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a <br /> NOW <br /> _ C <br /> decontaminated prior to commencing drilling at each <br /> Will be materials will be cleaned as <br /> hole. Well construction materia <br /> necessary, prior to installation. will be <br /> well material decontaminationmination <br /> Equipment and r sur.face and all decontequipment <br /> conducted on an impermeableAl1 surfaces of the cleaner- <br /> be contained• using a steam for air <br /> ' effluent will be <br /> decontaminated drying rack <br /> will be be placed on a containers <br /> The equipment will a and disposed of in <br /> drying- <br /> The decontamination water will stored in <br /> certified for hazardous materials store <br /> an approved manner• organic <br /> Pesticides and <br /> (Alconox <br /> Sample equipment to be used for oshate detergent <br /> in a nowater, followed by <br /> analysisrwill be and ed rinsed with tap If the equipment <br /> or equi` alent) with acetone. <br /> deionizeci water and finally water and deionized <br /> the initial rinse will be conducted <br /> is for metals analysis, tap <br /> with 0.1 N nitric acid followed by <br /> water. <br /> 7.0 Field Equipment Calibration and Maintenance <br /> may be used during the <br /> measuring equipment is grouped by field <br /> The following investigation. Equipment are listed <br /> Remedial. InVeibra rocedures and frequency <br /> activity,- <br /> for <br /> P <br /> for each piece. <br /> and Well Dimensions Steel and Coated clot <br /> Soil Bars in none. <br /> tape. Calibration: ors tape. <br /> Measurements in Wells- Steel survey <br /> Level su lied temperature correction <br /> Water manufacturer PP fox, field conditions- <br /> Calibration: applicable check against steel <br /> will be applied as Calibration: <br /> Electrical well sounders- <br /> surveyor's tape. Calibration: <br /> 0�iC V�oxs_ photoiization detector. <br /> Daily <br /> field Calibration using a isobutylene standard as per <br /> ructions- <br /> manufacturers instd meter. Calibration: <br /> g Measurement- Digital P utilized for <br /> Groundwater �� and 10 rri11 be <br /> standard pH solutions of �• to manufacturers <br /> daily field calibration according <br /> instructions. meter. <br /> Electrical Conductivit <br /> Electrical conductivity and iperiodically <br /> factory calibrated annually <br /> Calibration: prepared standard calibration <br /> calibrated against laboratory P P <br /> solution. or digital thermometers. <br /> Temperature-- Mercury <br /> Water factory-calibrated once. <br /> Calibration: <br />