OKLAUNION POWER STATION LLC

NPDES permit TX0087815 · Major NON-POTW · effective, expires 2026-12-17 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 14 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among TX permits in EPA's filings — check your permit).

Limits in force (22)

OutfallParameterStatisticLimitMonths
001Oxygen demand, chem. [high level] [COD]DAILY MX <= 200 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY MX <= 50 mg/L all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Arsenic, total [as As]DAILY MX <= .3 mg/L all year
001Barium, total [as Ba]DAILY MX <= 4 mg/L all year
001Cadmium, total [as Cd]DAILY MX <= .00907 mg/L all year
001Chromium, total [as Cr]DAILY MX <= 5 mg/L all year
001Copper, total [as Cu]DAILY MX <= .426 mg/L all year
001Lead, total [as Pb]DAILY MX <= .311 mg/L all year
001Manganese, total [as Mn]DAILY MX <= 3 mg/L all year
001Nickel, total [as Ni]DAILY MX <= 1.937 mg/L all year
001Silver, total [as Ag]DAILY MX <= .0507 mg/L all year
001Zinc, total [as Zn]DAILY MX <= 4.7 mg/L all year
001Selenium, total [as Se]DAILY MX <= .0119 mg/L all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001E. coliDAILY AV report only all year
001E. coliDAILY MX report only all year
001Solids, total dissolvedDAILY MX <= 5000 mg/L all year
001Mercury, total [as Hg]DAILY MX <= .0031 mg/L 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