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Lor Xiong [EH] <br />From: Chris Drabandt <cdrabandt@ecmconsults.com> <br />Sent: Friday, December 29, 2017 12:50 PM <br />To: Lor Xiong [EH] <br />Cc: Luis Mercado; 'Tuan Nguyen'; Xavier Green <br />Subject: Well Abandonment Permit - 8010 South Airport Way Stockton <br />Lo r - <br />As requested below is a updated description of the well abandonment proposed at 8010 South Airport Way. <br />ECM will oversee Penecore Drilling, a C-57 licensed driller, abandon the full length of each stainless steel vapor energy <br />generating (VEG) well casing used for the remedial program conducted in November 2016. Wells will be overdrilled for <br />the entirety of the well casing and the entire width of the installed casing (8 -inches). Wells to be abandoned range from <br />25 feet bgs to 35 feet bgs. Open boreholes will be tremie grouted to a minimum of 3 feet bgs and backfilled with clean <br />fill material as appropriate. Soil and well debris wastes will be placed into an onsite roll -off bin for transport and <br />disposal. <br />Please let me know if you have any further questions. <br />Chris Drabandt, P.G. <br />Senior Geologist <br />Direct 916.917.5022 1 Cell 916.284.0029 <br />:ECMConsultants <br />www.ECMConsults.com <br />