Pacificorp

NPDES permit WY0003115 · Major NON-POTW · administratively continued, expires 2019-11-30 · 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 2019-11-30 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 54 forms filed late

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

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 (37)

OutfallParameterStatisticLimitMonths
007pHINST MIN >= 6.5 SU all year
007pHINST MAX <= 9 SU all year
007Solids, total suspendedMO AVG <= 30 mg/L all year
007Solids, total suspendedDAILY MX <= 100 mg/L all year
007Selenium, total recoverableDAILY MX <= 12 ug/L all year
007Copper, total [as Cu]DAILY MX <= 1 mg/L all year
007Iron, total [as Fe]DAILY MX <= 1 mg/L all year
007FlowMO AVG report only all year
007FlowDAILY MX report only all year
007Produced water, oil and greaseDAILY MX <= 10 mg/L all year
008pHINST MIN >= 6.5 SU all year
008pHINST MAX <= 9 SU all year
008Solids, total suspendedMO AVG <= 30 mg/L all year
008Solids, total suspendedDAILY MX <= 100 mg/L all year
008Selenium, total recoverableDAILY MX <= 12 ug/L all year
008Copper, total [as Cu]DAILY MX <= 1 mg/L all year
008Iron, total [as Fe]DAILY MX <= 1 mg/L all year
008FlowMO AVG report only all year
008FlowDAILY MX report only all year
008Produced water, oil and greaseDAILY MX <= 10 mg/L all year
011pHINST MIN report only all year
011pHINST MAX report only all year
011Solids, total suspendedDAILY MX report only all year
011FlowMO AVG report only all year
011FlowDAILY MX report only all year
011Produced water, oil and greaseDAILY MX report only all year
022Temperature, water deg. centigradeDAILY MX report only all year
022Oxidants, total residualDAILY MN report only all year
022Oxidants, total residualMO AVG report only all year
022Oxidants, total residualDAILY MX <= .05 mg/L all year
022Oxidants, total residualDAILY MX <= 1.84 kg/d all year
022FlowMO AVG report only all year
022FlowDAILY MX report only all year
SUMQPass/Fail Static 48Hr Acute Ceriodaphnia dubia4C = 0 pass=0;fail=1 all year
SUMQPass/Fail Static 96 Hr Acute Pimephales Promelas9D = 0 pass=0;fail=1 all year
SUMWFlowMO AVG <= 13.84 MGD all year
SUMWFlowDAILY 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