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Greenbrier State Park WWTP

Sewage treatment plant, Boonsboro, Maryland. NPDES permit MD0023868, in force until May 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (27 values), outfall 101 form A monthly (2 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (41)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly maximumreport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly maximumreport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly maximumreport only (deg F)all year001
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year001
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 13 lb/dall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 19 lb/dall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 8.5 SUall year001
Solids, total suspendedmaximum monthly average≤ 30 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall year001
Solids, total suspendedmaximum monthly average≤ 13 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 19 lb/dall year001
Nitrogen, ammonia total [as N]maximum monthly average≤ 1.6 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 2.2 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ .93 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 2.2 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum daily average≤ 5.4 mg/LMay–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 4.4 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 3.5 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 4.4 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ .67 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ .92 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum daily average≤ .4 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ .92 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum daily average≤ 2.3 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 1.8 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.5 lb/dMay–Oct001
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.8 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
E. colimonthly median of logs≤ 126 MPN/100mLall year001
BOD, 5-day, percent removalminimum≥ 85 %all year001
Solids, suspended percent removalminimum≥ 85 %all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year101
Solids, total suspendedmonthly averagereport only (mg/L)all year101

How strict are these limits?

Cited limits by parameter: Maryland'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/MD0023868 · MCP: https://passage-data.com/mcp