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erh%, 4irNC. SACRA <br /> MEN70 <br /> 1..0 Sampling and„Decontamination Procedures, <br /> The decontamination procedures for non-dedicated field equipment and,well <br /> development/purging equipment are given below. Theseprocedures are followed during <br /> all field activities. <br /> 1.. Non-dedicated well development, purging, and m <br /> p , sampling equipment is <br /> carefully cleaned prior to each use, as follows: <br /> a. Carefully brush off any loose foreign debris with a soft bristle brush. <br /> b. Rinse the equipment thoroughly in clean water. <br /> C. Wash the equipment in a non-phosphate detergent'bath. <br /> d. Rinse thoroughly in clean water. <br /> e. Rinse with pesticide-grade hexade (if.deemed necessary). <br /> f. Rinse thoroughly with deionized water. <br /> g. Air dry in a dust-free environment. <br /> f <br /> h. Store in sterile plastic bags'or other suitable cover until use, k <br /> 2. Clean disposable gloves are worn by all field''personnel whenihandling <br /> decontaminated equipment. <br /> 3. A clean plastic apron is positioned adjacent to or around the well riser in <br /> order to prevent equipment from coming into contact with surface materials. � <br /> All purging equipment and lines are kept on the apron or an adjacent <br /> ( 5 plastic "clean area' following decontamination and when not in use. <br /> L 1 <br /> 4 <br /> A-1 , <br /> 1 I' <br />