Greenfield Environmental Multistate Trust LLC-Cushing

NPDES permit OK0043320 · Minor NON-POTW · effective, expires 2031-07-31 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 51 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (76)

OutfallParameterStatisticLimitMonths
007Oxygen demand, chem. [high level] [COD]MO AVG <= 180 mg/L all year
007Oxygen demand, chem. [high level] [COD]DAILY MX <= 360 mg/L all year
007Oxygen demand, chem. [high level] [COD]MO AVG <= 135.11 lb/d all year
007Oxygen demand, chem. [high level] [COD]DAILY MX <= 270.22 lb/d all year
007pHMINIMUM >= 6.5 SU all year
007pHMAXIMUM <= 9 SU all year
007Solids, total suspendedMO AVG <= 30 mg/L all year
007Solids, total suspendedDAILY MX <= 45 mg/L all year
007Solids, total suspendedMO AVG <= 22.52 lb/d all year
007Solids, total suspendedDAILY MX <= 33.78 lb/d all year
007Oil and grease, hexane extr methodMO AVG <= 10 mg/L all year
007Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
007Oil and grease, hexane extr methodMO AVG <= 7.51 lb/d all year
007Oil and grease, hexane extr methodDAILY MX <= 11.26 lb/d all year
007Carbon, tot organic [TOC]MO AVG <= 75 mg/L all year
007Carbon, tot organic [TOC]DAILY MX <= 95 mg/L all year
007Carbon, tot organic [TOC]MO AVG <= 56.3 lb/d all year
007Carbon, tot organic [TOC]DAILY MX <= 71.31 lb/d all year
007Sulfate, total [as SO4]MO AVG <= 1463 mg/L all year
007Sulfate, total [as SO4]DAILY MX <= 1589 mg/L all year
007Sulfate, total [as SO4]MO AVG <= 1098 lb/d all year
007Sulfate, total [as SO4]DAILY MX <= 1193 lb/d all year
007Cadmium, total [as Cd]MO AVG report only all year
007Cadmium, total [as Cd]DAILY MX report only all year
007Chromium, total [as Cr]MO AVG report only all year
007Chromium, total [as Cr]DAILY MX report only all year
007Lead, total [as Pb]DAILY MX report only all year
007Manganese, total [as Mn]MO AVG report only all year
007Manganese, total [as Mn]DAILY MX report only all year
007Selenium, total [as Se]MO AVG <= 19.3 ug/L all year
007Selenium, total [as Se]DAILY MX <= 36.76 ug/L all year
007Selenium, total [as Se]MO AVG <= .0145 lb/d all year
007Selenium, total [as Se]DAILY MX <= .0276 lb/d all year
007Flow, in conduit or thru treatment plantMO AVG report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
007Chlorine, total residualINST MAX <= .099 mg/L all year
007Phenolic compounds, totalMO AVG report only all year
007Phenolic compounds, totalDAILY MX report only all year
008Oxygen demand, chem. [high level] [COD]MO AVG <= 180 mg/L all year
008Oxygen demand, chem. [high level] [COD]DAILY MX <= 360 mg/L all year
008Oxygen demand, chem. [high level] [COD]MO AVG <= 135.11 lb/d all year
008Oxygen demand, chem. [high level] [COD]DAILY MX <= 270.22 lb/d all year
008pHMINIMUM >= 6.5 SU all year
008pHMAXIMUM <= 9 SU all year
008Solids, total suspendedMO AVG <= 30 mg/L all year
008Solids, total suspendedDAILY MX <= 45 mg/L all year
008Solids, total suspendedMO AVG <= 22.52 lb/d all year
008Solids, total suspendedDAILY MX <= 33.78 lb/d all year
008Oil and grease, hexane extr methodMO AVG <= 10 mg/L all year
008Oil and grease, hexane extr methodDAILY MX <= 15 mg/L all year
008Oil and grease, hexane extr methodMO AVG <= 7.51 lb/d all year
008Oil and grease, hexane extr methodDAILY MX <= 11.26 lb/d all year
008Carbon, tot organic [TOC]MO AVG <= 75 mg/L all year
008Carbon, tot organic [TOC]DAILY MX <= 95 mg/L all year
008Carbon, tot organic [TOC]MO AVG <= 56.3 lb/d all year
008Carbon, tot organic [TOC]DAILY MX <= 71.31 lb/d all year
008Sulfate, total [as SO4]MO AVG <= 1463 mg/L all year
008Sulfate, total [as SO4]DAILY MX <= 1589 mg/L all year
008Sulfate, total [as SO4]MO AVG <= 1098 lb/d all year
008Sulfate, total [as SO4]DAILY MX <= 1193 lb/d all year
008Cadmium, total [as Cd]MO AVG report only all year
008Cadmium, total [as Cd]DAILY MX report only all year
008Chromium, total [as Cr]MO AVG report only all year
008Chromium, total [as Cr]DAILY MX report only all year
008Lead, total [as Pb]DAILY MX report only all year
008Manganese, total [as Mn]MO AVG report only all year
008Manganese, total [as Mn]DAILY MX report only all year
008Selenium, total [as Se]MO AVG <= 19.3 ug/L all year
008Selenium, total [as Se]DAILY MX <= 36.76 ug/L all year
008Selenium, total [as Se]MO AVG <= .0145 lb/d all year
008Selenium, total [as Se]DAILY MX <= .0276 lb/d all year
008Flow, in conduit or thru treatment plantMO AVG report only all year
008Flow, in conduit or thru treatment plantDAILY MX report only all year
008Chlorine, total residualINST MAX <= .099 mg/L all year
008Phenolic compounds, totalMO AVG report only all year
008Phenolic compounds, totalDAILY 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