Noticing Party: 
Three Sisters Ranch Enterprises
 
  Alleged Violators: 
Union Pacific Corporation
USPCI, Inc
 
  Chemicals: 
1,1,2,2-Tetrachloroethane
1,1-Dichloroethane
1,2-Dibromo-3-chloropropane (DBCP)
1,2-Dichloropropane
1,3-Dichloropropene
1,4-Dichloro-2-butene
Benzene
Bromodichloromethane
Bromoform
Carbon disulfide
Chloroform
Ethylene dibromide
Ethylene dichloride (1,2-Dichloroethane)
Methyl bromide, as a structural fumigant
p-Dichlorobenzene
Toluene
Trichloroethylene
Vinyl chloride
Vinyl trichloride (1,1,2-Trichloroethane)
 
  Source: 
Discharge into a presumptive source of drinking water.