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ROY F WESTON, INC <br /> STOCKTON ANALYTICAL LABORATORY <br />' ANALYTICAL CASE NARRATIVE <br /> Client SAN JOAQUIN MOSQUITO <br />' RFW # 9407S618 <br />' TOTAL EXTRACTABLE HYDROCARBONS <br />' 1 This narrative covers the analysis of 3 samples in accordance with protocols based <br /> on California LUFF Manual, October 1989 <br />' 2 The analytical holding time for this analysis was met <br /> I <br /> 3 Initial and continuing calibration criteria were met by the standards associated <br />' with the tramples covered by this report <br /> 4 The method blank associated with these samples did not contain any target <br /> 1 compound,, at or above the reporting limit <br /> 5 Surrogate recoveries for n-Eicosane were within advisory limits <br /> 6 The recoveries for the blank spikes were within advisory limy <br /> P ry is The RPD was <br /> within advisory limits <br />' 7 The recovery for the matrix advisory lime <br /> spike was within ad <br /> P ry is <br />' Dale E Gamble/Unit Leader Date <br /> 1 <br /> f <br />