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sohnst Installation Overview Monitoring Your CMT Multilevel T'nere are many options for the installation of a CMT System Water levels can be accurately established using the Solrnst Mirir depending on the lithology and project requirements Typical 101 Water Level Meter The Mira 101 is ideal for usein shallow installation options include CMT Systems Lengths of 30 ft, 65 ft, 10m or 20m of the a Cansolldatgd Boreholes o narrow 1/4"(6 mm)tape are mounted on a convergent small Zones may be isolated%nth reel A narrower Model 1.02 coaxial cable Water Level deter a) Double-Acting Packers for 3"(75 mm)diameter or larger may be easier for use in deeper CMT Systems boreholes b) 5nd and be;}mite lavennQ, tremred or injected c) Pre-foEmgd 13entonite D c=ern for 3" (75 mm)raameter or larger boreholes a l<lnconsolidated Sediments Overbuy en Install the CMT System a1 ing_sediment colla se around tubing, in collapsing formations using 2" (50 mm)or larger anve casing b) within well canna, with screened intervals at the desirea monitoring zones,and using options for consolidated holes c) mthin dnv= t casing oil w stem 3n accurate 1/4 (6m-) sohnst#410 Perutalhc Pump using sand and bentonite layering, tremred or injected f tape and probe using pre-farmed bentorute packers and screens Temporary casing has the advantage that it avoids redistribution Sampling can be performed using the Solinst Model 410 of sod and contaminants and thus potential positive biases Air peristaltic Pump, a small inertial WaTerra Pump, or a single rotary, cable tool, sonic and large direct-push (DP)ngs can all valve pump be used to advance temporary casing The smaller sonic and direct-push rigs also offer easy-access advantages CMT System Sizes The.-tubing is available in lengths of 100', 200'&300' (30tH, 60m and 90m) If deeper multilevels are desired the Waterloo . Multilevel System can be considered (See Data Sheet 401} The 1.7" O D. CMT tubing (43 2 rTtm)has 7 channels Although not ^ - circular, the ID of the 6 outer channels are approximately 7/16" (11mm) and the sma}ler central channel is 3/8" (9 5mm) The tubing coils are appnaiarnateiy 4 ft (1 22 m)in diameter A support stand eases The fully prepared CWT When a CMT System is to be the preparation ofporrs System is lowered into in.�(LPd throe narrow diameter the hole direct push ecsurnznent using direct burial with formation collapse Typical Installation Procedures around the system,the port screens can be held in place using low The CMT Multilevel is completely built above ground and then profile clamps These give an inserted into the borehole A set of appropriate installation overall diameter of 1 75" (44 45 tools is available to stut each CMT System A support stand is mm) to the 1 7" system The recommended to hold the tubing in a convenient position while regular clamps give an overall the ports are drilled and sealed diameter of 19"(48 26 nun)when lnstallation is simple After drilling the hole, Lay out the CMT packers or sand packs are not used tubing, mark the zones to be monitored and prepare the port `?re-eked bentonite Rankers and inlet holes If packers and/or sand packs are to be used, slip D are them into position When sand packs are not to be used, available in a variety of diameters screens are placed over the port inlet holes to suit different sized holes The CMT System can then be lowered into the hole Double- Pre-packed sand packs are Acting Packers are inflated or time is given to allow Pre-formed CUT tubing is layed out available with different sizes of tic Bentonite Packers to expand, and monitoring can begin as on the ground or to be screen mesh and different sizes of soon ash hydraulic and h dro eochemicai equilibrium has been re pared a r ports ton sand to suit h dro eolo is `� Y g q prepared and placement Y g g re-estabished of packers conditions High Quality Groundwater Monitoring Instrumentation solbuf