NC0003719_Worksheets_20230628 (5)

DAK Americas
NC0003719
Qw (MGD) =
0.5000
1Q10S (cfs) =
636.38
7Q10S (cfs) =
791.00
7Q10W (cfs) =
791.00
30Q2 (cfs) =
791.00
Avg. Stream Flow,
4340.00
QA (cfs) —
Cape Fear
Receiving Stream:
River HUC
3030004
REASONABLE POTENTIAL ANALYSIS
2018 Generic RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
Qw (MGD) = 0.5000
WWTP/WTP Class:
Grade II
1Q10S (cfs) = NO 1Q10s DATA
IWC% @ 1Q10S =
0.12163445
7Q10S (cfs) = NO 7Q10s DATA
IWC% @ 7Q10S =
0.09788134
7Q10W (cfs) = NO 7Q10w DATA
IW%C @ 7Q10W =
0.09788134
30Q2 (cfs) = NO 30Q2 DATA
IWC% @ 30Q2 =
0.09788134
Avg. Stream Flow, 4676.00
IWC% @ QA —
0.01785395
QA (cfs)
Cape Fear
Receiving Stream: River HUC
3030004
Stream Class: C
Outfall 001
Qw=0.5MGD
WWTP/WTP Class: Grade II
IWC% @ 1Q10S =
N/A
IWC% @ 7Q10S =
N/A
IW%C @ 7Q10W =
N/A
IWC% @ 30Q2 =
N/A
IWC% @ QA = 0.016571248
Stream Class: WS-IV
PARAMETER
NC STANDARDS OR EPA CRITERIA
F
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
Ci
Chronic Applied Standard Acute
n # Det. Max Pred Cw Allowable Cw
Acute: NO WQS
1,4-Dioxane
C
80 HH(Qavg)
1
µg/L
54 54
15759.0
Chronic:448,080.00
Less stringent than protection of
No value > Allowable Cw
downstream water uses. Apply WS
Acute: NO WQS
1,4-Dioxane
C
0.35 WS(Qavg)
1
µg/L
54 54
15759.0
Chronic:2,112.09
RP shown - apply limit with Monthly
No value> Allowable Cw
Monitoring
3719 - RPA for downstream WS- 1-2023, rpa
Page 1 of 1 6/28/2023