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i <br /> cement. The mixed grout will be recirculated through the grout pump prior to <br /> placement. <br /> • Grout placement will be performed using a commercially available grout pump <br /> and a rigid, side discharge tremie pipe. <br /> Well protective casings will be installed around all monitoring wells on the same day <br /> as the initial grout placement around the well. Any annulus formed between the <br /> outside of the protective casing and the borehole will be filled to ground surface with <br /> cement. <br /> } The construction of each well will be depicted as built in a well construction diagram. <br /> The diagram will be attached to the boring log and will graphically denote: <br /> • Screen location,length <br /> • Joint location <br /> • Granular filter pack <br /> • Seal <br /> • Grout <br /> • Cave-in <br /> • Centralizers <br /> • Height of riser <br /> • Protective casing detail <br /> Monitoring Well Installation and Completion <br /> • Assemble appropriate decontaminated lengths of pipe, screen, and end cap/sump. <br /> Make sure these are clean and free ofrease soil and residue. <br /> g , <br /> • Attach the end cap/sump to the bottom of the screened section. Lower the screen and <br /> each section of pipe into the borehole one at a time screwing each section securely <br /> PP . g y <br /> into the section below it. "No grease, lubricant, polytetrafluoroethleyene (PTFE) tape <br /> Ci or glue, may be used in joining the pipe and screen sections. <br /> Page 7 of 9 <br /> well_install_SOP MONITORING WELL INSTALLATION February 2005 <br />