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NOTE Slide the probe rods over the tremae tube and place neatly on Geoprobe Grout Machine the ground next to the grout machine' (GS1000) (1 Plug Be careful to not pinch or bind the Plastic (13227) flexible tubing as this forms weak �1 spots which may burst when pressure ' is applied i I f 0 NOTE Try to avoid filling the up- per 12 inches (305 mm)of well an- 1 Fill Probe Rods nulus with grout when pulling the ex- with grout dot" bottom up pendable point holder This will 2 Continue ' make for a cleaner well cap installa- operating grout machine while tion mthdrawing rods 6 When all probe rods have been retrieved and the well is adequately Tremae Tube High solids (Fle)able Tubing grouted,unstring the tremie tube and Bentonite slurry 14299) begin cleanup It is important to forms well seal promptly clean the probe rods,grout Bentonite Seat machine, and accessories This is especially true of cement mixes as they quickly set up and are difficult Grout Barrier to remove once dried 57 Surface Cover/Well Protection A surface cover protects the P V C well riser from damage and tamper- ing Although aboveground and flush-mount well covers may be used, most Gcoprobe monitoring wells FIGURE 512 have been installed with flush-mount Grouting Well Annulus with covers (Pig 5 13) Consult the Geoprobe G51000 Grout Machine project planners and/or appropriate regulators to determine the approved well cover configuration for your specific application I In order to fit under a flush-mount cover,the top of the well riser must be below the ground surface Place the well cover over the riser and push it into the ground to mark the cover diameter Remove the cover and dig out approximately 6 inches(152 mm)of soil from within the cover mark ' 2 Remove the plug from the 1 0-inch PVC riser The top of the riser should be approximately 2 inches (51 mm)above the bottom of the hole if anoint is near this level,unthread the top rser if a joint is not positioned near the specified level,cut off the riser with PVC cutters Cut at a slight angle to make it easier to remove the plug Place a plug(13227)in the well riser Do not apply duct tape at this time NOTE- Do not cut off the riser with a hacksaw as cuttings will fall down into the screens ' Standard Operating Procedure Page 20 1 0-in x 2 5-in OD Prepack Screen Monitoring Well