PERI: Toxic 100 Index

Exelon Corp.

Rank in Toxic 100: 75
Rank among all TRI companies: 217
Air releases 2010 (lbs): 2,395,803
Incineration transfers 2010 (lbs): 40
Total Air and Incineration Toxic Score 2010: 193,356
Percentage of national total 2010 toxic air and incineration score: 0.050%
EJ: Poor Share: 14.3%
EJ: Minority Share: 42.7%

Chemicals at facilities displayed below: (display facilities) (display chemicals)
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Facility Name	City	State	Chemical	Original air releases (lbs)	Revised air releases (lbs)	Original incineration transfers (lbs)	Revised 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
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Polycyclic aromatic compounds	4	4	0	0	1,300,000	26	0.01%	10.8%	24.7%	45.9%	32.5%	6.7%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Manganese and manganese compounds	246	246	0	0	70,000	186	0.10%	10.5%	24.2%	42.2%	29.3%	6.3%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Lead and lead compounds	12	94	0	0	18,000	7	0.00%	10.4%	23.9%	35.9%	24.6%	5.2%	**
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Benzo(g,h,i)perylene	0	0	0	0	0	0	0.00%	0.0%	0.0%	0.0%	0.0%	0.0%
CP CRANE GENERATING STATION	BALTIMORE	MD	Sulfuric acid	2,600	2,600	0	0	3,500	67	0.03%	11.3%	25.7%	42.2%	32.0%	4.3%
CP CRANE GENERATING STATION	BALTIMORE	MD	Ammonia	4,200	4,200	0	0	35	3	0.00%	8.2%	21.7%	31.5%	23.9%	3.7%
CP CRANE GENERATING STATION	BALTIMORE	MD	Hydrochloric acid	120,000	120,000	0	0	180	158	0.08%	11.3%	25.7%	42.2%	32.0%	4.4%
CP CRANE GENERATING STATION	BALTIMORE	MD	Barium and barium compounds	660	660	0	0	7,000	68	0.03%	8.7%	22.4%	33.2%	25.2%	3.8%
CP CRANE GENERATING STATION	BALTIMORE	MD	Mercury and mercury compounds	12	12	0	0	12,000	1	0.00%	11.0%	25.4%	41.4%	31.4%	4.3%
CP CRANE GENERATING STATION	BALTIMORE	MD	Manganese and manganese compounds	187	187	0	0	70,000	153	0.08%	9.2%	23.0%	34.9%	26.5%	3.9%
CP CRANE GENERATING STATION	BALTIMORE	MD	Lead and lead compounds	10	31	0	0	18,000	7	0.00%	7.8%	21.2%	30.1%	22.9%	3.6%	**
PERRYMAN GENERATING STATION	BALTIMORE	MD	Polycyclic aromatic compounds	38	38	0	0	1,300,000	293	0.15%	9.8%	23.2%	33.1%	23.3%	4.3%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Mercury and mercury compounds	80	80	0	0	12,000	7	0.00%	10.6%	24.4%	47.6%	33.4%	7.3%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Nickel and nickel compounds	539	539	0	0	930,000	4,027	2.08%	10.6%	24.3%	45.7%	32.0%	6.9%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Selenium and selenium compounds	4,202	4,202	0	0	180	4	0.00%	10.7%	24.6%	46.5%	32.8%	6.9%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Sulfuric acid	310,000	310,000	0	0	3,500	7,681	3.97%	10.6%	24.4%	47.7%	33.5%	7.3%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Ammonia	22,005	22,005	40	40	35	49	0.03%	10.4%	23.8%	34.6%	23.7%	5.0%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Hydrogen fluoride	120,000	120,000	0	0	250	213	0.11%	10.6%	24.4%	47.7%	33.5%	7.3%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Hydrochloric acid	1,500,000	1,500,000	0	0	180	1,913	0.99%	10.6%	24.4%	47.7%	33.5%	7.3%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Zinc and zinc compounds	703	703	0	0	100	1	0.00%	10.6%	24.3%	45.6%	31.9%	6.9%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Copper and copper compounds	183	183	0	0	1,500	3	0.00%	10.5%	24.1%	41.5%	28.9%	6.2%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Cobalt and cobalt compounds	58	58	0	0	17,000,000	10,849	5.61%	10.5%	24.2%	42.0%	29.2%	6.3%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Chromium and chromium compounds	180	180	0	0	43,000,000	14,268	7.38%	10.5%	24.2%	42.7%	29.7%	6.4%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Barium and barium compounds	177	177	0	0	7,000	31	0.02%	10.4%	23.9%	36.8%	25.3%	5.4%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Arsenic and arsenic compounds	86	86	0	0	15,000,000	15,956	8.25%	10.5%	24.1%	40.9%	28.4%	6.1%
PERRYMAN GENERATING STATION	BALTIMORE	MD	Lead and lead compounds	13	13	0	0	18,000	2	0.00%	10.3%	24.1%	34.3%	24.7%	4.4%
BRANDON SHORES & WAGNER COMPLEX	BALTIMORE	MD	Vanadium and vanadium compounds	324	324	0	0	140	1	0.00%	10.5%	24.2%	41.7%	29.0%	6.2%
CP CRANE GENERATING STATION	BALTIMORE	MD	Hydrogen fluoride	34,000	34,000	0	0	250	62	0.03%	11.3%	25.7%	42.2%	32.0%	4.4%
MYSTIC STATION	CHARLESTOWN	MA	Lead and lead compounds	117	117	0	0	18,000	55	0.03%	14.3%	29.0%	36.9%	10.7%	15.6%
MYSTIC STATION	CHARLESTOWN	MA	Ammonia	75,860	75,860	0	0	35	63	0.03%	14.2%	28.8%	36.8%	10.8%	15.3%
MYSTIC STATION	CHARLESTOWN	MA	Polycyclic aromatic compounds	2	2	0	0	1,300,000	58	0.03%	14.6%	29.5%	37.6%	11.0%	15.7%
EXELON CORP CROYDON GENERATING STATION	CROYDON	PA	Naphthalene	8	8	0	0	12,000	2	0.00%	10.5%	24.4%	37.0%	20.9%	9.0%
EXELON CORP CROYDON GENERATING STATION	CROYDON	PA	Polycyclic aromatic compounds	9	9	0	0	1,300,000	235	0.12%	10.5%	24.6%	37.2%	21.1%	9.1%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Arsenic and arsenic compounds	321	321	0	0	15,000,000	87,612	45.31%	16.0%	31.7%	42.7%	26.8%	9.2%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Barium and barium compounds	33	33	0	0	7,000	5	0.00%	15.3%	31.4%	39.6%	25.0%	8.3%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Nickel and nickel compounds	635	635	0	0	930,000	10,746	5.56%	16.0%	31.7%	42.7%	26.8%	9.2%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Mercury and mercury compounds	66	66	0	0	12,000	14	0.01%	16.0%	31.7%	42.7%	26.8%	9.2%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Manganese and manganese compounds	410	410	0	0	70,000	531	0.27%	15.9%	31.7%	42.4%	26.6%	9.1%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Lead and lead compounds	67	67	0	0	18,000	27	0.01%	15.3%	31.3%	39.5%	24.9%	8.3%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Benzo(g,h,i)perylene	0	0	0	0	0	0	0.00%	0.0%	0.0%	0.0%	0.0%	0.0%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Naphthalene	19	19	0	0	12,000	4	0.00%	16.1%	31.9%	42.9%	27.0%	9.2%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Chromium and chromium compounds	210	210	0	0	43,000,000	29,575	15.30%	16.0%	31.7%	42.7%	26.8%	9.2%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Vanadium and vanadium compounds	166	166	0	0	140	0	0.00%	15.8%	31.6%	42.0%	26.4%	9.0%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Zinc and zinc compounds	269	269	0	0	100	0	0.00%	16.0%	31.7%	42.7%	26.8%	9.2%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Hydrochloric acid	50,273	50,273	0	0	180	165	0.09%	16.0%	31.7%	42.7%	26.8%	9.2%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Hydrogen fluoride	5,146	5,146	0	0	250	23	0.01%	16.0%	31.7%	42.7%	26.8%	9.2%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Sulfuric acid	117,705	117,705	0	0	3,500	7,491	3.87%	16.0%	31.7%	42.7%	26.8%	9.2%
EDDYSTONE GENERATING STATION	EDDYSTONE	PA	Polycyclic aromatic compounds	2	2	0	0	1,300,000	34	0.02%	16.5%	32.5%	43.4%	27.8%	9.1%
EXELON CORP SCHUYLKILL GENERATING STATION	PHILADELPHIA	PA	Polycyclic aromatic compounds	0	0	0	0	1,300,000	16	0.01%	21.1%	38.3%	50.4%	31.0%	10.8%
EXELON CORP SCHUYLKILL GENERATING STATION	PHILADELPHIA	PA	Benzo(g,h,i)perylene	0	0	0	0	0	0	0.00%	0.0%	0.0%	0.0%	0.0%	0.0%
EXELON CORP CROMBY GENERATING STATION	PHOENIXVILLE	PA	Benzo(g,h,i)perylene	0	0	0	0	0	0	0.00%	0.0%	0.0%	0.0%	0.0%	0.0%
EXELON CORP CROMBY GENERATING STATION	PHOENIXVILLE	PA	Lead and lead compounds	44	44	0	0	18,000	14	0.01%	11.6%	24.5%	33.1%	18.9%	7.1%
EXELON CORP CROMBY GENERATING STATION	PHOENIXVILLE	PA	Mercury and mercury compounds	16	16	0	0	12,000	3	0.00%	12.2%	25.5%	34.4%	20.0%	7.4%
EXELON CORP CROMBY GENERATING STATION	PHOENIXVILLE	PA	Hydrochloric acid	12,941	12,941	0	0	180	37	0.02%	12.3%	25.6%	34.5%	20.1%	7.5%
EXELON CORP CROMBY GENERATING STATION	PHOENIXVILLE	PA	Polycyclic aromatic compounds	0	0	0	0	1,300,000	4	0.00%	11.6%	24.5%	33.2%	19.1%	7.0%
EXELON CORP CROMBY GENERATING STATION	PHOENIXVILLE	PA	Sulfuric acid	10,861	10,861	0	0	3,500	605	0.31%	12.3%	25.6%	34.5%	20.1%	7.5%

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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