SITE INFORMATION AND CORRESPONDENCE

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Page 4 of 4 1 object to the use of any explosive techniques to accomplish well removal that can be with a rotary drill and bentonite mix grout. The danger of causing shock type earth disturbance can and may have many dangerous and foreseeable side effects and therefore should not be permitted in a commercial and heavy residential neighborhood. Add to this,the fact that the area is of much older construction and you can imagine many possible issues: ` *Gas line issues of ANY KIND.....think about PG &E's recent experiences here. Proper post explosive procedure would dictate.monitoring and follow up over the area for days and weeks as the effects may not be apparent for quite a while by PG&E, Fire Department, City Utility Department, etc. *Follow up will be the responsibility of the regulating and requiring agency, not the "RP." *Water leaks (fast or slow)from fractured piping thereby causing induced erosion holes,foundation destabilization,etc. Follow up and monitoring required. There is plenty of corroded piping in the area. *Effects on electrical systems (especially very old ones)already under stress. *EHD wants their full field staff to be therefor"training" purposes? Are you kidding me? I would not allow anymore human exposure than absolutely required for safety. It does not make sense. Even for a "little" explosion whatever that is. As our Geotechnical Professionals could not dissuade you from requiring this"exercise," I am putting you,the Environmental Health Department,and the County of San Joaquin, on notice, as the "RP" to just some of the risks I can perceive, as a complete non-professional, and the possible liabilities your Agency is herewith assuming. I would appreciate your very thoughtful, but absolutely immediate consideration of the risks involved. Very Sincerely, David Atwater Van De Pol Enterprises, Inc. 11/30/2012