City of Clarence — NPDES permit MO0041076: limits, due date and EPA's record

NPDES permit MO0041076 · Minor POTW · effective, expires 2028-11-30 · EPA's file as of 2026-09-19

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

Last period with anything received: 2026-08-31. Most often over: Nitrogen, ammonia total [as N] (2).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MO permits in EPA's filings — check your permit).

Limits in force (154)

Outfall	Parameter	Statistic	Limit	Months
001	BOD, 5-day, 20 deg. C	WKLY AVG	<= 65 mg/L	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 45 mg/L	all year
001	pH	MINIMUM	>= 6.5 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	Solids, total suspended	WKLY AVG	<= 110 mg/L	all year
001	Solids, total suspended	MO AVG	<= 70 mg/L	all year
001	Oil and grease [soxhlet extr.] tot.	DAILY MX	<= 15 mg/L	all year
001	Oil and grease [soxhlet extr.] tot.	MO AVG	<= 10 mg/L	all year
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Apr
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Oct
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	May
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Feb, Mar, Dec
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Aug
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jun
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jan, Nov
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Jul
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Sep
001	Nitrogen, ammonia total [as N]	MO AVG	<= 2.3 mg/L	Apr
001	Nitrogen, ammonia total [as N]	MO AVG	<= 2.6 mg/L	Oct
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.9 mg/L	May
001	Nitrogen, ammonia total [as N]	MO AVG	<= 2.7 mg/L	Feb, Mar, Dec
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.3 mg/L	Aug
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Jun
001	Nitrogen, ammonia total [as N]	MO AVG	<= 3.1 mg/L	Jan, Nov
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.1 mg/L	Jul
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.7 mg/L	Sep
001	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
001	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
001	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
001	Nitrite + Nitrate total [as N]	MO AVG	report only	all year
001	Phosphorus, total [as P]	DAILY MX	report only	all year
001	Phosphorus, total [as P]	MO AVG	report only	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
001	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
001	BOD, 5-day, percent removal	MO AV MN	>= 65 %	all year
001	Solids, suspended percent removal	MO AV MN	>= 65 %	all year
002	BOD, 5-day, 20 deg. C	WKLY AVG	<= 65 mg/L	all year
002	BOD, 5-day, 20 deg. C	MO AVG	<= 45 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	<= 110 mg/L	all year
002	Solids, total suspended	MO AVG	<= 70 mg/L	all year
002	Oil and grease [soxhlet extr.] tot.	DAILY MX	<= 15 mg/L	all year
002	Oil and grease [soxhlet extr.] tot.	MO AVG	<= 10 mg/L	all year
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	May
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Oct
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jun
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Feb, Mar, Dec
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jan, Nov
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Sep
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Apr
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Aug
002	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Jul
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.9 mg/L	May
002	Nitrogen, ammonia total [as N]	MO AVG	<= 2.6 mg/L	Oct
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Jun
002	Nitrogen, ammonia total [as N]	MO AVG	<= 2.7 mg/L	Feb, Mar, Dec
002	Nitrogen, ammonia total [as N]	MO AVG	<= 3.1 mg/L	Jan, Nov
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.7 mg/L	Sep
002	Nitrogen, ammonia total [as N]	MO AVG	<= 2.3 mg/L	Apr
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.3 mg/L	Aug
002	Nitrogen, ammonia total [as N]	MO AVG	<= 1.1 mg/L	Jul
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	BOD, 5-day, percent removal	MO AV MN	>= 65 %	all year
002	Solids, suspended percent removal	MO AV MN	>= 65 %	all year
003	BOD, 5-day, 20 deg. C	WKLY AVG	<= 65 mg/L	all year
003	BOD, 5-day, 20 deg. C	MO AVG	<= 45 mg/L	all year
003	pH	MINIMUM	>= 6.5 SU	all year
003	pH	MAXIMUM	<= 9 SU	all year
003	Solids, total suspended	WKLY AVG	<= 110 mg/L	all year
003	Solids, total suspended	MO AVG	<= 70 mg/L	all year
003	Oil and grease [soxhlet extr.] tot.	DAILY MX	<= 15 mg/L	all year
003	Oil and grease [soxhlet extr.] tot.	MO AVG	<= 10 mg/L	all year
003	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Aug
003	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Apr
003	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Sep
003	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Feb, Mar, Dec
003	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	May
003	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jan, Nov
003	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Oct
003	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jun
003	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Jul
003	Nitrogen, ammonia total [as N]	MO AVG	<= 1.3 mg/L	Aug
003	Nitrogen, ammonia total [as N]	MO AVG	<= 2.3 mg/L	Apr
003	Nitrogen, ammonia total [as N]	MO AVG	<= 1.7 mg/L	Sep
003	Nitrogen, ammonia total [as N]	MO AVG	<= 2.7 mg/L	Feb, Mar, Dec
003	Nitrogen, ammonia total [as N]	MO AVG	<= 1.9 mg/L	May
003	Nitrogen, ammonia total [as N]	MO AVG	<= 3.1 mg/L	Jan, Nov
003	Nitrogen, ammonia total [as N]	MO AVG	<= 2.6 mg/L	Oct
003	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Jun
003	Nitrogen, ammonia total [as N]	MO AVG	<= 1.1 mg/L	Jul
003	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
003	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
003	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
003	Nitrite + Nitrate total [as N]	MO AVG	report only	all year
003	Phosphorus, total [as P]	DAILY MX	report only	all year
003	Phosphorus, total [as P]	MO AVG	report only	all year
003	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
003	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
003	BOD, 5-day, percent removal	MO AV MN	>= 65 %	all year
003	Solids, suspended percent removal	MO AV MN	>= 65 %	all year
004	BOD, 5-day, 20 deg. C	WKLY AVG	<= 65 mg/L	all year
004	BOD, 5-day, 20 deg. C	MO AVG	<= 45 mg/L	all year
004	pH	MINIMUM	>= 6.5 SU	all year
004	pH	MAXIMUM	<= 9 SU	all year
004	Solids, total suspended	WKLY AVG	<= 110 mg/L	all year
004	Solids, total suspended	MO AVG	<= 70 mg/L	all year
004	Oil and grease [soxhlet extr.] tot.	DAILY MX	<= 15 mg/L	all year
004	Oil and grease [soxhlet extr.] tot.	MO AVG	<= 10 mg/L	all year
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Apr
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Aug
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Oct
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Feb, Mar, Dec
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Sep
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jun
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	Jan, Nov
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 12.1 mg/L	May
004	Nitrogen, ammonia total [as N]	DAILY MX	<= 10.1 mg/L	Jul
004	Nitrogen, ammonia total [as N]	MO AVG	<= 2.3 mg/L	Apr
004	Nitrogen, ammonia total [as N]	MO AVG	<= 1.3 mg/L	Aug
004	Nitrogen, ammonia total [as N]	MO AVG	<= 2.6 mg/L	Oct
004	Nitrogen, ammonia total [as N]	MO AVG	<= 2.7 mg/L	Feb, Mar, Dec
004	Nitrogen, ammonia total [as N]	MO AVG	<= 1.7 mg/L	Sep
004	Nitrogen, ammonia total [as N]	MO AVG	<= 1.5 mg/L	Jun
004	Nitrogen, ammonia total [as N]	MO AVG	<= 3.1 mg/L	Jan, Nov
004	Nitrogen, ammonia total [as N]	MO AVG	<= 1.9 mg/L	May
004	Nitrogen, ammonia total [as N]	MO AVG	<= 1.1 mg/L	Jul
004	Nitrogen, Kjeldahl, total [as N]	DAILY MX	report only	all year
004	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
004	Nitrite + Nitrate total [as N]	DAILY MX	report only	all year
004	Nitrite + Nitrate total [as N]	MO AVG	report only	all year
004	Phosphorus, total [as P]	DAILY MX	report only	all year
004	Phosphorus, total [as P]	MO AVG	report only	all year
004	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
004	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
004	BOD, 5-day, percent removal	MO AV MN	>= 65 %	all year
004	Solids, suspended percent removal	MO AV MN	>= 65 %	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