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washing the equipment using a non-phosphate soap solution and rinsing the equipment twice <br /> with distilled water <br /> Duplicate. One duplicate sample was collected from the site from a randomly selected <br /> monitoring well. The duplicate sample was collected at the same time as the original sample <br /> and was treated in the same manner as the original sample. The duplicate sample was <br /> submitted to the laboratory for TPHg and BTEX analysis. <br /> Trip Blank. A trip blank was prepared by the analytical laboratory and accompanied <br /> the sample bottles throughout the shipping and sampling events. The trip blank was submitted <br /> to the laboratory for TPHg and BTEX analysis <br /> Field Blank One field blank was collected in the field by the field technician The <br /> field blank was prepared, prior to sampling, by filling three 40-m1 VOAs with distilled water <br /> The field blank was submitted to the laboratory for TPHg and BTEX analysis <br />