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s <br /> w � <br /> c <br /> KAPREALIAN ENGINEERING, INC. <br /> �( Consulting Engineers <br /> PO BOX 996 • BENICIA, CA 94510 <br /> (707) 746-6915 • (707) 746-6916 • FAX (707) 746-5581 <br /> KEI-P89-1104 .R7 <br /> December 10, 1990 <br /> Unocal Corporation <br /> 2000 Crow Canyon Place, #400 <br /> P.O. Box 5155 <br /> San Ramon, California 94583 <br /> �Q <br /> Attention: Mr. Ron Bock <br /> RE: Preliminary Ground Water Investigation at <br /> Unocal Service Station #5421 �¢`�� <br /> 7303 Pacific Avenue <br /> Stockton, California ' Oy <br /> Dear Mr. Bock: <br /> This report presents the results of soil and ground water inves- <br /> tigation for the referenced site in accordance with Kaprealian <br /> . Engineering, Ines. (KEI) proposal KEI-P89-1104 .P2 dated January <br /> 10, 1990. The purpose of the investigation was to determine the <br /> ground water flow direction, and to begin to determine the degree <br /> and extent of the subsurface soil and ground water contamination at <br /> the site. The scope of the work performed by KEI consisted of the <br /> following: <br /> Coordination with regulatory agencies. <br /> Preparation of Boring Logs for four monitoring wells. <br /> Soil sampling. <br /> Ground water monitoring, purging and sampling. <br /> Laboratory analyses. <br /> Data analysis and report preparation. <br /> SITE DESCRIPTION AND BACKGROUND <br /> The service station site occupies the northwest corner at the <br /> intersection of Pacific Avenue and Willora in Stockton, California. <br /> The vicinity around the site is developed with residential and <br /> light commercial structures. The site is characterized by <br /> topography which slopes very gently toward the southwest and is <br /> located approximately 1, 000 feet southeast of Five Mile Creek. A <br /> Location Map and Site Plans are attached. <br />