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SURFACE WATER DRAINAGE NOTES AND SPECIFICATIONS
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1. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE -CONSTRUCTION
MEETING MUST BE HELD WITH THE CITY OF RENTON PLAN REVIEWER.
2. ALL CONSTRUCTION SHALL BE IN ACCORDANCE WITH THE 1996 STANDARD SPECIFICATIONS
FOR ROAD, BRIDGE AND MUNICIPAL CONSTRUCTION PREPARED BY WSDOT AND THE AMERICAN
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PUBLIC WORKS ASSOCIATION (APWA), AS AMENDED BY THE CITY OF RENTON PUBLIC WORKS
DEPARTMENT.
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3. THE SURFACE WATER DRAINAGE SYSTEM SHALL BE CONSTRUCTED ACCORDING TO THE �
APPROVED PLANS, WHICH ARE ON FILE IN THE PUBLIC WORKS DEPARTMENT. ANY DEVIATION
FROM THE APPROVED PLANS WILL REQUIRE WRITTEN APPROVAL FROM THE CITY OF RENTON
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PUBLIC WORKS DEPARTMENT, SURFACE WATER UTILITY SECTION.
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4. A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION
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IS IN PROGRESS.
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5. DATUM SHALL BE NAVD 88 UNLESS OTHERWISE APPROVED BY THE CITY OF RENTON PUBLIC
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WORKS DEPARTMENT. REFERENCE BENCHMARK AND ELEVATIONS ARE NOTED ON THE PLANS.
6. ALL SEDIMENTATION/EROSION FACILITIES MUST BE IN OPERATION PRIOR TO CLEARING AND
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BUILDING CONSTRUCTION, AND THEY MUST BE SATISFACTORILY MAINTAINED UNTIL CONSTRUCTION
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IS COMPLETED AND THE POTENTIAL FOR ON -SITE EROSION HAS PASSED.
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7. ALL RETENTION/DETENTION FACILITIES MUST BE INSTALLED AND IN OPERATION PRIOR TO OR
IN CONJUNCTION WITH ALL CONSTRUCTION ACTIVITY UNLESS OTHERWISE APPROVED BY THE
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PUBLIC WORKS DEPARTMENT, SURFACE WATER UTILITY SECTION.
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8. GRASS SEED MAY BE APPLIED BY HYDROSEEDING. THE GRASS SEED MIXTURE, OTHER THAN
CITY OF RENTON APPROVED STANDARD MIXES, SHALL BE SUBMITTED BY A LANDSCAPE
ARCHITECT AND APPROVED BY THE PUBLIC WORKS DEPARTMENT, SURFACE WATER UTILITY
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SECTION.
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9. ALL PIPE AND APPURTENANCES SHALL BE LAID ON A PROPERLY PREPARED FOUNDATION IN
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ACCORDANCE WITH SECTION 7-02.3(1) OF THE CURRENT STATE OF WASHINGTON STANDARD
SPECIFICATION FOR ROAD AND BRIDGE CONSTRUCTION. THIS SHALL INCLUDE NECESSARY
LEVELING OF THE TRENCH BOTTOM OR THE TOP OF THE FOUNDATION MATERIAL, AS WELL AS
PLACEMENT AND COMPACTION OF REQUIRED BEDDING MATERIAL, TO UNIFORM GRADE SO THAT
THE ENTIRE LENGTH OF THE PIPE WILL BE SUPPORTED ON A UNIFORMLY DENSE, UNYIELDING
BASE. ALL PIPE BEDDING SHALL BE APWA CLASS "C", WITH THE EXCEPTION OF PVC PIPE. ALL
TRENCH BACKFILL SHALL BE COMPACTED TO MINIMUM 95% FOR PAVEMENT AND STRUCTURAL
FILL AND 90% OTHERWISE PER ASTM D-1557-70. PEA GRAVEL BEDDING SHALL BE 6 INCHES
OVER AND UNDER PVC PIPE.
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10, GALVANIZED STEEL PIPE AND ALUMINIZED STEEL PIPE FOR ALL DRAINAGE FACILITIES SHALL
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HAVE ASPHALT TREATMENT #1 OR BETTER INSIDE AND OUTSIDE.
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11, STRUCTURES SHALL NOT BE PERMITTED WITHIN 10 FEET OF THE SPRING LINE OF ANY STORM
DRAINAGE PIPE, OR 15 FEET FROM THE TOP OF ANY CHANNEL BANK.
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12. ALL CATCH BASIN GRATES SHALL BE DEPRESSED 0.10 FEET BELOW PAVEMENT LEVEL.
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13. OPEN CUT ROAD CROSSINGS THROUGH EXISTING PUBLIC RIGHT OF WAY WILL NOT BE
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ALLOWED UNLESS SPECIFICALLY APPROVED BY CITY OF RENTON PLANNING/BUILDING/PUBLIC
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WORKS ADMINISTRATOR.
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14. ROCK FOR EROSION PROTECTION OF ROADSIDE DITCHES, WHERE REQUIRED, SHALL BE OF
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SOUND QUARRY ROCK PLACED TO A DEPTH OF ONE (1) FOOT AND MUST MEET THE FOLLOWING
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SPECIFICATIONS:
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- 8 INCH ROCK / 40 - 70% PASSING;
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2 - 4 INCH ROCK / 30 - 40% PASSING; AND
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LESS THAN 2 INCH ROCK / 10 - 20% PASSING.
15. ALL BUILDING DOWNSPOUTS AND FOOTING DRAINS SHALL BE CONNECTED TO THE STORM
DRAINAGE SYSTEM, UNLESS APPROVED BY THE CITY PLAN REVIEWER OR SURFACE WATER UTILITY
SECTION. AN ACCURATELY DIMENSIONED, CERTIFIED AS -BUILT DRAWING OF THIS DRAINAGE
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SYSTEM WILL BE SUBMITTED TO THE CITY UPON COMPLETION.
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16. ISSUANCE OF THE BUILDING OR CONSTRUCTION PERMITS BY THE CITY OF RENTON DOES NOT
RELIEVE THE OWNER OF THE CONTINUING LEGAL OBLIGATION AND/OR LIABILITY CONNECTED WITH
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STORM SURFACE WATER DISPOSITION. FURTHER, THE CITY OF RENTON DOES NOT ACCEPT ANY
OBLIGATION FOR THE PROPER FUNCTIONING AND MAINTENANCE OF THE SYSTEM PROVIDED
DURING CONSTRUCTION.
17. THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUATE SAFEGUARD, SAFETY
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DEVICES, PROTECTIVE EQUIPMENT, FLAGGERS, AND ANY OTHER NEEDED ACTIONS TO PROTECT
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THE LIFE, HEALTH, AND SAFETY OF THE PUBLIC, AND TO PROTECT PROPERTY IN CONNECTION
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WITH THE PERFORMANCE OF WORK COVERED BY THE CONTRACT. ANY WORK WITHIN THE
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TRAVELED RIGHT OF WAY THAT MAY INTERRUPT NORMAL TRAFFIC FLOW SHALL REQUIRE A
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TRAFFIC CONTROL PLAN APPROVE BY THE PUBLIC WORKS DEPARTMENT, TRANSPORTATION
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SYSTEMS DIVISION. ALL SECTIONS OF THE WSDOT STANDARD SPECIFICATIONS 1-07-23 TRAFFIC
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CONTROL SHALL APPLY.
18. SPECIAL DRAINAGE MEASURES WILL BE REQUIRED IF THE PROJECT LOCATION IS WITHIN THE
AQUIFER PROTECTION AREA (APA).
19. BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY OCCURS, A PRE -CONSTRUCTION
MEETING MUST BE HELD WITH THE CITY OF RENTON, PUBLIC WORKS DESIGN ENGINEER.
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20. ALL LIMITS OF CLEARING AND AREAS OF VEGETATION PRESERVATION AS PRESCRIBED ON THE
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PLAN(S) SHALL BE CLEARLY FLAGGED IN THE FIELD AND OBSERVED DURING CONSTRUCTION.
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21. ALL REQUIRED SEDIMENTATION/EROSION CONTROL FACILITIES MUST BE CONSTRUCTED AND IN
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OPERATION PRIOR TO LAND CLEARING AND/OR CONSTRUCTION TO ENSURE THAT SEDIMENT
LADEN WATER DOES NOT ENTER THE NATURAL DRAINAGE SYSTEM. ALL EROSION AND SEDIMENT
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FACILITIES SHALL BE MAINTAINED IN A SATISFACTORY CONDITION UNTIL SUCH TIME THAT
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CLEARING AND/OR CONSTRUCTION IS COMPLETE AND POTENTIAL FOR ON -SITE EROSION HAS
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PASSED. THE IMPLEMENTATION, MAINTENANCE, REPLACEMENT AND ADDITIONS TO
EROSION/SEDIMENTATION CONTROL SYSTEMS SHALL BE THE RESPONSIBILITY OF THE PERMITEE.
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22. THE EROSION AND SEDIMENTATION CONTROL SYSTEMS DEPICTED ON THIS DRAWING ARE
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INTENDED TO BE MINIMUM REQUIREMENTS TO MEET ANTICIPATED SITE CONDITIONS. AS
CONSTRUCTION PROGRESSES AND UNEXPECTED OR SEASONAL CONDITIONS DICTATE, THE
PERMITEE SHALL ANTICIPATE THAT MORE EROSION AND SEDIMENTATION CONTROL FACILITIES WILL
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BE NECESSARY TO ENSURE COMPLETE SILTATION CONTROL ON THE PROPOSED SITE. DURING
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THE COURSE OF CONSTRUCTION, IT SHALL BE THE OBLIGATION AND RESPONSIBILITY OF THE
PERMITEE TO ADDRESS ANY NEW CONDITIONS THAT MAY BE CREATED BY THE ACTIVITIES AND TO
PROVIDE ADDITIONAL FACILITIES, OVER AND ABOVE MINIMUM REQUIREMENTS, AS MAY BE NEEDED,
TO PROTECT ADJACENT PROPERTIES AND WATER QUALITY OF THE RECEIVING DRAINAGE SYSTEM.
23. APPROVAL OF THIS PLAN IS FOR EROSION/SEDIMENTATION CONTROL ONLY. IT DOES NOT
CONSTITUTE AN APPROVAL OF STORM DRAINAGE DESIGN, SIZE NOR LOCATION OF PIPES,
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RESTRICTORS, CHANNELS, OR RETENTION FACILITIES.
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24. DURING THE TIME PERIOD OF OCTOBER 1ST THROUGH APRIL 30TH, ALL PROJECT DISTRIBUTED
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SOIL AREAS GREATER THAN 5,000 SQUARE FEET, THAT ARE TO BE LEFT UN -WORKED FOR MORE
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THAN 12 HOURS, SHALL BE COVERED BY MULCH, SODDING OR PLASTIC COVERING.
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25. IN ANY AREA WHICH HAS BEEN STRIPPED OF VEGETATION AND WHERE NO FURTHER WORK IS
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ANTICIPATED FOR A PERIOD 30 DAYS OR MORE, ALL DISTURBED AREAS MUST BE IMMEDIATELY
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STABILIZED WITH MULCHING, GRASS PLANTING OR OTHER APPROVED EROSION CONTROL
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TREATMENT APPLICABLE TO THE TIME OF YEAR. GRASS SEEDING ALONE WILL BE ACCEPTABLE
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ONLY DURING THE MONTHS OF APRIL THROUGH SEPTEMBER, INCLUSIVE. SEEDING MAY PROCEED,
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HOWEVER, WHENEVER IT IS IN THE INTEREST OF THE PERMITEE, BUT MUST BE AUGMENTED WITH
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MULCHING, NETTING OR OTHER TREATMENT APPROVED BY THE CITY OF RENTON, OUTSIDE THE
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SPECIFIED TIME PERIOD.
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26. FOR ALL EROSION/SEDIMENTATION CONTROL PONDS WHERE THE DEAD STORAGE DEPTH
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EXCEEDS 6 INCHES, A FENCE IS REQUIRED WITH A MINIMUM HEIGHT OF THREE (3) FEET, 3:1
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SIDE SLOPES.
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27. A TEMPORARY GRAVEL CONSTRUCTION ENTRANCE, 24 FEET X 50 FEET X 8 INCHES OF 4 TO
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6 INCH QUARRY SPALLS SHALL BE LOCATED AT ALL POINTS OF VEHICULAR INGRESS AND
EGRESS TO THE CONSTRUCTION SITE.
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PORTION OF THE N.W. 1/4, OF SEC. 32, TWN 24 N., RGE 5 E., W.M.
CITY OF RENTON, WASHINGTON haw-9�«9,�
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NOTES:
1. DUMMY JOINTS SHALL BE PLACED NOT TO
EXCEED 15' C/C NOR LESS THAN 10' C/C.
THEY SHALL NOT BE LESS THAN 3/16" IN
THICKNESS AND SHALL BE 2-1/4" DEEP.
2. 1/2" THRU JOINTS SHALL BE PLACED AT
BACK, SIDES AND FRONT (BEHIND CURB) OF
APPROACH, AND IN CURB/GUTTER TO DUMMY
JOINTS.
CURBCUT DETAIL
L 10" COMMERCIAL
ZONE 6"
RESIDENTIAL ZONE
THICKENED BASE OF
CURB & GUTTER TO
MATCH APPROACH
THICKNESS ON
COMMERCIAL
APPROACHES. (TYP)
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STA. 1 +9 LT
CB TYPE II-72"
RIM 9-3. I)NG�G�RAj�F�
INV=84.56 (12"e9emW)t(•��
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/
• " , .. � pRNgTE
. DRAINAGE
RAINAG E
/ EASEMENT
1 ' SD':.. /
• STA. 1+82, 61T
i CB# 3, TYPE II-7
W/ LOCKING -GRATE
RIM=SB:B@- ��•�3
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6.4' SUMP
-SEE DETAIL j
PRIVATE`
• 'EASEMENT
12' GRAVEL
ACCESS ROAD
CAD 15% MAX.
STORMWATER FACILITY DETAIL
1"=10 FEET
FILTER FABRIC, TYP.
96" DIA. CMP
PERFORATED
INFILTRATION
TANK 7
1 1/2"-3"
WASHED ROCK INV=81.00 MIN.
\_ 12" MIN.
16'
-NATIVE SOIL
INFILTRATION TANK SECTION
N.T.S.
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1/2"X4" EXPANSION MATERIAL
1 /4"R AT JOINTS
SCORE LINES TO BE RADIAL
TO CURB AND GUTTER
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1 /2"X4" EXPANSION MATERIAL
1/4"R AT JOINTS
"W"-WIDTH OF SIDEWALK
1 /4"/FT. SLOPE
1/2"R,
4"
/NLET
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STANDARD GALVANIZED STEEL
LADDER/'STEPS
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36" DIA.
CMP CONNECTO PIPE
(TYP.'
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INV=&I. 0
4' MIN.
2' MAX.
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2' MAX.
I 96 16 GA. CMP
W/TREATMENT 1 OR
BETTER, OR PER
MANUFACTURERS
SPECIFICATIONS
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47'-96" INFILTRATION TANK
INV= 8i.56
pe' 1" DRILLED OR CUT PERFORATIONS
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RIM=91.99�
36" DIA.
CMP CONNECTOR PIPE
(TYP.)
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LADDER OR
N STEPS
INV=
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SPACED 18 O.C.
ON BOTH SIDES OF TANK.
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60" DIA
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NOTES:
1. ALL METAL PARTS CORROSION RESISTANT. STEEL PARTS
CB 5 TYPE
II-60"
ALUMINIZED TYPE 2 OR ASPHALT COATED (TREATMENT 1 OR BETTER)
/ 72" DIA
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N.T.S.
2. FRAME AND LADDER OR STEPS OFFSET SO CLIMB -DOWN SPACE IS
CLEAR OF RISER AND SHEAR GATE.
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CB 4 TYPE
II-72"
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PERFORATED PIPE INFILTRATION TANK DETAIL
N.T.S.
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6.4' MIN,
4
OUTLET
5'
j 2-1/2" +
11-1 /2'J
42" MAX
24" MIN
8" FOR ALL ARTERIALS
STD 90' BRACKET OR 360'
ADJUSTABLE BRACKET IF
REQUIRED.
PIPE CAP
2" GALVANIZED 2' MIN
STEEL PIPE CLEARANCE FROM
FACE OF CURB.
10' MIN
CLEARANCE IF
NO CURB
10'
1 1
CEMENT
1-1/2' CONCRETE
CLASS 'B' `
CEM. CONC. CURB AND GUTTER
3'
GENERAL NOTES: 5/8tn
1-1/2' MINUS
JOINTS: DUMMY JOINTS SHALL BE PLACED NOT TO EXCEED 15' C/C NOR LESS CRUSHED
THAN 10' C/C. THEY SHALL NOT BE LESS THAN 3/16" IN THICKNESS AND SHALL ROCK
BE EXTENDED 2" BELOW THE GUTTER LINE. 1 /2" THRU JOINTS SHALL BE PLACED
AT ALL TE. OLD JOINTS AS DIRECTED BY ENGINEER AND SHALL EXTEND 1" BELOW GROUND MOUNTED STREET NAME SIGNS
B WHERE THE SIDEWALK IS TO BE PLACED AGAINST THE CURB AND GUTTER, THE µ •��
JOINT SHALL BE A COLD JOINT. 1 /2"X 5" EXPANSION MATERIAL SHALL BE PLACED
FROM P.C.'S TO P.T.'S AT ALL CURB RETURNS. 1 /2"X4" EXPANSION MATERIAL
SHALL BE PLACED AT EVERY FOURTH SIDEWALK PANEL. THE CONCRETE MIX FOR
SIDEWALKS SHALL CONFORM TO THE REQUIREMENTS OF CLASS B (3/4") WITH AIR
ENTRAINMENT.
THE CONCRETE SHALL HAVE A BROOM FINISH WITH ALL EDGES HAVING A 2 1 /2"
TOOLED FINISH.
1/2"X5" EXPANSION MATERIAL SUBGRADE COMPACTION SHALL BE 90% (MODIFIED PROCTOR).
CURB RETURN ONLY ,f WAS,��j`���
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7 1 /2"R 1 /4"/FT. SLOPEC
" �, AVOID CUTTING UNDERGROUND
/ .7 UTILITY LINES. IT'S COSTLY
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' 1 2"R PAVEMENT AS PER PLANS nf �'
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PAVEMENT AS PER PLANS C,r. N ��.,
PARKWAY STANDARD CEM. CONC. �� T"`'� RF
STANDARD CEM. CONC. 4" A.T.B. a�-� ��XiTIMG I,�� n
CURB AND GUTTER CURB AND GUTTER IE9-''fiya� OF THIS D198
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SECTION A -A SECTION B-B
1-800-424-5555
TYPICAL SIDEWALK UNDERGROUND SERVICE (USA)
1 /2"X4" EXPANSION
MATERIAL
1 /4"R AT JOINTS
SCORE LINES
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72" DIA
CB 2 & 3 TYPE II-72"
NTS
1. 1' 1' 2.5' 1' 1'
MIN IMIN F MIN MINIMIN
2" CLASS 'B' VACP CLASS 'E' OR 'B'
6" CRUSHED
SURFACING TOP COURSE
CRUSHED ROCK,
FLOWABLE FILL
OR
AS REQUIRED BY ENGINEER
1' 1' 2.5'
MIN MIN MIN I MIN MIN
2" CLASS 'B'-/ X
FACE OF CURB OR
EDGE OF PAVEMENT
*2" TO 6"
CLASS 'E' CENTER LINE OR
OR LANE LINE
CLASS 'B'
6.5' MIN.
2" DEPTH OF
GRIND OR SAWCUT AND REMOVE
TYPICAL PATCH FOR FLEXIBLE PAVEMENT
WHEN PERPENDICULAR TO
ROADWAY CENTERLINE
RECOMMENDED
FOR APPROVAL
BY
BY
B
CHECKED FOR COMPLIANCE
TO CITY STANDARDS
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DATE
DATE
r j0 SCANNED OCT 2 7 2006 `'" SCANNED 0 12006
EXPIRES 11