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Fab-27-03 04:24pm From- T-877 P 01/02 F-148 <br /> V <br /> n <br /> Am A Itnviromenral <br /> � WL%I Assva:Mec <br /> I <br /> February 27,2003 i <br /> Ms. Margaret Lagorio <br /> San Joaquin County Public Health Services <br /> Environmental Health Division <br /> 304 East Weber Street <br /> Stockton, California 95202 <br /> Subject: Workplan for Soil Borings <br /> Lazo Coal acid Iron-California Co.,Inc. <br /> 1520 Eust Lathrop,Lathrop,California <br /> Dear Ms.Lagorio: <br /> Environmental Science Associates(ESA)has developed this workplan to conduct a soil assessment at 1520 <br /> East Lathrop,Lathrop,California(referred to herein as the"site"). The site is presently owned and occupied <br /> by Laro Coal and Iron-California Co.,Inc and is the proposed location for a South San Joaquin Irrigation <br /> District pump station and water tank. The purpose of this assessment is to obtain soil data through the <br /> installation of soil borings and collection of soil samples. As shown on figure 1,ESA proposes to advance <br /> five(5)borings at the site. The exact boring locations may vary and will depend on potential access <br /> restrictions and observed`field conditions. <br /> Soil borings will be advanced to approximately 6 to 7 feet below ground surface(bgs)using a 3-inch or 6- <br /> inch hand auger. A soil sample will then be collected from each soil boring using a hand-operated drive- <br /> sampler. Samples will be collected in a metal sleeve from the base of each boring. Following collection of <br /> soil samples,borings will be backfilled from the bottom of the boring to the ground surface with a grout <br /> mixture consisting of 95%Portland cement and 5%bentonite. Soil samples will then be placed in cool <br /> storage prior to transportation to a state-certified analytical laboratory for chemical analyses. <br /> If you require additional information or have questions,please call Ms.Crystal Stech at(916) 564.4500 or <br /> Mr.Pete Hudson at(415)696.590 <br /> Since/udson <br /> 7 <br /> pe r <br /> cc: Crystal Stech,ESA Sacramento <br /> i <br /> i <br /> 225 Bush Stm ,5uicr 1700 94104 (415)896-5900 (nx 89&0531 email csx.cf��sarrac.com <br /> Ji <br />