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QA/QC Procedures <br /> calx ra n Equipment used to monitor groundwater parameters was calibrated <br /> prior to beginning purging at the site Monitoring equipment was calibrated following the <br /> marnufactures instructions using laboratory grade standards <br /> FEapment Decontamination Non-disposable and non_dedcatedsampling equipment was <br /> cleaned pnor to use and between uses in each well Downhole equipment was cleaned by washing <br /> the egwpmerrt using a non-phosphate soap solution and rinsing the equipment twice with distilled <br /> water <br /> licate One duplicate sample was collected from the site from a randomly selected <br /> monctonng well The duplicate sample was collected at the same time as the original sample and was � <br /> treated in the same manner as the ongenal sample The duplicate sample was submitted to the <br /> laboratory for TPHg and BTEX analysis <br /> T ' <br /> Up Blank A trip blank was prepared by the analytical laboratory and accompanied the <br /> sample bottles throughout the shipping and sampling events The trip blank was submitted to the <br /> laboratory for TPHg and BTEX analysts <br /> Field Bla- One field blank was collected in the field by the field technician The field blank <br /> was prepared, prior to sampling, by filling three 40-ml VOAs with d=lled water The field blank <br /> was submrtted to the laboratory for TPHg and BTEX analysis. <br /> , <br /> I <br /> „ <br /> I , <br /> i <br /> I <br /> A <br />