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05/06/2003 08:09 FAX 209 9480621 4 PHS EHD <br /> 2004 <br /> k9 KLEINFELDER <br /> the proposed scope of work. Kleinfelder will request that. the drilling subcontractor contact <br /> Underground Service Alert to notify local utilities of our planned activities. <br /> )Field Activities <br /> Septic Tank Excavation <br /> Kleinfelder proposes to direct an approved septic tank subcontractor for the excavation task. The <br /> top of the septic tank will be uncovered and the condition of the tank will be assessed. If a <br /> service port is determined. to be useable a single sludge sample will be obtained from inside the <br /> tank for laboratory analysis. <br /> Soil Borings <br /> KleinfeIder proposes to advance a total of give pushprobes to investigate the subsurface soils near <br /> the septic tank, leach line, and seepage pit. One of probes will be advanced on the western end <br /> of the septic tank near the position of where the flange or transition from the tank to the leach <br /> line to a maximum depth of approximately 15 feet below the ground surface (bgs). Two of soil <br /> borings will be advanced along the leach line, spaced at equal intervals, to a maximum depth of <br /> approximately 7 feet bgs. The final boring will be advanced parallel to the seepage pit to a total <br /> depth of approximately 32 feet bgs. <br /> A total of 4 soil samples will be collected from the septic tank area. The soil samples obtained <br /> from near the septic tank will be collected at 4 feet bgs, 9 feet bgs, 12 feet bgs, and 15 feet bgs to <br /> assess the soil condition adjacent and below the-bottom of the septic tank. The soil samples will <br /> be assessed in the field.for lithology and stored for possible laboratory analysis. <br /> A total of 6 soil samples will be collected from the borings advanced near the leach line_ The <br /> soil samples will be collected at depths of 1, 3 and 7 feet bgs. The soil samples will be assessed <br /> on site for lithology and stored for possible laboratory analysis. <br /> A total of 8 soil samples will be collected from the boring advanced near the seepage pit_ The <br /> soil samples will be collected at approximately 4 foot intervals as an approximate total depth of <br /> 32 feet for lithologic classification and stored for possible laboratory analysis_ <br /> The pushprobes will be continuously advanced in four-foot intervals using a pneumatically <br /> driven steel probe. Soil samples will be obtained by inserting acetate liners into the probe. The <br /> sample probe will be lowered to the desired sampling depth and driven into the soil. Soil <br /> samples will be collected by cutting out the desired sample interval from the acetate liners and <br /> sealing the ends with Teflon sheeting and tight fitting plastic caps. During the advancement of <br /> the probes, soil samples will be collected for lithologic classification and qualitative field <br /> screening with an organic vapor analyzer (OVA). The OVA measures ionizable compounds in <br /> au in parts per million by volume (ppmv). Lithologic classification will be based on the Unified <br /> Soil Classification System (USCS). ^The soil probes will be advanced using a truck mounted <br /> geoprobe rig. The geoprobe utilizes a pneumatically driven stainless steel pushpzobe assembly <br /> 0200 1 PROP.ENV/ST03P162 Page 2 of 6 <br /> Copyright 2003,Kleinfeldcr,Inc. May 5,2003 <br />