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SECTION 4 & 5, TOWNSHIP 29 NORTH, RANGE 5 EAST, W.M.
<br />SDCB-lA
<br />STORMFILTE
<br />18"CARTRIDGE
<br />RIM=40-22-10.
<br />5'
<br />IE (12" W) OU
<br />=7-72-7.90'
<br />15
<br />15
<br />r EXISTING GRADE
<br />FINI
<br />H GRADE ARAD
<br />10
<br />10
<br />92
<br />-9a LF 12" CPE
<br />S = 0T005 FT/F
<br />0.007
<br />5
<br />OUTFALLIE
<br />5
<br />7.29'
<br />0
<br />0
<br />0+00 0+30 0+60 0+90
<br />1+20
<br />STORMFILTER SDCB-lA TO OUTFALL PROFILE
<br />SCALE: H: 1"=30'
<br />V: 1 "=5'
<br />AS -BUILT CERTIFICATION:
<br />I HEREBY DECLARE TO THE BEST OF MY
<br />KNOWLEDGE THAT THE INFORMATION SHOWN
<br />HEREON REFLECTS THE "AS -CONSTRUCTED
<br />CONDITIONS". THIS CERTIFICATION IS BASED
<br />UPON WORK PREPARED IN ACCORDANCE WITH
<br />GENERALLY ACCEPTED PROFESSIONAL ENGINEERING AND/OR SURVEYING
<br />PRACTICES.
<br />STEVE D.MCCASKEY
<br />DATE: 5-29-24
<br />CONCRETE COLLAR
<br />ACCESS COVER AND REBAR TO MEET
<br />�. HS20 IF APPLICABLE BY
<br />-- -.<z - CONTRACTOR
<br />A A
<br />1
<br />-o
<br />I is m
<br />r Z Tz
<br />I-
<br />___ __1 VANED INLET GRATE
<br />- (SOLID COVER OPTIONAL)
<br />2-f 2'-4"
<br />INSIDE RIM IN RIM
<br />COLLAR OUTSIDE RIM
<br />PLAN VIEW
<br />4•_4aq- OPTIONAL
<br />SLOPED LID
<br />2'-0" 2'
<br />B � -V
<br />/
<br />a
<br />STORMFILTER TLY
<br />CARTRIDGE FILTRATION
<br />2 BAY INLET
<br />PERMANENT
<br />POOL ELEVATION
<br />CARTRIDGE
<br />SUPPORT
<br />FLOW KIT
<br />CATCHBASIN FOOT
<br />(TYP. OF 4)
<br />B �
<br />SECTION A -A
<br />INLET STUB
<br />(OPTIONAL)
<br />CLEANOUT
<br />ACCESS PLUG
<br />ON WEIR WALL
<br />Tik.-G,M,".9"m 4
<br />StormFilter°
<br />SDCB-2A
<br />STORMFILTE
<br />27" CARTR I DC
<br />E
<br />RIM=40 0310.
<br />0'
<br />IE (12" SE) OU
<br />=7.2&6.95'
<br />15
<br />F
<br />ISTING GRA
<br />E
<br />15
<br />FINISH GRADE
<br />\
<br />10
<br />10
<br />107 LF
<br />+40-LF 12"
<br />CpEp
<br />5
<br />S= 0 921- IfT/FT
<br />5
<br />OUTFAL
<br />I
<br />5.01'
<br />0
<br />0
<br />0+00 0+30 0+60
<br />0+90
<br />1+20
<br />STORMFILTER SDCB-2A TO OUTFALL PROFILE
<br />SCALE: H: 1"=30'
<br />V: 1 "=5'
<br />STORMFILTER STEEL CATCHBASIN DESIGN NOTES
<br />STORMFILTER TREATMENT CAPACITY IS A FUNCTION OF THE CARTRIDGE SELECTION AND THE NUMBER OF CARTRIDGES. 1 CARTRIDGE CATCHBASIN
<br />HAS A MAXIMUM OF ONE CARTRIDGE. SYSTEM IS SHOWN WITH A 27" CARTRIDGE, AND IS ALSO AVAILABLE WITH AN 18" CARTRIDGE. STORMFILTER
<br />CATCHBASIN CONFIGURATIONS ARE AVAILABLE WITH A DRY INLET BAY FOR VECTOR CONTROL.
<br />PEAK HYDRAULIC CAPACITY PER TABLE BELOW. IF THE SITE CONDITIONS EXCEED PEAK HYDRAULIC CAPACITY, AN UPSTREAM BYPASS STRUCTURE IS
<br />REQUIRED.
<br />CARTRIDGE SELECTION
<br />CARTRIDGE HEIGHT
<br />27"
<br />18"
<br />18" DEEP
<br />RECOMMENDED HYDRAULIC DROP (H)
<br />3.05'
<br />2.3'
<br />3.3'
<br />SPECIFIC FLOW RATE (gpm/sl)
<br />2 gpm/sf 1.67' gpm/sf 1 gpm/sf
<br />2 gpm/sf 1.67' gpm/sf 1 gpm/ sf
<br />2 gpm/sf 67' gpm/ 1 gpm/sf
<br />CARTRIDGE FLOW RATE (gpm)
<br />22.5 18.79 11.25
<br />15 12.53 7.5
<br />15 >13 7.5
<br />PEAK HYDRAULIC CAPACITY
<br />1.0
<br />1.0
<br />1.8
<br />INLET PERMANENT POOL LEVEL (A)
<br />1'-0"
<br />V-0"
<br />2'-0"
<br />OVERALL STRUCTURE HEIGHT B
<br />-
<br />1.67 gpm/sf SPECIFIC FLOW RATE IS APPROVED WITH PHOSPHOSORB`s (PSORB) MEDIA ONLY
<br />GENERAL NOTES
<br />1. CONTECH TO PROVIDE ALL MATERIALS UNLESS NOTED OTHERWISE.
<br />2. FOR SITE SPECIFIC DRAWINGS WITH DETAILED STORMFILTER CATCHBASIN STRUCTURE DIMENSIONS AND WEIGHTS, PLEASE CONTACT YOUR
<br />CONTECH ENGINEERED SOLUTIONS LLC REPRESENTATIVE. w .contechES.com
<br />3. STORMFILTER CATCHBASIN WATER QUALITY STRUCTURE SHALL BE IN ACCORDANCE WITH ALL DESIGN DATAAND INFORMATION CONTAINED IN
<br />THIS DRAWING.
<br />4. INLET SHOULD NOT BE LOWER THAN OUTLET. INLET (IF APPLICABLE) AND OUTLET PIPING TO BE SPECIFIED BY ENGINEER AND PROVIDED BY
<br />CONTRACTOR.
<br />5. MANUFACTURER TO APPLY A SURFACE BEAD WELD IN THE SHAPE OF THE LETTER "0" ABOVE THE OUTLET PIPE STUB ON THE EXTERIOR SURFACE
<br />OF THE STEEL SFCB.
<br />6. STORMFILTER CATCHBASIN EQUIPPED WITH 4INCH (APPROXIMATE) LONG STUBS FOR INLET (IF APPLICABLE) AND OUTLET PIPING. STANDARD
<br />OUTLET STUB IS 8INCHES IN DIAMETER. MAXIMUM OUTLET STUB IS 15 INCHES IN DIAMETER. CONNECTION TO COLLECTION PIPING CAN BE MADE
<br />USING FLEXIBLE COUPLING BY CONTRACTOR.
<br />7. STEEL STRUCTURE TO BE MANUFACTURED OF 1/4 INCH STEEL PLATE. CASTINGS SHALL MEET AASHTO M306 LOAD RATING. TO MEET HS20 LOAD
<br />RATING ON STRUCTURE, A CONCRETE COLLAR IS REQUIRED. WHEN REQUIRED, CONCRETE COLLAR WITH #4 REINFORCING BARS TO BE PROVIDED
<br />BY CONTRACTOR.
<br />8. FILTER CARTRIDGES SHALL BE MEDIA -FILLED, PASSIVE, SIPHON ACTUATED, RADIAL FLOW, AND SELF CLEANING. RADIAL MEDIA DEPTH SHALL BE
<br />7-INCHES. FILTER MEDIA CONTACT TIME SHALL BEAT LEAST 38 SECONDS.
<br />9. SPECIFIC FLOW RATE IS EQUAL TO THE FILTER TREATMENT CAPACITY (gpm) DIVIDED BY THE FILTER CONTACT SURFACE AREA (sq ft).
<br />INSTALLATION NOTES
<br />A. ANY SUB -BASE, BACKFILL DEPTH, AND/OR ANTI -FLOTATION PROVISIONS ARE SITE -SPECIFIC DESIGN CONSIDERATIONS AND SHALL BE SPECIFIED BY
<br />ENGINEER OF RECORD.
<br />B. CONTRACTOR TO PROVIDE EQUIPMENT WITH SUFFICIENT LIFTING AND REACH CAPACITY TO LIFT AND SET THE CATCHBASIN (LIFTING CLUTCHES
<br />PROVIDED).
<br />C. CONTRACTOR TO TAKE APPROPRIATE MEASURES TO PROTECT CARTRIDGES FROM CONSTRUCTION -RELATED EROSION RUNOFF.
<br />FLOATABLES
<br />BAFFLE
<br />PERMANENT LIFTING EYE
<br />POOL ELEVATION (TYP. OF 4)
<br />FINISHED GRADE - ------
<br />pir < ;
<br />WEIR WALL BE
<br />FILTRATION BAY 5
<br />INLET 5.
<br />FLOW
<br />INLET STUB
<br />(OPTIONAL)
<br />OUTLET STUB
<br />OUTLET PIPE
<br />♦ FROM FLOWKIT
<br />2'-0" CATCHBASIN FOOT
<br />INSIDE (TYP. OF 4)
<br />2'_0\z"
<br />OUTSIDE
<br />SECTION B-B
<br />CI:NTECHe
<br />ENGINEERED SOLUTIONS LLC
<br />w .conlechES.com
<br />9025 Centre Pointe Dr., Suite 400, West Chester, OH 45069
<br />1-CARTRIDGE CATCHBASIN
<br />STORMFILTER DATA
<br />STRUCTURE ID
<br />SDCB-17
<br />WATER QUALITY FLOW RATE Cfs
<br />0.023cfs
<br />PEAK FLOW RATE (<1 cfs)
<br />0.282cfs
<br />RETURN PERIOD OF PEAK FLOW Is
<br />100
<br />CARTRIDGE HEIGHT (27", 18' 18" DEEP)
<br />CARTRIDGE FLOW RATE (gpm)
<br />18"
<br />PSORB
<br />MEDIA TYPE PERLITE, ZPG, PSORB
<br />PSORB
<br />RIM ELEVATION
<br />9.21'
<br />PIPE DATA: I.E.
<br />INLET STUB NONE
<br />DIAMETER
<br />-
<br />OUTLET STUB 6.91'
<br />12"
<br />CONFIGURATION OUTLET OUTLET
<br />INLET ] n INLET
<br />INLET INLET
<br />SLOPED LID
<br />SOLID COVER
<br />YES\NO
<br />YES\NO
<br />NOTES/SPECIAL REQUIREMENTS:
<br />SDCB-1A DATA TABLE
<br />1 CARTRIDGE CATCHBASIN
<br />STORMFILTER
<br />STANDARD DETAIL
<br />BMP T5.13: POST -CONSTRUCTION SOIL
<br />QUALITY
<br />THIS BMP SHALL BE USED IN THE LANDSCAPED AREAS ON THE SITE AND ANY
<br />OTHER DISTURBED AREAS.
<br />PURPOSE AND DEFINITION
<br />NATURALLY OCCURRING (UNDISTURBED) SOIL AND VEGETATION PROVIDE
<br />IMPORTANT STORMWATER FUNCTIONS INCLUDING: WATER INFILTRATION;
<br />NUTRIENT, SEDIMENT, AND POLLUTANT ADSORPTION, SEDIMENT AND
<br />POLLUTANT BIOFILTRATION, WATER INTERFLOW STORAGE AND TRANSMISSION,
<br />AND POLLUTANT DECOMPOSITION. THESE FUNCTIONS ARE LARGELY LOST
<br />WHEN DEVELOPMENT STRIPS AWAY NATIVE SOIL AND VEGETATION AND
<br />REPLACES IT WITH MINIMAI TOPSOIL AND SOD. NOT ONLY ARE THESE
<br />IMPORTANT STORMWATER FUNCTIONS LOST, BUT SUCH LANDSCAPES
<br />THEMSELVES BECOME POLLUTION- GENERATING PERVIOUS SURFACES DUE TO
<br />INCREASED USE OF PESTICIDES, FERTILIZERS AND OTHER LANDSCAPING AND
<br />HOUSEHOLD/INDUSTRIAL CHEMICALS, THE CONCENTRATION OF PET WASTES,
<br />AND POLLUTANTS THAT ACCOMPANY ROADSIDE LITTER,
<br />ESTABLISHING SOIL QUALITY AND DEPTH REGAINS GREATER STORMWATER
<br />FUNCTIONS IN THE POST DEVELOPMENT LANDSCAPE, PROVIDES INCREASED
<br />TREATMENT OF POLLUTANTS AND SEDIMENTS THAT RESULT FROM
<br />DEVELOPMENT AND HABITATION, AND MINIMIZES THE NEED FOR SOME
<br />LANDSCAPING CHEMICALS, THUS REDUCING POLLUTION THROUGH
<br />PREVENTION.
<br />APPLICATIONS AND LIMITATIONS
<br />ESTABLISHING A MINIMUM SOIL QUALITY AND DEPTH IS NOT THE SAME AS
<br />PRESERVATION OF NATURALLY OCCURRING SOIL AND VEGETATION. HOWEVER,
<br />ESTABLISHING A MINIMUM SOIL QUALITY AND DEPTH WILL PROVIDE IMPROVED
<br />ON -SITE MANAGEMENT OF STORMWATER FLOW AND WATER QUALITY.
<br />SOIL ORGANIC MATTER CAN BE ATTAINED THROUGH NUMEROUS MATERIALS
<br />SUCH AS COMPOST, COMPOSTED WOODY MATERIAL, BIOSOLIDS, AND FOREST
<br />PRODUCT RESIDUALS. IT IS IMPORTANT THAT THE MATERIALS USED TO MEET
<br />THE SOIL QUALITY AND DEPTH BMP BE APPROPRIATE AND BENEFICIAL TO THE
<br />PLANT COVER TO BE ESTABLISHED. LIKEWISE, IT IS IMPORTANT THAT IMPORTED
<br />TOPSOILS IMPROVE SOIL CONDITIONS AND DO NOT HAVE AN EXCESSIVE
<br />PERCENT OF CLAY FINES.
<br />DESIGN GUIDELINES
<br />SOIL RETENTION
<br />THE DUFF LAYER AND NATIVE TOPSOIL SHOULD BE RETAINED IN AN
<br />UNDISTURBED STATE TO THE MAXIMUM EXTENT PRACTICABLE. IN ANY AREAS
<br />REQUIRING GRADING REMOVE AND STOCKPILE THE DUFF LAYER AND TOPSOIL
<br />ON SITE IN A DESIGNATED, CONTROLLED AREA, NOT ADJACENT TO PUBLIC
<br />RESOURCES AND CRITICAL AREAS, TO BE REAPPLIED TO OTHER PORTIONS OF
<br />THE SITE WHERE FEASIBLE.
<br />SOIL QUALITY
<br />ALL AREAS SUBJECT TO CLEARING AND GRADING THAT HAVE NOT BEEN
<br />COVERED BY IMPERVIOUS SURFACE, INCORPORATED INTO A DRAINAGE
<br />FACILITY OR ENGINEERED AS STRUCTURAL FILL OR SLOPE SHALL, AT PROJECT
<br />COMPLETION DEMONSTRATE THE FOLLOWING:
<br />1. A TOPSOIL LAYER WITH A MINIMUM ORGANIC MATTER CONTENT OFTEN
<br />PERCENT DRY WEIGHT IN PLANTING BEDS, AND 5% ORGANIC MATTER
<br />CONTENT (BASED ON A LOSS -ON -IGNITION TEST) IN TURF AREAS, AND A PH
<br />FROM 6.0 TO 8.0 OR MATCHING THE PH OF THE ORIGINAL UNDISTURBED SOIL.
<br />THE TOPSOIL LAYER SHALL HAVE A MINIMUM DEPTH OF EIGHT INCHES
<br />EXCEPT WHERE TREE ROOTS LIMIT THE DEPTH OF INCORPORATION OF
<br />AMENDMENTS NEEDED TO MEET THE CRITERIA. SUBSOILS BELOW THE
<br />TOPSOIL LAYER SHOULD BE SCARIFIED AT LEAST 4 INCHES WITH SOME
<br />INCORPORATION OF THE UPPER MATERIAL TO AVOID STRATIFIED LAYERS,
<br />WHERE FEASIBLE.
<br />2. PLANTING BEDS MUST BE MULCHED WITH 2 INCHES OF ORGANIC
<br />MATERIAL
<br />3. QUALITY OF COMPOST AND OTHER MATERIALS USED TO MEET THE
<br />ORGANIC CONTENT REQUIREMENTS:
<br />1-CARTRIDGE CATCHBASIN
<br />STORMFILTER DATA
<br />STRUCTURE ID
<br />SDCB71A
<br />WATER QUALITY FLOW RATE (CIS)
<br />PEAK FLOW RATE (<l cfs)
<br />0.037cfs
<br />0.445cfs
<br />RETURN PERIOD OF PEAK FLOW rs
<br />100
<br />CARTRIDGE HEIGHT (27", 18' 18" DEEP)
<br />CARTRIDGE FLOW RATE pm
<br />27"
<br />PSORB
<br />MEDIA TYPE PERLITE, ZPG, PSORB
<br />PSORB
<br />RIM ELEVATION
<br />9.00,
<br />PIPE DATA: I.E.
<br />DIAMETER
<br />INLET STUB NONE
<br />-
<br />OUTLET STUB 5.95'
<br />12"
<br />CONFIGURATION OUTLET OUTLET
<br />INLET ] INLET
<br />INLET INLET
<br />SLOPED LID
<br />SOLID COVER
<br />YES\NO
<br />YES\NO
<br />NOTES/SPECIAL REQUIREMENTS:
<br />SDCB-2A DATA TABLE
<br />A. THE ORGANIC CONTENT FOR "PRE -APPROVED" AMENDMENT RATES CAN
<br />BE MET ONLY USING COMPOST THAT MEETS THE DEFINITION OF
<br />"COMPOSTED MATERIALS" IN WAC 173-350-220. THIS CODE IS AVAILABLE
<br />ONLINE AT:
<br />HTTP://VWWV. ECY. WA. GOV FPROG RA M S/SW FA/FAC I LIT I ES/350. HT M L.
<br />COMPOST USED IN BIORETENTION AREAS SHOULD BE STABLE, MATURE
<br />AND DERIVED FROM YARD DEBRIS, WOOD WASTE, OR OTHER ORGANIC
<br />MATERIALS THAT MEET THE INTENT OF THE ORGANIC SOIL AMENDMENT
<br />SPECIFICATION. BIOSOLIDS AND MANURE COMPOSTS CAN BE HIGHER IN
<br />BIO-AVAILABLE PHOSPHORUS THAN COMPOST DERIVED FROM YARD OR
<br />PLANT WASTE AND THEREFORE ARE NOT ALLOWED IN BIORETENTION
<br />AREAS DUE TO THE POSSIBILITY OF EXPORTING BIO-AVAILABLE
<br />PHOSPHORUS IN EFFLUENT.
<br />THE COMPOST MUST ALSO HAVE AN ORGANIC MATTER CONTENT OF 35%TO
<br />65%, AND A CARBON TO NITROGEN RATIO BELOW 25:1.
<br />THE CARBON TO NITROGEN RATIO MAY BE AS HIGH AS 351 FOR PLANTINGS
<br />COMPOSED ENTIRELY OF PLANTS NATIVE TO THE PUGET SOUND LOWLANDS
<br />REGION.
<br />B. CALCULATED AMENDMENT RATES MAY BE MET THROUGH USE OF
<br />COMPOSTED MATERIALS AS DEFINED ABOVE; OR OTHER ORGANIC
<br />MATERIALS AMENDED TO MEET THE CARBON TO NITROGEN RATIO
<br />REQUIREMENTS, AND MEETING THE CONTAMINANT STANDARDS OF GRADE
<br />A COMPOST.
<br />THE RESULTING SOIL SHOULD BE CONDUCIVE TO THE TYPE OF VEGETATION
<br />TO BE ESTABLISHED.
<br />IMPLEMENTATION OPTIONS: THE SOIL QUALITY DESIGN GUIDELINES LISTED
<br />ABOVE CAN BE MET BY USING ONE OF THE METHODS LISTED BELOW.
<br />1. LEAVE UNDISTURBED NATIVE VEGETATION AND SOIL, AND PROTECT FROM
<br />COMPACTION DURING CONSTRUCTION.
<br />2. AMEND DISTURBED SOIL ACCORDING TO THE FOLLOWING PROCEDURES:
<br />A. SCARIFY SUBSOIL TO A DEPTH OF ONE FOOT
<br />B. IN PLANTING BEDS, PLACE THREE INCHES OF COMPOST AND TILL IN TO
<br />AN EIGHT -INCH DEPTH.
<br />C. IN TURF AREAS, PLACE TWO INCHES OF COMPOST AND TILL IN TO AN
<br />EIGHT -INCH DEPTH.
<br />D. APPLY TWO TO FOUR INCHES OF ARBORIST WOOD CHIP, COARSE BARK
<br />MULCH, OR COMPOST MULCH TO PLANTING BEDS AFTER FINAL PLANTING.
<br />ALTERNATIVELY, DISTURBED SOIL CAN BE AMENDED ON A SITE -CUSTOMIZED
<br />MALULER SO THAT IT MEETS THE SOIL QUALITY CRITERIA SET FORTH ABOVE,
<br />AS DETERMINED BY A LICENSED ENGINEER, GEOLOGIST, LANDSCAPE
<br />ARCHITECT, OR OTHER PERSON AS APPROVED BY SNOHOMISH COUNTY.
<br />3. STOCKPILE EXISTING TOPSOIL DURING GRADING AND REPLACE IT PRIOR
<br />TO PLANTING. STOCKPILED TOPSOIL MUST BE AMENDED IF NEEDED TO MEET
<br />THE ORGANIC MATTER AND DEPTH REQUIREMENTS BY FOLLOWING THE
<br />PROCEDURES IN METHOD (2) ABOVE.
<br />4. IMPORT TOPSOIL MIX OF SUFFICIENT ORGANIC CONTENT AND DEPTH TO
<br />MEET THE ORGANIC MATTER AND DEPTH REQUIREMENTS.
<br />MORE THAN ONE METHOD MAY BE USED ON DIFFERENT PORTIONS OF THE
<br />SAME SITE. SOIL THAT ALREADY MEETS THE DEPTH AND ORGANIC MATTER
<br />QUALITY STANDARDS, AND IS NOT COMPACTED, DOES NOT NEED TO BE
<br />AMENDED.
<br />MAINTENANCE
<br />1. SOIL QUALITY AND DEPTH SHOULD BE ESTABLISHED TOWARD THE END OF
<br />CONSTRUCTION AND ONCE ESTABLISHED, SHOULD BE PROTECTED FROM
<br />COMPACTION, SUCH AS FROM LARGE MACHINERY USE, AND FROM EROSION.
<br />2. SOIL SHOULD BE PLANTED AND MULCHED AFTER INSTALLATION.
<br />3. PLANT DEBRIS OR ITS EQUIVALENT SHOULD BE LEFT ON THE SOIL SURFACE
<br />TO REPLENISH ORGANIC MATTER.
<br />DISCHARGE PIPE,
<br />BEVEL PIPE TO SLOPE.
<br />DEBRIS BARRIER
<br />PER STD DTL 435
<br />LENGTH, L -
<br />NON -WOVEN
<br />GEOTEXTILE
<br />UNDER ROCK
<br />ROCK LINING,
<br />SEE BELOW
<br />PLACE ROCK 1.0'
<br />ABOVE CROWN
<br />FLOW
<br />REQUIRED DIMENSIONS
<br />SIZE LENGTH WIDTH DEPTH OF ROCK
<br />LARGE 8' MIN DIA. PLUS 6' MIN 12" MIN
<br />ROCK LINING
<br />TO BE QUARRY SPALLS PER WSDOT 9-13.6
<br />CULVERT OUTFALL PAD
<br />SCALE: NONE
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<br />DATE:
<br />9/14/23
<br />JOB #:
<br />21-162
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<br />Know. whes below.
<br />Call before you dig.
<br />C3ml
<br />P:\WORK\PROJECTS\2021\21-162 SEA CON\CE\DWG\SHEETS\C3.0 GRADING SMALL.DWG 9/14/2023
<br />UNPUBLISHED WORK COPYRIGHT© 2023 BY HARMSEN &ASSOCIATES INC.
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