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Canonxe Environmental Case Narrative <br /> c _lxent : ENVIRONMENTAL SOLUTIONS Pro3ect # :L90076 . <br /> r'P # : 9884 <br /> inorganics Case Narrative <br /> Analyses completed an accordance with EPA methods cited. <br /> Volatiles Case Narrative <br /> Calibration was verified for all samples . <br /> Surrogate recoveries were within acceptable limits . <br /> The method blank associated with this group of samples was <br /> free from target analyte interferences at, or above, the <br /> reporting limits . <br /> Spike recoveries were within acceptable limits . <br /> Samples ST-2G and ST-3D contained heavy hydrocarbons in high <br /> quantities . <br /> Pesticides Case Narrative <br /> TEH: Calibration was verified for all samples analyzed. The <br /> Method Blank was free from interferences at or above the <br /> reporting limits Interferences in sample ST-3D (855435) <br /> exceeded the spike concentration and required a dilution for <br /> analysis which qualifies any recovery data Sample ST-2E <br /> (855427) and ST-2K (855433) contained extractable hydrocar- <br /> bons below the reporting limit at an estimated concentra- <br /> tion of 0 . 56 and 0 . 64 ppm_ respectively • <br /> PCB: Calibration was verified for all samples analyzed. The <br /> method blank was free from interferences at or above the <br /> reporting limits. Spike recovery was within acceptable limit <br /> , spike duplicate recovery was low, which caused high <br /> relative percent difference. <br /> Extractions Pest. Case Narrative <br /> TEH: All samples were cextracted within the required holding <br /> time by Method 3550 . <br /> EPCB--S <br /> All samples were extracted within the required holding times <br /> using method 3550 . All samples and the blank were subjected <br /> to an acid clean-up to remove interferences . All samples and <br /> the blank were given a TBA clean-up to remove sulfur <br /> compounds _ <br /> CanoweEnvironmental <br />