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Meat Packing Plants, major discharger, Worthington, Minnesota. NPDES permit MN0031178, in force until Jun 30, 2028. Last 12 months: over a limit 14 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Nitrogen, total [as N], monthly average | 179.25 | ≤ 134 mg/L | 34% |
| November 2025 | Nitrogen, total [as N], monthly average | 189.31 | ≤ 134 mg/L | 41% |
| December 2025 | Nitrogen, total [as N], monthly average | 177.85 | ≤ 134 mg/L | 33% |
| January 2026 | Nitrogen, total [as N], monthly average | 163.48 | ≤ 134 mg/L | 22% |
| February 2026 | Nitrogen, total [as N], monthly average | 163.23 | ≤ 134 mg/L | 22% |
| March 2026 | Nitrogen, total [as N], daily maximum | 199.51 | ≤ 194 mg/L | 3% |
| March 2026 | Nitrogen, total [as N], monthly average | 199.51 | ≤ 134 mg/L | 49% |
| April 2026 | Nitrogen, total [as N], monthly average | 184.67 | ≤ 134 mg/L | 38% |
| May 2026 | Nitrogen, total [as N], monthly average | 189.74 | ≤ 134 mg/L | 42% |
| June 2026 | Nitrogen, total [as N], daily maximum | 197.29 | ≤ 194 mg/L | 2% |
| June 2026 | Nitrogen, total [as N], monthly average | 197.29 | ≤ 134 mg/L | 47% |
| July 2026 | Nitrogen, total [as N], monthly average | 186.02 | ≤ 134 mg/L | 39% |
| August 2026 | Nitrogen, total [as N], monthly average | 193.94 | ≤ 134 mg/L | 45% |
| September 2026 | Nitrogen, total [as N], monthly average | 188.39 | ≤ 134 mg/L | 41% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Specific conductance | monthly maximum | report only (umho/cm) | all year | D059 |
| Oxygen, dissolved [DO] | monthly minimum | ≥ 5 mg/L | all year | D059 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | D059 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | D059 |
| pH | monthly minimum | ≥ 6 SU | all year | D059 |
| pH | monthly maximum | ≤ 9 SU | all year | D059 |
| Bicarbonate ion- [as HCO3] | monthly maximum | report only (mg/L) | all year | D059 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | D059 |
| Solids, total suspended | monthly maximum | report only (mg/L) | all year | D059 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | all year | D059 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | Mar, Jun, Sep, Dec | D059 |
| Oil and grease, hexane extr method | monthly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | D059 |
| Nitrogen, total [as N] | monthly average | ≤ 134 mg/L | all year | D059 |
| Nitrogen, total [as N] | daily maximum | ≤ 194 mg/L | all year | D059 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4 mg/L | all year | D059 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8 mg/L | all year | D059 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | D059 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | D059 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | D059 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | D059 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | D059 |
| Hardness, total [as CaCO3] | monthly maximum | report only (mg/L) | all year | D059 |
| Calcium, total [as Ca] | monthly maximum | report only (mg/L) | all year | D059 |
| Magnesium, total [as Mg] | monthly maximum | report only (mg/L) | all year | D059 |
| Sodium, total [as Na] | monthly maximum | report only (mg/L) | all year | D059 |
| Potassium, total [as K] | monthly maximum | report only (mg/L) | all year | D059 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | D059 |
| Chloride [as Cl] | daily maximum | ≤ 529 mg/L | all year | D059 |
| Sulfate, total [as SO4] | monthly maximum | report only (mg/L) | all year | D059 |
| Coliform, fecal MPN + membrane ftl 44.5 C | monthly geometric mean | ≤ 200 #/100mL | May–Oct | D059 |
| Coliform, fecal MPN + membrane ftl 44.5 C | daily maximum | ≤ 400 #/100mL | all year | D059 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | D059 |
| Flow, in conduit or thru treatment plant | monthly maximum | report only (MGD) | all year | D059 |
| Flow, in conduit or thru treatment plant | monthly total | report only (Mgal/mo) | all year | D059 |
| Solids, total dissolved | monthly maximum | report only (mg/L) | all year | D059 |
| Mercury, dissolved [as Hg] | monthly maximum | report only (ng/L) | all year | D059 |
| Mercury, total [as Hg] | monthly maximum | report only (ng/L) | all year | D059 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | D059 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 40 mg/L | all year | D059 |
| Specific conductance | monthly maximum | report only (umho/cm) | all year | D060 |
| Oxygen, dissolved [DO] | monthly minimum | ≥ 5 mg/L | all year | D060 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | D060 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | D060 |
| pH | monthly minimum | ≥ 6 SU | all year | D060 |
| pH | monthly maximum | ≤ 9 SU | all year | D060 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | D060 |
| Solids, total suspended | monthly maximum | report only (mg/L) | May, Sep | D060 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | all year | D060 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | Mar, Jun, Sep, Dec | D060 |
| Oil and grease, hexane extr method | monthly maximum | report only (mg/L) | Mar, Jun, Sep, Dec | D060 |
| Nitrogen, total [as N] | monthly average | ≤ 134 mg/L | all year | D060 |
| Nitrogen, total [as N] | daily maximum | ≤ 194 mg/L | all year | D060 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4 mg/L | all year | D060 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 8 mg/L | all year | D060 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | D060 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | D060 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | D060 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | D060 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | D060 |
| Calcium, total [as Ca] | monthly maximum | report only (mg/L) | all year | D060 |
| Magnesium, total [as Mg] | monthly maximum | report only (mg/L) | all year | D060 |
| Sodium, total [as Na] | monthly maximum | report only (mg/L) | all year | D060 |
| Potassium, total [as K] | monthly maximum | report only (mg/L) | all year | D060 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | D060 |
| Chloride [as Cl] | daily maximum | ≤ 529 mg/L | all year | D060 |
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | monthly maximum | report only (mg/L) | all year | D060 |
| Coliform, fecal MPN + membrane ftl 44.5 C | monthly geometric mean | ≤ 200 #/100mL | May–Oct | D060 |
| Coliform, fecal MPN + membrane ftl 44.5 C | daily maximum | ≤ 400 #/100mL | all year | D060 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | D060 |
| Flow, in conduit or thru treatment plant | monthly maximum | report only (MGD) | all year | D060 |
| Flow, in conduit or thru treatment plant | monthly total | report only (Mgal/mo) | all year | D060 |
| Chlorine, total residual | daily maximum | ≤ .038 mg/L | May–Oct | D060 |
| Solids, total dissolved | monthly average | report only (mg/L) | all year | D060 |
| Mercury, dissolved [as Hg] | monthly maximum | report only (ng/L) | May, Sep | D060 |
| Mercury, total [as Hg] | monthly maximum | report only (ng/L) | May, Sep | D060 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | D060 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 40 mg/L | all year | D060 |
| BOD, carb-5 day, 20 deg C, percent removal | monthly average minimum | ≥ 85 % | all year | D060 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | D060 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 518 kg/d | all year | D062 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 1037 kg/d | all year | D062 |
| Solids, total suspended | monthly average | ≤ 251 kg/d | all year | D062 |
| Solids, total suspended | maximum weekly average | ≤ 376 kg/d | all year | D062 |
| Oil and grease, hexane extr method | monthly average | ≤ 197 kg/d | Mar, Jun, Sep, Dec | D062 |
| Oil and grease, hexane extr method | daily maximum | ≤ 395 kg/d | Mar, Jun, Sep, Dec | D062 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 45 kg/d | Oct, Nov | D062 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 69 kg/d | Jun–Sep | D062 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 66 kg/d | Apr, May | D062 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 55 kg/d | Jan, Feb, Mar, Dec | D062 |
| Phosphorus, total [as P] | annual total | ≤ 2984 kg/yr | all year | D062 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 209 kg/d | all year | D062 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 334 kg/d | all year | D062 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | S064 |
| pH | monthly minimum | report only (SU) | all year | S064 |
| pH | monthly maximum | report only (SU) | all year | S064 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | S064 |
| Solids, total suspended | monthly maximum | report only (mg/L) | all year | S064 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | S064 |
| Nitrogen, total [as N] | monthly maximum | report only (mg/L) | all year | S064 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | S064 |
| Nitrogen, Kjeldahl, total [as N] | monthly maximum | report only (mg/L) | all year | S064 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | S064 |
| Nitrite + Nitrate total [as N] | monthly maximum | report only (mg/L) | all year | S064 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | S064 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | S064 |
| Flow, in conduit or thru treatment plant | monthly maximum | report only (MGD) | all year | S064 |
| Flow, in conduit or thru treatment plant | monthly total | report only (Mgal/mo) | all year | S064 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | S064 |
| BOD, carbonaceous [5 day, 20 C] | monthly maximum | report only (mg/L) | all year | S064 |
Cited limits by parameter: Minnesota's rules and the federal ones.
Same industry: the 28 Food and Kindred Products permits in Minnesota.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MN0031178 · MCP: https://passage-data.com/mcp