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J <br /> KAPREALIAN ENGINEERING, INC. <br /> K Consulting Engineers <br /> PO BOX 996 a BENICIA CA 94510 <br /> (707) 746 6915 • (707) 746 6916 • FAX (707) 746-5581 <br /> KEI-P89-1104 .R1 <br /> January 8, 1990 <br /> Unocal Corporation <br /> 2175 N. California Blvd. , Suite #650 <br /> Walnut Creek, CA 94596 <br /> Attention: Mr. Ron Bock L ' -j t <br /> RE: Soil Sampling Report JAN 2 5 1vC7 <br /> Unocal Service Station #5421 ENVIRONMENTAL HEALTH <br /> 7303 Pacific Avenue PERMIT/SERVICES <br /> Stockton California <br /> Dear Mr. Bock: <br /> This report summarizes the soil sampling performed by Kaprealian <br /> Engineering, Inc. (KEI) at the referenced site. All work was <br /> performed in compliance with the guidelines established by the <br /> Regional Water Quality Control Board (RWQCB) , and San Joaquan <br /> County Public Health Services. <br /> The scope of the work performed by KEI consisted of the follow- <br /> ing: <br /> Coordination with regulatory agencies. <br /> Collection of samples of native soil from beneath the <br /> fuel and waste oil tanks, from the fuel tank pit <br /> sidewalls, and from the piping trenches. <br /> Collection of a water sample from the on-site domestic <br /> well. <br /> Delivery of samples, including proper Chain of Custody <br /> documentation, to a certified analytical laboratory. <br /> Technical review of field data and laboratory analyses, <br /> and preparation of this report. <br /> SITE DESCRIPTION AND BACKGROUND <br /> The subject site is presently used as a gasoline station. Site <br /> vicinity and site descriptions are shown on the attached sketch. <br /> No leaks or previous subsurface work performed at the site are <br /> known to KEI . <br />