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UST Closure Report <br /> Sharpe Defense Distribution egion West <br /> Lathrop, California <br /> tr <br /> br r <br /> Photograph 16: Placing native silty sand in UST excavation to form third lift of fill in bottom of UST <br /> excavation(above drain rock and lift of aggregate base fill). The sand was fill that had been removed <br /> from the excavation and temporarily stored in stockpile SPD. View of northern end of UST excavation <br /> looking north-northeast(toward Building 330). <br /> r 1 . <br /> Photograph 17: Spreading the first lift of native silty sand from stockpile SPD in UST excavation above <br /> a 20-inch thick lift of aggregate base fill and a basal lift of drain rock. Depth(compacted) of lift of sand <br /> is about 85 to 65 inches below surface grade. View looking northeasterly toward Building 330. <br /> N:\Projects\3546\Reports\Photo captions.doc <br />