PERI: Toxic 100 Index

HollyFrontier Corp.

Rank in Toxic 100: 96
Rank among all TRI companies: 320
Air releases 2010 (lbs): 1,163,747
Incineration transfers 2010 (lbs): 27,883
Total Air and Incineration Toxic Score 2010: 97,558
Percentage of national total 2010 toxic air and incineration score: 0.025%
EJ: Poor Share: 19.1%
EJ: Minority Share: 32.1%

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Chemical	Air releases (lbs)	Incineration transfers (lbs)	Toxic Score (quantity x exposure x toxicity x population)	Percent of total company score	EJ: Poor Share	EJ: Minority Share	Rv
1,2,4-Trimethylbenzene	18,094	73	199	0.20%	12.7%	29.8%
1,3-Butadiene	516	0	3,707	3.80%	6.6%	14.0%
Ammonia	108,353	0	104	0.11%	22.5%	35.4%
Anthracene	7	0	0	0.00%	28.7%	46.2%
Benzene	87,993	266	75,228	77.11%	18.3%	30.0%
Benzo(g,h,i)perylene	3	0	0	0.00%	0.0%	0.0%
Biphenyl	459	0	0	0.00%	29.7%	45.1%
Carbon disulfide	770	0	0	0.00%	28.0%	44.4%
Carbonyl sulfide	2,910	0	23	0.02%	28.5%	45.2%
Cresol (mixed isomers)	530	13,000	0	0.00%	12.8%	13.5%
Cumene	4,522	1	0	0.00%	26.2%	49.0%
Cyclohexane	43,288	42	1	0.00%	15.4%	29.1%
Ethylbenzene	43,103	154	814	0.83%	26.4%	42.2%
Ethylene	46,568	0	1	0.00%	12.5%	22.8%
Hydrochloric acid	25,058	0	49	0.05%	27.9%	46.7%
Hydrogen fluoride	915	0	17	0.02%	9.2%	20.8%
Lead and lead compounds	65	0	40	0.04%	19.0%	31.7%
Mercury and mercury compounds	55	0	15	0.01%	22.3%	38.4%
Methanol	3,373	0	0	0.00%	10.4%	16.9%
Molybdenum trioxide	0	69	0	0.00%	0.0%	0.0%
n-Hexane	172,074	15	20	0.02%	15.4%	28.5%
Naphthalene	5,311	10,994	1,652	1.69%	16.2%	29.1%
Phenanthrene	355	0	0	0.00%	0.0%	0.0%
Phenol	680	0	0	0.00%	0.0%	0.0%
Polycyclic aromatic compounds	106	0	2,749	2.82%	24.3%	42.0%
Propylene (Propene)	94,611	0	4	0.00%	10.9%	20.9%
Styrene	548	0	0	0.00%	30.2%	45.4%
Sulfuric acid	241,895	0	12,609	12.92%	26.2%	47.5%
Tetrachloroethylene (Perchloroethylene)	291	0	145	0.15%	28.6%	45.7%
Toluene	154,186	441	2	0.00%	19.7%	32.4%
Trichloroethylene	140	0	48	0.05%	12.0%	11.3%
Xylene (mixed isomers)	97,559	2,828	74	0.08%	19.0%	34.1%
Zinc and zinc compounds	9,408	0	59	0.06%	39.4%	51.9%

For explanations of most columns above, including the EJ Shares, see the technical notes.

For the Rv (revisions) column,
* indicates that the record contains one or more chemicals at facilities whose TRI air releases or incineration transfers for 2010 were revised downwards since 2010, and whose hazard and score have been adjusted accordingly.
** indicates one or more chemicals at facilities whose quantities were revised upwards, or both upwards and downwards. Chemicals revised upwards had their pounds adjusted, but not their score.
*** indicates that the RSEI microdata do not match the public RSEI data.

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