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National Security, Mansfield, Ohio. NPDES permit OH0125466, in force until Sep 30, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Flow rate | monthly average | report only (gal/d) | all year | 001 |
| Flow rate | daily maximum | report only (gal/d) | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 10 mg/L | all year | 001 |
| Rainfall | monthly average | report only (in) | all year | 001 |
| Rainfall | daily maximum | report only (in) | all year | 001 |
| Flow rate | monthly average | report only (gal/d) | all year | 002 |
| Flow rate | daily maximum | report only (gal/d) | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | 002 |
| Oxygen demand, chem. [low level] [COD] | monthly average | report only (mg/L) | all year | 002 |
| Oxygen demand, chem. [low level] [COD] | daily maximum | report only (mg/L) | all year | 002 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 10 mg/L | all year | 002 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 002 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | all year | 002 |
| Toluene | monthly average | report only (ug/L) | all year | 002 |
| Toluene | daily maximum | report only (ug/L) | all year | 002 |
| Benzene | monthly average | report only (ug/L) | all year | 002 |
| Benzene | daily maximum | report only (ug/L) | all year | 002 |
| Ethylbenzene | monthly average | report only (ug/L) | all year | 002 |
| Ethylbenzene | daily maximum | report only (ug/L) | all year | 002 |
| Phenol | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Phenol | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Naphthalene | monthly average | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Naphthalene | daily maximum | report only (ug/L) | Mar, Jun, Aug, Dec | 002 |
| Rainfall | monthly average | report only (in) | all year | 002 |
| Rainfall | daily maximum | report only (in) | all year | 002 |
| Xylene [mix of m+o+p] | monthly average | report only (ug/L) | all year | 002 |
| Xylene [mix of m+o+p] | daily maximum | report only (ug/L) | all year | 002 |
| Flow rate | monthly average | report only (gal/d) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Flow rate | daily maximum | report only (gal/d) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| pH | daily minimum | ≥ 6.5 SU | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| pH | daily maximum | ≤ 9 SU | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Rainfall | monthly average | report only (in) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Rainfall | daily maximum | report only (in) | Jan, Feb, Mar, Apr, Nov, Dec | 003 |
| Flow rate | monthly average | report only (gal/d) | all year | 004 |
| Flow rate | daily maximum | report only (gal/d) | all year | 004 |
| pH | daily minimum | ≥ 6.5 SU | all year | 004 |
| pH | daily maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 004 |
| Rainfall | monthly average | report only (in) | all year | 004 |
| Rainfall | daily maximum | report only (in) | all year | 004 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 7 National Security and International Affairs permits in Ohio.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/OH0125466 · MCP: https://passage-data.com/mcp