Northern Prairie Research Cntr — NPDES permit ND0025828: limits, due date and EPA's record

NPDES permit ND0025828 · Minor FEDERAL · effective, expires 2026-09-30 · EPA's file as of 2026-09-19

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 (24)

Outfall	Parameter	Statistic	Limit	Months
002	Temperature, water deg. centigrade	DAILY MN	report only	all year
002	Temperature, water deg. centigrade	MO AVG	report only	all year
002	Temperature, water deg. centigrade	DAILY MX	report only	all year
002	Stream flow, instantaneous	MO AVG	report only	all year
002	Stream flow, instantaneous	DAILY MX	report only	all year
002	BOD, 5-day, 20 deg. C	DAILY MN	report only	all year
002	BOD, 5-day, 20 deg. C	MO AVG	<= 25 mg/L	all year
002	BOD, 5-day, 20 deg. C	DAILY MX	report only	all year
002	pH	MINIMUM	>= 7 SU	all year
002	pH	MAXIMUM	<= 9 SU	all year
002	pH	MINIMUM	report only	all year
002	pH	MAXIMUM	report only	all year
002	Solids, total suspended	DAILY MN	report only	all year
002	Solids, total suspended	MO AVG	<= 30 mg/L	all year
002	Solids, total suspended	DAILY MX	report only	all year
002	Nitrogen, ammonia total [as N]	DAILY MN	report only	all year
002	Nitrogen, ammonia total [as N]	30DA AVG	report only	all year
002	Nitrogen, ammonia total [as N]	DAILY MX	report only	all year
002	Flow, in conduit or thru treatment plant	MO AVG	report only	all year
002	Flow, in conduit or thru treatment plant	DAILY MX	report only	all year
002	E. coli	DAILY MN	report only	Apr, May, Jun, Jul, Aug, Sep, Oct
002	E. coli	30DAVGEO	<= 126 #/100mL	Apr, May, Jun, Jul, Aug, Sep, Oct
002	E. coli	DAILY MX	<= 409 #/100mL	Apr, May, Jun, Jul, Aug, Sep, Oct
002	Flow, total	TOTAL	report only	all year