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{ <br /> Page 3 of 4 <br /> Ld <br /> I have been present at over 100 well destructions that use detonation cord and explosive charges that produce <br /> blasts of higher levels of energy then will be experienced with 100 grains of detonation cord proposed for your <br /> site. With grout already placed in the well at your site,the grout will absorb and muffle the impact keeping the <br /> energy of the blast contained in the well to best cause the well to break apart, when the detonation takes place. <br /> The overall impact of the blast is very insignificant.The explosives used at your site will produce energy that will <br /> extend not more than ten feet out from the center of the borehole, according to the explosive expert. I doubt <br /> you will even notice that the line was exploded. <br /> At the destructions I have witnessed that use detonation cord and explosive charges, the most I have felt is a <br /> thump at my feet. These destruction events have taken place within city limits near homes and businesses, <br /> inside a building, within five feet of the footings of a building,within five feet of very old and large water lines at <br /> a prison that the State had similar concerns, as you. The destructions went off without any adverse effects or <br /> damage to these structures. <br /> Unfortunately, the CMT well at your site cannot be drilled out. The material does not cut. It stretches and pulls <br /> like taffy. Hence why explosives are being required to cut the casing so it can be drilled out.The training is for <br /> the best method to destroy a CMT well. <br /> This is the first I have heard that your consultant has any concerns with using explosives. We used this same <br /> method on a CMT well at an active gas station this past summer without incident. I believe they were involved. <br /> Please call me so I may explain the process to you and address your concerns. <br /> Sincerely, <br /> Adrienne <br /> Adrienne Ellsaesser, REHS <br /> Program Coordinator <br /> San Joaquin County <br /> Environmental Health Department <br /> 1868 East Hazelton Avenue <br /> Stockton , CA 95205 <br /> Ph (209) 468-0343 <br /> Fax (209) 468-0341 <br /> aellsaesser@s icehd.com <br /> From: David Atwater fmailto;dbatwater vandepol.us] <br /> Sent: Thursday, November 15, 2012 12:44 PM <br /> To: Adrienne Ellsaesser [EH]; Nuel Henderson [EH] <br /> Cc: George V. Hartmann; tcuellar adv eoenv.com; rmart (-@advgeoenv.com; wlittle(&adygeoenv.com <br /> Subject: Pacific Avenue Explosive Well Destruction <br /> Dear Ms Ellsaesser and Mr Henderson, <br /> I am the"Responsible Party," RP, of the 2402 Pacific Avenue UST Clean-Up Fund Remediation Project. I have <br /> been made aware of a certain explosive well destruction technique required for this project next week,over the <br /> very strong objections of our professional consulting firm,Advanced GeoEnvironmental. This is an extreemly <br /> rare procedure and I can guess why that is. <br /> 11/30/2012 <br />