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Nonresidential Building Operators, Marston, Missouri. NPDES permit MO0098418, in force until Jul 31, 2027. Last 12 months: over a limit 2 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| January 2026 | Iron, total recoverable, monthly average | 1050 | ≤ 889 ug/L | 18% |
| April 2026 | Aluminum, total recoverable, monthly average | 336 | ≤ 242 ug/L | 39% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | weekly average | ≤ 65 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 45 mg/L | all year | 002 |
| pH | minimum | ≥ 6.5 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | weekly average | ≤ 110 mg/L | all year | 002 |
| Solids, total suspended | monthly average | ≤ 70 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 10.1 mg/L | Jan, Feb, Mar, Oct, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 12.1 mg/L | Apr–Sep | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2 mg/L | Jan, Feb, Mar, Oct, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.2 mg/L | Apr–Sep | 002 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 002 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 002 |
| Rainfall | daily maximum | report only (in) | all year | 002 |
| Application rate area sprayed | daily maximum | report only (acr) | all year | 002 |
| Application rate area sprayed | monthly average | report only (acr) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| E. coli | 7-day geometric mean | ≤ 1030 #/100mL | Apr–Oct | 002 |
| E. coli | 30-day geometric mean | ≤ 206 #/100mL | Apr–Oct | 002 |
| Application rate, gallons spray irrigation | daily maximum | report only (gal) | all year | 002 |
| Application rate, gallons spray irrigation | monthly average | report only (gal) | all year | 002 |
| Depth to water level ft below landsurface | daily maximum | report only (ft) | all year | 002 |
| Spray irrigation | daily maximum | report only (hr/d) | all year | 002 |
| Spray irrigation | monthly average | report only (hr/d) | all year | 002 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 65 % | all year | 002 |
| Solids, suspended percent removal | monthly average minimum | ≥ 65 % | all year | 002 |
| Spray irrigation, application rate | daily maximum | report only (in/d) | all year | 002 |
| Spray irrigation, application rate | monthly average | report only (in/d) | all year | 002 |
| Sulfate [as S] | daily maximum | report only (mg/L) | all year | 003 |
| Sulfate [as S] | monthly average | report only (mg/L) | all year | 003 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 003 |
| Oxygen demand, chem. [high level] [COD] | monthly average | report only (mg/L) | all year | 003 |
| pH | minimum | ≥ 6.5 SU | all year | 003 |
| pH | maximum | ≤ 9 SU | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 003 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 003 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 003 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | 003 |
| Solids, settleable | monthly average | report only (mL/L) | all year | 003 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | 003 |
| Solids, settleable | monthly average | report only (mL/L) | all year | 003 |
| Iron, total recoverable | daily maximum | ≤ 1408 ug/L | all year | 003 |
| Iron, total recoverable | monthly average | ≤ 889 ug/L | all year | 003 |
| Aluminum, total recoverable | daily maximum | ≤ 750 ug/L | all year | 003 |
| Aluminum, total recoverable | monthly average | ≤ 242 ug/L | all year | 003 |
| Chloride | daily maximum | ≤ 422 mg/L | all year | 003 |
| Chloride | monthly average | ≤ 164 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Chlorine, total residual | daily maximum | ≤ 18 ug/L | all year | 003 |
| Chlorine, total residual | monthly average | ≤ 9 ug/L | all year | 003 |
| Toxicity [acute], Ceriodaphnia dubia | daily maximum | report only (toxic) | all year | 003 |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | daily maximum | report only (toxic) | all year | 003 |
| Chlorides + Sulfates | daily maximum | report only (mg/L) | all year | 003 |
| Chlorides + Sulfates | monthly average | report only (mg/L) | all year | 003 |
| Outfall observation,visual, y/n response | daily minimum | report only (pass=0;fail=1) | all year | 003 |
| Outfall observation,visual, y/n response | monthly average minimum | report only (pass=0;fail=1) | all year | 003 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | all year | 005 |
| pH | minimum | ≥ 6.5 SU | all year | 005 |
| pH | maximum | ≤ 9 SU | all year | 005 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 005 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | 005 |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | all year | 005 |
| Storm water flow | daily maximum | report only (MGD) | all year | 005 |
| Storm water flow | monthly average | report only (MGD) | all year | 005 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | all year | INF |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | INF |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | INF |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | INF |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | INF |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | INF |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | INF |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | INF |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | INT |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INT |
| Solids, settleable | daily maximum | report only (mL/L) | all year | INT |
| Solids, settleable | monthly average | report only (mL/L) | all year | INT |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | INT |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | INT |
Cited limits by parameter: Missouri's rules and the federal ones.
Same industry: the 188 Real Estate permits in Missouri.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MO0098418 · MCP: https://passage-data.com/mcp