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LANE E 46
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LOCATED IN THE S. W. 114 OF
OF SECTION 1 O TOWNSHIP 23 NORTH
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HOUSE
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TOE OF ROCKERY
0. 6' N. OF
BDY LINE
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74 — — — —�— -2
N
END OF WOOD
RETAINING WALL
APPROXIMATE NEW HOME
SIZE & LOCATION
DRIVEWAY
DISPERSION, DTL 2/2
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GRADING AND DRAINA GE PLAN
1 "=20'
y S.KRU£G
Cramer, Northwest Inc. IT��
ENGINEERS, SURVEYORS & PLANNERS
36049
945 N. CENTRAL, STE. #104, KENT, WA 98032 S FG/STE��'
(253)852-4880 (local) or 1—(800)251-0189 (toll free) (253)852-4955 (fax) NAL
E—MAIL: cni®cramernw.com F EXPIRES 11/26/2009
ASPHALT EDGE
FX SFWFR
VIIIi I
248.6' EAST OF
SSMH #1
R6
6
iHE N. E. 114,
RANGE 5 E, W.M.
NOTES:
1. This trench shall be constructed so
as to prevent point discharge and/or
erosion.
2. Trenches may be placed no closer
than 50 feet to one another. (100 feet
along flowline)
3. Trench and grade board must be
level. Align to follow contours of site. —
4. Support post spacing as required by
soil conditions to a-isure grade board
remains level.
" notched
grade board
2 x 2" notches
18" 0. C.
A
18" 0. C. o
_I ''II N
i41111_ 2„
2" grade
board notches 2"
galvanizf:d bolts
2" x 12"
pressure
treated grade
board
c x
g
04 i0
r Pj
4" x 4' support post
E
filter fabric
pipe O.D.
1'-0 1'-0
min min end cap or plug
• clean out wye from pipe
r ►� r 4" or 6" perforated pipe laid flat/level
r
,r
r 'r
I • I type I CB w/solid cover (locking)
A•
r influent pipe (max design
flow < 0.5 CFS per trench)
• r I�
A!:&
• clean out wye from pipe
AN, I
•
e
PLAN
NTS
pipe O.D.
1'-0 1'-0
min m i n 20q° roo'` ��
° Q 00
0 D
Q ° o
0 0 °° O 4" or 6" perforated
° pipe laid flat
° �D °D
Q ° 0
0 Q DD
— o
O Q Q
D clean (�5% fines)
° °0 0 0 11f2-3/4 washed rock
Q O D
Q Q ° ° n
*15% max for flow control/water quality SECTION A -A
treatment in rura areas. NTS
DISPERSION TRENCH
NTS
2-FOOT WIDE, --�
4-TO-6 INCH DEEP,
STRIP OF CRUSHED ROCK
IQ ..
13
"rzz�rz �10-FOOT VEGETATED-Z� i�
�FLOWPATH SEGMENT
!''. 65
--�.:
:.SLOPE•:• ::.:.:.:.:::.:.:.:.:....
r:
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SHEE'• FLOW DISPERSION FROM A DRIVEWAY PLAN
FLAT TO MODERATELY SLOPING DRIVEWAYS
DRIVEWAY DISPERSION
NTS
flow to second
dispersal trench
if necessary
flow to other
branching CB's
as necessary
over
CHECKED FOR COMPLIANCE
TO CITY STANDARDS
Dated 09~
Date
Date
SURVEYED: ScxE: DATE:
CNw HDRM�AL � 11"31"1 1 I r1, O F LIAO SHORT PLAT 9/26/08
DESIGNED: -20 4I }!�
DRAWN. LSK R E N TO N FOR M E I L IAO MUDS".
HCO ONE INCH DATUM DRAWING NO:
1 REVISION PER COR KLH 1-12-0 CHE`KD• IF NOT ONE INCH g� g�Dept.GRADING AND DRAINAGE PLAN
LSK AT FULL E INC Plannin Buildin Public Works 2
NO. REVISION BY DATE APPR O : SQU ACCORDINGLY SHEET. Df.
k, Lf T�03 IAHNINININIAV
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