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L <br /> tSTANDARD OPERATING PROCEDURE FOR <br /> MONITORING WELL INSTALLATION <br /> PURPOSE <br /> The purpose of this standard operating Procedure is to delineate the quality control measures <br /> required to ensure the accurate installation of monitoring wells. <br /> FIELD SUPPLIES <br /> Drilling Equipment <br /> • Appropriately sized drill adequately equipped with augers,bits, drill stem, etc. <br /> C • Steam cleaner and water obtained from approved source for decontaminating drilling <br /> equipment <br /> • PID, LEL-Oxygen monitor, and other air monitoring as required <br /> • Water level indicator, <br /> • Weighted Steel tape measure <br /> • Drums,bins or other storage containers of generated wastes (drill cuttings, contaminated <br /> PPE, decon solutions; etc.) <br /> • Source of approved water <br /> • Waste container labels <br /> • Heavyplastic sheeting <br /> g <br /> Well Installation Materials <br /> • Well screen <br /> Screen will be constructed of appropriate materials (PVC, stainless steel, etc.)cleaned <br /> and prepackaged by manufacturer or decontaminated and wrapped in plastic before use. <br /> • Riser pipe: <br /> Riser will be cleaned and prepackaged by manufacturer or decontaminated and wrapped <br /> in plastic before use. <br /> • Plugs or sump: a cap or a 2-foot length of capped riser to be used as a sump. <br /> • Filter pack: chemically and texturally clean sand of appropriate grain size distribution. <br /> P <br /> Page 1 of 9 <br /> well—install—SOP, MONITORING WELL INSTALLATION February 2005 <br />