E. I. du Pont de Nemours & Company

NPDES permit MI0000884 · Minor NON-POTW · administratively continued, expires 2018-10-01 · 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 2018-10-01 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

1values over a limit
0required values missing, on 0 form(s)
0of 12 forms filed late

Last period with anything received: 2026-08-31. Most often over: Trichloroethylene (1).

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 (28)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Chloride [as Cl]DAILY MX report only all year
001Chloride [as Cl]DAILY MX report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Carbon tetrachlorideDAILY MX <= 21 ug/L all year
001ChloroformDAILY MX <= 10 ug/L all year
001Methylene chlorideDAILY MX <= 59 ug/L all year
001TetrachloroethyleneDAILY MX <= 10 ug/L all year
001TrichlorofluoromethaneDAILY MX <= 40 ug/L all year
0011,1,1-TrichloroethaneDAILY MX <= 10 ug/L all year
001trans-1,2-DichloroethyleneDAILY MX <= 300 ug/L all year
001DichlorodifluoromethaneDAILY MX <= 50 ug/L all year
0011,1-Dichloro-2,2,2-trifluoroethaneDAILY MX report only all year
0011,1-Dichloro-1,2,2,2-tetrafluoroethaneDAILY MX report only all year
001TrichloroethyleneDAILY MX <= 10 ug/L all year
001ChlorodifluoromethaneDAILY MX <= 50 ug/L 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
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]MO AVG report only all year
001Mercury, total [as Hg]ROLL AVG <= 3 ng/L all year
001Mercury, total [as Hg]ROLL AVG <= .00003753 lb/d all year
0011,1,2-Trichloro-1,2,2-trifluoroethaneDAILY MX <= 33 ug/L 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