NPDES permit RI0000191 · Major NON-POTW · effective, expires 2027-03-31 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31.
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 | Total production - mass | MO AVG | report only | all year |
| 001 | Total production - mass | MO AVG | <= 68000 lb/d | all year |
| 001 | Total production - mass | MO AVG | <= 60000 lb/d | all year |
| 001 | Total production - mass | MO AVG | <= 52000 lb/d | all year |
| 001 | Total production - mass | MO AVG | <= 44000 lb/d | all year |
| 001 | Total production - mass | MO AVG | <= 36000 lb/d | all year |
| 001 | Total production - mass | MO AVG | <= 28000 lb/d | all year |
| 001 | Total production - mass | DAILY MX | report only | all year |
| 001 | Total production - mass | DAILY MX | report only | all year |
| 001 | Total production - mass | DAILY MX | report only | all year |
| 001 | Total production - mass | DAILY MX | report only | all year |
| 001 | Total production - mass | DAILY MX | report only | all year |
| 001 | Total production - mass | DAILY MX | report only | all year |
| 001 | Total production - mass | DAILY MX | report only | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 251 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 224 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 198 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 172 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 145 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 119 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 92 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 502 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 449 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 396 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 343 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 290 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 238 lb/d | all year |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 185 lb/d | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | pH | MAXIMUM | <= 9 SU | all year |
| 001 | Solids, total suspended | MO AVG | <= 676 lb/d | all year |
| 001 | Solids, total suspended | MO AVG | <= 605 lb/d | all year |
| 001 | Solids, total suspended | MO AVG | <= 534 lb/d | all year |
| 001 | Solids, total suspended | MO AVG | <= 463 lb/d | all year |
| 001 | Solids, total suspended | MO AVG | <= 392 lb/d | all year |
| 001 | Solids, total suspended | MO AVG | <= 320 lb/d | all year |
| 001 | Solids, total suspended | MO AVG | <= 249 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 1353 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 1210 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 1068 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 926 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 783 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 641 lb/d | all year |
| 001 | Solids, total suspended | DAILY MX | <= 498 lb/d | all year |
| 001 | Nitrogen, total [as N] | MO AVG | report only | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, total [as N] | MO AVG | report only | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Nitrogen, total [as N] | DAILY MX | report only | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, total [as N] | DAILY MX | report only | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 68.4 mg/L | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | MO AVG | <= 145 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 429 mg/L | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | <= 834 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Nitrogen, nitrite total [as N] | MO AVG | report only | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, nitrite total [as N] | MO AVG | report only | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Nitrogen, nitrite total [as N] | DAILY MX | report only | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, nitrite total [as N] | DAILY MX | report only | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Nitrogen, nitrate total [as N] | MO AVG | report only | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Nitrogen, nitrate total [as N] | MO AVG | report only | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, nitrate total [as N] | DAILY MX | report only | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Nitrogen, nitrate total [as N] | DAILY MX | report only | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, Kjeldahl, total [as N] | MO AVG | report only | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, Kjeldahl, total [as N] | MO AVG | report only | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Nitrogen, Kjeldahl, total [as N] | DAILY MX | report only | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, Kjeldahl, total [as N] | DAILY MX | report only | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Phosphorus, total [as P] | MO AVG | report only | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Phosphorus, total [as P] | MO AVG | report only | Jan, Feb, Mar, Nov, Dec |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | Jan, Feb, Mar, Nov, Dec |
| 001 | Sulfide, total [as S] | MO AVG | <= 7.6 lb/d | all year |
| 001 | Sulfide, total [as S] | MO AVG | <= 6.8 lb/d | all year |
| 001 | Sulfide, total [as S] | MO AVG | <= 6 lb/d | all year |
| 001 | Sulfide, total [as S] | MO AVG | <= 5.2 lb/d | all year |
| 001 | Sulfide, total [as S] | MO AVG | <= 4.4 lb/d | all year |
| 001 | Sulfide, total [as S] | MO AVG | <= 3.6 lb/d | all year |
| 001 | Sulfide, total [as S] | MO AVG | <= 2.8 lb/d | all year |
| 001 | Sulfide, total [as S] | DAILY MX | <= 15.2 lb/d | all year |
| 001 | Sulfide, total [as S] | DAILY MX | <= 13.6 lb/d | all year |
| 001 | Sulfide, total [as S] | DAILY MX | <= 12 lb/d | all year |
| 001 | Sulfide, total [as S] | DAILY MX | <= 10.4 lb/d | all year |
| 001 | Sulfide, total [as S] | DAILY MX | <= 8.8 lb/d | all year |
| 001 | Sulfide, total [as S] | DAILY MX | <= 7.2 lb/d | all year |
| 001 | Sulfide, total [as S] | DAILY MX | <= 5.6 lb/d | all year |
| 001 | Cadmium, total [as Cd] | MO AVG | report only | all year |
| 001 | Cadmium, total [as Cd] | DAILY MX | report only | all year |
| 001 | Chromium, hexavalent [as Cr] | MO AVG | <= 105 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | MO AVG | <= 105 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | MO AVG | <= 105 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | MO AVG | <= 105 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | MO AVG | <= 105 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | MO AVG | <= 105 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | MO AVG | <= 105 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY MX | <= 149 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY MX | <= 149 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY MX | <= 149 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY MX | <= 149 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY MX | <= 149 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY MX | <= 149 ug/L | all year |
| 001 | Chromium, hexavalent [as Cr] | DAILY MX | <= 149 ug/L | all year |
| 001 | Chromium, total [as Cr] | MO AVG | <= 2.28 lb/d | all year |
| 001 | Chromium, total [as Cr] | MO AVG | <= 2.04 lb/d | all year |
| 001 | Chromium, total [as Cr] | MO AVG | <= 1.8 lb/d | all year |
| 001 | Chromium, total [as Cr] | MO AVG | <= 1.56 lb/d | all year |
| 001 | Chromium, total [as Cr] | MO AVG | <= 1.32 lb/d | all year |
| 001 | Chromium, total [as Cr] | MO AVG | <= 1.08 lb/d | all year |
| 001 | Chromium, total [as Cr] | MO AVG | <= .84 lb/d | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= 4.56 lb/d | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= 4.08 lb/d | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= 3.6 lb/d | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= 3.12 lb/d | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= 2.64 lb/d | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= 2.16 lb/d | all year |
| 001 | Chromium, total [as Cr] | DAILY MX | <= 1.68 lb/d | all year |
| 001 | Copper, total [as Cu] | MO AVG | <= 39.19 ug/L | all year |
| 001 | Copper, total [as Cu] | MO AVG | <= 207 ug/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= 54.28 ug/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= 241 ug/L | all year |
| 001 | Lead, total [as Pb] | MO AVG | report only | all year |
| 001 | Lead, total [as Pb] | DAILY MX | report only | all year |
| 001 | Nickel, total [as Ni] | MO AVG | report only | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | report only | all year |
| 001 | Silver, total [as Ag] | MO AVG | report only | all year |
| 001 | Silver, total [as Ag] | DAILY MX | report only | all year |
| 001 | Zinc, total [as Zn] | MO AVG | report only | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | report only | all year |
| 001 | Aluminum, total [as Al] | MO AVG | <= 797 ug/L | all year |
| 001 | Aluminum, total [as Al] | MO AVG | <= 1338 ug/L | all year |
| 001 | Aluminum, total [as Al] | DAILY MX | <= 6874 ug/L | all year |
| 001 | Aluminum, total [as Al] | DAILY MX | <= 2108 ug/L | all year |
| 001 | Phenol | MO AVG | <= 51 ug/L | all year |
| 001 | Phenol | DAILY MX | <= 2300 ug/L | all year |
| 001 | Phenols | MO AVG | <= 1.9 lb/d | all year |
| 001 | Phenols | MO AVG | <= 1.7 lb/d | all year |
| 001 | Phenols | MO AVG | <= 1.5 lb/d | all year |
| 001 | Phenols | MO AVG | <= 1.3 lb/d | all year |
| 001 | Phenols | MO AVG | <= 1.1 lb/d | all year |
| 001 | Phenols | MO AVG | <= .9 lb/d | all year |
| 001 | Phenols | MO AVG | <= .7 lb/d | all year |
| 001 | Phenols | DAILY MX | <= 3.8 lb/d | all year |
| 001 | Phenols | DAILY MX | <= 3.4 lb/d | all year |
| 001 | Phenols | DAILY MX | <= 3 lb/d | all year |
| 001 | Phenols | DAILY MX | <= 2.6 lb/d | all year |
| 001 | Phenols | DAILY MX | <= 2.2 lb/d | all year |
| 001 | Phenols | DAILY MX | <= 1.8 lb/d | all year |
| 001 | Phenols | DAILY MX | <= 1.4 lb/d | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | <= .49 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | <= .49 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | <= .49 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | <= .49 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | <= .49 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | <= .49 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | <= .49 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Chemical Oxygen Demand [COD] | MO AVG | <= 3062 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | MO AVG | <= 2740 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | MO AVG | <= 2418 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | MO AVG | <= 2096 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | MO AVG | <= 1773 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | MO AVG | <= 1451 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | MO AVG | <= 1128 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | DAILY MX | <= 6125 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | DAILY MX | <= 5480 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | DAILY MX | <= 4836 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | DAILY MX | <= 4191 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | DAILY MX | <= 3546 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | DAILY MX | <= 2902 lb/d | all year |
| 001 | Chemical Oxygen Demand [COD] | DAILY MX | <= 2257 lb/d | all year |
| 001 | LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia | MINIMUM | >= 50 % | all year |
| 001 | LC50 Static Renewal 48Hr Acute Pimephales promelas | MINIMUM | >= 55 % | all year |
| 002 | Temperature, water deg. fahrenheit | DAILY MX | report only | all year |
| 002 | Temperature, water deg. fahrenheit | DAILY MX | <= 80 deg F | all year |
| 002 | pH | MINIMUM | report only | all year |
| 002 | pH | MAXIMUM | report only | all year |
| 002 | Flow, in conduit or thru treatment plant | MO AVG | <= .12 MGD | all year |
| 004 | Tetrachloroethylene | MO AVG | report only | all year |
| 004 | Tetrachloroethylene | DAILY MX | report only | all year |
| 004 | trans-1,2-Dichloroethylene | MO AVG | report only | all year |
| 004 | trans-1,2-Dichloroethylene | DAILY MX | report only | all year |
| 004 | Vinyl chloride | MO AVG | report only | all year |
| 004 | Vinyl chloride | DAILY MX | report only | all year |
| 004 | Trichloroethylene | MO AVG | report only | all year |
| 004 | Trichloroethylene | DAILY MX | report only | all year |
| 004 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 004 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
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