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Review for No Further Action - 4 - 1. 15 June 1995 <br /> Major Mart, 1235 East Alpine Ave. "r <br /> Stockton, Yolo County <br /> �? c <br /> In the model, methyl naphthalene was assumed to be distributed throughout the upper 26 feet of <br /> the column. The model did not result in methyl naphthalene reaching ground water. <br /> CONCLUSIONS <br /> During a San Joaquin County TRC meeting in February 1995, we. discussed the benefits of one <br /> more round of sampling because the ground water level haftone,°up. However, at this site, <br /> ground water has been above the well screens since last year. The consultant attempted to lower. <br /> the water in the wells, with limited success. The water was lowered somewhat, but the samples <br /> showed results similar to other sample periods. One more round of samples did not appear to be <br /> useful. Therefore, based on the soil removal, the definition of soil,contamination, and the absence <br /> of TPHg and BTEX contamination in ground water in the last year, no further action is required at <br /> this site. j} <br /> We received a request for concurrence with a no further action determination, from San Joaquin <br /> County staff, on 30 March 1995. <br /> LIST OF ATTACHMENTS <br /> Attachment A Checklist of Required Data for Closure of Underground Tank Sites <br /> Attachment B - Includes a map and soil data from the 1990 tank.removal and 1991 installation <br /> ;e <br /> of MW-1, MW-2, and MW-3. �; <br /> _ Attachment C - Includes a map and soil data from the 19921 tank ;pit excavation, pipeline <br /> removal, and installation of MW-4, MW-5, and MW-6. <br /> Attachment D - Includes maps and soil data from the different stages of the 1993 tank pit <br /> overexcavation. li <br /> Attachment E - Includes a map and soil data from the 1994Yboriri�gs SB-1, SB-2, SB-3, and SB-4. <br /> Attachment F - Includes ground water data from 1991 through 1994. <br /> l 1� <br /> 31, <br /> i <br /> i <br /> I1 G <br /> �1 <br />