Phillips 66 Company-Ponca City Refinery

NPDES permit OK0000256 · Major NON-POTW · effective, expires 2031-01-31 · 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.

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

3values over a limit
0required values missing, on 0 form(s)
0of 45 forms filed late

Last period with anything received: 2026-07-31. Most often over: Sulfide, total [as S] (2), Oil and grease, hexane extr method (1).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among OK permits in EPA's filings — check your permit).

Limits in force (88)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 26.3 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 39.5 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 1054 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 1581 lb/d all year
001Oxygen demand, chem. [high level] [COD]MO AVG <= 279 mg/L all year
001Oxygen demand, chem. [high level] [COD]DAILY MX <= 539 mg/L all year
001Oxygen demand, chem. [high level] [COD]MO AVG <= 10337 lb/d all year
001Oxygen demand, chem. [high level] [COD]DAILY MX <= 19947 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 32 mg/L all year
001Solids, total suspendedDAILY MX <= 50.2 mg/L all year
001Solids, total suspendedMO AVG <= 1186 lb/d all year
001Solids, total suspendedDAILY MX <= 1860 lb/d all year
001Oil and grease, hexane extr methodMO AVG <= 11.7 mg/L all year
001Oil and grease, hexane extr methodDAILY MX <= 21.9 mg/L all year
001Oil and grease, hexane extr methodMO AVG <= 432 lb/d all year
001Oil and grease, hexane extr methodDAILY MX <= 811 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 13.2 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 19.8 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 529 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 794 lb/d all year
001Sulfide, total [as S]MO AVG <= .2 mg/L all year
001Sulfide, total [as S]DAILY MX <= .46 mg/L all year
001Sulfide, total [as S]MO AVG <= 7.53 lb/d all year
001Sulfide, total [as S]DAILY MX <= 16.89 lb/d all year
001Selenium, total [as Se]MO AVG <= 70.7 mg/L all year
001Selenium, total [as Se]DAILY MX <= 97.8 mg/L all year
001Selenium, total [as Se]MO AVG <= 2.62 lb/d all year
001Selenium, total [as Se]DAILY MX <= 3.42 lb/d all year
001Phenolics, total recoverableMO AVG <= .26 mg/L all year
001Phenolics, total recoverableDAILY MX <= .54 mg/L all year
001Phenolics, total recoverableMO AVG <= 9.69 lb/d all year
001Phenolics, total recoverableDAILY MX <= 19.92 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Solids, total dissolved- 180 deg. CMO AVG report only all year
001Solids, total dissolved- 180 deg. CDAILY MX report only all year
002Oxygen demand, chem. [high level] [COD]DAILY AV report only all year
002Oxygen demand, chem. [high level] [COD]DAILY MX <= 120 mg/L all year
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY AV report only all year
002Solids, total suspendedDAILY MX report only all year
002Oil and grease, hexane extr methodDAILY AV report only all year
002Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
003Oxygen demand, chem. [high level] [COD]DAILY AV report only all year
003Oxygen demand, chem. [high level] [COD]DAILY MX <= 95 mg/L all year
003pHMINIMUM >= 6.5 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedDAILY AV report only all year
003Solids, total suspendedDAILY MX report only all year
003Oil and grease, hexane extr methodDAILY AV report only all year
003Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
003Copper, total [as Cu]MO AVG report only all year
003Copper, total [as Cu]DAILY MX report only all year
003Lead, total [as Pb]MO AVG report only all year
003Lead, total [as Pb]DAILY MX report only all year
003Selenium, total [as Se]MO AVG report only all year
003Selenium, total [as Se]DAILY MX report only all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
TX1pHDAILY MN report only all year
TX1pHDAILY MN report only all year
TX1pHDAILY MX report only all year
TX1pHDAILY MX report only all year
TX1Nitrogen, ammonia total [as N]DAILY MN report only all year
TX1Nitrogen, ammonia total [as N]DAILY MN report only all year
TX1Nitrogen, ammonia total [as N]MO AVG report only all year
TX1Nitrogen, ammonia total [as N]DAILY MX report only all year
TX1Nitrogen, ammonia total [as N]DAILY MX report only all year
TX1Whole effluent toxicity - retest #148HR MIN report only all year
TX1Whole effluent toxicity - retest #248HR MIN report only all year
TX1Whole Effluent Toxicity [WET] - D. magna48HR MIN >= 100 % all year
TX1Solids, total dissolved- 180 deg. CDAILY MN report only all year
TX1Solids, total dissolved- 180 deg. CMO AVG report only all year
TX1Solids, total dissolved- 180 deg. CDAILY MX report only all year
TX1LC50 Static Renewal 48Hr Acute Daphnia magna48HR MIN report only all year
TX1LC50 Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1LC50 Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1LF Pass/Fail Static Renewal 48Hr Acute Daphnia magna48HR MIN report only all year
TX1LC50 Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1LC50 Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1Daphnia Magna % Mortality 48 Hr Acute48HR MIN report only all year
TX1% Mortality Static Renewal 48 Hr Pimephales promelas or use TJA6C48HR MIN report only all year
TX1% Mortality Static Renewal 48 Hr Pimephales promelas or use TJA6C48HR MIN 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