Laserfiche WebLink
5 <br /> KAPREALIAN ENGINEERING, INC. <br /> K Consulting Engineers <br /> F.O BOX 996 + BFNICIA. CA 94510 <br /> (707) 746-6915 • (707) 746-6916 • FAX, (707) 746.5581 <br /> KEI-P89-1104 .P2 <br /> January 10, 1990 <br /> Unocal Corporation <br /> 2175 N. California Blvd. , #650 <br /> Walnut Creek, CA 94596 <br /> Attention: Mr. Ron Bock <br /> RE: Work Plan/Proposal <br /> Unocal Service Station #5421 <br /> 7303 Pacific Avenue <br /> Stockton California <br /> INTRODUCTION: <br /> A. Kaprealian Engineering, Inc. (KEI) is pleased to present <br /> this work plan/proposal for the referenced site per our <br /> recommendations in our report dated .January 8, 1990. <br /> B. The service station site occupies the northwest corner at <br /> the intersection of Pacific Avenue and Willora in Stockton, <br /> California. A Location Map and Site Plan are attached. <br /> C/D. This station serves gasoline as well as automobile repairs. <br /> There are currently two 12,000 gallon underground fuel <br /> storage tanks and one 520 gallon waste oil tank on the <br /> facility. Any previous businesses at the site are unknown <br /> to KEI. On November 17, 1989 Kaprealian Engineering, Inc. <br /> (KEI) collected soil samples following the removal of two <br /> fuel storage tanks and one waste oil tank. Four soil <br /> samples, labeled Al, A2, B1 and B2, were taken of native <br /> soil from beneath the fuel tanks at depths of 15. 5 to 16.5 <br /> feet. One soil sample, labeled WO1, was collected from the <br /> native soil beneath the waste oil tank at a depth of 9. 5 <br /> feet. on November 20, 1989 in order to collect samples of <br /> the native soil from the on-site pipe trenches. Four <br /> samples, labeled P1 through P4, were collected from the <br /> product pipe trenches. Two samples, labeled VP1 and VP2 , <br /> were collected from the vapor pipe trenches, and one sample, <br /> labeled WPI, was collected from the waste oil remote fill <br /> pipe trench. In an attempt to remove as much of the <br /> contaminated soil as possible in the fuel tank pit, KEI <br /> returned to the site on December 5, 1989 to observe addi- <br /> tional soil excavation in the area of sample points A2 and <br /> B2 as described in KEI's work plan (KEI-P89-1104 .P1) dated <br /> November 22, 1989. Soil was excavated from the southerly <br /> half of the fuel tank pit to a depth of 26.5 feet. Two soil <br /> samples, labeled A2 (25.5) and B2 (26. 5) , were collected of <br />