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wgr .wap <br /> 60 <br /> APPENIM A <br /> S1�tizA1tY F SITE AC"TIV1Tl1,S <br /> ARCO Facility No. 6100 <br /> 25775 South Patterson Pass Road <br /> Tracy, California <br /> Date Activity By <br /> 10/31/90 Preconstruction meeting ARCO, Roux, GW <br /> 11/1/90 Begin construction. Excavate soil to GW, Roux <br /> top of USTs. Stockpile soil on Site. <br /> 11/2/90 Existing USTs removed and inspected. GW, SJCPHS, Roux <br /> Existing USTs loaded onto trucks and GW, H & H <br /> transported from Site. Roux <br /> Soil samples collected from stockpiles. <br /> 11/5/90 Began excavation of new UST cavity and GW, Roux <br /> over-excavation of former UST cavity. GW <br /> Stockpiled soil on Site. Roux <br /> Soil samples collected from stockpiles. <br /> 11/6/90 Excavation continued. GW <br /> Soil samples collected from stockpiles. Roux <br /> 11/7/90 Excavation continued. GW <br /> Soil samples collected from bottom and GW, Roux, SJCPHS <br /> sidewalls of tank cavity excavation. <br /> 11/8/90 Excavation continued. GW <br /> 11/13/90 Excavation continued. GW <br /> Soil samples collected from oottom and GW, Roux, SJCPHS <br /> sidewalls of tank cavity excavation. <br /> 11/14/90 Soil samples collected from bottom and GW, Roux, SJCPHS <br /> sidewall tank cavity excavation. <br /> 11/28/90 Product lines excavated and removed. GW <br /> Soil samples collected from produce line trenches. GW, Roux, SJCPHS <br /> Stockpiled soil removed from Site. <br /> 11/29/90 Stockpiled soil removed from Site. Hillard <br /> ROUXASSOCIATES Ya 2 Doc #AR06776W.1.1 <br /> Page 10t <br />