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Alkalies And Chlorine, major discharger, Ashtabula, Ohio. NPDES permit OH0000752 expired Aug 31, 2024; its limits still apply. Last 12 months: over a limit once (last November 2025), 6 required values missing, 7 of 81 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | Mercury, total low level, daily maximum | 351 | ≤ 250 ng/L | 40% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | 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 | report only (mg/L) | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 001 |
| Rainfall | monthly average | report only (in) | all year | 001 |
| Rainfall | daily maximum | report only (in) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .038 mg/L | all year | 001 |
| Mercury, total low level | monthly average | ≤ 50 ng/L | all year | 001 |
| Toxicity [acute], Ceriodaphnia dubia | monthly average | report only (tox acute) | Mar, Jun, Aug, Dec | 001 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | report only (tox acute) | Mar, Jun, Aug, Dec | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | monthly average | report only (tox chronic) | Aug | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | report only (tox chronic) | Aug | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | monthly average | report only (tox acute) | Mar, Jun, Aug, Dec | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox acute) | Mar, Jun, Aug, Dec | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | monthly average | report only (tox chronic) | Aug | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox chronic) | Aug | 001 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 001 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 002 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 002 |
| pH | daily minimum | ≥ 6.5 SU | all year | 003 |
| pH | daily maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 003 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 003 |
| pH | daily minimum | ≥ 6.5 SU | Mar, Jun, Aug, Dec | 005 |
| pH | daily maximum | ≤ 9 SU | Mar, Jun, Aug, Dec | 005 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | Mar, Jun, Aug, Dec | 005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | Mar, Jun, Aug, Dec | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Mar, Jun, Aug, Dec | 005 |
| Mercury, total low level | monthly average | report only (ng/L) | Mar, Jun, Aug, Dec | 005 |
| Mercury, total low level | daily maximum | report only (ng/L) | Mar, Jun, Aug, Dec | 005 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 091 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 091 |
| pH | daily minimum | report only (SU) | all year | 601 |
| pH | daily maximum | report only (SU) | all year | 601 |
| Solids, total suspended | monthly average | ≤ 58 mg/L | all year | 601 |
| Solids, total suspended | daily maximum | ≤ 120 mg/L | all year | 601 |
| Solids, total suspended | monthly average | ≤ 25.3 kg/d | all year | 601 |
| Solids, total suspended | daily maximum | ≤ 52.3 kg/d | all year | 601 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 601 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 601 |
| Mercury, total low level | daily maximum | ≤ 250 ng/L | all year | 601 |
| Mercury, total low level | daily maximum | ≤ .000109 kg/d | all year | 601 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 601 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 601 |
| pH | daily minimum | report only (SU) | all year | 602 |
| pH | daily maximum | report only (SU) | all year | 602 |
| Solids, total suspended | monthly average | ≤ 58 mg/L | all year | 602 |
| Solids, total suspended | daily maximum | ≤ 120 mg/L | all year | 602 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 602 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 602 |
| Chlorine, total residual | daily maximum | report only (mg/L) | all year | 602 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 602 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 602 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 602 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 602 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 802 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 802 |
| Mercury, total low level | monthly average | report only (ng/L) | all year | 802 |
| Mercury, total low level | daily maximum | report only (ng/L) | all year | 802 |
| %Effect Static Renewal 48Hr Acute Ceriodaphnia dubia | monthly average | report only (%) | Mar, Jun, Aug, Dec | 802 |
| %Effect Static Renewal 48Hr Acute Ceriodaphnia dubia | daily maximum | report only (%) | Mar, Jun, Aug, Dec | 802 |
| %Effect Static Renewal 96Hr Acute Pimephales promelas | monthly average | report only (%) | Mar, Jun, Aug, Dec | 802 |
| %Effect Static Renewal 96Hr Acute Pimephales promelas | daily maximum | report only (%) | Mar, Jun, Aug, Dec | 802 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | monthly average | report only (%) | Aug | 802 |
| %Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia | daily maximum | report only (%) | Aug | 802 |
| %Effect Static Renewal 7Day Chronic Pimephales promelas | monthly average | report only (%) | Aug | 802 |
| %Effect Static Renewal 7Day Chronic Pimephales promelas | daily maximum | report only (%) | Aug | 802 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 68 Chemicals and Allied Products permits in Ohio.
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