Aethon Energy Operating LLC

NPDES permit WY0002062 · Minor NON-POTW · expired, expires 2025-07-31 · 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.

This permit expired on 2025-07-31 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 66 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 (135)

OutfallParameterStatisticLimitMonths
003Temperature, water deg. fahrenheitDAILY MX <= 88 deg F all year
003Oxygen, dissolved [DO]DAILY MX report only all year
003pHINST MIN >= 6.5 SU all year
003pHINST MAX <= 9 SU all year
003Nitrogen, total [as N]DAILY MX report only all year
003Nitrogen, ammonia total [as N]DAILY MX report only all year
003Nitrite + Nitrate total [as N]DAILY MX report only all year
003Phosphorus, total [as P]DAILY MX report only all year
003Sulfide, total [as S]DAILY MX <= 20 ug/L all year
003Iron, dissolved [as Fe]DAILY MX <= 1000 ug/L all year
003Phosphate, ortho [as P]DAILY MX report only all year
003TolueneDAILY MX report only all year
003BenzeneDAILY MX report only all year
003EthylbenzeneDAILY MX report only all year
003ChlorideDAILY MX <= 230 mg/L all year
003Solids, total dissolvedDAILY MX report only all year
003FlowMO AVG report only all year
003FlowDAILY MX report only all year
003Isopropyl alcohol [C3H8O], sed.DAILY MX report only all year
003Ethylene glycolDAILY MX report only all year
003Methanol, totalDAILY MX report only all year
003Chemical Oxygen Demand [COD]DAILY MX report only all year
003SulfateDAILY MX <= 3000 mg/L all year
003Xylene [mix of m+o+p]DAILY MX report only all year
003Produced water, oil and greaseDAILY MX <= 10 mg/L all year
003Pass/Fail Static 48Hr Acute Daphnia Magna4C = 0 pass=0;fail=1 all year
003Pass/Fail Static 96 Hr Acute Pimephales Promelas9D = 0 pass=0;fail=1 all year
006Temperature, water deg. fahrenheitDAILY MX <= 88 deg F all year
006Oxygen, dissolved [DO]DAILY MX report only all year
006pHINST MIN >= 6.5 SU all year
006pHINST MAX <= 9 SU all year
006Nitrogen, total [as N]DAILY MX report only all year
006Nitrogen, ammonia total [as N]DAILY MX report only all year
006Nitrite + Nitrate total [as N]DAILY MX report only all year
006Phosphorus, total [as P]DAILY MX report only all year
006Sulfide, total [as S]DAILY MX <= 20 ug/L all year
006Iron, dissolved [as Fe]DAILY MX <= 1000 ug/L all year
006Phosphate, ortho [as P]DAILY MX report only all year
006TolueneDAILY MX report only all year
006BenzeneDAILY MX report only all year
006EthylbenzeneDAILY MX report only all year
006ChlorideDAILY MX <= 230 mg/L all year
006Solids, total dissolvedDAILY MX report only all year
006FlowMO AVG report only all year
006FlowDAILY MX report only all year
006Isopropyl alcohol [C3H8O], sed.DAILY MX report only all year
006Ethylene glycolDAILY MX report only all year
006Methanol, totalDAILY MX report only all year
006Chemical Oxygen Demand [COD]DAILY MX report only all year
006SulfateDAILY MX <= 3000 mg/L all year
006Xylene [mix of m+o+p]DAILY MX report only all year
006Produced water, oil and greaseDAILY MX <= 10 mg/L all year
006Pass/Fail Static 48Hr Acute Daphnia Magna4C = 0 pass=0;fail=1 all year
006Pass/Fail Static 96 Hr Acute Pimephales Promelas9D = 0 pass=0;fail=1 all year
009Temperature, water deg. fahrenheitDAILY MX <= 88 deg F all year
009Oxygen, dissolved [DO]DAILY MX report only all year
009pHINST MIN >= 6.5 SU all year
009pHINST MAX <= 9 SU all year
009Nitrogen, total [as N]DAILY MX report only all year
009Nitrogen, ammonia total [as N]DAILY MX report only all year
009Nitrite + Nitrate total [as N]DAILY MX report only all year
009Phosphorus, total [as P]DAILY MX report only all year
009Sulfide, total [as S]DAILY MX <= 20 ug/L all year
009Iron, dissolved [as Fe]DAILY MX <= 1000 ug/L all year
009Phosphate, ortho [as P]DAILY MX report only all year
009TolueneDAILY MX report only all year
009BenzeneDAILY MX report only all year
009EthylbenzeneDAILY MX report only all year
009ChlorideDAILY MX <= 230 mg/L all year
009Solids, total dissolvedDAILY MX report only all year
009FlowMO AVG report only all year
009FlowDAILY MX report only all year
009Isopropyl alcohol [C3H8O], sed.DAILY MX report only all year
009Ethylene glycolDAILY MX report only all year
009Methanol, totalDAILY MX report only all year
009Chemical Oxygen Demand [COD]DAILY MX report only all year
009SulfateDAILY MX <= 3000 mg/L all year
009Xylene [mix of m+o+p]DAILY MX report only all year
009Produced water, oil and greaseDAILY MX <= 10 mg/L all year
009Pass/Fail Static 48Hr Acute Daphnia Magna4C = 0 pass=0;fail=1 all year
009Pass/Fail Static 96 Hr Acute Pimephales Promelas9D = 0 pass=0;fail=1 all year
016Temperature, water deg. fahrenheitDAILY MX <= 88 deg F all year
016Oxygen, dissolved [DO]DAILY MX report only all year
016pHINST MIN >= 6.5 SU all year
016pHINST MAX <= 9 SU all year
016Nitrogen, total [as N]DAILY MX report only all year
016Nitrogen, ammonia total [as N]DAILY MX report only all year
016Nitrite + Nitrate total [as N]DAILY MX report only all year
016Phosphorus, total [as P]DAILY MX report only all year
016Sulfide, total [as S]DAILY MX <= 20 ug/L all year
016Iron, dissolved [as Fe]DAILY MX <= 1000 ug/L all year
016Phosphate, ortho [as P]DAILY MX report only all year
016TolueneDAILY MX report only all year
016BenzeneDAILY MX report only all year
016EthylbenzeneDAILY MX report only all year
016ChlorideDAILY MX <= 230 mg/L all year
016Solids, total dissolvedDAILY MX report only all year
016FlowMO AVG report only all year
016FlowDAILY MX report only all year
016Isopropyl alcohol [C3H8O], sed.DAILY MX report only all year
016Ethylene glycolDAILY MX report only all year
016Methanol, totalDAILY MX report only all year
016Chemical Oxygen Demand [COD]DAILY MX report only all year
016SulfateDAILY MX <= 3000 mg/L all year
016Xylene [mix of m+o+p]DAILY MX report only all year
016Produced water, oil and greaseDAILY MX <= 10 mg/L all year
016Pass/Fail Static 48Hr Acute Daphnia Magna4C = 0 pass=0;fail=1 all year
016Pass/Fail Static 96 Hr Acute Pimephales Promelas9D = 0 pass=0;fail=1 all year
BWC1Temperature, water deg. fahrenheitDAILY MX report only all year
BWC1Oxygen, dissolved [DO]DAILY MX report only all year
BWC1pHINST MIN report only all year
BWC1pHINST MAX report only all year
BWC1ChlorideDAILY MX report only all year
BWC1Solids, total dissolvedDAILY MX report only all year
BWC1Produced water, oil and greaseDAILY MX report only all year
BWC2Oxygen, dissolved [DO]DAILY MX report only all year
BWC2BOD, 5-day, 20 deg. CDAILY MX report only all year
BWC2pHINST MIN report only all year
BWC2pHINST MAX report only all year
BWC2Solids, total suspendedDAILY MX report only all year
DMP1Temperature, water deg. fahrenheitDAILY MX report only all year
DMP1Oxygen, dissolved [DO]DAILY MN report only all year
DMP1pHINST MIN report only all year
DMP1pHINST MAX report only all year
DMP1Barium, total [as Ba]DAILY MX report only all year
DMP1Radium 226 + radium 228, totalDAILY MX report only all year
DMP1TolueneDAILY MX report only all year
DMP1BenzeneDAILY MX report only all year
DMP1EthylbenzeneDAILY MX report only all year
DMP1ChlorideDAILY MX report only all year
DMP1Solids, total dissolvedDAILY MX report only all year
DMP1Xylene [mix of m+o+p]DAILY MX report only all year
DMP1Produced water, oil and greaseDAILY MX report only all year
SUMSolids, total dissolvedMO TOTAL <= 908 ton/mo all year
SUMSolids, total dissolvedMO TOTAL <= 908 ton/mo 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