POLLUTION LOCATOR | Toxic Chemical Releases |Pollution Releases Ranked by Noncancer Risk Score

Facility: BLACK HILLS CORP. - NEIL SIMPSON COMPLEX, GILLETTE, WY
From 1998 to 2002, total noncancer risk scores have increased 2252%.
Chemical Name Noncancer Risk Scores
Pounds of toluene-equivalents
MERCURY720,000,000
LEAD27,000,000
COPPER1,900,000
BARIUM COMPOUNDS780,000
VANADIUM190,000
NICKEL150,000
CHROMIUM140,000
MANGANESE120,000
ZINC39,000
HYDROCHLORIC ACID35,000
BENZENE6,900
TOLUENE180
XYLENE (MIXED ISOMERS)6
N-HEXANE2


Note: These rankings do not cover all chemical releases reported to TRI - they only include chemicals that possess risk scores. As a result of data gaps or modeling problems, not all TRI chemicals possess the information required to weight their mass release by toxicity and exposure potential. Dioxin compounds, for example, are not included in these rankings. TRI chemicals that lack risk scores should not be assumed to be safe.