Clean Water Act discharge permit · NPDES MI0002437
US GYPSUM CO - TAWAS CITY, Tawas City, MI: NPDES MI0002437 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
US GYPSUM CO - TAWAS CITY, held by Matthew Craig, USG Alabaster, holds NPDES permit MI0002437, which discharges to Kelchner Drain. EPA’s file records it issued September 30, 2013 and expiring October 1, 2017. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | US GYPSUM CO - TAWAS CITY |
|---|---|
| Permittee as filed | Matthew Craig, USG Alabaster |
| NPDES ID | MI0002437 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 30, 2013 |
| Expiration date | October 1, 2017 |
| Issuing agency | State |
| Address | Tawas City, MI 48763 |
| Receiving water | Kelchner Drain |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Mason Creek-Frontal Lake Huron (HUC 040801010504) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 13Pollutants on file
- 10Under a numeric limit
- 13With a violation of any kind
- 3With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Hydrogen sulfide | 12 | 146 | 32 | April 30, 2023 | 1,150% over the limit |
| Sulfate, dissolved [as SO4] | 1 | 8 | 6 | September 30, 2024 | 1,900% over the limit |
| Sulfide, dissolved, [as S] | 0 | 40 | 2 | April 30, 2026 | 64% over the limit |
| pH | 2 | 117 | 0 | ||
| Solids, total suspended | 2 | 80 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 78 | 0 | ||
| Solids, total dissolved | 0 | 76 | 0 | ||
| Chloride [as Cl] | 1 | 55 | 0 | ||
| Outfall observation,visual, y/n response | 1 | 44 | 0 | ||
| Temperature, water deg. fahrenheit | 1 | 41 | 0 | ||
| Conductivity | 1 | 41 | 0 | ||
| Sulfate, total [as SO4] | 0 | 35 | 0 | ||
| Sulfate | 1 | 20 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 30, 2022 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| September 22, 2020 | Management Practice Violations - No Licensed/Certified Operator | ST6 |
| February 21, 2019 | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | ST6 |
| January 1, 2019 | Effluent Violations - Numeric effluent violation | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MI0002437 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.