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CONSTRUCT GRAVEL ACCESS
ROAD TO CONTROL STRUCTURE
DRAINAGE FACILITY PLAN AND DETAILS
FOR
COPPERWOOD
PTN OF THE NW1 /4, OF THE SEII/4 OF SEC. 15
TWP. 23 N. RGE 5 EAST, W. M.
CITY OF RENTON, KING COUNTY, STATE OF WASHINGTON
ST(}RMFILTER VAULT
PER DETAIL SHEET 18. �
7 LF 18" SD O 0.55%
-.;� ` ORDINARY HIGH
17 LF 18" SD O 0.55% . �• �� � WAS MARK IE= 373.75 (18'
`.. W/ RIPRAP PAD PER
� '`�._ ._ •. SPECS SHEET 15.
X20 LF 18" 5D O 19.75% \ `:. ;� � . .. .. '�,,, SEE DETAIL ON SHEET 16
_ 44 1.F
1 8,. SD
� p•55% •f•.. I
MERGENCY OVERFLOW 1 r
S ILLWAY PER DETAIL
THIS SHEET t- - `�` T SHEET j Ir
20' WIQE SWf1G ; �� \ `> �` �\ �\ �38Q
�\ �p : 6 HIGH BLACK VINYL CHAIN ---- -
GATE PAR WS60T LINK FENCE PER WSDOT -382 _ �••
STD PLAN SHE 26 ''''• \
STD PLAN' -SHEET 13 : 18 ,
t ALONG TOP "OF POND
30 LF 180 SD O 8.3271.
t �
IE= 374.50 (18*) : t 1 t t t ` �E` `� TRACT LINE 8 SHEAR
'•.
W/ DEBRIS BERRIER GATE
` `l TRACT A '•
15 t '0� B.
i ` ` ` `� 15
mom Nils
STATIC WATER SURFACE
i I I V :\
1 I I I \ ...... EL= 377.00
MAX WATER SURFACE I
I I I i d.MACT B EL= 384.00
1 I I I BOT`fOM • OF \
I I I I
.. +. I WETPOND
232 LF 30n SD O 1.72% EL= 372.00
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I I 1 1 I I I I +
� r r I• � � ► � TOP F P
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_ ►� - -7�_ _ i ► ► , *INDIVIDUAL T MP NOTE:
__ � i• � r _ .. :I D DUAL LO B
- - - _ _ _ _ / r r THIS PROJECT IS USING THE REDUCED IMPERVIOUS
IE= 373.00 (30' j `'�7-�- - - _ _ _ / 2' : : : I w SURFACE CREDIT TO MEET THE INDIVIDUAL LOT
W/ DEBRIS BARRIER _ 6 WIDE BERM _ BMP REQUIREMENTS (SPECIFICALLY THE RESTRICTED
W/ RIPRAP PAD PER I I :. �s: + I - _ _ _ _ _ _ 3-Z� _ _ EL- 377.00 , �i / / : ' FOOTPRINT BMP), WHICH REQUIRES REDUCING THE
SPECS SHEET 15. I i - - - _ _ _ _ _ �' . i I : : / :: ALLOWABLE IMPERVIOUS COVERAGE BY 10 PERCENT.
THIS PROJECT IS ZONED R -4 AND IS USING THE
b
CLUSTERING PROVISION WITHIN THE CODE. PER
C.O.R. CODE CLUSTER PROJECTS IN THE R -4 ZONE
I ► / / / / ARE TO USE THE R-8 BULK REQUIREMENTS.
►••' + I / /
V. / i / /= R -8 ZONE ALLOWS 75% MAX IMPERVIOUS COVERAGE
CONSTRUCT :GRAVEL + + I I + I / / / / / / / f ! l Y PER LOT.
ACCESS ROAD USING: I +
1-1/20 CRUSHED It BO OM OF / • / / / ` THE DRAINAGE FACILITY HAS BEEN SIZED
SURFACING TOP COURSE + 1= I W OND / '� / / / : :I : = =� FOR 65% MAX IMPERVIOUS COVERAGE PER LOT.
I + 1 I I I EL 70.00 CRUSHED
SURFACING BASE 2 -1 /2
TRACT B POND DATA
+ + ► / �� COMBINED WETPOND /DETENTION POND
COURSE I I + I I / / .•� '•• / / : / `�°
+ + . + I I ► I 1 1 I I I I I I • � l''I � l / i -: .-
LEVEL 2 FLOW CONTROL
°`DEAD STORAGE
=3 MINIMUM TOP OF POND EL-
386.00 EL . . - • -. EMERGENCY OVERFLOW WATER SURFACE EL- 385.00
+ •�'• 1 :1 + I I ( II 3 l f i �`�� . EMERGENCY OVERFLOW SPILLWAY EL= 384.65
' 3 I I I �. II , i , '�� - �' RISER OVERFLOW WATER SURFACE EL= 384.15
+ I + '•1 I IZ2_ _ _ _ _ i / i I �`� DESIGN WATER SURFACE EL= 384.00
+ t•. I ' + t I ' I I II STATIC WATER SURFACE EL= 377.00
_ _ _ - - ! CELL# 1 SEDIMENT STORAGE EL= 371.00
' �� �` �� I ♦ I I CELL #2 SEDIMENT STORAGE EL- 373.00
.• _ 3�� _ ' , i / 1
CELL #1 BOTTOM OF WETPOND EL= 370.00
CELL #2 BOTTOM OF WETPOND EL-372,00
DETENTION POND VOLUME REQUIRED =110 677 C.F.
- i MI _ ,
POND VOLUME PROVIDED= C.F.
i / _
POND VOLUME CONSTRUCTED- C.F.
ELEVATION AREA S INCREMENTAL VOLUME TOTAL VOLUME
'-- - - - - -- - - --'' �: 377 12,723 0 0
l 378 14.335 13,529 13,529
384 379 16,004 1 1 698
= 380 17,729 16,866 45,564
/. 381 19,510 18,619 64,184
= / 382 21,348 20,429 84,613
383 23 243 22 295
106,908
> 4 1 4
24,218 131,126
:�'..
•� c' D � .•��'� �� `� = = • � :• - - : •• -•• /• •- . -' -• • -• .. WETPOND VOLUME R IR 1 4
PLAT RQUNQAPY--*' ,�� : : : / EQU ED= _3 ,9 5 C.F.
- WETPOND VOLUME PROVIDED 38,949 C.F.
• LENGTH TO WIDTH RATIO =3:1
ELEVATION AREA (SF) INCREMENTAL VOLUM
VERTICAL DATUM
CITY OF RENTON
Cf1Y OF RENTON, NAVD 88 pEPARTMENT OF PUBLIC WORKS
90
BENCHMARK
FOUND MONUMENT IN CASE APPROVED BY � DATE 9%49.9401r
CONC MONUMENT W /BRASS NAIL APPROVED BY DATE (��
SET 0.65' BELOW GRADE
CITY OF RENTON CONTROL
POINT NO. 478 EL= 391.016 APPROVED BY DATE
(JUNE 2012) APPROVED W DATE
3 REVISED PER CITY REVIEW
2 REVISED PER CITE REVIEW
1 REVISED PER CITY REVIEW
N0. REVISION
372
1.367
O
�x
373
5,228
DESIGNED:
BJT
3,298
4,434
374
6.78
3/30/15
6,006
10,440
Q W
INSTALL POND
BJT
Z
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SIGN ON FENCE
376
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PER DETAIL
SHEET 17.
9.378
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FLOW CONTROL
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PER DETAIL
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CONSTRUCT GRAVEL ACCESS
ROAD TO CONTROL STRUCTURE
DRAINAGE FACILITY PLAN AND DETAILS
FOR
COPPERWOOD
PTN OF THE NW1 /4, OF THE SEII/4 OF SEC. 15
TWP. 23 N. RGE 5 EAST, W. M.
CITY OF RENTON, KING COUNTY, STATE OF WASHINGTON
ST(}RMFILTER VAULT
PER DETAIL SHEET 18. �
7 LF 18" SD O 0.55%
-.;� ` ORDINARY HIGH
17 LF 18" SD O 0.55% . �• �� � WAS MARK IE= 373.75 (18'
`.. W/ RIPRAP PAD PER
� '`�._ ._ •. SPECS SHEET 15.
X20 LF 18" 5D O 19.75% \ `:. ;� � . .. .. '�,,, SEE DETAIL ON SHEET 16
_ 44 1.F
1 8,. SD
� p•55% •f•.. I
MERGENCY OVERFLOW 1 r
S ILLWAY PER DETAIL
THIS SHEET t- - `�` T SHEET j Ir
20' WIQE SWf1G ; �� \ `> �` �\ �\ �38Q
�\ �p : 6 HIGH BLACK VINYL CHAIN ---- -
GATE PAR WS60T LINK FENCE PER WSDOT -382 _ �••
STD PLAN SHE 26 ''''• \
STD PLAN' -SHEET 13 : 18 ,
t ALONG TOP "OF POND
30 LF 180 SD O 8.3271.
t �
IE= 374.50 (18*) : t 1 t t t ` �E` `� TRACT LINE 8 SHEAR
'•.
W/ DEBRIS BERRIER GATE
` `l TRACT A '•
15 t '0� B.
i ` ` ` `� 15
mom Nils
STATIC WATER SURFACE
i I I V :\
1 I I I \ ...... EL= 377.00
MAX WATER SURFACE I
I I I i d.MACT B EL= 384.00
1 I I I BOT`fOM • OF \
I I I I
.. +. I WETPOND
232 LF 30n SD O 1.72% EL= 372.00
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V� EX FISH BARRIE
I I 1 1 I I I I +
� r r I• � � ► � TOP F P
1 I ► ` - y __ I i r 1 r 0 SLOE
_ ►� - -7�_ _ i ► ► , *INDIVIDUAL T MP NOTE:
__ � i• � r _ .. :I D DUAL LO B
- - - _ _ _ _ / r r THIS PROJECT IS USING THE REDUCED IMPERVIOUS
IE= 373.00 (30' j `'�7-�- - - _ _ _ / 2' : : : I w SURFACE CREDIT TO MEET THE INDIVIDUAL LOT
W/ DEBRIS BARRIER _ 6 WIDE BERM _ BMP REQUIREMENTS (SPECIFICALLY THE RESTRICTED
W/ RIPRAP PAD PER I I :. �s: + I - _ _ _ _ _ _ 3-Z� _ _ EL- 377.00 , �i / / : ' FOOTPRINT BMP), WHICH REQUIRES REDUCING THE
SPECS SHEET 15. I i - - - _ _ _ _ _ �' . i I : : / :: ALLOWABLE IMPERVIOUS COVERAGE BY 10 PERCENT.
THIS PROJECT IS ZONED R -4 AND IS USING THE
b
CLUSTERING PROVISION WITHIN THE CODE. PER
C.O.R. CODE CLUSTER PROJECTS IN THE R -4 ZONE
I ► / / / / ARE TO USE THE R-8 BULK REQUIREMENTS.
►••' + I / /
V. / i / /= R -8 ZONE ALLOWS 75% MAX IMPERVIOUS COVERAGE
CONSTRUCT :GRAVEL + + I I + I / / / / / / / f ! l Y PER LOT.
ACCESS ROAD USING: I +
1-1/20 CRUSHED It BO OM OF / • / / / ` THE DRAINAGE FACILITY HAS BEEN SIZED
SURFACING TOP COURSE + 1= I W OND / '� / / / : :I : = =� FOR 65% MAX IMPERVIOUS COVERAGE PER LOT.
I + 1 I I I EL 70.00 CRUSHED
SURFACING BASE 2 -1 /2
TRACT B POND DATA
+ + ► / �� COMBINED WETPOND /DETENTION POND
COURSE I I + I I / / .•� '•• / / : / `�°
+ + . + I I ► I 1 1 I I I I I I • � l''I � l / i -: .-
LEVEL 2 FLOW CONTROL
°`DEAD STORAGE
=3 MINIMUM TOP OF POND EL-
386.00 EL . . - • -. EMERGENCY OVERFLOW WATER SURFACE EL- 385.00
+ •�'• 1 :1 + I I ( II 3 l f i �`�� . EMERGENCY OVERFLOW SPILLWAY EL= 384.65
' 3 I I I �. II , i , '�� - �' RISER OVERFLOW WATER SURFACE EL= 384.15
+ I + '•1 I IZ2_ _ _ _ _ i / i I �`� DESIGN WATER SURFACE EL= 384.00
+ t•. I ' + t I ' I I II STATIC WATER SURFACE EL= 377.00
_ _ _ - - ! CELL# 1 SEDIMENT STORAGE EL= 371.00
' �� �` �� I ♦ I I CELL #2 SEDIMENT STORAGE EL- 373.00
.• _ 3�� _ ' , i / 1
CELL #1 BOTTOM OF WETPOND EL= 370.00
CELL #2 BOTTOM OF WETPOND EL-372,00
DETENTION POND VOLUME REQUIRED =110 677 C.F.
- i MI _ ,
POND VOLUME PROVIDED= C.F.
i / _
POND VOLUME CONSTRUCTED- C.F.
ELEVATION AREA S INCREMENTAL VOLUME TOTAL VOLUME
'-- - - - - -- - - --'' �: 377 12,723 0 0
l 378 14.335 13,529 13,529
384 379 16,004 1 1 698
= 380 17,729 16,866 45,564
/. 381 19,510 18,619 64,184
= / 382 21,348 20,429 84,613
383 23 243 22 295
106,908
> 4 1 4
24,218 131,126
:�'..
•� c' D � .•��'� �� `� = = • � :• - - : •• -•• /• •- . -' -• • -• .. WETPOND VOLUME R IR 1 4
PLAT RQUNQAPY--*' ,�� : : : / EQU ED= _3 ,9 5 C.F.
- WETPOND VOLUME PROVIDED 38,949 C.F.
• LENGTH TO WIDTH RATIO =3:1
ELEVATION AREA (SF) INCREMENTAL VOLUM
VERTICAL DATUM
CITY OF RENTON
Cf1Y OF RENTON, NAVD 88 pEPARTMENT OF PUBLIC WORKS
90
BENCHMARK
FOUND MONUMENT IN CASE APPROVED BY � DATE 9%49.9401r
CONC MONUMENT W /BRASS NAIL APPROVED BY DATE (��
SET 0.65' BELOW GRADE
CITY OF RENTON CONTROL
POINT NO. 478 EL= 391.016 APPROVED BY DATE
(JUNE 2012) APPROVED W DATE
3 REVISED PER CITY REVIEW
2 REVISED PER CITE REVIEW
1 REVISED PER CITY REVIEW
N0. REVISION
372
1.367
1,136
1,136
373
5,228
DESIGNED:
BJT
3,298
4,434
374
6.78
3/30/15
6,006
10,440
375
8,468
BJT
7,626
18,066
376
10.288
APPROVED
9.378
27.015
SCALE:
HMIZ.: 1' =20'
VERT.: 1 " =N /A
I ONE INCH
AT FULL SCALE
IF NOT ONE INCH
SCALE ACCORDINGLY
VERTICAL: NAVD 1988
HORIZONTAL: NAD 1983/1991
DATU M
A
SECONDARY INLE
C.O.R. STD DETAIL
ELBOW RESTRICTOR
JAILH(
IE =38
IE =37
010 CI C\ /ATI/lAl -ZQC �/1
oVl IV1Yl VF JV111117 LLCM= J /J.VV
SECTION VIEW_ A -A
NOTES:
1. REFER TO C.O.R. STD DETAIL 237.00
FLOW RESTRICTOR
CB#2 TYPE 2 -54"
1"=2'
PLAN VIEW
N 0 SCALE
A
TYPE
CB
NOTES:
1. REFER TO C.O.R. STD DETAIL 234.20
CB#2B
EMERGENCY OVERFLOW SPILLWAY
NOT TO SCALE
POND BERM EMBANKMENT NOTES
POND BERM EMBANKMENTS MUST BE CONSTRUCTED ON NATIVE CONSOLIDATED
SOIL (OR ADEQUATELY COMPACTED AND STABLE FILL SOILS ANALYZED BY A
GEOTECHNICAL ENGINEER) FREE OF LOOSE SURFACE SOIL MATERIALS, ROOTS,
AND OTHER ORGANIC DEBRIS.
EXCAVATE A KEY EQUAL TO 50% OF THE BERM EMBANKMENT
CROSS- SECTIONAL HEIGHT AND WIDTH.
THE BERM EMBANKMENT SHALL BE CONSTRUCTED OF SOIL PLACED IN 6 -INCH
LIFTS COMPACTED TO AT LEAST 95% OF MAXIMUM DRY DENSITY, WITHIN 2
PERCENTAGE POINTS OF THE OPTIMUM MOISTURE CONTENT, MODIFIED PROCTOR
METHOD ASTM D1557, WITHIN THE FOLLOWING SOIL CHARACTERISTICS: A
MINIMUM OF 20% SILT AND CLAY, A MAXIMUM OF 60% SAND, A MAXIMUM OF
60% SILT AND CLAY, WITH NOMINAL GRAVEL AND COBBLE CONTENT. NOTE: IN
GENERAL, EXCAVATED GLACIAL TILL IS WELL SUITED FOR BERM EMBANKMENT
MATERIAL.
/ATION 384.00
ORIFICE #2
IE= 381.95 (6")
ELBOW RESTRICTOR
ORIFICE 0 =3.00*
?ICTOR PLATE
SHOP DRILLED ORIFICE
'5.00
1.50"
R- 381413
OVERFLOW EL
CB #2B= 384.50
+� .t CITY OF DRAINAGE FACILITY PLAN AND 6E
- RENTON
COPPERWOOD
OUADRANT HOMES
Planning /Building /Public Works Dept. 14725 SE 36TH ST. SUffE 200
BELLEVUE, WA 98006
1,A-
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SURVEYED:
BCE
N
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DESIGNED:
BJT
BJT
4/22/15
BJT
RAG
3/30/15
BJT
DRARAG
BJT
1/15/15
BJT
CHECKED.
BJT
BY
DATE
APPR
APPROVED
SCALE:
HMIZ.: 1' =20'
VERT.: 1 " =N /A
I ONE INCH
AT FULL SCALE
IF NOT ONE INCH
SCALE ACCORDINGLY
VERTICAL: NAVD 1988
HORIZONTAL: NAD 1983/1991
DATU M
A
SECONDARY INLE
C.O.R. STD DETAIL
ELBOW RESTRICTOR
JAILH(
IE =38
IE =37
010 CI C\ /ATI/lAl -ZQC �/1
oVl IV1Yl VF JV111117 LLCM= J /J.VV
SECTION VIEW_ A -A
NOTES:
1. REFER TO C.O.R. STD DETAIL 237.00
FLOW RESTRICTOR
CB#2 TYPE 2 -54"
1"=2'
PLAN VIEW
N 0 SCALE
A
TYPE
CB
NOTES:
1. REFER TO C.O.R. STD DETAIL 234.20
CB#2B
EMERGENCY OVERFLOW SPILLWAY
NOT TO SCALE
POND BERM EMBANKMENT NOTES
POND BERM EMBANKMENTS MUST BE CONSTRUCTED ON NATIVE CONSOLIDATED
SOIL (OR ADEQUATELY COMPACTED AND STABLE FILL SOILS ANALYZED BY A
GEOTECHNICAL ENGINEER) FREE OF LOOSE SURFACE SOIL MATERIALS, ROOTS,
AND OTHER ORGANIC DEBRIS.
EXCAVATE A KEY EQUAL TO 50% OF THE BERM EMBANKMENT
CROSS- SECTIONAL HEIGHT AND WIDTH.
THE BERM EMBANKMENT SHALL BE CONSTRUCTED OF SOIL PLACED IN 6 -INCH
LIFTS COMPACTED TO AT LEAST 95% OF MAXIMUM DRY DENSITY, WITHIN 2
PERCENTAGE POINTS OF THE OPTIMUM MOISTURE CONTENT, MODIFIED PROCTOR
METHOD ASTM D1557, WITHIN THE FOLLOWING SOIL CHARACTERISTICS: A
MINIMUM OF 20% SILT AND CLAY, A MAXIMUM OF 60% SAND, A MAXIMUM OF
60% SILT AND CLAY, WITH NOMINAL GRAVEL AND COBBLE CONTENT. NOTE: IN
GENERAL, EXCAVATED GLACIAL TILL IS WELL SUITED FOR BERM EMBANKMENT
MATERIAL.
/ATION 384.00
ORIFICE #2
IE= 381.95 (6")
ELBOW RESTRICTOR
ORIFICE 0 =3.00*
?ICTOR PLATE
SHOP DRILLED ORIFICE
'5.00
1.50"
R- 381413
OVERFLOW EL
CB #2B= 384.50
+� .t CITY OF DRAINAGE FACILITY PLAN AND 6E
- RENTON
COPPERWOOD
OUADRANT HOMES
Planning /Building /Public Works Dept. 14725 SE 36TH ST. SUffE 200
BELLEVUE, WA 98006
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FIIELDBOOK:
PACE:
DRAWW NO:
SHEET:
14 OF: 37
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