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Mobile Home Site Operators, Flat Rock, Michigan. NPDES permit MI0029122 expired Oct 1, 2026; its limits still apply. Last 12 months: over a limit 40 times (last August 2026), 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | BOD, carbonaceous [5 day, 20 C], 7-day average | 3.92 | ≤ 2.1 lb/d | 87% |
| November 2025 | BOD, carbonaceous [5 day, 20 C], daily maximum | 43 | ≤ 10 mg/L | 330% |
| November 2025 | BOD, carbonaceous [5 day, 20 C], monthly average | 1.19 | ≤ .8 lb/d | 49% |
| November 2025 | BOD, carbonaceous [5 day, 20 C], monthly average | 15.6 | ≤ 4 mg/L | 290% |
| November 2025 | Coliform, fecal general, 7-day geometric mean | 447 | ≤ 400 #/100mL | 12% |
| November 2025 | Nitrogen, ammonia total [as N], 7-day average | 1.389 | ≤ .4 lb/d | 247% |
| November 2025 | Nitrogen, ammonia total [as N], daily maximum | 38.7 | ≤ 2 mg/L | 1835% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | .449 | ≤ .1 lb/d | 349% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | 6.84 | ≤ .5 mg/L | 1268% |
| December 2025 | BOD, carbonaceous [5 day, 20 C], daily maximum | 41 | ≤ 31 mg/L | 32% |
| December 2025 | BOD, carbonaceous [5 day, 20 C], monthly average | 22.7 | ≤ 21 mg/L | 8% |
| December 2025 | Nitrogen, ammonia total [as N], daily maximum | 16.1 | ≤ 10 mg/L | 61% |
| January 2026 | Oxygen, dissolved [DO], daily minimum | 5.9 | ≥ 6 mg/L | 2% |
| May 2026 | BOD, carbonaceous [5 day, 20 C], 7-day average | 2.38 | ≤ 2.1 lb/d | 13% |
| May 2026 | BOD, carbonaceous [5 day, 20 C], daily maximum | 30.4 | ≤ 10 mg/L | 204% |
| May 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 1.52 | ≤ .8 lb/d | 90% |
| May 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 16 | ≤ 4 mg/L | 300% |
| May 2026 | Coliform, fecal general, monthly geometric mean | 210 | ≤ 200 #/100mL | 5% |
| May 2026 | Nitrogen, ammonia total [as N], daily maximum | 4.1 | ≤ 2 mg/L | 105% |
| May 2026 | Nitrogen, ammonia total [as N], monthly average | .314 | ≤ .1 lb/d | 214% |
| May 2026 | Nitrogen, ammonia total [as N], monthly average | 3.28 | ≤ .5 mg/L | 556% |
| June 2026 | BOD, carbonaceous [5 day, 20 C], daily maximum | 27.6 | ≤ 10 mg/L | 176% |
| June 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 1.02 | ≤ .8 lb/d | 28% |
| June 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 14.2 | ≤ 4 mg/L | 255% |
| June 2026 | Nitrogen, ammonia total [as N], daily maximum | 5.02 | ≤ 2 mg/L | 151% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | .232 | ≤ .1 lb/d | 132% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 3.12 | ≤ .5 mg/L | 524% |
| July 2026 | BOD, carbonaceous [5 day, 20 C], daily maximum | 15.1 | ≤ 10 mg/L | 51% |
| July 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 1.05 | ≤ .8 lb/d | 31% |
| July 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 11.9 | ≤ 4 mg/L | 198% |
| July 2026 | Nitrogen, ammonia total [as N], daily maximum | 3.18 | ≤ 2 mg/L | 59% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | .214 | ≤ .1 lb/d | 114% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | 2.28 | ≤ .5 mg/L | 356% |
| August 2026 | BOD, carbonaceous [5 day, 20 C], 7-day average | 2.27 | ≤ 2.1 lb/d | 8% |
| August 2026 | BOD, carbonaceous [5 day, 20 C], daily maximum | 30.4 | ≤ 10 mg/L | 204% |
| August 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 1.73 | ≤ .8 lb/d | 116% |
| August 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 16.6 | ≤ 4 mg/L | 315% |
| August 2026 | Nitrogen, ammonia total [as N], daily maximum | 3.24 | ≤ 2 mg/L | 62% |
| August 2026 | Nitrogen, ammonia total [as N], monthly average | .272 | ≤ .1 lb/d | 172% |
| August 2026 | Nitrogen, ammonia total [as N], monthly average | 2.61 | ≤ .5 mg/L | 422% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 4 mg/L | Apr | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 6 mg/L | Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 20 mg/L | May–Nov | 001 |
| Solids, total suspended | 7-day average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | 7-day average | ≤ 30 mg/L | May–Nov | 001 |
| Solids, total suspended | monthly average | ≤ 6.3 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 4.2 lb/d | May–Nov | 001 |
| Solids, total suspended | 7-day average | ≤ 9.4 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Solids, total suspended | 7-day average | ≤ 6.3 lb/d | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .5 mg/L | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | = 2.9 mg/L | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 7.2 mg/L | Apr | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2 mg/L | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10 mg/L | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Apr | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .1 lb/d | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | = .6 lb/d | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.5 lb/d | Apr | 001 |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ .4 lb/d | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | 7-day average | ≤ 2.1 lb/d | Jan, Feb, Mar, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/d) | Apr | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | ≤ .21 lb/d | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | all year | 001 |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year | 001 |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | monthly average | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | 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 |
| Coliform, fecal general | monthly geometric mean | ≤ 200 #/100mL | all year | 001 |
| Coliform, fecal general | 7-day geometric mean | ≤ 400 #/100mL | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 23 mg/L | Apr | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 21 mg/L | Jan, Feb, Mar, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 4 mg/L | May–Nov | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 34 mg/L | Apr | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 31 mg/L | Jan, Feb, Mar, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 10 mg/L | May–Nov | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 4.8 lb/d | Apr | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 4.4 lb/d | Jan, Feb, Mar, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ .8 lb/d | May–Nov | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 7.1 lb/d | Apr | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 6.4 lb/d | Jan, Feb, Mar, Dec | 001 |
| BOD, carbonaceous [5 day, 20 C] | 7-day average | ≤ 2.1 lb/d | May–Nov | 001 |
| Solids, total | monthly minimum | report only (%) | all year | SLD |
| Solids, total | monthly average | report only (%) | all year | SLD |
| Solids, total | monthly maximum | report only (%) | all year | SLD |
| Arsenic, dry weight | monthly minimum | report only (mg/kg) | all year | SLD |
| Arsenic, dry weight | monthly average | report only (mg/kg) | all year | SLD |
| Arsenic, dry weight | monthly maximum | ≤ 75 mg/kg | all year | SLD |
| Selenium, dry weight | monthly minimum | report only (mg/kg) | all year | SLD |
| Selenium, dry weight | monthly average | report only (mg/kg) | all year | SLD |
| Selenium, dry weight | monthly maximum | ≤ 100 mg/kg | all year | SLD |
| Copper, dry weight | monthly minimum | report only (mg/kg) | all year | SLD |
| Copper, dry weight | monthly average | report only (mg/kg) | all year | SLD |
| Copper, dry weight | monthly maximum | ≤ 4300 mg/kg | all year | SLD |
| Cadmium, dry weight | monthly minimum | report only (mg/kg) | all year | SLD |
| Cadmium, dry weight | monthly average | report only (mg/kg) | all year | SLD |
| Cadmium, dry weight | monthly maximum | ≤ 85 mg/kg | all year | SLD |
| Nitrogen, total Kjeldahl | monthly minimum | report only (mg/kg) | all year | SLD |
| Nitrogen, total Kjeldahl | monthly average | report only (mg/kg) | all year | SLD |
| Nitrogen, total Kjeldahl | monthly maximum | report only (mg/kg) | all year | SLD |
| Molybdenum, sludge, total, dry weight [as Mo] | monthly minimum | report only (mg/kg) | all year | SLD |
| Molybdenum, sludge, total, dry weight [as Mo] | monthly average | report only (mg/kg) | all year | SLD |
| Molybdenum, sludge, total, dry weight [as Mo] | monthly maximum | ≤ 75 mg/kg | all year | SLD |
| Zinc, sludge, total, dry weight [as Zn] | monthly minimum | report only (mg/kg) | all year | SLD |
| Zinc, sludge, total, dry weight [as Zn] | monthly average | report only (mg/kg) | all year | SLD |
| Zinc, sludge, total, dry weight [as Zn] | monthly maximum | ≤ 7500 mg/kg | all year | SLD |
| Lead, sludge, total, dry weight [as Pb] | monthly minimum | report only (mg/kg) | all year | SLD |
| Lead, sludge, total, dry weight [as Pb] | monthly average | report only (mg/kg) | all year | SLD |
| Lead, sludge, total, dry weight [as Pb] | monthly maximum | ≤ 840 mg/kg | all year | SLD |
| Nickel, sludge, total, dry weight [as Ni] | monthly minimum | report only (mg/kg) | all year | SLD |
| Nickel, sludge, total, dry weight [as Ni] | monthly average | report only (mg/kg) | all year | SLD |
| Nickel, sludge, total, dry weight [as Ni] | monthly maximum | ≤ 420 mg/kg | all year | SLD |
| Nitrogen, sludge, total, dry weight [as N] | monthly minimum | report only (mg/kg) | all year | SLD |
| Nitrogen, sludge, total, dry weight [as N] | monthly average | report only (mg/kg) | all year | SLD |
| Nitrogen, sludge, total, dry weight [as N] | monthly maximum | report only (mg/kg) | all year | SLD |
| Mercury, sludge, total, dry weight [as Hg] | monthly minimum | report only (mg/kg) | all year | SLD |
| Mercury, sludge, total, dry weight [as Hg] | monthly average | report only (mg/kg) | all year | SLD |
| Mercury, sludge, total, dry weight [as Hg] | monthly maximum | ≤ 57 mg/kg | all year | SLD |
| Potassium, sludge, total, dry weight [as K] | monthly minimum | report only (mg/kg) | all year | SLD |
| Potassium, sludge, total, dry weight [as K] | monthly average | report only (mg/kg) | all year | SLD |
| Potassium, sludge, total, dry weight [as K] | monthly maximum | report only (mg/kg) | all year | SLD |
| Phosphorus, sludge, total, dry weight [as P] | monthly minimum | report only (mg/kg) | all year | SLD |
| Phosphorus, sludge, total, dry weight [as P] | monthly average | report only (mg/kg) | all year | SLD |
| Phosphorus, sludge, total, dry weight [as P] | monthly maximum | report only (mg/kg) | all year | SLD |
Cited limits by parameter: Michigan's rules and the federal ones.
Same industry: the 18 Real Estate permits in Michigan.
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Your permit document is the final word. As JSON: /api/v1/permits/MI0029122 · MCP: https://passage-data.com/mcp