HUNT SOUTHLAND REFINING CO LLC

NPDES permit MS0001686 · 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 11 forms filed late

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

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MS permits in EPA's filings — check your permit).

Limits in force (54)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMAXIMUM <= 90 deg F all year
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 42 mg/L all year
001Solids, total suspendedDAILY MX <= 68.1 mg/L all year
001Solids, total suspendedMO AVG <= 43.8 lb/d all year
001Solids, total suspendedDAILY MX <= 71 lb/d all year
001Oil & GreaseMO AVG <= 13.5 mg/L all year
001Oil & GreaseDAILY MX <= 25.7 mg/L all year
001Oil & GreaseMO AVG <= 15.8 lb/d all year
001Oil & GreaseDAILY MX <= 30.4 lb/d all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 1.46 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 2.92 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 1.52 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 3.04 lb/d all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Sulfide, total [as S]MO AVG <= .65 mg/L all year
001Sulfide, total [as S]DAILY MX <= 1.44 mg/L all year
001Sulfide, total [as S]MO AVG <= .71 lb/d all year
001Sulfide, total [as S]DAILY MX <= 1.56 lb/d all year
001Chromium, hexavalent [as Cr]MO AVG <= .011 mg/L all year
001Chromium, hexavalent [as Cr]DAILY MX <= .016 mg/L all year
001Chromium, hexavalent [as Cr]MO AVG <= .013 lb/d all year
001Chromium, hexavalent [as Cr]DAILY MX <= .019 lb/d all year
001Chromium, total [as Cr]MO AVG <= .042 mg/L all year
001Chromium, total [as Cr]DAILY MX <= .089 mg/L all year
001Chromium, total [as Cr]MO AVG <= .044 lb/d all year
001Chromium, total [as Cr]DAILY MX <= .093 lb/d all year
001Zinc, total [as Zn]MO AVG <= .076 mg/L all year
001Zinc, total [as Zn]DAILY MX <= .076 mg/L all year
001Zinc, total [as Zn]MO AVG <= .089 lb/d all year
001Zinc, total [as Zn]DAILY MX <= .089 lb/d all year
001Aluminum, total recoverableMO AVG <= .7 mg/L all year
001Aluminum, total recoverableDAILY MX <= 2 mg/L all year
001Aluminum, total recoverableMO AVG report only all year
001Aluminum, total recoverableDAILY MX report only all year
001Phenolic compounds, totalMO AVG <= .102 mg/L all year
001Phenolic compounds, totalDAILY MX <= .3 mg/L all year
001Phenolic compounds, totalMO AVG <= .12 lb/d all year
001Phenolic compounds, totalDAILY MX <= .3 lb/d all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 15.9 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 28 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 16.6 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 33.2 lb/d all year
001Chemical Oxygen Demand [COD]MO AVG <= 218.7 mg/L all year
001Chemical Oxygen Demand [COD]DAILY MX <= 423 mg/L all year
001Chemical Oxygen Demand [COD]MO AVG <= 259 lb/d all year
001Chemical Oxygen Demand [COD]DAILY MX <= 500.9 lb/d all year
001Flow, totalMO AVG report only all year
001Flow, 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