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Madsen--- �_-INSTALL TEMPORARY YPASS DAM �`ETR�
FOR Cf�EE�DIVEf�S ON A `\ N
SEE DETAIL p O/ q
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BYPASS PIPE INLET
24"CMP IE=121.1 est
UTILITY EASEMENT
See Note
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UTILITY EASEMENT FROM NEW LIFE CHURCH 8/10/09
KING CO. RECORDING # 20091007000046
RECOMMENDED
FOR APPROVAL
BY Daniel Care
BY
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-ToDr-CONC DAM, SUMP, AND -�
_COLLECT ----_____
-- --_ONDARY FLOW PUMP �\
_ A
- LOG DROPS --- --- -_ �� \�� _
,1000
o —- ----_
_ 1v
• 2H. � -
116
�. . . . . . . . . . .
BOTTOM OF BASIN . . . . .
: : : : : APPX. EL 113 i
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\ . . . . . . . ......
i +
ACCESS BASIN DOWN .
THIS SIDE ONLY ♦ ( ;
If
24 CMP BYPASS PIPE
LOCATION NOT VERIFIED
+
120
X
HYDROSEED AND STRAW MULCH
DISTURBED SLOPE AND ACCESS ROAD
AFTER BASIN CLEANING
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>� O 24"CMP BYO ASS PIPE
LOCATION NOT VERIFIED
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BYPASS PIPE OUTLET
24" CMP
IE=116.12
6 /5 /14
NO.
REMOVE SEDIMENT TO BASE GRADES SHOWN
OR TO TOP OF RIP —RAP ON SIDE SLOPES.
DO NOT OVEREXCAVATE SIDESLOPES.
USE SMOOTH BUCKET, NO TEETH.
SEDIMENT LIMITS APPROXIMATE.
SEDIMENT DEPTH APPROX 4 TO 6 FEET.
0' 2 0'
O
SCALE 1 "= 20 Feet
CONSTRUCTION NOTES
1. PIPE INVERT ELEVATIONS TAKEN FROM PRELIMINARY SITE
PLAN, NEW LIFE CHURCH, WEST SIDE IMPROVEMENTS.
2. SEDIMENT LIMITS AND BASIN BOTTOM ELEVATIONS ARE
APPROX. THE CITY MAY ADJUST THE SEDIMENT REMOVAL LIMITS
AND DEPTHS AS NEEDED.
3. TEMPORARY BYPASS DAM SHALL BE WATER TIGHT SO BASIN
CAN BE DRAINED AND SEDIMENT CAN BE DRIED OUT.
4. FISH RESCUE IN THE SEDIMENT BASIN SHALL OCCUR
IMMEDIATELY AFTER THE BYPASS DAM IS INSTALLED.
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12'x3' CONC. BOX CULVERT
OVERFLOW SPILLWAY
IE =1 17.86
UTILITY EASEMENT
Np gC�E55 See Note
\ � FROM
�S S/DE
36" CMP INLET
IE =1 15.81 ,-- - - -_ ___--- _ _,` , MET
- --
vtL
/ACC SS ROAD
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36" CMP OU�LET _ ! ry) -- _` 169
------ - - 9
\ IE=114.47 \ �� OVERFLOW SPILLWAY
IE =116.8 est -
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SEDIMENT BASIN CLLE-A_NING DRAWING
REVISION
SURVEYED:
DESIGNED:
DC DRAWN:
DC
CHECKED:
DC / RS
BY DATE APPR APPROVED:
RS
-------------- -- -
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D=349701
AS —BUILT
NOTES
1. 2009 -
POND BOTTOM WAS
WET AND
MUCKY.
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.
2. 2010 -
POND CLEANED TO
APPX EL
113.
BOTTOM
WET, MUCKY DUE TO WATER GETTING PAST DAM OR GROUNDWATER.
3. 2011 -
POND CLEANED TO
APPX EL
113. BOTTOM WET, MUCKY
DUE TO GROUNDWATER.
2014 Cleaning
SCALE:
AS NOTED HORIZONTAL- N DV01983/1991 �� _ CITY OF 6/5/ 1 4
MADSEN CREEK SEDIMENT BASIN PGLDBOOK:
RENTON CLEANING PROJECT
ONE INCH \ J V, DRAWING N0:
AT FULL SCALE Planning/Building/Public Works Dept. SEDIMENT BASIN
IF NOT ONE INCH
SCALE ACCORDINGLY
SHEET: OF:
x 2
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