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RECOMMENDED FOR APPOVAL
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STORMFILTER DESIGN NOTES
CARTRIDGE HEIGHT
SPECIFIC FLOW RATE (gpm/sf)
CARTRIDGE FLOW RATE (gpm)
RECOMMENDED HYDRAULIC DROP (H)
27"18"LOW DROP
3.05'2.3'1.8'
2 gpm/ft²
22.5
1 gpm/ft²2 gpm/ft²1 gpm/ft²2 gpm/ft²1 gpm/ft²
11.25 15 7.5 10 5
STORMFILTER TREATMENTCAPACITY IS A FUNCTION OF THE CARTRIDGE SELECTION AND THE NUMBER OF CARTRIDGES. THE STANDARD MANHOLE
STYLE IS SHOWN WITH THE MAXIMUM NUMBER OF CARTRIDGES (7). VOLUME SYSTEM IS ALSO AVAILABLE WITH MAXIMUM 7 CARTRIDGES.
Ø72" MANHOLE STORMFILTER PEAK HYDRAULIC CAPACITY IS 1.5 CFS. IF THE SITE CONDITIONS EXCEED 1.5 CFS AN UPSTREAM BYPASS STRUCTURE IS
REQUIRED.
CARTRIDGE SELECTION
GENERAL NOTES
1.CONTECH TO PROVIDE ALL MATERIALS UNLESS NOTED OTHERWISE.
2.DIMENSIONS MARKED WITH ( ) ARE REFERENCE DIMENSIONS. ACTUAL DIMENSIONS MAY VARY.
3.FOR SITE SPECIFIC DRAWINGS WITH DETAILED VAULT DIMENSIONS AND WEIGHTS, PLEASE CONTACT YOUR CONTECH ENGINEERED SOLUTIONS
LLC REPRESENTATIVE. www.contechES.com
4.STORMFILTER WATER QUALITY STRUCTURE SHALL BE IN ACCORDANCE WITH ALL DESIGN DATA AND INFORMATION CONTAINED IN THIS
DRAWING.
5.STRUCTURE SHALL MEET AASHTO HS20 LOAD RATING, ASSUMING EARTH COVER OF 0' - 5' AND GROUNDWATER ELEVATION AT, OR BELOW, THE
OUTLET PIPE INVERT ELEVATION. ENGINEER OF RECORD TO CONFIRM ACTUAL GROUNDWATER ELEVATION. CASTINGS SHALL MEET AASHTO
M306 AND BE CAST WITH THE CONTECH LOGO.
6.FILTER CARTRIDGES SHALL BE MEDIA-FILLED, PASSIVE, SIPHON ACTUATED, RADIAL FLOW, AND SELF CLEANING. RADIAL MEDIA DEPTH SHALL
BE 7-INCHES. FILTER MEDIA CONTACT TIME SHALL BE AT LEAST 39 SECONDS.
7.SPECIFIC FLOW RATE IS EQUAL TO THE FILTER TREATMENT CAPACITY (gpm) DIVIDED BY THE FILTER CONTACT SURFACE AREA (sq ft).
INSTALLATION NOTES
1.ANY SUB-BASE, BACKFILL DEPTH, AND/OR ANTI-FLOTATION PROVISIONS ARE SITE-SPECIFIC DESIGN CONSIDERATIONS AND SHALL BE
SPECIFIED BY ENGINEER OF RECORD.
2.CONTRACTOR TO PROVIDE EQUIPMENT WITH SUFFICIENT LIFTING AND REACH CAPACITY TO LIFT AND SET THE STORMFILTER STRUCTURE
(LIFTING CLUTCHES PROVIDED).
3.CONTRACTOR TO INSTALL JOINT SEALANT BETWEEN ALL STRUCTURE SECTIONS AND ASSEMBLE STRUCTURE.
4.CONTRACTOR TO PROVIDE, INSTALL, AND GROUT INLET PIPE(S).
5.CONTRACTOR TO PROVIDE AND INSTALL CONNECTOR TO THE OUTLET RISER STUB. STORMFILTER EQUIPPED WITH A DUAL DIAMETER HDPE
OUTLET STUB AND SAND COLLAR. IF OUTLET PIPE IS LARGER THAN 8 INCHES, CONTRACTOR TO REMOVE THE 8 INCH OUTLET STUB AT MOLDED
IN CUT LINE. COUPLING BY FERNCO OR EQUAL AND PROVIDED BY CONTRACTOR.
6.CONTRACTOR TO TAKE APPROPRIATE MEASURES TO PROTECT CARTRIDGES FROM CONSTRUCTION-RELATED EROSION RUNOFF.
STRUCTURE ID
WATER QUALITY FLOW RATE (cfs)
PEAK FLOW RATE (cfs)
RETURN PERIOD OF PEAK FLOW (yrs)
# OF CARTRIDGES REQUIRED
MEDIA TYPE (CSF, PERLITE, ZPG, GAC, PHS)
PIPE DATA:I.E.MATERIAL DIAMETER
INLET PIPE #1
INLET PIPE #2
OUTLET PIPE
SITE SPECIFIC
DATA REQUIREMENTS
WIDTH HEIGHTANTI-FLOTATION BALLAST
NOTES/SPECIAL REQUIREMENTS:
RIM ELEVATION
CARTRIDGE FLOW RATE
* PER ENGINEER OF RECORD
**
368.90
12"LCPE348.85
***
12"LCPE351.90
CSF
11.25
6
100
1.03
0.046
CB 14
TOP SLAB ACCESS
SEE FRAME AND
COVER DETAIL
CONTRACTOR TO GROUT TO
FINISHED GRADE
GRADE
RING/RISERS
SECTION A-A
PLAN VIEW
FLOW KITOUTLET SUMP
STORMFILTER
CARTRIDGE
HDPE OUTLET RISER
72 " I.D. MANHOLE
STRUCTURE
(86") O.D.
OUTLET
SUMP
OUTLET
FLOATABLES
BAFFLE
STANDARD OUTLET RISER
FLOWKIT: 42A
INLET PIPE
INLET
INSIDE HEIGHT6' TYPICALHYDRAULIC DROP(H) INLET INV.TO OUTLET INV.FRAME AND COVER
(DIAMETER VARIES)
N.T.S.
A
A