Clean Water Act discharge permit · NPDES MI0048721

STONECO INC-DENNISTON, Monroe, MI: NPDES MI0048721 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

STONECO INC-DENNISTON, held by Michigan Paving and Materials, holds NPDES permit MI0048721. EPA’s file records it issued February 19, 2016 and expiring October 1, 2019.

STONECO INC-DENNISTON, Monroe, Michigan: Individual permit MI0048721, held by Michigan Paving and Materials; Administratively continued (past its expiration date and still in force until reissued); issued February 19, 2016, term to October 1, 2019, by State.

September 2, 2025: Monitoring Violations - Improper Analysis or Lab Error (ST6).
February 21, 2023: Reporting Violations - Late Submittal of DMRs (ST6).

STONECO INC-DENNISTON among its neighbors

EPA’s permit file holds 10 discharge permits in the La Plaisance Creek-Frontal Lake Erie subwatershed (HUC 041000010202), MI0048721 among them. Its county holds 34, 4 of them major permits; MI0048721 is a minor permit.

Other permits in the La Plaisance Creek-Frontal Lake Erie subwatershed (HUC 041000010202)

CHECKER MARINE SERVICE INC, La Salle: MIS410616, minor permit, discharging to Sulphur Creek, permit term to April 1, 2024
DYNAMIC TRANSPORTATION LLC, Luna Pier: MIS211208, minor permit, permit term to April 1, 2027
HARBOR MARINE-MONROE, Monroe: MIS211109, minor permit, permit term to April 1, 2022
LUNA PIER TRUCK DEPOT, Luna Pier: MI0060331, minor permit, discharging to Martin and Cousino Drain, permit term to October 1, 2027
LUNA PIER WWTP, Luna Pier: MI0058821, minor permit, discharging to Lake Erie, permit term to October 1, 2021
MASON CONSOLIDATED SCHOOLS WWTP, Erie: MI0047201, minor permit, discharging to S.S. LaPointe Drain, permit term to October 1, 2023
SHM TOLEDO BEACH, LLC, La Salle: MIG760001, minor permit, discharging to Lake Erie, permit term to April 1, 2020
SHM TOLEDO BEACH, LLC, La Salle: MIS220064, minor permit, discharging to Lake Erie, permit term to April 1, 2022
TROUTS YACHT BASIN-MONROE, Monroe: MIS510374, minor permit, discharging to Lake Erie, permit term to April 1, 2025

Identity

Facility as filed	STONECO INC-DENNISTON
Permittee as filed	Michigan Paving and Materials
NPDES ID	MI0048721
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	February 19, 2016
Expiration date	October 1, 2019
Issuing agency	State
Address	Monroe, MI 48161
Subwatershed	La Plaisance Creek-Frontal Lake Erie (HUC 041000010202)

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES MI0048721.

Inspections, violations and enforcement

2Single-event violations

Date	What EPA recorded	Agency
September 2, 2025	Monitoring Violations - Improper Analysis or Lab Error	ST6
February 21, 2023	Reporting Violations - Late Submittal of DMRs	ST6

Inspections

EPA’s inspection file holds no inspection for NPDES MI0048721.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES MI0048721.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MI0048721.

Start the watch

How we handle your data → Privacy

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This public-records page covers NPDES permit MI0048721 for STONECO INC-DENNISTON in Monroe, MI, held by Michigan Paving and Materials, with a status of administratively continued and a minor discharger class. The facts list 0 pollutants on file, 0 under a numeric limit, 0 with a violation of any kind, and 0 with an effluent exceedance, within the La Plaisance Creek-Frontal Lake Erie watershed (HUC 041000010202).