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Big Stone Gap Town

Sewage treatment plant, major discharger, Big Stone Gap, Virginia. NPDES permit VA0020940, in force until Sep 30, 2028. Last 12 months: over a limit 4 times (last August 2026), 5 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form P monthly (16 values), form Q1 quarterly, form Q2 quarterly
Renewal application due
Apr 3, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 4 of 20 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
January 2026E. coli, geometric mean317≤ 126 #/100mL152%
August 2026Solids, total suspended, monthly average35≤ 30 mg/L17%
August 2026Solids, total suspended, weekly average120≤ 45 mg/L167%
August 2026Solids, total suspended, weekly average4834≤ 680 kg/d611%

Limits in force (28)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/LJan, Feb, Mar, Apr, May, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 450 kg/dJan, Feb, Mar, Apr, May, Dec
BOD, 5-day, 20 deg. Cweekly average≤ 680 kg/dJan, Feb, Mar, Apr, May, Dec
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 450 kg/dall year
Solids, total suspendedweekly average≤ 680 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 8.6 mg/LJan, Feb, Mar, Apr, May, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.9 mg/LJun–Nov
Nitrogen, ammonia total [as N]monthly maximum≤ 12 mg/LJan, Feb, Mar, Apr, May, Dec
Nitrogen, ammonia total [as N]monthly maximum≤ 4 mg/LJun–Nov
Flow, in conduit or thru treatment plantmonthly average≤ 4 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmaximumreport only (MGD) (alert, not enforceable)all year
BOD, percent removal [total]monthly average minimum≥ 85 %all year
E. coligeometric mean≤ 126 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LJun–Nov
BOD, carbonaceous [5 day, 20 C]weekly average≤ 22 mg/LJun–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 230 kg/dJun–Nov
BOD, carbonaceous [5 day, 20 C]weekly average≤ 330 kg/dJun–Nov
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

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VA0020940 · MCP: https://passage-data.com/mcp