NC0045993_Worksheets_20240308

Facility:
NC0045993
Prepared By:
Enter Design Flow (MGD):
Enter s7Q10 (cfs):
Enter w7Q10 (cfs):
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/l)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
Upstream Bkgd (ug/l)
IWC (%)
Allowable Conc. (ug/l)
Fecal Coliform
Monthly Average Limit:
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF)
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/l to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/l, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/l
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/l
4. BAT for Minor Domestics: 2 mg/l (summer) and 4 mg/l (winter)
5. BAT for Major Municipals: 1 mg/l (year-round)
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non-Muni)
NPDES Server/Current Versions/WLA; TB 1/16/2009
IWC Calculations
0.183
0.27
0.46
0.27
0.183
0.28365
17
0
51.2327282579247
33.1819143310418
200/100ml
1.95187731359069
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/l)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/l)
IWC (%)
Allowable Conc. (mg/l)
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/l)
w7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/l)
IWC (%)
Allowable Conc. (mg/l)
0.27
0.183
0.28365
1
0.22
51.2327282579247
1.74246430460074
0.46
0.183
0.28365
1.8
0.22
38.142943589054
4.36231270932487
limit if greater than 0.003 -->
1.05055555555556