MARATHON PETROLEUM COMPANY, LP

NPDES permit IL0004073 · Major NON-POTW · effective, expires 2027-09-30 · 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
21required values missing, on 3 form(s)
3of 35 forms filed late

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

Reporting

Reports are due about 21 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (166)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX <= 68 deg F Jan, Feb
001Temperature, water deg. fahrenheitDAILY MX <= 77 deg F Mar, Dec
001Temperature, water deg. fahrenheitDAILY MX <= 85 deg F Apr
001Temperature, water deg. fahrenheitDAILY MX <= 91 deg F May
001Temperature, water deg. fahrenheitDAILY MX <= 93 deg F Jun, Jul, Aug, Sep
001Temperature, water deg. fahrenheitDAILY MX <= 90 deg F Oct
001Temperature, water deg. fahrenheitDAILY MX <= 88 deg F Nov
001Temperature, water deg. fahrenheitAVERAGE <= 87 deg F Jun, Jul, Aug, Sep
001Oxygen, dissolved [DO]MO AV MN >= 5.5 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]MN WK AV >= 4 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]MN WK AV >= 6 mg/L Mar, Apr, May, Jun, Jul
001Oxygen, dissolved [DO]DAILY MN >= 3.5 mg/L Jan, Feb, Aug, Sep, Oct, Nov, Dec
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L Mar, Apr, May, Jun, Jul
001BOD, 5-day, 20 deg. C30DA AVG <= 10 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 20 mg/L all year
001BOD, 5-day, 20 deg. C30DA AVG <= 222 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 573 lb/d all year
001Oxygen demand, chem. [high level] [COD]30DA AVG <= 9767 lb/d all year
001Oxygen demand, chem. [high level] [COD]DAILY MX <= 18821 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspended30DA AVG <= 12 mg/L all year
001Solids, total suspendedDAILY MX <= 24 mg/L all year
001Solids, total suspended30DA AVG <= 267 lb/d all year
001Solids, total suspendedDAILY MX <= 687 lb/d all year
001Oil and grease [soxhlet extr.] tot.30DA AVG <= 15 mg/L all year
001Oil and grease [soxhlet extr.] tot.DAILY MX <= 30 mg/L all year
001Oil and grease [soxhlet extr.] tot.30DA AVG <= 333 lb/d all year
001Oil and grease [soxhlet extr.] tot.DAILY MX <= 763 lb/d all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]30DA AVG <= 4 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 1.6 mg/L Mar, Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 1.5 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 6.8 mg/L Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 6.6 mg/L Mar, Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 6.9 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]30DA AVG <= 91 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]30DA AVG <= 36 lb/d Mar, Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]30DA AVG <= 34 lb/d Jun, Jul, Aug
001Nitrogen, ammonia total [as N]DAILY MX <= 199 lb/d Jan, Feb, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 193 lb/d Mar, Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]DAILY MX <= 201 lb/d Jun, Jul, Aug
001Nitrogen, ammonia total [as N]WKLY AVG <= 4 mg/L Mar, Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 3.8 mg/L Jun, Jul, Aug
001Nitrogen, ammonia total [as N]WKLY AVG <= 91 lb/d Mar, Apr, May, Sep, Oct
001Nitrogen, ammonia total [as N]WKLY AVG <= 86 lb/d Jun, Jul, Aug
001Phosphorus, total [as P]DAILY MX report only all year
001Cyanide, weak acid, dissociableDAILY MX report only all year
001Cyanide, weak acid, dissociableDAILY MX report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Cyanide, total [as CN]DAILY MX report only all year
001Sulfide, total [as S]30DA AVG <= 7.4 lb/d all year
001Sulfide, total [as S]DAILY MX <= 16.5 lb/d all year
001Chloride [as Cl]DAILY MX <= 1000 mg/L all year
001Chloride [as Cl]DAILY MX <= 28643 lb/d all year
001Sulfate, total [as SO4]DAILY MX report only all year
001Fluoride, total [as F]30DA AVG <= 4 mg/L all year
001Fluoride, total [as F]DAILY MX <= 17 mg/L all year
001Fluoride, total [as F]30DA AVG <= 91 lb/d all year
001Fluoride, total [as F]DAILY MX <= 486 lb/d all year
001Arsenic, total [as As]DAILY MX report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Barium, total [as Ba]DAILY MX report only all year
001Barium, total [as Ba]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Chromium, hexavalent [as Cr]30DA AVG <= .011 mg/L Jan, Jul
001Chromium, hexavalent [as Cr]DAILY MX <= .016 mg/L Jan, Jul
001Chromium, hexavalent [as Cr]30DA AVG <= .24 lb/d Jan, Jul
001Chromium, hexavalent [as Cr]DAILY MX <= .46 lb/d Jan, Jul
001Chromium, total [as Cr]30DA AVG <= 1 mg/L Jan, Jul
001Chromium, total [as Cr]DAILY MX <= 2 mg/L Jan, Jul
001Chromium, total [as Cr]30DA AVG <= 9.8 lb/d Jan, Jul
001Chromium, total [as Cr]DAILY MX <= 28 lb/d Jan, Jul
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Iron, dissolved [as Fe]DAILY MX report only all year
001Iron, dissolved [as Fe]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Manganese, total [as Mn]DAILY MX report only all year
001Manganese, total [as Mn]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Vanadium, total [as V]DAILY MX report only all year
001Vanadium, total [as V]DAILY MX report only all year
001Zinc, total [as Zn]30DA AVG report only Jan, Jul
001Zinc, total [as Zn]DAILY MX report only Jan, Jul
001Selenium, total [as Se]MO AVG report only Jan, Jul
001Selenium, total [as Se]DAILY MX report only Jan, Jul
001PhenolDAILY MX <= .1 mg/L all year
001PhenolDAILY MX <= 2.9 lb/d all year
001Temperature, length of excursionTOTAL <= 87.6 hr/12mo 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
001Mercury, total [as Hg]30DA AVG report only Jan, Jul
001Mercury, total [as Hg]DAILY MX report only Jan, Jul
002BOD, 5-day, 20 deg. C30DA AVG <= 10 mg/L all year
002BOD, 5-day, 20 deg. CDAILY MX <= 20 mg/L all year
002Oxygen demand, chem. [high level] [COD]30DA AVG report only all year
002Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
002pHMO MIN >= 6 SU all year
002pHMO MAX <= 9 SU all year
002Solids, total suspended30DA AVG <= 12 mg/L all year
002Solids, total suspendedDAILY MX <= 24 mg/L all year
002Oil and grease [soxhlet extr.] tot.30DA AVG <= 15 mg/L all year
002Oil and grease [soxhlet extr.] tot.DAILY MX <= 30 mg/L all year
002Nitrogen, ammonia total [as N]30DA AVG <= 1.6 mg/L Mar, Apr, May, Sep, Oct
002Nitrogen, ammonia total [as N]30DA AVG <= 1.5 mg/L Jun, Jul, Aug
002Nitrogen, ammonia total [as N]30DA AVG <= 4 mg/L Jan, Feb, Nov, Dec
002Nitrogen, ammonia total [as N]DAILY MX <= 6.6 mg/L Mar, Apr, May, Sep, Oct
002Nitrogen, ammonia total [as N]DAILY MX <= 6.9 mg/L Jun, Jul, Aug
002Nitrogen, ammonia total [as N]DAILY MX <= 6.8 mg/L Jan, Feb, Nov, Dec
002Nitrogen, ammonia total [as N]WKLY AVG <= 4 mg/L Mar, Apr, May, Sep, Oct
002Nitrogen, ammonia total [as N]WKLY AVG <= 3.8 mg/L Jun, Jul, Aug
002Chloride [as Cl]DAILY MX <= 500 mg/L all year
002Chromium, hexavalent [as Cr]30DA AVG <= .011 mg/L all year
002Chromium, hexavalent [as Cr]DAILY MX <= .016 mg/L all year
002Chromium, total [as Cr]30DA AVG <= 1 mg/L all year
002Chromium, total [as Cr]DAILY MX <= 2 mg/L all year
002Polynuclear Aromatic Hydrocarbons [PAHs]30DA AVG report only all year
002Polynuclear Aromatic Hydrocarbons [PAHs]DAILY MX report only all year
002Benzene, ethylbenzene, toluene, xylene combinationMO AVG report only all year
002Benzene, ethylbenzene, toluene, xylene combinationDAILY MX report only all year
002PhenolsDAILY MX <= .1 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
003BOD, 5-day, 20 deg. C30DA AVG report only Jan, Jul
003BOD, 5-day, 20 deg. CDAILY MX report only Jan, Jul
003Oxygen demand, chem. [high level] [COD]30DA AVG report only Jan, Jul
003Oxygen demand, chem. [high level] [COD]DAILY MX report only Jan, Jul
003pHMINIMUM >= 6 SU (alert) all year
003pHMO MIN >= 6 SU all year
003pHMAXIMUM <= 9 SU (alert) all year
003pHMO MAX report only all year
003Solids, total suspended30DA AVG <= 15 mg/L Jan, Jul
003Solids, total suspendedDAILY MX <= 30 mg/L Jan, Jul
003Oil and grease [soxhlet extr.] tot.30DA AVG <= 15 mg/L all year
003Oil and grease [soxhlet extr.] tot.DAILY MX <= 30 mg/L all year
003Nitrogen, ammonia total [as N]30DA AVG <= 4 mg/L Jan, Feb, Nov, Dec
003Nitrogen, ammonia total [as N]30DA AVG <= 1.6 mg/L Mar, Apr, May, Sep, Oct
003Nitrogen, ammonia total [as N]30DA AVG <= 1.5 mg/L Jun, Jul, Aug
003Nitrogen, ammonia total [as N]DAILY MX <= 6.8 mg/L Jan, Feb, Nov, Dec
003Nitrogen, ammonia total [as N]DAILY MX <= 6.6 mg/L Mar, Apr, May, Sep, Oct
003Nitrogen, ammonia total [as N]DAILY MX <= 6.9 mg/L Jun, Jul, Aug
003Nitrogen, ammonia total [as N]WKLY AVG <= 4 mg/L Mar, Apr, May, Sep, Oct
003Nitrogen, ammonia total [as N]WKLY AVG <= 3.8 mg/L Jun, Jul, Aug
003Carbon, tot organic [TOC]30DA AVG report only Jan, Jul
003Carbon, tot organic [TOC]DAILY MX report only Jan, Jul
003Sulfide, total [as S]30DA AVG report only Jan, Jul
003Sulfide, total [as S]DAILY MX report only Jan, Jul
003Chloride [as Cl]30DA AVG report only Jan, Jul
003Chloride [as Cl]DAILY MX <= 500 mg/L Jan, Jul
003Sulfate, total [as SO4]30DA AVG report only Jan, Jul
003Sulfate, total [as SO4]DAILY MX report only Jan, Jul
003Fluoride, total [as F]30DA AVG <= 15 mg/L Jan, Jul
003Fluoride, total [as F]DAILY MX <= 30 mg/L Jan, Jul
003Chromium, total [as Cr]30DA AVG <= 1 mg/L all year
003Chromium, total [as Cr]DAILY MX <= 2 mg/L all year
003PhenolDAILY MX <= .1 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

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