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F � REVIEW OF TANK CLOSURE DATA -- Linden Short Stop Linden, California 1-0 Introduction y per the request of Mr. Manuel Santos, ROY F. WESTON, INC. (WESTON) has reviewed the tank closure information and data for the Linden Short Stop site located at 1.8978 E. Highway 26 in Linden, California. This review was conducted in order to assess the need for addition- al site investigation/remediation activities to assure clean w closure of the tank removal site. 2.0 Background The three tanks at the Linden Short Stop were integrity tested in 1986. At this time, no tank leaks were discovered. In 1987, a minor pipeline failure was discovered. This failure was repaired by the property tenant. In 1988, the tank systems were retested and a lack of integrity was encountered. A Piping leak had R, occurred. On January 5, 1989, all three of the tanks were removed. Upon completion of the tank removal, soil samples from beneath the f: tank locations were collected. These samples, according to Mr. L"2Santos, contained petroleum hydrocarbon compounds, so additional excavat'.on was completed in the area of the pipeline leak to remove additional soils. These soils were stockpiled adjacent to the il excavated areas. i After the completion of the additional excavation, soil samples f were collected from the bottom of the excavation area and from the excavated soil stockpiles. A total of nine samples were collected from the excavation area and eight samples were collected from the A soil stockpiles. The sample collection locations are shown on the field sampling logs presented in Appendix A. Each sample collected - was analyzed for Total Petroleum Hydrocarbons (TPH) , Benzene, Toluene, Xylene and Ethylbenzene (BTX&E) , Ethylene dibromide (EDB) , Organolead and Total Lead. These results are presented in tabular form in Table I. The analytical reports are presented in Appendix B. 3.4 Analytical Data Review Each of the sample analytical results were compared with es- tablished regulatory criteria to determine if additional investiga- tion or remediation activities would be required at the site.