HomeMy WebLinkAboutWPO201600011 Plan - VSMP 2016-09-26V MP PL (WP020160001FOR
HARVEST MOON PHASE I
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No. 33028
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ONAL
SW 1 Cover Sheet
SW2 Notes & Details
SW3 Existing Conditions / Demo Plan �
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SW4 Pre -Developed Drainage Area Map?
SW5 Post -Developed Drainage Area Map
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SW6 Stormwater Management Plan
SW7 Fine Grading Plan
SW8 Virginia Runoff Reduction Method Calculations
SW9 Erosiion & Sediment Control Plan
SW 10 Storm Sewer Profile, Calculations and Drainage Areas
SW 11 E&SC Details
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STORMWATER MANAGEMENT NARRATIVE
AS DISCUSSED IN PRIOR MEETINGS WITH ENGINEERING, THE PHASE 'I SITE z
CAN UTILIZE THE EXISTING STORMWATER MANAGEMENT POND ADJACENT ®�
TO THE DOWNSTREAM KEGLER'S BUILDING TO MEET THE WATER QUANTITY
REQUIREMENTS FOR THE SITE SINCE THE OVERALL IMPERVIOUS AREA FOR A
THE SITE IS REDUCED. IN ORDER TO MEET WATER QUALITY REQUIREMENTS
FOR PHASE 1, THE OWNER IS PROPOSING TO PURCHASE PHOSPHOROUS
CREDITS. PLEASE ALSO NOTE THAT AN ADEQUATE CHANNEL OUTFALL
ANALYSIS TO THE KEGLER'S POND HAS BEEN PERFORMED WITH THE WPO
PLAN. BOTH PHASE 1 AND PHASE 2 HAVE BEEN ANALYZED TO SHOW THAT
AN ADEQUATE CHANNEL EXISTS TO CONVEY SITE OR OFFSITE WATER TO
THE EXISTING KEGLER'S POND.
PRASE 1
TOTAL LAND DISTURBANCE FOR PHASE 1' IS 2.39 ACRES
TOTAL IMPERVIOUS AREA I:L'
PRE -DEVELOPED 1.93 AC
POST-IDEVELOPED 1.76 AC >
0.17 AC REDUCTION IN IMPERVIOUS AREA APPROVED
by the Albemarle County
Community Delo n ent Department
Dater 14
File
- —
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1:4 NL Eel 10110 21 17;=
14
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INDEX TITLE:
C)
PRASE 1
TOTAL LAND DISTURBANCE FOR PHASE 1' IS 2.39 ACRES
TOTAL IMPERVIOUS AREA I:L'
PRE -DEVELOPED 1.93 AC
POST-IDEVELOPED 1.76 AC >
0.17 AC REDUCTION IN IMPERVIOUS AREA APPROVED
by the Albemarle County
Community Delo n ent Department
Dater 14
File
- —
■ � n
1:4 NL Eel 10110 21 17;=
14
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INDEX TITLE:
OWNER
HG LAND LLC
109 BLUEBERRY ROAD
CHARLOTTESVILLE, VA 22901
DEVELOPER:
MARK HAHN
HARVEST MOON CATERING COMPANY
946 GRADY AVENUE. SUITE 11
CHARLOTTESVILLE, VA 22903
LEGAL REFERENCE & SOURCE OF TITLE:
DB 4687/15
MAGISTERIAL DISTRICT: RiO
SOURCE OF BOUNDARY SURVEY: DOMINION ENGINEERING 10/22/2015
SOURCE OF TOPOGRAPHY: FIELD SURVEY BY DOMINION ENGINEERING 10/22/15. VERTICAL DATUM: NAVD 88
THE AREA SHOWN HEREON IS LOCATED IN ZONE 'X" AND DOES NOT FALL WITHIN FLOOD HAZARD ZONE 'A' FOR A
100 YEAR FLOOD AS SHOWN ON FEMA MAP No 51003CO2780. THIS DETERMINATION HAS BEEN MADE BY GRAPHIC METHODS,
NO ELEVATION STUDY HAS BEEN PERFORMED AS A PORTION OF THiS PROJECT.
WATERSHED: SOUTHFORK RIVANNA (BELOW RESERVOIR)
BENCHMARK(S): TOP OF EXISTING SANITARY MANHOLE 'SSMH-A' ON SOUTH END OF SiTE = 483.54'
WATER SOURCE: ALBEMARLE COUNTY SERVICE AUTHORITY
SEWER SERVICE: PRIVATE SEWER THAT CONNECTS TO ALBEMARLE COUNTY SERVICE AUTHORITY
MAXIMUM BUILDING HEIGHT: 35'
PRIMARY ZONING: C1, AIA
THIS SITE IS NOT LOCATED IN A WATER SUPPLY OVERLAY DISTRICT
-FRONT MIN: 10' FROM RIGHT-OF-WAY OR EXTERIOR EDGE OF SIDEWALK IF SIDEWALK IS OUTSIDE OF RIGHT-OF-WAY.
-FRONT MAX: 30' FROM THE RIGHT-OF-WAY OR THE EXTERIOR EDGE OF SIDEWALK IF SIDEWALK IS OUTSIDE OF RIGHT-OF-WAY.
-SIDE AND REAR MIN: IF THE ABUTTING LOT IS ZONED RESIDENTIAL, RURAL AREAS, OR THE MONTiCELLO HISTORIC DISTRICT:
(1) NO PORTION OF ANY STRUCTURE, EXCLUDING SIGNS, SHALL BE LOCATED CLOSER THAN 50 FEET FROM THE DISTRICT
BOUNDARY, AND (II) NO OFF-STREET PARKING OR LOADING SPACE SHALL BE LOCATED CLOSER THAN 20 FEET TO THE
DISTRICT BOUNDARY. IF THE ABUTTING LOT IS ZONED COMMERCIAL OR INDUSTRIAL, ANY PRIMARY STRUCTURE SHALL BE
CONSTRUCTED AND SEPARATED IN ACCORDANCE WiTH THE CURRENT EDITION OF THE BUILDING CODE.
-SIDE AND REAR MAX: NONE
CURRENT USE: VACANT
PROPOSED USE: * PHASE 1: 12,160 SF CATERING COMPANY PHASE 2: 16,000 SF OFFICE
* The proposed Phase 1 use is a by right use in a C1 district under 22.2.1(a)6 as determined in meeting with
Zoning Administrator on January 12, 2016.
"22.2.1(a)& Retail and sales and service Establishments: Food and grocery stores including specialty shops such
as bakery, candy, milk dispensary and wine and cheese shops."
Specifically, the use is for a catering company, which is essentially a specialtyfood shop which specializes in the
sale and presentation of prepared foods as a service to its retail customers.
A catering company is a retail and sales and service establishment that is similar in general character to
several of the other uses listed as permitted by -right in a C-1 district. Furthermore, it is similar in terms of
locational requirements, operational characteristics, visual impact and traffic generation to several listed
by -right uses, including but not limited to uses a. 5 & 6 and b.1 & 10.
PHASING SUMMARY./LAND SCHEDULE
EXISTING SITE AREA= 4.17 AC.
NOTE: SINCE IMPERVIOUS AREA 6 80% AND SITE IS NOT LOCATED IN AN ENTRANCE CORRODOR,
NO LANDSCAPE PLAN IS REQUIRED NTH THE INITIAL SITE PLAN.
IMPERVIOUS AREA SUMMARY.
EXISTING
PHASE 1
%
PHASE 1 & PHASE 2
%
IMPERVIOUS
1,76 ACRES
42.2
2.21 ACRES
529
PERVIOUS
(GRASS)
2.41 ACRES
57.8
1.96 ACRES
47.0
TOTAL
j 4.17 ACRES
1 100%
4.17 ACRES
100%
NOTE: SINCE IMPERVIOUS AREA 6 80% AND SITE IS NOT LOCATED IN AN ENTRANCE CORRODOR,
NO LANDSCAPE PLAN IS REQUIRED NTH THE INITIAL SITE PLAN.
IMPERVIOUS AREA SUMMARY.
EXISTING
_.... __ _.
PHASE 1: PHASE 1 & PHASE 2
Y
z K`
E L
ads I _3
S r Jz
.,;
MINIGOLF
9826
BLIT 1/TRAVELVIAY 35748 PROPOSED LOT (BLD, 3) E6359
OO KART TRACK
24651
Ex IMPERVIOUS TO REMAIN 41051 BLD 3 110a0ti
WALKWAYS
2209
BLD2 X000
BUMPER BOATS
4143
Ex. IMPERVIOUS TO REMAIN 318052
CONCRETE PAD
6650
BLD 1/TRAVELiAY 315748
EXISTING PARKING
34401
BLD 4
GO KART ENTRANCE
2068
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*REFER TO SHEE"T"S SW3 & S 4 DELINEATION OF IMPERVIOUS AREAS
**PHASE 2 TOTAL INCLUDES REMOVAL OF MINI GOLF COURSE,
GENERAL CONSTRUCTION NOTES FOR EROSION AND SEDIMENT CONTROL PLANS:
1. The plan approving authority must be notified one week prior to the pre -construction
conference, one week prior to the commencement of land disturbing activity, and one week prior
to the final inspection.
2. All erosion and sediment control measures will be constructed and maintained according to
minimum standards and specifications of the Virginia Erosion and Sediment Control Handbook
and Virginia Regulations VR 625-02-00 Erosion and Sediment Control Regulations.
3. All erosion and sediment control measures are to be placed prior to or as the first step in
clearing.
4. A copy of the approved erosion and sediment control plan shall be maintained on the site at
all times.
5. Prior to commencing land disturbing activities in areas other than indicated on these plans
(including, but not limited to, off-site borrow or waste areas), the contractor shall submit a
supplementary erosion control plan to the owner for review and approval by the plan approving
authority.
6. The contractor is responsible for installation of any additional erosion control measures
necessary to prevent erosion and sedimentation as determined by the plan approving authority.
7. All disturbed areas are to drain to approved sediment control measures at all times during
land disturbing activities and during site development until final stabilization is achieved,
8. During dewatering operations, water will be pumped into an approved filtering device.
9. The contractor shall inspect all erosion control measures periodically and after each runoff
producing rainfall event. Any necessary repairs or cleanup to maintain the effectiveness of the
e r a s i a n control devices shall be made immediately.
10. All fill material to be taken from an approved, designated borrow area.
11. All waste materials shall be taken to an approved waste area. Earth fill shall be inert
materials only, free of roots, stumps, wood, rubbish, and other debris.
12. Borrow or waste areas are to be reclaimed within 7 days of completion per Zoning Ordinance
section 5.1.28.
13. All inert materials shall be transported in compliance with section 13-301 of the Code of
Albemarle.
14. Borrow, fill or waste activity involving industrial -type power equipment shall be limited to the
hours of 7:00am to 9:00pm.
15. Borrow, fill or waste activity shall be conducted in a safe manner that maintains lateral
support, or order to minimize any hazard to persons, physical damage to adjacent land and
improvements, and damage to any public street because of slides, sinking, or collapse.
16. The developer shall reserve the right to install, maintain, remove or convert to permanent
stormwater management facilities where applicable all erosion control measures required by this
plan regardless of the sale of any lot, unit, building or other portion of the property.
17. Temporary stabilization shall be temporary seeding and mulching. Seeding is to be at 75
lbs/acre, and in the months of September to February to consist a 50/50 mix of Annual
Ryegrass and Cereal Winter Rye, or in March and April to consist of Annual Rye, or May through
August t0 consist of German Millet. Straw mulch is to be applied at 80lbs/100sf. Alternatives
are subject to approval 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 approval 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 commences. (Water Protection Ordinance section 17-207B)
GENERAL CONSTRUCTION NOTES:
1. Prior to any construction within any existing public right-of-way, including connection to any
existing road, a permit shall be obtained from the Virginia Department of Transportation (VDOT).
This plan as drawn may not accurately reflect the requirements of the permit. Where any
discrepancies occur the requirements of the permit shall govern.
2. All materials and construction methods shall conform to current specifications and standards
of VDOT unless otherwise noted.
3. Erosion and siltation control measures shall be provided in accordance with the approved
erosion control plan and shall be installed prior to any clearing, grading or other construction.
4. All slopes and disturbed areas are to be fertilized, seeded and mulched.
5. The maximum allowable slope is 2:1 (horizontal: vertical). Where reasonably obtainable, lesser
slopes of 3:1 or better are to be achieved.
6. Paved, rip -rap or stabilization mat lined ditch may be required when in the opinion of the
County Engineer, or designee, it is deemed necessary in order to stabilize a drainage channel,
7. All traffic control n I Is'
g with the Virginia shall conform w't a Vir inia Manual for Uniform Traffic Control
Devices.
8. Unless otherwise noted all concrete pipe shall be reinforced concrete pipe -Class III.
9. All excavation for underground pipe installation must comply with OSHA Standards for the
Construction Industry (29 CFR Part 1926).
GENERAL CONSTRUCTION NOTES FOR STREETS:
1. Construction inspection of all proposed roads within the development will be made by the
County. The contractor must notify the Department of Community Development (296-5832) 48
hours in advance of the start of construction.
2. Upon completion of fine grading and preparation of the roadbed subgrade, the contractor
shall have CBR tests performed on the subgrade soil. Three (3) copies of the test results shall
be submitted to the County. If a subgrade soil CBR of 10 or greater is not obtainable, a revised
pavement design shall be made by the design engineer and submitted with the test results for
approval.
3. Surface drainage and pipe discharge must be retained within the public right-of-way or within
easements prior to acceptance by the County. All drainage outfall easements are to be extended
to a boundary line or a natural watercourse.
4. Guardrail locations are approximate. Exact length, location and appropriate end treatments will
be field verified at the time of construction. Additional guardrail may be required at locations
not shown when, in the opinion of the County Engineer, or designee, it is deemed necessary.
When guardrail is required, it shall be installed four (4) feet offset from the edge of pavement
to the face of guardrail, and roadway shoulder widths shall be increased to
seven (7) feet.
5. Where urban cross sections are installed, all residential driveway entrances shall conform to
VDOT CG -9(A, B or C).
6. Where rural cross sections are installed, all residential driveway entrances shall conform to
VDOT standard PE -1.
7, Compliance with the minimum pavement width, shoulder width and ditch sections, as shown
on the typical pavement section detail, shall be strictly adhered to.
8. Road plan approval for subdivisions is subject to final subdivision plat validation. Should the
final plat for this project expire prior to signing and recordation, then approval of these plans
shall be null and void.
9. All signs or other regulatory devices shall conform with the Virginia Manual for Uniform Traffic
Control Devices and the Albemarle County Road Naming and Property Numbering Ordinance and
Manual.
10. Traffic control or other regulatory signs or barricades shall be installed by the developer
when, in the opinion of the County Engineer, or designee, they are deemed necessary in order to
provide safe and convenient access.
11. The speed limits to be posted on speed limit signs are 5 mph below the design speed, or as
determined by VDOT for public roads,
12. VDOT standard CD -1 or CD -2 cross -drains under to be installed under the subbase material
at all cut and fill transitions and grade sag points as shown on the road profiles.
13, A video camera inspection is required for all storm sewers and culverts that are deemed
inaccessible to VDOT or County inspections. The video inspection shall be conducted in
accordance with VDOT's Video camera inspection procedure and with a VDOT or County inspector
present.
CONTRACTOR'S COORDINATION RESPONSIBILITIES
_.... __ _.
x 126 TC
1. The contractor is required to obtain any/all permits required for construction of these plans.
PROPERTY LINE
12 Bc
TOP OF CURB ELEVATION
2. Any time work is performed off-site or within an existing easement, the contractor is to
ADJACENT PROPERTY LINE
notify the holder of said easement as to the nature of proposed work and to follow any
r l
x 126 FL
BOTTOM OF CURB ELEVATION
guidelines or standards which are associated with or referenced in the recorded easement.
VACATED PROPERTY LINE
3. The contractor is to check that all easements, letters of permission, etc, are
-----
x "
x 126 EOP
FLOW LINE ELEVATION
recorded/obtained prior to the start of any construction.
EASEMENT
8
4. Contractor to verify all site plans and profiles and details for consistency and if conflicts
o- �o
x 126
EDGE OF PAVEMENT ELEVATION
exists, contact engineer for clarification and/or direction. Interpretation determined by
BUILDING SETBACK
SPOT ELEVATION
contractor shall be done at his/her own risk.
_._ _....._
�-
<.
x 126TW
5. The contractor is to verify that the relocation of all existing utilities in conflict with proposed
BUILD TO LINE
TOP OF WALL ELEVATION
work has been completed including utility poles.
�``�`'"�������
x 126BW
6. Contractor shall comply with fencing and tree preservation signage required by Albemarle
_
ZONING LINE
-C�
BOTTOM OF WALL ELEVATION
county code.
shall7. not rely solely on electronic versions of plans, specifications, and data files
rare oobtained
TEST PIT LOCATION/BORING
that from the designers, but shall verify location of project features in
9 y P J
_
- _
LIMIT OF DISTURBANCE
®
LOCATION
accordance with the paper copies of the plans and specifications that are supplied as part of
W
s
the contract documents.
07
FLOODPLAIN LIMIT
DOM. PROJECT NO:15.006 4
BENCHMARK
8. Contractor shall comply with all wetland permit requirements, if a permit exists.
......._...
9. Contractor shall be responsible for all relocations, (unless otherwise noted on plans) including,
_._ _ RMA
BUFFER ZONE
IRON FOUND
but not limited to, all utilities, storm drainage, signs, traffic signals & poles, etc. as required.
All work shall The in accordance with governing authorities requirements and project sitework
'
RPA
RMA -RESOURCE MANAGEMENT
specifications and shall be approved by such. All cost shall be included in base bid.
UNDERDRAiN AREA
10. Contractor shall control stormwater runoff during construction to prevent adverse impacts to
off site areas, and shall be responsible to repair resulting damages, if any, at no cost to
_
_ --
RPA -RESOURCE PROTECTION
___ _..,..._....
DRAINAGE LINE
owner.
AREA
11: This project disturbs more than one acre of land and falls within the Virginia Stormwater
_.____...
Nxd...pv.. ,,.<..:<K..»�»»
ROOF DRAIN
Management Program (VSMP), General Construction Permit (GCP) program as administered by
the Virginia Department of Conservation and Recreation (DCR) under the jurisdiction of the
-_._.
cc -2
EDGE OF GRAVEL
-~- - -
SEINER LINE
EPA. Prior to the start of construction, the contractor shall file a GCP notice of intent with.
EDGE OF PAVEMENT
.
-
the DCR and prepare a stormwater prevention plan in accordance with the VSMP regulations.
CG_3
TRENCH DRAIN
12. Contractor shall coordinate with all utility companies for installation requirements and
cc -6
STANDARD 6" CURB
specifications.
- v
WATER LINE
13. Contractor shall be responsible for site security and job safety. Construction activities shall
be in accordance with OSHA standards and local requirements.
cc -7
STANDARD 4" CURB
_.""
FIRE PROTECTION LINE
14. Contractor shall dispose of demolition debris in accordance with applicable federal, state and
local regulations, ordinances and statutes.
%:''%
'
///////
COMBINATION 6" CURB &GUTTER
WATER SERVICE LINE
15 Existingutilities shall be terminated, unless otherwise noted, in conformance with local state
and individual utility company standards specifications, and details. The contractor shall
COMBINATION 4" CURB & GUTTER
GAS LINE
coordinate utility service disconnects with the utility representatives.-
'
.4 BE
__ _ .._..._ _.
_.
FIRE LANE STRIPING
OVERHEAD ELECTRIC WIRE
GENERAL CONSTRUCTION NOTES FOR STORMWATER
MANAGEMENT PLANS:
4 LD
UNDERGROUND ELECTRIC
BUILDING ENTRANCE
1. All dams and constructed fill to be within 95% of maximum dry density
DOCK
OVERHEAD TELEPHONE LINELOADING
and 2% of optimum moisture content. All fill material to be approved by
®
UNDERGROUND TELEPHONE LINE
a geotechnical engineer. A geotechnical engineer is to be present during
BOLLARD
construction of dams.
!�
CA13LE TV
2. Pipe and riser joints are to be watertight within stormwater management
DUMPSTER PAD
facilities.
3. For temporiary sediment traps or basins which are to be converted to
SIGN
DRAIN INLET
permanent stormwater management facilities; conversion is not to take
place until the site is stabilized, and permission has been obtained from
--.--.. _......._._.
_
C
DRAIN MANHOLE
the County erosion control inspector.
STEEL GUARDRAIL
ARB NOTES:
_._
-----
�
PLUG OR STUB
1, Visibility of all mechanical equipment from the
-m.
...W
WOOD GUARDRAIL
,
FLARED END SECTION
Entrance Corridor shall be eliminated,
PATH
HEADWALL
TREE LINEaco
_
-
SEWER MANHOLE
FENCE
-
SEWER CLEANOUT
STONE WALL
RETAINING WALL
Ar
WATER VALVE & BOX
ABB��EVIATIONS
-
STREAM /POND /WATER COURSE
wM
�
FIRE HYDRANT ASSEMBLY
DETENTION BASIN
WATER METER
_._....-- , -.,. _._...
- 12
SILT FENCE
WATER WELL
UTILITY
-00
°
ARV AIR RELEASE VALVE MH MANHOLE
CONTOUR
GAS VALVE
IBOA BLOW OFF ASSEMBLY PVC POLYVINYL CHLORIDE
INDEX CONTOUR
GAS METER
CO CLEANOUT RIM RIM ELEVATION
'
EM
PARKING COUNT
ELECTRIC MANHOLE
iCTV CABLE TELEVISION SAN SANITARY
IDI DROP INLET SCC STORMWATER CONVEYANCE
CROSSWALK
ELECTRIC METER
CHANNEL
DIP DUCTILE IRON PIPE
ACCESSIBLE CURB RAMP
®
LIGHT POLE
SD STORM
El
ELEC ELECTRIC
HANDICAP PARKING
TELEPHONE MANHOLE
STIR DRAINAGE STRUCTURE
FH FIRE HYDRANT
( 4:
-
VAN ACCESSIBLE HANDICAP
_
TRANSFORMER PA D
TSV TAPPING SLEEVE & VALVE
FM FORCE MAIN
01
"
PARKING
UTILITY POLE
UP UTILITY POLEi
..w �......F
F&C FRAME AND COVER
y
v
CONCRETE PAVEMENT /SIDEWALK JFK HI -
-.
GUY POLE
WL WATER LINE
_1
,fih
F&G FRAME AND GRATE
W J
RIPRAP
WM WATER METER
MATCHLINE
GT GREASE TRAP
WV WATER VALVE
z>>�'
NEW ASPHALT
GV GATE VALVE
6"V 6" VALVE
GRASS
NOTES:
HDPE HIGH DENSITY
� „1
1,
2.
THE SIZE OF THE SYMBOLS MAY VARY FROM THOSE SHOWN.
ALL ABBREVIATIONS AND
POLYETHYLENE
=, i
-„
EC -2 BLANKET MATTING
SYMBOLS SHOWN MAY NOT BE USED.
INV INVERT
EC -3 TYPE A
EC -3 TYPE B
��GENERAL
WETLAND
ARAN ABANDON(ED) CENTER LINE EX
EXISTING
MIN MINIMUM
REM REMOVE
SWLLSOLID WHITE LANE
LINE
ADJ ADJUST CL CHAIN LINK EXIST
EXISTING
MON MONUMENT
CONCRETE REQDREQUIRED
TBA TO BE ABANDONED
AHD AHEAD CMP CORRUGATED METAL PIPE FDN
FOUNDATION
NIC NOT IN
CONTRACT RET RETAIN
TBR TO BE REMOVED
APRX APPROXIMATE CONC CONCRETE FFE
FINISHED FLOOR ELEVATION
NTS NOT TO
SCALE RT RIGHT
TC TOP OF CURB
BC BACK OF CURB CY CUBIC YARDS GTD
GRADE TO DRAIN
OC ON CENTER R/W RIGHT OF WAY
TS TOP OF SLOPE
BFE BASEMENT FLOOR ELEVATION C/C CENTER TO CENTER IF
IRON FOUND
OH OVERHEAD R&D REMOVE AND
DiSPOSE
TYP TYPICAL
BIT BITUMINOUS C&G CURB AND GUTTER IS
IRON SET
PE POLYETHYLENE R&R REMOVE & RESET
UG UNDERGROUND
BK BACK DIA DIAMETER LA
LANDSCAPE AREA
PERFPERFORATED SD SIGHT DISTANCE
VESCH VA. E&S CONTROL HANDBOOK
BM BENCHMARK EL ELEVATION LOD
LIMIT OF DISTURBANCE
PROP PROPOSED SQ SQUARE
YDS YARDS
BS BOTTOM OF SLOPE ELEV ELEVATION LF
LINEAR FEET
PRVDPROVIDED STA STATION
CB CATCH BASiN ES END SECTION LT
LEFT
PWW PAVED WATER WAY SW SIDEWALK
CG12 ACCESSIBLE CURB RAMP EW END WALL MAX
MAXIMUM
RCP REINFORCED CONCRETE PIPE SWELSOLiD WHITE
EDGE LINE
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DATE:: 2/19/16
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DOM. PROJECT NO:15.006 4
s
DATE:: 2/19/16
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TIME OF CONCENTRATION
OVERLAND FLOW = 13.5 min
SHALLOW FLOW = 2 min
CHANNEL FLOW = 5 min
TOTAL Tc = 20.5 min
--__OVEKAN-D-FLOW,.,
. .. . ...... . . ..... 13.5
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DATE: 2/19/16
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INS
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SHEET NO: 4 of 11
DATE: 2/19/16
ADEQUATE OUTFALL COMPUTATIONS
PEAK 2 -YR FLOW TO A -A
Hydrograph Report
Hydr tQvv Nydrpgraphs Extmionfor
4gGAIXYCMI 3DV2014 M AUtoda* 1nL;.v40.3,
WaOfi sW.y 021,10 72019
Hyd. No, 10
;Nydraflpva ExRross E;denSidn fotAu[ixiosk�fvnaCF7Db Cih190itidy
AUtoGask, lac.
Postdeveloped Adequate Channel.
N?etlgesday. FatY_1q 2018
CROSS SECTION A -A
Hydrograph type
= SUS Runoff
Peak discharge
= 5,9.01 cis
Storm frequency
= 2 yrs
Time to peak
= 12,13 hrs
Time interval=
2 min
Hyd. volume
= 192;01,9 cuft
Drainage area
= 49.390 ac
curve number
= 68:.8
Basin Slope
= 0-0%
Hydraullo length
= 0 ft
Tc method
= User
Time of cone. (Tc)
= 20.50 min
Total precip.
= 3.68 in
Distribution
Type 11
Storm duration
= 24 fits
Shape factor
=484
0 (CN)
60.Q0
50,00
4D. W
3Q.00
20.00
1 D:O
0.00 0 2 4 6 8 10 12 X14 16 18 2(P 22 24 26.
Hyd No. 10 Time,(hrs)
Pos(developedAdequate Channel
Hyd. No. 10 - 2 Year
SECTION A -A CROSS SECTION
Channel Report
OFFSITE
HOUSES = 115,999 SF = 2.66 AC
;Nydraflpva ExRross E;denSidn fotAu[ixiosk�fvnaCF7Db Cih190itidy
AUtoGask, lac.
6.26 AC
N?etlgesday. FatY_1q 2018
CROSS SECTION A -A
OFFSITE
TOTAL IMPERVIOUS = 489,300 SF =
11.23 AC
ltser-d�sfined
PREDEVELOPED IMPERVIOUS AREA =
Highlighted
ONSITE
POSTDEVELOPED IMPERVIOUS AREA =
Invert Elev'0) = 460'.()0
OFFSITE
Depth (ft)
= 1.76.
CN = 55
Slope (Q5,) = 2.60
0 (cfs)
PRE/POST DEVELOPED FOREST/OPEN
SPACE AREA = 0.84 AC
N -Value = 0.050
MANAGED TURF = 18.55 AC
Area (sgft)-
CN = 61 ONSITE
PREDEVELOPED MANAGED TURF = 1.40
AC
ONSITE
Velocity (ftis)
vualculatlotis
wetted Perim(ft)
= 10.31
compute ky: Known Q
Qrit.Uepth, Yb (ft)
= 1,56:
Known 0 (ofs) - 51.01
Top> dth.(ft)
■
EGL (ft)
(Sta, EI, n)-(Sta, EF n)i,
(0.90,.464,00):0.00, 484 g4.0.4?Vh(6:04, A60',g0; 0:090}{4!).00.'461AO,A.059}(74.00,
488.p0. 0.OS0rj'16:b9, 4fi3.U0; !1.77661
Etev (ft)
Section
i
Depth (ft)
465 00
5.00
t
■
Y"
464.00
.,, ..:,�. ..,.,,,,...
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4 Q
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15.006t"11
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462 Qt)
46100
M . ..............._............
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:..._....
. .......
100,
460L0
_ -
0.00
..459,00
-1..00
-2 0 2 4
6 .8;
10-. 12 14
45 18.
Sta {tl)
< 5 fps OK
NOTE: SECTION A -A GEOMETRY BASED ON FIELD OBSERVATION AND MEASUREMENTS OF THE CHANNEL,
TOTAL DRAINAGE AREA = 49.39 AC
OFFSITE
HOUSES = 115,999 SF = 2.66 AC
OFFSITE
DRIVEWAY/PARKING = 272,837 SF =
6.26 AC
CN = 98 OFFSITE
ROADS = 100,464 SF = 2.31 AC
OFFSITE
TOTAL IMPERVIOUS = 489,300 SF =
11.23 AC
ONSITE
PREDEVELOPED IMPERVIOUS AREA =
1.93 AC
ONSITE
POSTDEVELOPED IMPERVIOUS AREA =
1.76 AC
OFFSITE
FOREST/OPEN SPACE = 876,427 SF
= 15.44 AC
CN = 55
i
ONSITE
PRE/POST DEVELOPED FOREST/OPEN
SPACE AREA = 0.84 AC
OFFSITE
MANAGED TURF = 18.55 AC
CN = 61 ONSITE
PREDEVELOPED MANAGED TURF = 1.40
AC
ONSITE
POSTDEVELOPED MANAGED TURF = 1.57 AC
PREDEVELOPED CN
13.16 AC * 98 1289.68
19.95 AC*61 1216.95
16.28 AC * 55 895.4
3162.79/49.39 = 68.88 CN
POSTDEVELOPED CN
12.99 AC * 98 1273.02
20.12 AC * 61 1227.32
16.28 AC * 55 895.4
3395.74/49.39 = 68.75 CN
CN VALUES TAKEN FROM THE VIRGINIA RUNOFF REDUCTION METHOD FOR B SOILS.
POINT OF
ANALYSIS
•
SOIL BOUNDARY (TYP)
40
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/ ADJACENT TO THE DOWNSTREAM KEGLER`S BUILDING
TO MEET THE WATER QUANTITY REQUIREMENTS FOR
THE SITE SINCE THE OVERALL IMPERVIOUS AREA
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YVATER QUALITY REQUIREMENTS FOR PHASE 1' THE
OWNER IS PROPOSING TO PURCHASE PHOSPHOROUS
CREDITS, PLEASE ALSO NOT THAT AN ADEQUATE
CHANNEL OUTFALL ANALYSIS TO THE KEGLER'3
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/DOM. PROJECT NO:15.
/ ---------INDEX TITLE:
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Post-ReDevelopment Project Land Cover Information Total
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Pre-ReDevelopment Land Cover acres
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1.,1111111..........1.....11-11111-1�1
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PHOSPHOROUS CTION REQUIRED L LOAD REDU
.. _ ,_1__
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USLAD REDUCTION ACHIEVED LB/YR11 I
---"
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ADJUSTED POST-DEVEOPMENT PHOSPHOROUS LOAD
---- -- -1--1__",-__ _-----1
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REMAINING PHOS PHOROUS LOAD REDUCTION LB/YRNEEDED
...-
11-
11,1Ill""-"--,----11-111----- 11-111
lI.-,1
111 1-1 ---- __�
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,CURVE NUMBER CALCULATION
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CALCULATION -
$
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2 AREA*CN
AREAS ATOTAL AREA 0.46�ACLUE
ON VA(,-"---""---�
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2 � TOTAL AREA
VALUEQ
FT 1111 I
.-IFT
.... -1
111
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;
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MANAGER TUR14,666 ,61 0.34 20.54 I
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;MANAGED TURF II
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2,362 61_..._. 0.05 3.31 I
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=
EIGHTED CN VALUE 7 0.7i � 1I
11______,_ 1- "____ ., 1,1 -I_ -I_ 1-1--,-, ,,.11.11...:,<: ,_.,..,,..,,,1:,:. ,-,""11"I'.-:l,,.",""
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CALCULATION
NUMBER AL
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FT2 1 CN VALUE, AREAS(AQ :AREA*CN TOTALAREA=0.37AC
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AMPERVIOUS 2,145 98 0.05 4.83
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MANAGEDTURF 3,932 1 61 0.32 19.51
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EIGHTED CN VALUE 65.91
0.07 o AC
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11-1---11.11 1-1.1 .
MANAGE DTURF
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I I1111...-1.1-11111
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1
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1
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CN VALUE I AREAS (AC) ' AREA CN
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- 1.1-1 I I I..., ... 111-1-1 I - I I ..
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WEIGHTED CN VALUE = � 82..4 !
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9-8I,
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TOTAL TOTALAREA=0.43 ; AC I
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ii
500
5 00
0
EXISiiN� 6RAQE
IF
1.54
0.15
91
8.130
Curb
0.050
2,00
0.083
0-.021
0.20
3.53
PROPOSED
A13E-
495
495
[
6,03
0.90
i
490
490
as
q 1
J
_
1 S
N
1
485
485
DPE-
480
480
0
I,
Q
d�
t\
�
d-
N
00
N
d-
475
475
i
! C
.___..._..._._.....___._._.._.
z
z
I i
_____,..._
it
-470
470
75 10+00 10+50
11+00
11-F50
12+00
12+50
13+00
13
465
465
460
460
455
455
0
4500
55
STORM SEWER PROFILE (ST -4A -> ST -1)
W10 Horiz. Scale: 1"=30"
z.
Vert. Scale: 1"=10"
OTWAT)AT 0LITAITT�17 TIT -)aPTT TP iOrP 0 11 om 'DI - N
Horiz. Scale: 1 "'=30"
It
Vert. Scale: 1"=10"
INLET 3CSWI W
J' �STRU(CTURE 4A AND 3A INLET COMPUTATIONS
INLET
4C
t. ..._..._. _. Stree _ ..
Stop • _
_.._ _.
-510
Sign - --
!
I
! I
! i _
t � Ait C"ATERLI
R
i -
�I [
!
!
!
I�itENT
!
!
t
DA -4A 4A 0.37 Ac
O O
O \
1
SD
CN 65.9
45'
TOW B
ND ,
}
s` 1
ZONE FH
Tc 5 min
a
TOW ,
I t
I t /
E
Dc
I �
I
Z E
l
I I
1 0
}
}
I I
I
�1
1
I
-1-
'�, P
}
1
,
LP- t L _
,
13 \
P
VA IANCE OF 0 _.
t !
_
;UN ISTURBED BUFFER
REQ IREMENT NEEDED,
'S
INT S LOCAT 1
\ 10N 8
t
1
O � �
2
�0
ZONE i
I
f
}
1
\ f
I
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t I
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a
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H 2 !` .. i;! `•.r `�
s
9 I I I i I
��
P
t
Q
I I I ILL
I
s � �
r
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HCP SIGN _ _ ND _._.
co _
, r
I
o- -
ThIP 45-1 92G
i _ t
_. 5
STORY
- - s
i
I
-EM -.
M.I�.203
�-
STUCCO
I
PROPOSED
I
I
Acura
BUILDING
.v
w
` 2S
E EWER
HVx2
EASEMENT •i5�H 7-x -xmmm 19
E
WM DA -3B _ 0.43 Ac
� LP CN - 82.4 � (.
'Tc = 5 min -
r
,
CN
�I .---•-�--�..�.., � Tc - 5 min °' -
_DA_ -3
C - "0 07 Ac DA -4C = x,46 Ac'i RO�r'�3S�D iN- UP ._ ----
CN = 6 GN - 70.7-
� Tc = 5 m in
i _ ----- TOP=485.5 4 +
_ 4g0
..86st 8
BLL 1 $6� '884
DECK~\
.f
12,160 SF KNOXBOX REQUIRED.
_F'�O ------ � PLEASE CONTACT THE OFFICE 12' ��
��;'
DA -1C,= 0.66 Ac ALBEMARLE COUNTY 34'X40' '
98 FIRE MARSHAL OFFICE FF.{� 1 .0
85�
Tc - 5 m
40" NIGH LOADING DOCK NIGH LOADING DOCK
t
/
1 d
ov oo°TEP , �•, `� } " �-
f
• �
�, � :':--�7-� 8 CpN • ETE ,, 8AD1NG. RLkTFORM '• .v ' ' •d - +� 40
_ -'/ • �- ' 6 CONC. - .
.:.490 tea• • - • '!93' 84.E -- -
(� 3z 1 gv1AX: �HT.',-O . WALK SIDEWALK-'\.
f8'x15.5'oCGWREi`E . �;, ' o• � .� "- -
.. _... •83.+z s��. d . ` I
� }, � -� ! ,. •'. MDING -ARES.
r ` L6 ra A `SP HEA �
3L
: �
,• __ ..._ -- CO
Nip --1 � �... �.�,�_•7
-
� R -;,l 1`10--Cz
c
tO-
�
o
ss
v m cry
a®.
c1�
o
o
N R
s
-v
iii FOR LOCATION.CD
It`
ii
ii
0
EXISiiN� 6RAQE
f 'I
1.54
0.15
91
8.130
Curb
0.050
2,00
0.083
0-.021
0.20
3.53
PROPOSED
A13E-
[
6,03
0.90
i
as
q 1
J
_
1 S
N
1
c�
I,
Q
d�
t\
�
d-
N
00
N
d-
i
! C
.___..._..._._.....___._._.._.
z
z
I i
_____,..._
it
75 10+00 10+50
11+00
11-F50
12+00
12+50
13+00
13
STORM SEWER PROFILE (ST -4A -> ST -1)
W10 Horiz. Scale: 1"=30"
z.
Vert. Scale: 1"=10"
OTWAT)AT 0LITAITT�17 TIT -)aPTT TP iOrP 0 11 om 'DI - N
Horiz. Scale: 1 "'=30"
It
Vert. Scale: 1"=10"
INLET 3CSWI W
J' �STRU(CTURE 4A AND 3A INLET COMPUTATIONS
INLET
4C
t. ..._..._. _. Stree _ ..
Stop • _
_.._ _.
-510
Sign - --
!
I
! I
! i _
t � Ait C"ATERLI
R
i -
�I [
!
!
!
I�itENT
!
!
t
DA -4A 4A 0.37 Ac
O O
O \
1
SD
CN 65.9
45'
TOW B
ND ,
}
s` 1
ZONE FH
Tc 5 min
a
TOW ,
I t
I t /
E
Dc
I �
I
Z E
l
I I
1 0
}
}
I I
I
�1
1
I
-1-
'�, P
}
1
,
LP- t L _
,
13 \
P
VA IANCE OF 0 _.
t !
_
;UN ISTURBED BUFFER
REQ IREMENT NEEDED,
'S
INT S LOCAT 1
\ 10N 8
t
1
O � �
2
�0
ZONE i
I
f
}
1
\ f
I
IO a I t
t I
CSOJr-
a
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H 2 !` .. i;! `•.r `�
s
9 I I I i I
��
P
t
Q
I I I ILL
I
s � �
r
B-E
HCP SIGN _ _ ND _._.
co _
, r
I
o- -
ThIP 45-1 92G
i _ t
_. 5
STORY
- - s
i
I
-EM -.
M.I�.203
�-
STUCCO
I
PROPOSED
I
I
Acura
BUILDING
.v
w
` 2S
E EWER
HVx2
EASEMENT •i5�H 7-x -xmmm 19
E
WM DA -3B _ 0.43 Ac
� LP CN - 82.4 � (.
'Tc = 5 min -
r
,
CN
�I .---•-�--�..�.., � Tc - 5 min °' -
_DA_ -3
C - "0 07 Ac DA -4C = x,46 Ac'i RO�r'�3S�D iN- UP ._ ----
CN = 6 GN - 70.7-
� Tc = 5 m in
i _ ----- TOP=485.5 4 +
_ 4g0
..86st 8
BLL 1 $6� '884
DECK~\
.f
12,160 SF KNOXBOX REQUIRED.
_F'�O ------ � PLEASE CONTACT THE OFFICE 12' ��
��;'
DA -1C,= 0.66 Ac ALBEMARLE COUNTY 34'X40' '
98 FIRE MARSHAL OFFICE FF.{� 1 .0
85�
Tc - 5 m
40" NIGH LOADING DOCK NIGH LOADING DOCK
t
/
1 d
ov oo°TEP , �•, `� } " �-
f
• �
�, � :':--�7-� 8 CpN • ETE ,, 8AD1NG. RLkTFORM '• .v ' ' •d - +� 40
_ -'/ • �- ' 6 CONC. - .
.:.490 tea• • - • '!93' 84.E -- -
(� 3z 1 gv1AX: �HT.',-O . WALK SIDEWALK-'\.
f8'x15.5'oCGWREi`E . �;, ' o• � .� "- -
.. _... •83.+z s��. d . ` I
� }, � -� ! ,. •'. MDING -ARES.
r ` L6 ra A `SP HEA �
3L
: �
,• __ ..._ -- CO
Nip --1 � �... �.�,�_•7
-
� R -;,l 1`10--Cz
c
tO-
o
ss
v m cry
a®.
o
o
N R
s
-v
iii FOR LOCATION.CD
18' 2
1 4-Sanitar_..
Seer "Lo
b
STORM SEWER DRAINAGE AREA MAP
SEE SHT SW8 FOR CN CALCULATIONS
,!01
Ljr
CG
U77f
O
i
C >>�
10'X20)X1• „ 'ICK, � � ___--------
:E
30 0 30 60 90
SCALE: 1"=30'
%rye inlet ®nStm arng Known Inlet Tc ! Flow Invert Invert Line Line. Litre Gapac Vel ripe
Noa ID Inlet f® ;Area Q Time syr Rate Tan I.ip Length Slope Size Full Dn. Travel
(ac) (cfs) (min) (min) (i,�nlhr) (efs) (ft) (ft) (ft) (°Xo} (itl) {c#s} (ftls) {1'i%in}
1 1C Outfall 0.66 0.00 5.0 7.5 6,57 15.55 474:12 476:50 41.932 5.68 18 27.10 15,86 0;08
2 313 1 -043 0.00 5.0 6.1 6:93 976 476.70 480.603 135.366 2:81 18 1.9.06 10.86 0:41
3 3 2 0.00 1:61 0.0 5.7 7.05 7:25 480.70 483,41 103.908- 2:61 18 18,37 9.79 0:42
4 4 3 0.00 3.99 0.0 5.0 7:22 5:68 433.61 48832 121.914 186 18 22.35 10,56 0.63
a 4A 4 0.37 0,00 5.0 5.0 7.24 .1.69 488.42 46872 3.873 7..75 15 1947 9.74 0.05
6 2C 1 0.00 0.00 0:0 5.6 6:79 2.17 476.70 477:67 96.531 1.00 15 7.01 5.07 0.89
7 3C 0.07 0.00 5,0 5.9 6,98 2,23 477.77 480;06 82..115 2..79 15 11.68 7.34 0.74
8 4C 7 01.46 0,00 5:0 5.0 7,24 2;03 480.28 48'1:54• 89.475 1..52 15 8.62,
STORK DRAIN COMPUTATIONS
Line Inlet 17rn,g Inlet i Runoff Incr Q Q Q Inlet !Inlet: Juno- Gutter Gutter Gross 'Cross Gutter Gutter
No. tl3 Area. Time Inlet Coeff Q Garry Capt i3yp Efif Len Type Slope Width Sl, Sw Sl, Sx Depth Spread
(ac) (min) (in/hr) (G) (efs) cfsj {cfS} {cfis) (%) {fit) (fitlft) (fit) {f#Ifit} (fit1ft) {ft} (ft)
'[
IC 0.66 .0 7.24 0.90 4.30 0.06. 4.316 0.0(3 100 8,00 Curb Sag 2.00 0.083 0.040 0..30 5.32
2 3E3 0.43 5.0 7.24 0.85 2.35 0.15 2.714 0.06 98 8.00 Curb 0.010 2;00 0.083 0.043 0,31 5.40
5 4A 0.37 5.0 7:24 0>65 1.69 O.00
c
tO-
o
ss
v m cry
a®.
o
o
N R
s
-v
f 'I
1.54
0.15
91
8.130
Curb
0.050
2,00
0.083
0-.021
0.20
3.53
[
6,03
0.90
STORK DRAIN COMPUTATIONS
Line Inlet 17rn,g Inlet i Runoff Incr Q Q Q Inlet !Inlet: Juno- Gutter Gutter Gross 'Cross Gutter Gutter
No. tl3 Area. Time Inlet Coeff Q Garry Capt i3yp Efif Len Type Slope Width Sl, Sw Sl, Sx Depth Spread
(ac) (min) (in/hr) (G) (efs) cfsj {cfS} {cfis) (%) {fit) (fitlft) (fit) {f#Ifit} (fit1ft) {ft} (ft)
'[
IC 0.66 .0 7.24 0.90 4.30 0.06. 4.316 0.0(3 100 8,00 Curb Sag 2.00 0.083 0.040 0..30 5.32
2 3E3 0.43 5.0 7.24 0.85 2.35 0.15 2.714 0.06 98 8.00 Curb 0.010 2;00 0.083 0.043 0,31 5.40
5 4A 0.37 5.0 7:24 0>65 1.69 O.00
/,STORM INLET COMPUTATIONSUj _
L � _ U
ANN-
aC O<
c
tO-
o
ss
v m cry
a®.
o
o
N R
s
-v
f 'I
1.54
0.15
91
8.130
Curb
0.050
2,00
0.083
0-.021
0.20
3.53
/,STORM INLET COMPUTATIONSUj _
L � _ U
ANN-
aC O<
•
■
3
t:
i
F
r
• SII � �,
INDEX TITLE:
I i
W
c
tO-
o
ss
v m cry
a®.
o
o
N R
s
-v
•
■
3
t:
i
F
r
• SII � �,
INDEX TITLE:
I i
W
f 'I
[
i
as
_
f 'I
TEMPORARY SEDIMENT TRAP CALCULATIONS
No.
A
B
C
H
Z
WEIR
LENGTH
DRAINAGE
AREA
WET
VOL.
D1
WET
VOL.
DRY
VOL.
D2
DRY
VOL.
m m w
� - m
1
(f t)
~C
PIPE OUTLET TO &~
=
Stone Si
/0I?H0DT WIRE SUPPORT) 4W
-DEFINED �~
u� �
2, EXCAVATE A 4^ x 4" TRENCH
CHANNEL �� Q�
1
Class �Lj � |
° .
1. SET THE STAKESUPSLOPE ALONG THE LINE OF
��� ~�~�-
C\j �
� 0
� STAKES. �
18"
24
4.5
11.5
1
0.68
45,56
4.0
65.9 t45.56
1.5
56.1
1'
| ORgNAL� `
GROUND
ELEVATION
EL C
07
- -' DRY VOLUME "
N
d 12
Stone 3" 3W 2A Asphalt
CLOTH"ECTIO
RIGINAL EL B Construction
Access 2% Slope M11- 2% S�.qp FILTER
Pavement FILTER CLOTH
GROUND :�/ /n o-��
ELEVATION _~ ~_ .
FILTER CLOTH RECOMMENDED FORes
ENTIRE PERIMETER
"COARSE ^-w������
CLASS | / ---'-'- '~~, '~'~'-
\ ^ '
EL A AGGREGATE R|pRAP �-8" 21A Aggregate Bou« `-Filter Cloth
Existing -/ OUTLET STRUCTURE: ST -3
Grade SECTION B -B J. STAPLE FILTER MATERIAL
4� BACKFILL AND COMPACT
CROSS SECTIONOF OUTLET TO STAKES AND EXTEND THE EXCAVATED SOIL. A A
Existing IT INTO THE TRENCH.
Pavement B
*NOTE: SEDIMENT TRAP SHALL "
. __�-_�
1 1C RS
NOT BE REMOVED BEFORE COUNTY ` 0
� �No. 33028
INSPECTOR HAS DEEMED 2'* Min~�~�
STABILIZED. �
PIPE
CLASS | 0PRAP Stono /' | ----Ponibw: Drainage *Must extend full ----
|
OUTLET
L-001 Hwidth of ingress
oemenConstruction TO FLA
T
Trapping Device and egress operation
���\��� AREAWEIR LENGTH ER3|ON
WITH NO
DIKE PLAN VIEW/ �--�' °dy�' / �--�' `^� DEFINED
CHANNEL
12' Min Positive Drainage
(
To Sediment
|!
2% Slope Trapping Device
SHEET FLOW INSTALLATION 1
(PERSPECTIVE VIEW)
d=12'
\-Filter Cloth
^ A| | .
FILTER CLOTH--� `--KEY |N 6"-9";
SECTION �_� _
RECOMMENDED FOR
SECTION A -A P4 r4
" ENTIRE PERIMETER
NOTE: /\ minimum water tap of l diameter must be installed
AGGREGA with o nninirnurn 1^ boUcock shutoff vo|ws supplying o wash hose d�= 6"
FILTER LTER __/' with u diameter of 1.5^ for adequate constant pressure. Wash~
water must be carried away from the paved construction D = = = 121' TnUwoter Depth *Maximum Tui|wotor Condition
`�-----
entrance to on approved settling or�o to remove sediment. All POINT A SHOULD BE HIGHER THAN POINT B. /�»o {�49"(U�U5/)'-
4EXCAV&TED Use p|oto 3.18
sediment aho|| be prevented from entering storm drains, ditches,
AREA or watercourses.DRA|NAGEWAY INSTALLATION
�l]���� (PERSPECTIVE �[��1 (FRONT ELEVATION) Lo = 24' use JO' to existing TOP OF BANK, ] x Do = 4�5' VY = 11.1 use 11.5
FENCE(SF)**COARSE AGGREGATE SHALL BE
VDOT #J. #357' OR #5.
Not to Scal e Not To Scale co
\TEMPORARY SEDlMENT TRAP DETAIL z���
", NOT TO
�
C~�
cu�
om--
55
-___
|
�
m m w
� - m
(cfs)
(f t)
~C
PIPE OUTLET TO &~
=
Stone Si
/0I?H0DT WIRE SUPPORT) 4W
-DEFINED �~
u� �
2, EXCAVATE A 4^ x 4" TRENCH
CHANNEL �� Q�
� n\"\ ~
Class �Lj � |
° .
1. SET THE STAKESUPSLOPE ALONG THE LINE OF
��� ~�~�-
C\j �
� 0
� STAKES. �
18"
1'
| ORgNAL� `
GROUND
ELEVATION
EL C
07
- -' DRY VOLUME "
N
d 12
Stone 3" 3W 2A Asphalt
CLOTH"ECTIO
RIGINAL EL B Construction
Access 2% Slope M11- 2% S�.qp FILTER
Pavement FILTER CLOTH
GROUND :�/ /n o-��
ELEVATION _~ ~_ .
FILTER CLOTH RECOMMENDED FORes
ENTIRE PERIMETER
"COARSE ^-w������
CLASS | / ---'-'- '~~, '~'~'-
\ ^ '
EL A AGGREGATE R|pRAP �-8" 21A Aggregate Bou« `-Filter Cloth
Existing -/ OUTLET STRUCTURE: ST -3
Grade SECTION B -B J. STAPLE FILTER MATERIAL
4� BACKFILL AND COMPACT
CROSS SECTIONOF OUTLET TO STAKES AND EXTEND THE EXCAVATED SOIL. A A
Existing IT INTO THE TRENCH.
Pavement B
*NOTE: SEDIMENT TRAP SHALL "
. __�-_�
1 1C RS
NOT BE REMOVED BEFORE COUNTY ` 0
� �No. 33028
INSPECTOR HAS DEEMED 2'* Min~�~�
STABILIZED. �
PIPE
CLASS | 0PRAP Stono /' | ----Ponibw: Drainage *Must extend full ----
|
OUTLET
L-001 Hwidth of ingress
oemenConstruction TO FLA
T
Trapping Device and egress operation
���\��� AREAWEIR LENGTH ER3|ON
WITH NO
DIKE PLAN VIEW/ �--�' °dy�' / �--�' `^� DEFINED
CHANNEL
12' Min Positive Drainage
(
To Sediment
|!
2% Slope Trapping Device
SHEET FLOW INSTALLATION 1
(PERSPECTIVE VIEW)
d=12'
\-Filter Cloth
^ A| | .
FILTER CLOTH--� `--KEY |N 6"-9";
SECTION �_� _
RECOMMENDED FOR
SECTION A -A P4 r4
" ENTIRE PERIMETER
NOTE: /\ minimum water tap of l diameter must be installed
AGGREGA with o nninirnurn 1^ boUcock shutoff vo|ws supplying o wash hose d�= 6"
FILTER LTER __/' with u diameter of 1.5^ for adequate constant pressure. Wash~
water must be carried away from the paved construction D = = = 121' TnUwoter Depth *Maximum Tui|wotor Condition
`�-----
entrance to on approved settling or�o to remove sediment. All POINT A SHOULD BE HIGHER THAN POINT B. /�»o {�49"(U�U5/)'-
4EXCAV&TED Use p|oto 3.18
sediment aho|| be prevented from entering storm drains, ditches,
AREA or watercourses.DRA|NAGEWAY INSTALLATION
�l]���� (PERSPECTIVE �[��1 (FRONT ELEVATION) Lo = 24' use JO' to existing TOP OF BANK, ] x Do = 4�5' VY = 11.1 use 11.5
FENCE(SF)**COARSE AGGREGATE SHALL BE
VDOT #J. #357' OR #5.
Not to Scal e Not To Scale co
\TEMPORARY SEDlMENT TRAP DETAIL z���
", NOT TO
55
-___
Structure
Pipe (in)
(cfs)
(f t)
Apron Width (ft)Apron
Width (ft)
Stone Si
oo
Storm 1
Class �Lj � |
° .
|
.
|
.
|
.
.
| 8 0
° L� �
18"
15.55
24
4.5
11.5
CIO
soon
WIRE SCREEN CURB INLET now @ 1 STAPLE WIRE FENCING TO THE POSTS.
ONE
�-*GRAVEL FILTER \--CONCRETE BLOC
Compacted Soil
RUNOFF WATER - OVERFLOW FILTERED WATER
WITH SEDIMENT 2. BACKFILL AND COMPACT THE Pei
EXCAVATED SOIL.
PERSPECTIVE VIEW
SEDIMENT 2" x 4"
__�TEMPORARY DIVERSION DIKE (DDI
WOOD STUD -CURB INLET (6
SPECIFIC APPLICATION ALE
NOT TO S
Jill
11�w_ W1
THIS METHOD OF INLET PROTECTION IS APPLICABLE
AT CURB INLETS WHERE AN OVERFLOW CAPABILITY IS NECESSARY
TO PREVENT EXCESSIVE PONDING IN FRONT OF THE STRUCTURE.
FLOW
*GRAVEL SHALL BE VDOT #3, #357, OR #5 COARSE.AGGREGATE.
EXTENSION OF FABRIC AND WIRE INTO THE TRENCH.
CURB INLET PROTECTION (IN
WIRE
NOT TO SCALE FABRIC FILTER FABRIC
LU
PO ETHYLENE
FABRIC LINE POST
POSTS WITH
6' MAX CONCRETE GROUNDUNE
CONVENTIONAL BRACING FOOTING
5' MIN, METAL (T) OR DOM. PROJECT NO:15.0065
(U) POSTS
PERSPECTIVE VIEW PERSPECTIVE VIEW INDEX TITLE:
SWA t
PLASTIC FENCE METAL FENCE 8 SUPER SILT F , E " N CE DETAIL (SSF) t
7'� SAFE-TY..__ FB._.N_Q_.E QE TAIL (SF) SW1 I NOT TO SCALE'
DATE: 2/12/16