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KL E/NFEL DER <br /> \` Bright People.Right Solations. <br /> subsurface assessment. Kleinfelder will prepare a health and safety plan prior to the <br /> actual field assessment. <br /> Task 2 — Advancement of Pushprobes/Laboratory Analyses <br /> The purpose of the pushprobe assessment will be to evaluate petroleum constituents <br /> and CAM 17 metals in shallow soil (surface to approximately 20 feet in depth) where <br /> CIDH piers will be constructed and excess soil cuttings generated between Fresno <br /> Avenue and the BNSF railroad tracks. The selected analyses and sampling depths <br /> herein are based on former discussions with the Regional Water Quality Board <br /> (RWQCB) and from gate acceptance criteria from a local Class II landfill, (if disposal is <br /> deemed necessary). <br /> Kleinfelder is proposing to advance dual casing pushprobes at each bent cap location <br /> (12 total). The probing depth is estimated to be at least 20 feet or extend 10 feet below <br /> first encountered groundwater, which is anticipated to be about 10 feet bgs. The actual <br /> pushprobe locations will also be dependent on access, surface conditions, and potential <br /> interference with subsurface and above-ground utilities. <br /> Pushprobes will be advanced using a pneumatically driven steel probe. Soil samples <br /> will be obtained by inserting a sample barrel, lined with acetate liners, into the ground. <br /> The sample barrel will be lowered to the desired sampling interval and driven into the <br /> soil. The sample liners will be removed and the selected sampling interval will be sealed <br /> with Teflon sheets and plastic end caps. <br /> Soil samples will be collected continuously during the advancement of the pushprobes <br /> at depths ranging from near surface to the proposed maximum depth of approximately <br /> 20 feet bgs. During the advancement of the borings, soil samples will be collected <br /> using a Photo Ionization Detector (PID) for lithologic classification and qualitative field <br /> screening. The PID measures ionizable compounds in air in parts per million by volume <br /> (ppmv). Lithologic classification will be based on the Unified Soil Classification System. <br /> Kleinfelder proposes compositing two soil samples in each of the 12 probes along the <br /> alignment for potential chemical analyses (24 total samples). One composite sample <br /> will be collected above groundwater and one sample composited below groundwater. <br /> Accordingly, we anticipate these two composite soil samples will be collected at <br /> intervals ranging from surface to 10 feet and 10 to 20 feet bgs from each probe. <br /> After collection, the soil samples will be labeled, logged on a chain-of-custody form, and <br /> immediately stored in an iced cooler. The samples will be transported under chain-of- <br /> custody control to Kleinfelder's office and then transported by courier in a chilled <br /> container to a State accredited laboratory to perform the requested analyses. <br /> Kleinfelder is proposing submittal of all composite soil samples (total of 24) during the <br /> pushprobe investigation for the following analyses: <br /> 113961.8.PROP/STO14P0174 Page 2 of 4 February 27, 2014 <br /> Copyright 2014 Kleinfelder <br />