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{ �f <br /> Canonie Environmental Case Narrative <br /> Client: San Joaquin County Project >L90026 <br /> I,P # e 8826 <br /> Volatiles Case Narrative <br /> The surrogate recovery for the primary quantitation of <br /> sample Aqua North was 135. 6,W. This was due to the high <br /> hydrocarbon content of the sample which resulted in a high <br /> baseline. Part of this excess baseline was integrated as <br /> surrogate. <br /> Inorganics Case Narrative <br /> Analysis was completed in accordance with California DHS, <br /> LUFT protocol. <br /> Pesticides Case Narrative <br /> Sample analysis for fumigants met SW-846 QC criteria. <br /> EDB was nondetected in three samples, but high levels of <br /> unknown compounds were found in all three samples. For <br /> the TPH scan, the blank was free from interference, recover- <br /> ies of the spike and the spike duplicate were high, and the <br /> relative percent difference was within acceptable limits. <br /> This is probably due to the matrix interference. <br /> CanoweEnvironmental <br />