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11,412 SF LOT DISCONNECTION
2,696 SF HOUSE (TYP.)
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BEGIN REVERSE
C RB TRANSITION
T.V. PEDESTAL
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NEW 15" HDPE STM. SEWER
NTERED ON PROPERTY LINE
i 3' UTI Y EASEMENT
4" ROOF
DRAIN (TYP.)
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UNDERGROUND
TELEVISION
LINE
i 11,716 SF LOT
2,696 SF HOUSE i \
FFE=504.0
I NEW 20' ACSA
11,522 SF LOT SANITARY SEWER \
2,696 SF HOUSE EASEMENT
FFE=509.3
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10 UTI ITY EASEMEN
STACKING BLOCK ^ o SC�
RETAINING WALL
2.7' MAX. HEIGHT
'a T.V. PEDESTAL -
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20 0 20 40 60 °
Scale: 1 "=20'
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48 DOGHOUSE ---
MANHOLE WITH
EXTERNAL DIP DROP
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T.V. PEDESTAL
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PHONE PEDESTAL
ELEC. TRANS.
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DETENTION
SEE DETAIL 7/C1
/
OPEN SPACE
DEDICATED TO H.O.A.
27,555 SF
i
LOCATION OF BIOFILTER P R APPROVED WPO PLAN
LOCATION OF PROPOSED DETENTION FACILITY i
SEE DETAIL SHEET C2
VAULT 5 TO HAVE ORIFICI- WIDENED
SEE DETAIL SHEET C2
VA
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6 / \TOP=490.27
INS/,• IN=482.52
INV. b T=482.42
APPROVED
by the Albemarlo County
2�/ Dat�munity D�1. el cle t D
QT ePartmenf
File —.-
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v LUJSTIN M. SHIMP
Lic No.45183
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Date
03 17 2017
Scale
1 "=20'
Sheet No.
C1 OF 2
File No.
13.029
PROP.
THE DETENTION SYSTEM SHOWN ABOVE FUNCTIONS SIMILARLY TO GRADE
THE APPROVED BIORETENTION SYSTEM IN REGARDS TO mm_
STORMWATER QUANTITY._
WATER FROM THE CATCHMENT AREA ENTERS SYSTEM, FILLS IT UP 15 HDPE
TO THE LIP OF THE 80' SPILL -WAY, AND OVERTOPS IT TO FLOW —,Q.po%,,
EAST AS SHEET FLOW. THE PEAK FLOW OFF THE DEVELOPMENT IS 1—J 11_
REDUCED FROM THE PRE —DEVELOPMENT PEAK: 0.32 CFS TO 0.13 NOVAEJ�
CFS FOR THE 1—YEAR STORM, AND 3.29 CFS TO 3.03 CFS FOR FABRIC WITH 'Al
THE 10—YEAR STORM. OF > 110 GAL.
THE MAIN FUNCTIONAL CHANGE FOR THE DESIGN IS TO
STORMWATER QUALITY. THE BIORETENTION SYSTEM TREATED
ENOUGH PHOSPHOROUS TO ACHIEVE WATER QUALITY COMPLIANCE
FOR THE SITE. THE RETENTION SYSTEM WILL NOT TREAT
PHOSPHOROUS, AND STORMWATER QUALITY CREDITS WILL BE
PURCHASED INSTEAD.
a'..a' nor TOCATUCAIT 0EA i W9' E)PP-TWATUPKIT (`GI I
6'x6' PRE-TREATMENT CELL
EX. GRADE VDOT #57 LINED WITH
FILTER FABRIC /
STORMTECH MC-4500
OR EQUIVALENT
DETENTION PLAN AND
1" =5'
BUILD UP GRAVEL TO
FORM A SMALL DAM
VDOT #3
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EX.
CROSS—SECTION
�00,
0
O Alt l
PROP. 6"X6" TREATED LUMBER
GRADE STAPLE FABRIC TO INSIDE
FACE OF TIMBER
STORMTECH MC-4500
OR EQUIVALENT
4 LIP OF SPILLWAY AT
EXISTING GRADE
(, g-Y(FACE
tnELEV=49�
5 0.
R
�r--SS
AEATED BRICLTOBER INSIDE
APLE
OF TIMBER
%DOT #3 _ (WOVEN GEOTEXTILE
WITH
GAL./MIN./SF
FLOW ATE
MH-1 FLAT TOP
ELEV=502.74
(D 5.0' 3' TALL„( tvt};O„ 41 y(479.0 O
WEIR PLATE
10-YR WSE=498.240 4.0' 15" HDPE 10-YR WSE=498.24 0
1-YR WSE=497.17 0 ® 0.50% 1-YR WSE=497.17
= L(n TO STM 6
HDPE ELEV=496.0 15" HDPE
INFLOW WIRE MESH SCREEN 0.62%-FROM-
PROFILE VIEW STM 4
SECTION
4.0'
U
- ,
REINFORCED STEEL
WEIR PLATE
15" HDPE
0.61% FROM
'!i% ovmkl,�
ELEV=496.0
3"H X 24"W 1-YR ORIFICE
WITH WIRE MESH SCREEN
2 VAULT DETAIL
C2 P=5'
To 1jw' 4taoc'-
H op
f
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DSTIN ,VI. SHIMP
Lie. o.45183
ZI j pek
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Date
03/17/2017
Scale
1 "= 5'
yiiMa►ra
C2 OF 2
File No.
PLAN VIEW
13.029