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Petroleum Refining, major discharger, Robinson, Illinois. NPDES permit IL0004073, in force until Sep 30, 2027. Last 12 months: no values over a limit, 21 required values missing, 3 of 38 reports late. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | daily maximum | ≤ 68 deg F | Jan, Feb | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 77 deg F | Mar, Dec | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 85 deg F | Apr | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 91 deg F | May | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 93 deg F | Jun–Sep | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 90 deg F | Oct | 001 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 88 deg F | Nov | 001 |
| Temperature, water deg. fahrenheit | average | ≤ 87 deg F | Jun–Sep | 001 |
| Oxygen, dissolved [DO] | monthly average minimum | ≥ 5.5 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | 001 |
| Oxygen, dissolved [DO] | minimum weekly average | ≥ 4 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | 001 |
| Oxygen, dissolved [DO] | minimum weekly average | ≥ 6 mg/L | Mar–Jul | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 3.5 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | Mar–Jul | 001 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 10 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 20 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 222 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 573 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | 30-day average | ≤ 9767 lb/d | all year | 001 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 18821 lb/d | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 12 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 24 mg/L | all year | 001 |
| Solids, total suspended | 30-day average | ≤ 267 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 687 lb/d | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | 30-day average | ≤ 15 mg/L | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 30 mg/L | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | 30-day average | ≤ 333 lb/d | all year | 001 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 763 lb/d | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.6 mg/L | Mar, Apr, May, Sep, Oct | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.5 mg/L | Jun–Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.8 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.6 mg/L | Mar, Apr, May, Sep, Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Jun–Aug | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 91 lb/d | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 36 lb/d | Mar, Apr, May, Sep, Oct | 001 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 34 lb/d | Jun–Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 199 lb/d | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 193 lb/d | Mar, Apr, May, Sep, Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 201 lb/d | Jun–Aug | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4 mg/L | Mar, Apr, May, Sep, Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3.8 mg/L | Jun–Aug | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 91 lb/d | Mar, Apr, May, Sep, Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 86 lb/d | Jun–Aug | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | all year | 001 |
| Cyanide, weak acid, dissociable | daily maximum | report only (ug/L) | all year | 001 |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year | 001 |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year | 001 |
| Sulfide, total [as S] | 30-day average | ≤ 7.4 lb/d | all year | 001 |
| Sulfide, total [as S] | daily maximum | ≤ 16.5 lb/d | all year | 001 |
| Chloride [as Cl] | daily maximum | ≤ 1000 mg/L | all year | 001 |
| Chloride [as Cl] | daily maximum | ≤ 28643 lb/d | all year | 001 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | all year | 001 |
| Fluoride, total [as F] | 30-day average | ≤ 4 mg/L | all year | 001 |
| Fluoride, total [as F] | daily maximum | ≤ 17 mg/L | all year | 001 |
| Fluoride, total [as F] | 30-day average | ≤ 91 lb/d | all year | 001 |
| Fluoride, total [as F] | daily maximum | ≤ 486 lb/d | 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 |
| 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 | ≤ .011 mg/L | Jan, Jul | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .016 mg/L | Jan, Jul | 001 |
| Chromium, hexavalent [as Cr] | 30-day average | ≤ .24 lb/d | Jan, Jul | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .46 lb/d | Jan, Jul | 001 |
| Chromium, total [as Cr] | 30-day average | ≤ 1 mg/L | Jan, Jul | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ 2 mg/L | Jan, Jul | 001 |
| Chromium, total [as Cr] | 30-day average | ≤ 9.8 lb/d | Jan, Jul | 001 |
| Chromium, total [as Cr] | daily maximum | ≤ 28 lb/d | Jan, Jul | 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) | Jan, Jul | 001 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | Jan, Jul | 001 |
| Phenol | daily maximum | ≤ .1 mg/L | all year | 001 |
| Phenol | daily maximum | ≤ 2.9 lb/d | all year | 001 |
| Temperature, length of excursion | total | ≤ 87.6 hr/12mo | 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 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | Jan, Jul | 001 |
| BOD, 5-day, 20 deg. C | 30-day average | ≤ 10 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 20 mg/L | all year | 002 |
| Oxygen demand, chem. [high level] [COD] | 30-day average | report only (mg/L) | all year | 002 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | 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 | ≤ 12 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 24 mg/L | all year | 002 |
| Oil and grease [soxhlet extr.] tot. | 30-day average | ≤ 15 mg/L | all year | 002 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 30 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.6 mg/L | Mar, Apr, May, Sep, Oct | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.5 mg/L | Jun–Aug | 002 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4 mg/L | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.6 mg/L | Mar, Apr, May, Sep, Oct | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Jun–Aug | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.8 mg/L | Jan, Feb, Nov, Dec | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4 mg/L | Mar, Apr, May, Sep, Oct | 002 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3.8 mg/L | Jun–Aug | 002 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | all year | 002 |
| Chromium, hexavalent [as Cr] | 30-day average | ≤ .011 mg/L | all year | 002 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ .016 mg/L | 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 |
| Polynuclear Aromatic Hydrocarbons [PAHs] | 30-day average | report only (mg/L) | all year | 002 |
| Polynuclear Aromatic Hydrocarbons [PAHs] | daily maximum | report only (mg/L) | all year | 002 |
| Benzene, ethylbenzene, toluene, xylene combination | monthly average | report only (mg/L) | all year | 002 |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | report only (mg/L) | all year | 002 |
| Phenols | daily maximum | ≤ .1 mg/L | 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 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | Jan, Jul | 003 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | report only (mg/L) | Jan, Jul | 003 |
| pH | minimum | ≥ 6 SU (alert, not enforceable) | all year | 003 |
| pH | monthly minimum | ≥ 6 SU | all year | 003 |
| pH | maximum | ≤ 9 SU (alert, not enforceable) | all year | 003 |
| pH | monthly maximum | report only (SU) | all year | 003 |
| Solids, total suspended | 30-day average | ≤ 15 mg/L | Jan, Jul | 003 |
| Solids, total suspended | daily maximum | ≤ 30 mg/L | Jan, Jul | 003 |
| Oil and grease [soxhlet extr.] tot. | 30-day average | ≤ 15 mg/L | all year | 003 |
| Oil and grease [soxhlet extr.] tot. | daily maximum | ≤ 30 mg/L | all year | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 4 mg/L | Jan, Feb, Nov, Dec | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.6 mg/L | Mar, Apr, May, Sep, Oct | 003 |
| Nitrogen, ammonia total [as N] | 30-day average | ≤ 1.5 mg/L | Jun–Aug | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.8 mg/L | Jan, Feb, Nov, Dec | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.6 mg/L | Mar, Apr, May, Sep, Oct | 003 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6.9 mg/L | Jun–Aug | 003 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 4 mg/L | Mar, Apr, May, Sep, Oct | 003 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 3.8 mg/L | Jun–Aug | 003 |
| Carbon, tot organic [TOC] | daily maximum | report only (mg/L) | Jan, Jul | 003 |
| Sulfide, total [as S] | daily maximum | report only (mg/L) | Jan, Jul | 003 |
| Chloride [as Cl] | daily maximum | ≤ 500 mg/L | Jan, Jul | 003 |
| Sulfate, total [as SO4] | daily maximum | report only (mg/L) | Jan, Jul | 003 |
| Fluoride, total [as F] | 30-day average | ≤ 15 mg/L | Jan, Jul | 003 |
| Fluoride, total [as F] | daily maximum | ≤ 30 mg/L | Jan, Jul | 003 |
| Chromium, total [as Cr] | 30-day average | ≤ 1 mg/L | all year | 003 |
| Chromium, total [as Cr] | daily maximum | ≤ 2 mg/L | all year | 003 |
| Phenol | daily maximum | ≤ .1 mg/L | all year | 003 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 003 |
| Flow, in conduit or thru treatment plant | daily maximum | 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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