EPA CONDUCTED AN RI/FS AT THE WELL #3 SUBSITE BETWEEN 1989 AND 1992. DURING THE RI/FS, EPA FOUND A SECOND PLUME OF CONTAMINATION -- TCE/TCA PLUME. EPA ISSUED 104(E)S TO VARIOUS PROPERTY OWNERS IN THE AREA AND CONCLUDED THAT THE TCE/TCA COULD BE TRACED TO DUTTON-LAINSON COMPANY. DUTTON-LAINSON AGREED TO PERFORM A SOIL-GAS INVESTIGATION ON ITS PROPERTY AND SUBMIT AN EE/CA PURSUANT TO AN ADMINISTRATIVE ORDER ON CONSENT.