PACIFICORP - DEER CREEK MINE

NPDES permit UT0023604 · Minor NON-POTW · expired, expires 2025-01-31 · 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 2025-01-31 and is expired: 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 26 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 (35)

OutfallParameterStatisticLimitMonths
002Flow rate30DA AVG <= 5 MGD all year
002pHDAILY MN >= 6.5 SU all year
002pHDAILY MX <= 9 SU all year
002Solids, total suspended30DA AVG <= 15 mg/L all year
002Solids, total suspended7 DA AVG <= 25 mg/L all year
002Oil & GreaseDAILY MX <= 10 mg/L all year
002Iron, total [as Fe]DAILY MX <= 1 mg/L all year
002Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
002Sanitary waste discharged-assessmntDAILY MX <= 0 N=0;Y=1 all year
002Solids, total dissolvedDAILY MX <= 1200 mg/L all year
002Oil and grease visualINST MAX <= 0 N=0;Y=1 all year
003Flow rateDAILY MX <= .72 MGD all year
003Oxygen, dissolved [DO]MO AV MN >= 6.5 mg/L all year
003pHDAILY MN >= 6.5 SU all year
003pHDAILY MX <= 9 SU all year
003Solids, total suspended30DA AVG <= 25 mg/L all year
003Solids, total suspended7 DA AVG <= 35 mg/L all year
003Oil & GreaseDAILY MX <= 10 mg/L all year
003Arsenic, total [as As]DAILY MX report only all year
003Boron, total [as B]DAILY MX report only all year
003Cadmium, total [as Cd]DAILY MX report only all year
003Chromium, total [as Cr]DAILY MX report only all year
003Copper, total [as Cu]DAILY MX report only all year
003Iron, total [as Fe]30DA AVG <= 3.5 mg/L all year
003Iron, total [as Fe]DAILY MX <= 7 mg/L all year
003Lead, total [as Pb]DAILY MX report only all year
003Nickel, total [as Ni]DAILY MX report only all year
003Silver, total [as Ag]DAILY MX report only all year
003Zinc, total [as Zn]DAILY MX report only all year
003Selenium, total [as Se]DAILY MX report only all year
003Floating solids, waste or visible foam-visualDAILY MX <= 0 N=0;Y=1 all year
003Sanitary waste discharged-assessmntDAILY MX <= 0 N=0;Y=1 all year
003Solids, total dissolvedDAILY MX <= 1200 mg/L all year
003Mercury, total [as Hg]DAILY MX report only all year
003Oil 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