City of Bismarck — NPDES permit MO0022942: limits, due date and EPA's record

NPDES permit MO0022942 · Minor POTW · effective, expires 2031-03-31 · EPA's file as of 2026-09-19

EPA's record, 2025-09-01 to 2026-08-31

Last period with anything received: 2026-06-30. Most often over: Nitrogen, ammonia total [as N] (1).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (40)

Outfall	Parameter	Statistic	Limit	Months
002	BOD, 5-day, 20 deg. C	WKLY AVG	<= 45 mg/L	all year
002	BOD, 5-day, 20 deg. C	MO AVG	<= 30 mg/L	all year
002	pH	MINIMUM	>= 6.5 SU	all year
002	pH	MAXIMUM	<= 9 SU	all year
002	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
002	Solids, total suspended	MO AVG	<= 30 mg/L	all year
002	Oil and grease [soxhlet extr.] tot.	DAILY MX	report only	all year
002	Oil and grease [soxhlet extr.] tot.	MO AVG	report only	all year
002	Nitrogen, total [as N]	DAILY MX	report only	all year
002	Nitrogen, total [as N]	MO AVG	report only	all year
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Oct, Nov, Dec
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Apr, May, Jun
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jul, Aug, Sep
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jan, Feb, Mar
002	Nitrogen, ammonia total [as N]	MO AVG	<= 2.9 mg/L	Oct, Nov, Dec
002	Nitrogen, ammonia total [as N]	MO AVG	<= 2 mg/L	Apr, May, Jun
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Jul, Aug, Sep
002	Nitrogen, ammonia total [as N]	MO AVG	<= 3.1 mg/L	Jan, Feb, Mar
002	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
002	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
002	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
002	Nitrite + Nitrate total [as N]	MO AVG	report only	all year
002	Phosphorus, total [as P]	DAILY MX	report only	all year
002	Phosphorus, total [as P]	MO AVG	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	E. coli	7 DA GEO	<= 1030 #/100mL	Apr, May, Jun, Jul, Aug, Sep, Oct
002	E. coli	30DA GM	<= 206 #/100mL	Apr, May, Jun, Jul, Aug, Sep, Oct
002	BOD, 5-day, percent removal	MO AV MN	>= 85 %	all year
002	Solids, suspended percent removal	MO AV MN	>= 85 %	all year
INF	BOD, 5-day, 20 deg. C	MO AVG	report only	all year
INF	Solids, total suspended	MO AVG	report only	all year
INF	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
INF	Nitrogen, ammonia total [as N]	MO AVG	report only	all year
INF	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
INF	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
INF	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
INF	Nitrite + Nitrate total [as N]	MO AVG	report only	all year
INF	Phosphorus, total [as P]	DAILY MX	report only	all year
INF	Phosphorus, total [as P]	MO AVG	report only	all year