Cone Drive Operations Inc.

NPDES permit MI0056821 · Minor NON-POTW · effective, expires 2029-10-01 · EPA's file as of 2026-09-26

Keep this permit as a site — opens New site at EPA's facility point (44.754333, -85.619078); you set the radius.

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.

These are the last limits EPA's file holds for this permit, from an earlier version of it (version 4 in EPA's file): its current version carries none yet. Read your permit: a renewal can change them.

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

0values over a limit
0required values missing, on 0 form(s)
1of 10 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 21 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

How strict are these limits?

Each concentration limit against the same limit in comparable permits. Where it appears more than once, its strictest value.

2 other limits: fewer than 20 comparable permits.

Limits in force (18)

OutfallParameterStatisticLimitMonths
001pHdaily minimum >= 6.5 SU all year
001pHdaily maximum <= 9 SU all year
001Nitrogen, ammonia total [as N]daily maximum report only all year
001Ethylbenzenedaily maximum report only all year
001Naphthalenedaily maximum report only all year
001Ethylbenzenedaily maximum report only all year
001Hexachlorobutadienedaily maximum report only all year
001Equipment inspection - visualvalue report only all year
001Flow, in conduit or thru treatment plantmonthly average report only all year
001Flow, in conduit or thru treatment plantdaily maximum report only all year
0011,2,4-Trimethylbenzenedaily maximum <= 5 ug/L all year
0011,2,4-Trimethylbenzenedaily maximum report only all year
001Isopropylbenzenedaily maximum report only all year
001n-Propylbenzenedaily maximum report only all year
0011,3,5-Trimethylbenzenedaily maximum <= 5 ug/L all year
0011,3,5-Trimethylbenzenedaily maximum report only all year
001Xylene [mix of m+o+p]daily maximum 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