THE PREMCOR REFINING GROUP INC

NPDES permit IL0001244 · Minor NON-POTW · effective, expires 2030-03-31 · 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 26 forms filed late

Last period with anything received: 2026-07-31. Most often over: Manganese, total [as Mn] (2), BOD, 5-day, 20 deg. C (1).

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among IL permits in EPA's filings — check your permit).

Limits in force (53)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO MAX report only all year
001BOD, 5-day, 20 deg. C30DA AVG <= 20 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 40 mg/L all year
001BOD, 5-day, 20 deg. C30DA AVG <= 133 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 400 lb/d all year
001pHMO MIN >= 6 SU all year
001pHMO MAX <= 9 SU all year
001Solids, total suspended30DA AVG <= 25 mg/L all year
001Solids, total suspendedDAILY MX <= 50 mg/L all year
001Solids, total suspended30DA AVG <= 166 lb/d all year
001Solids, total suspendedDAILY MX <= 500 lb/d all year
001Nitrogen, ammonia total [as N]SEMI AVG report only Mar, Sep
001Nitrogen, ammonia total [as N]SX report only Mar, Sep
001Chromium, hexavalent [as Cr]QRTR AVG <= .1 mg/L all year
001Chromium, hexavalent [as Cr]QB <= .2 mg/L all year
001Chromium, hexavalent [as Cr]QRTR AVG <= .67 lb/d all year
001Chromium, hexavalent [as Cr]QB <= 2 lb/d all year
001Chromium, total [as Cr]QRTR AVG <= 1 mg/L all year
001Chromium, total [as Cr]QB <= 2 mg/L all year
001Chromium, total [as Cr]QRTR AVG <= 6.7 lb/d all year
001Chromium, total [as Cr]QB <= 20 lb/d all year
001Oil and grease30DA AVG <= 15 mg/L all year
001Oil and greaseDAILY MX <= 30 mg/L all year
001Oil and grease30DA AVG <= 100 lb/d all year
001Oil and greaseDAILY MX <= 300 lb/d all year
001Polynuclear Aromatic Hydrocarbons [PAHs]QB <= .1 mg/L all year
001Polynuclear Aromatic Hydrocarbons [PAHs]QB <= 1 lb/d all year
001Benzene, ethylbenzene, toluene, xylene combinationQB <= .75 mg/L all year
001Benzene, ethylbenzene, toluene, xylene combinationQB <= 7.5 lb/d all year
001BenzeneQB <= .05 mg/L all year
001BenzeneQB <= .6 lb/d all year
001Phenols30DA AVG <= .3 mg/L all year
001PhenolsDAILY MX <= .6 mg/L all year
001Phenols30DA AVG <= 2 lb/d all year
001PhenolsDAILY MX <= 6 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
003BOD, 5-day, 20 deg. C30DA AVG <= 20 mg/L all year
003BOD, 5-day, 20 deg. CDAILY MX <= 40 mg/L all year
003pHMO MIN >= 6 SU all year
003pHMO MAX <= 9 SU all year
003Solids, total suspended30DA AVG <= 25 mg/L all year
003Solids, total suspendedDAILY MX <= 50 mg/L all year
003Copper, total [as Cu]30DA AVG <= .5 mg/L all year
003Copper, total [as Cu]DAILY MX <= 1 mg/L all year
003Iron, total [as Fe]30DA AVG <= 2 mg/L all year
003Iron, total [as Fe]DAILY MX <= 4 mg/L all year
003Manganese, total [as Mn]30DA AVG <= 1 mg/L all year
003Manganese, total [as Mn]DAILY MX <= 2 mg/L all year
003Nickel, total [as Ni]30DA AVG <= .0095 mg/L all year
003Nickel, total [as Ni]DAILY MX <= .1565 mg/L 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

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