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Petroleum Refining, major discharger, Wood River, Illinois. NPDES permit IL0000205 expired May 31, 2024; its limits still apply. Last 12 months: over a limit 6 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| November 2025 | BOD, 5-day, 20 deg. C, 30-day average | 2400 lb/d | ≤ 1208 lb/d | 99% |
| November 2025 | BOD, 5-day, 20 deg. C, 30-day average | 28 mg/L | ≤ 20 mg/L | 40% |
| November 2025 | BOD, 5-day, 20 deg. C, daily maximum | 105 mg/L | ≤ 40 mg/L | 163% |
| November 2025 | BOD, 5-day, 20 deg. C, daily maximum | 8481 lb/d | ≤ 4340 lb/d | 95% |
| February 2026 | Coliform, fecal general, geometric mean | > 37 #/100mL | ≤ 200 #/100mL | — |
| March 2026 | Chlorine, total residual, daily maximum | .13 mg/L | ≤ .05 mg/L | 160% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 122 deg F | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 20 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 40 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 1208 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 4340 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | 30-day average | ≤ 20821 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 40190 lb/d | all year | 001 |
| pH | monthly minimum | ≥ 6 SU | all year | 001 |
| pH | monthly maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 25 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 2388 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 3743 lb/d | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1626 lb/d | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3579 lb/d | all year | 001 |
| Phosphorus, total [as P] | 30-day average | ≤ 1 mg/L | all year | 001 |
| Phosphorus, total [as P] | 30-day average | ≤ 60 lb/d | all year | 001 |
| Cyanide, total [as CN] | 30-day average | ≤ .1 mg/L | all year | 001 |
| Cyanide, total [as CN] | daily maximum | ≤ .2 mg/L | all year | 001 |
| Cyanide, total [as CN] | 30-day average | ≤ 6 lb/d | all year | 001 |
| Cyanide, total [as CN] | daily maximum | ≤ 22 lb/d | all year | 001 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (ug/L) | all year | 001 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (ug/L) | all year | 001 |
| Sulfide, total [as S] | 30-day average | ≤ 16 lb/d | all year | 001 |
| Sulfide, total [as S] | daily maximum | ≤ 35 lb/d | all year | 001 |
| Chloride [as Cl] | quarterly maximum | report only (mg/L) | Jan, Apr, Jul, Oct | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 001 |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year | 001 |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year | 001 |
| Boron, total [as B] | daily maximum | report only (ug/L) | all year | 001 |
| Boron, total [as B] | daily maximum | report only (ug/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, hexavalent [as Cr] | 30-day average | ≤ .1 mg/L | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .2 mg/L | all year | 001 |
| Chromium, hexavalent [as Cr] | 30-day average | ≤ 1.5 lb/d | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ 3.4 lb/d | all year | 001 |
| Chromium, total [as Cr] | 30-day average | ≤ 1 mg/L | all year | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ 2 mg/L | all year | 001 |
| Chromium, total [as Cr] | 30-day average | ≤ 19 lb/d | all year | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ 53 lb/d | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 001 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 001 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 001 |
| Vanadium, total [as V] | daily maximum | report only (mg/L) | all year | 001 |
| Vanadium, total [as V] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 001 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 001 |
| Oil and grease | 30-day average | ≤ 15 mg/L | all year | 001 |
| Oil and grease | daily maximum | ≤ 30 mg/L | all year | 001 |
| Oil and grease | 30-day average | ≤ 867 lb/d | all year | 001 |
| Oil and grease | daily maximum | ≤ 1626 lb/d | all year | 001 |
| Coliform, fecal - % samples exceeding limit | maximum | ≤ 10 % | all year | 001 |
| Phenolics, total recoverable | 30-day average | ≤ .3 mg/L | all year | 001 |
| Phenolics, total recoverable | daily maximum | ≤ .6 mg/L | all year | 001 |
| Phenolics, total recoverable | 30-day average | ≤ 17 lb/d | all year | 001 |
| Phenolics, total recoverable | daily maximum | ≤ 40 lb/d | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 001 |
| Mercury, total [as Hg] | 30-day average | ≤ 1300 ng/L | all year | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ 2600 ng/L | all year | 001 |
| Mercury, total [as Hg] | 30-day average | ≤ .12 lb/d | all year | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .3 lb/d | all year | 001 |
| Mercury, total [as Hg] | annual average | ≤ 12 ng/L | all year | 001 |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year | 001 |
| Mercury, total [as Hg] | annual average | ≤ .00078 lb/d | all year | 001 |
| Mercury, total [as Hg] | monthly average | report only (lb/d) | all year | 001 |
| Coliform, fecal general | geometric mean | ≤ 200 #/100mL | all year | 001 |
| Coliform, fecal general | daily maximum | report only (#/100mL) | all year | 001 |
| Temperature, water deg. fahrenheit | monthly maximum | ≤ 122 deg F | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 20 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 40 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 1208 lb/d | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 4340 lb/d | all year | 002 |
| Oxygen demand, chem. [high level] [COD] | 30-day average | ≤ 20821 lb/d | all year | 002 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 40190 lb/d | all year | 002 |
| pH | monthly minimum | ≥ 6 SU | all year | 002 |
| pH | monthly maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 25 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 002 |
| Solids, total suspended | 30-day average | ≤ 2388 lb/d | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 3743 lb/d | all year | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1626 lb/d | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3579 lb/d | all year | 002 |
| Phosphorus, total [as P] | 30-day average | ≤ 1 mg/L | all year | 002 |
| Phosphorus, total [as P] | 30-day average | ≤ 60 lb/d | all year | 002 |
| Cyanide, total [as CN] | 30-day average | ≤ .1 mg/L | all year | 002 |
| Cyanide, total [as CN] | daily maximum | ≤ .2 mg/L | all year | 002 |
| Cyanide, total [as CN] | 30-day average | ≤ 6 lb/d | all year | 002 |
| Cyanide, total [as CN] | daily maximum | ≤ 22 lb/d | all year | 002 |
| Sulfide, total [as S] | 30-day average | ≤ 16 lb/d | all year | 002 |
| Sulfide, total [as S] | daily maximum | ≤ 35 lb/d | all year | 002 |
| Chloride [as Cl] | quarterly maximum | report only (mg/L) | Jan, Apr, Jul, Oct | 002 |
| Chromium, hexavalent [as Cr] | 30-day average | ≤ .1 mg/L | all year | 002 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .2 mg/L | all year | 002 |
| Chromium, hexavalent [as Cr] | 30-day average | ≤ 1.5 lb/d | all year | 002 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ 3.4 lb/d | all year | 002 |
| Chromium, total [as Cr] | 30-day average | ≤ 1 mg/L | all year | 002 |
| Chromium, total [as Cr] | daily maximum | ≤ 2 mg/L | all year | 002 |
| Chromium, total [as Cr] | 30-day average | ≤ 19 lb/d | all year | 002 |
| Chromium, total [as Cr] | daily maximum | ≤ 53 lb/d | all year | 002 |
| Oil and grease | 30-day average | ≤ 15 mg/L | all year | 002 |
| Oil and grease | daily maximum | ≤ 30 mg/L | all year | 002 |
| Oil and grease | 30-day average | ≤ 867 lb/d | all year | 002 |
| Oil and grease | daily maximum | ≤ 1626 lb/d | all year | 002 |
| Coliform, fecal - % samples exceeding limit | maximum | ≤ 10 % | all year | 002 |
| Phenolics, total recoverable | 30-day average | ≤ .3 mg/L | all year | 002 |
| Phenolics, total recoverable | daily maximum | ≤ .6 mg/L | all year | 002 |
| Phenolics, total recoverable | 30-day average | ≤ 17 lb/d | all year | 002 |
| Phenolics, total recoverable | daily maximum | ≤ 40 lb/d | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | all year | 002 |
| Mercury, total [as Hg] | 30-day average | ≤ 1300 ng/L | all year | 002 |
| Mercury, total [as Hg] | daily maximum | ≤ 2600 ng/L | all year | 002 |
| Mercury, total [as Hg] | 30-day average | ≤ .12 lb/d | all year | 002 |
| Mercury, total [as Hg] | daily maximum | ≤ .3 lb/d | all year | 002 |
| Mercury, total [as Hg] | annual average | ≤ 12 ng/L | all year | 002 |
| Mercury, total [as Hg] | monthly average | report only (ng/L) | all year | 002 |
| Mercury, total [as Hg] | annual average | ≤ .00078 lb/d | all year | 002 |
| Mercury, total [as Hg] | monthly average | report only (lb/d) | all year | 002 |
| Coliform, fecal general | geometric mean | ≤ 200 #/100mL | all year | 002 |
| Coliform, fecal general | daily maximum | report only (#/100mL) | all year | 002 |
| pH | monthly minimum | ≥ 6.5 SU | all year | 003 |
| pH | monthly maximum | ≤ 9 SU | all year | 003 |
| Oil and grease [soxhlet extr.] tot. | monthly average | report only (mg/L) | all year | 003 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 15 mg/L | all year | 003 |
| Carbon, tot organic [TOC] | monthly average | report only (mg/L) | all year | 003 |
| Carbon, tot organic [TOC] | daily maximum | ≤ 110 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
Cited limits by parameter: Illinois's rules and the federal ones.
Same industry: the 9 Petroleum Refining and Related Industries permits in Illinois.
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