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07/09/1998 16:17 2813628381 EPI PAGE 02 <br /> ENVIRONMENTAL PERFORMANCE, INC. <br /> A Strategic FnvironmentarManagement Company <br /> July 9, 1998 <br /> Ms. Margaret Lagodo <br /> San Joaquin County PHS-EHD <br /> 304 E. Weber Street, Third Floor <br /> Stockton, CA 95202 <br /> Dear Margaret: <br /> Thanks for your call earlier this afternoon. The following are the details of the soil <br /> borings to be conducted at 3632 Duck Creek Drive in Stockton. The purpose of the <br /> borings are strictly for due diligence purposes. Our client, the potential purchaser of <br /> the company operated on the site, has contracted us to determine whether there has <br /> been any impact to the subsurface from the current or past operations. We do these <br /> limited invasive work routinely as part of our due diligence process. <br /> The soil borings will be advanced using a hollow-stem auger. All drilling equipment will <br /> be steam cleaned prior to drilling to prevent any borehole contamination. Soil samples <br /> will be collected from selected intervals during the soil boring installation using a <br /> stainless steel, split-spoon sampling device. After describing the lithology, the soil <br /> samples will be split for laboratory analysis. Should groundwater be encountered, a <br /> sample will be taken as well for analysis. The bore hole will be filled with the native <br /> material and then grouted using standard grouting procedure. <br /> Soil samples selected for analysis will be shipped to a laboratory. These samples will <br /> be analyzed for total petroleum hydrocarbon, PAHs (EPA method 8270) and VOCs <br /> (EPA method 8260). The purpose of these analyses is to determine if there is any <br /> historical contamination in the soil related to the use of petroleum hydrocarbons or <br /> organic solvents. <br /> I hope the above description details the activities proposed in our permit application <br /> We appreciate your assistance in this matter. Should you have any questions, please <br /> do not hesitate to contact me at (281) 362-8377. <br /> SincerelyL'p, <br /> Sach Prasad <br /> 2202 Timberloch Place,Suite 250 4 The Woodlands,Texas 77380 <br /> Phone.(713)362-8377 e Fax:pi 3)362-8381 0 E-Mail:ep4phoemx.net <br />