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I� <br /> i <br /> i <br /> ISOTEC <br /> Experimental Quenching <br /> Following the last application of reagent, all reactors remain undisturbed at room temperature for <br /> a minimum of 24 hours (2 weeks for persulfate) or until the oxidizer is completely consumed as <br /> determined by laboratory analysis. Treatment effectiveness is evaluated by calculating the percent <br /> VOC reduction in each treatment reactor relative to the control reactors. <br /> Sample Collection and Analysis <br /> Following sample quenching, final values of pH are determined from the monitoring reactors. <br /> Samples are submitted to a Colorado certified laboratory for contaminant analysis. Samples will <br /> be analyzed using EPA 624/8260 for VOCs, EPA 6010/6020/200.8/7000 series for iron and <br /> manganese, and EPA 415.1 for TOC. The samples will include: <br /> 4 ♦ "Initial' groundwater samples for VOC, iron, and manganese analysis. <br /> I ♦ "Initial' soil samples for iron, manganese, and TOC analysis. <br /> ♦ "Initial' soil-slurry samples for VOC analysis. <br /> ♦ "Control"groundwater and soil-slurry samples for VOC analysis. <br /> ♦ "Treatment" low, medium and high dosage groundwater and soil-slurry samples for VOC <br /> janalysis. <br /> { <br /> i <br /> i <br /> � I j <br /> i t <br /> 1 � ' <br /> 1fr <br /> II <br /> 4 <br /> i <br /> +t <br /> I� <br /> I <br /> I <br />