Gregory H. Gunn — NPDES permit MO0125857: limits, due date and EPA's record

NPDES permit MO0125857 · Minor NON-POTW · administratively continued, expires 2023-06-30 · EPA's file as of 2026-09-19

This permit expired on 2023-06-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

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 (20)

Outfall	Parameter	Statistic	Limit	Months
001	Oxygen, dissolved [DO]	DAILY MN	report only	all year
001	Oxygen, dissolved [DO]	MO AV MN	report only	all year
001	BOD, 5-day, 20 deg. C	WKLY AVG	<= 15 mg/L	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 10 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	<= 20 mg/L	all year
001	Solids, total suspended	MO AVG	<= 15 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	<= 10.9 mg/L	Jan, Feb, Mar, Oct, Nov, Dec
001	Nitrogen, ammonia total [as N]	DAILY MX	<= 5.6 mg/L	Apr, May, Jun, Jul, Aug, Sep
001	Nitrogen, ammonia total [as N]	MO AVG	<= 2.7 mg/L	Jan, Feb, Mar, Oct, Nov, Dec
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.3 mg/L	Apr, May, Jun, Jul, Aug, Sep
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	Chlorine, total residual	DAILY MX	<= 17 ug/L	all year
001	Chlorine, total residual	MO AVG	<= 8 ug/L	all year
001	E. coli	DAILY MX	<= 126 #/100mL	all year
001	E. coli	30DA GM	report only	all year