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DEPARTMENT OF PUBLIC WORKS
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DEPARTMENT OF PUBLIC WORKS
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1. USE 4" TO G QUARRY SPALLS OR CRL1544ED ROCK FOR 5URFi4 IKG
AS SHOWN. MATERIAL WiTI-J "FINES" 15 NOT ACCEPTABLE.
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w r tV 2. -ME E)O' MINI MUM LEMCa70 51-JALL BE LENG114F_WED AS
8-I -,,,� MECESSARY TO IMSURE iY1ATERIAL- is NOT TRACKTO TRACKED INTHE
W►Ld ---- - - _ei -- FLI&L-IC, RIGHT-OF-INAY.
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SILT FENCE
DATE I/87
SHEEN
3L" z3io" DIAMOND f'l_ATE DWR
TEMPORARY CONSTRUCTION ENTRANCE DATE
/67
S HEET
EROSION CONTROL NOTES
1.
All limits of clearing and areas of vegetation preservation as prescribed on the plan shall
be clearly flagged in the field and observed during construction.
2.
All required sedimentation/erosion control facilities must be constructed and in operation
prior to lond clearing and/or other construction to insured that sediment laden water does
not enter the natural drainage system. All erosion and sediment facilities shall be
maintained in a satisfactory condition until such time that clearing and/or construction is
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completed and potential for on -site erosion has passed. The implementation, maintenance,
replacement and additions to erosion/sedimentation control systems shall be the
responsibility of the permittee.
3.
The erosion and sedimentation control systems depicted on this drawing are intended to be
minimum requirements to meet anticipated site conditions. As construction progresses and
unexpected or seasonal conditions dictate, the permittee shall anticipate that more erosion
and sedimentation control facilities will be necessary to insured complete siltation control
on the proposed site. During the course of construction, it shall be the obligation and
responsibility of t'ie permittee to address any new conditions that may be created by his
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.
4.
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, restrictors, charnels, or
retention facilities.
5.
In any area which has been stripped of vegetation and where no further work is anticipated
for a period of 30 days or more, all disturbed areas must be immediately stabilized with
mulching, gross planting or other approved erosion control treatment applicable to the time
of year in question. Grass seeding alone will be acceptable only during the months of April.
through September inclusive. Seeding may proceed, however, whenever it is in the interest of
the permittee, but must be augmented with mulching, netting, or other treatment approved by
the City of Renton, outside the specified time period.
6.
For all erosion/sedimentation control ponds where the dead storage depth exceeds 6 inches, a
fence, a minimum of 3 feet high is required, with 3:1 side slopes.
7.
A temporary gravel construction entrance, 30, x 50, x 8" of 4- to 6- inch quarry spoils shall
be located at all points of vehicular ingress and egress to the construction site.
FRAME &. LADDER OfLSTEPS Z35.�>' ROUND SOLID COVER NOTES:
OFFSET. SEE NOTE 5. FRAME MARKED11DiiA►N"
$� COVER FLEVATION PCR PLAN, l WITH LOCKINCa BOLTS. 1. SEE SURFACE WATER MGMT. DIV. BULLETIN "MULTIPLE
IZ"501. SEEDW''i.S, No 49fi�50KCR5. ORIFICES" EFF. SEPT. 1, 1985.
-',F 7 y 2. PIPE SIZES AND SLOPES: PER PLANS.
.:.
OVER -FLOW ELEV. TO Z :v.'• :r 3. OUTLET CAPACITY: NOT LESS THAN COMBINED INLETS.
• .�•, • PRO V f DE OETENTiON
J & OIL SEPARATION °' � _ � 4. METAL PARTS: CORROSION RESISTANT. GALVANIZED
PEe PLAe-+s
0 PIPE PARTS TO HAVE ASPHALT TREATMENT 1.
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`J 5. FRAME A LADDER OR STEPS OFFSET SO
MAX. W.$ A. CLEANOUT GATE IS VISIBLE FROM TOP.
I STISNDAZD GALVANIZED B. CLIMB -DOWN SPACE IS CLEAR OF RISER AND
7, t STEEL LADDEZ/ 5TEP'S . CLEANOUT GATE .
SEE DWG. No 31.KC1Z5, C. FRAME IS CLEAR OF CURB.
6. IF METAL OUTLET PIPE CONNECTS TO CEMENT CONCRETE
v_ PIPE SUPPOP-T(S): PIPE: OUTLET PIPE TO HAVE SMOOTH O.D. EQUAL TO
3"X.0go r= CLEANOUT GATE: SHEAiZ CONCRETE PIPE I.D. LESS 1/4".
BOLTED OR- IMBEDDED GATE. ;'r GATE. SEE OWy• No
3/ SPACING. M NIN WALL AT' M Ax 1N� 2�� b 53 KCRS 7 AGLTON ONEISEDELOFWRI ER TO ASSURELOCATED
LADDERAS SHOWN OR
i :,,, �• ONE SUPPORT. CLEARANCE.
1' O"
I.D. Co'- d X 4' OX 5-8"
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!OUTLET PIPE
MF,SEE NOTE G INLET PIPE'
MWIMUM Z0 DAY C0MME55M',7) RCNGf1A=F'C,4-000 FIST. INVERT ELEV ;
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DESIC;GN If l ACCURDANGE W% i�10. 5Z �'v'O ''►.�iINIiJiU�Y'" RI1,lU!�?E.MEiJ is (NVE-ZT v. z PER PLAN .
FOR Tu1H 5ECTI01J W�A.57 COIJUZEi �1JIJ5i 1RUJION. PEE PLANS.
REIKIFORCEM ENT-7t 1 �n RESTRMTOR PLATE
® N REMOVABLE WATF.fl- ,
DEFORMED BARS IN J�U_02DANCE W/AST NI. API5 6 GMDE 4O WITH ORIFICE AS TIGHT- COUPLING:
WELDED WIPE FABRIC IN A(: RI)AHCE W/AP)7(1iv AIE 5NEEDED -01 SPE DED I . NOT
iF ONIY !� '
DESIGN LOADS : FOR 0 1 L POLL UT10N _ ;' � PLAN V iEW
AA!5PO - 0- 20 coNTftoL .
GALVANIZING-
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ALL FABRICATED STEEL iTEMs r_X>;.CPi RCINrGI�CItJ��.T06E 1 �z"
upT DIPPED GALVAMIZED AFTER FAbRICAi•I0IJ COI�IFORMIrdG / �, zz�•�
i PLATE WITH
TO SPEGIFIt;Ai IONS AiirM A3P411 �n A3��A3�, rr A125. ORIFICE AS ELBOW DETAIL
15PEC_A
CATCH BASIN TYPE 2 FLOW RESTRICTOR /OIL POLLUTION
l T 046 62�' DIAMETER RS REQUIRED CONTROL DEVICE, TEE TYPE. (FROP-T)
SEE OWC-a. No. 33 KC RS. KING COUNTY, DWG.
OIL WATER SEPARATOR DATE 9 j WASHINGTON NO. 52
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RECOMMENDED
FOR APPROVAL
STORM WATER DRAINAGE NOTES 11/30/98
1.
BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY
11.
Structures shall not be permitted within 10 feet of
OCCURS, A PRE -CONSTRUCTION MEETING MUST BE HELD WITH
the spring .line of any storm drainage pipe, or 15 feet
TiIE CITY OF RENTON DEPARTMENT OF PUBLIC WORKS, DESIGN
from the top of any channel bank.
ENGINEER.
12.
All catch basin grates shall be depressed 0.10 feet
2.
All construction shall be in accordance with the "1980
below pavement level.
Standard Specifications for Road, Bridge and Municipal
Construction" prepared by W.S.D.O.T., and the American
-
Public Works Association (APWA), as amended by the
13.
Open cut road crossings thru existing public right -of -
City of Renton Department of Public Works.
way will not be allowed unless specifically approved
by City of Renton Dept. of Public Works, Design
Engineer,
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The storm drainage system shall be Constructed
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according to the approved plans which are on file in
the Department of Public Works. Any deviation from
14.
Rock for erosion protection of roadside ditches, where
the approved plans will require written approval from
required, shall be of sound quarry rock placed to a
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the City of Renton Department of Public Works, Design
depth of 1 foot and must meet the following
`its
Engineer or Storm Water Utility .
specifications: 411-8"/40%-70X passing; 2"-4" rock/30%-
40% passing; and -2" rock/10%-20% passing.
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4.
A copy of these approved plans must be on the job site
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whenever construction is in progress.
15.
All building downspouts and footing drains shall be
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connected to the storm drainage system, unless
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approved by the Dept. of Public Works, Design Engineer
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5.
Datum shall be U.S.G.S. unless otherwise approved by
or Storm Water Utility. An accurately dimensioned
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City of Renton Department of Public Works. Reference
Certified as built drawing of this drainage system
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benchmark and elevation are noted on the plans.
will be submitted to the City of Renton upon
completion.
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6.
All sedimentation/erosion facilities must be in
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operation prior to clearing and building construction,
16.
Issuance of the Building or Construction Permit by the
and they must be satisfactorily maintained until
City of Renton does not relieve the owner of the
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construction is completed and the potential for on-
continuing legal obligation and/or liability connected
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site erosion has passed.
with storm surface water disposition. further, the.
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City of Renton does not accept any obligation for the
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proper functioning and maintenance of the system
7.
All retention/detention facilities must be installed
provided during construction.
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and in operation prior to or in conjunction with all
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construction activity unless otherwise approved by the
Department of Public Works, Storm Water Utility.
17.
The Contractor shall be responsible for providing
adequate safeguard, safety devices, protective
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equipment, flaggers, and any other needed actions to
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8.
Grass seed may be applied by hydroseeding. The gross
protect the life health, and safety of the public, and
seed mixture, other than City of Renton approved
to protect property in connection with the performance
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standard mixes, shall be submitted by a Landscape
of work covered by the contract. Any work within the
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Architect and approved by the Dept. of Public Works,
traveled right-of-way that may interrupt normal
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Storm Water Utility.
traffic.flow shall require an approved traffic control
plan by the Traffic Engineering Div. of the Dept. of
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Public Works. All sections of the W.S.D.O.T. Standard
9.
Alt pipe and appurtenances shalt be laid on -a
Specifications 1-07-23, Traffic Control, shall apply.
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properly prepared foundation in accordance with
Section 7-02.30) of the current State of Washington
18.
Special drainage measures will be required if the
Standard Specification for Road and Bridge
Construction. This shall include necessary leveling
project location is within the aquifer protection
area.
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
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entire length of the pipe will be supported on a
uniformly dense unyielding base. All pipe bedding
shalt 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
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shall be 6" over and under P.V.C. pipe.
10.
Galvanized steel pipe and aluminized steel pipe for
-
all drainage facilities shall have as
g asphalt treatment
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Al or better inside and outside.
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