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Marathon Petroleum

Rank in Toxic 100 Water: 34
Surface Water releases 2014 (lbs): 539,591
POTW (sewerage plant) transfers 2014 (lbs): 245,506
Pounds released post-treatment 2014 (lbs): 566,890
Total Surface Water and POTW Toxic Hazard 2014: 331,912,380
Percentage of national total 2014 surface water and POTW hazard: 0.128%

Chemicals displayed below: (
display facilities) (display chemicals at facilities)
(Click on column headers to re-sort table: current sort is by pounds of surface water releases.)
(Links on chemical names lead to Scorecard chemical health effects.)
Nitrate compounds 479,391 0 479,391 302,016 0.09%
Methanol 30,273 188,760 45,242 45,242 0.01%
Ammonia 17,181 16,079 23,629 0 0.00%
Zinc and zinc compounds 3,633 61 3,654 12,057 0.00%
Toluene 1,869 6,027 2,173 28,247 0.01%
1,2,4-Trimethylbenzene 1,841 1,117 1,907 3,813,583 1.15%
Xylene (mixed isomers) 1,161 8,256 1,486 7,429 0.00%
Antimony and antimony compounds 844 0 844 2,110,000 0.64%
Naphthalene 630 1,022 671 33,549 0.01%
Nickel and nickel compounds 490 7 494 44,978 0.01%
Benzene 482 3,212 672 36,956,662 11.13%
Phenol 362 0 362 1,195 0.00%
Cumene 245 0 245 2,450 0.00%
Lead and lead compounds 235 6,446 2,589 46,599,498 14.04%
Chromium and chromium compounds 190 0 190 95,000,000 28.62%
Carbon disulfide 188 0 188 1,880 0.00%
Ethylbenzene 180 920 274 301,356 0.09%
Polycyclic aromatic compounds 97 157 109 141,073,923 42.50%
Cobalt and cobalt compounds 84 0 84 0 0.00%
Benzo(g,h,i)perylene 52 0 52 1,032,000 0.31%
Tetrachloroethylene (Perchloroethylene) 37 0 37 77,700 0.02%
n-Hexane 30 14 30 510 0.00%
Styrene 26 0 26 130 0.00%
Propylene (Propene) 20 0 20 24 0.00%
Cyclohexane 16 149 33 19 0.00%
Ethylene 11 0 11 6 0.00%
Molybdenum trioxide 10 0 10 3,800 0.00%
Copper and copper compounds 5 0 5 7,500 0.00%
Cresol (mixed isomers) 5 0 5 100 0.00%
Mercury and mercury compounds 3 81 28 280,526 0.08%
Dioxin and dioxin-like compounds 0 0 0 124,600 0.04%
Hydrogen sulfide 0 9,438 2,133 3,839,378 1.16%
Diethanolamine 0 3,761 299 212,023 0.06%
Formaldehyde 0 0 0 0 0.00%
Hydrogen cyanide 0 0 0 0 0.00%
Phenanthrene 0 0 0 0 0.00%
Biphenyl 0 0 0 0 0.00%
1,3-Butadiene 0 0 0 0 0.00%
Ethylene glycol 0 0 0 0 0.00%
Anthracene 0 0 0 0 0.00%
Carbonyl sulfide 0 0 0 0 0.00%
Manganese and manganese compounds 0 0 0 0 0.00%
Vanadium and vanadium compounds 0 0 0 0 0.00%
Hydrochloric acid 0 0 0 0 0.00%
Hydrogen fluoride 0 0 0 0 0.00%
Sulfuric acid 0 0 0 0 0.00%
Glycol ethers 0 0 0 0 0.00%

Toxic hazard: Pounds of direct releases to surface water and estimated releases from transfers to Publicly Operated Treatment Works (POTW's) reported in the US Environmental Protection Agency's Toxics Release Inventory for the year 2014, weighted by toxicity of chemicals. Weights are from the EPA's Risk-Screening Environmental Indicators project. For details, see technical notes.

Quantity of toxic surface water releases and POTW transfers: Pounds of toxic chemicals released directly to surface water at each TRI facility or transferred off-site to a POTW, without weighting for toxicity or population.

Quantity of toxic post-treatment releases: Pounds of toxic chemicals released directly to surface water plus released after treatment at POTW's.

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