SW3230303_Plansheet - Existing Drainage Area_20230803

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LEGEND AND SYMBOLS '�!'`_� - ° ° °
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Storm Drain Inlets - ` _ �A-'� ° ° o � -� r _
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Drainage Basins "�..
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Proposed BUA • ° r
Existing Storm Drain "- - - ..+ --,:_w
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CLIENT: Union County Prepared b
p Y: Prepared for:
Existing Storm Drains and Drainage Areas PROJECT: Twelve Mile Creek WRF 9.0 MGD Expansion Hazen
LOCATION
0 55 110 220 330 440 550 MAP Twelve Mile Creek WRF Storm Drainage System 9101 Southern Pine Blvd. Suite 250 UNIONCOUNTY
Feet DATA:
Charlotte, NC 28273
Phone: [phone] WATER
1 inch = 175 feet DATE: May 2023 Prepared By:HS Reviewed By: HS Firm NC License # C-0381
H&S Proj. # 30831-061

DA: C3A }
A: 0.56 AC
C: 0.48
Z Tc: 5 min
DA: C 1 Q `
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A: 2.10 AC � • �{:.
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C: 0.33
Tc: 5 min
DA: C3 � DA: C3B
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A: 0.19 AC � A. 0.64 C 0.64
C
C.5 min
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o Tcc. 5 n � _ �/ ,. Tc: 5 min
It�
* Ik DA: C4B
AC
v C: 0.57 L�
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DA: C2 ,;. DA: C4C
A: 0.30 AC . I A: 0.18 AC
Tc: 5 m in �..� . ;; j ° Tc: 5 min
l� o ° ° „ DA: C4A O :
DA: C2A — A: 0.17 AC
° e C: 0.92
A: 0.35 AC ���.
C: 0.64 1 _o Tc: 5 min
Tc: 5 min +, - 0 I or
DA: C4
1
LEGEND AND SYMBOLS A: 0.08 AC _
ill C: 0.35
° Storm Drain Inlets DA: C5A Tc: 5 min
'/ A: 0.20 AC 010
Existing Storm Drain �— DA: C5 t C: 0.95
p � A: 0.19 AC Tc: 5 min
Storm Drainage Basins C. 0.91
g �.� Tc: 5 min
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12 Mile Topo .
, M E G h- G�IS
CLIENT: Union County Prepared b
p Y: Prepared for:
Existing Storm Drains and Drainage Areas PROJECT: Twelve Mile Creek WRF 9.0 MGD Expansion
LOCATION
0 25 50 100 150 200 250 MAP Pre Construction Storm Drainage Areas - System C 9101 Southern Pine Blvd. Suite 250 U N 1 ANC^U N TY
N Feet DATA: Charlotte, NC 28273 Phone: [phone] WATER
1 inch = 87 feet DATE: May 2023 Prepared By:HS Reviewed By: HS Firm NC License # C-0381
H&S Proj. # 30831-061

DA: K1 �•. O
A: 0.138 AC
O C: 0.88
Tc: 5 min
DA: J 1
A: 0.526 AC
C: 0.49
Tc: 5 min
-A!NL-
DA: J2
A: 0.123 AC
C: 0.95
i Tc: 5 min
LEGEND AND SYMBOLS
Storm Drain Inlets DAJ2A
A: 0.109 AC
Existing Storm Drain s Tc: 5 min t O
Storm Drainage Basins ,
12 Mile Topo
CLIENT: Union County Prepared b
p Y: Prepared for:
Existing Storm Drains and Drainage Areas PROJECT: Twelve Mile Creek WRF 9.0 MGD Expansion
LOCATION
0 12.5 25 50 75 100 125 MAP Pre Construction Storm Drainage Areas - Systems J & K 9101 Southern Pine Blvd. Suite 250 U w'I^w��^U A'T V
Charlotte, NC 28273 !Y V AY V N 1 i
N Feet DATA: Phone: [phone] WATER
1 inch = 44 feet DATE: March 2023 Prepared By:HS Reviewed By: HS Firm NC License # C-0381
H&S Proj. # 30831-061