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i <br /> ,.� From each soil boring, undisturbed soil samples will be collected at five foot intervals into acetate <br /> liners using the Geoprobe sampler. In the field, a geologist will log all soil samples for <br /> hydrogeologic and lithologic characteristics according to the Unified Soil Classification System and <br /> V <br /> screen each sample for any organic vapors using a PID. <br /> ..r At the top of the groundwater-bearing zone in each soil boring, a push driven groundwater sampling <br /> device will be advanced an additional two feet into the formation. When the desired depth is <br /> reached, the sampler will be pulled up approximately four feet to expose the open borehole to an <br /> inner core well screen. Prior to groundwater sampling, groundwater from each of the borings will <br /> be hand purged using a check valve and polyethylene tubing. The volume of groundwater purged <br /> will depend on the strength of groundwater recharge. Following purging, groundwater samples will <br /> be collected through the Geoprobe drive rods using a bailer. <br /> Each of the soil borings will be abandoned using neat cement grout. The boreholes will be filled <br /> with grout from the bottom using a tremie pipe. Fallowing borehole abandonment, the surface <br /> pavement will be restored. <br /> 2.2.2 Laboratory Analysis of Soil and Groundwater Samples <br /> V <br /> Soil and groundwater samples will be properly contained, labeled, preserved and transported under <br /> chain-of-custody documentation to a state of California certified hazardous waste testing laboratory <br /> for analysis. Based on field observations and PID measurements, approximately three soil samples <br /> t.. <br /> per boring and all of the groundwater samples will be submitted for laboratory analysis. Additional <br /> soil samples may be submitted for analysis, if required to adequately characterize the site. Field <br /> observations and sample selection will be reviewed with the PHS/EHD inspector, prior to sample <br /> submittal to the lab. <br /> Each soil and groundwater sample will be analyzed for TPH-as-gasoline, benzene, toluene, <br /> V <br /> ethylbenzene, xylenes (BTEX), MTBE, di-isopropyl ether (DIPE), ethyl tertiary butyl ether (ETBE), <br /> tertiary amyl methyl ether (TAME), and tertiary butanol (TBA) by EPA Method 8260B. The soil <br /> sample with the highest PID reading will also be analyzed for total lead by EPA Method 6010. All <br /> laboratory analyses will be performed on a standard turn-around. <br /> W. <br /> V <br /> 6 <br /> Ir <br />