VDOT - Main — NPDES permit VA0023108: limits, due date and EPA's record

NPDES permit VA0023108 · Minor POTW · effective, expires 2027-09-30 · EPA's file as of 2026-09-19

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

Reporting

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

Limits in force (25)

Outfall	Parameter	Statistic	Limit	Months
001	Temperature, water deg. centigrade	DAILY MX	report only	all year
001	Oxygen, dissolved [DO]	MINIMUM	>= 6 mg/L	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 24 mg/L	all year
001	BOD, 5-day, 20 deg. C	WKLY AVG	<= 36 mg/L	all year
001	BOD, 5-day, 20 deg. C	MO AVG	<= 1800 g/d	all year
001	BOD, 5-day, 20 deg. C	WKLY AVG	<= 2700 g/d	all year
001	pH	MINIMUM	>= 6 SU	all year
001	pH	MAXIMUM	<= 9 SU	all year
001	Solids, total suspended	MO AVG	<= 30 mg/L	all year
001	Solids, total suspended	WKLY AVG	<= 45 mg/L	all year
001	Solids, total suspended	MO AVG	<= 2300 g/d	all year
001	Solids, total suspended	WKLY AVG	<= 3400 g/d	all year
001	Solids, total suspended	MO AVG	report only	all year
001	Nitrogen, ammonia total [as N]	MO AVG	<= .67 mg/L	Jun, Jul, Aug, Sep, Oct, Nov
001	Nitrogen, ammonia total [as N]	MO AVG	<= 1.02 mg/L	Jan, Feb, Mar, Apr, May, Dec
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= .67 mg/L	Jun, Jul, Aug, Sep, Oct, Nov
001	Nitrogen, ammonia total [as N]	WKLY AVG	<= 1.02 mg/L	Jan, Feb, Mar, Apr, May, Dec
001	Flow, in conduit or thru treatment plant	MO AVG	<= .02 MGD (alert)	all year
001	Flow, in conduit or thru treatment plant	DAILY MX	report only (alert)	all year
001	Chlorine, total residual	MO AVG	<= 2 ug/L	all year
001	Chlorine, total residual	WKLY AVG	<= 2.5 ug/L	all year
001	Chlorine, total residual	MINIMUM	>= .6 mg/L	all year
001	BOD, percent removal [total]	MO AV MN	>= 85 %	all year
001	E. coli	GEO MEAN	<= 126 #/100mL	all year
001	Solids, suspended percent removal	MO AV MN	>= 85 %	all year