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a <br /> Page 11 TL 686-082-02 <br /> 8 . 2 The following are alternatives that are recommended to <br /> assure that the oil and grease found in the near- <br /> surface soils to not pose a threat to groundwater. <br /> f <br /> 8 . 2 . 1 The backfilled exca ations in the area of the <br /> tank and the associated piping should be <br /> capped with an asphaltic concrete pavement to 1 <br /> rapidly drain surface water away from the <br /> backfilled area. i The asphaltic concrete <br /> pavement should bei designed to support the <br /> anticipated traffic' conditions . <br /> 8 .2. 2 The near-surface soils contaminated with oil { <br /> and grease, located along the piping, should k <br /> be excavated to a depth of four feet. This <br /> does not include the area where the new <br /> transformer storage tank will be located. <br /> The majority of the contamination will be <br /> removed at the time of new construction. The <br /> arrangement of the; new tank on the site is <br /> presented on Drawing No. 5 . <br /> ii <br /> li= <br /> I <br /> L9 . 0 LIMITATIONS <br /> The analyses, conclusions, and recommendations contained in <br /> our report are based', on the site, conditions as they existed at <br /> the time of our investigation, and fu�'rther assume that probes, <br /> such as exploratory borings, are representative of the soil <br /> conditions at the site, i. e. the soil conditions everywhere are } <br /> not significantly different from those disclosed by the probes . <br /> I <br /> If different subsurface conditions from those encountered <br /> during our exploration are observed or, appear to be present, we I <br /> must be advised promptly so that we can review these conditions � <br /> and reconsider our conclusions and recommendations where <br /> L necessary. i <br /> t <br /> ! Fresno Modesto Visalia Bakersfield <br />