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1 <br /> KEI-P89-1104 .QR7 <br /> July 19 , 1993 <br /> Page 3 <br /> DISCUSSION AND RECOMMENDATIONS <br /> Based on the analytical results for the ground water samples <br /> collected and evaluated to date, and no evidence of free product or <br /> sheen in any of the wells, KEI recommends the continuation of the <br /> current quarterly monitoring and semi-annual sampling program of <br /> the existing wells. <br /> DISTRIBUTION <br /> A copy of this report should be sent to Mr. Harlin Knoll of the San <br /> Joaquin County Public Health Services Department, and to the <br /> Regional Water Quality Control Board, Central Valley Region. <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 /> our studies assume that the field and laboratory data are reason- <br /> ably representative of the site as a whole, and assume that subsur- <br /> face conditions are reasonably conducive to interpolation and <br /> extrapolation. <br /> The results of this study are based on the data obtained from the <br /> field and laboratory analyses obtained from a state-certified <br /> laboratory. We have analyzed these data using what we believe to <br /> be currently applicable engineering techniques and principles in <br /> the Northern California region. We make no warranty, either <br /> expressed or implied, regarding the above, including laboratory <br /> analyses, except that our services have been performed in accor- <br /> dance with generally accepted professional principles and practices <br /> existing for such work. <br /> i <br /> I <br />