TUTHILL CORP BLUE MTN SKI AREA — NPDES permit PA0063428: limits, due date and EPA's record

NPDES permit PA0063428 · Minor NON-POTW · effective, expires 2026-10-31 · 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: BOD, carbonaceous [5 day, 20 C] (2).

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 (23)

Outfall	Parameter	Statistic	Limit	Months
002	Oxygen, dissolved [DO]	INST MIN	>= 5 mg/L	all year
002	pH	INST MIN	>= 6 SU	all year
002	pH	INST MAX	<= 9 SU	all year
002	Solids, total suspended	MO AVG	<= 30 mg/L	all year
002	Nitrogen, total [as N]	MO AVG	report only	all year
002	Nitrogen, ammonia total [as N]	MO AVG	report only	all year
002	Nitrogen, nitrate total [as N]	MO AVG	report only	all year
002	Nitrogen, Kjeldahl, total [as N]	MO AVG	report only	all year
002	Phosphorus, total [as P]	MO AVG	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	Chlorine, total residual	MO AVG	<= .5 mg/L	all year
002	Chlorine, total residual	INST MAX	<= 1.6 mg/L	all year
002	E. coli	QRTR AVG	report only	all year
002	Solids, total dissolved	QRTR AVG	<= 1000 mg/L	all year
002	Coliform, fecal general	GEO MEAN	<= 200 #/100mL	May, Jun, Jul, Aug, Sep
002	Coliform, fecal general	GEO MEAN	<= 2000 #/100mL	Jan, Feb, Mar, Apr, Oct, Nov, Dec
002	Coliform, fecal general	INST MAX	<= 1000 #/100mL	May, Jun, Jul, Aug, Sep
002	Coliform, fecal general	INST MAX	<= 10000 #/100mL	Jan, Feb, Mar, Apr, Oct, Nov, Dec
002	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 25 mg/L	all year
002	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
002	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
002	BOD, carb-5 day, 20 deg C, percent removal	MO AV MN	>= 85 %	all year