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INTRODUCTION <br /> This work plan describes the actions Chevron proposes for the Alden <br /> Park area of Tracy, California. It includes detailed information <br /> on running a soil venting field test, removing oil seeps, and <br /> planting trees in the park. This work plan does not cover the <br /> liquids pumping test at the site which is covered in a separate <br /> work plan. <br /> Alden Park is located in the southwest part of Tracy, California <br /> and was formerly the site of a fuel oil storage reservoir. The <br /> site is now occupied by a city park within a residential area (see <br /> Plate 1) . In the spring of 1986 concrete and oil were discovered <br /> by a resident in a hole dug adjacent to the park. Investigations <br /> by Kennedy/Jenks/Chilton (1986) and Dames & Moore (1987) have <br /> located the approximate extents of oil and a concrete slab. The <br /> underground concrete slab was the bottom of the former reservoir. <br /> The results of the site investigations demonstrate that neither the <br /> oily soil nor the groundwater in the area would be classified as <br /> hazardous (according to California Department of Health Services <br /> regulatory criteria) . The Dames & Moore report "Phase II Site <br /> Assessment, Alden Park Area" (September 23 , 1987) contains detailed <br /> results of the site investigation. <br /> Chevron' s proposed actions, as described in this work plan, are <br /> designed to remove the visible signs of oil from the area (oil <br /> seeps) , increase the attractiveness of the park (planting trees) , <br /> evaluate soil venting's effectiveness at Tracy, and gather data <br /> needed to design a full scale soil venting system. The full scale <br /> venting system would remove subsurface oil via biodegradation. <br /> Encl . - Plates 1-4 , 5 (RC 375242) , and 6-11 <br /> Appendix A <br /> List of Attachments <br />