Passage Data · Check a report · Use it from your AI
Industrial Inorganic Chemicals, major discharger, Ludington, Michigan. NPDES permit MI0003026 expired Oct 1, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly average | report only (deg F) | all year |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year |
| pH | daily minimum | ≥ 6.5 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 12 mg/L | May–Oct |
| Solids, total suspended | monthly average | ≤ 14 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Solids, total suspended | daily maximum | ≤ 22 mg/L | May–Oct |
| Solids, total suspended | daily maximum | ≤ 28 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Solids, total suspended | monthly average | ≤ 3800 lb/qtr | May–Oct |
| Solids, total suspended | monthly average | ≤ 3800 lb/qtr | Jan, Feb, Mar, Apr, Nov, Dec |
| Solids, total suspended | daily maximum | ≤ 6300 lb/qtr | May–Oct |
| Solids, total suspended | daily maximum | ≤ 6300 lb/qtr | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10.8 mg/L | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.9 mg/L | May–Sep |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 17.2 mg/L | Jan, Feb, Mar, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10 mg/L | Oct, Nov |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | May–Sep |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Oct, Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3600 lb/qtr | Apr |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1600 lb/qtr | May–Sep |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 5700 lb/qtr | Jan, Feb, Mar, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3300 lb/qtr | Oct, Nov |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/qtr) | Apr |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/qtr) | May–Sep |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/qtr) | Jan, Feb, Mar, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | report only (lb/qtr) | Oct, Nov |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year |
| Chloride [as Cl] | monthly average | report only (mg/L) | all year |
| Chloride [as Cl] | daily maximum | report only (mg/L) | all year |
| Chloride [as Cl] | monthly average | ≤ 75000 lb/qtr | all year |
| Chloride [as Cl] | daily maximum | ≤ 150000 lb/qtr | all year |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| Solids, total dissolved | monthly average | report only (mg/L) | all year |
| Solids, total dissolved | daily maximum | report only (mg/L) | all year |
| Solids, total dissolved | monthly average | ≤ 485000 lb/qtr | all year |
| Solids, total dissolved | daily maximum | ≤ 970000 lb/qtr | all year |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year |
| Mercury, total [as Hg] | monthly average | report only (lb/qtr) | all year |
| Mercury, total [as Hg] | daily maximum | report only (lb/qtr) | all year |
| Outfall observation,visual, y/n response | value | report only (N=0;Y=1) | all year |
Cited limits by parameter: Michigan's rules and the federal ones.
Same industry: the 13 Chemicals and Allied Products permits in Michigan.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/MI0003026 · MCP: https://passage-data.com/mcp