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2' MIN.
SWALE SPACING DEPENDS ON SLOPE GRADIENT
NOTES
1. CONDITION OF USE
1.1. REQUIRED AT:
1.1.1. THE TOP OF ALL SLOPES IN EXCESS OF 3HAV AND WITH MORE THAN 20 FEET OF VERTICAL RELIEF.
1.1.2. AT INTERVALS ON ANY SLOPES THAT EXCEEDS THE DIMENSIONS SPECIFIED BELLOW.
2. DESIGN AND INSTALLATION SPECIFICATIONS
2.1. FOR SLOPES STEEPER THAN 2H:1 V WITH MORE THAN 10 FEET OF VERTICAL RELIEF, BENCHES MAY BE CONSTRUCTED OR CLOSER
SPACED INTERCEPTOR SWALES MAY BE USED. THE DESIRE MEASURE MOST BE DESIGNED BY AN ENGINEER TO EFFECTIVELY
INTERCEPT THE HIGH VELOCITY RUNOFF TO A SEDIMENT POND OR TRAP.
2.2. CONSTRUCTION TRAFFIC OVER TEMPORARY SWALES SHALL BE MINIMIZED.
3. MAINTENANCE STANDARDS
3.1. DAMAGE RESULTING FROM RUNOFF OR CONSTRUCTION ACTIVITY SHALL BE REPAIRED IMMEDIATELY.
3.2. IF THE FACILITY DO NOT REGULARLY RETAIN STORM RUNOFF, THE CAPACITY AND/OR FREQUENCY OF THE SWALES SHALL BE
INCREASED.
STD. PLAN - 217.10
'•r�+ PUBLIC WORKS INTERCEPTOR SWALE
A N - DEPARTMENT
MARCH 2O08
IT
AVERAGE SLOPE
SLOPE PERCENT
FLOWPATH LENGTH
CONSTRUCTION RECORD DRAWING
THIS CONSTRUCTION RECORD DRAWING IS A COPY OF
THE APPROVED CONSTRUCTION DRAWING PREPARED
BY OSBORN CONSULTING INC. AND HAS BEEN EDITED
USING INFORMATION PROVIDED BY OAK HILLS
CONSTRUCTION, LLC TO REFLECT ASBUILT CONDITIONS
SEC. 09 , T 23 N. , R. 05 E. ,
Y
ROCK MUST COMPLETELY COVER THE
m BOTTOM AND SIDES OF THE DITCH
6MIN. "
� � D
24" MIN.
2:1 SLOPES
Q� 2"-4" ROCK
v L = THE DISTANCE SUCH THAT POINTS
op�a a�ODb A AND B ARE OF EQUAL ELEVATION
1=1 11=1 11=1 I- — L aao
NOTES
1. CONDITION OF USE
1.1. WERE CONCENTRATED RUNOFF FROM DISTURBED AREAS TO AND FROM PONDS OR TRAPS.
1.2. TO CONVEY RUNOFF INTERCEPTED FROM UNDISTURBED AREAS AROUND THE SITE TO A NON -EROSIVE DISCHARGE POINT.
2. MAINTENANCE STANDARDS
2.1. ANY SEDIMENT DEPOSITION OF MORE THAN 0.5 FEET SHALL BE REMOVED SO THAT THE CHANNEL IS RESTORED TO ITS ORIGINAL
DESIGN CAPACITY.
2.2. THE CHECK DAMS SHALL BE EXAMINED FOR SIGNS OF SCOURING AND EROSION OF THE BED AND BANKS. IF SCOURING AND EROSION
HAS OCCURRED, AFFECTED AREAS SHALL BE PROTECTED BY RIPRAP OR AN EROSION CONTROL BLANKET.
6ti�Y 0„�,
PUBLIC WORKS CHECK DAMS SPACING AND STD. PLAN - 217.40
AeR ,f,N�o$ DEPARTMENT CROSS SECTIONS
MARCH 2O08
55—GALLON DRUM
LID 1/2—IN WITH HOLES
CONTRACTOR TO FIELD LOCATE FORCE
MAIN TO SEDIMENT TRAMP/BAKER TANK
55—GALLON DRUM
WITH HOLES OR 3/4" WASHED ROCK (TYP.)
EQUIVALENT
L O O O C
y'/y'\ 000 vo yy\�
PUMP PER CONTRACTOR 0 0 0
O O GEOTEXTILE FABRIC MIRAFI
° 140N OR EQUIVALENT
PUMP TO BE SUPPORTED
BY BRICKS OR APPROVED
EQUAL. PUMP SHALL BE
MIN. 2" OFF OF BOTTOM.
DEWATERING PUMP
N.T.S.
APPROVED BY:
APPROVED BY:
APPROVED BY:
APPROVED BY:
DATE:
DATE:
DATE:
DATE:
R-400308
Know what's below.
Cali before you dig.