HomeMy WebLinkAboutWPO201700023 Plan - VSMP Minor Amendment 2018-03-26ALBEMARLE COUNTY, VIRGINIA
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WPO/VSMP, WP0201700023
EROSION AND SEDIMENT CONTROL/STORMWATER MANAGEMENT PLANS
ALBEMARLE COUNTY ENGINEERING GENERAL CONSTRUCTION NOTES FOR E&SC PLANS:
1. THE PLAN APPROVING AUTHORITY MUST BE NOTIFIED ONE WEEK PRIOR TO THE PRE -CONSTRUCTION CONFERENCE, ONE WEEK PRIOR TO THE COMMENCEMENT OF LAND DISTURBING ACTIVITY, AND ONE WEEK PRIOR TO THE FINAL INSPECTION.
2. ALL EROSION AND SEDIMENT CONTROL MEASURES WILL BE CONSTRUCTED AND MAINTAINED ACCORDING TO MINIMUM STANDARDS AND SPECIFICATIONS OF THE VIRGINIA EROSION AND SEDIMENT CONTROL HANDBOOK AND VIRGINIA REGULATIONS VR 625-02-00 EROSION AND SEDIMENT CONTROL REGULATIONS.
3. ALL EROSION AND SEDIMENT CONTROL MEASURES ARE TO BE PLACED PRIOR TO OR AS THE FIRST STEP IN CLEARING.
4. A COPY OF THE APPROVED EROSION AND SEDIMENT CONTROL PLAN SHALL BE MAINTAINED ON THE SITE AT ALL TIMES.
5. PRIOR TO COMMENCING LAND DISTURBING ACTIVITIES IN AREAS OTHER THAN INDICATED ON THESE PLANS (INCLUDING, BUT NOT LIMITED TO, OFF-SITE BORROW OR WASTE AREAS), THE CONTRACTOR SHALL SUBMIT A SUPPLEMENTARY EROSION CONTROL PLAN TO THE OWNER FOR REVIEW AND APPROVAL BY THE PLAN APPROVING
AUTHORITY.
6. THE CONTRACTOR IS RESPONSIBLE FOR INSTALLATION OF ANY ADDITIONAL EROSION CONTROL MEASURES NECESSARY TO PREVENT EROSION AND SEDIMENTATION AS DETERMINED BY THE PLAN APPROVING AUTHORITY.
7. ALL DISTURBED AREAS ARE TO DRAIN TO APPROVED SEDIMENT CONTROL MEASURES AT ALL TIMES DURING LAND DISTURBING ACTIVITIES AND DURING SITE DEVELOPMENT UNTIL FINAL STABILIZATION IS ACHIEVED.
8. DURING DEWATERING OPERATIONS, WATER WILL BE PUMPED INTO AN APPROVED FILTERING DEVICE.
9. THE CONTRACTOR SHALL INSPECT ALL EROSION CONTROL MEASURES PERIODICALLY AND AFTER EACH RUNOFF -PRODUCING RAINFALL EVENT. ANY NECESSARY REPAIRS OR CLEANUP TO MAINTAIN THE EFFECTIVENESS OF THE EROSION CONTROL DEVICES SHALL BE MADE IMMEDIATELY.
10. ALL FILL MATERIAL TO BE TAKEN FROM AN APPROVED, DESIGNATED BORROW AREA.
11. ALL WASTE MATERIALS SHALL BE TAKEN TO AN APPROVED WASTE AREA. EARTH FILL SHALL BE INERT MATERIALS ONLY, FREE OF ROOTS, STUMPS, WOOD, RUBBISH, AND OTHER DEBRIS.
12. BORROW OR WASTE AREAS ARE TO BE RECLAIMED WITHIN 7 DAYS OF COMPLETION PER ZONING ORDINANCE SECTION 5.1.28.
13. ALL INERT MATERIALS SHALL BE TRANSPORTED IN COMPLIANCE WITH SECTION 13-301 OF THE CODE OF ALBEMARLE.
14. BORROW, FILL OR WASTE ACTIVITY INVOLVING INDUSTRIAL -TYPE POWER EQUIPMENT SHALL BE LIMITED TO THE HOURS OF 7:00 AM TO 9:00 PM.
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 0 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 RYE GRASS AND CEREAL WINTER RYE, OR IN MARCH AND APRIL TO CONSIST OF ANNUAL RYE, OR MAYTHROUGH 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 RYE GRASS 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 DIKES 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.
80% REMOVAL RATE E&SC PROFFER ADDITIONAL REQUIRED EROSION MEASURES:
IN ADDITION TO THE NORMALLY REQUIRED ESC PRACTICES, ADDITIONAL MEASURES WILL BE TAKEN TO PROVIDE AN 80% REMOVAL RATE:
1. A MINIMUM OF 20% ADDITIONAL WET STORAGE AND 20% ADDITIONAL DRY STORAGE IS PROVIDED IN EACH SEDIMENT BASIN.
2. WIRE REINFORCED SILT FENCE, WITH STAKE SPACING AT 6' MINIMUM, SHALL BE USED INSTEAD OF THE TRADITIONAL SILT FENCE.
3. ALL TURFED AREAS SHALL RECEIVE PERMANENT SEEDING/MATTING WITHIN 7 DAYS OF FINAL GRADING COMPLETION. ANY INCOMPLETE AREA OF CONSTRUCTION THAT REMAINS DORMANT FOR MORE
THAN 14 DAYS SHALL RECEIVE TEMPORARY SEEDING.
4. ALAN FRANKLIN PE, LLC WILL SERVE AS A THIRD PARTY INSPECTOR TO ENSURE THAT THE APPROPRIATE MEASURES ARE BEING APPLIED AND TO MAKE SURE ADDITIONAL MEASURES ARE NOT REQUIRED.
THESE THIRD PARTY INSPECTIONS WILL OCCUR PRIOR TO AND IMMEDIATELY FOLLOWING INITIAL INSTALLATION OF EROSION AND SEDIMENT CONTROLS, ONCE A WEEK, WITHIN 24 HOURS OF ANY RUNOFF
PRODUCING STORM EVENT, AND AT THE COMPLETION OF THE PROJECT. ALL INSPECTIONS WILL BE DOCUMENTED BY A WRITTEN LOG AND FORWARD TO THE COUNTY INSPECTOR. THESE REPORTS WILL
CONTAIN THE DATE AND TIME OF INSPECTION, COMMENTS CONCERNING COMPLIANCE OR NONCOMPLIANCE, AND NOTES ON ANY VERBAL COMMUNICATIONS CONCERNING THE PROJECT.
W
WATER LINE (EX./ PROP.)
- - - - - - BOUNDARY/ RIGHT-OF-WAY LINE
WVO WMO
WATER VALVE/ METER
I.F. IRON PIN FOUND
FHA-&
FIRE HYDRANT
I.S. IRON PIN SET
YH -b}
YARD HYDRANT
- - - - - - - - - SETBACK LINE
BOA
BLOW -OFF ASSEMBLY
----------- EASEMENT LIMITS
SS
SANITARY SEWER LINE (EX. / PROP.)
- - - - CENTERLINE
CO o
CLEANOUT
--670 CONTOUR LINE (EX. / PROP.)
MH--
MANHOLE
<-3:1-- F-2.50* DEGREE/ DIRECTION OF SLOPE
SD---
STORM LINE (EX. / PROP.)
479.70+ SPOT ELEVATION
DI F -r-0-1
STORM INLET
HP HIGH POINT
YD ®
YARD DRAIN
LP LOW POINT
DS o
DOWNSPOUT
- . • . - • • • - • • - DITCH / SWALE
G
GAS LINE (EX. / PROP.)
_ _ _ =::: = WATER COURSE
GV0 GMO
GAS VALVE/ METER
BM+ BENCHMARK
OHE
OVERHEAD ELECTRIC (EX./ PROP.)
CG -2 VDOT STD. HEADER CURB
UGE
UNDERGROUND ELECTRIC (EX. / PROP.)
CG -6 VDOT STD. CURB & GUTTER
CG -12 VDOT STD. HANDICAP RAMP
PPO
POWER POLE
HC HANDICAP PARKING SYMBOL
LP*
LIGHT POLE
DIP DUCTILE IRON PIPE
GUY
GUY WIRE
RCP REINFORCED CONCRETE PIPE
EM o
ELECTRIC METER
CMP CORRUGATED METAL PIPE
FE
TRANSFORMER
PVC POLYVINYLCHLORIDE PIPE
OHT
OVERHEAD COMMUNICATIONS (EX. / PROP.)
HDPE HIGH-DENSITY POLYETHYLINE PIPE
UGT
UNDERGROUND COMMUNICATIONS (EX/ PROP.)
VC VITRIFIED CLAY PIPE
PED ❑
UTILITY PEDESTAL
FFE FINISHED FLOOR ELEVATION
TBR TO BE REMOVED
SWM/ DWM o/61
SINGLE/ DOUBLE WATER METER
TBT TO BE TRANSPLANTED
GV D4
GATE VALVE
TBS TO BE SAVED
BOA o
BLOW OFF ASSEMBLY
■
EXISTING CONDITIONS NOTE:
PHYSICAL, TOPOGRAPHIC & BOUNDARY: ROBERT LUM, DATED 5130103. ADDITIONAL SURVEY'WORK PROVIDED BY THOMAS B. LINCOLN
LAND SURVEYORS, DATED 5131107 & 11115107. EXISTING CONDITIONS AND TOPOGRAPHY VISUALLY VERIFIED BY ALAN FRANKLIN PE,
LLC AND LINCOLN SURVEYING WHILE ON SITE THROUGHOUT FEBRUARY 2017
CONSTRUCTION SEQUENCE:
STAGE 'A'
1. INSTALL CONSTRUCTION ENTRANCE AT EXISTING CURB CUT.
2. INSTALL PERIMETER SILT FENCE AND TREE PROTECTION. CONSULT THE TREE ARBORIST AND/OR
LANDSCAPE ARCHITECT PRIOR TO BEGINNING WORK.
3. INSTALL SEDIMENT BASIN #1 NEXT TO CONSTRUCTION ENTRANCE. INSTALL STRUCTURES SD Al AND SD A2
AND RISER STRUCTURE CONCURRENTLY WITH CONSTRUCTION OF BASIN AND CONNECT TO SD EX1.
4. INSTALL DIVERSION DIKE #1 AND RIGHT OF WAY DIVERSION 'TO DIVERT ON-SITE WATER TO BASIN #1.
5. SECURE FLAT AREA FOR LAYDOWN, EQUIPMENT STORAGE, ,AND CONTRACTOR TRAILER. ADD STONE AS
SURFACE.
6. INSTALL SEDIMENT BASINS #2. INSTALL STRUCTURES SD G1 THOUGH G6 AND OUTLET/CHANNEL
PROTECTION CONCURRENTLY WITH CONSTRUCTION OF BASIN.
7. INSTALL REMAINING DIVERSION DIKES TO DIRECT WATER TO BASINS.
8. INSTALL SAFETY FENCE AROUND SEDIMENT BASINS.
9. CLEAR AND GRUB SITE. SEE LIMITS OF DISTURBANCE. CONSULT THE TREE ARBORIST AND/OR LANDSCAPE
ARCHITECT PRIOR TO BEGINNING WORK. STRIP TOPSOIL AND STOCKPILE FOR LATER USE.
10. INSTALL CONSTRUCTION HAUL ROAD AS SHOWN AND PROCEED TO STAGE'B'.
STAGE 'B'
11. MAINTAIN PERIMETER CONTROLS FROM STAGE W AS INDICATED ABOVE.
12. BEGIN ROUGH GRADING AND INSTALL RETAINING WALLS AS; SHOWN ON STAGE'B' PLAN.
13. INSTALL DIVERSIONS AS NEED TO MAINTAIN DRAINAGE TO SEDIMENT BASINS. RETAINING WALLS WILL SERVE
TO DIVERT WATER TO BASINS.
14. INSTALL RIO ROAD FRONTAGE IMPROVEMENTS.
15. INSTALL SITE UTILITIES SUCH AS SANITARY SEWER, WATER„ GAS, AND POWER AS SHOWN ON STAGE'S'
PLAN. MARK ENDS WITH WITNESS POSTS
16. INSTALL STORM DRAIN PIPING AND INLETS AS SHOWN ON SITAGE 'B' PLAN.
17. INSTALL INLET PROTECTION AND OUTLET PROTECTION ON NEW STORM STRUCTURE.
18. MAT, SEED AND MULCH STEEP SLOPES THAT WILL REMAIN AS SUCH TO BEGIN STABILIZATION PROCESS.
STAGE 'C'
19. MAINTAIN PERIMETER CONTROLS FROM STAGE W AS INDICATED ABOVE.
20. AS ROUGH FINAL GRADES AND SUB -GRADES ARE ESTABLISHED, INSTALL STORM SEWER. ADD INLET
PROTECTION AT THESE LOCATIONS.
21. INSTALL PARKING AREA STONE BASE AND PERIMETER CURBING WHILE MAINTAINING INLET PROTECTION.
22. INSTALL CURB, SIDEWALKS, ETC. AND PLACE LANDSCAPING AND GROUNDCOVER PER PLANS. INSTALL
ASPHALT BASE PAVING AS SOON AS POSSIBLE.
23. REMOVE TEMPORARY DIVERSION DIKES ONCE NON -PAVED SEEDED AREAS ARE STABILIZED.
24. MAINTAIN SILT FENCE AND TREE PROTECTION ALONG PROPERTY BOUNDARY.
25. CONSULT REGULARLY WITH COUNTY EROSION CONTROL AGENT TO DETERMINE WHEN CERTAIN AREAS OF
SITE QUALIFY AS "STABILIZED." DECOMMISSION ES&C MEASURES AS PERMITTED. ENSURE THAT ADEQUATE
STABILIZATION PRIOR TO DEMOBILIZING SITE -WIDE IS ACCOMPLISHED.
26. THE STAGE 'C' PLAN CALLS FOR THE COMPLETE STABILIZATION AND INSTALLATION OF ALL SITE PLAN
IMPROVEMENTS FOR THE BUILDING D (THE BLAKE), AS SHOWN ON THE SITE PLAN, AND TURFED, PAD -READY
SITES FOR THE ROADS, DRIVES, PARKING AREAS, AND BUILDING PADS FOR BUILDINGS A -C, AND THE
TOWNHOMES.
27. ONCE THE STAGE 'C' PLAN HAS BEEN STABILIZED AND UPON PERMISSION FROM THE COUNTY INSPECTOR,
PROPERLY REMOVE SEDIMENT BASIN #2 AND CONVERT TO BIO -RETENTION BASIN.
STAGE 'D'
28. REMOVE SEDIMENT BASIN #1 AND ESTABLISH A FLAT, TURFED AREA AT ELEVATION 569.00
29. INSTALL REMAINING STORM DRAINS/INLETS WITH INLET PROTECTION, REMAINING GRAVEL BASE OF ROADS,
PARKING AREAS, AND BUILDING PADS AND COMPLETE SITE PLAN IMPROVEMENTS FOR REMAIN BUILDINGS
UTILITIES.
30. INSTALL UNDERGROUND SWM FACILITIES & MAKE CONNECTIONS TO STORM D AND STORM A. DO NOT
INITIALIZE STORMWATER QUALITY UNIT UNTIL ALL PAVING IS COMPLETE.
31. ONCE ALL SITE PLAN IMPROVEMENTS ARE INSTALLED AND STABILIZED, REMOVE ALL PERIMETER AND
INTERNAL EROSION CONTROL MEASURES.
ADDITIONAL INFORMATION
32, FLUSH CLEAN COMPLETE STORM SYSTEM PRIOR TO DEMOBILIZING AND FINAL INSPECTION.
33. USE DUST CONTROL AS NECESSARY DURING CONSTRUCTION.
34. DO NOT INSTALL BIO -FILTER MEDIA IN BIO -FILTERS UNTIL SITE HAS BEEN STABILIZED APPROVAL BY COUNTY
INSPECTOR IS REQUIRED.
35. DO NOT MAKE STORMWATER QUALITY UNITS OPERATIONAL UNTIL SITE HAS BEEN STABILIZED. APPROVAL BY
COUNTY INSPECTOR IS REQUIRED.
ESC LEGEND:
SAF SAFETY FENCE
3.01 VA E&SC STD.
CE TEMP. STONE CONSTRUCTION ENTRANCE
3.02 VA E&SC STD.
CRS CONSTRUCTION ROAD STABILIZATION
3.03 VA E&SC STD.
SF SILT FENCE
3.05 VA E&SC STD.
IP INLET PROTECTION
3.07 VA E&SC STD.
DD CULVERT INLET PROTECTION
3.08 VA E&SC STD.
DD TEMPORARY DIVERSION DIKE
3.09 VA E&SC STD.
RWD RIGHT-OF-WAY DIVERSION
3.11 VA E&SC STD.
BB TEMPORARY SEDIMENT BASIN
3.14 VA E&SC STD.
OP OUTLET PROTECTION
3.18 VA E&SC STD.
TO TOP SOILING
3.30 VA E&SC STD.
TS TEMPORARY SEEDING
3.31 VA E&SC STD.
PS PERMANENT SEEDING
3.32 VA E&SC STD.
MU MULCHING
3.35 VA E&SC STD.
B/M SOIL STABILIZATION BLANKETS & MATTING
3.36 VA E&SC STD.
TREE PROTECTION
TP
3.38 VA E&SC STD.
DC DUST CONTROL
3.39 VA E&SC STD.
27B ELIOAK LOAM, 2 TO 7 PERCENT SLOPES
65B PACOLET SANDY LOAM, 2 TO 7 PERCENT SLOPES
65C PACOLET SANDY LOAM, 7 TO 15 PERCENT SLOPES
94C WEDOWEE SANDY LOAM, 7 TO 15 PERCENT SLOPES
SHEET INDEX
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APPROVED
by the Albemarle County
Community Dowlopment Department
Date ----3
File --Ida 7�g3_
EXISTING CONDITIONS
GRADING PLAN (FROM SITE PLAN)
EROSION AND SEDIMENT CONTROL PLAN STAGE W
EROSION AND SEDIMENT CONTROL PLAN STAGE'S'
EROSION AND SEDIMENT CONTROL PLAN STAGE'C'
EROSION AND SEDIMENT CONTROL PLAN STAGED'
EROSION AND SEDIMENT CONTROL DETAILS
EROSION AND SEDIMENT CONTROL DETAILS
SWM: PRE -DEVELOPMENT DRAINAGE AREA MAP
SWM: POST -DEVELOPMENT DRAINAGE AREA MAP
SWM: WATER QUALITY/BMP AREA MAP
STORMWATER MANAGEMENT PLAN DETAILS
STORMWATER MANAGEMENT PLAN DETAILS
STORMWATER MANAGEMENT PLAN DETAILS
REVISIONS
REV DATE DESCRIPTION SHEETS REVISED
1. 04-23-17 COUNTY ENGINEERING COMMENTS
2. 03-20-18 WPO AMENDMENT 1
PLANNitaG/ZONING
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HERITAGE
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Edwards designStudlo, PLLC
Landscape Architecture and Site
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4936 Old Boonsboro Road
Lynchburg, VA 24503
telel 434.531.7507
el steve@edwardsdesignstudio.com
www.edwardsdesignstudio.com
ALAN G. FRANKLIN, P.E. LLC
Civil and Site Planning Engineering
427 Cranberry Lane, Crozet, VA 22932
telel 434.531.51544
el alan@alanfranklinpe.com
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*60 HDPE PERFORATED HDPE ALLOWED 6" PVC TO ALBEMARLE COUNTYGENERAL CONSTRUCTION NOTES FOR STORMWATER MANAGEMENT PLANS:
STORMFILTER 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.
STRUCTURE SHALL BE CONSTRUCTED 2. PIPE AND RISER JOINTS ARE TO BE WATERTIGHT WITHIN STORMWATER MANAGEMENT FACILITIES.
REINFORCED CONCRETE FROM SIGNED AND SEALED DOCUMENTS 3. FOR TEMPORARY SEDIMENT TRAPS OR BASINS WHICH ARE TO BE CONVERTED TO PERMANENT STORMWATER MANAGEMENT FACILITIES; CONVERSION IS NOT TO TAKE PLACE UNTIL THE SITE IS STABILIZED, AND PERMISSION HAS BEEN OBTAINED FROM THE COUNTY EROSION CONTROL
7.- BAFFLE WALL SECURED PRODUCED BY A LICENSED STRUCTURAL INSPECTOR.
TO STRUCTURE WALLS
ENGINEER
H,
T-T_ 4
15" HDPE PIPE
61.6" IT
i6o" CIVIRPIk j+4
71 -
(PERFORATED _T
j" VDOT STD.
EXPANDED STEEL MESH (FLATTENED) SHALL HAVE
ST -1 STEPS
OPENINGS OF APPROX. 112 "X 1 " AND WEIGH
APPROX
.0.82 LBS. PER SQ. FT. MESH SHALL BE
GALVANIZED IN ACCORDANCE WITH ASTM A-123.
THE MESH SHALL EXTEND A MINIMUM OF 1"
BEYOND ORIFICE, AND IS A BARRIER FOR
RODENTS, ETC. THE SLOT FOR THE STEEL MESH IS
TO BE CONSTRUCTED SO THAT THE MESH CAN BE
REMOVED FOR CLEANOUT PURPOSES.
PLAN
REINFORCED CONCRETE MANHOLE RISER ACCESS MANHOLE RISER ACCESS
RIM ELEV. 551.63
BAFFLE WALL SECURED RIM ELEV. 551.63
TO STRUCTURE WALLS
TW 548.20
VDOT STD.
ST -1 STEPS
VDOT STD.
A
ST STEPS
WEIR ELEV. 548.20
10 -YR ELEV. 548.15
7E
�1 �Q-YR ELEV. 8.15
-60" CMP PIPE
(PERFORATED)
j 25"(W) x 4"(H) ORIFICE
W/ TRASH RACK
61-6" I i INV. 546.35
2 -YR ELEV. 546.
, .11 6" x 6' ORIFICE
PO'
OMP PIPE 1 0 W1 TRASH RACK
INV. 544.62
;{PqqF ORAfllb)f/'7i 17
V! WQV ELEV. 544.62-
152 CU IC T
INV 543.20 10----
INV. 543.10
_JL
6" PVC SECTION
A
SWM A - OUTLET STRUCTURE A4
.
H
13 j DETAIL
555
550
545
535
-6"' PVC
43.20
INV.�5
Ney
TO STORMFIL I ER
15" HDPE PIPE
SECTION
TO STORMFILTER
ID -000
N.T.S.
60" CMP PIPE STORMWATER DETENTION UNIT
SCALE H: 1" = 10' V: 1" = 5'
G
Z
$
;V
V-1
-VGOT STD :DI- --(4THLRQAT)
f4
CONTjN
ECH
et
J
AC�D.
1 A
ST
'd
A-
ST
S'D-E
----------
3"0
- - - - - -
f
_D
1V
2_
6 LF OF115" HDPE (a i.0%
3K
T "CMP L---'-
f7c H
6 'x
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�S MANHOLEt.
L
WDOT STD. STA
555
OSP
535
6 LF tV'
3
��DPE @ 1.0% -TKO
_:WqF 60" CMP
A'
HEADER PIPE
8'x6' STORMFILTER VAULT W]
10 CARTRIDGES, OR EQUAL
PI
CONTECHLCMP
12-42
1z'
WATER QUALITY FLOW .RATE (cfs)
ACCESS MANHOLE
CON ECH CMP
7
40-72
&0
W7VDDT=.= - - - - - - - - - - - -
- - - - - - - -
ACCE S MANHOLE
- - - - - -
CONTECH CMP
ESS MANHOLE
&5
IM 555.02 PERMEABLE CONCRETE
W/ VD LLT STD. ST -1
6.5'x 6' PRECAST 601TILI
I
WI'VbOT STD. ST -1
INTERLOCK PAVER PARKING
RIM 552. 5
S TRUCTURE W/ BAFFLE
lin
S'D-E
----------
3"0
- - - - - -
f
_D
1V
2_
6 LF OF115" HDPE (a i.0%
3K
T "CMP L---'-
f7c H
6 'x
"F
�S MANHOLEt.
L
WDOT STD. STA
555
OSP
535
6 LF tV'
3
��DPE @ 1.0% -TKO
_:WqF 60" CMP
A'
HEADER PIPE
8'x6' STORMFILTER VAULT W]
10 CARTRIDGES, OR EQUAL
PI
8
SAN SEWER
41'S M/MAINTENANC SSMH
EASE ENT
_-J
1.
7- - - - - - - - - -gild - - - - -
20"ACSA.EAIEMENT
x
Iwo
Z�'
1 "x I- ------ -
A
. .......... ... ..
7 N'4
v
�6
i> 'I",
AL
NL
EN
13) SCALE: 111 10'
POPE SPA K
*K3*!S
CONTECHLCMP
12-42
WATER QUALITY FLOW .RATE (cfs)
ACCESS MANHOLE
CON ECH CMP
40-72
&0
W7VDDT=.= - - - - - - - - - - - -
- - - - - - - -
ACCE S MANHOLE
- - - - - -
CONTECH CMP
ESS MANHOLE
&5
IM 555.02 PERMEABLE CONCRETE
W/ VD LLT STD. ST -1
6.5'x 6' PRECAST 601TILI
I
WI'VbOT STD. ST -1
INTERLOCK PAVER PARKING
RIM 552. 5
S TRUCTURE W/ BAFFLE
RIM 557.40
INLET PI PE.#2
LOT
OUTLET PIPE
z
RIM 551.63
UPSTREAM RIM ELEVATION . L
(SEE DETAIL)
S 11S S S
S S
WIDTH
S
8
SAN SEWER
41'S M/MAINTENANC SSMH
EASE ENT
_-J
1.
7- - - - - - - - - -gild - - - - -
20"ACSA.EAIEMENT
x
Iwo
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1 "x I- ------ -
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7 N'4
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EN
13) SCALE: 111 10'
POPE SPA K
*K3*!S
AXLE LOADS fta)
W-75170-110019131
12-42
WATER QUALITY FLOW .RATE (cfs)
2.0
24
40-72
&0
&0
-0 -0
71111,4M
&0
&5
B
MEDIA TYPE (PERLITE,ZP.G, PSORB)
L' 4 TA I
AEqA
ar mot.
NOiE: -
L =ATM OF ALL MAI%KU$� SI Mi" fN.EiS
GUREM AM OUTLET CONTROL 37RUCnMM W
BE SM*U BY PRO=T DW*M OF MCM
70 FABRICATION.
2. ALL ROCOMEMM REPUMM"D ON THE SYS11EM
UL K DMOAD BY MANWACM0 TO OMM
TM ASW AWS AFTER RMOLLW OMM IS ISREIL
EBD - TO BE DE'E.%MED
C CONTECH MANHOLE DETAILS
13 SCALE: N.T.S.
F (7-0-)
TOP SLAB ACCESS
SEE FRAME AND COVER
DETAIL -\
ALTERNATE PIPE
LOCATION (TYP)
6" CONCRETE WALL
WIDTH MAY VARY
REGIONALLY
SECTION B -B
VAULT STYLE: OUTLETISUMP (NIB)
D CONTECH WATER QUALITY UNIT, OR EQUAL
13)
80 MM SOLIDER PERIMETER
BANDING COURSE
NO. 8 AGGREGATE
IN OPENINGS
EAGLE BAY AQUA BRIC 4-L
CONCRETE PAVERS
3 J" MIN. THICK
2" NO. 8 AGGREGATE
e- - - - - - - - - -
4" NO. 57 STONE
12" NO. 3 STONE
COMPACTED
SUBGRADE
111
ASPHALT/CON CRETE
PAVING SECTION
FLUSH CURB/EDGE
RESTRAINT
COMPACTED
SUBGRADE
VDOT 21A
GRAVEL
BASE
SECTION ABUTTING PAVING
PERMEABLE RMEABLE INTERLOCKING PERS
13 SECTION
A
'-FADFURM CONCKM MANHME
CAP CESUNW VY 04041M
1. 11E CONOMW CAP W.&L BE SIZO AND MMMO BY 01NM
SO
SFEWT 7W LOMB AN MOM INAM11101W SM, AIM HOT
Mq n
2. IM MMM GW VVA.L K 5= 10 PROVIDE AN ANWAIE
BOTFM AWA RAM ON THE ALLON14M BEARM CAPACITY
OF TW SM.
SM 8014" $0 TIM? W COLICREIE Cm fala EnGACE
MA*ME
CAP DErAIL
\m/ Sme W.T.&
STORMFILTER DESIGN NOTES
F
$TORMFILTER TREATMENT CAPACITY ISA FUNCTION OTHE CARTRIDGE SELECTION THE NUMBER OF CARTRIDGES. THE :STANDARD.VAULT
STYLE IS . SHOWN WITH THE MA . MAXIMUM NUMBER OF CARTRIDGES. (I 1 2) VAULT STYLE OPTION 1 , . LT SL INCLUDE OUTLET RAY (7). STORMFILTER AX6 PEAK
HYDRAULIC CAPACITY IS 1 CFS. IF THE SITE CONDITIONS EXCEED 1.8 CFS AN UPSTREAM BYPASS STRUCTURE IS REQUIRED
.CARTRIDGE SELECTION
- , -
CARTRIDGE HEIGHT 27" . LOW DROP
RECOMMENDED HYDRAULIC DROP (H) 11.07*L gprntEif 1
3.05 '
dpnvsf 1 gpm
SPECIFIC FLOW RATE (gpnVs� 2 gprnisf I gpmIsf 2. gpn-dsf 11 j57' W 2 gprhfaf `17*pWsf.I lgprrVsf.
1 1879 1 JLJ 7A '1xz
CARTRIDGE FLOW: RATE (g pm) 2Z5 1 12.53 7;5 10, .8.35 i5
1.01 9 P"51 OrL r- 1171U r LL)VV Mf-\ 1. r- 10 Ar I- MVV r U VVI I.m, r rivo r mvoymv - kr- UM. M) Mt:LJ 1A U N.L T
�r�
FRAME AND COVER
(DIAMETER VARIES)
N.T.S.
SITE SPECIFIC
DATA REQUIREMENTS
STRUCTURE ID
WATER QUALITY FLOW .RATE (cfs)
PEAK FLOW RATE (ds)
RETURN PERIOD OF PEAK. FLOW (m)
CARTRIDGE HEIGHT (V', 18,% LOW DROPLb))
-0 -0
NUMBEROF CARTRIDGES. REQUIRED
. Lu
2
00
CARTRIDGE FLOW. RATE
B
MEDIA TYPE (PERLITE,ZP.G, PSORB)
FIPE.D MATERIAL
ATA I.E.
:DIAMETER
INLET FIRE #1
INLET PI PE.#2
2
OUTLET PIPE
z
UPSTREAM RIM ELEVATION . L
DOWNSTREAM RIM ELEVATION
ANTI+LQTATION BALLAST
WIDTH
HEIGHT
NOTESISPECIALREQUIREIVIENTS:
PER ENGINEER L OF RECORD
GENERAL NOTES
1, CONTECH TO PROVIDE ALL MATERIALS UNLESS .NOTED .0-FHERW,ISE..
2. DIMENSIONS WITH (.)ARE REFERENCE DIMENSION . S. ACTUAL DIMENSIONS MAY VARY.
3. FOR SITE SPECIFIC DRAWINGS WITH DETAILED. VAULT DIMENSIONS AND WEIGHTS,
.PLEASE CONTACT YOUR CONTECH ENGINEERED SOLUTIONS
LLC REPRESENTATIVE.
. www;CorrtechES:com
4. STORMFILTER WATER QUALITY STRUCTURE SFIALL BE INACCORDANCE WITH ALL DESIGN DATA AND INFORMATIONCONTAINED IN THIS
DRAWING.
5' STRUCTURE 5HALLMEETAASHTCA620 LOAD RATING. ASSUMING EARTH COVER OFO'L_ 5'LAND GROUNDWATER
ELEVATION AT, OR BELOW, THE
OUTLET PIPE INVERT ELEVATION. ENGINEER OFRECORDLTO CONFIRM ACTUAL:.GRQUNDWATER ELEVATION. CASTINGS SHALL MEET.A. &SHTO
M306 AND BE CAST WITH THE CONTECH LOGO.
61 FILTER CARTRIDGES SHALL BE MEDIA -FILLED, PASSIVE,
SIPHON ACTUATED, RADIAL FLOW
AND.SELFLQLEANINO. RADIALLMEDLADEPTH SHALL,
ME SHALL BEAT LEAST SECONDS.
BE 7"INCHES. FILTER MEDIA, CONTACT TI.
7. SPECIFIC. FLOWRATEIS EQUAL 70 THE FILTER TREATMENT CAPACITYC SURFACE AREA (sq it);
(gpm) DIVIDED THE FILTER. CONTACT
ER Q L
5. 5TQRMFILT STRUCTURE SHALL BE. PRECAST CONFORMING TO ASTM Q-aW AND AASHT.. OADFACT R S N.M H
STRU 0 DE 1Q. ET OD
INSTALLATION NOTES
A.
ANY SUB BASE BACKFILL .DEPTH ,LANDIOR ANTI -FLOTATION PROVISIONS ARE SITE-SPECIFIC DSIG WCONSIDERATIONSAND SHA LL BE
SPECIFIED BY ENGINEER OF RECORD.
B. CONTRACTOR TO PROVIDE EQUIPMENT WITH SUFFICIENT LIFTING AND REACH CAPACITY TO LIFT AND SET THE STORMFILTER VAULT (LIFTING
CLUTCHES PROVIDED).
C. CONTRACTOR TO INSTALL JOINT SEALANT BETWEEN ALL VAULT SECTIONS ANDA SSEMBLEVAULT.
D. CONTRACTOR TO PROVIDE, INSTALL, AND GROUT PIPES. MATCH OUTLET PIPE INVERT WITH OUTLET BAY L FLOOR:
EL. TO CONTRACTOR TO TAKEAPPROPRIATE MEASURES PROTECT CARTRIDGES FROM CONSTRUCTION -RELATED EROSION RUNOFF.
VDOT 21A
GRAVEL BASE
FILTER FABRIC
LVA 01911&
NO. 8 AGGREGATE
IN OPENINGS
EAGLE BAY AQUA BRIG 4-L
CONCRETE PAVERS
3 Am MIN. THICK
2" NO. 8 AGGREGATE
4' NO. 57 STONE
12" NO. 3 STONE
6" PERFORATED SDR -35
UNDERDRAIN
(TIE TO STORM DRAINS)
COMPACTED SUBGRADE
SECTION ABUTTING CURB
NOTES:
INTERLOCKING PAVERS TO BE EAGLE BAY SWM
PAVE AQUA -BRIG 4 "L" PERMEABLE PAVER LAID
MECHANICALLY INSIDE 80MM PERIMETER SOLDIER
COURSE
CONTRACTOR TO VERIFY AND INSTALL AS
SPECIFIED BY MANUFACTOR/SUPPLIER TO ENSURE
ALL WARRANTIES
EXPANSION JOINTS SHALL BE EVERY 20' MAX.
CONSTRUCTION JOINTS SHALL BE EVERY 10' MAK.
PAVER COLOR TO BE DETERMINED BY OWNER AT
THE TIME OF ORDER.
P-050
NTS
SHEET: 0
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Alan G. Franklin
8
Lic. No. 35326
O
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SCALE: As Shown
ISSUED: 7 March 2018
p
REVISIONS:
2S
. Lm C
=8
<0
02-08-17, APPROVED BY BOS
04-23-17, CO. ENGR. COMMENTS
2. 01.23.18, SITE PLAN AMENDMENT
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3. 03.20.18 MINOR CO. COMMENTS
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0
SHEET: 0
LL
UJI
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0
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SWM Plan: SWM A
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Details