Clean Water Act discharge permit · NPDES MI0043036
MASON MANOR MHP WWSL, Mason, MI: NPDES MI0043036 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 22Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
MASON MANOR MHP WWSL, held by FSI Mason Manor Property LLC, holds NPDES permit MI0043036, which discharges to Sycamore Creek. EPA’s file records it issued April 27, 2018 and expiring October 1, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MASON MANOR MHP WWSL |
|---|---|
| Permittee as filed | FSI Mason Manor Property LLC |
| NPDES ID | MI0043036 |
| 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 | April 27, 2018 |
| Expiration date | October 1, 2022 |
| Issuing agency | State |
| Address | Mason, MI 48854 |
| Receiving water | Sycamore Creek |
| Subwatershed | Headwaters Sycamore Creek (HUC 040500040506) |
| NAICS | 531190 – Lessors of Other Real Estate Property |
| SIC | 6515 – Mobile Home Site Operators |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 22Pollutants on file
- 22Under a numeric limit
- 22With a violation of any kind
- 2With 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 |
|---|---|---|---|---|---|
| Phosphorus, total [as P] | 2 | 45 | 8 | May 31, 2024 | 1,430% over the limit |
| Solids, total suspended | 4 | 24 | 2 | December 31, 2020 | 24% over the limit |
| pH | 2 | 80 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 74 | 0 | ||
| Coliform, fecal general | 2 | 74 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 72 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 36 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 36 | 0 | ||
| Solids, total | 3 | 6 | 0 | ||
| Arsenic, dry weight | 3 | 6 | 0 | ||
| Selenium, dry weight | 3 | 6 | 0 | ||
| Copper, dry weight | 3 | 6 | 0 | ||
| Cadmium, dry weight | 3 | 6 | 0 | ||
| Nitrogen, total Kjeldahl | 3 | 6 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 3 | 6 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 3 | 6 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 3 | 6 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 3 | 6 | 0 | ||
| Nitrogen, sludge, total, dry weight [as N] | 3 | 6 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 3 | 6 | 0 | ||
| Potassium, sludge, total, dry weight [as K] | 3 | 6 | 0 | ||
| Phosphorus, sludge, total, dry weight [as P] | 3 | 6 | 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
- 13Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 19, 2024 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| August 25, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| November 21, 2021 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2020 | Reporting Violations - Late Submittal of DMRs | ST6 |
| December 21, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| January 21, 2019 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 31, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| June 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| April 21, 2018 | Reporting Violations - Late Submittal of DMRs | ST6 |
| October 31, 2017 | Reporting Violations - Late Submittal of DMRs | ST6 |
| May 21, 2017 | Reporting Violations - Late Submittal of DMRs | 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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.