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I <br /> MPDS-UN5098-10 <br /> April 17 , 1996 <br /> • Page 2 <br /> executed Chain of Custody documentation The analytical results of the <br /> ground water samples collected from the Unocal wells to date are summa- <br /> rized in Table 3 The concentrations of Total Petroleum Hydrocarbons <br /> (TPH) as gasoline and benzene detected in the ground water samples <br /> collected from the Unocal wells this quarter are shown on the attached <br /> Figure 2 Copies of the laboratory analytical results and the Chain of <br /> Custody documentation for the Unocal wells are attached to this report <br /> LIMITATIONS <br /> Environmental changes, either naturally-occurring or artificially- <br /> induced, may cause changes in ground water levels and flow paths, <br /> thereby changing the extent and concentration of any contaminants . <br /> DISTRIBUTION <br /> A copy of this report should be sent to the San Joaquin County Public <br /> Health Services, to the Regional Water Quality Control Board, Central <br /> Valley Region, and to Mr Frank Muramoto of Environmental Audit , Inc <br /> If you have any questions regarding this report , please do not hesitate <br /> to call Mr Joel G. Greger at (510) 602-5120 <br /> • Sincerely, <br /> MPDS Services, Inc . <br /> /7 , <br /> Haig (Gary) TeD Irian D (a�'G <br /> Senior Staff Geologist <br /> r <br /> �0'L G G4CGER <br /> No EG 1633 <br /> CE;TiI I,y <br /> Joel G Greger, C E G 't Eric,IOIL-UP fiG <br /> Senior Engineering Geologist ,j GEGLOC-6T' V <br /> License No EG 1633 `0 <br /> Exp Date 8/31/96 <br /> /bp <br /> Attachments Tables 1 through 4 <br /> Location Map <br /> Figures 1 & 2 <br /> Laboratory Analyses <br /> Chain of Custody documentation <br /> . cc cc Mr Mark W Boyd, Kaprealian Engineering, Inc <br /> i <br />