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CRUSHED SURFACING I O' W o M 0'
TOP COURSE
2 4-.3 IMPORTED BACKFILL 30 MIL PVC BASIN LINER, TYP. iA ~O, ■7 o y o
IMPORTED BACKFILL-7 EXISTING GROUND xo r4 m w F 10
/ T.O. EMBANKMENT EL 115.17 CL w o w rn F :D
aQ owo-I
113.77 a�a7 �rnmw
3 BASIN BOTTOM E- 108.67 - - - -_4 --
+1 - ---- - - --
1 F
-- -' $r
---------------------------- ------ -- ------- - -- - - -- LIMIT OF EXCAVATION
A -A
t>ELETF-D (SHEETS 2 AND 5)
SCALE 0 5 10 20 FEET
1' = 101-0"
VEGETATE WITH LOW GROWING SHRUB
AND HYDROSEED FROM EL 114.0 TO EL 115.0
MATCH EXISTING SLOPE
MIN. NORMAL WS EL 111.5 -�
LINE DITCH W/
QUARRY SPALLS
GROUND
i
PIPE-/ '
3
EMBANKMENT
PK BWT vG1A10.
(TYP. ALL PIPE PENETRATIONS)
SCALE O 2 FEET
twp =i9 -ses7
:LETED B - B
(SHEETS 2 RAND 5)
SCALE 0 5 10 20 FEET
1' - 101_0•
VEGETATE WITH LOW GROWING SHRUBS AND
HYDROSEED FROM EL 114.0 TO EL. 115.0 VEGETATE DISTURBED
VEGETATE WITH GRASSES AND FORBS SLOPES ABOVE
MIN. NORMAL WS EL 111.5 - FROM EL 111.5 TO EL 114.0 EL 115.0 WITH DEEP
I,D• TALLER GROWING
GROUND BASIN BOTTOM EL 108 67 t 5 IMPORTED 30 MIL PVC BASIN SHRUBS AND
LINER, TYP. HYDROSEED
5' CRUSHED SURFACING TOP BACKFILL 2,
` I. COURSE, MATCH EXISTING GRADE
- - - - -- OVEREXCAVATE AS
REWD TO ANCHOR
-+� --- 3---------------- --- - -�- -- - - --- -- -- -- -- 3.v �G i LI NER
BOULDERS TO MATCH
EXISTING EL 114 2'
TOP OF LINER
EL -112.0 EL 112.0
-------------- ------- - - - - -- - i
5= 0 Q 20 FT/FT_ STANDARD LINER ANCHOR TRENCH,
TYPICAL ON ALL EDGES
VEGETATE DISTURBED
SLOPES ABOVE
EL 115.0 WITH TALLER
GROWING SHRUBS
k AND HYDROSEED
r
~EXISTING GROUND'
-OVEREXCAVATE AS
IMPO CKFI RTED yam/ -- • �,��a` �i ��0� ` 4 �\
BALL
\ \
• 1 1 Volume Ice �
DELE'reD (SHEETS 2 AND 5) Mopelwood Sedimentation Basin Pond
As -o °ani Sediment 'oos- Data
Elev
(h)
u ace
Area
(so
I ncremen
Volume
(cf)
o a
Volume
(co
100 -Year Storm Pool
114.2
13,400
16,100
49,700
Main Spillway Crest
112.7
10,700
14,700
31600
Fishway Weir
111.2
8,850
16,900
16,9W
Basin Bottom
109.0
6.500
0
0
i
2' X 1/4' THICK NEOPRENE I MATCH EXISTING 1 �,` �'l I rl ', r LIMITS OF PVC
DOUBLE GASKET CONTINUOUS I` . 1 i $ BASIN LINER
BAND CLAMP tr' D04AT ! '!` ii {lllrir,l:l
COMPA7181.E ir SEALANT 2' X 1/4' THICK S.S. FLAT BAR ° ° v RECOMMENDED
ur.[oEfz La.Ai
3/8' X 3 "" LG. S.S. WEDGE TYPE ANCHOR ,
BOLT WITH NUT AND WASHER O 12" O.C. °
N Z
v �
PVC BASIN LINER , z
v N �
v
� C v
8" SUBDRAIN PIPE SCHEDULE
NODE
DESCRIPTION
NORTHING
EASTING
INV. EL.
S1
BEGIN OF PIPE
N 176150.28
E 1311524.54
107.0
S2
45' ELBOW
N 176055.42
E 1311490.59
106.55
S3
45' ELBOW
N 176052.48
E 1311492.09
106.53
S4
ENO OF PIPE O SPILLWAY
N 176050.34
E 1311489.73
106.52
LAMOU'll FL.PMN FOR APPROVAL
(ILLUSTRATES SUBDRAIN AND VEGETATION LIMITS)
SCALE 0 10 20 40 FEET BY
I 1 I 1 BY
1' = 20' BY
0 NOTM
440457 af 1. ALL PIPES SHALL BE SOLID DOWNSTREAM OF
POND LINER.
° 2. SEE SPECIFICATIONS FOR REVEGETATION
CLEAN SAND SEE SECTION E -E, SHEET 6 FOR SUBDRAIN DETAIL
'REPARED SUBGRADE ° PO$ OF THE SEDIMENTATION BASIN FOR
LE E D , ' ®� F WA TL�� PLANTING DETAIL (BID ITEM 28).
" 0
El FORBES AS ONLY ;KITH GRASSES AND NORTHWEST, INC. ���' 'p CITY OF RENTON
FORBES AS SHOWN AND TO EL 114.0 Engineers and Scientists
TMAL ����n /yy�p� /��� Bellevue, Washington DEPARTMENT OF PUBLIC WORKS
1 1 f �:AI"L BASIN UNER/CONCF G 1 G ATTACHMENT MTAIL 2353 -1307H AVE NE, SUITE zoo 23792 Q'
BEULEWIn WASHINGTON 98003 MAPLEWOOD CREEK SEDIMENTATION BASIN
(TYP. FOR BASIN LINER ALONG ALL CONCRETE STRUCTURES) PLANT WITH LOW GROWING SHRUBS AND FAX (206) 883'7555 3IONAL FNG
HYDROSEED BETWEEN EL 114.0 AND EL 115.0 TEU (206) 882 -z465 RECONSTRUCTION AND IMPROVEMENT PROJECT
SCALE 0 1 2 3 4 INCHES E)WRES 12 -21 -97 BASIN PLAN, SECTIONS AND DETAILS
1 , 1 1 1 I PLANT WITH TALLER CROWNING NATIVE
DESIGNED: NTD /RSP HNW DATE: 7 -15 -96 FILE NAME: SHEET5
3' - V -0' SHRUBS AND HYDROSEED IN DISTURBED DRAWN: C,L.C, HNW
AREAS ABOVE EL 115.0 A A5•BVILT NOTES ADDEO DWH CHECKED: D.E.P. HNW SCALE: AS NOTED nEw sooK; PACs:
NO. REVISION BY APPR. DATE APPROVED: SHEET; 5 OF: 10
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