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Industrial Inorganic Chemicals, Claymont, Delaware. NPDES permit DE0000655 expired Dec 31, 2024; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| pH | daily minimum | report only (SU) | all year |
| pH | daily maximum | report only (SU) | all year |
| Solids, total suspended | daily maximum | report only (mg/L) | all year |
| Oil & Grease | daily maximum | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 19 mg/L | all year |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year |
| Iron, total recoverable | daily maximum | report only (mg/L) | all year |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year |
| Surfactants [MBAS] | daily maximum | report only (mg/L) | all year |
| Benzidine | daily maximum | report only (mg/L) | all year |
| DDT/DDD/DDE, sum of p,p' & o,p' isomers | daily maximum | report only (ug/L) | all year |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| pH range excursions, > 60 minutes | monthly total | ≤ 0 occur/mo | all year |
| pH range excursions, monthly total accum | maximum | ≤ 446 min | all year |
Cited limits by parameter: Delaware's rules and the federal ones.
Same industry: the 5 Chemicals and Allied Products permits in Delaware.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/DE0000655 · MCP: https://passage-data.com/mcp