SW3160601_APPROVED PLANS_20160617

STORMWATER DIVISION CODING SHEET
POST -CONSTRUCTION PERMITS
PERMIT NO.
SW
DOC TYPE
❑ CURRENT PERMIT
APPROVED PLANS
❑ HISTORICAL FILE
❑ COMPLIANCE EVALUATION INSPECTION
DOC DATE
YYYYMMDD

SITE AND DEVELOPMENT DATA
xz JURISDICTION UNION COUNTY
TAX PARCEL(S): # 09 363 013C ^ �o
SITE ADDRESS: 4712 W- HWY 74 - - ,� UXD m
tc�.: a u ZONING HC Q Z p oF�o
PARKING REQUIRED (45.030) 2 SPACE I SERVICE BAY =REQ PARKING-W�'
w, �'- _ 1 SPACE/ SW SF OFFICE/CUSTOMER + p" .fin
9,650OFFICE/3W--32SPACES a W
13 SERVICE BAYS 2= 26 SPACES - 112" -
x 5s REQ SPACES EIP Z o
# x TOTAL AREA 6.002 AC. N
PROPOSED 20' PUB HIGHWAY 741NVESTORS 4- d U N
DRAINAGE EASEME T
`> •' ' -3 " .,#C .fv `", CENTERED ON EXIS ING BK. 411, PG. 86 q z CI
PROPOSED DEVELOPMENT AREA 186,050 SF DRAINAGE PATH AN TAX PIN 09.363-013 I Z f> 100
NOW OR FORMERLY
e e DILATED FRO z F v
EXISTING / OF LOT WITH STRUCTURES 1000 SF / 0.1 � ZONED"HC" METAL W W i o
a N.C.D.O.L LIDAR - BUILDING 4 • ��,,
g FINAL OF LOT WITH IMPERVIOUS SURFACE 72t % TOPOGRAPHY DATA I •, S
PARKING SPACES PROVIDED 335 + 3 HC I N S
V icin ity .Map .\ $47"19'12"E 1/2"NIR
SECTION 10.030 HC REQUIRED PROVIDED �-` _(- .� �434.54•0 ^ DREXIE HOLDINGS, LLC
NOT TO SCALE MIN SIDEABUTTING R ZONE ON CORNER N/A N/A _{ 1 _ t/2" M
BK. 3630, PG. 884 i
- $ TAX PIN 09.363-0071A w
MINIMUM FRONT SETBACK 40 FT 150 FT � -I-,-
{ NOW OR FORMERLY �
MINIMUM SIDE SETBACK 20 FT 51 FT I I i 40 REAR SETBACK ZONED "HC" w w
I zzw
HIGHWAY74,NVESTOR3 { j - - - - - - UI
MINIMUM REAR SETBACK 40 FT 305 FT BK.1424, PG. 500 i U U n
TAX PIN 09363-013 ! { I' i
T - TRANSITION
f Sao
MAXIMUM ►ND BUILDING AREA NO MAX 19,173 SFt NOW oR FORMERLY saND FLTER7 I
EIP EXISTING IRON PIPE MINIMUM LOT SIZE N/A 6.0 AC ZONED "HC" I ( I DRY w a LOU ga
PROPOSED FRAME BLDG. Y O F
MINIMUM LOT WIDTH �' POND ENCLOSURE �� SLAB
CONC. g 0 0
EIR - EXISTING IRON REBAR DETENTION IY O O z
NIR -NEW IRON REBAR N/A 434 FT � I {
S.T. - SIGHT TRIANGLE MINIMUM LOT DEPTH WA 416 FT ' - sue O 3 3 w
M.B.S. - MINIMUM BUILDING SETBACK - - - _ M O OIL
PS.D.E. - PUBLIC STORM DRAINAGE EASEMENT MAXIMUM LOT COVERAGE WA 80 - FUTURE 60' { { `'Sp. -� ! - - ' � z > > w
S.S.E. -SANITARY SEWER EASEMENT I i ,N i. G.IB m IDi
CR
SSMH - SANITARY SEINER MANHOLE MINIMUM LANDSCAPED AREA 10 % 20 % IEASEMENTG ( I { p �- i S = z
OO»7
RN - P.S.S.E.
- PR VA WAY STREET YARD REQUIREMENTS
YES WA I i i a _ o o o
GPUEIr
E. - PRIVATE SANITARY SEWER EASEMENT `r." s' R2 ,os+•.vcEs .. � orEE ?; : ELtpwrEe ; ah - vEw LE I ^ OREXIE HOLDINGS,. LLC z w z z w
GPUE -GENERAL PUBLIC UTILITY EASEMENT 50 FT TBD I I �' �t z -
MAXIMUM BUILDING HEIGHT w W EMPLOYEE
W PARgNG PARKIRO ` I 2 U Z 2 N
A n+ INVE BK. 3630, PG. 887
C.P. - COMPUTED POINT � { { y V PARKING awLoYEE � -. �'; ; -. TAX PIN 09463-009A O z > > Lu
ECM -EXISTING CONCRETE MONUMENT NW W NW rn F
EP.K. •EXISTING P.K. NAIL - - ( ( I m I PARKING I
22 - r - - SER4ICE SERVICE NOW OR FORMERLY I N M N w
Cti - HANDICAPPED PARKING ( w
:'8 m PARADING PARKING R3 l` WIRE ZONED "HC" K K H
} I I I. �_..i .t . 1 FENCE D
PAR�gNOG I i { 20 Rz ° £ :. 9, l\ - - ! h
® -TRANSMISSION TOWER j I s
- UTILITY POLE
m Sam
I ( R1 R2 R2 R2.S " 19, J ro a a a a a
----0"&`--o"&-UNDERGROUNDGASLINE �- vExlcl-E I ( - ( v 6 '
Pt1u - OVERHEAD UTILITY LINE _ _ T DISPLAY
w aa� arm
CAR HAULER CUSTOMER _ (� W W C ril
IS UNLOADING i PARKING I o o � o 0
- - - -as - - SANITARY SEWER LINE vEHwLE
I _--- - _ � F. 1 O
I "y 3 z �tH+i4Ui
OO - SANITARY SEWER MANHOLE - N) m d- INVENTORY PROPOSED Ka sILLEB AND a
- - `ADA ACCESSIBLE ROUTE GROSS FLOOR AREA. 19,173 SF
-FIRE HYDRANT �PaR�iuN� N SERVICE FACILITY
- WATER VALVE - - - _ _ { I , �. �, (SE ADA NOTES THIS SHEET) _ I I VEHICLE
19' 24' SERVICE SAYS • 9A93d SF
'I 101/2": NIR OFRCEJCUSTOMER-1
261,460 sq.ft.
® -WATER WELL I Qhy 2� />�L'iS - - - _ 3 SPACES { ( m R1 - 6.002 acres R3 vlsxK:LE
HIGHWAY 74INVESTORS INVENTORv I
\ i DAN BLASKO
-YARD INLET /AREA DRAIN 8• - _ - - -- - - _ _ _ - \ ( z it R2 SK..411, PG..85 cusTDMFx 20r SK-1832, PG. 656 . .
` rp�ro ro TAX PIN 09463-013C !.
I I + I I I I I+ �-MOUNTABLE CURB I %n - - - - -.. J % PARKING TAX PIN 09363-009 -
-.RAILROAD TRACK m aim
a I � J y q, NOW OR FORMERLY NOW OR FORMERLY r 1
ZONED"HC"
® MONITORING WELL / •. I:.. .: I �1/2 ZONED HC
N VI� a
-FLUSH CURB I - 8 : ♦ g Y 1� •1 A
®- ELECTRIC BOXITRANSFORMER: 1O SPACES / •SPACES / J @
VEHICLE � CUSTOMER c> EASEMENT TO MONROE
DISPLAY g- VEHICLE PARKING E-3 25.5 ro TELEPHONE CO. 0
- CURB INLET HEAVY DUTY PAVEMENT 1 I I ` • • • % e INVENTORY w (BK.130. PG.310)
VEHICLE / a R3 H TO CUT AND TRIM TREES Mi.(
---so- -STORM DRAIN DISPLAY DISPLAYDE I �C / 19• y1• -19' �-- ----------- -- °--M1g -I O AND UNDERGROWTH
I Qh• m WITHIN 10' OF POWER LINE I /�/ C-'� a a
_� �--- ( o (CONTRACTOR _FBI
- - - -w -WATER LINE ❑-STANDARD DUTY PAVEMENT - - FUTURE 60' h�y) L.i tNGRESSOEGRES3 � l r -A1 I � � ,': vExKIIE a COORDINATE RELOCATION) W
X-----K- FENCELINE ADA ACCESSIBLE ROUTE PLAN EASEMENT i r .
R2 r _ I__ 9 DISPLAY
rw p > 5
Iy • CUSTOMER' �t
„ �.• -HEAVY DUTY CONCRETE PAVEMENT A' �+ 1 - _
3/8" EIR
.ZONING LINE \ I 1 V \7 ET A) 1 / " +o' 1 _ ?b I PARKING I - L x - - �'fE - • - s" h
-- - - -T-UG - - -THUG -UNDERGROUND TELEPHONE PAVING SPECIFICATIONS - / I { 2 11'I` y'Y� --rw g• ssvncEs I - � - - . �y
NOTE: PAVEMENT SECTIONS CONTAINED IN THIS PLAN SHALL BE vexKLE -S -
GRAPHIC SCALE / t DISPLAY __ N +- R, `d py Ei Z
t t w 0 v r/s
PARKING CHART: REVIEWED AND/OR MODIFIED BY A LICENSED GEOTECHNICAL . vExgLE
R3.- .".R". - -- R3 _ssP 4R7 P�
ENGINEER RETAINED BY THE OWNER. THE CONTRACTOR SHALL 0 20' 40' " DISPLAY I x
PURPOSE #PROVIDED COORDINATE K17H TEH GEOTECHNICAL ENGINEER PRIOR TO THE HIGHWAY 741NVESTOR3 ` 5 STOP SIGN u1 -
t &BAR I I I VEHICLE
VEHICLE DISPLAY 190 SPACES BEGINNING OF CONSTRUCTION. BK..1424, PG. 500 TTDIS
LE DISPLAYTAX PIN09-363-0138 veNK:LE Va.Pur I
VEHICLE INVENTORY 65 SPACES HEAVY DUTY PAVEMENT: ( 1N FELT NOW OR FORMERLY 5't• ' DISPLAY y
CUSTOMER PARKING 26 SPACES
ADA 3 SPACES 8' AGGREGATE BASE (GAB) L inch 20 ft, ZONED "HC"
EMPLOYEE PARKING 45 SPACES REF.: PRELIMINARY MINOR g R3 R3 -
2.5" BINDER COURSE (19mm SUPERPAVE APPROVED NCDOT MIX) L=31-09 k=100.00 5T 25.5 I
SERVICE PARKING 17 SPACES - SUBDIVISION FINAL PLAT 5T 19
1.5" SURFACE COURSE (9.5mm SUPERPAVE APPROVED NCDOT MIX) 30.96 N51'3T44"E R1 R1 R3 Rt
TOTAL PROVIDED 346 SPACES PREPARED BY R3
STANDARD DUTY PAVEMENT:
LAWRENCE ASSOCIATES, I I R7 -x _
NOTE: LAST REVISED9.2344 5T` -`s �.. DISPLAY
..' N 2 CHAIN
6 AGGREGATE BASE (GAB) I 1 /2 N R Q vExK LE I VEHICLE wsvur LINK
1.NO INVENTORY OR VEHICLE DISPLAY ALLOWED WITHIN THE 2 BINDER COURSE (19mm SUPERPAVE APPROVED NCDOT MIX) VEHICLE I r I i m I p IPLAI I I I FENCE I
REQ'D SETBACKS. I' SURFACE COURSE (9.5mm SUPERPAVE APPROVED NCDOT MIX) 4 DISPLAY m II
I W I a II A s I s ACEs +o ePress >'sPecea Rt Rt
R3 R1 R1 sP I � R3 GREEN PROPERTY, LLC GREEN PROPERTY, LLC
2.THOUGH IT MAY NOT BE ILLUSTRATED, SHOWN, LISTED DENOTED; HEAVY DUTY CONCRETE PAVEMENT: Z I n I I CIA' 9' SK.5562, PG.472 SK.5582, PG.472
OR EXPRESSED THIS PLAN SHALL COMPLY WITH ALL PROVISIONS N TAX PIN 09-363-011 TAX PIN 09353-010
6- AGGREGATE BASE (GAB) I �. 1 R3 ssP�c� R3 0� I R3 osrnces R4• NOW OR MLE'FORMERLY NOW OR FORMERLY
OF THE UNION COUNTY LAND DEVELOPMENT ORDINANCE IN EFFECT 6' THICK 4,000 PS! CONCRETE I aP Wx
AT TIME OF REVIEW AND APPROVAL. m roIS
� ro vEgcLE DSPUY ZONED "HC" ZONED "HC I a
aSPLAY a a
BACK OF CURB RADII - ' / I 112 EIR
1/2" EIR 4tY FROM PROPOSED POINT OF BEGINNING - w N
R1-RADIUS- - _ t I IJ MOUNTABLE
MOAUMENT SETBACK 1!2" NIR
R2-RADIUS=3.75' N4rlWI2"W 446.18' CURB I u
Mcx _ _ - N:476351.23 �
RgUBLICS47"19'12"E 506.18' LP E:1516602.70 u
R3-RADIUS=4' - tti 1/2"EIR FLATI NAD83 (2011)
1/2" NIR 10'X70' SIGHT
UNLESS OTHERWISE INDICATED .L TRIANGLE - -y 2' EIP .� S4T45'42"W
NOTE: NO SIGHT LIGHTING INCLUDED ON THESE PLANS / � �] 3 : 49,666 sq.ft• .' I S47*4 I -
ADA ACCESSIBLE ROUTE INSTRUCTIONS TO CONTRACTOR -Gae• - - - -GAs - - -GAS, - - "cAs---- - - -cAs• - - -GAs - - -cae• - - - 1.440 U s. I
---_ -j17 - aR ---G-----P----- I --
CONTRACTORS SHALL EXERCISE APPROPRIATE CARE AND PRECISION IN CONSTRUCTION OF - -sD' /- 'A'M IN $ - - - - - -• - - - GA& - - - -FTWY c - - - - - - - . - - - - -
ADAACCES
CD
SIBLE COMPONENTS INDICATED ON THIS SHEET. CESE40MY RULESS, AS Cy ...___.v", WEST BOUND LANE �' _ - -- _..__ _._ _..._ _..._All - rn CONSTRUCTED, MUST COMPLY WITH STATE AND FEDERAL ACCESSIBILITY RULES AND ----�--��- - - ---- - ---- --- ---- `�--_-� -- ml _ (
N SL 551 CrrY LIMIT -._.__._,_ __._...__... _- _ _ �
/ WEST BOUND LANE _ -.-�...��._.... .-._ _.._
REGULATIONS. FINISHED SURFACES ALONG THE ACCESSIBLE ROUTE OF TRAVEL FROM - .. -. _...._-._ _� � __. - ...._ _.- -_ .�. - -_ -_ ._ _:. _.:_ -� -.-- - - ----- """�' WEST BOUND LANE �' I
PARKING SPACE, PUBLIC TRANSPORTATION, PEDESTRIAN ACCESS, INTER -BUILDING ACCESS, / / WEST BOUND LANE ._ _ _-_----.y- - P zz
_. _ EC ___...__ .._.___-..._._..-.. __-_-E-OP_....____._.. __..._ __� DECEL. LANE' I
TO POINTS OF ACCESSIBLE BUILDING ENTRANCE/EGRESS, SHALL COMPLY WITH ADA & . _"- " ---""-. ____'_ - 660.26 "___' _- __..__. . -- . _.. _. _ -__. _. _....... __._-_ . ___.._,..._ EDP ` �.... .. ___,,. _.-,_ ._.-___.
BUILDING CODE REQUIREMENTS. THESE INCLUDE, BUT ARE NOT LIMITED TO THE FOLLOWING: GRASS MEDIAN --- -- -- _497.31 _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
PARKING SPACES AND PARKING AISLESSLOPESHALL NOT EXCEED 2.0%INANY DIRECTION. GRASS MEDIAN ECQ1/2"EIP - - _ - - '- 7 J-'-•- F.QR•--•.................................................
•-•-•-•- -•--•N47"19W"W '� - - - - J GRASS MEDIAN
L EDP -.,. _ ,-_ ._ GRASS MEDIAN _ ..- V1
__.._...._� ._..____.._ -.- ._. _.EOP
CURB RAMPS -SLOPE SHALL NOT EXCEED 8.3%FOR A MAXIMUM OF SIX 6 FEET: EC 660.22 .-_ _-_.-.._ - - -----'- - DECEL LANE '•. EDP
_.__.._- _._.-_.._.._..._....___.-..-_ --.._......_....,.-_ __.__..._,_. _-.._____ _.__. NGS-KENDRICK EAST BOUND LANE
LANDINGSSHALL PROVIDE BE PROVIDED AT EACH END OF RAMPS, SHALL PROVIDE POSITIVE - --- - - ----- _ : ._._ _ __._ ._ N:476350.09 .-._._ .__ _-_. ...__ .__ -____ -__. ._._. _._. .- .--- ..- __.-- _-.. --. U,
DLANE . w ___
EAST BOON .- M C- __ H . - 7A rE `� N D E P-ENI -MENC E EA EAST BOUND LANE In
, _ _.....- -..... ____. .__ -__ __ �._ ..__ __ __...._ ._.. _.___....._ ---- --_ __ _...� ___ .._.._- � „�M/ ` 8�V�,.._.._. _.�____:,_. _..._..---- _.:. __ .._._.__w_ _ _,___..._._..._ _.__-..___-, _._._._.._. EAST BD __w.___.___ ,..-__-�F �
DRAINAGE, AND SHALL NOT EXCEED 2.RO SLOPE IN ANY DIRECTION. --- ---- - -- EAST BOUND LANE . _ _. ,- ...___..._-. ___.,_...__....__._.__._-._. .�. NAD83 (2011) EOP
PATH OF TRAVEL ALONG ACCESSIBLE ROUTE -SHALL PROVIDE A 361NCH OR GREATER -_ _:. _ .. ,_._.-.._._...-.____ _ _ EDP
_ .. ._._ _. _,. ._ - Eor'_ ✓ EOP 200 PUBLIC RIGHT OF WAY )
UNOBSTRUCTED WIDTH OF TRAVEL, (CAR OVERHANGS CANNOT REDUCE THIS MINIMUM
3 I' ; z
WIDTH), THE SLOPE SHALL BE NO GREATER THAN 5.0% IN THE DIRECTION OF TRAVEL, AND - - �
SHALL NOT EXCEED 2 0% IN CROSS SLOPE. j -
SHALLN TEXCE EXCEED
LEVEL"LANDING AREA ON THE IXTERIORSIDE OFTHE DOOR LS' w- w----w----w----w----w----w----w----w----w----w----w--- •.
w----w----W----W----W----w---- 16 w °
RO_ORW
HAVE A
W----W----w----w----W----W----w--- W----w----w--- W--- w----w----W----w--- w- w--ww----w---- L DENRDE ca ti
THAT IS SLOPED NO MORE THAN 2.0% FOR POSITIVE DRAINAGE. THIS LANDING AREA SHALL �. m 'y00rasd PUaII R
BE NO LESS THAN 60 INCHES (5 FEET) LONG, EXCEPT WHERE OTHERWISE PERMITTED BY ADA - tnl _ 1+.0•e _ _ _ _ _ _ _ - - e I! Reg p
- - - - EXISTING PUBLIC RAN 0 "o" STANDARDS FOR ALTERNATNEDOORWAY OPENING CONDtTK)NS(SEE ICC/ANSIA1t7.t-2003 - - TINGPUBLICWW Q� /CB �'� C�O'',,
AND OTHER REFERENCES INCORPORATED BY CODE). - - ` O•�.��01e's sNaH1•L f.
CONTRACTOR SO WARP EXISTING ASPHALT AS NECESSARY TO ENSURE SLOPES ARE ADA -
ACCESSIBLE. CONTRACTOR SHALL ENSURE NO PONDING OCCURS DUE TO PAVEMENT f`.IE�O�o Cd a°L,D-.I yc la,� r..,,,Q Dtym@pypg _ = E °
MODIFICATIONS. - - Construe° an ,R R or, w eso d:,cumarrts B = 428
required by I s n aevm-i u_ r , %ilh Cam llna-
rule" requira hat i ,c, designer
- ln3p., l3v ing cor ,U sNt, r_ iTy conmr,dfywith Ole. fhcINEE�:,•
. plans and specs n ' „r � r r cr rn,'igi1o& with the
stormwator rules (15A NCAC 2H .1^08 (})) '.�
GRAPHIC SCALE Permit# StaZ3(lnOtooI DateG.i0.2jQ1& 03-17-16
byA4• TZ1A. N'J r,ti LL_ i
0 50' 100, - - Sheet Revision Date 3 17• ZOib
I
( IN FEET
inch =
50
)
ft
C®2.0
14

Keflcr Via Proposed Storm Water Prue Schedule 1%
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DI-513
DI -SA 186
0,49 0.90
7.03 ' 5.0
3,10
3.10
15 RCP
OD13 0.0050: 4,57 08%
3,72
PASS 687.85 684.35 083.42 '
D4-5A
MR-6, 88
0.26 0.90
703 5.0
1 §
4.75 :
1S RCP
D.013 00118 7.02 : 68%
'S32
PASS 688DO 683.32 68228
DI-11
MH-5 38
0.30 0.90
7.03 5.0
1.90
1:90
15 RCP
0.013 0.0050 4.57 42%
3.72
PASS 685.65 682.37 682.18
M I-5
MH-4 90
0.00 0.90
7.03 5.0
0.00
5.64
30 RCP
0.013 0.0050 29.00 23%
5.92
PASS 686.50 682A8 68173
DI-12
MH-4 18
0.26 0.90
7.03 5.0
1.65
1.65
15 RCP
0.013 0.0267 10.55 16%
8.59
PASS 689.15 682.21 681.73
M L4
M I-3A 82
0.00 0.90
7.03 5.0
0.00
829
30 RCP
0.013 0.0050 29.00 29%
5.92
PASS 689,50 681.73 681.32
ROOF
Mi-3A
0.14 0.90
7.03 5.0
0.89
0.89
8 HDPE
MH-3A
W-3 90
0.00 0.90
7.03 5.0
0.00
9.17
30 RCP
0.013 0.0050 29.00 32%
5.92
PASS 69OA5 681.32 680.87
DI-13
M1-1-3 18
0.06 0.90
7.03 5.0
0.38
0.38
15 RCP
0.013 0.1217 22.53 2%
18.34
PASS 691.50 683.06 680.87
Mi-3
CB-2 148
0.00 0.90
703 5.0
0.00
9.55
30 RCP
0-013 0.0050 29.00 33%
5.92
PASS 691.30 680.87 680.13
CB-16
DI-15 18
0.30
0.90
7.03 5.0
1.90
1.90
15 RCP
0.013
0.0100
6.46
29%
5.26
PASS 690.85 684.00
683.82
ROOF
DI-15
0.12
0.90
7.03 5.0
0.76
0.76
8 HDPE
DI-15
CB-14 118
0.17
0.90
7.03 5.0
1.08
3.73
15 RCP
0.013
0.0100
6.46
58%
5.26
PASS 690.75 683.82
682.64
CB-14
CB-2 154
0.16
0.90
7.03 5.0
1.01
4.75
15 RCP
0.013
0.0100
6.46
73%
526
PASS 690.50 682.64
681.10
CB-2
FES-1 25
0.83
0.90
703 5.0
5 25
19.55
36 RCP
0 013
0.0050
47.16
41 %
6 68
PASS 688.70 680.13
680.01
CB-8
CB 7
179
0.25
0.90
7,03
1 5"0
1 1.58
1 1.68
15 CAS
0,024
a 0050
2.46 '
64%
2 02
PASS 684.05 6W0 :
679; 2Q
CB-7
M-I-7A
22.5
0,19
0 90
7.03
5.0
120
2.78
15 CMP
0 024
00200
405
56% `
4.03 '
PASS 684-25 679.1
678.65
MH-7A
UG STOR
1 3
0,00
0.90
1 7.03
50
0.00
2,70 1
15 CAS `
0.024 :
0.0333
6.39
44%
5.20-
PASS 685 QQ f>7&55
678:45
CB-10
UGSTOR
19
1 0.43
1 0.90
1 TZ
1 5.0
212
1 2:72
15
1 CMP
1 0.024
1 00200
1 4r95
1 56%'
403!
PASS
683.51)-
679.85
679.47
Keffer Kia - Proposed Roof Leader
/
r
6
-% 67
9
9
6132
/
/
690.89
/
i 690.88x x STORM��'ATER s�
_�690.7s MANAGEMENT BASIN ���•
6
/� • ' �a .sag SEE SVEET G4.., \
/ 69075
692.12 `<' k690.60 '
69150
/ i .1691 50 , • , , .Gp 6
, ' % �- " • - 692-58
M is 692.49 ,
692 6928y:e
y _ 4 692.29
/yam 'K 691 83 690
,y / / % • cow x 9 "� / 691.79 x_
692 81
93.19 , 691.47
.01
:r `��• '/��� 69� MH3A
Aiiii
i• 1
0
FES-1
rH3]
.49 /
/
s
i `91
/ 1 691.46
690.78 x
' 692.46 \
690.81
688.45-DI-12•. :1 ,'692.34 " / 4•a •'� \ a_ 690.48�
o .689.70 x:;:. i
/ 678.45 4.7 ,
�� '� ✓/ ro ra0 .� ' " �� , ...� / 691.62 x ; z.' 690.
6691.62
A /,,, / 1� • 689.50` i MHO A °j 4.2 �- _ 690.53
\ PROPOSED CONTOURS FROM /67698/ 6,' 679.81
\ DIRECT AUTO PLANS (TYP.) y ` nc \ .` F•<
/ 690.80 x
67893
691.00
PROPO68998 692.50 6w 261460 sQ�
6 002 ac es
.t 18" CMP ®0.5�� 7 / /// 00^682.82 rn ��691.081'
�o�' ry .6 -9q,-'Koaz\
v o w l ` �o ' "FFE=692. 0 ss100 6
, ' mN 4.4 :, 692.00 9x 691.25 H P
\ �/685.43' , q1 m 0 O4.5 ! 692.001,
PROP. If�.."C,7�3.42 / /685.34� ,� •� 686Y.52 69095 -
_,: �\ ` '/1,' R6yy. %✓ ��g ,, 68527• sBs r� 8620' 'M1H 3+ 688.19691.37 692.50
\ \ • % ro^ 685.19 , 685.18 , '� 687.91 < 692.30 D7- 692.15 / _
\ 7 6
��� "r'�✓ ^, `.. 85.30 68722 ` _ ,� ��` C&i6 �� 69 .84' / / -go
1
687.19 `.. 689.11 o 691.93
18" RCP AS SHOWN ON/ Asa / „ 7 685.43x a 90.30
DIRECT AUTO SALES GRADING d, a� ys84 a5 685.05 �6�6� , °' . " ' 4�� 5.4 /
686 34 m r' 692.2 152
692.30
PLAN (INVERT 670.19) • / 6 m o 610,65 / ♦ ,
E 8 _ 684.56 685.99 Xi 86.60' �
.. 1, 6>4 684.40 4,, 686.506 �'' • _/ 691.9 S.6 30'r j691.80
692.31 15.7 691,80 x
8 68916 C. 692.30 692. 5.3 .X691, 62
REMOVE EXISTING FLARED END - - _ •t3,,F'`6 r s tD 685.07'NZ7 ,
sr -� 6' M8 86 68a.58 EOP ' x 692.11
SECTION, SAW CUT ANGLE �� 684.98• rn /
( 6 S ^1683.77 rp P1-5A x69151',,',692.31 / 691.20 690.63 692.26-
APPDX. 50- DELTA - TO BE =' m 683 72Xt;• r692.30
- _CB - 688.09 • 8
FIELD FIT) FOR EXISTING PIPE • • . , ., 6) 10' - 685.12 - 685A1 • o, /. ,/// x691.� 6
& PROPOSED PIPE, & WRAP \ wBjR, sr 60 683.50 ,1 , 688.26 ,x 688.20 EOP 69 '/ �� �G692.18 ' 692.04 / ! / x692.38
PIPES WITH MAR MAC WRAP�'688.22 O
OR EQUAL: - : .� x691.51� y 891.94 '� 691.89 HP 69125 ,
686.81 X ,.,. �" 691.26 - T 691.94 691.51 '
- 6'�A X'68663 B� 691.26ld,
PROPOSED 7.5' OF 18" RCP % \� : ; \ ski ,2 s�J + '
(INCLUDING RELOCATED FLARED Gj 6' 69L13 m /
END SECTION) i \ \ S\ ' • ' , ,` \ \85.02 MH-7A s� 6a9-81 X690.91 _ ro • , 690
.� INV. 671.0 d X689.81 / 6 '6 /
/688.56� 689.03 EOP '6 - �24
684.37) I 685.16 N 6+ 96 , • 692.42
E i- \. , ; I ; • • 684.25 , ,' , , s92.64
\ �� CB�7 �A - 688.69�688.62EOP
ro '' d' X688.66 'Bg0' 690.61.x692.18/
i �: ��S 690.59 x , "
690.38 /
\6 3, 687.24 68g % 689.95
4V �5,x: �ai A od'R �� 687 14 689.33 0 / 6�B
689 53 0��.
PROPOSED UNDERGROUND S, s s 9
1 �\ DETENTION/WATER QUALITY SYSTEM ` - G • ' 6 \; ; • ' o I'll 1168� � _ D136 %
685.59
\ (SEE CONTECH SHEETS FOR DETAILS)\ . • , a, s - : • ` \ seJ ,, `4685.48 68817 688.58 687.84 i"'x 689.75
\ _ �.'°`r' , .� 688-50
- ?, 689 57 x IZ
' , A,':�' d T684.85 e6 :� 688.15 0 6`
68653
y� d
686.23
\ \ \ ' • , @ 686.14686.51 6)
,68�685 21
684.0
685.54
685.28
s
't ,, :: ::�: Fa 'r• +a . dy:a:yw; ra ia4 i1:t :§)-4':" .I� r . Fs i .: a \ 6.
NO!
:' . .. � i.. ..
• n,:. - ._ ::. „. _.==,:v,.. - _ ._:n:,-:.ss ... ., . _. _ . ::: �� : .. ..:r .
.. .,.t. - .,, ._ _.: � +:; 011
, ».. �x , Ed,: {C .,,�gt�
-.. -.. _. ., a. I.
.._.... .... 'i:.....:...a„ '4[�
...._..r:-.._,: ... a � ' . 'F a. � r I.�-
,...._.._..._ , .L.._._, _ ..sty"
...,.. _ .n § . .. r:. s ' »w`:
.. -v ...n -c, M... ik.
_.. ,. wit ' ._ : = k , ,i t:fx+s.,.,_ :... .....�, . m;
. v. 7$ , a 4 ..... .. zi & .:6... r i. ._L.-,:. .R ..3 ..i s. jai
'! ,L,y! .. Y ..v_. .. i _ .. r.... ... --, x :.:x . a.. ,x3e.,u. ... ..r:£:ev:ir. " `(v ,t} r� !.fir..-,
._.r_ ... s _....:-r. .... __a. :.. :. .....: ..._ .. ..a, a,n r ._ u �+'.
:01.
,� f_ �' .._ u ., . , _E! r S'F,. _r= ... ... x ., , :. ,. .. ... � �.. ' �t..:£:: : � .. •
15w rs....n'. .:a. `ti e . . _. ...... ,C•v.... .... r.0 r r . ' itr ...: "i#C',_ tY...._.._3'
_ .-.. .:. ..c..$.... ! c'__. , ..... _ F
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fu _.... .., rr, ...„.. .d£":.- .. rz ., . r i i r: a r . " _- P ,•�'
_ .. ... a -Fs .: _. . _..•. 'I v 'ie.._......_... .v?c.'.. .. ._.�u.: ... � . _ mx r . �,. J• .' '� i :
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v .v'� x_.
. s,un..�':�'.. •x .. ..uv ._r.;.' :_n:. .. x 3. _ u-.v�.. .. ...... '4 � . .., .. .. . _.... _ ....: _ _ _ .. ...... _�. _...!,F �.. t b d a w'E2&
....__...
,.._. !ar _•_ __ _,
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.. .. .r ... _.. ,:. 4. _ , :a _ ._ da ... a.:i " :nrCu. ........ �,� •\,
._. .,_ .. a4:m .h: r .. . fi. ..._.. , o v. ....r. n_ :,_ . _ _. < -.. i.. .._ tom_... ... _,. a. '3d..r_,...
e., . _ ._ . L. ' __. _.:h:x. ...,^55.,''"i r}... _ :: L,!,;.;,r vt ._... _ ... .' c-.._,.. _ ...r..... ... :. .. .. h.... .... u_ v `Y
.. .Il.. ...__ ... n .a. _ ... .... .,. . _._. h x4.. __v ,...._. .. .,. ....aL.r_ n .. -
_at s ,v. ,arn-
::: �_. r ...... .. ,- :..m. ." :r.. . 'sd, :. _. .. ,.>.._ .... ._ rL,... ra......6..
ERA
_. r .. , „- < ,. c.x,..e .f:f5:m..a,m.. ,
a`..r._ ..r r €' .r....,, .... . , ....... .F
,x
_•::r _ a[� :. c ..�,• :..i ........ .."'1.r.._ ._="' .t._. _.r .�."...
... ..- _-.a�a... .. :... .E..Sev:_... _ _ _. _r'
_v :c:a .. _ , .a. .. ._...._ ., adry rk ' a... n__�n .t
.c- . r1, ... _ras...... .._�_ p9 ..h, r ' .' �..-:
da.. ..... _ _...� . s ..
H? ...... .. .:... .. .:� .. u, '•u:. - -
n-,..
-
_.
AMU
r, - .. ._. -S!.. .. _..t'4. a. i...
.. zar . _. __ s ..:.. -, rs, .,ve :•� .n .......... . .: rt .._ :x . := v ..._ _ . ' '. _ .'v..' .. < .::' :Su*6 _u... . �4 s 4 :r�kk2E3i .....:i0r+_ r .. . .. ,.... ay. 'ti v,` x .. _ , _..... ._ 3._ , a.l.. 4.:. ,µaS,
I r i ._r_.._ arc::: .e s-...4 §xi':: ,
.a _..._ v ._u. . _ x a .. r _ d....
P: _ ...._..... _ ...a. E� d .:} _ m c:., i _. _ ...... _a;v._... .v_.. y..._ .. :: s.:v....:::ra. e!i ... e....i.
.. _.v ..._. i .. ....u.. , .. L.... , d: ....... ......... _.. .,n...: .....®.0 ..._: ,:v..v.. .. \
-. _... §:., _. .... .. i 3 ._.d_d .. ?'i-v Y_. ..a..h. r : _a :v: .�. v�... iF-_ .r. - " .. 1`i i _...._.a.,..._..a.. _..i:. to :."... ,vu .".. _.3_i:: a ..fe.u.. .__.d._.. .i...... r._.v.k
S ._ ..... ..c_ r .. ... , ........._..a.... v.r. ...._ .. __ ,. it : .d__........T1,r -
.1��...:lE .•�.r3.rt?. s:ri' . .?.... .. r .. ru . J ,mi r E �: - � c- w try
I
INSET A
SCALE=1:20
m - Mannmes Eauation
4 !� 5.
NINi" �+
k
a wr3s ,P' S 4 i
:- _,::..: ... ...�-.: ....._ _.... _. _.. :. .. ;••_... m .N:.,........ _..:_. r:_....
- - R-
. t:...
41 MH-3A 41.00 0.00 OA4
2
k { : s3
,i... �i'
:3 Sr'
r-:-+r-.. _i:: c �.._.:,. ac.. ;�:
r,. .-'.i._... "_ r.aa �...
.: s..:.... ,:_ =u . _ .., .:Z. __e, v _ ::_ _.. ....,:_.
0.90 0.00 000 7.03
'-
.:'
1.00
0.89
? 'i' :I 4 A
•a."' "+ ,
...L
:.
.,:.daS...F... _ !i.. ._
8 RCP 0.013
'c �
r .;':.
t• e W
.. 3v..3_ . ._w.... .. _ _
0.0200 1.7
'Ma a+. lI T
..il...__....
L ..s:;;:. ;..:-r:al' a -'r _
...
. ar r, 3 ._ _ . 4""_' YfYv°
52% 4.88 PASS 691.25
:.a:. E'NONE'Y_
4Y!iti n!
687.17
s
686.35
42
4.1
48.50
0.00
014
0.90
000
0"00
703
L00
0.89
8
RCP
0.013
0.0200
1.7
52%
4.02
PASS
69225
688.14
687A7
4.3
42
30.00
0.00
0-06
0.90
0.00
0.00
703
1.00
0,38
6
RCP
0.013
0.0200
0.8
48%
4.02
PASS
692.25
688.74
688.14
4.4
4.3
17.50
0.00
0.05
0.90
000
0-00
7.03
1_ O
0.32
6
RCP
0,013
0"0200
0.8
40%
4.02
PASS
69225
689.09
688.74
4.5
4.4
8.00
0.05
0 05
1 0.90
0.05
005
7.03
1.00
0.32
6
RCP
0.013
00200
0.8
40%
4.02
PASS
692.25
689.25
689.09
4.8
4.3
1 4.00
1 0.01
0.01
0.90
6.01
0.01
7.03
1_00
0.06
6
1 RCP
0.013
0.0200
OB
8%
4.02
PASS
69225
68&82
1 688:74
4.7
4.2
36.60
0.00
008
0.90
0.00
10 00 7.03
1.00
1 0.51
1 8 1 RCP 1 0.013
1 0.0200 1 0.8
1 64% 1 4.02
1 PASS 692.25
1 687.89
1 87.17
4B
4.7
13.00
0.08
0[08
090
0.07
10 07 7 03
1 00
1 0,51
1 6 1 RCP 1 0.013
1 0.0200 1 0.8
1 64% 1 4.02
PASS 69225
1 689.25
587.89
15.1
MH-15
67.00 1
0.00
0.12
0.90
1 0.00
0.00
1 7.03
1.00
1 0.76
8 1 RCP 0.013
1 0.0150 1.5
1 51% 4.23
1 PASS 691.75
1 687.06
686.05
15.2
15.1
31.00
0.00
0.10
0.90
0.00
0.00
7.03
1.00
T 0.63
8 RCP 0.013
0.0150 1.5
43% 4.23
PASS 692.25
687.52
687.06
15.3
15.2
21.00
0.00
0.10
0.90
0.00
0.00
7.03
1.00
0.63
8 RCP 0.013
0.0150 1.5
43% 4.23
PASS 692.25
687.84
687.52
15.4
15.3
25.50
0.00
010
0.90
0.00
0 00
7.03
1-00
0.63
8 RCP 0.013
0.0150 1.5
43% 3.49
PASS 69225
688.22
687.84
15.5
15.4
25,50
0.00
410
0.90
0.00
400 :..
7.03
1.00
0.63
6 PCP 0013
0.0200 0.8
80% 4.02
PASS 692.25
688.73
688.22
15.6
15.5
14.00
0.00
0.10
0.90
0,00
0.00
7.03
1.00
0.63
6 RCP 0.013
0.0200 0,8
80% 4.02
PASS 692.25
689.01
688.73
15.7
15.6
12.00
0.10
OAO
0.90
0.09
0.09
7.03
1,00
0.63
6 RCP 0.013
0.0200 0.8
80% 1 4.02
PASS 692.25
689.25
689.01
15-8 1 15.1 3100 0.02 1002 0.90 1 0.02 1 0.02 1 7.03 1 L00 1 0.13 1 6 1 RCP 1 0.013 1 0.0200 1 0.8 1 16% 1 4.02 1 PASS 1 692.25 1 689.25 1 689.25
690.07 / - -
690.01/
�I
\ J
NOTES:
1. ALL SPOT ELEVATIONS ARE AT BACK OF CURB UNLESS O-HERWISE NOTED AND DO
NOT REFLECT PEDESTRIAN RAMP INSTALLATION.
2. TRUNCATED DOME MATS ARE REQUIRED AT ALL RAMPS.
3. ALL STORM DRAIN PIPES TO BE CERTIFIED BY THE ENGINEER PRIOR TO OBTAINING
FINAL STORM WATER APPROVAL FROM UNION COUNTY.
4. ANY OFF -SITE BORROW AND WASTE REQUIRED FOR THIS PROJECT MUST COME FROM',
AN APPROVED EROSION CONTROL PLAN SITE, A SITE REGULATED UNDER THE
MINING ACT OF 1971, OR A LANDFILL REGULATED BY THE DIVISION OF SOLID WASTE
MANAGEMENT.
5. TRASH/DEBRIS FROM DEMOLITION ACTIVITIES MUST BE DISPOSED OF AT A FACILITY
REGULATED BY THE DIVISION OF SOLID WASTE MANAGEMENT.
1,9
t r a0 �pp/ -(9, -0, •
EGEND r �s
� r
P
� s
------ - O l l
ME MATCH EXISTING oar o,
0 HP - HIGH POINT ull/r
TP - TOP OF PAVEMENT
FG - FINISH GRADE
TC - TOP OF CURB
ApoeelroBTC<�n P ��PIQgF aCB &
Construction m arro' J. ,c 4J4]i?'•;e9af c �MENT
required by [he s;oi m v t�r u : M1, North Carolina
rules require *.at !; e s1'}, n w._' ,r system designer
Inspoot dmng car.=truest in re'tify contorrity Wiat #0
plans and sPec-; and certify compliers With the
stormwater rule; (15A NCF,C 2H .1008 (j) )
Permit # S1a13 tap 01 Date (c . Z.o • 20 t L
by_JA 1�+►. N.Ah ll
Street# 4.o Revision Date Co. 2. 2otee
GRAPHIC SCALE
0 40' 80'
( IN FEET )
1 inch = 40 ft.
0
0
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15798 : r _
",,,irlllliNfef /# modo
0 - 4 • 0

1/2" GALVANIZED
BOLT (TYP)
4" CONCRETE SLAB
OPEN ON TOP WITH TRASH GRATE -
ELEV.=684.00
(1) 24" WEIR
IN WALL
ELEV.=683.40
-----------
(1) 9" ORIFICE
ELEV.=681.50
STEPS FOR ACCESS
AND MAINTENANCE
(TYP) -
(1) 4" ORIFICE OPENING
INV.=678.00
CONCRETE FOOTING AS I SIDE ELEVATION
NECESSARY TO STABILIZE
1/2" STEEL PLATE
TRASH RACK #4
REBAR @ 3" O.C.
ORIFICE TRASH GRATE
FOREBAY RIP RAP BERM
ELEV= 681.25
3' MIN. TOP WIDTH
PROPOSED SAND FILTER
DEPTH= 18"
AREA = 1,300 SQ. FT.
SURFACE ELEV. = 680.00
CAPPED CLEANOUT PIPE (TYP.)
MIN. 8" ABOVE TOP OF SAND W/
REMOVABLE CAP
100 YR WSE=683 76
_-- 25 YR WSE=683_22__�---
WATER QUALITY
ELEVATION DRY DETENTION POND ABOVE
681.25 SAND FILTER ELEVATION= 681.25 — — — —� YR WSE=681_89 _ _ _ _ _ _
._.._.._.. _.. _...._ _.._.. _.. _.. _.. _.._.. ...... ...... _.. _. _.. ...... _........ ......
_.. J
BMP RISER STRUCTURE
(SEE DETAIL - THIS SHEET)
EARTH BERM
EL. 685.00
i ���/\ 11,y3.y� Y/r' \1 \',, \f!��; �\� 12, LONG x 14' WIDE APRON
___�l�rra'�Y;,1'�''✓1\\i 9 DEEP RIPRAP
—___--________________
- - - ----_-----
PROPOSED UNDERDRAINS SHALL BE 4" - SCH. 40 OR SDR-35�' �/ '' \\rtt�\tir�Y.- t, \� it� �1r t���.- r \� y t /. �,t/\tr/ty �\ '� t�}. ��\�• ``mil ` '- Y /tom' �{�/ r, l /�l i.
SMOOTH WALLED PVC AND HAVE A MINIMUM SLOPE OF 0.5%.'__J/ i \�%�CS/✓Yit \ t\/ \�t\ ,"Yn'\Y✓ l _\\,% ,/, a\ . ...ti-,\�1"�` \/'l..cl rrl i�,�. \\��% V \i.�Y\� �',�l\� ✓�\\rY� i'�Y.-i\-�1\. \ ,'
UNDERDRAIN PIPES SHALL HAVE A MINIMUM OF 4 ROWS OF 3/8"9 PROPOSED WASHED #57 STONE (MINIMUM 3" ON \ \ r« \., '
PERFORATIONS 6 INCHES ON CENTER FOR EACH ROW (SEE PLAN TOP AND ALL SIDES OF UNDERDRAIN PIPES)
VIEW FOR PROPOSED UNDERDRAIN LOCATIONS) _
SAND FILTER / DETENTION POND SECTION TO PREVENTNC OGG NG OF IPERFORATIONS IC I.E.:677.50 PROP. 50 L.F. OF I.E.: 677.00
NOT TO SCALE I.E.:678.00 24 IN. RCP @ 1.0%
4" CONCRETE SLAB WITH
METAL GRATE/TRASH RACK
W/ 4" OPENINGS
'RUST RESISTANT MATERIAL).
TRASH RACK SHALL BE HINGED
=OR EASY MAINTENANCE ACCESS
4" CONCRETE SLAB WITH
FLUSH TRASH GRATE
TOP VIEW
(1) 24" WEIR IN WALL ELEV.=683.40
9" ORIFICE - ELEV. = 681.50
r W 1/2" STEEL RACK (TYP.)
DROP INLET TYPE
BOX STRUCTURE
(4' X4' INSIDE DIMENSION)
REAR OUTLET PIPE
4" ORIFICE OPENING
INV =677.50 (TEMP. CONNECTION FOR SKIMMER)
PROP. 4" SAND FILTER DRAIN CONNECTION
FRONT ELEVATION (CONVERTED AFTER EROSION CONTROL)
DETENTION BASIN OUTLET STRUCTURE
NOT TO SCALE
Table 17-1
Sample Inspection and Maintenance Provisions for Dry Detention Basins
BMP element-
Potentialproblem:
How to remediate theproblem:
The entire BMP
Trash/debris is present.
Remove the trash/debris.
The perimeter of the dry
Areas of bare soil and/or
Regrade the soil if necessary to
extended detention
erosive gullies have formed.
remove the gully, and then plant
basin
ground cover and water until it is
established. Provide lime and a
one-time fertilizer application.
The inlet device: pipe car
The pipe is clogged (if
Unclog the pipe. Dispose of the
Swale
applicable).
sediment off -site.
The pipe is cracked or
Replace the pipe.
otherwise damaged (if
applicable).
Erosion is occurring in the
Regrade the swale if necessary to
Swale (if applicable).
smooth it over and provide erosion
control devices such as reinforced
turf matting or riprap to avoid
future problems with erosion.
The forebay
Sediment has accumulated
Search for the source of the
and reduced the depth to 75%
sediment and remedy the problem if
of the original design depth
possible. Remove the sediment and
(see diagram below).
dispose of it in a location where it
will not cause impacts to streams or
the BMP.
Erosion has occurred or
Provide additional erosion
riprap is displaced.
protection such as reinforced turf
matting or riprap if needed to
prevent future erosion problems.
Weeds are present.
Remove the weeds, preferably by
hand. If pesticides are used, wipe
them on the plants rather than
spraying.
Table 17-1, continued
Sample Inspection and Maintenance Provisions for Dry Detention Basins
BMP element:
Potentialproblem;
How to remediate the roblem:
The main treatment area
Sediment has accumulated
Search for the source of the
and reduced the depth to 75%
sediment and remedy the problem if
of the original design depth
possible. Remove the sediment and
(see diagram below).
dispose of it in a location where it
will not cause impacts to streams or
the BMP. Revegetate disturbed
areas immediately with sod
(preferred) or seed protected with
securely staked erosion mat.
Water is standing more than
Check outlet structure for clogging.
5 days after a storm event
If it is a design issue, consult an
appropriate rofessional.
Weeds and noxious plants are
Remove the plants by hand or by
growing in the main
wiping them with pesticide (do not
treatment area.
spray).
I'he embarkment
Shrubs or frees have started
Remove shrubs or frees
to grow on the embankment
immediate).
Grass cover is unhealthy or
Restore the health of the grass cover
eroding.
- consult a professional if necessary.
Signs of seepage on the
Consult a professional.
downstream face.
Evidence of muskrat or
Use traps to remove muskrats and
beaver activity is present
consult a. professional to remove
beavers.
An annual inspection by an
Make all needed repairs.
appropriate professional
shows that the embankment
needs repair.
The outlet device
Clogging has occurred.
Clean out the outlet device. Dispose
of the sediment off -site.
The outlet device is damaged
j Repair or replace the outlet device.
The receiving water
Erosion or other signs of
Contact the NC Division of Water
damage haveoccurred at the
Quality 401 Oversight Unit at 919-
outlet.
733-1786.
I
EX
D
A
PROPOSE
CLASS B
SAND FILTER / DETENTION POND PLAN
STORMWATER RUNOFF SEQUENCE: 3. STORMWATER WILL THEN FILTER THROUGH THE SAND MEDIA AND SUBSEQUENTLY
1. STORMWATER SHALL FIRST RUNOFF INTO THE SEDIMENTATION CHAMBER TO PROTECT DISCHARGE THROUGH THE PROPOSED UNDERDRAINS.
SAND FILTER FROM CLOGGING DUE TO SEDIMENTATION & TO REDUCE THE ENERGY OF 4. WHEN STORMWATER POND STAGES UP TO AN ELEVATION OF 681.25 IT WILL BE
THE INFLUENT FLOW RELEASED VIA THE BMP RISER STRUCTURE.
2. STORMWATER SHALL THEN SEEP THROUGH THE RIP RAP BERM AND DRAIN INTO THE 5. DETENTION IS PROVIDED FOR THE 2 YR. & 10 YR. - 24 HOUR STORM EVENTS AND THE
SAND FILTER AREA. POND SAFELY PASSES THE 50 YR. - 24 HOUR STORM EVENT.
3, io
I
outlet I � $ DOW p . p, . L,
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