Shenandoah National Park — NPDES permit VA0024414: limits, due date and EPA's record

NPDES permit VA0024414 · Minor FEDERAL · effective, expires 2030-11-30 · EPA's file as of 2026-09-19

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

Reporting

Reports are due about 10 days after each monitoring period ends (the most common figure among VA permits in EPA's filings — check your permit).

Limits in force (22)

Outfall	Parameter	Statistic	Limit	Months
001	Oxygen, dissolved [DO]	MINIMUM	>= 6 mg/L	all year
001	pH	MINIMUM	>= 6.5 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	Solids, total suspended	MO AVG	<= 18 mg/L	all year
001	Solids, total suspended	MX WK AV	<= 27 mg/L	all year
001	Solids, total suspended	MO MAX	<= 2.4 kg/d	all year
001	Solids, total suspended	MX WK AV	<= 3.6 kg/d	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Nitrogen, ammonia total [as N]	MO AVG	<= 3.8 mg/L	Jun, Jul, Aug, Sep, Oct, Nov
001	Nitrogen, ammonia total [as N]	MO AVG	<= 7.7 mg/L	Jan, Feb, Mar, Apr, May, Dec
001	Nitrogen, ammonia total [as N]	MX WK AV	<= 3.8 mg/L	Jun, Jul, Aug, Sep, Oct, Nov
001	Nitrogen, ammonia total [as N]	MX WK AV	<= 7.7 mg/L	Jan, Feb, Mar, Apr, May, Dec
001	Flow, in conduit or thru treatment plant	MO AVG	<= .035 MGD (alert)	all year
001	Flow, in conduit or thru treatment plant	MO MAX	report only (alert)	all year
001	E. coli	MO GEOMN	<= 126 #/100mL	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	<= 23 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	MX WK AV	<= 34 mg/L	all year
001	BOD, carbonaceous [5 day, 20 C]	MO MAX	<= 3 kg/d	all year
001	BOD, carbonaceous [5 day, 20 C]	MX WK AV	<= 4.5 kg/d	all year
001	BOD, carbonaceous [5 day, 20 C]	MO AVG	report only	all year
001	BOD, carb-5 day, 20 deg C, percent removal	MO AV MN	>= 85 %	all year
001	Solids, suspended percent removal	MO AV MN	>= 85 %	all year