PERI: Toxic 100 Index

Dominion Resources Inc.

Rank in Toxic 100: 83
Rank among all TRI companies: 247
Air releases 2010 (lbs): 11,826,494
Incineration transfers 2010 (lbs): 0
Total Air and Incineration Toxic Score 2010: 164,155
Percentage of national total 2010 toxic air and incineration score: 0.042%
EJ: Poor Share: 11.9%
EJ: Minority Share: 40.3%

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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
Nickel and nickel compounds	28,967	0	65,889	40.14%	10.3%	42.8%
Chromium and chromium compounds	1,821	0	33,358	20.32%	12.7%	33.2%
Arsenic and arsenic compounds	617	0	24,327	14.82%	12.4%	41.3%
Cobalt and cobalt compounds	306	0	14,258	8.69%	12.6%	25.2%
Sulfuric acid	1,357,278	0	11,064	6.74%	12.2%	48.2%
Hydrochloric acid	8,671,661	0	10,521	6.41%	14.9%	51.8%
Hydrogen fluoride	1,196,494	0	1,720	1.05%	15.1%	53.5%
Barium and barium compounds	25,128	0	1,437	0.88%	18.3%	61.2%
Manganese and manganese compounds	4,375	0	1,160	0.71%	15.2%	44.4%
Ammonia	464,247	0	126	0.08%	10.2%	42.9%
Lead and lead compounds	1,430	0	110	0.07%	15.1%	53.8%
Polycyclic aromatic compounds	11	0	73	0.04%	10.9%	38.9%
Mercury and mercury compounds	1,056	0	50	0.03%	14.5%	50.8%
Hydrogen cyanide	51,300	0	36	0.02%	18.1%	38.8%
Beryllium and beryllium compounds	14	0	12	0.01%	16.5%	4.3%
Copper and copper compounds	827	0	7	0.00%	17.1%	50.6%
Selenium and selenium compounds	9,104	0	3	0.00%	12.9%	15.8%
Vanadium and vanadium compounds	2,166	0	2	0.00%	15.1%	45.6%
Zinc and zinc compounds	3,160	0	2	0.00%	16.6%	54.6%
Naphthalene	12	0	1	0.00%	10.4%	25.6%
n-Hexane	6,520	0	0	0.00%	7.6%	51.4%
Benzo(g,h,i)perylene	0	0	0	0.00%	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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