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Commercial Physical Research, Montgomery Twp, New Jersey. NPDES permit NJ0026140 expired Sep 30, 2023; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | instantaneous minimum | report only (deg C) | all year |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | all year |
| Oxygen, dissolved [DO] | daily minimum | ≥ 4 mg/L | all year |
| Oxygen, dissolved [DO] | monthly average minimum | ≥ 5 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 8 mg/L | all year |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 16 mg/L | all year |
| pH | instantaneous minimum | ≥ 6 SU | all year |
| pH | instantaneous maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 20 mg/L | all year |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | all year |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2 mg/L | all year |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, nitrate total [as N] | daily maximum | ≤ 10 mg/L | all year |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | May–Oct |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | May–Oct |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year |
| Cadmium, total recoverable | monthly average | report only (ug/L) | all year |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year |
| Copper, total recoverable | monthly average | report only (ug/L) | all year |
| Copper, total recoverable | monthly average | report only (ug/L) | all year |
| Copper, total recoverable | daily maximum | ≤ 12.9 ug/L | all year |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year |
| E. coli | instantaneous maximum | report only (#/100mL) | all year |
| Chemical Oxygen Demand [COD] | monthly average | ≤ 100 mg/L | all year |
| Chemical Oxygen Demand [COD] | daily maximum | ≤ 200 mg/L | all year |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | minimum | report only (%) | all year |
Cited limits by parameter: New Jersey's rules and the federal ones.
Same industry: the 9 Engineering, Accounting, Research and Management Services permits in New Jersey.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/NJ0026140 · MCP: https://passage-data.com/mcp