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Gabriel Gonzalez [EH] <br /> From: Dumisani, Kenyatta@Waterboards <Kenyatta.Dumisani@waterboards.ca.gov> <br /> Sent: Wednesday, September 03, 2014 8:52 AM <br /> To: Gabriel Gonzalez [EH] <br /> Subject: Well Abandonment Information: USTCF CLAIM No. 12992 <br /> Hello Ms.Gonzalez, I am reviewing the current 14/15 FY Budget Change Request(BCR),submitted by Advanced <br /> GeoEnvironmental for the abandonment of the remaining deep wells(150 bgs)onsite at 14749 Thornton Road. The BCR <br /> has requested an additional$122,000(in addition to the$27,500 already allotted)for abandoning 9 wells by sonic <br /> drilling,due to past historical issues with CMT well destruction by way of pressure grouting and over drilling(July 02, <br /> 2014 email). <br /> I was hoping to get some clarification on why this method of abandonment(sonic drilling) is required for these wells <br /> that are outside the range of the contamination plume, and if there is potential to limit the sonic drilling depth,to <br /> perhaps the first 10 feet, as a means of lowering the required costs. <br /> Thanks for your time. <br /> Kenyatta Dumisani <br /> Water Resources Control Engineer <br /> Department of Financial Assistance <br /> Underground Storage Tank Cleanup Fund <br /> (916) 341-5824 <br /> t <br />