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r <br /> I <br /> Introduction <br /> i <br /> This Sampling plan is intended to describe sampling protocol for the former tank pit soil <br /> and water samples as well as excavation stockpiled soils for the former underground <br /> diesel tank located at the subject property, to determine if any further action is required <br /> prior to closure. <br /> History <br /> An approximately 5,000 gallon underground diesel fuel tank had been removed many <br /> years prior. Upon our first visit to the site in February 2004 we observed an open <br /> excavation with what appeared to be groundwater in the bottom of it. We also observed a <br /> soil stockpile of approximately 50 cubic yards, immediately adjacent to the excavation, <br /> that appeared to be the excavation spoils. <br /> Excavation Sampling <br /> One sample will be collected from each sidewall of the excavation using an excavator to s <br /> obtain excavator bucket grab samples. The excavator operator will obtain a scoop of soil <br /> form sidewall locations as directed by a representative of the San Joaquin County Health <br /> Department. A brass tube will then be driven into the scoop to obtain a sample. The tube <br /> will then be sealed and labeled andlaced into an ice chest for transport under chain of <br /> P P <br /> custody control to STL San Fra <br /> ncisco, in Pleasanton, California, a state certified <br /> laboratory. Each sample will be analyzed for TEPH-D and BTEX by EPA Methods 8015- <br /> M and 8260-B respectively. <br /> i <br /> Groundwater Sampling + <br /> A single groundwater sample will be obtained using a peristaltic pump. A length of new <br /> tubing will be placed into groundwater pool and placed into the pump. Samples will be <br /> collected from the discharge. Four 40-mLVOA vials and one 1 liter amber bottle will be <br /> collected , labeled and placed into an ice chest for transport under chain of custody <br /> control to STL San Francisco, in Pleasanton, California, a state certified laboratory. The <br /> sample will be analyzed for TEPH-D and BTEX by EPA Methods 8015-M and 8260-B <br /> respectively. <br /> t <br />