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"I <br /> way tracks at the bottom of the trench dug to remove the pipes <br /> connecting the tank and the warehouse. <br /> Results of the tests are tabulated and discussed in a later <br /> paragraph. <br /> The excavation was later filled with clean soil by the Port of <br /> Stockton. The current appearance of the site is shown in Figures <br /> 6 and 7. <br /> Because some soil contamination was found in the tests results, <br /> which will be discussed later herein, further work was required <br /> to define the problem. <br /> On March 20, 1989 a "Soil Re-Excavation Work Plan" was submitted <br /> to the SJLHD by JTO. <br /> w In a letter dated May 4 , 1989 (App. A-8) , the 531.HD added sev- <br /> eral items that needed to be addressed in the work plan. These <br /> items were •either added to the original or discussed in addendum <br /> pages. The amended plan is given in Appendix A-7. According to <br /> JTO, verbal permission was given to implement the proposed re- <br /> excavation plan. - <br /> The railroad ties between the first excavation and the concrete <br /> loading . dock were removed, with the rails being left in place. <br /> Permission from the various railroads involved had been obtain- <br /> ed. <br /> This area (the pipeline route) was then excavated to an <br /> approximate 12 feet x 10 feet x 8 feet deep (Figs . 4 & 5b). <br /> On July 10, 1989 Canonie Labs coilected. double samples from five <br /> locations in the second excavation described above. All sampling <br /> was witnessed by a representative of the DHS. Quality control <br /> rocedures as described above were followed. The samples were <br /> P <br /> tested for BTXE (prep, 5030) and TEPH (prep. 3550) GCF[f). A dis- <br /> cussion of the results is given under Tests Results herein. <br /> All clean soil was returned to the pit by JTO about two months <br /> after the tests were run. The soil replaced was judged to be <br /> free of contamination by the tests results and inspection by <br /> sight and smell . <br /> On Oct . 3, 1989, the DHS sent a letter to the Port of Stockton <br /> regarding health protection procedures that should be followed <br /> (App. A-12) . <br /> JTO informed Wm. J. Hunter do Associates that a proper response <br /> - -, ------ - - -- -- had ---been--made_answer_ing all concerns expressed by the QHS, but <br /> �= • no written data could be found. <br /> 4 <br /> R"iJ9I�RA1fitA�`tl1�11�11A1� III®'fE�IrflylilllNilO�IIICIiN�r1161111mi6®aIg <br />