NPDES permit RI0023761 · Minor NON-POTW · effective, expires 2026-09-30 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-06-30. Most often over: Iron, total [as Fe] (1).
Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Sulfate [as S] | MO AVG | report only | all year |
| 001 | pH | MINIMUM | >= 6.5 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | MO AVG | <= 25 mg/L | all year |
| 001 | Solids, total suspended | DAILY MX | <= 45 mg/L | all year |
| 001 | Oil & Grease | MO AVG | report only | all year |
| 001 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 001 | Nitrogen, total [as N] | MO AVG | report only | all year |
| 001 | Nitrogen, total [as N] | DAILY MX | report only | all year |
| 001 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 001 | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| 001 | Phosphorus, total [as P] | MO AVG | report only | all year |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| 001 | Iron, total [as Fe] | MO AVG | <= .8 mg/L | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Perchlorate [ClO4] | MO AVG | report only | all year |
| 001 | Perchlorate [ClO4] | DAILY MX | report only | all year |
| 002 | Sulfate [as S] | MO AVG | report only | all year |
| 002 | pH | MINIMUM | >= 6.5 SU | all year |
| 002 | pH | MAXIMUM | <= 9 SU | all year |
| 002 | Solids, total suspended | MO AVG | <= 15 mg/L | all year |
| 002 | Solids, total suspended | DAILY MX | <= 23 mg/L | all year |
| 002 | Oil & Grease | MO AVG | <= 10 mg/L | all year |
| 002 | Oil & Grease | DAILY MX | <= 15 mg/L | all year |
| 002 | Nitrogen, total [as N] | MO AVG | report only | all year |
| 002 | Nitrogen, total [as N] | DAILY MX | report only | all year |
| 002 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 002 | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| 002 | Phosphorus, total [as P] | MO AVG | report only | all year |
| 002 | Phosphorus, total [as P] | DAILY MX | report only | all year |
| 002 | Iron, total [as Fe] | MO AVG | <= .8 mg/L | all year |
| 002 | Lead, total [as Pb] | MO AVG | <= 1.55 ug/L | all year |
| 002 | Lead, total [as Pb] | DAILY MX | <= 39.9 ug/L | all year |
| 002 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 002 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 002 | Perchlorate [ClO4] | MO AVG | report only | all year |
| 002 | Perchlorate [ClO4] | DAILY MX | report only | all year |
Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states