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�� <br /> MW <br />_ 4 <br /> SHP53 Stockton Cleanup Journal <br /> 103 North E Street <br /> 02-24-86 Tank C-14 north and south failed the Petro-i de tank test: <br /> 10-20-86 Triangle removed C-14 north and south and WO-4. <br /> 12-01-86 Kleinfeider proposed to ATS to install 4 soil borings and one monitor well for preliminary <br /> assessment of the horizontal and vertical extent of soil contamination. The MW is to <br /> Provide Information regarding depth to ground water and possibility of ground water <br /> contamination. <br /> 12-79.86 10einfelder installed and sampled 5 soil borings(E 1,2,3,4,5). Borings were to a deptR <br /> of 35'. Tests revealed significant TPH contamination. <br /> 12-17-86 Kleinfelder didn't install proposed MW because significant levels of volatile hydrocarbons <br /> were feur,d. . <br /> 12-29-86 Sample soil borings B 1,2,3,4 5.1 1 <br /> 01-16-87 Kleinfelder installed eleven more soil borings (B 6 thru B 16). <br /> 01-17-87 Kleinfelder converted three borings (B 10, 12, -13) to monitoring wells (MW 1, 2, 3) <br /> respectively. <br /> 09-08-87 LBME notified CRWQCB of intent to excavate contaminated soil starting 9-15-87. , <br /> 09-09-87 LBME installed two monitoring wells(MW 4,5). Work completed on 9-15-87. <br /> e 09-15-87 Excavation of contaminated soil started. <br /> 09-18-87 Pxcavation of contaminated soil completed. Resulting pit was 47'x 25'x 38'deep. <br /> 09-21-87 Sample soil on walls of excavation pit. <br /> 09.31-87 MW 1 &2 were destroyed by excavation of pit. <br /> 09-25-87 LBME sampled MW 3,4, 5. <br /> 1031-87 Baylor's spent 18 hours this month discing soil for aeration. <br /> 11.25-87 LBME sampled MW 3. 5, <br /> 1130-87 Saylor's spent 225 hours this month discing soil for aeration. <br /> 12-20-87 Located wells affec ling ground water gradient. Dei Monte,2000'to the north east has a <br /> 170 hp pump. Californ,a Canners and Growers,3000'to the south west has a 375 hp <br /> pump. These wells are only used during the canning season. <br /> 04-14-86 Saylor's spent 30 hours this last month discing soil for aeration. <br /> 05719-88 Elder Engineering submitted a tank removal plan for C-12 to San Joaquln Heatth Dept.________ <br /> 06.03-88 LBME sent ATS soil test results for soil excavated on 9-18-87. Soil was remediated and <br /> tasted clean at 43 ppm on 5-17-88. ' <br />