Stormwater Pond DetailsTYPICAL STORMWATER POND DETAIL
(N.T.S.)
OUTLET BOX DETAIL
NOT TO SCALE
PL
10 ACCESS
10' ACCESS 1/2" ROD 4" oc — ---
EASEMENT
EASEMENT
TOP - 30.40
TOP BERM -- 34.00
'
rxasx GUARDS
EXISTING
KI ELEV. 100 YEAR STORM
32.41
'
' �'
DLlAIOND iIIRE i1x17'i
NAX HOLE OF 2 112"
RING
(-
GRADE
_____..�
.�
ELEV. 25 YEAR STORM —
32.13
EMERGENCY SPILLWAY
•
ELEV. 10 YEAR STORM =
31.84
PRIMARY OUTLET STRUCTURE
ELEVATION = 32.00
REFER TO DETAIL ON THIS SHEET
ELEV. 2 YEAR STORM -=
31.35
FOR OUTLET DESIGN REQUIREMENTS
4.1
4:1
REFER TO SECTION 70 FOR
SLOPEL:
SLOPE
SPILLWAY DESIGN REQUIREMENTS
TEMPORARY POOL ELEV
= 28.90
�
0
10' MIN.
0
10' MIN.
TOP VIEW SIDE VIEW
PL
NORMAL POOL
= 28.00
TOP OF FOREBAY DIKE = 27.60
ORIFICE---
ANTI -SEEP COLLAR
8:1
SLOPE
6:1 SLOPE
PIPE SIZE .� 36" A
— 3:1
3:1 FOREBAY -- 24.00 BOTTOM
= 24.00
,,.,INVERT = 28.0
INVERT OUT = 27.91
SLOPE SLOPE 3:1
3:1
A
SLOPE
SLOPE
Ll
I
8" X 14" 1.�IJj
TO ATTACH SKIMMER
TO OUTLET BOX
TOP VIEW NOTE: TRASH GUARDS NOT SHOWN
IN THESE VIEWS
TOP ELEV = 30.40
' ; 2 10" X 24" ORIFICES
TYPICAL SEDIMENTATION POND DETAIL INVERT ELEV = 28.90'
P-23
WITH SKIMMER OUTLET
(N.T.S.)
PIPE DIA = 36"
PIPE SLOPE = 0.2%
PIPE INV = 28.0
BOX INV ELEV= 28.0
ORIFICE DIA = 3.5"
BAFFLES 1' FREEBOARD •° •• • • ORIFICE INV - 28.0
EXISTING GRADE
} SECTION A --A
4" FAIRCLOTH
SKIMMER WITH EMERGENCY SPILLWAY END�oF oR�i E GUARD OVER
FULL ORIFICE 6 MIN. INVERT L'LEVATION�
OF EMERGENCY SPILL WA Y
F_ \\ I F __
DETAIL OF SKIMMER
ATTACHED TO OUTLET BOX
REFER TO DETAIL
ON THIS SHEET FOR
SKIMMER ATTACHMENT �OUTLET BOX OR OUTFALL PIPE
NOTE: SKIMMER TO REMOVED (INCLUDING PLATE)
WHEN POND IS CONVERTED TO A STORMWATER POND.