WESCO OPERATING INC OIL AND GAS OPERATION

NPDES permit WY0000221 · Minor NON-POTW · administratively continued, expires 2022-10-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2022-10-31 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

EPA's file shows no filings for this permit in this window. That is a statement about the file, not about the facility.

Reporting

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

Limits in force (10)

OutfallParameterStatisticLimitMonths
001Specific conductanceDAILY MX report only all year
001Sulfate [as S]DAILY MX report only all year
001pHMINIMUM report only all year
001pHMAXIMUM report only all year
001Oil & GreaseDAILY MX report only all year
001Chloride [as Cl]DAILY MX report only all year
001Radium 226, totalDAILY MX report only all year
001Sulfide-hydrogen sulfide [undissociated]DAILY MX report only all year
001Solids, total dissolvedDAILY MX report only all year
001Flow, totalDAILY MX 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