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Cheese, Natural And Processed, Middlefield, Ohio. NPDES permit OH0051276, in force until Mar 31, 2029. Last 12 months: over a limit 2 times (last February 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| February 2026 | Nitrogen, ammonia total [as N], daily maximum | 32.2 | ≤ 7.27 kg/d | 343% |
| February 2026 | Nitrogen, ammonia total [as N], daily maximum | 32.7 | ≤ 4.8 mg/L | 581% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | ≤ 28 deg C | May–Oct | 001 |
| Temperature, water deg. centigrade | monthly average | ≤ 20 deg C | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Temperature, water deg. centigrade | daily maximum | ≤ 30 deg C | May–Oct | 001 |
| Temperature, water deg. centigrade | daily maximum | ≤ 23 deg C | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Specific conductance | monthly average | report only (umho/cm) | all year | 001 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 7 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Turbidity [severity] | monthly average | report only (severity) | all year | 001 |
| Turbidity [severity] | daily maximum | report only (severity) | 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 |
| Toxicity [acute], Ceriodaphnia dubia | monthly average | report only (tox acute) | Sep | 001 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | report only (tox acute) | Sep | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | monthly average | report only (tox chronic) | Sep | 001 |
| Toxicity [chronic], Ceriodaphnia dubia | daily maximum | report only (tox chronic) | Sep | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | monthly average | report only (tox acute) | Sep | 001 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox acute) | Sep | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | monthly average | report only (tox chronic) | Sep | 001 |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | daily maximum | report only (tox chronic) | Sep | 001 |
| Solids, total dissolved- 180 deg. C | monthly average | ≤ 2427 mg/L | all year | 001 |
| Nitrogen, ammonia in bottom deposits | monthly average | report only (mg/kg) | all year | 571 |
| Nitrogen, ammonia in bottom deposits | daily maximum | report only (mg/kg) | all year | 571 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/kg) | all year | 571 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/kg) | all year | 571 |
| Nitrite plus nitrate in bottom deposits | monthly average | report only (mg/kg) | all year | 571 |
| Nitrite plus nitrate in bottom deposits | daily maximum | report only (mg/kg) | all year | 571 |
| Phosphorous, total, in bottom deposits | monthly average | report only (mg/kg) | all year | 571 |
| Phosphorous, total, in bottom deposits | daily maximum | report only (mg/kg) | all year | 571 |
| Potassium, in bottom deposits | monthly average | report only (mg/kg) | all year | 571 |
| Potassium, in bottom deposits | daily maximum | report only (mg/kg) | all year | 571 |
| Sludge weight, dry | monthly average | report only (dry ton) | all year | 571 |
| Sludge weight, dry | daily maximum | report only (dry ton) | all year | 571 |
| Solids, total, percent | monthly average | report only (%) | all year | 571 |
| Solids, total, percent | daily maximum | report only (%) | all year | 571 |
| Solids, volatile % of total solids | monthly average | report only (%) | all year | 571 |
| Solids, volatile % of total solids | daily maximum | report only (%) | all year | 571 |
| Sodium, sludge, total, dry weight [as Na] | monthly average | report only (mg/kg) | all year | 571 |
| Sodium, sludge, total, dry weight [as Na] | daily maximum | report only (mg/kg) | all year | 571 |
| Sludge waste from secondary clarifiers | monthly average | report only (gal) | Dec | 578 |
| Sludge waste from secondary clarifiers | daily maximum | report only (gal) | Dec | 578 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 601 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 601 |
| Specific conductance | monthly average | report only (umho/cm) | all year | 601 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | 601 |
| Solids, total suspended | monthly average | ≤ 8.45 mg/L | all year | 601 |
| Solids, total suspended | daily maximum | ≤ 18.6 mg/L | all year | 601 |
| Solids, total suspended | monthly average | ≤ 12.8 kg/d | all year | 601 |
| Solids, total suspended | daily maximum | ≤ 28.2 kg/d | all year | 601 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 601 |
| Oil and grease, hexane extr method | daily maximum | report only (mg/L) | all year | 601 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .7 mg/L | May–Oct | 601 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.4 mg/L | May–Oct | 601 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.8 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 601 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.06 kg/d | May–Oct | 601 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.64 kg/d | May–Oct | 601 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 7.27 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 601 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 601 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 601 |
| Phosphorus, total [as P] | monthly average | ≤ .6 mg/L | all year | 601 |
| Phosphorus, total [as P] | daily maximum | ≤ .9 mg/L | all year | 601 |
| Phosphorus, total [as P] | monthly average | ≤ .909 kg/d | all year | 601 |
| Phosphorus, total [as P] | daily maximum | ≤ 1.37 kg/d | all year | 601 |
| E. coli, MTEC-MF | monthly geometric mean | ≤ 126 MPN/100mL | May–Oct | 601 |
| E. coli, MTEC-MF | weekly geometric mean | ≤ 284 MPN/100mL | May–Oct | 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 |
| 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 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 6.3 mg/L | all year | 601 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 13.7 mg/L | all year | 601 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 9.54 kg/d | all year | 601 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 20.8 kg/d | all year | 601 |
| Specific conductance | monthly average | report only (umho/cm) | all year | 602 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | 602 |
| pH | daily minimum | report only (SU) | all year | 602 |
| pH | daily maximum | report only (SU) | all year | 602 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Mar, Jun, Sep, Dec | 602 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 602 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | Mar, Jun, Sep, Dec | 602 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 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 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | Mar, Jun, Sep, Dec | 602 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 602 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 801 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 801 |
| Specific conductance | monthly average | report only (umho/cm) | Mar, Jun, Sep, Dec | 801 |
| Specific conductance | daily maximum | report only (umho/cm) | Mar, Jun, Sep, Dec | 801 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 801 |
| pH | daily minimum | report only (SU) | all year | 801 |
| pH | daily maximum | report only (SU) | all year | 801 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Mar, Jun, Sep, Dec | 801 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | 801 |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 901 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 901 |
| Specific conductance | monthly average | report only (umho/cm) | all year | 901 |
| Specific conductance | daily maximum | report only (umho/cm) | all year | 901 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 901 |
| pH | daily minimum | report only (SU) | all year | 901 |
| pH | daily maximum | report only (SU) | all year | 901 |
| Solids, total dissolved- 180 deg. C | monthly average | report only (mg/L) | all year | 901 |
| Solids, total dissolved- 180 deg. C | daily maximum | report only (mg/L) | all year | 901 |
Cited limits by parameter: Ohio's rules and the federal ones.
Same industry: the 48 Food and Kindred Products permits in Ohio.
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