CH SP ACQUISITION LLC — NPDES permit MT0032174: limits, due date and EPA's record

NPDES permit MT0032174 · Minor NON-POTW · effective, expires 2030-10-31 · EPA's file as of 2026-09-19

Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

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

Reporting

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

Limits in force (19)

Outfall	Parameter	Statistic	Limit	Months
003	Temperature, water deg. fahrenheit	MO AVG	report only	all year
003	Flow rate	MO AVG	report only	all year
003	Flow rate	DAILY MX	report only	all year
003	BOD, 5-day, 20 deg. C	MO AVG	<= 30 mg/L	all year
003	BOD, 5-day, 20 deg. C	MX WK AV	<= 45 mg/L	all year
003	pH	DAILY MN	>= 6 SU	all year
003	pH	DAILY MX	<= 9 SU	all year
003	Solids, total suspended	MO AVG	<= 30 mg/L	all year
003	Solids, total suspended	MX WK AV	<= 45 mg/L	all year
003	Nitrogen, total [as N]	MO AVG	report only	all year
003	Nitrogen, total [as N]	DAILY MX	<= 5 mg/L	all year
003	Nitrogen, ammonia total [as N]	MO AVG	report only	all year
003	Nitrite + Nitrate total [as N]	MO AVG	report only	all year
003	Phosphorus, total [as P]	MO AVG	report only	all year
003	Phosphorus, total [as P]	DAILY MX	report only	all year
003	E. coli, MTEC-MF	MOAV GEO	<= 2.2 #/100mL	all year
003	E. coli, MTEC-MF	MX WK AV	<= 12.6 #/100mL	all year
003	Chlorine, total residual	MO AVG	<= .09999 mg/L	all year
003	Chlorine, total residual	DAILY MX	<= .09999 mg/L	all year