCORDING
TO FEMA MAP #51003CO420D
IMPERVIOUS AREAS (WITHIN LIMITS OF PROJECT AREA):
EXISTING PROPOSED
GRAVEL: 1,925 SF 14,125 SF
BUILDINGS: 9,975 SF
PERCENT OF IMPERVIOUS COVER WITHIN PROJECT AREA:
TOTAL IMPERVIOUS COVER = 26,025 SF / 1.37 ACRES = 43.6%
CRITICAL SLOPES: NO CRITICAL SLOPES ARE WITHIN THE LIMITS OF THE
PROJECT AREA.
BURIAL SITES: NO CEMETERIES WERE FOUND DURING FIELD INVESTIGATION
OF THE SITE WITHIN THE LIMITS OF THE PROJECT AREA.
STORMWATER MANAGEMENT: THE PROPOSED STORMWATER MANAGEMENT PLAN
COMPLIES WITH CURRENT PART IIB SWM REQUIREMENTS.
MINIMUM WATER QUALITY REQUIREMENTS ARE MET
THROUGH THE USE OF A LEVEL SPREADER THAT RELEASES
RUNOFF IN A SHEET FLOW CONDITION TO A CONSERVED AREA
WITH TYPE B SOILS. MINIMUM WATER QUANTITY
REQUIREMENTS ARE MET THROUGH THE USE OF A DRY
DETENTION BASIN THAT ATTENUATES FLOWS RESULTING
FROM THE PROPOSED IMPROVEMENTS.
NOTES:
CONTRACTOR SHALL VERIFY LOCATION AND ELEVATION OF ALL UNDERGROUND UTILITIES SHOWN ON PLANS
IN AREAS OF CONSTRUCTION PRIOR TO STARTING WORK. CONTACT ENGINEER IMMEDIATELY IF LOCATION OR
ELEVATION IS DIFFERENT FROM THAT SHOWN ON THE PLANS, IF THERE APPEARS TO BE A CONFLICT, AND
UPON DISCOVERY OF ANY UTILITY NOT SHOWN ON THE PLANS.
THE CONTRACTOR MUST LOCATE ALL SURFACE AND SUB -SURFACE UTILITIES PRIOR TO ANY WORK ONSITE.
TRUMP WINERY EXPANSION
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V MP PLAN
SCOTTSVILLE MAGISTERIAL DISTRICT
ALBEMARLE COUNTY, VIRGINIA
TMP 102-37
SALVATONE J. & G&L CANGIANO
DB 4553-393
PARCEL ONE
DB 4016-674 PLAT
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TMP 102-39
TRUMP VINEYARD ESTATES LOT 3 OWNER LLC
DB 4096-535
DB 515-329 PLAT
N 44°38'03" E 123.14'
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N CUT 2'54" E 57.89'
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N 53'53'03" W 50.16'
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N 36°38'52" E 24.90'
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DB 4030-451
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129.6832 AC.
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00077-378 PLAT
ALBEMARLE HOUSE DR.
MAP
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TITLE SHEET
COVER SHEET 1
EROSION & SEDIMENT CONTROL NARRATIVE AND DETAILS 2
EXISTING CONDITIONS AND EROSION & SEDIMENT CONTROL PHASE I PLAN 3
EROSION & SEDIMENT CONTROL PHASE II AND GRADING & DRAINAGE PLAN 4
STORMWATER MANAGEMENT PLAN 5
STORMWATER MANAGEMENT DETAILS 6
TOTAL SHEETS 6
LEGEND
EDGE OF PA VEMEN T
CURB
SOIL BOUNDARY
BUILDING
PROPOSED ASPHALT
STREAM BANKS
100' WPO BUFFER
PROPOSED EASEMENT, VARIES
WITH SHEET
DRAINAGE PIPE
BENCH MARK
VDOT STANDARD STOP SIGN
PROPOSED HANDICAP PARKING
SPACE STRIPING
INLET PROTECTION
— — —200— —
EXISTING CONTOUR
zoo
PROPOSED CONTOUR
0
SEDIMENT TRAP OR BASIN
DRAINAGE DIVIDE
LIMITS OF CLEARING/GRADING
LIMITS OF DISTURBANCE
DI VERSION DIKE
RIGHT— OF— WAY DIVERSION
TREE PROTECTION
SAFETY FENCE
X X X X X X X—
SILT FENCE
PROPERTY LINE
° ° a
PROPOSED CONCRETE
O O 0 0 0 0 0
100 YR. FLOODPLAIN
RIPRAP, OUTLET PROTECTION OR
CONSTRUCTION ROAD STABILIZATION
APPROVALS
SIGNATURE
DATE
DEPARTMENT OF COMMUNITY DEVELOPMENT
PLANNING/ZONING
ENGINEER
INSPECTIONS
ARB
DEPARTMENT OF FIRE RESCUE
ALBEMARLE COUNTY SERVICE OF AUTHORITY
VIRGINIA DEPARTMENT OF TRANSPORTATION
HEALTH DEPARTMENT
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JOB NO.
192178
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AS SHOWN
SHEET NO.
1
EROSION & SEDIMENT CONTROL MEASURES:
STRUCTURAL EROSION AND SEDIMENT CONTROL PRACTICES SHALL BE IN ACCORDANCE WITH THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK.
STRUCTURAL PRACTICES USED IN THIS SECTION CONSIST OF THE FOLLOWING:
3.01 SAFETY FENCE.•
A PROTECTIVE BARRIER INSTALLED TO PREVENT ACCESS TO AN EROSION CONTROL MEASURE. TO PROHIBIT THE UNDESIRABLE USE OF AN EROSION CONTROL MEASURE
BY THE 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 WITH 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 THE
PLANS TO REDUCE THE AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS.
3.05 SILT FENCE.•
A TEMPORARY SEDIMENT BARRIER CONSISTING 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 CONSTRUCTION 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. THE 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 WITH THE VIRGINIA 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 PROTECTION APPLIES WHERE STORM DRAIN INLETS ARE TO BE MADE
OPERATIONAL BEFORE PERMANENT STABILIZATION OF THE CORRESPONDING DISTURBED 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 UNPROTECTED 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 PROTECT
DISTURBED AREAS AND SLOPES OR RETAIN SEDIMENT ON SITE DURING CONSTRUCTION. THESE STRUCTURES GENERALLY HAVE A LIFE EXPECTANCY OF 18 MONTHS OR
LESS, WHICH CAN BE PROLONGED WITH PROPER MAINTENANCE.
3.12 DI VERSION.
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 THE 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.
3.14 TEMPORARY SEDIMENT BASIN:
A TEMPORARY BARRIER OR DAM WITH A CONTROLLED STORMWATER RELEASE STRUCTURE FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A
DRAINAGEWAY. 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 DEVICES PLACED AT THE OUTLETS OF PIPES OR PAVED CHANNEL SECTIONS. TO PREVENT
SCOUR AT STORMWATER OUTLETS, TO PROTECT THE OUTLET STRUCTURE, AND TO MINIMIZE THE POTENTIAL FOR DOWNSTREAM EROSION BY REDUCING THE VELOCITY AND
ENERGY OF CONCENTRATED STORMWATER FLOWS. APPLICABLE TO THE OUTLETS OF ALL PIPES AND ENGINEERED CHANNEL SECTIONS.
3.19 RIPRAP:
A PERMANENT, EROSION -RESISTANT GROUND COVER OF LARGE, LOOSE, ANGULAR STONE WITH FILTER FABRIC OR GRANULAR UNDERLINING. TO PROTECT THE SOIL FROM
THE EROSIVE FORCES OF CONCENTRATED RUNOFF, SLOW THE VELOCITY OF CONCENTRATED RUNOFF WHILE ENHANCING THE POTENTIAL FOR INFILTRATION, AND TO
STABILIZE SLOPES WITH 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 THE VELOCITY OF CONCENTRATED STORMWATER FLOWS, THEREBY
REDUCING EROSION OF THE SWALE OR DITCH. THIS PRACTICE ALSO TRAPS SEDIMENT GENERATED FROM ADJACENT AREAS OR THE DITCH ITSELF, MAINLY BY PONDING OF
THE STORMWATER RUNOFF. THIS 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 WITH 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 PROTECTION TO BARE SOILS EXPOSED DURING CONSTRUCTION UNTIL
PERMANENT VEGETATION OR OTHER EROSION CONTROL MEASURES CAN BE ESTABLISHED.
3.32 PERMANENT STABILIZATION. -
THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING SEED. TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED
AREAS. TO PERMANENTLY STABILIZE DISTURBED AREAS IN A MANNER THAT IS 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 PROTECTING THE SOIL SURFACE FROM RAINDROP
IMPACT AND REDUCING THE VELOCITY OF OVERLAND FLOW. TO FOSTER THE GROWTH OF VEGETATION BY INCREASING AVAILABLE MOISTURE AND PROVIDING 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 THE SEASON SHOULD BE MULCHED USING ORGANIC MULCH. MULCH MAY BE USED TOGETHER WITH PLANTINGS OF TREES SHRUBS OR CERTAIN
GROUND COVERS WHICH DO NOT PROVIDE ADEQUATE SOIL STABILIZATION BY THEMSELVES, CAN BE USED IN CONJUNCTION WITH TEMPORARY SEEDING.
3.37 TREES, SHRUBS. VINES & GROUND COVERS. -
STABILIZING DISTURBED AREAS BY ESTABLISHING VEGETATIVE COVER WITH 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
3.38 TREE PRESERVATION AND PROTECTION:
PROTECTION OF DESIRABLE TREES FROM MECHANICAL OR OTHER INJURY DURING LAND DISTURBING AND CONSTRUCTION ACTIVITY. TO ENSURE THE SURVIVAL 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 OTHER 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 THE 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 WITH THE VESCH.
* VIRGINIA EROSION & SEDIMENT CONTROL 1992 3.36
EROSION CONTROL HANDBOOK SPECIFICATION NUMBER
a
STRAW BAIL BARRIER
3.04
I I I I I
Se
TEMPORARY DIVERSION DIKE
3.09
ST
t(%° o�E4=
TEMPORARY SEDIMENT TRAP
3.13
(SB)
®
SEDIMENT BASIN
3.14
0INLET
0
PROTECTION
3.07
SFX
SIL T FENCE
J. 05
X X
CE
0 ( 0
0no
CONSTRUCTION ENTRANCE
3.02
CD
'
CHECK DAM
3.20
FD
TEMPORARY FILL DIVERSION
3.10
D V
DIVERSION
3.12
PS
S
&_
PERMANENT SEEDING
3.32
TO TO TOPSOILING 3.30
Source: Adapted from Ludlow Products Brochure Plate 3.36-1
/P
CULVERT INLET PROTECTION
3.08
DC
DC
DUST CONTROL
3.39
TSD
TEMPORARY SLOPE DRAIN
3.15
SAI
SAFETY FENCE
3.01
RW
TEMPORARY RIGHT -OF- WAY
3.11
DIVERSION
TABLE 3.31-B
ACCEPTABLE TEMPORARY SEEDING PLANT MATERIALS
-QUICK REFERENCE FOR ALL REGIONS"
Rate
Plantim,, Dates Specie(Ibs.Jacre
Sept. 1 - Feb. 15 50150 Mix of
Annual Ryegrass
(Lolium multi-florum)
& 50 - 100
Cereal (Winter) Rye
(Secale cereale)
Feb. 16 - Apr. 30 Annual Ryegrass 60 - 100
(Lolium multi-ilorum)
May 1 - Aug 31 German Millet 50
(Setaria italica)
Source: Va DSWC
TABLE 3.31-A
LIMING REQUIREMENTS
FOR TEMPORARY SITES
Recommended Application
pH Test Gf Agricultural Limestone
below 41 3 tons per acre
4.2 to 5.2 2 tons per acre
52 to 6 1 ton per acre
Source: Va. DSWC
STAKE
FABRIC -- r-
71% I �,_," � I �10
ELEVATION OF STAKE AND
FABRIC ORIENTATION
SPECIFIC APPLICATION
DETAIL A
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.
Source: N.C. Erosion and Sediment Control
Planning and Design Manual, 1988
Plate 3.07-1
EROSION CONTROL NOTES
ES-1: UNLESS OTHERWISE INDICATED, ALL VEGETA TI VE AND STRUCTURAL EROSION
AND SEDIMENT CONTROL PRACTICES WILL BE CONSTRUCTED AND MAINTAINED
ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA
EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR
625- 02- 00 EROSION AND SEDIMENT CONTROL REGULATIONS.
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 ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL
INSPECTION.
ES-J.-ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR
TO OR AS THE FIRST STEP IN CLEARING.
ES-4: A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE
MAINTAINED ON THE SI TE A T ALL TIMES.
ES-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.
ES-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.
ES-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.
ES-8.-DURING DEWA TERING 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 EFFECTIVENESS 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.
ection. p
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.
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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
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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
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Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May
through August to consist of German Millet. Straw mulch is to be applied at 80lbs/100sf.
Alternatives are subject to approved by the 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% Perennial Ryegrass or Kentucky Bluegrass. Straw mulch is to be
applied at 80lbs/100sf. Alternatives are subject to approved by the County erosion control
'Inspector.
19. Maintenance: All measures are to be inspected weekly and after each rainfall. Any damage
or clogging to structural measures is to be repair immediately. Silt traps are to be cleaned
when 50% of the wet storage volume is filled with sediment. All seeded areas are to be
reseeded when necessary to achieve a good stand of grass. Silt fence and diversion 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)
STONE
CONSTRUCTION
A CCESS -\
S TONE
CONS TRUC TION
A CCESS -\
2%
70' MIN.
2%
\-6" MIN. #1 VDOT COURSE
AGGREGA TE BASE
PROFILE
70' MIN. -
2%
12%
RA VEL
WASHRACK
2%
12' MIN.*
*MUST EXTEND FULL WIDTH 0 POSITIVE DRAINAGE
� TO SEDIMEN T
OPERA TION
OF INGRESS AND EGRESS TRAPPING DEVICE
FIL TER CL 0 TH
SECTION AA
EXISTING
PA VEMEN T
-EXISTING
PA VEMEN J
AINAGE
flC_
A minimum water tap of I inch must be installed with a minimum I inch bollcock
shutoff valve supplying o wash hose with diameter or 1.5 inches for adequate
r r
constant pressure. Wash water must be carried away from the e r it ance t., an
approved settling area to remove sediment. All sediment shall be prevented from
entering storm drains, ditches or wotercourses_
I A I A nI 1 r%A I"I/
DESCRIPTION OF EROSION & SEDIMENT
CONTROL MEASURES:
EROSION AND SEDIMENT CONTROL MEASURES. -
IT IS ANTICIPATED TO USE CONSTRUCTION ENTRANCES, DIVERSION DIKES, EXISTING SEDIMENT BASINS,
AND SILT FENCES WILL BE INSTALLED TO CONTROL SURFACE DRAINAGE. TEMPORARY SEEDING WILL
BE USED IMMEDIATELY FOLLOWING ALL LAND DISTURBANCE ACTIVITIES TEMPORARY STOCKPILE
AREAS WILL BE MAINTAINED FROM TOPSOIL THAT WILL BE STRIPPED FROM AREAS TO BE GRADED
AND STORED FOR LATER SPREADING. STOCKPILE LOCATIONS SHALL BE ON SITE AND SHALL BE
STABILIZED WITH A TEMPORARY VEGETATIVE COVER. PERMANENT SEEDING WILL BE PERFORMED FOR
ALL AREAS WHICH WILL NO LONGER BE EXCAVATED AND WHERE CONSTRUCTION ACTIVITIES HAVE
CEASED. PERMANENT SEEDING SHALL ALSO BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE
LEFT DORMANT FOR A YEAR OR MORE. SELECTION OF SEED MIXTURE WILL DEPEND ON THE TIME OF
YEAR APPLIED.
TEMPORARY SEEDING WILL BE PERFORMED FOR ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT
FOR MORE THAN SEVEN DAYS. THESE AREAS SHALL BE SEEDED WITH FAST GERMINATING
VEGETATION IMMEDIATELY FOLLOWING GRADING OF THOSE AREAS. SELECTION OF SEED MIXTURE WILL
DEPEND ON THE TIME OF YEAR APPLIED.
CONSTRUCTION ENTRANCE.•
A STABILIZED PAVED CONSTRUCTION ENTRANCE WITH 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 THE PLANS TO REDUCE THE
AMOUNT SEDIMENT TRANSPORTED ONTO PUBLIC ROADWAYS.
SILT FENCE.•
A TEMPORARY SEDIMENT BARRIER CONSISTING 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 CONSTRUCTION OPERATIONS IN ORDER TO
PREVENT SEDIMENT FROM LEAVING THE SITE. TO DECREASE THE VELOCITY OF SHEET FLOWS AND
LOW -TO -MODERATE LEVEL CHANNEL FLOWS. THE 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 WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK (VESCH).
PERMANENT STABILIZATION:
THE ESTABLISHMENT OF PERENNIAL VEGETATIVE COVER ON DISTURBED AREAS BY PLANTING SEED.
TO REDUCE EROSION AND DECREASE SEDIMENT YIELD FROM DISTURBED AREAS. TO PERMANENTLY
STABILIZE DISTURBED AREAS IN A MANNER THAT IS 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.
TEMPORARY SEEDING.
THE ESTABLISHMENT OF A TEMPORARY VEGETATIVE COVER ON DISTURBED AREAS BY SEEDING WITH
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 PROTECTION TO BARE SOILS EXPOSED DURING CONSTRUCTION
UNTIL PERMANENT VEGETATION OR OTHER EROSION CONTROL MEASURES CAN BE ESTABLISHED.
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
THE 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 WITH THE VESCH.
TEMPORARY DIVERSION DIKE.•
A RIDGE OF COMPACTED SOIL CONSTRUCTED AT THE TOP OR BASE OF A SLOPING DISTURBED AREA
WHICH DIVERTS OFF -SITE RUNOFF AWAY FROM UNPROTECTED SLOPES AND TO A STABILIZED OUTLET,
OR TO DIVERT SEDIMENT -LADEN RUNOFF TO A SEDIMENT TRAPPING STRUCTURE. MAXIMUM
EFFECTIVE LIVE IS 18 MONTHS.
ROCK CHECK DAMS. -
SMALL, TEMPORARY STONE DAMS CONSTRUCTED ACROSS A DRAINAGE DITCH TO REDUCE THE
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 LIVE
STREAMS.
STORM DRAIN INLET PROTECTION. -
THE INSTALLATION OF VARIOUS KINDS OF SEDIMENT TRAPPING MEASURES AROUND DROP INLETS OR
CURB INLET STRUCTURES PRIOR TO PERMANENT STABILIZATION OF THE DISTURBED AREA; LIMITED TO
DRAINAGE AREAS NOT EXCEEDING ONE ACRE, AND NOT INTENDED TO CONTROL LARGE,
CONCENTRATED STORMWATER FLOWS.
TEMPORARY SEDIMENT TRAP.
A SMALL PONDING AREA, FORMED BY CONSTRUCTING AN EARTHEN EMBANKMENT WITH A STONE
OUTLET ACROSS A DRAINAGE SWALE, TO DETAIN SEDIMENT -LADEN RUNOFF FROM SMALL DISTURBED
AREAS FOR ENOUGH TIME TO ALLOW MOST TO THE SUSPENDED SOLIDS TO SETTLE OUT. MAXIMUM
EFFECTIVE LIFE IS 18 MONTHS.
TEMPORARY SEDIMENT BASIN.
A TEMPORARY BARRIER OR DAM WITH CONTROLLED STORMWATER RELEASE STRUCTURES WHICH IS
FORMED BY CONSTRUCTING AN EMBANKMENT OF COMPACTED SOIL ACROSS A DRAINAGEWAY. IT IS
USED TO DETAIN SEDIMENT -LADEN RUNOFF FROM DRAINAGE AREAS 3 ACRES OR GREATER FOR
ENOUGH TIME TO ALLOW MOST OF THE SUSPENDED SOLIDS TO SETTLE OUT. IT CAN BE
CONSTRUCTED ONLY WHERE THERE IS SUFFICIENT SPACE AND APPROPRIATE TOPOGRAPHY MAXIMUM
EFFECTIVE LIFE IS 18 MONTHS UNLESS DESIGNED AS A PERMANENT POND BY A QUALIFIED
PROFESSIONAL.
OUTLET PROTECTION. -
THE INSTALLATION OF RIPRAP CHANNEL SECTIONS AND/OR STILLING BASINS BELOW STORM DRAIN
OUTLETS TO REDUCE EROSION AND UNDER -CUTTING FROM SCOURING AT OUTLETS AND TO REDUCE
FLOW VELOCITIES BEFORE STORMWATER ENTERS RECEIVING CHANNELS BELOW THESE OUTLETS.
CULVERT INLET PROTECTION.
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 ALSO PROVIDES
EROSION CONTROL AT CULVERTS DURING THE PHASE OF A PROJECT WHERE ELEVATIONS AND
DRAINAGE PATTERNS ARE CHANGING, CAUSING ORIGINAL CONTROL MEASURES TO BE INEFFECTIVE.
SAFETY FENCE:
A PROTECTIVE BARRIER INSTALLED TO PROHIBIT UNDESIRABLE USE OF AN EROSION CONTROL
MEASURE.
STORMWATER RUN-OFF CONSIDERATIONS:
STORM WA TER MANAGEMENT. THE STORMWATER RUNOFF FROM THIS PROJECT DRAINS
TEMPORARILY TO THE PROPOSED SEDIMENT TRAP. THE SEDIMENT TRAP WILL BE
CONVERTED TO A PERMANENT STORMWATER MANAGEMENT FACILITY AFTER THE
CONSTRUCTION OF THE PROPOSED PARKING LOT EXPANSION.
SOIL DESCRIPTION:
23B - YADKIN CLAY LOAM - 29 TO 79 SLOPES. THESE DEEP, WELL DRAINED
SLOPES ARE FOUND ON SIDE OF HILL AND RIDGES. VERY LOW TO HIGH
RUNOFF, WITH MODERATE PERMEABILITY.
72D3 - RABUN CLAY - SEVERELY ERODED, 15Z TO 25Z SLOPES. THESE DEEP,
WELL DRAINED SOILS ARE FOUND ON GENTLY SLOPING TO STEEP RIDGES
AND MOUNTAIN SLOPES. MODERATE TO RAPID RUNOFF, WITH MODERATE
P9_PAA9_A PH l TY
ATTACH FILTER FABRI
TO STAKES OR POSTS
EXTEND iT INTO TREN.
EXCA VA TED
BACKFILLED
COMPACTED
)EN
E OR
L POST
5' MIN.)
QED
4"x4" TRENCH -
SILT FENCE
S(WITHOUT WIRE SUPPORT)
NO SCALE
FILTER FABRIC
ENTRENCHED 8"
COMPACTED SOIL 3' MINIMUM -
1 I
-1 11 11 1_1 1-I-
- - -
18"_ � - _ -,- - -I- - ----III - -11
6'
DD TEMPORARY 18" DIVERSION BERM
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 DETERMINI ) 13Y S0I1
TESTS AND APPLIED IN ACCORDANCE WITH VESCH STD. 3.32.
2. SEEDINGS TO BE MULCHED IMMEDIATELY UPON COMPLETION
OF SEED APPLICATION, IN ACCORDANCE W1 VESCH STD 3.35.
��VOPERMANENT SEEDING SCHEDULE SCAL-
(STD. & SPEC. 3.32 OF VIRGINIA EROSION &
SEDIMENT CONTROL HANDBOOK, 3RD ED.)
EROSION CONTROL NOTES & NARRATIVE
PURPOSE:
THE PURPOSE OF THIS LAND DISTURBING ACTIVITY IS TO EXPAND THE EXISTING
WAREHOUSE BUILDING FOR TRUMP WINERY. THE TOTAL AREA TO BE DISTURBED WITH
THE PROJECT AREA IS 1.37 ACRES. THIS INCLUDES ALL THE DISTURBED AREA ON THE
PROPERTY. THE TOTAL AREA FOR THE VSMP PLAN IS 2.15 ACRES. THIS INCLUDES
THE AREA BELOW THE SITE WITH THE EXISTING SILT FENCE AROUND THAT WAS
INSTALLED PRIOR TO THE START OF DESIGN AND CONSTRUCTION FOR THE WINERY
EXPANSION.
EXISTING SITE CONDITIONS
THIS SITE IS CURRENTLY A VINEYARD WAREHOUSE AND OPEN SPACE ON THE TRUMP
WINERY PROPERTY. THE PROJECT AREA IS SURROUNDED BY WOODS AND VINEYARDS.
ADJACENT AREAS:
THIS SITE IS SURROUNDED BY RURAL FARM LAND AND DENSE WOODS.
OFFSITE LAND DISTURBANCE:
NO CONSTRUCTION ACTIVITIES ARE PROPOSED OUTSIDE OF THE LIMITS OF DISTURBANCE.
CRITICAL AREAS:
THERE ARE NO CRITICAL SLOPES WITHIN THE PROJECT BOUNDARY. THE PROPERTY HAS
CRITICAL SLOPE AREAS, BUT THESE AREAS ARE WELL OUTSIDE OF THE LIMITS OF THIS
PROJECT AREA.
SOILS:
SOILS MAP IS INCORPORATED INTO THE EROSION CONTROL PLANS WITH SOILS DATA
INCLUDED WITH THIS NARRATIVE.
SEQUENCE OF CONSTRUCTION:
1. NOTIFY ALBEMARLE COUNTY TO SCHEDULE A PRE -CONSTRUCTION MEETING AS
REQUIRED.
2. NO EROSION CONTROL MEASURES MAY BE REMOVED DURING THE CONSTRUCTION
PROCESS WITHOUT THE APPROVAL FROM THE INSPECTOR ON THE PROJECT.
J. INSTALL THE PROPOSED GRAVEL CONSTRUCTION ENTRANCE WITH WASH AREA AS
SHOWN ON THE PLANS. CONSTRUCTION ENTRANCES TO BE INSTALLED WHERE
CONSTRUCTION VEHICLE ROUTES INTERSECT PAVED PUBLIC ROADS, PROVISIONS
SHALL BE MADE TO MINIMIZE THE TRANSPORT OF SEDIMENT BY (VEHICULAR)
TRACKING ONTO THE PAVED SURFACE. WHERE SEDIMENT IS TRANSPORTED ONTO A
PUBLIC ROAD SURFACE THE ROAD SHALL BE CLEANED THOROUGHLY A T THE END
OF EACH DAY. SEDIMENT SHALL BE REMOVED FROM THE ROADS BY SHOVELING OR
SWEEPING AND TRANSPORTING TO A SEDIMENT CONTROL DISPOSAL AREA. STREET
WASHING SHALL BE ALLOWED ONLY AFTER SEDIMENT IS REMOVED IN THIS MANNER.
4. INSTALL THE INITIAL PERIMETER MEASURES, INCLUDING THE SEDIMENT TRAP, SILT
FENCE, AND DIVERSION BERMS AS SHOWN ON THE PHASE I EROSION CONTROL
SHEET. THE EXISTING ENTRANCE WILL SERVE AS THE CONSTRUCTION ENTRANCE FOR
THE PROJECT UNTIL THE PERIMETER E&S MEASURES HAVE BEEN INSTALLED.
MEASURES INTENDED TO TRAP SEDIMENT SHALL BE CONSTRUCTED AS A FIRST
STEP WITH ANY LAND DISTURBANCE ACTIVITY AND SHALL BE MADE FUNCTIONAL
BEFORE UPSLOPE LAND DISTURBANCE TAKES PLACE.
5. STABILIZE THE SLOPES OF THE SEDIMENT TRAP AND DIVERSION BERM WITH
BLANKET MATTING TO PREVENT DOWNSTREAM EROSION FROM THESE E&S
MEASURES. STABILIZATION MEASURES SHALL BE APPLIED TO EARTHEN STRUCTURES
SUCH AS DAMS, DIKES, AND DIVERSIONS IMMEDIA TEL Y AFTER INSTALLATION.
6. ONCE ALL THE EROSION CONTROL ITEMS HAVE BEEN INSTALLED AS SHOWN ON THE
PHASE / EROSION CONTROL PLAN AND THE INSPECTOR HAS APPROVED THE
EROSION CONTROL MEASURES, THE CONTRACTOR CAN BEGIN GRADING THE SITE AS
SHOWN ON THE PHASE ll E&S PLAN. PERMANENT OR TEMPORARY SOIL
STABILIZATION SHALL BE APPLIED TO DENUDED AREAS WITHIN SEVEN DAYS AFTER
FINAL GRADE IS 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 (UNDISTURBED) FOR
LONGER THAN 30 DAYS. PERMANENT STABILIZATION SHALL BE APPLIED TO AREAS
THAT ARE TO BE LEFT DORMANT FOR MORE THAN ONE YEAR.
7. ONCE THE SITE IS ROUGH GRADED, THE CONTRACTOR SHALL BEGIN INSTALLATION OF
THE DRAINAGE PIPES AND GRAVEL PARKING LOT. INLET PROTECTION SHALL BE
INSPECTED AFTER EACH RAINFALL EVENT AND REPAIRS SHALL BE MADE AS NEEDED.
8. NO ITEM SHALL BE REMOVED UNLESS THE UPSTREAM AREAS ARE STABILIZED AND
THE INSPECTOR GIVES PERMISSION. THE PROPOSED SEDIMENT TRAP SHALL BE
CONVERTED TO SWM FACILITY AFTER THE CONSTRUCTION OF THE PARKING LOT HAS
BEEN COMPLETED. SEE SHEET 4 FOR ADDITIONAL SEDIMENT TRAP CONVERSION
DETAILS.
9. MAINTAIN ALL EROSION CONTROL MEASURES AS SPECIFIED IN THE VIRGINIA EROSION
AND SEDIMENT CONTROL HANDBOOK, REMOVING ONLY WHEN APPROVED BY THE
LOCAL PROGRAM ADMINISTRATOR IN ACCORDANCE WITH THE VIRGINIA EROSION AND
SEDIMENT CONTROL HANDBOOK.
10. ALL TEMPORARY EROSION AND SEDIMENT CONTROL MEASURES SHALL BE REMOVED
WITHIN 30 DAYS AFTER FINAL SITE STABILIZATION OR AFTER THE TEMPORARY
MEASURES ARE NO LONGER NEEDED, UNLESS OTHERWISE AUTHORIZED BY THE
LOCAL PROGRAM ADMINISTRATOR. TRAPPED SEDIMENT AND THE DISTURBED SOIL
AREAS RESULTING FROM THE DISPOSITION OF TEMPORARY MEASURES SHALL BE
PERMANENTLY STABILIZED TO PREVENT FURTHER EROSION AND SEDIMENTATION.
TEMPORARY SEEDING:
ALL DENUDED AREAS WHICH WILL BE LEFT DORMANT FOR EXTENDED PERIODS OF TIME SHALL
BE SEEDED WITH 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 ARES THAT WILL NOT BE BROUGHT TO FINAL GRADE WITHIN 30
DA YS.
PLANTS SHOULD BE SELECTED APPROPRIATE TO THE SEASON AND SITE CONDITIONS FROM
TABLES 3.31B AND 3.31C. NOTE THAT TABLE 3.31B PRESENTS PLANTS WHICH CAN BE USED
W/ THOU T EXTENSIVE EVALUATION OF SITE CONDITIONS; TABLE 3. 31 C PRESENTS MORE
IN-DEPTH INFORMATION ON THE PLANT MATERIALS.
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 3.31A MAY BE USED TO DETERMINE THE ACTUAL NEED ALONG
WITH SUGGESTED APPLICATION RATES:
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, CUL TIPACKER SEEDER
OR HYDROSEEDER. SMALL GRAINS SHALL BE PLANTED NO MORE THAN 1i INCHES DEEP.
SMALL SEEDS, SUCH AS KENTUCKY BLUEGRASS, SHOULD BE PLANTED NO MORE THAN 4
INCH DEEP. OTHER GRASSES AND LEGUMES SHOULD BE PLANTED FROM 4 INCH TO ' DEEP.
SEEDINGS MADE IN FALL FOR WINTER COVER AND DURING HOT AND DRY SUMMER MONTHS
SHALL BE MULCHED ACCORDING TO MULCHING, STD. & SPEC. 3.35, EXCEPT THAT
HYDROMULCHES (FIBER MULCH) WILL NOT BE CONSIDERED ADEQUATE. STRAW 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.
PERMANENT S TA BIL IZA T1 QN:
PERMANENT SEEDING WILL BE APPLIED TO ALL DISTURBED AREAS AS PER THE PERMANENT
STABILIZATION OF THIS EROSION & SEDIMENT CONTROL NARRATIVE.
AFTER CONSTRUCTION IS COMPLETED, ALL DISTURBED AREAS OF THE SITE WILL BE LIMED,
FERTILIZED, AND SEEDED AS PER CURRENT VDOT STANDARDS. THIS SHALL CONSIST OF
THE FOLLOWING:
TOP SOIL - 2" DEPTH
LIME - 2 TONS/ACRE
FERTILIZER - 600 LBS/ACRE OF 15-30-15
SEED - ERNST 5311 CONSERVATION SEED MIX - ERNMX-114 (45 LBS/ACRE PENNLAWN
CREEPING RED FESCUE, 37.5 LBS/ACRE ARGILS KENTUCKY BLUEGRASS, 37.5 LBS/ACRE
PARK KENTUCKY BLUEGRASS, 15 LBS/ACRE ANNUAL RYEGRASS & 15 LBS/ACRE PLEASURE
PERENNIAL AFTER THESE AREAS ARE STABILIZED THEY WILL BE MOWED AND MAINTAINED
ON A REGULAR BASIS.
MAINTENANCE:
IN GENERAL, ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CHECKED DAILY
AND AFTER EACH SIGNIFICANT RAINFALL. SPECIFIC ATTENTION WILL BE GIVEN TO THE
FOLLOWING ITEMS:
A. SEDIMENT BASINS AND/OR TRAPS WILL BE CLEANED AND MAINTAINED IN
ACCORDANCE WITH THE VIRGINIA EROSION & SEDIMENT CONTROL HANDBOOK.
B. ALL GRAVEL OUTLETS WILL BE CHECKED REGULARLY FOR SEDIMENT BUILDUP THAT
WILL PREVENT PROPER DRAINAGE. IF THE GRAVEL IS CLOGGED BY SEDIMENT THE
GRAVEL WILL BE REMOVED AND CLEANED, OR IT WILL BE REPLACED.
C. ALL SILT FENCE BARRIERS WILL BE CHECKED REGULARLY FOR UNDERMINING OR
DETERIORATION OF THE FABRIC AND REPAIRED AS REQUIRED. SEDIMENT SHALL BE
REMOVED WHEN THE LEVEL OF SEDIMENT DEPOSITION REACHED HALF WAY TO THE
TOP OF THE BARRIER.
D. ALL SEEDED AREAS WILL BE CHECKED REGULARLY TO SEE THAT A GOOD STAND IS
MAINTAINED. AREAS SHOULD BE FERTILIZED AND RESEEDED AS NEEDED.
1 °��
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�SC0TT R. LL1NS`-
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EXISTING CONDITIONS PLAN
/
/
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/
/
- OWNSPOU,T '
/ - - - - -
699.18
- � - - 699.33 I I
DOWNSPOUT
2- UNDERGROUND WATER
TANK HATCHES ° ° / 698.71
699.02
--- ------- -- _ --- FFE=699.59'�
--------- _-- 1
e 33� I
y- ELL HEAo D 2 STY. METAL STRUCTURE 69916 Y ° fi9B,27 BENCH MAk #1
WINERY °/ �P�98 ° ELEVATIONI697.4
2-UNDERGROUND WATER 498.3�
v TANK HATCHES �� ° 45
c
6. �
/ ° ° a a.72 VENT CAP � /
%CONC. APFOK ° °�� /
---------------- 6' STEEL BOLLARD----' ELEC. / ° g s99,3 �� 698.57
N� OUT 2-4"
PROPANE TANK MANHOLE UBOXION 6�94 F a j PVC, -698.43°
6" STEEL BOLLARD ® B ° °®NC FF 6 / ° ° a
q� a INV. OUT 2- PVC-698.04' /
x 699:29 a- /
lea �0 9967 / ° l
56N° DO�VNS�OUT se.
7017 / /
699.07
a
BOLLARD
INV. OUT 6" M=698.5' °
___ =699.15 °° 698.72
°° ° 69949
6 882
BENCH MARK #2 6sa�7
1u '
GRAVEL AREA a ELEV`�,698.96'° /
- 69851 � � ° ° 698.71/
o °
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� � EDGE GRAVEL
10' E /� INV .-695.5'
/ V-4 PZ=695.7''----
/ INV. 2-6" PVC=695.5'
r
PHASE I EROSION & SEDIMENT CONTROL PLAN / Sediment Trap Design#1
ESC Ph. II drainage area (acres) (<3) 1.54 YARD � j
�♦ trap volumes: �I""I
I I I /� �' ♦♦ , ♦. / / CREST OF STONE WEIR 9 RABLE�
I � ✓ � � � elevation (ft) area (sf) volume(cf) volume(cy) aR�oueo � Q
I //' / / / `♦ / ♦ 679.00 570.0 0 0.0 � �.
I �♦ ♦ 680.00 1075.0 809 30.0 - - SC OTT R. LLINS'Z
/ \ / ♦ ,' /' 681.00 1661.0 2,167 80.2 DRY STORAGE - N VARPB E' O
��'_ ♦♦♦ � Lic. No. 035791
/ 682.00 2316.0 4,146 153.6 A
' I / ` ♦♦ ' ' 683.00 3031.0 6,812 252.3
�� / ` v ♦♦♦ �� �� // // 684.00 3813.0 10,226 378.7 wETSTORAGE V. "�" FLTER CLOT.L0G,RAL 6 3 20
/ / / / I /' \ V A ♦ ,/ / i , (EXGVATED)
' �'- v v ♦ / / // / ELEV. SIONAL E�
r
/ l l l I i \ ♦ / / /
wet storage: -SEE PLATE 3.13-1 COARSE AGGREGATE— CUSS I RIPRAP
/ ,/ I / i l r l l r' v vv ♦ �� ,/ , ,
/ / `\ ♦♦ // // wet storage required (cy) (67*DA) 103.2
♦ -- --' / / bottom of stone weir (ft) 681.40 _
g /// /// wet storage provided at this elevation (cy) 109.4
♦♦ / / slope of wet storage sides 3:1
/r // / � ' ,/ ' ' // ♦♦ / , / weir length (ft) (60A) 20.0
♦♦ /' /' / dry storage: bottom of trap elevation (ft) 679
EXISTING GRAVEL
\ dry storage required (cy) (67"DA) 103.2 bottom trap dimensions: 1O'x66'
ACCESS ROAD '
vI � , �' �/ // j crest of stone weir 682.75 top of dam elevation (ft) 684
-- --_ -- -- --- ,' / dry storage provided at this elevation (cy) 118.3 top width of dam (ft) 10
slope of dry storage sides 3:1 top trap dimensions 41'x11 T
/// �- / v� ,---- - ----- ♦j♦ ♦I♦♦ / /' I i i i i // / / / / CD
/
/ // // i i l i i I♦ 1♦ / / i / /' // i i l i i i M U)
/ // / ♦♦ ♦♦ /� �'/ / / // i l i i i i z z
Lu
/ -_--
/ --- ♦♦ ♦� i i i i i / Z O Q H g
v ♦ / ♦ I
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` �I� �♦ v i i l � 2:�
\` \`\ I\ i i l i i i ` i ♦` EXISTING FARM WINERY \ H v z w
BUILDING `� v / i i i w U) w LU
cn
ESC_PHAS 1- �j� vv v����; I l (%� Q 2
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SE-DOMENT TRAP ��� \� `\ l o a
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/ / : //--_----- ♦ �� Ch / LULU
- �i - ♦ �1 i I / IJi w
oo
/
� I I
2- UNDERGROUND WATER ♦♦ DOWNSP
= TANK HATCHES ♦♦♦ °°°/ •♦ i it l i i i I i i i r
---- -- ♦♦♦ EFE=699.59'� ° %° ° - ♦♦♦♦� i I 11 it it
,> ELL HEAD ♦ /° °°° E l i
- 0 2 STY. MET TRUCTURE / °° BENCH MA�K #1 /
} 2-UNDERGROUND WATER RY °/� ° ELEVATIONS 697.44'/ ,' 0-)i I
/ -- ♦ / °° �� ° °° l I
--�---- - TANK HATCHES ♦ °�� ° CONSTRUCTION ENTRANCE- -- - ♦♦ ���� °
USE EXISTING GRAVEL ROAD � ♦♦ ���/ ° ��` a° "° °a
I I CE / ♦ °° I I
/ I AS THE CONSTRUCTION ID o/ I / I
I / I , , �/ ♦ ° I I I I
/ I ENTRANCE (MIN. 12 x 70) _ ♦♦ AREA = 0.2 AC ° 60k. APROK ° ? VENT cAP�
Q i i I i iIS
---- 6' STEEL BC%ARD�� ELEC. ♦♦♦ DISTURBBY-PASS AR ° / g �/ I / I +)
UNCTION ♦ OUT 2= 4 a l / l ' / I '
I I PROPANE TANK M OLE�a ° ' / PVC=698.43'e / / / I I C) o 0
6" STEEL BC�jARD-I BOX l / / I I I LU o N N
l 1 I LU N o 0
I I ♦ /°,° 4,�0 / a INV. OUT 2- PVC = 8.04' / / + - N N
I I ♦ ° Fy` N DOAN6?OUT / / I l I I I 0 W n M
/ I I / / / / II i i i i iI I I I I i --------- ♦0 \co,OCATION OF CONTRACTOR 6"STEE°yN ° e ♦♦•PARKING/STAGING AREA BOLLARD ♦ / 2/ // / / / / / l / l / /I+
INV. OUT 6" �1a.5' I I Ii l I I I I
N \ \1O
-L-OCAT10N OF I ° a ° ♦
♦° ° //♦♦♦ AtiSEDISII �TIFFI ''NCI E
PORTA-JOHNS------- SRO
/ C0R;'THIWD ♦//iLOCATION OF BENCH MARK2 ON,ISTRIUgTION AREA
RAIN GAUGE AVEL AREA
I
ELEV,,698.96'°- / ♦♦ / / / I I
LOCATION OF
DUM S---- - ---//// ♦♦I♦ // l l l II i I�
I I I I I I I I I I I I
" PVC �690.65/ EDGE GRAVEL � ♦� A' % V. 2- PVC 690.65 (')
-LOCATION OF / A INV.=695.5' - --- ♦♦I / � C'7
FUELING TANK --_ ♦ 6 / /
--
/ / i i I -- ♦ / ( �\ // ♦INN /A INV. ' PVC-0q
V. Y, PVC=06.
EXISTINGTREE /15' AP / L�.I IIIVV II\LL ___ / I / ..� / -- ' / ' ' It
CONSTRUCTION ENTRANCE s / _ i
TO BE REMOVED INV. 6" HP E =687. / \ ILL♦ 6" HP9E -687. 1 \ (�
� BE REMOVED � I % - / / ��i � � I � �
TEMPORARY FLASH RUNOFF & / / /♦ /
FOR CONCRETE SHOUT // /♦♦ / Q
PROPOSED i /// ♦ / N
LU 0
DIVERSION BERM DD / ♦ / ' PROPOSED DRAINAGE N
/
/ i i i I i _ 6�- / ♦� / DIVIDE, /TYP.
LIMITS OF _ ------ / // / �/ / i i i i /// ♦♦♦ / x / Q
_
DISTURBANCE WITH > � //' // / ,� ,/ /� / / i i I � I i i i ��// / ♦♦ , / �
PROJECT AREA=1. AC / // / / / // / I / / ♦ / /
37 / / l I I I I �� DC / LU
/ / / / I • ____ _ k / J
♦ /
�/ // /' / // / /' / i I i i - ♦ / / _
LIMITS OF ------- . __------ __-_// �! , , / / ,' J
DISTURBANCE FOR A
// '-__ PROJECT AREA =1.37 AC FLOW DIRECTION ♦♦ pp / k / / / ; U)
// i / // // ( --- ARROW (TYP.) _----- ♦ / // W
♦ PROPOSED / /
� ----- / � � �'' i � / i / � � � li II II , � ♦ DIVERSION BERM
// // i l i190 - - - - // ♦1 SAFETY FENCE TO / i
/ // ' � i i / ♦ ENCOMPASS
SEDIMENT TRAP
/ / // / I ♦ / / ♦ PROPOSED ESQ' LIMITS OF DISTk1RBaNCE, T*P.
I ♦ / ST ♦ THE BOUNDARY FOR THE LIMITS OF I O
!�,♦j /// // ♦♦ OP2 41 / ISTURBANC,E,WHICH TOTA Sz. ; AC i
---- / / I ----------- _ . W W W W .. �♦ /� ♦ DEPTH=2 DEFIN�S TH E BOUNDARY F0/R TH3 VR M ' I
PS
♦♦ RIPRAP WEIR WATER QUALITYALC�JLATION / w
// / V / i l / // �' ♦ ELEV.=682.75 i l l
/ / �// / / W �,/ , } /
TOTAL LIMITS OF VSMP �/ / �� / � , � / � / , / TOTA��LIMITS OF VS � / � � / / ;�W=2oI �
/ / PLAN=2-. 5-4C------------ /
PLAN=2. �L ----- ------ - / / / i i i l i l -� �" W " I ' EXISTING SILT FENCE AROUND PEOIMF/ OF
/ / ��
/ \ / / AREA FOR EXPANSION OF THE WINERY.
/ / L_ /l 7 /
/ / / ����/ i i -� /. ® EXJ'STING/SILT FENCE TO RE�MAIIN. Ul U)
/ l lh ° V - `w w ' ADDITIONAL EROSION CONTROL MEASURE5/ '7
�o
-�/ / -� ,� i i i �l l �� i i i l �� +�+ w ` W ♦♦ _ C1P1 L=1O' W=4 k SHALL RE IMPLEMENTED O C NTbINHE / L1J
/ / w w♦ R DEPTH=2 P z
------- / /' // i i l -I'� ° W ♦ ��� ° / DISTURBANCE FOR THE E PANSION WITHIN /
/ \ / PROPOSED i °. . �' ,
/ / z / ' / BM - - ��' z / THE FOOTPRINT AS SHO N ON T/H PLAN. �
BLANKET MATTING -I�+ ��;�
------ / - \ \ 6 / - -� ��. �� �.�V 6 /
J
w �� .� �1111111111111111111� � - w
/ �/ PROPOSED SILT FENCE FOR THIS SF �- - - -�- / /
� - � k- EXISTING DIRT STOC�CPIILE ARE TORE USED /
// �\ ' ' / ; / ; FOR THE BUILDING /PAD AND PARKING LOT
� / � � CONSTRUCTION AREA -� +� �� � � � � �
CONSTRUCTION.
� '
/ �� IIIIIII� III -III- x
1/ Im k_, CONTRACT OR15HAl L LOCATE & SIJRROl1ND THE (D
1 I 1- - I- _--- PROPOSED CgNSERVATION AREAIWITH�ORANGE -
/ - \ 11111111111111111111111 T o
\ SQEETY FENCE PRIOR TO STARTING
O
ADDITIONAL o ACRES TSIDE F THE,---
7g OU OC NSTRUCTION. SAFETY FENCE N THIS OCATION
/ / m
_
/IS INTENDED TO PREVENT DISTURBANCE WITHIN
PROJ ECT LIMITS BUT PART OF THE OVERALL
WATER PIPE W/ ELEC\ (APPROX.) \� i i EROSION CONTROL PLAN. AREATd REMAIN THE CONSERVATION AREA.
�� � WATER PIPE W/ ELEC\ (APPROX.)
// - V A �� /� UNDISTURBED, EXCEPT FOR TJ,IE`INSTALLED
// V �� SILT FENCE. TIC DISTURBANCE FOR THE SILT----__
ILT
ALL FENCE HAS INCLUDED IN THE OVERALL
-PR-OJECT LIMITS OF D�TURBANCEAREA
/ I
/---- /
,�- _ - A \ ____'
•N ��69 \ \ ---- ,',GRA,gHIC ;SCALE - _ �� �� \ \ ,GRAgHIC ; SCALE
�4 P i5 30 60 /
�9- P i5 / 30 , / 60
/ I
0
P\U,MP HOUSE \\ i J ` X P\UIVP HOUSE \\ +i� ,
_ - WELL HEAD- `v / �.K X x X WELL HEAD,
/
TN FEET ) / i - - - - - x� \ / ( IN FEET ) /
.1 inch = 3Q' ft. / / - - - -\ X�x-X o i4 inch = 3C}' ft. /
I..V
L L]
111
Q
z =
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0
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V
z
z w
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111 0
Lr) Lu
z Ln
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a �
JOB NO.
192178
111 ALE
301
SHEET NO.
3
i SEDIMENT TRAP CONVERSION PLAN
STRAP TO EJ(TEN❑
PHASE II EROSION & SEDIMENT CONTROL PLAN i. THE SEDIMENT TRAP SHALL NOT BE CONVERTED WITHOUT PRIOR PAST CORNERQF LIFTSTRAP FOR FINAL GRADING & DRAINAGE PLAN
APPROVAL FROM THE ESC INSPECTOR. BAG INTO 6-LOOP REINFORCEMENT ,/ ,� ' - - ; rT�H
2. THE PROPOSED RISER AND BARREL SYSTEM, WHICH ARE TO BE (TYP. PERa) TOP VIEW 1 O��
i CONSTRUCTED WITH THE SEDIMENT TRAP AT THE BEGINNING OF THE
♦♦ �� , PROJECT TO MINIMIZE FUTURE DISTURBANCES, SHALL REMAIN
♦�� �� WATERTIGHT DURING THE CONSTRUCTION PHASES.
3. THE RIPRAP LINED SPILLWAY, WHICH SHALL BE CONSTRUCTED WITH THE z EEwN IN NEGx �- 1 / / ,/ i I SCOTT R. LLINS`Z
SEDIMENT TRAP AT THE BEGINNING OF THE PROJECT SHALL REMAIN. THE '
♦ / ♦♦
V♦ �� SPILLWAY SHALL BE CHECKED FOR SEDIMENT DEPOSITS, EROSION & - _ �' / / ) , U Lic. No. 035791 ,�
�� ♦ �� ' SETTLEMENT AND CORRECTIVE MEASURES SHALL BE IMPLEMENTED AS
NEEDED. ❑IRTBAG 6/3/20
�v ♦ �v , / / / �/ i / �' �O
v 4"
4. 4. ONCE SEDIMENT TRAP #i IS READY TO BE CONVERTED, THE TRAP SHALL BE v74IP,111
SPROPERLY DEWATERED. SEDIMENT TRAP #i SHALL BE DEWATERED WITH A ``' ' / / / IONAL V,
PUMP (WITH A FILTER ON THE SUCTION END) AND A SEDIMENT FILTER BAG. SEE THE PROPOSED'ACF DIRTBAG HD'SEDIMENT FILTER DETAIL ON THIS°PENING ` ` SHEET OR EQUIVALENT FOR THE SEDIMENT TRAP DEWATERING DEVICE. TO4°DI°CHARGe \ _- - DEWATERING OF THE TRAP SHALL OCCUR NO SOONER THAN 8 HOURS LENGTH HOSE ` ---' '//SAFTER THE LAST RAINFALL EVENT TO ENSURE PROPERTY SETTLING TIME INTHE TRAP.
♦ 6. MUD/SEDIMENT FROM THE BOTTOM OF THE SEDIMENT TRAP SHALL NOT BE NOTES:
♦ 1) DIRTBAG TO BE PLACED ON AGGREGATE OR STRAW
EXISTING GRAVEL ♦♦ PUMPED, BUT SHALL BE REMOVED. ONCE THE WATER AND SEDIMENT HAVE 2) SEAMS MUST BE HIGH STRENGTH DO JBLE STITCHED "J" SEAMS
\ BEEN REMOVED, THE CONTRACTOR SHALL REGRADE THE SEDIMENT TRAP, 3) SEAM MUST BE TESTED CINDER ASTM D-4884. ACF TEST RESULTS AVAILABLE UPON REQUEST \ \ , / / ✓ / / / / , / /
ACCESS ROAD
\ AS REQUIRED, TO ACHIEVE THE PROPOSED DESIGN SHOWN ON SHEET 6.
_ - CONTRACTOR SHALL USE STRUCTURAL FILL WHEN MODIFYING THE TRAP
Ma
Iwo
AND FINE GRADING THE FACILITY DURING ITS CONVERSION. CROSS SECTIONLa
' 7. WHILE THE TRAP IS BEING FINE GRADED TO THE PROPOSED SWM FACILITY'S
\\ PERMANENT GRADING PLAN, THE CONTRACTOR SHALL BEGIN
`v �� ♦� CONSTRUCTING THE LEVEL SPREADER. THE CONTRACTOR SHALL TAKE - - -
\ ,- ♦. ♦. EXTRA PRECAUTIONS TO ENSURE THE PROPOSED CONSERVATION AREA IS
\\ _-- ---- ♦ ♦ NOT DISTURBED. A GRLGATLORSTRAWUNDERLAYMENT \ \ \ \\ I -- - - - - - p
♦♦ •♦ ,' 8. ONCE THE SWM FACILITY IS AT FINAL GRADE AND THE LEVEL SPREADER
\\ ` ♦♦ •♦: HAS BEEN CONSTRUCTED, THE CONTRACTOR SHALL STABILIZE THE
v y-/ ♦ ♦ FACILITY's GRASS GROUNDCOVER. AT THIS TIME THE RISER AND BARREL DB55 FABRIC PROPERTIES
\ ♦ ♦
\ ,- ♦ � SYSTEM CAN BE MADE OPERATIONAL AND WILL NO LONGER BE REQUIRED PROPERTY TEST hhETHO❑ h'f,4Rv
\ ♦♦ TO BE WATERTIGHT. TENSILE STRENGTH ASTM D-4632 205 LES \ 1 I
v to �� ELQNGATI4N ASTM D-4632 5G�o v I / ! / / Q d
-I CBR PUNCTURE ASTM D-6241 525 LES \ 1 �- i / I Q
V / ♦♦♦♦♦♦��/ ���� UV RESISTANCE ASTM D-4355 il)% LO EL
ADS ASTM D-4-751 8D US SIEVE O
EXISTING FARM WIN RY ` / m
\ 1 FERMI TIVITY ASTM D-4491 1.45EC-1 \ � DITCH SUBAREA % � \ I � � Z w
v ESC PHASE II ��� �I v v /� i v / H w� w ut
\ _ BUILDING FLOW RATE ASTM D-4491 96GPfw1lSF \ \ I 1.09 aC. g
\ SE��MEAI TRAP I�i' \ `\ A Tc=12 min. - ♦/' \ \ � \ I � � � owC
CORPORATE OFFICE: \ \
/ / • aai cAroweu aono AGF DB55 80Z DIRTBAG \ / / \ \ \ \ Z Q 0
\ p OWNSPOU - i ) \ Cw=0.b2 OWNSPOUT
9 / ]SITYN'X'iiilAf'EorBRIL(ril waanon IUFnonwmrwcFaanrzon MFxramRarw�xru \ \ \ // \\ / \ `\ (n Z w Z
\�-' '� DA- 1.54aC. •. RieHuoNo.vnzaz�a \\ \ �\ 1 \ �� \ \ \ \ l I / O I- U H
\ I vv�I I� w a U
airtbag� seam Test Results (under ASTM 134984) � 111R1BhA- V i /
- - / W Ce
\ DOWNSPOUT IY
\ 2- UNDERGROUND WATER
i \\ TANK HATCHES
_V ,
yr ui--i wiv iv,�uM i �nmw u i i i iu __�------' -- -- FFL=699.59 / _n-- -� , ----'' \\ -- , FFE=699.59
�. Custom Sizcs availabic u an rc ucst. - -
CONTRACTOR. ALL CONSTRUCTION ♦♦ % /
� I*MODIFIED RATIONAL METHOD
I
I
I
� _
TRAFFIC IN THIS AREA SHALL UTILIZE ELL HEAD / / I v �- ELL HEAD / / BENCH MAK
2 STY. MET �TRUCTURE BENCH MA �K #1 / TIME of CONCENTRATION PATH 1 A- 0 2 STY. METAtSTRUCTURE # I
/° 2 1 / O I a° / 4- , O
THIS CONSTRUCTION ENTRANCE. }}RY a/ ° �P ELEVATION 697.44'/ / I 100' OF oLF w/ D ELEV=7' (11 min.) \ a Q ° ELEVATION / I
2-UNDERGROUND WATER 350' OF CONC. FLOW w/ D ELEV=24' 1 min. W�OERY / °
' �° \ � l � � I I I ( ) v� 2-UNDERGROUND WATER � \ � l � � I I I I I I I
TANK HATCHES ♦♦ / ° �� ° \ / / / I * � ✓ °° �� a ° < I
(*PER THE VESCH, CHPT. 5, ---- TANK HATCHES
CONSTRUCTION ENTRANCE - --� --- __----- ♦ / a / / / I `\------- / a �� 5'x10'x6" ELEC. /
USE EXISTING GRAVEL ROAD ♦♦ a ° I I / I I / / I
♦ a \ / PLATES 5-1 & 5-2) �/° /
�l a�Q d / I tiP SERVICE SLAB
AS THE CONSTRUCTION CE �/ ♦♦ DRAIN, ��°� ° a �= I I I I l I i i I i i 1/ `� I aoo�/J 4 a °� ° ° SERVICE SLAB MECHANICAL I
ENTRANCE MIN. 12' x o' ♦ AREA = 0.2 AC °/ a VENT CAPS I / / I �� ` // ° a VENT CAP®
( 7 ) - ' ♦ - /GONG. APRON ° �� / I \ CONC. APRON a
-------- ♦------ ♦ BY-PASS �] �� I / / - ------ a° / /
--- \
6„ STEEL B RD ELEC.. ♦ �p / �� + ' I ' i i i i I - - 6° STEEL BOIL4RD�� EL a /a s / I ' ♦ DISTURB AR 1 / / /
UNCTION ♦v` OUT 2s 4 a PS / I UNCT+ON I/: OUT 2� 4 a �s ' I I o
PROPANE TANK M OLE�o I PROPANE TANK MA&HOLE�o g / I
/PVC=698.43'° / I /PVC 698.43° / I o 0
�� BOX F a h / / I �� BOA
I N N N
6" STEEL BVRD ® $ ac®Nc /° a I i 6° STEEL BOARD - w o 0 0
a,,a ° INV. OUT 2- " PVC = 8. / I - aaa INV. OUT 2- " PVC -698.0
♦ Rp -` 1pa R°
♦ T�� ° N DOJVNSYOUT / / / I I , Th N DOaNNS�OUT W n M
♦ a cy °- as a a < Fcy ° a° Q I
LOCATION OF CONTRACTOR / 6 STEEL CAN a °RgiN of /° 16 STEEL C °Rq /a
c a / l /
PARKING/STAGING AREA BOLLARD a 8 I / BOLLARD y I
Nql! NV: OUT 6"G98.5' a° a / 2 l / X I '-- , / I NV. OUT 6=698.5 a° / / I I
LOCATION OF o / / g.. 4 A z
♦♦ ° °Gc / / / / I �'ROPOSED SILT FENCE---------------� / I / //
PORTA-JOHNS --- a a ♦ / / a ° AG /
W� ♦� // °�itiAp SF' CONSTRUCTION AREA , i ° p / J
LOCATION OF BENCH MARK2 / FS / / I BENCH MARK #2 FS / I
L9
RAIN GAUGE AVEL AREA a ELEV`698.96' / / / /
z / i GRAVEL A a a ELEV`698.96'" / / / I I I I i i I i a_
LOCATION OF // / / �� i i i I� I
� � PROPOSED BLDG,/ �
_/ �> FFE= 699.00 I i i i � W
I I I I I 1 _ _� / / I
---� -- / I , -- -� _- /
DUMPSTER a / I I I I � I � � � / I I i I I I i i 1 1 1 �
EDGE GRAVEL / R 2- PVC 690.6.`,� / / t EDGE GRAVEL / A 1 2- PVC 690.65/ co
LOCATION OF - #
FUELING TANK / INV. 695.5' --- PROPOSED WINERY c �9q l i i i / INV=695.5' --- 6, oPq / l l i i i (�
/ ♦ tt v-4=P� s95.7'-- EXPANSION BUILDING °F / x i i i i I i / I INV-4=P-V� s95.7'- / / � z
♦ INV. 2-6" PVC-695.5' / . /N `� / I I/ -i INV. 2-6" PVC=695.5' ! qi F / / l I N
♦ �P / /pF A INV. ' PVC-U8 - i --- I , ------ N /AF INV. ' PVC=06.2'
/.��/ I I / / I LL
PROPOSED SEDIMENT TRAPPING TS ! ♦ `� _- I I i i i i I ' � / \\ r� / J % I I I i � i i �
DEVICE TO BE USED FOR THE / ♦ �� i i I i / i // - i �� c' // i i i I i c
1 i i I i INV. 6" HP �E =687. ' �� i I Q 0
CONSTRUCTION ENTRANCE s �' n�
----
TEMPORARY FLASH RUNOFF & \ I��` 6' HP9E =687 I 9
o?S
FOR CONCRETE WASH OUT /� �� /♦ / I 695.0���/ /
// I
PROPOSED _�
DID / ♦ / � � I�� � � I / I I I N �
DIVERSION BERM �I---- ------- / / PROPOSED DRAINAGE
-��- / ♦� DIVIDE TYP. 1 i 695.0 N
/ i 12" 21A COMPACTED % Q
r�. \ (%�
'r- / ♦♦ ! I �b I i i i 1 i GRAVEL PARKING LOT
� C / / ♦ , L � 1�
FLOW ARROW 1 / � I � I I i -_
♦♦ k i� NEW (3) PVC J V
- - _ DRAIN PIPES
I
LIMITS OF -------- :=-...LL.. - � ♦♦e i I i i i i---------i - LL.LL .LL.LL.. / // // i I i i J
DISTURBANCE FOR ♦♦♦ i I i 1 V �� / / /' I ® i z
I
PROJECT AREA =1.37 AC = ♦♦ �D I i I -_----__ I PROPOSED 10' GRASS I i i i I U) z
♦ k
I � --_-_ - --- - - ACCESS ROAD � // / i � II I I � W
- + / \ ........ ♦ DIVERSION OOBERM I I \ / I � Q
-----------� 1 L _
H
I■ .
L9
PROPOSED GRAVEL'. Q W
PARKING LOT' SAFETY FENCE TO 9� --_ i i i i l i i I J
_ z U,
�.♦1 ENCOMPASSi/ ; / i //
Q
-
-------- SEDIMENT TRAP PROPOSED ESC LIMITS OF DISTURBANCE TYP. � __
k PROPOSED DRAINAGE
--� ' DITCH WITHATALL l Z
♦ THE BOUNDARY FOR THE LIMITS OF FESCUE LINING , �/ i /
' -4 37 - - -- - ,�
♦ / ♦-'- OP2 DISTURBANCE WHICH TOTALS 1. AC �
/ L-8 W- ) W U..� W
♦♦ �� so / �� DEPTH=2' DEFINES THE BOUNDARY FOR THE VRRM (SLOPE-4.9%�- ,�� i'� ��� i i l i i
PS /� �► WATER QUALITY CALCULATIONS. / Q 2.57 CFS > ♦ i' _ , i l i /
yi w - n ♦ RIPRAP WEIR - 3. O
i- / ♦ ELEV.=682. z ♦ W
TOTAL LIMITS OF VSMP ' '75 / _ V z 3.99 FPS GRASS
�W=20/
PLAN=r.15 AC-- ------ \� W . W/ �. W . j ; Q �= 3.38 CFS NO DITCH ♦ /Uj
- - - - / EXISTING SILT FENCE AROUND PERIMETER OF / D = 0.51 FT Z
+ W w I SF o , PROPOSED GRASS DRY RETENTION BASIN (%�
} AREA FOR EXPANSION OF THE WINERY. / ; ♦ , j' ', �� WITH OUTFACE SEE SWM SHEETS & 6 FOR z O
/ 5
b EXISTING SILT FENCE TO REMAIN. NOTE: �' ��_-,�' DETAILS H�
� ADDITIONAL EROSION CONTROL MEASURES �h� / PER THE VESCH, CHPT 5, TABLE � a, W
V
+� 1♦♦ - 1`t OP1 DEP =2' - FESCUE GRASS HAS _ W
' k SHALL BE IMPLEMENTED TO CONTAIN THE i 5 14, TALL
-�� _ ♦ �r� DEPTH=2' ,
a w
PROPOSED -ice+ W W W ♦ .. . ` .. EXPANSION WITHIN
A MAXIMUM PERMISSIBLE
DISTURBANCE FOR THE ..' �
♦ ' ..... ' '��. ''. z VELOCITY -OF 5- ft s FOR .... .. Z
BM I+ 1R W W W THE FOOTPRINT AS SHOWN ON THIS PLAN. � BLANKET MATTING ���� Ww� ` �W WWW':W.w. ��Ii� CHANNELS WITH SLOPES < 5%. /' (n
�.
'e'LL`�y+
� LL... W
Lu
PROPOSED SILT FENCE FOR THIS SF �� � ' - EXISTING DIRT STOCKPIILE AREA TO BE USED i/ PROPOSED SWM OUTFACE DESIGN WITH W
CONSTRUCTION AREA �� +�FOR THE BUILDING PAD AND PARKING LOT
LEVEL SPREADER. SEE SWM SHEETS (f)
+� �/ / m PROPOSED 3:1 SLOPE DETAILS Q
CONSTRUCTION. � / /� 5 & 6 FOR
CONTRACTOR SHALL LOCATE & SURROUND THE , / /// m WITH PERMANENT -, (D
x \06
- PROPOSED CONSERVATION AREA WITH ORANGE GRASS COVERING ---
z
I I I I �- / SAFETY FENCE PRIOR TO STARTING /// \ p
�Tg_�
k_IIIIII II- h CONSTRUCTION. SAFETY FENCE IN THIS LOCATIONADDITIONAL 0.78 ACRES OUTSIDE OF THE- I I _- - \\X�_X �� IS INTENDED TO PREVENT DISTURBANCES WITHIN----- // /\\
PROJECT LIMITS BUT PART OF THE OVERALL
EROSION CONTROL PLAN. AREA TO REMAIN \ THE CONSERVATION AREA. ------ ��SA�Tl
\WATER PIPE W1 ELEC (APPROX.) \ / / PIPE W/ ELEC (APPROX.) -J O
UNDISTURBED, EXCEPT FOR THE INSTALLED -`A V A i
{ SILT FENCE. THE DISTURBANCE FOR THE SILT \ / \ \
FENCE HAS-BEEN INCLUDED IN THE OVERALL \V A ��� �� _�// /// ��V A ,'i v W
----- / // A� / j w
PROJECT LIMITS OF DISTURBANCE AREA \ �� \� �� \ -LU
LS FOR DETAILS AND DESIGN
LEVEL SPREADER SEE EETS 5 & 6 * ,,// �/// v A� \� a vzi
'GRAP'HIC SCALE Dltch Subarea Ground Cover -- �� \� __ -GRAPHIC' SCAIE / JOB No.
Area, ac. Cw 192178
as
-- _-
' 30 0/ i5 I 30 / 60 � i \ � �- -_ - 30 0 �' i5 6 / 60 I l I
---------- ---- Impervious Areas 0.11 0.9 - / SCALE
.� Gravel Areas 0.56 0.8
�PU.MP HOUSE +i �PUIVP HOUSE 1"= p'
x
WELL HEAD, \ ` Pervious Grass 0.42 0.3 WELL HEAD, \ ` / ; 3
---- - - - - _ X x � `v ,� FEET ) / Total 1 09 0 62 v HE N
---------- - - - _ _ _ S
( -( IN FEET ) /
ET O.
x _7_- x x� i finch - 30 ft. i O al ` -_ 1 inch = 30 ft. /
` - - - _----- / /% * Values per the VESCH, Chpt. 5, Table 5-2 ` _----- / /% 4
PRE -DEVELOPMENT SWM PLAN: / / / WATERSHED SUMMARY
SCALE 1 = 30 ♦ •� / / Area, 1-year Flow, 2-year Flow, 10-year Flow,
CN
.♦. / ac. cfs cfs cfs
/
♦ / �� A / FDA A (Pre-Dev.) 68 1.54 1.12 1.87 4.54
♦ \ Pre -Development Impervious Area Summary
♦♦/ \ \ Subarea A
♦ / / \ Existing Building & Overhangs 2,575 sf
♦ / / / V / / / Existing Gravel 12,000 sf
Existing Concrete 2,300 sf
♦ /� / / I / / 16,875 sf
♦ / / / j / Subarea B (Not Modified)
Existing Building & Overhangs 3,775 sf
Existing Concrete 4,225 sf
\ / Existing Gravel 300 sf
8,300 sf
■ I / / Water Quality Impervious Areas
® / r
■ \� / I (Defined by the Proposed Limits of Disturbance)
■ : \�. / I Existing Gravel 1,925 sf
II �� r
\* / / v �� I /
I ♦ i I I I I I( � / /
I / •. \ \ \ 100OF OLF w/ A EL =10' /
45' OF CONC. FLOW / A ELE�=5'
170' OF CHANNEL F OW
4##
\\ V ■ \ / v v �41* 4,#
■ \ ♦ \ \ **4t*
■ _ ♦SUBAREA B d°
/ \ ♦(NOT MODIFIED
\ ■ \ ♦ 0.23 ac, a /
® ♦ Tc=0.12 rs. d/ I I I l
■ ° °d
° I I
I I
I
1 -� V ♦ ° �° d ° � � � � l l I I I I I I I
° °
\ _ I
AREA (0.20 ac.) I
\ % d REDIRECTED TO
SUBAREA A IN / I I
° . POST-DEVSTATE
_ l ° ♦ � � I I I
• �° / EXISTING CONCENTRATED /
° • / OUTFALLS DRAINING SUBAREA B TO
/ ♦ REMAIN. NO ADDITIONAL RUNOFF
IS PROPOSED TO BE ADDED TO
/ I / THIS STORM SEWER NETWORK.
\ \ EXISTING STORM SEWER
\ & CONCENTRATED /
♦ /
OUTFACES TO REMAIN -
V A� 100' OF OLF w" ELEV=7
\ \ 375' 0�01�. FLOW w A
ELE ■ � I
■ /
\ PRE-DEV. ■
� / • \ /�\ SUBAREA A ■ / THE BMP TREATMENT AREA (TOTALING
1.54 ac, / ■ / 0.86 ac.) IS THE PORTION OF SUBAREA A
\ - \ - - - - - - - / / • \®\ __ WITHIN THE LIMITS
Ch rs. / / OF DISTURBANCE.LOCATEDTHAT IS
Tc0.16
THIS AREA IS BROKEN
• \®� -
/ ■ DOWN INTO IMPERVIOUS AREAS (0.55
\ i\/ ■ ac. OR 64%) AND MANAGED TURF AREAS
- - v - _ • A �\ ■ (0.31 ac. OR 36%).
- - - / • / \ /\- - -- - - . --PROPOSED ESC LIMITS OF
DISTURBANCE, TYPICAL. THE
_ , BOUNDARY FOR THE LIMITS OF
\1Z,\\ DISTURBANCE, WHICH TOTALS 1.37ac.,
6- / . DEFINES THE BOUNDARY FOR THE
VRRM WATER QUALITY CALCULATIONS.
/ ■ LOCATION OF
■ ♦ PROPOSED SWM
FACILITY
401
STORMWATER MANAGEMENT NARRATIVE: ■ .•
OVERVIEW: . \
THE PROPOSED STORMWATER MANAGEMENT PLAN COMPLIES WITH PART IIB SWM REQUIREMENTS. MINIMUM ■ . -
CHANNEL & FLOOD PROTECTION AND VIRGINIA RUNOFF REDUCTION METHOD (VRRM) REQUIREMENTS ARE ■
MET. PLEASE SEE THIS SHEET FOR SUMMARIES, AND THE ATTACHED STORMWATER MANAGEMENT S \ ..•
CALCULATIONS PACKET FOR ADDITIONAL DETAILS, PERTAINING TO THIS PLAN's WATER QUALITY AND
QUANTITY COMPLIANCE. -
WATER QUANTITY SUMMARY
THE PROPOSED PLAN MEETS MINIMUM COUNTY AND VA DEQ REQUIREMENTS. THE PRE -DEVELOPMENT STATE
CONSISTS OF AN EXISTING DEVELOPMENT. THIS DEVELOPMENT HAS TWO PRIMARY CONCENTRATED /
OUTFALL POINTS.
THE FIRST CONCENTRATED OUTFALL POINT IS LOCATED TO THE EAST AND ITS DRAINAGE SYSTEM WILL
REMAIN IN THE POST -DEVELOPMENT STATE. THIS STORM SEWER NETWORK WILL NOT RECEIVE ADDITIONAL
RUNOFF AND ITS CONTRIBUTING DRAINAGE AREA (SUBAREA B) WILL NOT BE MODIFIED WITH THIS PLAN.
THEREFORE AN ANALYSIS OF THIS CONCENTRATED OUTFALL POINT IS NOT REQUIRED.
THE SECOND CONCENTRATED OUTFALL POINT IS LOCATED TO THE SOUTHEAST, AS DEPICTED IN SUBAREA
'A' IN THE PRE- AND POST -DEVELOPMENT STATES. SUBAREA 'A' ENCOMPASSES THE PROPOSED
IMPROVEMENTS AND A CHANNEL & FLOOD PROTECTION ANALYSIS HAS BEEN PROVIDED FOR THIS AREA. TO
OFFSET THE IMPACTS FROM THE PROPOSED IMPROVEMENTS, A DRY DETENTION CELL IS PROPOSED TO
TREAT SUBAREA 'A'. THIS FACILITY IS SPECIFIED AS 'SWM FACILITY A' ON THIS PLAN AND PROVIDES
STORMWATER QUANTITY (NOT QUALITY) TREATMENT.
I I I
9 VAC 25-870-66 CHANNEL PROTECTION COMPLIANCE IS MET FOR SUBAREA 'A' VIA SECTION B.3.a (ENERGY I
BALANCE COMPUTATIONS) AND THE LIMITS OF ANALYSIS IS MET VIA SECTION B.4.
9 VAC 25-870-66 FLOOD PROTECTION COMPLIANCE FOR SUBAREA 'A' IS MET VIA SECTION C.2.b (REDUCED
POST -DEVELOPMENT 10-YEAR FLOW) AND THE LIMITS OF ANALYSIS IS MET VIA SECTION C.3.
WATER QUALITY SUMMARY
THE STORMWATER QUALITY REQUIREMENTS FOR THIS ReDEVELOPMENT ARE MET. THE VRRM SPREADSHEET
FOR ReDEVELOPMENTS WAS UTILIZED. THE SITE IS CURRENTLY BEING USED AS A WINERY AND IS
PARTIALLY IMPERVIOUS IN ITS CURRENT STATE.
IN THE POST-ReDEVELOPMENT STATE THE OVERALL IMPERVIOUS AREA IS INCREASED. THIS INCREASE-
i
CAUSES A TOTAL MINIMUM PHOSPHOROUS REMOVAL RATE REQUIREMENT OF 0.99 Ibs/yr FOR THE PROPOSED
PROJECT. THE PROPOSED PLAN WILL SATISFY THIS MINIMUM WATER QUALITY REQUIREMENT BY RELEASING
SWM FACILITY A's RUNOFF TO CONSERVED A/B SOILS IN A SHEET FLOW CONDITION. THE PHOSPHOROUS
REMOVAL RATE PROVIDED IS 1.00 Ibs/yr AND EXCEEDS THE MINIMUM REQUIREMENT. '
POST -DEVELOPMENT SWM PLAN: / / WATERSHED SUMMARY
SCALE 1 = 30' .♦ •� / CN Area, 1-year Flow, 2-year Flow, 10-year Flow,
ac. cfs cfs cfs
DA A (Po st-Dev.) 78 1.54 0.48 0.55 2.70
Post -Development Impervious Area Summary
\ ♦, \� \ \, / Subarea A
♦ / \ \ / : / Existing Building & Overhangs 2,575 sf
♦♦ / / / \ \ / / / / Existing Gravel 12,000 sf
/ / I Existing Concrete 2,300 sf
. / Proposed Gravel 12,200 sf
/ I' I
♦ / / \ / Proposed Building 9,975 sf
39,050 sf
Subarea B (Not Modified)
Existing Building 3,775 sf
/
I
Existing Concrete 4,225 sf
■ I // Existing Gravel 300 sf
■ I 8,300 sf
■ I \•. Water Quality Impervious Areas
■ I :\ \ �. / (Defined by the Proposed Limits of Disturbance)
. \ . Existing Gravel 1,925 sf
\ Proposed Gravel 12,200 sf
■ I \ �,� / Proposed Building 9,975 sf
•. \ \ �. 24,100 sf
\ 100' OF OLF w/ A ELEV=10' I i
•45' OF CONC. FLOW w/ A ELEV=5'
,170' OF CHANNEL F'OW
I
100' OF OLF w/ A ELEV=7' ■ ' A\ \ 1� A \ V \�\ \\ \\ \ \ i
350' OF CONC. FLOW w/ A ELEV=24' ■U
80' OF CHNL FLOW IN DITCH / / \ \ •411*.
■ r \ - - \ \ •. THE UPLAND AREA (NOT MODIFIED
! - / ♦ \ \ �. & NOT PART OF THE CHANNEL / I I 1 \
♦ \ . FLOOD PROTECTION ANALYSIS) I$'
■ \ ♦ REPRESENTED BY SUBAREA B. I I I
THIS AREA BYPASSES THE /
■ - - i , - - ♦ % PROPOSED DEVELOPMENT & ITS
1 ■ \ - - : a /d OUTFALLS REMAIN UNALTERED.
■ j k ♦ SUBAREA B /° ° / �
■ - \ *(NOT MODIFIED / d /
■ - - \ CN=91
■ \ ® : Tc=0.12 rs.
_ d
41
• ► �4 17,
° ° a
°
d I
/ ♦ f �/ � � / I I I I I I
I PROPOSED BUILDING's v I
\ / ■ I / ROOFTOP RUNOFF SHALL BE I 1 \
PIPED DIRECTLY TO SWM
■ / /
■ /` - FACILITY 'A', AS SHOWN.
I
� \ \ � - - - - - � ■ I � POST-DEV.. _ I
■ � SUBAREA EA A
\ \ 1.54 / THE BMP TREATMENT AREA (TOTALING
C_ 0.86 ac.) IS THE PORTION OF SUBAREA A
Tc=0.16, hrs. / E LIMITS
OF DISTURBANCE. THAT IS DTHIS AREA WITHIN FIS BROKEN
■Ii r
DOWN INTO IMPERVIOUS AREAS (0.55
ac. OR 64 /o) AND MANAGED TURF AREAS
(0.31 ac. OR 36%).
- - - _ I / / �•`.y / �-PROPOSED ESC LIMITS OF
DISTURBANCE, TYPICAL. THE
■ I / / ` .`. / BOUNDARY FOR THE LIMITS OF
�•� DISTURBANCE, WHICH TOTALS 1.37ac.,
... DEFINES THE BOUNDARY FOR THE
\ - VRRM WATER QUALITY CALCULATIONS.
�� _ / �� i♦CONTRACTOR SHALL INSTALL THREE
\ CLEANOUTS AT THE END OF THE EXISTING
\\ ----- - - - - - -
• \\ 1° // ♦ AND VC EXTEND O 06" PVC
WITHSTORM
ONEW PIPES
\ \ / / • PIPES TO SWM FACILITY 'A', AS SHOWN.
/
Z /
SWM FACILITY 'A' SHALL RELEASE ITS
RUNOFF INTO A LEVEL SPREADER. THE
RUNOFF WILL THEN CREST THE RIGID LIP
AND SHEET FLOW INTO A CONSERVED
/ AREA WITH A TYPE B SOIL. THE
/ - CONSERVED AREA IS LOCATED ON THE
_ - 1- EAST SIDE OF THE FENCE & SHALL NOT BE
DISTURBED DURING CONSTRUCTION.
General Construction notes for Stormwater Management Plana-
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. Pipe and riser joints are to be watertight within stormwater 0 -
management facilities.
3. For temporary sediment traps or basins which are to be Method of 9VAC25-870-66 Method of 9VAC25-870-66 Method of 9VAC25-870-66 Method of 9VAC25-870-66
converted to permanent stormwater
until
management facilities, Subarea Channel Protection Compliance Limits of Analysis for Channel Protection Flood Protection Compliance Limits of Analysis for Flood Protection
conversion is not to take place until the site is stabilized, p y p y
and permission has been obtained from the County erosion
control inspector. I A Section B.3.a (Energy Balance) N/A (Energy Balance Satisified) Section C.2.b (10-yr. Post Flow < Pre Flow) N/A (10-yr. Post Flow < Pre Flow Satisified)
�TH 0�p
SCOTT R. LLINS 7
,C-) Lic. No. 035791
� 6/3/20 �4'
�o�ASSI ONAL E110�W)
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JOB NO.
192178
SCALE
1"=30'
SHEET NO.
5
DETENTION BASIN CONSTRUCTION NOTES:
FACILITY PLANTING SPECIFICATIONS:
1. THE DETENTION 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 BASIN SHALL BE A MAXIMUM OF 3:1 WHEN A SAFETY BENCH IS PROVIDED ATTHE TOP, AS SHOWN, OR A MAXIMUM OF 4:1
WITHOUT A SAFETY BENCH. THE GENTLE SLOPES WILL REDUCE THE RISK OF EROSION. 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.
4. THE SOILS IN THE STORMWATER BUFFER AREA ARE OFTEN SEVERELY COMPACTED DURING THE CONSTRUCTION PROCESS, TO ENSURE STABILITY THE DENSITY OF THESE
COMPACTED SOILS CAN BE SO GREAT THAT IT EFFECTIVELY PREVENTS ROOT PENETRATION AND, THEREFORE, MAY LEAD TO PREMATURE MORTALITY OR LOSS OF VIGOR. AS A
RULE OF THUMB, PLANTING HOLES SHOULD BE THREE TIMES DEEPER AND WIDER THAN THE DIAMETER OF THE ROOTBALL FOR BALL -AND -BURLAP STOCK, AND FIVE TIMES DEEPER
AND WIDER FOR CONTAINER -GROWN STOCK.
5. AVOID SPECIES THAT REQUIRE FULL SHADE, OR ARE PRONE TO WIND DAMAGE. EXTRA MULCHING AROUND THE BASE OF TREES AND SHRUBS IS STRONGLY RECOMMENDED AS A
MEANS OF CONSERVING MOISTURE AND SUPPRESSING WEEDS.
CONTRACTOR REQUIREMENTS:
1. THE CONTRACTOR SHALL BE RESPONSIBLE FOR LAYOUT OF ALL WORK COVERED UNDER THESE PLANS.
2. LANDSCAPE CONTRACTOR SHALL REFER TO THE STANDARDIZED LANDSCAPE SPECIFICATIONS FOR THE STATE OF VIRGINIA FOR ADDITIONAL INFORMATION. THE CONTRACTOR
SHALL ABIDE BY ITS CONTENTS; HOWEVER ANY NOTES OR SPECIFICATIONS ON THE PLANS SHALL SUPERSEDE THOSE OUTLINED IN THE SPECIFICATIONS MANUAL (COPIES ARE
AVAILABLE FOR A FEE FROM THE VIRGINIA CHAPTER OF THE AMERICAN SOCIETY OF LANDSCAPE ARCHITECTS, VIRGINIA NURSERYMEN'S ASSOCIATION, INC. AND THE VIRGINIA
SOCIETY OF LANDSCAPE DESIGNERS). ALL DISCREPANCIES SHALL BE BROUGHTTO THE ATTENTION OF COLLINIS ENGINEERING PRIOR TO THE CORRESPONDING CONSTRUCTION
ACTIVITY.
3. ALL PLANT MATERIAL SHALL MEET THE MINIMUM SPECIFICATIONS AND STANDARDS DESCRIBED IN THE CURRENT ISSUE OF THE AMERICAN STANDARD FOR NURSERY STOCK,
PUBLISHED BY THE AMERICAN ASSOCIATION OF NURSERYMEN, 1250 STREET, NW, SUITE 500, WASHINGTON, DC 20005.
4. THE CONTRACTOR SHALL VERIFY ALL DIMENSIONS IN THE FIELD AND NOTIFY THE DESIGNER OF ANY VARIANCE FROM THE PLAN.
5. THE LANDSCAPE CONTRACTOR IS RESPONSIBLE FOR VERIFYING THE LOCATION OF ANY ONSITE UTILITIES (CALL MISS UTILITY AT 1-800-552-7001 BEFORE ANY EXCAVATION).
6. REFER TO THE APPROVED FINAL SITE PLANS FOR ANY DETAILED SITE INFORMATION.
7. ALL WORK SHALL BE COORDINATED WITH OTHER PARTIES.
8. PLANTS WILL BE PREPARED FOR SHIPMENT IN A MANNER THAT WILL NOT CAUSE DAMAGE TO THE BARK, BUDS, BRANCHES, STEMS, OR OVERALL SHAPE OF THE STOCK.
CONTAINER GROWN PLANTS WILL BE TRANSPORTED IN THE CONTAINERS IN WHICH THEY HAVE GROWN.
9. ALL PLANT MATERIAL, UNLESS OTHERWISE SPECIFIED, SHALL BE UNIFORMLY BRANCHED AND HAVE A VIGOROUS ROOT SYSTEM. PLANT MATERIAL SHALL BE HEALTHY, VIGOROUS,
AND FREE FROM DEFECTS DECAY DISEASES INSECT PEST EGGS AND ALL FORMS OF INFESTATION. ALL PLANT MATERIAL SHALL BE FRESH FREE FROM TRANSPLANT SHOCK OR
VISIBLE WILT. PLANTS DEEMED UNHEALTHY WILL BE REJECTED.
10. ALL CONTAINER STOCK SHALL HAVE BEEN PROPAGATED IN A CONTAINER LONG ENOUGH FOR THE ROOT SYSTEM TO HAVE DEVELOPED SUFFICIENTLY TO HOLD ITS SOIL.
CONTAINER STOCK WITH POORLY DEVELOPED ROOT SYSTEMS WILL NOT BE ACCEPTED.
11. PLANTS NOT INSTALLED ON THE DAY OF ARRIVAL ON SITE SHALL BE STORED AND PROTECTED BY THE CONTAINER. OUTSIDE STORAGE AREAS WILL BE SHADED AND PROTECTED
FROM THE WIND AND SUN. PLANTS STORED ON SITE SHALL BE PROTECTED FROM ANY DRYING AT ALL TIMES BY COVERING THE BALLS OR ROOTS WITH MOIST SAWDUST, WET
BURLAP, WOOD CHIPS, SHREDDED BARK, PEAT MOSS, OR OTHER SIMILAR MULCHING MATERIAL.
12. THE OWNER RESERVES THE RIGHT TO SUBSTITUTE PLANT MATERIAL TYPE, SIZE AND/OR QUANTITY. ANY SUBSTITUTIONS MUST BE APPROVED BY THE INSPECTOR INITIALLY, AND
THEN THE DESIGNER.
13. MINOR FIELD ADJUSTMENTS MAY BE NECESSARY DUE TO SITE CONDITIONS (EX: ROOTBALL AND UTILITY CONFLICT). MAJOR ADJUSTMENTS MUST BE APPROVED BY THE DESIGNER.
14. NO PLANTING SHALL OCCUR WHEN THE SOIL IS FROZEN.
15. PLANT MATERIAL SHALL BE PLACED IN EXISTING SOIL WITH EACH PLANTING PIT EXCAVATED TO A SIZE SUFFICIENT TO CONTAIN THE ENTIRE ROOT BALL OR ROOT MASS, WITHOUT
CRAMPING ROOTSTOCK.
16. THE CONTRACTOR SHALL MAINTAIN A ONE (1) CALENDAR YEAR 90% CARE AND REPLACEMENT WARRANTY FOR ALL PLANTINGS. THE PERIOD OF CARE AND REPLACEMENT SHALL
BEGIN AFTER INSPECTION AND APPROVAL OF THE COMPLETE INSTALLATION OF ALL PLANTS AND CONTINUE FOR ONE CALENDAR YEAR.
17. THE CONTRACTOR IS RESPONSIBLE FOR REMOVAL AND DISPOSAL OF TRASH AND DEBRIS WITHIN THE LIMITS OF THE PLANTING ON A DAILY BASIS.
18. THE CONTRACTOR WILL NOT BE RESPONSIBLE FOR PLANT MATERIAL THAT HAS BEEN DAMAGED BY VANDALISM, FIRE, OR OTHER ACTIVITIES BEYOND THE CONTRACTOR's
CONTROL.
FACILITY CONSTRUCTION
1. THE DETENTION BASIN MAY SERVE AS A SEDIMENT BASIN AND/OR TRAP 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 THE PERMANENT RISER 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 POND IN MIND. APPROPRIATE PROCEDURES SHALL BE IMPLEMENTED TO PREVENT DISCHARGE OF TURBULENT WATERS WHEN THE BASIN IS BEING
CONVERTED TO AN DETENTION BASIN.
2. THE DETENTION BASIN SHALL ONLY BE CONSTRUCTED AFTER THE CONTRIBUTING DRAINAGE AREA TO THE POND IS COMPLETELY STABILIZED. IF THE PROPOSED POND SITE WILL BE
USED AS A SEDIMENT TRAP 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 THAT THEY 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 PROJECT AREA IF REQUIRED TO THE DESIRED SUB -GRADE.
5. INSTALL E&S CONTROLS PRIOR TO CONSTRUCTION OF THE BASIN, INCLUDING TEMPORARY DE -WATERING DEVICES AND STORMWATER DIVERSION PRACTICES. ALL AREAS
SURROUNDING THE 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:
Tabge 14.4. Gray Liner, Spedficarlons
Property
Test Method
Unit
Speciflication
Pemleability
ASTM ❑-2434
Cmisec
1 X 10
Plasticity Index of CIay
ASTM D--423M.24
%
Not less than 15
Liquid Limit of Clay
ASTM D-2216
%
Not less than 30
Clay Particles Passing
ASTM D-422
%
Not less than 30
Clay Compaction
ASTM D-2216
30
9590 of standard proctor densi
;Jource: Vlr{JIR13 S101FMWater Management HandbocK (1 8sj
9. UPON COMPLETION OF THE EMBANKMENT GRADING THE CONTRACTOR SHALL EXCAVATE/GRADE UNTIL THE APPROPRIATE ELEVATION AND DESIRED CONTOURS ARE ACHIEVED
PROPOSED io' WIDE TOP OF
DAM
(
LEV.=68
.00') SHALL SERVE.
AS A
SAFETY
BE
ACH. TOPI
OF DAM
CROSS
SLOPE
SHAL
NOT EX
EED 2%.
DAM TO
NCLUDE
4 25' WID
EMERGENCY
690 SPI
LWAY WITH
A CREST
ELEV.
682.75'.
685
100-yr PEAK WSE=682.96
10-yr PEAK WSE=682.30
2-yr PEAK WSE=681.39
1-yr PEAK WSE=680.79 680
EXISTING
GRADE �
PROPOSED 024" HDPE STANDPIPE w/
TRASHRACK TO SERVE AS THE RISER
6 7 5
STRUCTURE. RISER RIM ELEV.=681.75'. RISER
TO INCLUDE (1) ONE PERMANENT 04"
LOW -FLOW ORIFICE WITH AN INVERT
ELEV.=678.75' (LOCATED AT THE LOW -POINT OF
THE DETENTION CELL). ALL ORIFICE OPENINGS
SHALL HAVE STATE APPROVED TRASHRACKS,
TYPICAL. SEE THE DETAILS ON THIS SHEET, OR
670
EQUIVALENT, FOR ADDITIONAL INFORMATION.
PROPOSED BASIN's FLOOR SHALL BE
SLOPED TO DRAIN TO THE RISER
(0.50% MIN.). CONTRACTOR SHALL
ENSURE POSITIVE DRAINAGE
THROUGHOUT THE FACILITY.
665
J J
d7
W W
I rj
10' WIDE TOP OF
c
co
DAM ELEV.=684',
W
TYP.
685\1 1 685
PROPOSED cr
GRADE
•••
/ EMBANK ENT INI ACCORDANCE
ROPOS D W/ THE DESIGN SHOW ON
GRADE
38.10 LF OF 08" HDPE @ 0.65%
(11=678 25, 10= 78.00) 685
81.50 L.F OF 08' HDPE @ 0.50%
(II=67 .00, IO 677.59) 1.00 LF OF 08" F DPE @ 9.0%
II= 77.59 I =677.5()
W
677.50
/ nIIII � 08" INV RT & LEVEL
II /ll ITI TT flf�(�Tr(I(ll.I 680
PROPOSED VDPT STD. qL.
Al RIPRAP LINED OUTLET
PROTECTION w/ FILTER
FABRIC UNDERLAYMENT
(L=6', Wi=3', W2=7', D=2')
TO PREVENT FLOATATION THE RISER BASE
& BARREL SHALL BE FIRMLY EMBEDDED 6"
INTO AN 18" THICK REINFORCED
CONCRETE FOUNDATION THAT IS 4'x4',
AND BURIED BELOW GROUND.
675.114± EG
10, 675
PROPOSED 15' LONG LEVEL SPREADER (LS) WITH A 10'
LONG, 12" DEEP PLUNGE POOL AND A 6" WIDE RIGID
LIP. LS TO INCLUDE A SLOPED 3' (MIN.) LONG VDOT
STD. CL. AI RIPRAP LINED EMBANKMENT
DOWNSTREAM FROM THE RIGID LIP EXTENDING TO
THE EXISTING FENCE LINE. ALL RIPRAP TO INCLUDE
FILTER FABRIC UNDERLAYMENT & BE A MIN. OF 24"
DEEP. LS TO INCLUDE A 6"-21" MOUND AT THE END
OF THE LS (ELEV. 678) FORCING WATER OVER THE
LEVEL RIGID LIP TO THE EAST. SEE THIS SHEET FOR
ADDITIONAL LS DETAILS.
O r O
00 � 00 �
0+50 1+00 1+50 2+00 2+50
SWM FACILITY A SECTION
25' PROPOSED 25' WIDE VDOT CL.
AI RIPRAP LINED EMERGENCY
680 680 SPILLWAY w/ 4:1 SIDE SLOPES
EXISTIN & CREST ELEV.=682.75'
GRADE
675 675
PROFILE SCALES
1"=5' (V)
J J O 0 1"=50' (H)
W W O 4 1-9 4
00 DO 00 00
W 1.L. (0 co
0+50
SWM FACILITY A SPILLWAY
CONSERVATION AREA & LEVEL SPREADER REQUIREMENTS:
FOR THE BOTTOM AND SIDE SLOPES OF THE BASIN.
10. CONTRACTOR SHALL THEN CONSTRUCT THE EMERGENCY SPILLWAY IN CUT OR STRUCTURALLY STABILIZED SOILS.
MAINTENANCE INSPECTIONS:
11. THE CONTRACTOR SHALL THEN FINISH CONSTRUCTION OF ALL OUTLET STRUCTURES, INCLUDING DOWNSTREAM RIP -RAP APRON PROTECTION IF APPLICABLE.
ANNUAL INSPECTIONS SHALL BE CONDUCTED IN THE NON -GROWING SEASON DURING THE FALL AND
12. THE CONTRACTOR SHALL NEXT STABILIZE EXPOSED SOILS BY HYDROSEEDING OR SEEDING OVER STRAW.
WINTER MONTHS. INSPECTIONS SHALL TRIGGER MAINTENANCE OPERATIONS, AS REQUIRED.
13. THE CONTRACTOR SHALL THEN INSTALL THE APPROPRIATE BASIN LANDSCAPING IN ACCORDANCE WITH THE APPROVED PLANS, IF APPLICABLE.
MAINTENANCE MAY INCLUDE, BUT IS NOT LIMITED TO, SEDIMENT REMOVAL, SPOT RE -VEGETATION AND
REPAIRS TO THE LEVEL SPREADER. THE CONTRACTOR SHALL CONDUCT THE INSPECTIONS FOLLOWING
FACILITY MAINTENANCE:
THE FIRST YEAR THE PROJECT IS COMPLETED, AND THE OWNER SHALL CONDUCT THE INSPECTIONS
MAINTENANCE OF THE DETENTION BASIN IS DRIVEN BY ANNUAL INSPECTIONS THAT EVALUATE THE CONDITION AND PERFORMANCE OF THE FACILITIES. DURING THESE INSPECTIONS
THEREAFTER.
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 BASIN.
INSPECTIONS SHALL INCLUDE THE FOLLOWING AT MINIMUM:
2. MONITOR THE GROWTH OF THE GROUNDCOVER AND ANY TREES AND SHRUBS PLANTED, AS APPLICABLE. RECORD THE SPECIES AND THEIR APPROXIMATE COVERAGE, AND NOTE
i. ENSURE FLOW PATHS ARE NOT SHORT-CIRCUITED IN THE LEVEL SPREADER AND THROUGH THE
665
3+00
KEY LEVEL SPREADER
INTO EXISTING GRADE
RIPRAP PLUNGE POOL
RIPRAP APRON
v
6' X 6" TREATED
t M
TIMBERS OR
NORETE LIP
�Q
LENGTH OF LEVEL SPREADER
o
} LIP TO BE BASED ON DESIGN FLOW
AND ALLOWABLE VELOCITY
_ 1
TOP OF LEVEL SPREADER
SHALL BE FLAT
1-3 IN. COURSE AGGREGATE
OR OTHER LINING AS
DESIGNED FOR STABILITY
PLAN VIEW
DIMENSION BASED ON UNDISTURBED EXISTING GRADE
DESIGN DISCHARGE 5%(20.11 OR LESS. IF VEGETATED
FILTER STRIP OR CONSERVED
OPEN SPACE, FIRST 10 FEET LESS
2' MIN THAN 2%
3' MIN
10' PAIN
3' MIN
2-
MIN. DEPTH BASED O
REQUIRED STONE SIZE
SECTION A -A
THE PRESENCE OF ANY INVASIVE PLANT SPECIES,AS APPLICABLE. CONSERVATION AREA. r
Fr ur e 2.4. Level Spreader: Pr �e or Clrrrr7rrel Flow to Filter S1rr orrConser�ved
3. INSPECT THE CONDITION OF STORMWATER INLETS TO THE BASIN FOR MATERIAL DAMAGE, EROSION OR UNDERCUTTING. 2. ENSURE DEBRIS AND SEDIMENT HAS NOT ACCUMULATED.
g 1 1
4. INSPECT THE BANKS OF UPSTREAM AND DOWNSTREAM CHANNELS FOR EVIDENCE OF SLOUGHING, ANIMAL BURROWS, BOGGY AREAS, WOODY GROWTH, OR GULLY EROSION 3. CHECK FOR SCOUR AND EROSION WITHIN THE LEVEL SPREADER SYSTEM AND CONSERVATION AREA. Open? .Space
THAT MAY UNDERMINE EMBANKMENT INTEGRITY. 4. CHECK FOR FOOT OR VEHICULAR TRAFFIC DAMAGE IN THE STONE.
5. INSPECT BASIN OUTFALL CHANNEL FOR EROSION, UNDERCUTTING, RIP -RAP DISPLACEMENT, WOODY GROWTH, etc. S. ENSURE VEGETATIVE DENSITY MEETS OR EXCEEDS go% OF THE CONSERVATION AREA.
6. INSPECT CONDITION OF PRINCIPAL SPILLWAY AND RISER FOR EVIDENCE OF SPALLING, JOINT FAILURE, LEAKAGE, CORROSION OR OTHER FAILURES.
7. INSPECT CONDITION OF ALL TRASH RACKS, REVERSE SLOPED PIPES OR FLASHBOARD RISERS AS APPLICABLE FOR EVIDENCE OF CLOGGING, LEAKAGE, DEBRIS ACCUMULATION OR IN THE EVENT MAINTENANCE IS REQUIRED DURING THE ABOVE NOTED INSPECTIONS, CORRECTIVE
OTHER FAILURES. MEASURES SHALL BE COMPLETED IMMEDIATELY.
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.
9. INSPECT INTERNAL AND EXTERNAL SIDE SLOPES OF THE BASIN FOR EVIDENCE OF SPARSE VEGETATIVE COVER, EROSION, OR SLUMPING. MAINTENANCE OPERATIONS:
10. OWNER OR CONTRACTOR SHALL MAKE NEEDED REPAIRS IMMEDIATELY. ASIDE FROM THE ABOVE MENTIONED MAINTENANCE OPERATIONS, CONSERVATION AREAS HAVE MINIMAL
MAINTENANCE REQUIREMENTS. SPRING CLEANUP, PERIODIC MOWING, REPAIR OF THE LEVEL SPREADER
FACILITY INSPECTION: AND ENSURING A DENSE, HEALTHY GRASS GROUNDCOVER ARE KEY MAINTENANCE OPERATIONS.
MULTIPLE INSPECTIONS ARE CRITICAL TO ENSURE THE BASIN(s) ARE PROPERLY CONSTRUCTED. BECAUSE THE TIMING OF THE INSTALLATION IS DICTATED BY THE CONTRACTOR, THE MOWING SHALL BE COMPLETED AT LEAST TWICE A YEAR TO PREVENT FURTHER WOODY GROWTH.
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 DETENTION BASIN's CONSTRUCTION PROCESS: n COUNTY OF ALBEMAPJ-E
1. PRE -CONSTRUCTION MEETING . * fi i7epartrnent of Community I7eveloprllent
2. INITIAL SITE PREPARATION (INCLUDING INSTALLATION OF PROJECT E&S CONTROLS)'
3. EXCAVATION/GRADING (e.g., INTERIM/FINAL ELEVATIONS) ' za�� Record
7�
4. DETENTION BASIN INSTALLATION (e.g., INTERIM AND FINAL ELEVATIONS) Construction Record Drawings (As -built) for VSMP
5. INSTALLATION OF THE EMBANKMENT, THE RISER/PRIMARY SPILLWAY, AND THE OUTLET STRUCTURE(s).
6. PLANTING PHASE (WITH AN EXPERIENCED LANDSCAPE ARCHITECT PRESENT/DIRECTING IF APPLICABLE)
7. FINAL INSPECTION (DEVELOP A PUNCH LIST FOR FACILITY ACCEPTANCE) The following is a list of information required on construction record drawings for
Stormll�ax TV
ROUND SERIES TRASH RACK
CONCRETE MANHDLE
STANDARD 60 IMCH RACK SHOWN
DIMENSIONS IN INCHES
(OR EQUIVALENT)
H0PE9T:PLICTLIFW PLAMODY
PLUTIC S%UT10 49. IN C-
4LA3-CR SECTION
RLM4':A0u1 7011h9CESE
L
PLAN 81DF MEW ISOMETRIC
Storm RakTm Round Serlagfir Con to Manhole
Part No.
Dkn A
am B
0Iln C
Min ID
Min OD
RS-24
17%
14 }4
28
24
30
Ar36
21 Y4
14 %
4a
35
43
asag
27 3/4
19
54 .
44
57
PS-60
27}5
t$}'i
601
60
73
Pl&ttk SDI AIC56t, I111t. MTDMER
PIG Box 4386, WTnI hcstrr, VA 12ffM
i38 MCkiiIm lid. WIPOesar. VA ZZW3
,877)877-5727phow PIt CL
4540) 722.2219 fats
htip= f fwv:w.plast]c-soLUtlon,rfl m
CONCRETE STRUCTURE DIMENSIONS
INgor- STRUCTURE DIMENSION
OUTSIDE STRUCTURE DIMENSION
AVAILABLE OPTIONS
G13058 BRAGING FOR OVERHANG
HDPE ANTI -VORTEX PLATE
aVE:
ORAM erg
APP4 BY:
OVAL
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 recorddrawings.
A. A signed and dated professional seal of the preparing engineer or surveyor.
B. The n ame and address of the firm and individual preparing die drawings on the title sheet.
C. Tlic constructed location of all items associated with each faciIity, and the inspection Ile cords to verify
proper dimensions, materials and installation. The items include, but are not liinited to the following:
1. Inspection Records and photographs far pipe trenches and bedding, including uncle rdra ill s.
2. Video Pipe Inspection for any pipes which are not accessible or viewable.
. Updated Location with gemcoordinates of all facilities.
4. Verified Drainage Area maps for the drainage area trleated, and for drain age to the facil ities.
5. Current IihysicaI and topographic survey for all earthen structure s. Ponds should include a survey
of the pond botto in. Surveys should verify pond volumes are per desig.n. Corrections may be required
for alterations from the design.
6. Plants, location and tvpe.
7. Plans and profiles for all cLiIverts, Pipes, Risers, Weirs and Drairage Structures - Display t13e
installed t3T of drainage structures, culvertlpipe size, Weirs, materials, inlets orend treatinent(s),
inlet and outlet protection, alignment and invert elevations compared to design.
8. Computations: For significant deviations from design, provide sealed computations verifying that
Lk 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 prov isions - Display the constructed location of all safety
provisions; fences, guardrail, including the type, length and applied end treatments, compared to
design.
12. Material layers - bic6iter media, stone layers. sand layers. keyways and cores must be verified as to
mateTial types and depths. Include inspection reports, boring or test pit reports and materials
certifications. Biufilter media must be an approved state nuK.
13. Access roads - show location of access roads, surface treatment, drainage, etc, as applicable.
14. Compaction reports are required #o verify fill compaction in dams.
15. Ma n u fac I u L-v rs ccrd ficatiQns for pr4opric1my BMP's certifying proper installation and functioning.
SWM FACILITY 'A' & LEVEL SPREADER DETAIL:
SCALE 1 " = 30'
f
1
PROPOSED 6' WIDE VDOT STD. CL. Al RIPRAP
LINED O - - - - UTLET PROTECTION w/ FILTER FABRIC /
UNDERLAYMENT TO CHANNEL BOTTOM
PROPOSED io' WIDE GRASS
- LINED GRADED ACCESS
= PROPOSED BASIN's FLOOR SHALL BE
SLOPED TO DRAIN TO THE RISER
(0.50% MIN.). CONTRACTOR SHALL
ENSURE POSITIVE DRAINAGE
THROUGHOUT THE FACILITY.
PROPOSED io' WIDE TOP OF DAM SHALL
SERVE AS A SAFETY BENCH. TOP OF DAM
- - - 10 / CROSS SLOPE SHALL NOT EXCEED 2%.
/ SEE THIS SHEET FOR
SCALED PROFILES OF
THE SWM FACILITY, TYP.
+
/j 'PROPOSED 25' WIDE VDOT CL.
AI RIPRAP LINED EMERGENCY
SPILLWAY w/ 4:1 SIDE SLOPES
&CREST ELEV =682 75'
.
LL.WLL�WLL- LL .. .
TO PREVENT FLOATATION THE RISER BASE & t PROPOSED 15' WIDE x 50' LONG
BARREL SHALL BE FIRMLY EMBEDDED 6" INTO AN CONSERVED OPEN SPACE AREA TO
18" THICK REINFORCED CONCRETE FOUNDATION / \ PREVENT FUTURE DEVELOPMENT,
THAT IS 4'x4', AND BURIED BELOW GROUND. 1 77.50 DISTURBANCE & CLEARING IN
THIS AREA.
0 R & LEVEL
38.10 LF OF 08" HDPE @ 0.65% OUTLET PROT CTION
PROPOSED 024" HDPE STANDPIPE w/ TRASHRACK TO SERVE AS - (II=678.25, IO=678.00)
THE RISER STRUCTURE. RISER RIM ELEV.=681.75'. RISER TO 81.50 LF OF 08" HDPE @ 0.50% /
INCLUDE (1) ONE PERMANENT 04" LOW -FLOW ORIFICE WITH (II=678.00, I0=
AN INVERT ELEV.=678.75' (LOCATED AT THE LOW -POINT OF 677.59)
THE DETENTION BASIN). ALL ORIFICE OPENINGS SHALL HAVE 1.00 LF OF 08" HDPE @ 9.0%
STATE APPROVED TRASHRACKS, TYPICAL. SEE THE DETAILS ON (II=677.59, IO=677.50) 677.20 EG 675.33± IEG
THIS SHEET, OR EQUIVALENT, FOR ADDITIONAL INFORMATION.
PROPOSED VDOT STD. CL. Al RIPRAP LINED r 1� ,� - 4.0% - 2+� 7
OUTLET PROTECTION w/ FILTER FABRIC /
UNDERLAYMENT T (L=6', Wi=3', W2=7', D=2') \/� 2-yq 674.9 ± EG
2+00 4,5% . - . . y
PROPOSED 15' LONG LEVEL SPREADER (LS) WITH A 10' LONG, 12" DEEP PLUNGE POOL AND A 677.05 EG / `�'
6" WIDE RIGID LIP. LS TO INCLUDE A SLOPED 3' (MIN.) LONG VDOT STD. CL. AI RIPRAP �10'
LINED EMBANKMENT DOWNSTREAM FROM THE RIGID LIP EXTENDING TO THE EXISTING \ 676 25 677.25 TO OF RIGID LS LIP//
FENCE LINE. ALL RIPRAP TO INCLUDE FILER FABRIC UNDERLAYMENT & BE A MIN. OF 24"
DEEP. LS TO INCLUDE A 6"-21" MOUND AT THE END OF THE LS (ELEV. 678) FORCING WATER \
OVER THE LEVEL RIGID LIP TO THE EAST. EE THIS SHEET FOR ADDITIONAL LS DETAILS.
_ /
GENERAL SWM NOTES:
i. STATE APPROVED TRASH RACKS SHALL BE INSTALLED ON ALL ORIFICE OPENINGS. SEE DETAILS ON THIS SHEET, OR EQUIVALENT,
FOR INSTALLATION.
2. CONCRETE FOUNDATIONS SHALL BE INSTALLED ON ALL RISER STRUCTURES MEETING MINIMUM VESCH 3.14 SPECIFICATIONS.
3. CONTRACTOR SHALL HIRE A THIRD PARTY GEOTECHNICAL ENGINEER TO ENSURE THE EMBANKMENTS ARE STRUCTURALLY
SOUND. 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 AND THE REMAINING
DISTURBED EMBANKMENT SLOPES SHALL BE STABILIZED WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF ML,
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 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 SHALL HAVE A MAXIMUM 3:1 SLOPE.
5. THE PERMANENT SWM FACILITY SHALL BE USED AS A TEMPORARY SEDIMENT TRAPPING DEVICE DURING CONSTRUCTION. THE
NOTES:ROM
CONSTRUCTION OF THE PERMANENT SWM RISER, BARREL, SPILLWAY & EMBANKMENT SHALL BE COMPLETED WITH THE
1. FE10'FSPREADER
1. FIRSTTS FT LEVEL SPREADER
CONSTRUCTION OF THE TEMPORARY SEDIMENT TRAP. THE RISER & BARREL SHALL REMAIN WATERTIGHT AND SHALL NOT BE
LIP MUST BE 2% OR LESS.
2. TIEBACK ENDS OF LEVEL
OPERATIONAL UNTIL THE ESC INSPECTOR APPROVES THE CONVERSION OF THE TEMPORARY TRAP TO A PERMANENT FACILITY.
SPREADER INTO THE SLOPE TO
AT THE TIME OF THE TRAP's CONVERSION THE CONTRACTOR SHALL REMOVE SEDIMENT LADEN MATERIAL AND SHALL ENSURE
AVOID SCOURING.
THE GRADES AND MINIMUM VOLUME SHOWN ON THIS PLAN ARE ACHIEVED. THE CONTRACTOR SHALL REASONABLE MINIMIZE
SOIL COMPACTION DURING THE CONVERSION.
EMBANKMENT NOTES:
AFTER AN INVESTIGATION OF THE SITE's SOILS, A SITE VISIT, AN ANALYSIS OF THE SURVEYED TOPOGRAPHY AND AN EXAMINATION OF VA DEQAPPENDIX 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 DESIGN PROPOSED. A SUMMARY OF THE EMBANKMENT DESIGN REQUIREMENTS ARE LISTED BELOW AND ON THIS SHEET, MANDATING THE CONTRACTOR MEET THESE
REQUIREMENTSATA MINIMUM.
THE EMBANKMENTS SHALL HAVE A COMPACTED CLAY CORE WITH A CUTOFF TRENCH & BE IN ACCORDANCE WITH THE DETAILS SHOWN ON IN THIS PLAN. BERMS AND SPILLWAYS SHALL BE
STABILIZED WITH EC-3 MATTING & THE REMAINING DISTURBED SLOPES SHALL BE STABILIZED WITH EC-2 MATTING. ALL BERM FILL MATERIAL SHALL CONSIST OF ML 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.
SE CTION A-9: TV- PICAL GF PHICA 1 DETAIL S
Hamogneous fill
�r 4' min
CUE off trend+-4' below sUtnble
rrbok Ok I - J
evil or rock L _ `. -•- - - - - -
TYP"L HOMOGENEOUS
E40ANKMENT
I �PI1 �UtJk Cobrse fir
Perforated WlOdDr - 4f IJ '"'-
r•aundQthn drain
FOUNDATION DRAIN
dram
sand, 1 v mi
dlvin o�lnet
ock koc
;4w w iun flit r
CHIMNEY DRAIN
Tmns6w fill
Blanket drain
ELAN K ET DRAIN
Rod v gr l
dr�ili
Trorraition ifiIte r
TIDE DRAIN
301irce: SCSEre r2e rare Fi d lyanUul
Figure A-Ia. Homogeneon s -Ewhar kiverrrs sr; -' Se epage Controls
a
1 /2" Tino plated hffnk
aktach$d with 3f�9" fask�n�r
v
Ion
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HPPF sl•rW7I.{Irt.-1 P10:4 r. MCI-
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LUTIONS Winriester 1'A 22604
(OR EQUIVALENT)
INC. s 77-977-572?'
�ra'a.pl��ic-��IL ,ram
YH
SCOTT R. LLINS ,
C-) Lic. No. 035791
6/3/20 �4
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