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�..�: W� 4 rte'.f", cS,� SA <br /> f ' St : e * y it < <br /> aK3 4 L x. Q T_.wLM�u• i+la�wu{w�d1�w�rs�til cM�e� <br /> ' I <br /> R <br /> April 28, 1988 AGS S'ob No. 03 3012-1 <br /> Fo mer UNOCAL ServicQ Stations ftOCkt0n, California t <br /> in response to these initially dotae'tedi hydroca bore cosctamination .� <br /> levels, further excavation of h* ga=line tank cavity to a t"al <br /> depth of approximately 30 feat was undartaken CA91 r0(Zue:3tcd, by <br /> UNOCAL and approved by the rw-MD. Thud. Jet the approximate dGI:t13 <br /> of the ground-water surface at tgs Gita, and ground weter entered <br /> tree cavity several hours after excavation wram COMP16t8d. <br /> Although levels of remaining hydrooar;aon ca tas jn ation below the � <br /> forFaer tnnks are low (sample S-0406_1�4A, TOZla 1) , that pr'oximi'ty; <br /> to the 7roundl�-water table and levels or ac ht iratiorc remai;l3ng <br /> x. <br /> in the oxcr vation sidewalls im;ily a AQQd for ZUrthdr :3ite { <br /> assessment. With the authorizAtiOrl oZIMOCAL Corporation, <br /> Applied GaoSysteino is currently PrOpariang a prapo661 which � <br /> presents a program for the delineating thO vOrtica l and lateral <br /> extent of contamination. The purpose of the proposed , <br /> investigation would be to assess whwthfAr them p10e9"CO of <br /> i <br /> contaminants has had, or is li.lcoly to ktave, an eavej se i.mpoct on <br /> ;,oval ground-water resourcose ' <br /> I s <br /> LZXITATXONS <br /> 'This report was prepared in accordance with generally acceptcc? <br /> of environnentil geological practice in Calii'orrcia at <br /> t mcy tl.i i.nvesticrazi.on wa€9 perfo%nawd. Th's invcrtn <br /> 9 <br />