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Work Plan for Refined Mine Definition and Management of Floating Product-7500 W 11 th St., Tracy, CA <br /> v <br /> AV <br /> ar <br /> 3 <br /> � f <br /> yg dx <br /> ,s n <br /> Plate 1: Removing Floating Product(LNAPL) from Tank Pit at 7500 W 11th. St., Tracy <br /> Notes: <br /> 1. Vacuum truck operator is seen using a vacuum lance to skim floating product from surface of <br /> groundwater. <br /> 2. Floating product was not released from tanks, but flowed into open pit from the subsurface beneath the <br /> pump island to the west approximately eight hours after the pit was excavated. <br /> 3. Two additional applications of the vacuum extraction procedure implemented over a period of one week <br /> removed a total of 2,000 gallons of floating product and eliminated all LNAPL from the 7500 W 1 1 th <br /> Street property. This remedial action was followed by a rapid fall in the concentrations of components of <br /> fuel hydrocarbons in groundwater in local,down-gradient, water-quality monitoring wells. <br /> - <br /> sic <br />