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Santa Fe Railway <br /> Stockton Mechanical Facility <br /> 801 Diamond Street <br /> SITE CODE: 1076 <br /> 1112190 A 25,000; gallon diesel tank is removed today. Results of sampling analyses from <br /> tank removal are 5100 parts per million (ppm) total petroleum hydrocarbons as <br /> diesel (TPH-d) for this tank (tank 2). <br /> 11/7190 Tank #3 ::a 10,000 gallon Waste Oil/Water tank is removed today. Results of <br /> 1. <br /> sampling analyses from the tank removal are non detectable for TPH-D. <br /> 11/8/90 Site placed in LOP program. <br /> 11/09/90 Over excavation of tank 2 conducted today to a depth of 20 feet. Analytical <br /> results indicate one area that requires re-excavation. <br /> Over excavation of the remote fill area of tank 2 to a depth of 3 feet. Analytical <br /> results indicate area requires re-excavation. <br /> Results of additional sampling of the Tank 3 excavation, conducted today, due to <br /> the presence of a lens of soil which appears to be contaminated, indicates <br /> additional remediation is required. <br /> 11/15/90 Tank 2 re-excavation conducted today to a depth of 13 feet. Analytical results of <br /> sampling:indicate no further remediation required. <br /> a <br /> Overexcavation of remote fill area to 4 feet. Analytical results indicate area <br /> requires re-excavation. <br /> 11/21/90 Former track pan and excavated to a depth of 4 feet and sampled. Analytical <br /> results of,sampling indicate one area that requires re excavation. <br /> 11/27/90 Former inspection pit area excavated to a depth of 6 feet and sampled. Analytical <br /> results of;sampling indicate re-excavation of one area. <br /> Remote fill re-excavated to 6 feet and sampled. Analytical results indicate further <br /> excavation unnecessary. <br /> 11/28/90 Trenching and sampling on the north and south side of the sand tower to a depth <br /> of 3 feet conducted today. Results of analysis indicate additional contamination <br /> in the north trench. <br />