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1. <br /> . .a <br /> i <br /> c' <br /> • <br /> .FIELD WORK PERFORMED <br /> INTRODUCTION <br /> In the SITE ASSESSMENT REPORT by WJH, Attachment # 1 , it was <br /> stated that sufficient data existed to make the determin- <br /> ation that the ground water had not been impacted at this <br /> location. The San Joaquin County Public Health Services, <br /> Environmental Health Division (EHD) did not agree with that <br /> assessment and requested that monitoring wells be 'installed <br /> and that a groundwater testing program be carried out. <br /> Attachment # 2, a work plan for further assessment of <br /> potential groundwater contamination was prepared for the <br /> EHD. The following work documented herein essentially <br /> follows this work plan. Certain small changes were <br /> incorporated when field conditions indicated the need, and <br /> as either suggested by or agreed to by the EHD represen- <br /> tative, Margaret Lagorio, who was on site during much of the <br /> operations. <br /> The actual well locations were changed slightly owing to <br /> power lines etc. They were all located on Raymond Investment <br /> Company property; MW #1 adjacent to the excavation, MW # 2 <br /> and 3 were located in the best feasible locations that could <br /> be selected while remaining on clients property. As mention- <br /> ed in the work plan, it was realized that these wells might <br /> not be in a down-gradient location from the tank removal <br /> site (see Figure 1) . <br /> FIELD WORK-GENERAL, DATA <br /> A cooler chest with a double blue ice supply, laboratory <br /> certified sterile, 2" x 3" brass tubes, plastic caps, Teflon <br /> end cover cloth and chain-of-custody forms were picked up by <br /> Dennis R. Allen, (DRA) at FGL Laboratories, Stockton, CA and <br /> brought to the site on June 18 and 19, 1991 . DRA arrived on <br /> site at 8:30 AM on June 18 Th. On site were Spectrum <br /> Drilling Co. driller, Ted Coffey and Richard Thorpe, <br /> Excavation Contractor. The fenced area around the original <br /> excavation and spoil pile was locked and no one was on site <br /> that had a key. The lock <br /> was <br /> ocut <br /> and <br /> aremoved <br /> land <br /> the nt tv <br /> Spectrum Drilling Aug was <br /> the original excavation, at 1o:00 AM. <br /> Three monitor wells were bored by Spectrum Drilling Co. , on <br /> June 18 and 19, 1991, at the approximate locations shown on <br /> Figure 1. This figure is al--eredl from the one in Attachment <br /> #_ 1 in order to show the proposed locations and the <br /> - -- <br /> locations as drilled...__The-well locations-are-approximate--an ___ _-----_---_ __-_- <br /> were determined by roughly. measuring the distances using a <br /> s <br /> 2 <br />