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1 <br /> Weston, Inc - Stockton Laboratory <br /> Case Narrative <br /> 'nt = JOAQUIN COUNTY BUILDINGS <br /> rr # r 1 -751 <br /> F IrACTABLE PETROLEUM HYDROCARBONS <br /> This narrative covers the analysis of 2 samples in accordance with <br />' 3W-8d',, method 8015-modified <br /> The analytical, holding time for this analysis was met . <br /> Initi.aJ and continuing calibration criteria were met for this <br /> analy,i3 <br />' 3 The mQthod blank did not contain any interfering peaks at or <br /> above the reporting limit . <br /> Surrorxntes were not used in this analysis _ <br /> F The blank spike recoveries and the RPD for the spikes were within <br />' the advisory limits . <br /> 7 The sample listed below contains an unidentified peak not charac- <br /> teristic of a petroleum hydrocarbon, which is not included in the <br />' reported result. Listed below are the concentrations found in the <br /> sample <br />' Sample I .D . Reporting Limit Petroleum Unidentified <br /> (mg/kg) Hydrocarbon Peak <br />' MW-8 . 050 _ 074 . 020 <br /> 1 <br /> I <br /> ------------ ---�?J 1----- --- <br />' D. D. Jenner Date <br /> Unit Leader <br />