Document QJa941mdMz9o1yrKv5vq980v8

Environmental Health Associates, Inc. T.R. Torkelson, Sc.D. Toxicology/Medical Liaison Health & Environmental Sciences 1803 Building Dow Chemical U.S.A. Midland, Michigan 48640 August 17, 1982 Dear Dr. Torkelson: Enclosed please find a copy of the signed confidentiality agreement between Dow and EHA for the Vinyl Chloride Study. Item No. 4 has been modified per our telephone conversation. I want to assure you that these procedures will be followed by our team members to maintain the confidentiality of Dow employee records. Si: ' , OW/ss Enclosure Otto Wong, Sc'.D., F.A.C.E. Senior Epidemiologist/ Biostatistician R&S 142495 2150 Shattuck Ave. Suite 414 Berkeley, CA 94704 (415) 548-1888