STF20150003DNS and SEPA Checklist.pdf
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COVER SHEET
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
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IMPACT DEVELOPMENT STORMWATER
INFRASTRUCTURE IMPROVEMENTS
105TH/106TH AVENUES WEST LOW
CITY OF EDMONDS
VICINITY MAP
N.T.S.
N
N
EVERETT
LOCATION MAP
SEATTLE
EDMONDS
BELLINGHAM
TACOMA
CANADA
USA
N.T.S.
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GENERAL NOTES
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
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TOPOGRAPHIC SURVEY
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
014
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130 2ND AVENUE S.
10420
10419
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10431
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52622
13622
22703
22719
22729
22711
22901
22606
21722
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422722
622
22704
22720
22630
22616
22624
22630
22623
51622
22631
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22615
22623
2271122729
22719
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TESC 228TH STREET SOUTHWEST
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
40
SCALE IN FEET
20
0
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MATCHLINE - SEE SHEET TS1.2
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SEE NOTE 1
22729
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22901
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F
CONSTRUCTION ENTRANCE
SEE NOTE 1
F
F
TEMPORARY
22728
F
20 LF WATTLE 00
+5
F
F
270 LF SILT FENCING
F
O
F
F
228TH ST SW
20 LF WATTLE
F
F
00+4
O
INLET PROTECTION, TYP
F
40 LF SILT FENCING
F
CATCH BASIN
20 LF WATTLE
22729
F
F
F
F
F
O
0
0
0
6
00+3+
+
0
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O
O1
F
F
MATCHLINE - SEE SHEET TS1.1
AS NEEDED AND MAINTAIN ACCESS TO DRIVEWAYS.
F
DIFFERENT, CONTRACTOR MAY ADD SILT FENCES
SURROUNDING GRADE IS AT HIGHER ELEVATION
CATCH BASIN INLET PROTECTION
20 LF WATTLE
F
50 LF SILT FENCING
THAN ROAD. IF CONDITIONS FOUND TO BE
F
WATTLE
20 LF
F
F
0
4
F 7
2
SILT FENCE
F 2
O
WATTLE
F
90 LF SILT
FENCING
F
F
70 LF SILT FENCING
F
O
F
O
20 LF WATTLE
1.
00+2
22740
22724
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TESC 106TH AVE W
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
40
SCALE IN FEET
20
0
R
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106TH AVE W
AS NEEDED AND MAINTAIN ACCESS TO DRIVEWAYS.
DIFFERENT, CONTRACTOR MAY ADD SILT FENCES
SURROUNDING GRADE IS AT HIGHER ELEVATION
CATCH BASIN INLET PROTECTION
THAN ROAD. IF CONDITIONS FOUND TO BE
SILT FENCE
WATTLE
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TESC 105TH AVE W
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
40
SCALE IN FEET
20
0
R
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105TH AVE W
AS NEEDED AND MAINTAIN ACCESS TO DRIVEWAYS.
DIFFERENT, CONTRACTOR MAY ADD SILT FENCES
CATCH BASIN INLET PROTECTIONSURROUNDING GRADE IS AT HIGHER ELEVATION
THAN ROAD. IF CONDITIONS FOUND TO BE
SILT FENCE
WATTLE
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TESC NOTES & DETAILS
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
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ISOMETRIC VIEW
CATCH BASIN INLET PROTECTION
STOCKPILE COVER
NO SCALE
NO SCALE
5
4
SECTION VIEW
MAXIMUM SPACING
BMP SPACING TABLE
10'20'30'40'
WATTLE INSTALLATION
SLOPE (H:V)
CONSTRUCTION ENTRANCE
SECTION A-A
2' MIN12" MIN
1:13:14:1
2:1
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5
1
SILT FENCING
NO SCALENO SCALE
NO SCALE
23
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A
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1
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N
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4" MAX.
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3" MIN.
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DETAIL
ELEVATION
A
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M "5
.XA
SURFACE
GROUND
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228TH STREET SOUTHWEST
STORM DRAINAGE PLAN & PROFILE
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
0000
++66
2852802752702652602552502452405+80
22901
IE 267.57 12" PVC (W)
5+60
IE 269.57 12" PVC (S)
SEE SHEET SD1.2
IE 269.57 12" PVC (N)
0
RIM 280.57
0
0
6
+
+
0
9 E 1261791.90
2
1
10LF 12" PVC
S=3.70%
N 292816.89
RIM: 280.33
5+40
SDMH-5 WATER QUALITY 48"
SD C.O.
INFILTRATION GALLERY
GRAVEL TRENCH BED
5+20
INFILTRATION GALLERY
GRAVEL TRENCH BED
5+00
BOTTOM ELV: 264'
TOP ELV: 271'
00
+5
'
5
'5
4+80
'
51'
0
4
1
PERF PIPE
4+60
4+40
SD C.O.
IE 267.70 12" PVC (W)
IE 267.20 12" PVC (E)
RIM 277.02
4+20
E 1261646.70
N 292810.23
40
OVERFLOW STRUCTURE
ELV: 270.48'
SDMH-4 TYPE-2 54"
4+00
SCALE IN FEET
CLEANOUT STRUCTURE
20
00+4
(TYP, 5 PLACES)
3+80
REMOVE EX PIPE & CB
(SEE SHT NO. SD1.1)
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P
3+60
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"
6
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1
6
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3+40
PLUG PIPE
IE 261.03 12" PVC (E)
228TH ST SW
IE 261.03 12" PVC (N)
3+20
RIM 274.69
Horizontal Scale in Feet: 1"=20'
Vertical Scale in Feet: 1"=5'
E 1261546.85
N 292812.63
SDMH-3 TYPE-1 48"
3+00
(PLUG)
SEE SHEET SD1.1
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6
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228TH STREET SW
2+60
2+40
0
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2+20
265LF 12" PVC
S=0.50%
2+00
00+2
1+80
22740
1+60
22724
1+40
1+20
EXISTING SURFACE
1+00
IE 257.70 20" CONC (W)
22807
EX SDMH-1 TYPE-2 48"IE 257.65 20" CONC (E)
IE 257.65 12" PVC (N)
IE 257.74 12" PVC (E)IE 257.73 12" PVC (S)
SDMH-2 TYPE-1 48"
00+
1
0+80
RIM 264.31RIM 263.10
S=0.50%
0+60
0+40
0+20
285280275270265260255250245240
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106TH AVE W
STORM DRAINAGE PLAN & PROFILE
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
R
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280275270265260255250245240
14+00
IE 265.28 12" PVC (NE)
IE 265.53 12" PVC (W)
13+80
IE 265.28 12" PVC (S)
RIM 269.98
E 1261551.90
N 293200.0621LF 12" PVC
S=13.03%
IE 268.33 6" PLASTIC (W)
EX CB-6 TYPE-1
13+60
IE 268.33 12" PVC (E)
EX CB-5 TYPE-1
C
V
P%
RIM 269.83
13+40
0
"
25
1
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0
=
F
S
L
2
6
13+20
IE 264.97 12" PVC (N)
IE 264.97 12" PVC (S)
RIM 270.54
SDMH-9 TYPE-1 48"
13+00
12+80
EXISTING SURFACE
12+60
12+40
40
12+20
SCALE IN FEET
STORM DRAIN PROFILE 106TH AVE W
20
12+00
Horizontal Scale in Feet: 1"=20'
C
Vertical Scale in Feet: 1"=5'
V
0
P
%
"
0
2
5
1
106TH AVE W
.
0
11+80
F=
S
L
6
4
2
11+60
11+40
11+20
11+00
10+80
IE 263.74 12" PVC (N)
IE 263.74 12" PVC (S)
RIM 274.70
10+60
SDMH-8 TYPE-1 48"
IE 266.49 12" PVC (W)
IE 263.49 12" PVC (N)
IE 263.45 12" PVC (S)
IE 269.77 12" PVC (E)
SDMH-7 TYPE-1 48"
12LF 12" PVC
18LF 12" PVC
C
S=0.50%
V
CB-4 TYPE-1
P%S=18.26%
10+40
12LF 8" CONCRIM 274.81
RIM 274.77
0
"
25
1.
0
=
F
S
S=1.69%L
0
5
10+20
10+00
11LF 12" PVC
S=53.42%
SDMH-6 WATER QUALITY 48"
IE 272.09 8" CONC (N)
IE 269.50 12" PVC (W)
IE 269.50 12" PVC (S)
IE 261.03 12" PVC (E)
17LF 12" PVC
S=2.11%
IE 261.03 12" PVC (N)
RIM 274.69
IE 263.39 12" PVC (N)
IE 263.39 12" PVC (E)IE 261.39 12" PVC (S)
CB-2 TYPE-1 9+80
SDMH-3 TYPE-1 48"
26LF 12" PVC
S=0.50%
RIM 274.54
IE 269.63 12" PVC (N)
RIM 274.81
CB-1 TYPE-1
9+60
RIM 273.93
280275270265260255250245240
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105TH AVE W
STORM DRAINAGE PLAN & PROFILE
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
285280275270265260255250245
Elevation in ft (NAVD88)
25+20
24LF 12" PVC
S=0.50%
IE 272.60 12" PVC (S)
25+00
RIM 275.24
E 1261798.78
N 293312.25
(TO BE PLUGGED)
(TO BE PLUGGED)
EX CB-11 TYPE-1
24+80
R
IE 272.74 12" PVC (NW)
Know what's
RIM 275.04
24+60
E 1261829.34
8LF 12" PVC
25LF 12" PVCS=0.63%IE 272.08 12" CONC (S)
S=0.50%
IE 272.61 12" PVC (SE)
IE 273.07 12" PVC (W)
IE 272.03 12" PVC (W)
IE 272.48 12" PVC (N)
IE 272.08 12" PVC (E)
IE 271.93 12" PVC (S)
N 293277.45
SDMH-12 TYPE-1 48"
EX CB-10 TYPE-1
CB-9 TYPE-2 54"
24+40
RIM 275.03
RIM 275.56
24+20
EXISTING SURFACE
24+00
23+80
C
V
P
%
"
0
2
5
1
.
0
F=
S
L
23+60
3
9
1
23+40
23+20
23+00
IE 270.97 12" PVC (N)
IE 270.97 12" PVC (S)
RIM 281.01
22+80
40
E 1261796.22
N 293095.89
STORM DRAIN PROFILE 105TH AVE W
SDMH-11 TYPE-1 48"
SCALE IN FEET
22+60
20
Horizontal Scale in Feet: 1"=20'
Vertical Scale in Feet: 1"=5'
22+40
0
105TH AVE W
22+20
22+00
21+80
21+60
C
V
P
%
"
0
2
5
1
.
0
21+40
F=
S
L
4
5
2
21+20
21+00
20+80
IE 276.34 12" PVC (W)
IE 269.70 12" PVC (N)
IE 269.70 12" PVC (S)IE 271.78 12" PVC (E)
SDMH-10 TYPE-1 48"
20+60
25LF 12" PVC
SDMH-5 WATER QUALITY 48"
CB-8 TYPE-1
S=18.54%RIM 280.67
RIM 280.63
25LF 12" PVC
20+40
IE 267.57 12" PVC (W)
IE 269.57 12" PVC (N)
IE 269.57 12" PVC (S)
S=0.50%
20+20
RIM 280.57
20+00
19LF 12" PVC
S=29.11%
19+80
IE 275.00 12" PVC (N)
RIM 279.99
E 1261791.53
19+60
N 292798.24
CB-7 TYPE-1
285280275270265260255250245
Elevation in ft (NAVD88)
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DETAILS
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
THE MAXIMUM DEPTH FROM THE FINISHED GRADE TO THE LOWEST PIPE INVERT SHALL
SECTION, FIBERS (PLACED ACCORDING TO THE STANDARD SPECIFICATIONS), OR WIREGAP BETWEEN THE KNOCKOUT WALL AND THE OUTSIDE OF THE PIPE. AFTER THE PIPE
THE PRECAST BASE SECTION MAY HAVE A ROUNDED FLOOR, AND THE WALLS MAY BE
ALL PICKUP HOLES SHALL BE GROUTED FULL AFTER THE BASIN HAS BEEN PLACED.
HAVE A WALL THICKNESS OF 2" MINIMUM TO 2.5" MAXIMUM. PROVIDE A 1.5" MINIMUM
IS INSTALLED, FILL THE GAP WITH JOINT MORTAR IN ACCORDANCE WITH STANDARD
MESH HAVING A MINIMUM AREA OF 0.12 SQUARE INCHES PER FOOT SHALL BE USEDWITH THE MINIMUM REQUIRED REBAR SHOWN IN THE ALTERNATIVE PRECAST BASE
THE KNOCKOUT DIAMETER SHALL NOT BE GREATER THAN 20". KNOCKOUTS SHALL
THE OPENING SHALL BE MEASURED AT THE TOP OF THE PRECAST BASE SECTION.
130 2ND AVENUE S.
THE FRAME AND GRATE MAY BE INSTALLED WITH FLANGE DOWN, OR INTEGRALLY
AS ACCEPTABLE ALTERNATIVES TO THE REBAR SHOWN IN THE PRECAST BASE
SECTION. WIRE MESH SHALL NOT BE PLACED IN THE KNOCKOUTS.
CAST INTO THE ADJUSTMENT SECTION WITH FLANGE UP.
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SLOPED AT A RATE OF 1:24 OR STEEPER.
THE RECTANGULAR FRAME AND GRATE MAY BE INSTALLED WITH THE FLANGE UP OR DOWN. THE FRAME MAY BE CAST INTO THE ADJUSTMENT SECTION.
KNOCKOUTS SHALL HAVE A WALL THICKNESS OF 2" MINIMUM TO 2.5" MAXIMUM. PROVIDE A 1.5" MINIMUM GAP BETWEEN THE KNOCKOUT WALL AND THE
Know what's
OUTSIDE OF THE PIPE. AFTER THE PIPE IS INSTALLED, FILL THE GAP WITH JOINT MORTAR IN ACCORDANCE WITH STANDARD SPECIFICATION 9-04.3.
SPECIFICATION 9-04.3.
BE 5'.
NOTES
WSDOT STD PLN B-10.20-01 (NTS)
2.3.4.5.6.7.
1.CATCH BASIN TYPE 2
CATCH BASIN TYPE 1
WSDOT STD PLN B-5.20-01
THE BOTTOM OF THE PRECAST CATCH BASIN MAY BE SLOPED TO FACILITATE CLEANING.
5
4
NO STEPS ARE REQUIRED WHEN HEIGHT IS 4' OR LESS.
NOTES
1.2.3.4.
12" DIA HEADER PIPE
IE= 267.20'
12" SD CO
TOP ELEVATION = 271'
BOTTOM ELEVATION = 264'
ELV: = 270.48'
12" DIA 135 LF PERF PIPE
6" MINIMUM DEPTH SAND/AMENDED
TOP OF PAVEMENT
AT 0.00% SLOPE
FREE-DRAINING TOPSOIL
GRAVEL DRAIN ROCK
GRAVEL TRENCH INFILTRATION GALLERY SECTION
IE 267.20
1.5" TO 3" WASHED
GRAVEL TRENCH BED INFILTRATION GALLERY
WSDOT STD PLAN B-85.40-00 (NTS)
8" CLEAN-OUT
12" DIA (3) 135 LF PER/F PIPE
@ 0.00% SLOPE IE 267.20
TOP OF PAVEMENT
3
8" CO (SEE DETAIL 3, THIS SHEET)
(NTS)
AN 8" PIPE DIAMETER. CONTRACTOR SHALL OBTAIN AND
NTS
WSDOT STD PLAN B-85.40-00 (DISPLAYED HERE) IS FORADHERE TO SPECIFICATIONS FOR 12" PIPE DIAMETER.
2
1
ENCAPSULATING DRAIN
ROCK ON TOP & SIDES
GEOTEXTILE FABRIC
12" SD CO
NOTE
IE: = 267.70'
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DETAILS
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
INVERT OF DETENTION PIPE IN MANHOLE SHALL BE EQUAL TO OR HIGHER THANPRIVATELY-OWNED CONTROL STRUCTURES SHALL NOT BE PLACED IN THE CITY
* SPECIFIC DESIGN INFORMATION AS INDICATED ON APPROVED CONSTRUCTION
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THE INVERT OF THE OUTLET PIPE.
EL*
RIGHT-OF-WAY.
DRAWINGS.
NOTES
2.3.
1.
FLOW CONTROL STRUCTURE
City of Edmonds Dwg No. 5.4 (NTS)
(LENGTH, DIAMETER,MATERIAL TYPE)*
DETENTION PIPE
INVERT*
2
MIN
6"
OVERFLOW ELEV*
FINISHED GRADE
OUTLET PIPE
KNOCKOUTS SHALL HAVE A WALL THICKNESS OF 2" MINIMUM TO 2.5" MAXIMUM.
FOR PIPE ALLOWANCES, SEE STANDARD PLAN B-10.20.
NOTES
1.2.
WSDOT STD PLN B-15.20-01 (NTS)
MANHOLE TYPE 1
1
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DETAILS
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
CONTECH HYDRAULIC SHEAR PLATE TYPE 1
R
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NTS
2
CONTECH DROP BOWL ASSEMBLY TYPE 1
NTS
1
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DETAILS
IMPROVEMENTS
DEVELOPMENT STORMWATER INFRASTRUCTURE
105TH/106TH AVENUES WEST LOW IMPACT
(425) 778-0907, FAX (425) 778-6409
EDMONDS, WASHINGTON 98020
130 2ND AVENUE S.
CONTECH HYDRAULIC SHEAR PLATE TYPE 2
R
Know what's
NTS
2
CONTECH DROP BOWL ASSEMBLY TYPE 2
NTS
1