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1 <br /> 1 <br /> work to define limits of contamination. <br />' September, 1993 - Workplan submitted by Wm. J. Hunter & Assoc. , <br /> (WJH, ) to place four (4) 30 foot deep soil borings_ Refer to the <br /> PAR, dated January 4, 1994, prepared by WJH, for a copy of that <br />' workplan <br /> October 27 & 28, 199a - work was performed under the direction of <br />' Wm. Hunter, RG, using Spectrum Exploration auger rig & personel. <br /> Refer to the above referenced SAR for a detailed description of <br /> that work. TABLES V. Vi , &- VII show the results of laboratory <br /> analyzes from soil samples taken during the placement of the soil <br />' borings. Those analyzes revealed that ALL samples were either <br /> below detection limits, or within acceptable levels, for Chlori- <br /> nated solvents, (EPA 8010, ) ICAP metals, & TPH-D. BTEX & TPH-G <br />' were below detection limits in all samples except soil boring #2 <br /> at 36' . Refer to PLATES IV V VI & VII for lithologic plots of <br /> those four soil borings. Their locations are shown on PLATE X. <br />' January, 1994 -- A report entitled "PROBLEM ASSESSMENT REPORT <br /> COVERING SOIL CONTAMINATION INVESTIGATION" , was prepared by WJH & <br /> submitted to the San Joaquin County EHD covering the field work <br /> conducted in October, 1993, and discussing the results. Refer to <br /> that document for complete details of that work. <br />' <br /> February 8 1994 - Correspondence from San Joaquin Co. EHD <br /> recommended further assessment and/or re-excavation of the former <br /> waste oil tank site. A copy of that letter is included as <br /> ' EXHIBIT A, <br /> July 21 1994 - A meeting was held at the offices of the San <br /> Joaquin County EHD to discuss what additional work would be <br /> ' required in order to obtain site closure. In attendance were <br /> Stephen Valentine, owner of the property; William Hunter of Wm. <br /> J. Hunter & Associates, (consultant to Mx. Valentine, ) and Steve <br /> ' Sasson & Margaret Lagorio from the County Environmental Health <br /> Division. It was agreed at that meeting that further excavation <br /> was not practical due to space constraints It was further <br /> agreed that a soil boring in the middle of the site of the <br /> ' removed tank would be sufficient to assess possible contamination <br /> beneath the site. <br /> ' August 17 . 1994_ - WJH prepared a workplan to place one (1) <br /> soil boring to a depth of 40' in the center of the site of the <br /> removed waste oil tank. Refer to EXHIBIT B for a copy of <br /> ' that report. <br /> October 1 . 1994 - WJH prepared an addendum to the above workplan <br /> for converting the soil boring into a groundwater monitoring <br /> well. A copy of that addendum is included as EXHIBIT C. <br /> ' 4 <br />