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BMP 12.20 - POST -CONSTRUCTION SOIL AMENDING OPTIONS:
<br />OPTION 1 - AMEND EXISTING SOILS IN PLACE:
<br />SCARIFY OR TILL EXISTING SUBGRADE TO 4 INCHES DEPTH (OR TO DEPTH NEEDED TO ACHIEVE A
<br />TOTAL DEPTH OF 12 INCHES OF UNCOMPACTED SOIL AFTER CALCULATED AMOUNT OF AMENDMENT IS
<br />ADDED, SEE SPECIFIC SUBSECTIONS BELOW). ENTIRE SURFACE SHOULD BE DISTURBED BY
<br />SCARIFICATION. DO NOT SCARIFY WITHIN DRIP LINE OF EXISTING TREES TO BE RETAINED.
<br />WITHIN STORMWATER DRAINAGE SYSTEM LOCATIONS OR LANDSCAPED AREAS (10 PERCENT ORGANIC
<br />CONTENT) - PLACE AND ROTOTILL 3 INCHES OF COMPOSTED MATERIAL INTO 5 INCHES OF SOIL (A
<br />TOTAL DEPTH OF ABOUT 9.5 INCHES, FOR A SETTLED DEPTH OF 8 INCHES). AS NOTED PREVIOUSLY,
<br />SUBSOILS BELOW THIS LAYER SHOULD BE SCARIFIED AT LEAST 4 INCHES, FOR A FINISHED MINIMUM
<br />DEPTH OF 12 INCHES OF UNCOMPACTED SOIL. RAKE BEDS TO SMOOTH AND REMOVE ROCKS
<br />LARGER THAN 2 INCHES DIAMETER. MULCH AREAS WITH 2 INCHES OF ORGANIC MULCH.
<br />WITHIN LAWN AREAS (5 PERCENT ORGANIC CONTENT) - PLACE AND ROTOTILL 1.75 INCHES OF
<br />COMPOSTED MATERIAL INTO 6.25 INCHES OF SOIL (A TOTAL AMENDED DEPTH OF ABOUT 9.5 INCHES,
<br />FOR A SETTLED DEPTH OF 8 INCHES). AS NOTED PREVIOUSLY, SUBSOILS BELOW THIS LAYER
<br />SHOULD BE SCARIFIED AT LEAST 4 INCHES, FOR A FINISHED MINIMUM DEPTH OF 12 INCHES OF
<br />UNCOMPACTED SOIL. WATER OR ROLL TO COMPACT SOIL TO 85 PERCENT OF MAXIMUM. RAKE TO
<br />LEVEL, AND REMOVE SURFACE WOODY DEBRIS AND ROCKS LARGER THAN 1 INCH IN DIAMETER.
<br />OPTION 2 - STOCKPILE SITE TOPSOILS PRIOR TO GRADING FOR
<br />REAPPLICATION:
<br />IF PLACED TOPSOIL PLUS COMPOST OR OTHER ORGANIC MATERIAL WILL AMOUNT TO LESS THAN 12
<br />INCHES., SCARIFY OR TILL SUBGRADE TO DEPTH NEEDED TO ACHIEVE 12 INCHES OF LOOSENED SOIL
<br />AFTER TOPSOIL AND AMENDMENT ARE PLACED. ENTIRE SURFACE SHOULD BE DISTURBED BY
<br />SCARIFICATION. DO NOT SCARIFY WITHIN DRIP LINE OF EXISTING TREES TO BE RETAINED.
<br />STOCKPILE AND COVER SOIL WITH WEED BARRIER MATERIAL THAT SHEDS MOISTURE YET ALLOWS AIR
<br />TRANSMISSION, IN APPROVED LOCATION, PRIOR TO GRADING.
<br />REPLACE STOCKPILED TOPSOIL PRIOR TO PLANTING.
<br />WITHIN STORMWATER DRAINAGE SYSTEM LOCATIONS OR LANDSCAPED AREAS (10 PERCENT ORGANIC
<br />CONTENT) - PLACE AND ROTOTILL 3 INCHES OF COMPOSTED MATERIAL INTO 5 INCHES OF
<br />REPLACED SOIL (A TOTAL DEPTH OF ABOUT 9.5 INCHES, FOR A SETTLED DEPTH OF 8 INCHES).
<br />SUBSOILS BELOW THIS LAYER SHOULD BE SCARIFIED AT LEAST 4 INCHES, FOR A FINISHED MINIMUM
<br />DEPTH OF 12 INCHES OF UNCOMPACTED SOIL. RAKE BEDS TO SMOOTH AND REMOVE ROCKS
<br />LARGER THAN 2 INCHES IN DIAMETER. MULCH AREAS WITH 2 INCHES OF ORGANIC MULCH OR
<br />STOCKPILED DUFF.
<br />WITHIN LAWN AREAS (5 PERCENT ORGANIC CONTENT) - PLACE AND ROTOTILL 1.75 INCHES OF
<br />COMPOSTED MATERIAL INTO 6.25 INCHES OF REPLACED SOIL (A TOTAL AMENDED DEPTH OF ABOUT
<br />9.5 INCHES, FOR A SETTLED DEPTH OF 8 INCHES). SUBSOILS BELOW THIS LAYER SHOULD BE
<br />SCARIFIED AT LEAST 4 INCHES, FOR A FINISHED MINIMUM DEPTH OF 12 INCHES OF UNCOMPACTED
<br />SOIL. WATER OR ROLL TO COMPACT SOIL TO 85 PERCENT OF MAXIMUM. RAKE TO LEVEL, AND
<br />REMOVE SURFACE WOODY DEBRIS AND ROCKS LARGER THAN 1 INCH IN DIAMETER.
<br />OPTION 3 - IMPORT TOPSOIL MEETING ORGANIC MATTER CONTENT
<br />STANDARDS:
<br />SCARIFY OR TILL SUBGRADE IN TWO DIRECTIONS TO 6 INCHES DEPTH. ENTIRE SURFACE SHOULD BE
<br />DISTURBED BY SCARIFICATION. DO NOT SCARIFY WITHIN DRIP LINE OF EXISTING TREES TO BE
<br />RETAINED.
<br />WITHIN STORMWATER ORAINAGE SYSTEM LOCATIONS OR LANDSCAPED AREAS (/0 PERCENT
<br />ORGANIC CONTENT) - USE IMPORTED TOPSOIL MIX CONTAINING 10 PERCENT ORGANIC MATTER
<br />(TYPICALLY AROUND 40 PERCENT COMPOST). SOIL PORTION MUST BE SAND OR SANDY LOAM AS
<br />DEFINED BY THE USDA. PLACE 3 INCHES OF IMPORTED TOPSOIL MIX ON SURFACE AND TILL INTO 2
<br />INCHES OF SOIL. PLACE 3 INCHES OF TOPSOIL MIX ON THE SURFACE. RAKE SMOOTH AND REMOVE
<br />SURFACE ROCKS OVER 2 INCHES DIAMETER. MULCH PLANTING BEDS WITH 2 INCHES OF ORGANIC
<br />MULCH.
<br />WITHIN LAWN AREAS (5 PERCENT ORGANIC CONTENT) - USE IMPORTED TOPSOIL MIX CONTAINING
<br />5 PERCENT ORGANIC MATTER (TYPICALLY AROUND 25 PERCENT COMPOST). SOIL PORTION MUST BE
<br />SAND OR SANDY LOAM AS DEFINED BY THE USDA. PLACE 3 INCHES OF IMPORTED TOPSOIL MIX ON
<br />SURFACE AND TILL INTO 2 INCHES OF SOIL. WATER OR ROLL TO COMPACT SOIL TO 85 PERCENT
<br />MAXIMUM. RAKE TO LEVEL, AND REMOVE SURFACE ROCKS LARGER THAN 1 INCH IN DIAMETER.
<br />AMENDED SOIL ELEVATIONNOTES:
<br />DUE TO SCARIFICATION, SOIL AMENDING AND RELATIVE COMPACTION, FINAL SOIL
<br />ELEVATIONS WILL INCREASE DEPENDING ON AMOUNT OF SOIL AMENDING. TYPICAL
<br />AMOUNTS OF INCREASE ARE:
<br />AMENDED SOIL DEPTH INCREASE IN ELEVATION
<br />12" 6.5"
<br />6" 3.2"
<br />4" 2 2"
<br />J. 2. 1"
<br />DRAINAGE NOTES:
<br />1. NO PART OF THE DRAINAGE SYSTEM SHALL BE COVERED, CONCEALED, OR PUT INTO USE UNTIL IT
<br />HAS BEEN INSPECTED, TESTED, AND ACCEPTED BY THE CITY OF EVERETT
<br />2. ALL WORK AND MATERIAL SHALL CONFORM TO THE CITY OF EVERETT DESIGN AND CONSTRUCTION
<br />STANDARDS AND SPECIFICATIONS AND THE WSDOT/APWA STANDARD SPECIFICATIONS FOR ROAD,
<br />BRIDGE, AND MUNICIPAL CONSTRUCTION (CURRENT EDITION).
<br />3. APPROXIMATE LOCATIONS OF EXISTING UTILITIES HAVE BEEN OBTAINED FROM AVAILABLE RECORDS AND
<br />ARE SHOWN FOR CONVENIENCE. THE CONTRACTOR SHALL BE RESPONSIBLE FOR VERIFICATION OF
<br />LOCATIONS AND TO AVOID DAMAGE TO ANY ADDITIONAL UTILITIES SHOWN. IF CONFLICTS WITH EXISTING
<br />UTILITIES ARISE DURING CONSTRUCTION, THE CONTRACTOR SHALL NOTIFY THE PUBLIC WORKS
<br />INSPECTOR AND ANY CHANGES REQUIRED SHALL BE APPROVED BY THE CITY ENGINEER PRIOR TO
<br />COMMENCEMENT OF RELATED CONSTRUCTION ON THE PROJECT.
<br />4. ALL STORM SYSTEMS WITHIN THE PUBLIC RIGHT-OF-WAY OR IN EASEMENTS MUST BE STAKED BY
<br />SURVEY FOR LINE AND GRADE PRIOR TO STARTING CONSTRUCTION.
<br />5. ALL CATCH BASIN GRATES MUST BE STENCILED OR STAMPED "DUMP NO WASTE, DRAINS TO STREAM,
<br />LAKE, RIVER, PUGET SOUND, OR WETLAND. "CHOOSE APPROPRIATE FEATURE FOR THE PROJECT
<br />580
<br />lu
<br />= o
<br />U M rn
<br />moo+
<br />o+
<br />1.507 ACROSS
<br />SIDEWALK
<br />570
<br />STD DTL 405
<br />STA 5+49.1
<br />RIM=574.5
<br />560 IE(N,S)=571.75 6"
<br />555
<br />5+00
<br />T T7(3AAM
<br />PVT STA: 5+89.00
<br />PVT STA: 6+39.00
<br />PVT STA: 6+89.00
<br />PVT ELEV.- 575.37
<br />PVT ELEV: 574.37
<br />PVT ELEV: 575.37
<br />K: 12.51
<br />K: 12.52
<br />K: 12.50
<br />LVC: 50.00
<br />LVC: 50.00
<br />LVC: 50.00
<br />HIGH PT.
<br />LOW PT.
<br />HIGH PT.
<br />8
<br />ro
<br />STA: 5+89.03
<br />o
<br />ro
<br />STA: 6+38.97
<br />o
<br />ro
<br />STA: 6+89.00
<br />o
<br />ro
<br />ELEV.• 575.12
<br />ELEV. 574.62
<br />ELEV. 575.12
<br />h
<br />c
<br />U
<br />�
<br />m
<br />�
<br />EX. GRADE AT C.L. w m
<br />OF DRIVE AISLE +
<br />0
<br />_ oN
<br />\ BUILDING A & B z
<br />4 - 99.7 _
<br />2.60' \
<br />\ 2.1 „
<br />\ i
<br />LP. W TEDRlk
<br />0
<br />STA 6+39.0\
<br />RIM=574.6 \
<br />1' MIN.
<br />6k159' STORMTANK
<br />5.5' <
<br />LIVESTORAGED
<br />6+00
<br />DRIVE AISLE PROFILE
<br />SCALE: HORZ: 1"-40'
<br />VERT: 1"=4'
<br />FENCE (AS NOTED)
<br />X X X
<br />ASS E�
<br />EXISTING SANITARY SEWER
<br />i SD p-
<br />EXISTING STORM DRAIN
<br />W
<br />EXISTING WATER LINE
<br />EXISTING VERTICAL CURB
<br />EDGE OF PAVEMENT
<br />-- -
<br />ROW CENTER LINE
<br />PROPERTY LINE
<br />- -
<br />RIGHT OF WAY
<br />EXISTING LOT LINES
<br />❑
<br />EX. CATCH BASIN (CB)
<br />\/
<br />EX. CULVERT INLET
<br />O
<br />W
<br />EX. WATER VALVE
<br />Hl
<br />EX. WATER METER
<br />EX. FIRE HYDRANT
<br />\
<br />EX. POWER POLE
<br />EX. UTILITY POLE ANCHOR
<br />OT
<br />EX. TELEPHONE PEDESTAL
<br />DE
<br />EX. ELECTRIC JUNCTION BOX
<br />EXISTING BUILDING
<br />EX. SANITARY SEWER MANHOLE (SSMH)
<br />EXISTING CONCRETE
<br />PROPOSED CONCRETE
<br />PROPOSED ASPHALT
<br />Fr ,11
<br />PROPOSED BUILDING FOOTPRINT
<br />L - _ J
<br />W/ ROOF OVERHANG
<br />SD ol
<br />PROPOSED STORM LINE
<br />SS so
<br />PROPOSED SEWER LINE
<br />W
<br />PROPOSED WATER LINE
<br />ii
<br />PROPOSED CATCH BASIN
<br />•
<br />PROPOSED MANHOLE
<br />PROPOSED WATER METER
<br />PROPOSED SPLASH BLOCK
<br />ASPHALT SAWCUT LINE
<br />580
<br />570
<br />5OLF DISPER
<br />TOP TI
<br />10
<br />CENTERED
<br />560
<br />555
<br />PROPOSED GRADE AT
<br />C.L. OF DRIVE AISLE
<br />SW 1/4, SE 1/4, SEC.13, T.28N., RAE., W.M.
<br />CITY OF EVERETT, SNOHOMISH COUNTY, WA
<br />I\
<br />o � \
<br />/
<br />ROOF DRAIN INLET
<br />IE=571.75
<br />-9' WALL 10' FROM
<br />PROPERTY LINE
<br />STD DTL 405
<br />STA 7414.1
<br />00 12"
<br />7+00 7+30
<br />ELEV-574.64'
<br />MAGNETIC NAIL SET WEST SIDE OF
<br />VERTICAL DATUM: EAST BACK OF WALK, 6' NORTH
<br />NAVD88 OF TFI FPHONF PFDFSTAI.
<br />Ll
<br />w-
<br />N O
<br />Ll+
<br />0
<br />PROPOSED GRADE
<br />cc
<br />w Un AT DETENTION
<br />DUrLET
<br />ON TRENCH
<br />ENCH=566.5�
<br />60LF 12" D.I.
<br />F DI SLEEVE
<br />® 1.009
<br />UNDER WALL
<br />CBX
<br />-TYPE I
<br />STD
<br />DTL 402
<br />STA
<br />10+33.5
<br />SDMMI-TYPE 54"
<br />RIM
<br />566.5
<br />W10PENGRATERIM
<br />IE N
<br />-564.50 12
<br />STD DTL 405
<br />IE(S
<br />)=565.00 6"
<br />STA 11+00.0
<br />RIM=574.8
<br />O.F.=572.50
<br />IE(W)=567.00 12"
<br />IE(S)=565.10 12"
<br />co
<br />co
<br />^ co
<br />EX. GRADE AT
<br />DETENTION
<br />OUTLET
<br />10+00 11+00 11+50
<br />DETENTION OUTLET PROFILE
<br />SCALE: HORZ: 1"=40'
<br />VERT: 1"=4'
<br />/
<br />/ o
<br />/ o
<br />I >c
<br />w
<br />o N89'1�
<br />-- 40.1
<br />i INSTALL NEW CONCRETE_
<br />CURB AND SIDEWALK
<br />PER C.O.E. STD DTL 312
<br />INSTALL NEW 28' WIDE
<br />DRIVEWAY CUT PER
<br />C.O.E. STD DTL 317
<br />STA, 0+50
<br />UTILITY TR NCH PER
<br />C.O.E. STD DTL 614
<br />PAVEMENT PATCH PER '
<br />C.O.E. STD. DTL -326
<br />IIE OUr(�)�565.83'
<br />EX CB
<br />RIM=573.64'
<br />IE 12" DIP(W)=571.58'
<br />SCALE: 1" = 20'
<br />0 20 40
<br />TAX# 00869400000400
<br />TAX# 00869400000300
<br />INSTALL WHEEL STOP OR EXTRUDED CURB
<br />AT END OF PARKING STALLS (TYPICAL)
<br />SHARED DRIVEWAY AREA FOR UNITS
<br />6 & 7 ACCESS ONLY ALONG WITH
<br />EASEMENT FOR GUEST PARKING.
<br />SHARED DRIVEWAY SURFACE SHALL
<br />O? DIFFER FROM MAIN DRIVE AISLE
<br />m SURFACING TO VISUALLY DELINEATE
<br />BETWEEN COMMON ACCESS AND
<br />SHARED UNIT ACCESS.
<br />BLADDER DOWN TO LOWER \
<br />o LANDSCAPING FOR MAINTENANCE.
<br />Z LOCKING GATE IN FENCE AT TOP OF
<br />WALL. 5'x5' CONC. PAD AT BOTTOM.
<br />\ TAX# 00869400000200
<br />`DAYLIGHT STORMTANK & WALL
<br />FOOTING DRAIN AT BASE OF WALL.
<br />INSTALL EXTRUDED CURB OR EQUAL
<br />\, AT END OF SHARED DRIVEWAY. SEE
<br />C.O.E. STD. DTL 310.
<br />INSTALL WOaD FENCE WITH STEEL
<br />1 POST AND RAILS AT TOP OF WALL
<br />TAX# 00869400000100
<br />5OLF DISPERSION TRENCH
<br />FOR DETENTION OUTLET.
<br />SEE DETAIL, SHEET 4.
<br />HARDSCAPE AREA TABLE:
<br />DEVELOPED SITE
<br />*NEW ACCESS & WALKWAYS
<br />4,484 SF.
<br />*GUEST PARKING STALL
<br />132 OF.
<br />NEW ROOF AREA
<br />10 644 OF.
<br />TOTAL NEW/REPLACED
<br />15,260 SF.
<br />DEVELOPED FRONTAGE
<br />NEW CURB, SIDEWALK, DWY CUT
<br />950 SF.
<br />TOTAL NEW/REPLACED HARDSCAPE
<br />16,210 OF.
<br />TOTAL POLLUTION GENERATING
<br />4,967 SF.
<br />*NOTE: DOES NOT COUNT AREAS BELOW ROOF EAVES
<br />
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