Laserfiche WebLink
4tANA L Y TICA Report Number: 33432 <br /> LLQ, Date : 06/11/2003 <br /> Subject: 1 Water Sample and 9 Soil Samples <br /> Project Name : 7-Eleven Store#32262 <br /> Project Number: 77EL.32262.43 <br /> Case Narrative <br /> Matrix Spike/Matrix Spike Duplicate Results associated with samples T4-14.5',T9-14.0',T5-14.0', T7-10', <br /> T6-10',T3-10', T2-10',T8-10', T1-10'for the analyte Tert-Butanol were outside of control limits. This may <br /> indicate a bias for the sample that was spiked. Since the LCS recoveries were within control limits, no <br /> data are flagged. Matrix Spike/Matrix Spike Duplicate Results associated with samples T4-14.5', <br /> T9-14.0',T5-14.0', T7-10',T3-10',T2-10', T6-10', T8-10',T1-10'for the analyte Methyl-t-butyl ether were <br /> affected by the analyte concentrations already present in the un-spiked sample.Tert-Butanol results for <br /> samples T1-10',T4-14.5',T5-14.0',T6-10',T7-10'and T8-10'may be biased slightly high and are flagged <br /> with a U.A fraction of MtBE(typically less than 1%)converts to Tert-Butanol during the analysis.We <br /> consider this conversion effect to be mathematically significant in samples that contain MtBE/Tert-Butanol <br /> in ratios of over 20:1. <br /> Hydrocarbons reported as TPH as Gasoline do not exhibit a typical Gasoline chromatographic pattern for <br /> samples T1-10'and T2-10'. <br /> Approved By: J , I Kiff <br /> 2795 2nd St, Suite 300 Davis, CA 95616 530-297-480 <br />