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GES <br /> . GENESIS ENGINEERING&REDEVELOPMENT <br /> 2.2 Sampling and Logging Techniques <br /> All sampling activities shall conform to state and local regulations and will be overseen by <br /> either a California Registered Geologist or Professional Engineer. The following procedures <br /> will be used for the drilling of each exploratory boring and collection of subsurface soil <br /> samples. <br /> 2.2.1 Sample Collection <br /> Samples will be collected by driving a 6-inch long stainless-steel sampling head into the <br /> undisturbed soil. There are believed to be at least 5 feet between the land surface (at <br /> elevation-5 feet) and the water table (at elevation-10 feet in the monitoring wells along the <br /> eastern side of the Site)at the proposed background sampling location. Farming does disturb <br /> the upper portions of the soil. To diminish the effect of that issue, GE&R will sample the <br /> soil beneath the tilled layer and beneath common rooting depths of the plants farmed. The <br /> minimum sampling depth at each location will be 4 feet. Soil logging by the field geologist <br /> will confirm that there are no longer any roots, or evidence that the soil has been disturbed at <br /> this depth,prior to sample collection. If any evidence of imported fill materials, waste, or <br /> contamination is encountered in any of the borings,then an alternate sampling location will <br /> be selected. <br /> All exploratory boreholes will be abandoned by backfilling each borehole with drill cuttings <br /> from that borehole. <br /> 2.2.2 Subsurface Logging <br /> The Site geologist will log the subsurface conditions encountered in the reconnaissance <br /> borings; recording the information on a Boring Log Form. A copy of the Boring Log form is <br /> included in Attachment A-1. Soil samples shall be logged as follows: <br /> • Descriptions of the soils will be in accordance with the Unified Soil Classification <br /> System(USCS) (ASTM D2488), with color descriptions made using a Munsell <br /> Color Chart <br /> • Soil descriptions follow the name of the predominant particle size <br /> • Percentages of the predominant and secondary sizes shall be estimated <br /> Additional information that will be entered on the Boring Log Form includes: <br /> • Sample identification <br /> • Location in relation to an easily identifiable landmark <br /> • William DePaoli Property 2 of 11 <br /> Sampling and Analysis Plan <br /> February 2012 <br />