Passage Data · Check a report · Use it from your AI

Mount ST.Marys College

Noncommercial Research Organizations, Emmitsburg, Maryland. NPDES permit MD0023230, in force until Aug 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 (33 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 (39)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 9 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum weekly average≤ 14 mg/Lall year001
BOD, 5-day, 20 deg. Cmaximum monthly average≤ 12 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≤ 9 mg/Lall year001
Solids, total suspendedmaximum weekly average≤ 14 mg/Lall year001
Solids, total suspendedmaximum monthly average≤ 12 lb/dall year001
Solids, total suspendedmaximum weekly average≤ 19 lb/dall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]annual maximumreport only (lb/yr)all year001
Nitrogen, total [as N]monthly totalreport only (lb/mo)all year001
Nitrogen, organic total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]maximum monthly average≤ .3 mg/LJun–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 1.1 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
Nitrogen, ammonia total [as N]maximum daily average≤ 1.1 mg/LJun–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 4.1 mg/LJan, Feb, Mar, Apr, May, Nov, Dec001
Nitrogen, ammonia total [as N]maximum monthly average≤ .4 lb/dJun–Oct001
Nitrogen, ammonia total [as N]maximum monthly average≤ 1.5 lb/dJan, Feb, Mar, Apr, May, Nov, Dec001
Nitrogen, ammonia total [as N]maximum daily average≤ 1.5 lb/dJun–Oct001
Nitrogen, ammonia total [as N]maximum daily average≤ 5.5 lb/dJan, Feb, Mar, Apr, May, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]annual maximumreport only (lb/yr)all year001
Phosphorus, total [as P]monthly totalreport only (lb/mo)all year001
Phosphate, ortho [as P]monthly averagereport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualinstantaneous maximum≤ .1 mg/Lall year001
E. colimaximum monthly geometric mean≤ 126 MPN/100mLall year001
BOD, 5-day, percent removalminimum≥ 85 %all year001
Solids, suspended percent removalminimum≥ 85 %all year001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
PFAS Summinimumreport only (mg/L)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.

Same industry: the 9 Engineering, Accounting, Research and Management Services permits in Maryland.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MD0023230 · MCP: https://passage-data.com/mcp