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MPDS-UN0187-01 <br /> September 13 , 1994 <br /> Page 2 <br /> i <br /> date are summarized in Table 3 The concentrations of TPH as gasoline <br /> and benzene detected in the ground water samples collected this quarter <br /> are shown on the attached Figure 2 Copies of the laboratory analyti- <br /> cal results and the Chain of Custody documentation are attached to this <br /> report <br /> LIMITATIONS <br /> Environmental changes, either naturally-occurring or artificially- <br /> i-nduced, 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 Mr Michael M Collins, San <br /> Joaquin County Public Health Services, and Ms Elizabeth Thayer of the <br /> Regional Water Quality Control Board, Central Valley Region <br /> If you have any questions regarding this report , please do not hesitate <br /> to call at (510) 602-5120 <br /> Sincerely, <br /> MPDS Services, Inc <br /> Sarkis arkarian <br /> Sta Engineer <br /> Joel G Greger, C E G <br /> Senior Engineering Geologist -CA <br /> License No. EG 1633 <br /> Exp Date 8/31/96 <br /> /bp <br /> Attachments Tables 1, 2 & 3 <br /> Location Map <br /> Figures 1 & 2 <br /> Laboratory Analyses <br /> Chain of Custody documentation <br /> cc Mr Stephen J Carter, GeoStrategies, Inc <br />