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> (MtBE) plume, San Joaquin County Public Health Services-Environmental <br /> >Health <br /> >Division and the Central Valley Regional Water Quality Control Board <br /> would <br /> >also require decommissioning. <br /> >• In preparation for decommissioning, a permit was obtained and a <br /> contract <br /> >was arranged to remove the pump from the well. This was implemented <br /> on <br /> >January 10, 2000. The plan had been to remove the pump, inspect the <br /> well, <br /> >write a work plan for the County, and decommission the well within the <br /> >following week. <br /> >• At the time of the pump removal, the County inspector strongly <br /> >recommended <br /> >that the well be developed to clarify the water and then that a video <br /> log <br /> >be <br /> >recorded in the well. The inspector stated that he would require that <br /> the <br /> >well casing be perforated or overdrilled in order to pass inspection. <br /> The <br /> >video log would show whether perforation could potentially risk well <br /> >collapse, depending on the integrity of the well. <br /> >• After discussions with Nestle regarding these requirements and <br /> >recommendations, during the period from February 2000 to June 2000, <br /> the <br /> >newly assigned IT Corporation project hydrogeologist researched the <br /> methods <br /> >that were available in a limited access area to perforate or overdrill <br /> the <br /> >well without having to remove the garage roof. IT also determined the <br /> need <br /> >for well development and the relationship of the perforation methods <br /> to the <br /> >risk of well collapse. After discussions with numerous drillers, <br /> >geologists, and well shooters, and evaluation of the four potential <br /> >techniques that were developed to decommission the well, IT concluded <br /> that <br /> >the shot string approach was one of only two feasible methods <br /> acceptable to <br /> >the regulatory agencies, and would be the most cost-effective method, <br /> as <br /> >long as the video log indicated well integrity. Based on water <br /> quality <br /> >results in the well, IT also determined that well development would <br /> not be <br /> >required for video logging. <br /> >• IT prepared a budget for implementation of this work in June 2000 <br /> and was <br /> >authorized by Nestle to complete the work in late July 2000. <br /> >• During August 2000, video logging of the well was completed and IT <br />