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TION NOTES
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_____ ONDARY
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RT ELEVATIONS TAKEN FROM PRELIMINARY SITE
LOG DROPS
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IFE CHURCH, WEST SIDE IMPROVEMENTS.
LIMITS AND BASIN BOTTOM ELEVATIONS ARE
2H:iV
E CITY MAY ADJUST THE SEDIMENT REMOVAL LIMITS
AS NEEDED.
YPASS PIPE
2 "CMP E =121.1 t
°°
REMOVE SEDIMENT TO BASE GRADES SHOWN
3. TEMPORARY BYPASS DAM SHALL BE WATER TIGHT SO BASIN
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OR TO TOP OF RIP -RAP ON SIDE SLOPES.
CAN BE DRAINED AND SEDIMENT CAN BE DRIED OUT.
. . .
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HAND DIG IF NEEDED TO IDENTIFY RIP -RAP.
DO NOT OVEREXCAVATE SIDESLOPES.
BOTTOM OF BASIN j;
APPX. EL 113
USE SMOOTH BUCKET, NO TEETH.
4. FISH RESCUE IN THE SEDIMENT BASIN SHALL OCCUR
IMMEDIATELY AFTER THE BYPASS DAM IS INSTALLED.
UTILITY EASEMENT
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SEDIMENT LIMITS APPROXIMATE.
See Note
ACCESS SIN
S
DOWN E\
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+
SEDIMENT DEPTH APPROX 4 TO 6 FEET.
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24 "CMP BYPASS PIPE
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LOCATION NOT VERIFI6j
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OSEE D AN STRAW MULCH
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DIST
RBE SLOP. AND ACCESS ROAD
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AFTE
BAS CL ING
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OVERFLOW SPILLW Y
NO
UTILITY EASEMENT
See Note
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ACCESS F
RO T S
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a`M SID E
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24 "CMP BY ASS PIPE \�� '�
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LOCATION OT VERIFIED , \' E = 115.8 INLET —_
A4
BYPASS PIPE OUTLET
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GRAV
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E4 =116.12
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_Ol/FRF(Ow,
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ROAp �-
OM
36" CMP OU`I.ET ��
.�HANNEL.Cdry)
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IL =114.47
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AS —BUILT NOTES
— 2009
UTILITY EASEMENT FROM NEW LIFE CHURCH 8/10/09
SEDIMENT BASIN CLEANING DRAWING
1, POND BOTTOM WAS WET AND MUCKY.
KING CO. RECORDING # 20091007000046
EXCAVATOR STAYED ON PAD OF SEDIMENT AND REMOVED MATERIAL TO APPX. EL 113
BY JUDGING THE
DEPTH SHOVEL WENT DOWN. APPROX 1000 CY REMOVED.
BOTTOM WAS TOO
MUCKY TO WALK ON AND SURVEY AFTER WORK WAS FINISHED.
�= 349703 2010 Cleaning
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RECOMMENDED
FOR APPROVAL
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AS NOTED CITY OF
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7/7/10
MADSEN CREEK SEDIMENT BASIN
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RENTON
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CLEANING PROJECT „
a¢raaoDC RS
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Wrl vw.scue I Planning /Building /Public Works Dept.
SEDIMENT BASIN
BY
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N0.
REVISION BY DATE APPR �„�p,�
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