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Page 1 of 1 <br /> Harlin Knoll [EH] <br /> From: Elena Manzo [emanzo@somaenv.com] <br /> Sent: Monday, April 23, 2012 11:19 AM <br /> To: Harlin Knoll [EH] <br /> Subject: 30350 S Tracy Blvd, Tracy, CA_ Drilling notification <br /> Attachments: photo.JPG <br /> Dear Mr. Knoll, <br /> As we discussed, SOMA will be advancing the proposed soil borings for above site on April 26 and 27, 2012 <br /> starting at 8 am. Our geologist, Elizabeth Hightower, will be on-site to oversee all drilling activities. Her cell <br /> phone number is 925-330-5235. Last week we had done our USA and utility clearances and it appears that the <br /> site operations had completely demolished and excavated the area in and around the former office and 1,000- <br /> gal gasoline and 1,000 gal diesel tanks. The area has been over excavated to at least 30-40 feet bgs (please see <br /> the attached picture). As such, any residual contamination, if any, is no longer there. Therefore, since it's not <br /> technically feasible we will not be advancing the originally proposed borings DP-1 and DP-2, however we will still <br /> mobilize to advance the proposed borings DP-3 through DP-6. Please do not hesitate to call me if you have any <br /> questions or concerns. <br /> Sincerely, <br /> Elena Manzo <br /> Principal Scientist <br /> SOMA Environmental Engineering, Inc. <br /> fax (925)734-6401 <br /> phone (925)734-6400 <br /> www.somaenv.com <br /> 4127001 <br />