HomeMy WebLinkAboutR-396706C'7
I
O
W
I-
4' MIN
V OVERFLOW DEPTH
t'EDEPTiL2" �k .RS)CK � OUTFLOW
j CHANNEL IF
CONSTRUCTED BY
S - 9 EXCAVATION.
2' SETTLING DEPTB 1 r 1 5'MAX
SEDIMENT STORAGE
FILTER FABRIC FENCING
,1' DEPTH 3/4" - 1-1/2" WASHED GRAVEL
CROSS SECTION
NTS
NOTE:
MAY BE CONSTRUCTED BY EXCAVATION
OR BY BUILDING A BERM
Y
PUBLIC WORKS', SEDIMENT TRAP STD. PLAN — 211.00
DEPARTMENT
MARCH 2O08
r
g H'r�p ORq� tip,
1969
Sq iING
F
g
2 GIs �
AL A I A 115 ORN
'r ADJACENT ROLLS
SHALL TIGHTLY
ABUT
SEDIMENT, ORGANIC MATTER, ,\
AND NATIVE SEEDS ARE \\
ROLL SPACING
CAPTURED BEHIND THE ROLLS
DEPENDS ON SOIL
TYPE AND SLOPE STEEPNESS
VY/
STRAW ROLLS MUST BE
PLACED ALONG SLOPE 1
CONTOURS
("-125mm)
8"-10" CIA.
(200-250mm)
LIVE STAKE
NOTES 1" z i" STAKE
1. CONDITION OF USE
1.1. SEEDING SHALL BE USED THROUGH THE PROJECT ON DISTURBED AREAS THAT HAVE REACHED FINAL GRADE OR THAT WILL REMAIN
UNWORKED FOR MORE THAN 30 DAYS.
1.2. VEGETATION -LINED CHANNELS SHALL BE SEEDED. CHANNELS THAT WILL BE VEGETATED SHOULD BE INSTALLED BEFORE MAJOR
EARTHWORK AND HYDROSEEDED OR COVERED WITH A BONDED FIBER MATRIX (BFM)
1.3. RETENTION / DETENTION PONDS SHALL BE SEEDED AS REQUIRED.
1.4. AT THE CITY'S DISCRETION, SEEDING WITHOUT MULCH DURING THE DRY SEASON IS ALLOWED EVEN THOUGH IT WILL TAKE MORE
THAN SEVEN DAYS TO DEVELOP AN EFFECTIVE COVER.
1.5. AT THE BEGINNING OF THE WET SEASON, ALL DISTURBANCES AREAS SHALL BE REVIEWED TO IDENTIFY WHICH ONES CAN BE SEEDED
IN PREPARATION FOR THE WINTER RAINS. DISTURBED AREAS SHOULD BE SEEDED WITHIN A WEEK OF BEGINNING OF THE WET
SEASON. AT FINAL SITE STABILIZATION, ALL DISTURBED AREAS NOT OTHERWISE VEGETATED OR STABILIZED SHALL BE SEEDED AND
MULCHED.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. THE BEST TIME TO SEED IS APRIL 1 THROUGH JUNE 30, AND SEPTEMBER 1 THROUGH OCTOBER 15. AREAS MAY BE SEEDED BETWEEN
JULY 1 AND AUGUST 31, BUT IRRIGATION MAY BE REQUIRED IN ORDER TO GROW ADEQUATE COVER. AREAS MAY ALSO BE SEEDED
DURING THE WINTER MONTHS, BUT IT MIGHT TAKE SEVERAL MONTHS TO DEVELOP A DENSE GROUNDCOVER DUE TO COLD
TEMPERATURES.
2.2. TO PREVENT SEED FROM BEING WASHED AWAY CONFIRMED_ THAT ALL REQUIRED SURFACE WATER CONTROL MEASURES HAVE BEEN
INSTALLED.
2.3. THE SEEDBED SHOULD BE FIRM BUT NOT COMPACTED.
2.4. IN GENERAL, 10-20-20N-P-K FERTILIZER MAY BE USED AT A RATE OF 90 POUNDS PER ACRE. IT IS RECOMMENDED THAT AREAS BEING
SEEDED FOR FINAL LANDSCAPING CONDUCT SOIL TO DETERMINE THE EXACT TYPE AND QUANTITY OF FERTILIZER NEEDED.
DISTURBED AREAS WITHIN 200 FEET OF WATER BODIES AND WETLANDS MUST USE SLOW RELEASE LO-PHOSPHORUS FERTILIZER.
2.5. THE FOLLOWING REQUIREMENTS APPLY FOR MULCHING
2.5.1. MULCH IS ALWAYS REQUIRED FOR SEEDING SLOPES GREATER THAN 3H:1V
2.5.2. IF SEEDING DURING WET SEASON MULCH IS REQUIRED
2.5.3. THE USE OF MULCH MAY BE REQUIRED DURING WET SEASON AT THE CITY'S DISCRETION IF GRASS GROWTH IS EXPECTED TO BE
SLOW, THE SOILS ARE HIGHLY ERODIBLE DUE TO SOIL TYPE OR GRADIENT, THERE IS A WATER BODY CLOSE TO THE DISTURBED
AREA, OR SIGNIFICANT PRECIPITATION IS ANTICIPATED BEFORE THE GRASS WILL PROVIDE EFFECTIVE COVER.
2.5.4. MULCH MAY BE APPLIED IN TOP OF THE SEED OR SIMULTANEOUSLY BY HYDROSEEDING.
2.6. HYDROSEEDING IS ALLOWED AS LONG AS TRACKIFIER IS INCLUDED. HYDROSEEDING WITH WOOD FIBER MULCH IS ADEQUATE DURING
THE DRY SEASON. HYDROSEEDING WITH WOOD FIBER MULCH IS ADEQUATE DURING THE DRY SEASON. DURING THE WET SEASON,
THE APPLICATION RATE SHOULD BE DOUBLED. IT MIGHT BE NECESSARY IN SOME APPLICATIONS TO INCLUDE STRAW WITH THE
WOOD FIBER, BUT THIS CAN BE DETERMINED TO GERMINATION.
2.7. AREAS TO BE PERMANENTLY LANDSCAPED SHALL USE SOIL AMENDMENTS. GOOD QUALITY TOPSOIL SHALL BE TILLED INTO THE TOP
SIX INCHES TO REDUCE THE NEED FOR FERTILIZER AND IMPROVED THE OVERALL SOIL QUALITY. MOST NATIVE SOILS WILL REQUIRE
THE ADDITION OF 4 INCHES OF WELL -ROTTED COMPOST TO BE TILLED INTO THE SOIL TO PROVIDE A GOOD QUALITY TOPSOIL.
tiZY STD. PLAN — 213.40
PUBLIC WORKS' STRAW WATTLES
'AIVTO� DEPARTMENT
MARCH 2O08,
BUSH, ROED & HITCHINGS, INC.
LAND SURVEYORS & CIVIL ENGINEERS
2009 MINOR AVE. EAST (206) 323-4144
SEATTLE, Washington 1-800-935-0508
98102-3513 FAX# (206) 323-7135
1. CONDITION OF USE
1.1. ,SHALL BE PROVIDED FOR ALL STORM DRAIN INLETS DOWNSLOPE AND WITHIN 500 FEET OF A DISTURBED OR CONSTRUCTION AREA, UNLESS
THE RUNOFF THAT ENTERS THE CATCHBASIN WILL BE CONVEYED TO A SEDIMENT POND OR TRAP.
1.2. 1MAY BE USED ANYWHERE AT THE APPLICANT'S DISCRETION TO PROTECT DRAINAGE SYSTEM.
1.3. 'THE CONTRIBUTING DRAINAGE AREA MOST NOT BE LARGER THAN 1 ACRE.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. FILTER FABRIC IS ONLY ALLOWED WERE PONDING WILL NOT BE A TRAFFIC CONCERN AND WHERE SLOPE EROSION WILL NOT RESULT IF THE
CURB IS OVERTOPPED BY PONDED WATER.
2.2. THE PLACEMENT OF A FILTER FABRIC UNDER GRATES IS GENERALLY PROHIBITED AND THE USE OF FILTER FABRIC OVER GRATES IS STRICTLY
LIMITED AND DISCOURAGED.
3. MAINTENANCE STANDARDS
3.1. ANY ACCUMULATED SEDIMENT ON OR AROUND INLET PROTECTION SHALL BE REMOVED IMMEDIATELY. SEDIMENT SHALL NOT BE REMOVED
WITH WATER AND ALL SEDIMENT MUST BE DISPOSED OF AS FILL ON SITE OR HAULED OFF SITE.
tiZY � PUBLIC WORKS' FILTER FABRIC PROTECTION STD. PLAN — 216.20
DEPARTMENT MARCH 2008
SURVEYED: SCALE:
JMH
DESIGNED: AS SHOWN
ZJE
DRAWN:
ZJE
ONE INCH
CHECKED: Al FULL SCALE
TFD IF NOT ONE INCH
NO. REVISION BY DATE AP P R APPROVED: SCALE ACCORDINGLY
TFD
vERnCAL: NAVD 19a8
HORIZONTAL" NAD 1983/1991
DATU M
0 CITY OF
RENTON
Planning/Building/Public Works Dept.
AS —BUILT CERTIFICATION:
I HEREBY CERTIFY THAT THE HORIZONTAL AND VERTICAL LOCATION OF
THE STORM DRAINAGE STRUCTURES AND THE HORIZONTAL LOCATION
OF THE WATER SURFACE FEATURES SHOWN HEREON AND SHOWN IN
BOLD IS THE RESULT OF A FIELD SURVEY- PERFORMED BY ME OR
UNDER M IRECTION.
TED DIMOF, P. 0. 024
12/6/18
DATE
THE ENGINEER OF RECORD CERTIFYING THESE RECORD DRAWINGS HAS
NOT WITNESSED ALL ELEMENT OF CONSTRUCTION AND IS NOT
RESPONSIBLE FOR ERRORS OR OMISSIONS IN DATA PROVIDED BY THE
CONTRACTOR OR THE SURVEYOR OF RECORD.
IN COMPLIANCE WITH CITY OF RENTON STANDARDS
TESC DETAILS
US BANK EXPANSION
2500 EAST VALLEY ROAD
RENTON, WASHINGTON 98057
STRADA DA VALLE
DATE:
12/6/2018
FIELDBOOK:
PAGE:
SHEET: C 6 OF.1 1
R-396706