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VDOC - Central Region

Correctional Institutions, Dillwyn, Virginia. NPDES permit VA0066460, in force until Oct 31, 2028. Last 12 months: no values over a limit, 3 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (23 values), form S1 twice a year
Renewal application due
May 4, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 3 of 14 reports late

Limits in force (27)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 34000 g/dall year
Solids, total suspendedmaximum weekly average≤ 51000 g/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]maximum weekly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly average≤ 3 mg/Lall year
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 4.5 mg/Lall year
Nitrogen, Kjeldahl, total [as N]monthly average≤ 3400 g/dall year
Nitrogen, Kjeldahl, total [as N]maximum weekly average≤ 5100 g/dall year
Hardness, total [as CaCO3]minimum≥ 150 mg/Lall year
Copper, total recoverablemonthly average≤ 20 ug/Lall year
Copper, total recoverablemaximum weekly average≤ 20 ug/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ .3 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD) (alert, not enforceable)all year
E. colimonthly average≤ 126 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 7 mg/Lall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 10.5 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 7900 g/dall year
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 11900 g/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

New limits from Nov 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Nitrogen, ammonia total [as N], monthly average1.47 mg/Lnew0.07 mg/L (9 values)0.0476×
Nitrogen, ammonia total [as N], maximum weekly average1.98 mg/Lnew0.16 mg/L (9 values)0.0808×

How strict are these limits?

Cited limits by parameter: Virginia's rules and the federal ones.

Same industry: the 9 Justice, Public Order and Safety permits in Virginia.

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Your permit document is the final word. As JSON: /api/v1/permits/VA0066460 · MCP: https://passage-data.com/mcp