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Air Transportation, Scheduled, Minneapolis, Minnesota. NPDES permit MN0054194, in force until Mar 31, 2029. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | daily maximum | ≤ 86 deg F | Apr–Nov | D004 |
| pH | instantaneous minimum | ≥ 6 SU | Apr–Nov | D004 |
| pH | instantaneous maximum | ≤ 9 SU | Apr–Nov | D004 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | Apr–Nov | D004 |
| Solids, total suspended | daily maximum | report only (kg/d) | Apr–Nov | D004 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | Apr–Nov | D004 |
| Flow, in conduit or thru treatment plant | monthly total | report only (Mgal/mo) | Apr–Nov | D004 |
| Chlorine, total residual | daily maximum | ≤ .038 mg/L | Apr–Nov | D004 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 86 deg F | Apr–Nov | D005 |
| pH | instantaneous minimum | ≥ 6 SU | Apr–Nov | D005 |
| pH | instantaneous maximum | ≤ 9 SU | Apr–Nov | D005 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | Apr–Nov | D005 |
| Solids, total suspended | daily maximum | report only (kg/d) | Apr–Nov | D005 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | Apr–Nov | D005 |
| Flow, in conduit or thru treatment plant | monthly total | report only (Mgal/mo) | Apr–Nov | D005 |
| Chlorine, total residual | daily maximum | ≤ .038 mg/L | Apr–Nov | D005 |
| Solids, total suspended | daily maximum | ≤ 3.25 kg/d | Apr–Nov | D007 |
Cited limits by parameter: Minnesota's rules and the federal ones.
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