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Each boring will be advanced by direct-push methods (GeoprobeTM). Borings will be advanced <br /> to a maximum depth of approximately 0.6 meters (2 feet) BGS. Groundwater is not anticipated <br /> at this shallow depth. The soil samples will be collected from within the top 0.1 meters (0.3 <br /> feet), at 0.3 meters (1 foot), and at 0.6 meter (2 feet) below grade. Soil samples will be collected <br /> using direct push methods retained in acetate sleeves. Soil samples will be labeled as the State <br /> Route, boring number, and sample depth (i.e. where 120-1-0.1 is the sample collected at 0.1 <br /> meters BGS in soil boring 1 along State Route 120). <br /> 4.2.3 Groundwater Sample Collection <br /> Up to three borings will be advanced to a depth of 6 meters (20 feet) BGS for groundwater <br /> sample collection. The borings shall be logged using USCS by an IT geologist under the <br /> supervision of a California Registered Geologist. Soil samples will be collected from within the <br /> top 0.1 meters (0.3 feet), at 0.3 meters (1 foot), and at 0.6 meter (2 feet), and on 0.6-meter (2- <br /> foot) intervals beginning at 1.2 meters (4 feet) BGS. <br /> A groundwater sample will be collected at each boring. The groundwater samples will be <br /> collected from Hydropunch-type groundwater sampling equipment. Groundwater is expected to <br /> be encountered within approximately 6 meters (20 feet) BGS. Soil borings may be drilled deeper <br /> depending on the groundwater conditions. Up to three methods may be used for groundwater <br /> collection and these include the following. <br /> • Dedicated Teflon tubing with a single-ball, stainless steel check valve <br /> • A new disposable polyethylene or Teflon bailer <br /> • A peristaltic pump and new dedicated Teflon tubing <br /> Drilling and sampling procedures are presented in Appendix A. <br /> 4.3 Task 3: Laboratory Analyses <br /> Soil samples will be submitted to Sparger Technologies, Inc., of Sacramento, California, a <br /> California-certified analytical laboratory, for analysis. The analysis of samples will be conducted <br /> in general accordance with the U.S. Environmental Protection Agency (EPA) specified holding <br /> times. The laboratory analyses will be conducted on a standard turn-around basis. <br /> Soil samples from the upper 0.6 meters (2 feet) of each boring will be utilized for the aerially <br /> deposited lead study. The samples will be analyzed for total lead in general accordance with <br /> IT Corporation 4 120Amtin_wkp <br />