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f ! 13 March 2012 <br /> Michael N. Oliphant - 2 - <br /> 990 Beechnut, Tracy <br /> AMEC's Workplan proposes the following: <br /> • One boring at/near the original boring location and three additional borings around the first one. <br /> Samples will be collected at depths of 1.5, 4, 6.5, and 9 feet bgs and submitted for analysis. <br /> • A deeper sample from a depth of about 12 feet bgs will be obtained for comparison to the <br /> original sample that previously reported 21,000 mg/kg TPHc at the same approximate depth. <br /> • Soil samples will be submitted for analysis of TPHc, and benzene, toluene, ethylbenzene, and <br /> xylenes (BTEX). <br /> • A summary report will be provided to present the findings of analytical results. <br /> • Based on the investigative findings, additional borings/sampling may be proposed, a report of <br /> findings will be prepared and an updated SLRA completed that incorporates the findings of the <br /> proposed drilling and sampling. <br /> Based on my review, I concur with the investigative activities proposed in the Workplan. <br />