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I' CONDITION OF USE
1.1. CONSTRUCTION ENWANCE SHALL BE STABILIZED WHEREVER TRAFFIC WILL SE LEAVING A CONSTRUCTION SUE AND TRAVELING ON
PAVED ROADS OR OTHER PAVED AREAS WUHIN ILODID FEET OF THE SM.
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2 DESIGN AND NSTALUTION SPEaFCATONS
2.1. HOG FUEL (WOOD BASED MULCH) MAYBESUBSTITUTED FOR OR COMBINED WITH QUARRY SPALLS IN ARE$ THAT WCL BOT BE USED
FOR PERMANENT ROADS. HOG FUEL IS NOT RECOMMENDED FOR ENTRANCE STABILIZATION IN URBAN AREAS. THE INSPECTOR MAY
AT ANY TIME REQUIRE THE USE OF (QUARRY SPALLS E THE HOG FUEL IS NOT PREVENTING SEDIMENT FROM BEING TRACKED ONTO
PAVEMENTOR IF THE HOG FUEL IS BEING CARRIED ONTO PAVEMENT.
22. FENCINGSHALLBE INSTALLED AS NECESSARY TO RESTRICT TRAFFICTO THE CONSTRUCTION ENTRANCE.
2.3. WHENEVER POSSIBLE, THE ENTRANCE SHALL BE CONSTRUCTED ON A FIRM, COMPACTED SUBGRADE. THIS CAN SUBSTANTIALLY
INCREASE THE EFFECT WENESS OF THE PAD AND REDUCE THE NEED FOR MAINTENANCE.
1 YAIXTENMGE STANDARDS
3.1. GUARRY SPALLS SHALL BE ADDED IF THE PAD IS NO LONGER IN ACCORDANCE WITH THE SPECIFICATIONS.
32. IF THE ENTRANCE IS NOT PREVENTING SEDIMENT BENG TRACKED ONTO PAVEMENT, THEN ALTERNATIVE MEASURES TO KEEP THE
3.3.
SMALL SUMP MUST BE CONDUCTED. THE SEDIMENT WOULD THEN BE WASHED INTO THE SUMP WHERE IT CAN BE CONTROLLED ANC
DISCHARGED APPROPRIATELY.
3A. ANY OUARRY SPALLS THAT ME LOOSENED FROM THE PAD AND END UP ON THE ROADWAY SHALL BE REMOVED IMMEDIATELY.
35. IF VEHICLES ARE ENTERING M EXITING THE WES AT POINTS OTHER THAN THE CONSMUCTK)N ENTRANCE(S). FENCING SHALL BE
INSTALLED TO CONTROL TRAFFIC,
PUB11C WORKS STABILIZED STD. PLAN - 215.10
DEPARTMENT CONSTRUCTION ENTRANCE I
MARCH 2008
Surface Water Standard Plan Notes
1. These notes shall appear on projects for the surface water utility
2. Before any construction or development activity occurs, ❑ pre- construction
meeting
must be held between the City of Renton plan review section and the applicant.
3. All design and construction shall be in accordance with the Renton Municipal
Code
(RMC), the latest edition of the Standard Specifications for Road, Bridge and
Municipal Construction prepared by WSDOT and the American Public Works
Association (APWA), as amended by the City of Renton Public Works Department. It
shall be the sole responsibility of the applicant and the professional civil engineer
to
correct any error, omission or variation from the above requirements found in this
plans. all corrections shall be at no additional cost to the City.
4. Approval of this road, grading, parking and drainage plan does not constitute
an
approval of any other construction (e.g. domestic water conveyance, sewer
conveyance, gas, electrical. etc.)The surface water drainage system shall be
constructed according to the approved plans, which are on file in with the City.
Any
deviation from the approved plans will require written approval from the City of
Renton Public Works Department, Surface Water Utility Section.
5. A copy of these approved plans must be on the job site whenever construction
is in
progress.
6. Grading activities (site alteration) are limited to the hours of 7 a.m. to 7 p.m.
Monday through Saturday and no work on Sunday is allowed, unless otherwise
approved with a written decision by the City of Renton.
7. It shall be the applicant's /contractor's responsibility to obtain all construction
easements necessary before initiating off -site work. Easements require City review
and approval prior to construction.
CITY OF NI ON
Approved by
Approved by:
Approved by:
Approved by:
Date:
Date:�'1� 4
Date:
Date:
N.W. 1/4, SEC. 15 TWP. 23N., RGE. 5E., W.M.
ORANAGEGRATE
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1. Size the Below Inlet Grate CHH4W(81GDI for Me smml wale' SINCB"e ll MI Bervke.
2, The 9lGOShall have o bull) -In hlgh-Aow repot sysbm(ovel,M bypasa),
3. The relrio lsyelem must albw removal d Ma GIGO w Mau, 51111411he,ale,aW HHHW 1.
4. Perform melntenance In accordance%M Slandaml Spec tbn 801.3(15).
SYSTEM (IYP.I
Ptl3I1C WORKS CATCH BASIN FILTER SM. PLAN - 218.90
DRPARTMC \T LARCH 2008
8. Franchised utilities or other installations that are not shown on these approved
plans
shall not be constructed unless an approved set of plans that meet all
requirements
of Chapter 4 of the Surface Water Design Manual are submitted to the City of
Renton.
9. Datum shall be NAVD 88 unless otherwise approved by the City of Renton.
Reference benchmark and elevations are noted on the plans.
10. Any dewatering system necessary for the construction of stormwater facilities
must
be submitted 1:11. All utility trenches and roadway subgrade shall be backfilled and
compacted to 95 percent density, standard proctor.
11. All utility trenches and roadway subgrade shall be backfilled and compacted to
95 percent density, standard proctor.
12. Open cutting of existing roadways for non - franchised utility or storm drainage
work
is not allowed unless specifically approved by the City of Renton and noted on
these
approved plans. Any open cut shall be restored in accordance with the City of
Renton trench restoration standards.
13. All sedimentation /erosion facilities must be in operation prior to clearing and
building
construction, and they must be satisfactorily maintained until construction is
completed and the potential for on -site erosion has passed.
14. All retention /detention facilities must be installed and in operation prior to or in
conjunction with all construction activity unless otherwise approved by the Public
Works Department, Surface Water Utility Section.
15. All pipe and appurtenances shall be laid on a properly prepared foundation in
accordance with 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.
16. Steel pipe shall be aluminized, or galvanized with asphalt treatment #1 or
better
inside and outside.
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1. CONDRIONOFUSE
I.I. WERE CONCENTRATED RUNOFF FROM DISTURBED AREAS TO AND FROM PONDS OR TRAPS.
1.2. TO CONVEY RUNOFF INTERCEPTED FROM UNDISTURBED AREAS MOUND THE SITE TO A NON£ROSIVE DISCHARGE POINT.
2. MARTENANCESTANDMDS
2.1. ANY SEDIMENT DEPOSITION OF MORE THAN OS FEET SHALL BE REMOVED SO THAT THE CHANNEL IS RESTORED TO ITS ORK;INAL
DESIGNCMACRY.
22 THE CHECK DAMS SHALL BE EXAMINED FOR SIGNS OF SCOURING AND EROSION OF THE BED AND BANKS. IF SCOURING AND ERIE
HAS OCCURRED, AFFECTED AREAS SHALL BE PROTECTED BY RP'RAP OR AN EROSION CONTROL BLANKET.
PURUC WORKS CHECK DAMS SPACING AND SM. PLAN - 217.40
DEPARTMEN'C CROSS SECTIONS MARCH 2008
17. All drainage structures, such as catch basins and manholes shall have solid
locking
lids. All drainage structures associated with a permanent retention /detention facility
shall have solid locking lids.
18. Building and other structures shall be placed in accordance with Table 4.1
Easement
Widths and Building Setbacks Lines.
19. All catch basin grates shall be depressed 0.10 feet below pavement level.
20. All driveway culverts located within City of Renton right -of -way shall be of
sufficient
length to provide a minimum 3:1 slope from the edge of the driveway to the
bottom
of the ditch. Rock for erosion protection of roadside ditches, where required, shall
be
of sound quarry rock placed to a depth of one (1) foot and must meet the
following
specifications:
4 - 8 inch rock / 40 - 70% passing;
2 - 4 inch rock / 30 - 40% passing; and
less than 2 inch rock / 10 - 20% passing.
21. 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 system will be
submitted to the City upon completion.
22. Drainage outlets (stub -outs) shall be provided for each individual lot, except for
those lots approved for infiltration by the City. Stub -outs shall conform to the
following:
a. Each outlet shall be suitably located at the lowest elevation on the lot, so as to
service all future roof downspouts and footing drains, driveways, yard drains,
and any other surface or subsurface drains necessary to render the lots suitable
for their intended use. Each outlet shall have free - flowing, positive drainage to
an approved stormwater conveyance system or to an approved outfall location.
b. Outlets on each lot shall be located with a five - foot -high, 2" x 4" stake marked
"storm" or "drain ". The stub -out shall extend above surface level, be visible, and
be secured to the stake.
R- 368110
b. Outlets on each lot shall be located with a five- foot -high, 2" x 4" stake marked
"storm" or "drain ". The stub -out shall extend above surface level, be visible, and
be secured to the stake.
c. Pipe material shall conform to underdrain specifications described in Chapter 4
of
the Surface Water Design Manual and, if non - metallic, the pipe shall be placed in
a trench with a tracing wire above or other acceptable detection.
d. Private drainage easements are required for drainage systems designed to
convey flows through individual lots.
e. The applicant /contractor is responsible for coordinating the locations of all
stubout
conveyance lines with respect to other utilities (e.g. power, gas, telephone,
television).
f. All individual stub -outs shall be privately owned and maintained by the lot home
owner.
g. Storm drainage pipe systems shall not penetrate building foundations, except for
sump pump discharge lines used to drain crawl spaces, provided the sump pump
system includes backflow prevention or a check valve.
23. All disturbed pervious areas (compacted, graded, landscaped, etc.) of the
development site must demonstrate one of the following: The existing duff layer
shall be staged and redistributed to maintain the moisture capacity of the soil, OR;
Amended soil shall be added to maintain the moisture capacity.
24. Proof of liability insurance shall be submitted to the City prior to construction
permit
issuance.
25. 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
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.
26. The Contractor shall be responsible for providing adequate safeguard, safety
devices, protective equipment, flaggers, and any other needed actions to protect the
life, health, and safety of the public, and to protect property in connection with
thenormal traffic flow shall require a traffic control plan approve by the Public
Works
Department, Transportation Systems Division. All sections of the WSDOT Standard
Specifications 1 -07 -23 Traffic Control shall apply.
27. Project located within the aquifer protection area (APA) shall comply with
Special
Requirement #6 of the Surface Water Design Manual and Aquifer Protection
Regulations (RMC 4 -3 -050).
STRUCTURAL NOTES
1. These plans are approved for standard road and drainage improvements only. Plans
for structures such as bridges, vaults, and retaining walls require a separate review
and approval by the City prior to construction.
2. Rockeries are considered to be a method of bank stabilization and erosion control.
Rockeries shall not be constructed to serve as retaining walls. All rockeries in City
road right -of -way shall be constructed in accordance with City Standards. Rockeries
outside of road right -of -way shall be constructed in accordance with the
International Building Code.
PREFERRED
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