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Industrial or other facility, Ridgely, Maryland. NPDES permit MD3893F24, in force until Jun 30, 2031. Last 12 months: no values over a limit, 9 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | maximum monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum monthly average | ≤ 30 mg/L | all year | 001 |
| Nitrogen, total [as N] | maximum monthly average | ≤ 20 mg/L | all year | 001 |
| Nitrogen, total [as N] | cumulative total | ≤ 608.8 lb/yr | all year | 001 |
| Nitrogen, nitrite total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | maximum monthly average | ≤ 10000 gal/d | all year | 001 |
| Flow, in conduit or thru treatment plant | maximum daily average | ≤ 25000 gal/d | all year | 001 |
| Nitrogen, total [as N] | annual average | report only (mg/L) | all year | MW1 |
| Nitrogen, nitrite total [as N] | annual average | report only (mg/L) | all year | MW1 |
| Nitrogen, nitrate total [as N] | annual average | report only (mg/L) | all year | MW1 |
| Nitrogen, Kjeldahl, total [as N] | annual average | report only (mg/L) | all year | MW1 |
| Chloride [as Cl] | annual average | report only (mg/L) | all year | MW1 |
| E. coli | annual average | report only (MPN/100mL) | all year | MW1 |
| Solids, total dissolved | annual average | report only (mg/L) | all year | MW1 |
| Nitrogen, total [as N] | annual average | report only (mg/L) | all year | MW2 |
| Nitrogen, nitrite total [as N] | annual average | report only (mg/L) | all year | MW2 |
| Nitrogen, nitrate total [as N] | annual average | report only (mg/L) | all year | MW2 |
| Nitrogen, Kjeldahl, total [as N] | annual average | report only (mg/L) | all year | MW2 |
| Chloride [as Cl] | annual average | report only (mg/L) | all year | MW2 |
| E. coli | annual average | report only (MPN/100mL) | all year | MW2 |
| Solids, total dissolved | annual average | report only (mg/L) | all year | MW2 |
| Nitrogen, total [as N] | maximum annual average | ≤ 10 mg/L | all year | MW3 |
| Nitrogen, nitrite total [as N] | maximum annual average | ≤ 1 mg/L | all year | MW3 |
| Nitrogen, nitrate total [as N] | maximum annual average | ≤ 10 mg/L | all year | MW3 |
| Nitrogen, Kjeldahl, total [as N] | annual average | report only (mg/L) | all year | MW3 |
| Chloride [as Cl] | maximum annual average | ≤ 250 mg/L | all year | MW3 |
| E. coli | monthly geometric mean | ≤ 2.2 MPN/100mL | all year | MW3 |
| Solids, total dissolved | maximum annual average | ≤ 500 mg/L | all year | MW3 |
| Nitrogen, total [as N] | maximum annual average | ≤ 10 mg/L | all year | MW4 |
| Nitrogen, nitrite total [as N] | maximum annual average | ≤ 1 mg/L | all year | MW4 |
| Nitrogen, nitrate total [as N] | maximum annual average | ≤ 10 mg/L | all year | MW4 |
| Nitrogen, Kjeldahl, total [as N] | annual average | report only (mg/L) | all year | MW4 |
| Chloride [as Cl] | maximum annual average | ≤ 250 mg/L | all year | MW4 |
| E. coli | monthly geometric mean | ≤ 2.2 MPN/100mL | all year | MW4 |
| Solids, total dissolved | maximum annual average | ≤ 500 mg/L | all year | MW4 |
| Nitrogen, total [as N] | maximum annual average | ≤ 10 mg/L | all year | MW5 |
| Nitrogen, nitrite total [as N] | maximum annual average | ≤ 1 mg/L | all year | MW5 |
| Nitrogen, nitrate total [as N] | maximum annual average | ≤ 10 mg/L | all year | MW5 |
| Nitrogen, Kjeldahl, total [as N] | annual average | report only (mg/L) | all year | MW5 |
| Chloride [as Cl] | maximum annual average | ≤ 250 mg/L | all year | MW5 |
| E. coli | monthly geometric mean | ≤ 2.2 MPN/100mL | all year | MW5 |
| Solids, total dissolved | maximum annual average | ≤ 500 mg/L | all year | MW5 |
| Nitrogen, total [as N] | maximum annual average | ≤ 10 mg/L | all year | MW6 |
| Nitrogen, nitrite total [as N] | maximum annual average | ≤ 1 mg/L | all year | MW6 |
| Nitrogen, nitrate total [as N] | maximum annual average | ≤ 10 mg/L | all year | MW6 |
| Nitrogen, Kjeldahl, total [as N] | annual average | report only (mg/L) | all year | MW6 |
| Chloride [as Cl] | maximum annual average | ≤ 250 mg/L | all year | MW6 |
| E. coli | monthly geometric mean | ≤ 2.2 MPN/100mL | all year | MW6 |
| Solids, total dissolved | maximum annual average | ≤ 500 mg/L | all year | MW6 |
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/MD3893F24 · MCP: https://passage-data.com/mcp