MAHLE Engine Components USA, Inc.

NPDES permit MI0004057 · Minor NON-POTW · administratively continued, expires 2023-10-01 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2023-10-01 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
18required values missing, on 9 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 21 days after each monitoring period ends (the most common figure among MI permits in EPA's filings — check your permit).

Limits in force (23)

OutfallParameterStatisticLimitMonths
001Chromium, hexavalent [as Cr]MO AVG = 11 ug/L all year
001Chromium, hexavalent [as Cr]DAILY MX = 32 ug/L all year
001TetrachloroethyleneDAILY MX = 5 ug/L all year
001TetrachloroethyleneDAILY MX report only all year
0011,1-DichloroethaneDAILY MX = 5 ug/L all year
0011,1-DichloroethaneDAILY MX report only all year
001trans-1,2-DichloroethyleneDAILY MX = 5 ug/L all year
001trans-1,2-DichloroethyleneDAILY MX report only all year
001Vinyl chlorideDAILY MX = 3 ug/L all year
001Vinyl chlorideDAILY MX report only all year
001TrichloroethyleneMO AVG report only all year
001TrichloroethyleneDAILY MX <= 3 ug/L all year
001TrichloroethyleneDAILY MX report only all year
001Equipment inspection - visualVALUE report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Xylene [mix of m+o+p]DAILY MX = 5 ug/L all year
001Xylene [mix of m+o+p]DAILY MX report only all year
0011,2-cis-DichloroethyleneDAILY MX = 5 ug/L all year
0011,2-cis-DichloroethyleneDAILY MX report only all year
001cis-1,2-DichloroetheneDAILY MX = 5 ug/L all year
001cis-1,2-DichloroetheneDAILY MX report only all year
001Outfall observation,visual, y/n responseVALUE report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states