Par Montana, LLC.

NPDES permit MT0028321 · Minor NON-POTW · administratively continued, expires 2026-01-31 · 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 2026-01-31 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
0required values missing, on 0 form(s)
0of 3 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MT permits in EPA's filings — check your permit).

Limits in force (13)

OutfallParameterStatisticLimitMonths
001Flow rateMO AVG report only Jul, Aug, Sep, Oct
001Flow rateDAILY MX report only Jul, Aug, Sep, Oct
001TurbidityMO AVG report only Jul, Aug, Sep, Oct
001TurbidityDAILY MX report only Jul, Aug, Sep, Oct
001TurbidityMO AVG report only (alert) Jul, Aug, Sep, Oct
001TurbidityDAILY MX <= 100 NTU (alert) Jul, Aug, Sep, Oct
001TurbidityMO AVG report only Jul, Aug, Sep, Oct
001TurbidityDAILY MX report only Jul, Aug, Sep, Oct
001pHMINIMUM >= 6 SU Jul, Aug, Sep, Oct
001pHMAXIMUM <= 9 SU Jul, Aug, Sep, Oct
001Oil & GreaseMO AVG report only Jul, Aug, Sep, Oct
001Oil & GreaseDAILY MX <= 10 mg/L Jul, Aug, Sep, Oct
001Oil and grease visualVALUE report only Jul, Aug, Sep, Oct

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