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)	Toxicity Weight	Toxic Score (quantity x exposure x toxicity x population)	Percent of total company score	EJ: Poor Share	EJ: Near Poor Share	EJ: Minority Share	EJ: Black Share	EJ: Hispanic Share	Rv
Polycyclic aromatic compounds	106	0	1,300,000	2,749	2.82%	24.3%	44.9%	42.0%	17.0%	13.8%
1,3-Butadiene	516	0	110,000	3,707	3.80%	6.6%	23.0%	14.0%	1.0%	8.2%
Benzene	87,993	266	28,000	75,228	77.11%	18.3%	37.6%	30.0%	9.5%	12.4%
Tetrachloroethylene (Perchloroethylene)	291	0	21,000	145	0.15%	28.6%	49.5%	45.7%	21.1%	11.3%
Lead and lead compounds	65	0	18,000	40	0.04%	19.0%	37.8%	31.7%	11.6%	10.9%
Trichloroethylene	140	0	15,000	48	0.05%	12.0%	38.2%	11.3%	1.6%	5.2%
Molybdenum trioxide	0	69	15,000	0	0.00%	0.0%	0.0%	0.0%	0.0%	0.0%
Naphthalene	5,311	10,994	12,000	1,652	1.69%	16.2%	35.5%	29.1%	7.2%	14.7%
Mercury and mercury compounds	55	0	12,000	15	0.01%	22.3%	42.9%	38.4%	15.9%	11.6%
Sulfuric acid	241,895	0	3,500	12,609	12.92%	26.2%	48.2%	47.5%	23.5%	10.7%
Ethylbenzene	43,103	154	890	814	0.83%	26.4%	46.1%	42.2%	14.8%	18.0%
1,2,4-Trimethylbenzene	18,094	73	580	199	0.20%	12.7%	31.4%	29.8%	4.6%	19.0%
Carbonyl sulfide	2,910	0	290	23	0.02%	28.5%	49.4%	45.2%	21.3%	10.6%
Hydrogen fluoride	915	0	250	17	0.02%	9.2%	27.4%	20.8%	1.3%	14.3%
Hydrochloric acid	25,058	0	180	49	0.05%	27.9%	49.0%	46.7%	19.6%	14.7%
Zinc and zinc compounds	9,408	0	100	59	0.06%	39.4%	58.5%	51.9%	26.3%	13.0%
Xylene (mixed isomers)	97,559	2,828	35	74	0.08%	19.0%	38.6%	34.1%	9.2%	16.8%
Ammonia	108,353	0	35	104	0.11%	22.5%	42.6%	35.4%	13.6%	11.2%
Biphenyl	459	0	20	0	0.00%	29.7%	50.5%	45.1%	19.3%	12.1%
Cumene	4,522	1	9	0	0.00%	26.2%	47.5%	49.0%	13.7%	25.6%
Cresol (mixed isomers)	530	13,000	6	0	0.00%	12.8%	39.1%	13.5%	2.1%	6.8%
Carbon disulfide	770	0	5	0	0.00%	28.0%	48.7%	44.4%	20.7%	10.6%
n-Hexane	172,074	15	5	20	0.02%	15.4%	34.9%	28.5%	6.7%	14.6%
Styrene	548	0	4	0	0.00%	30.2%	51.0%	45.4%	19.2%	12.6%
Anthracene	7	0	3	0	0.00%	28.7%	49.6%	46.2%	20.7%	12.6%
Propylene (Propene)	94,611	0	1	4	0.00%	10.9%	30.3%	20.9%	2.7%	12.6%
Methanol	3,373	0	1	0	0.00%	10.4%	31.8%	16.9%	1.5%	10.4%
Toluene	154,186	441	1	2	0.00%	19.7%	39.4%	32.4%	10.1%	14.2%
Cyclohexane	43,288	42	1	1	0.00%	15.4%	35.8%	29.1%	6.5%	15.5%
Ethylene	46,568	0	1	1	0.00%	12.5%	32.9%	22.8%	3.8%	13.1%
Phenanthrene	355	0	0	0	0.00%	0.0%	0.0%	0.0%	0.0%	0.0%
Phenol	680	0	0	0	0.00%	0.0%	0.0%	0.0%	0.0%	0.0%
Benzo(g,h,i)perylene	3	0	0	0	0.00%	0.0%	0.0%	0.0%	0.0%	0.0%

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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