PACIFICORP - COTTONWOOD/WILBERG MINE

NPDES permit UT0022896 · Minor NON-POTW · effective, expires 2029-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

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

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

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (14)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only all year
001Flow rateMX MO AV <= .54 MGD all year
001pHDAILY MN >= 6.5 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedMX MO AV <= 20 mg/L all year
001Solids, total suspendedMX WK AV <= 30 mg/L all year
001Iron, total [as Fe]DAILY MX <= 1 mg/L all year
001Oil and greaseDAILY MX <= 10 mg/L all year
001Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
001Sanitary waste discharged-assessmntDAILY MX <= 0 N=0;Y=1 all year
001Solids, total dissolvedMX MO AV <= 1136 mg/L all year
001Solids, total dissolvedDAILY MX report only all year
001Solids, total dissolvedDAILY MX <= 2000 lb/d all year
001Oil and grease visualINST MAX <= 0 N=0;Y=1 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