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Good morning Tim, <br /> What is the status of your plans to destroy MW-7 through MW-15? <br /> Thank you, <br /> Gabe <br /> From: Gabriel Gonzalez [EH] <br /> Sent: Wednesday, June 04, 2014 8:10 AM <br /> To: Tim Cuellar' <br /> Cc: Adrienne Ellsaesser [EH] <br /> Subject: 14749 Thornton Road Well Destruction Work Plan Addendum <br /> Good morning Tim, <br /> I have reviewed your 14749 Thornton Road Well Destruction Work Plan Addendum dated May 9, 2014. 1 spoke with my <br /> supervisor,Adrienne Ellsaesser, regarding the destruction of CMT wells MW-7 through MW-15, and received the <br /> following information: <br /> 1. Regarding MW-7 through MW-10, pressure grouting will not be successful on CMT wells.Over drilling a CMT <br /> well has never been successful. The drillbit becomes entangled with the CMT casing within the first 20 feet, <br /> halting further destruction of the well. In a few cases the bit was permanently lost in the borehole. Please <br /> provide us with an alternative method for destroying these wells.Aside from the detonation over-drill <br /> technique, sonic over-drilling has been successful in the past for CMT well destruction. <br /> 2. Regarding MW-11 through MW-15,grouting the chambers of the CMT wells, prior to detonation with 50-grain <br /> special wire explosive, is not necessary. <br /> If you have any questions, please direct them to Adrienne Ellsaesser via telephone (408)468-0343 or email <br /> AEI[saesser@secehd.com <br /> Sincerely, <br /> Gabriel Gonzalez <br /> 4 <br />