WORK PLANS - Laserfiche WebLink

Home Browse Search

Installation Overview Monitoring Your CMS' Multilevel -:ere are many options nor the installation of a _-M7 System Water levels can be accurately established using the Soiinst Mini depending on the Iithoiegy and protect -eouirements. Titpicai 101 Mater Levei Meter. The Mini 101 is ideal for use in shallow installation options inciude: CMT Systems. Longrhs of 30 A. 63 It. 10m or 20m. of :.he • Consolidated Boreholes (Bedrodk) narrow 1/4" (6 mm)tape are mounted on a convenient smail Zones may be isolated with: reel. A narrower Modei 102 coaxial cable Water Levei Meter a) Doubie-acting Packers for 3"(75 mml diameter or larger may be easier for use in deeper C`i(T Systems. boreholes b) Sand and bentonite iaverina, tremied or iniectea c) Pre-formed Senronite pscxers for 3" (75 mmi diameter or!anger oorehoies '.'nconsolidated Sediments (Overburden) instail the CM7 System: .. a) using sediment collapse around ::ping, in coilapsira ' formations using (50 mm) �r larger drive casing b) within well c--sing, with screened :.nwrrais ai the a-esired monitoring zones,and usinc options for_onsoiidatea:pies c: within-rove- remporary -acing or hoiicw -Tem pug. : oiinsr U .risraiuc?ami using sand and bentonite layering, rremied or injected An accurate 114 (6mm) using pre-formed bentonite packers and screens Jlaz rape and prone. Temporary,casing has the advanrage that it aveias redistribution Sampling can be per-ormed using the -Soiins-t Model 4'_0 of soil and contaminants ana thus potentiai positive biases. Air Penstaitic Pump, a small inertiai Wa:e^a Pump, or a single rotary, cable tool, sonic and targe direct-push (DP` rigs ::an ail valve pump. oe used io advance temporary ;:acing. Tae smaller sonic and direct-push rgs also offer eeasy-access advantages. CMT System Sizes he tubino is available in lengths of 100', 200'& 300' (30m, bum and 90m). if:,eeper mtutilevels are desired the Waterloo Muitilevei System can be consideree. (See Data Sheer 401.) T :ne J.D. �...CM, tubing:a^ -.7" t _ mm)has 7 channels. Although not circuiar, the iD of the 6 outer channels are approximately 7/16" (11mm) and the smaller cenrrai channel is 3/8" (9.5mm). The tubing -oils are approximately 4 it. 1.?2 m) in diameter. .4 suaporr stand eases The fully prepared C11T Wher, a CMT Svstem is to be the preparation o(poru. System is lowered into installed through narrow diameter :he hole. direct push equinmenr using direc_ burial with formation collapse Typical Installation Procedures around the system.the por,screens can be held :n place using low The CMT Muitilevel is completely built above greune and then profile clamps. These give an :rserted into the borehoie. A. set of appropriate ;nstalladon, overall diameter of 1.75" (44.45 toois is available ro suit each ::MT System. A support stand is mm) to the 1.7" system. Tae recommended to hold the tubing in a convenient position whiie regular' ;amps give an . Tlh l the ports are drilled and sealed. diameter of 1.9"(48.25 mm)when lnstailaticn is simple. After drilling the hole, lay out he CMT packers or sand packs are not used. tubing, mark the zones to be monitored and prepare the porn P-a-Hacked berrenite packer and inlet holes. If packers and/or sand pack are re be used, slip Doubie-Acting Packers are =hem into position. When _and packs are ;ct -e be _sed. available in a variety of diameters screens are piaced over the port inlet holes. to suit different sized 'notes. The CMT Svstem car.then be lowered into the hole. Double- P-e-packed sand paries are Acting Packers are inflated or time is given to allow Pre-formed aWT!uoing is laved out available with differenr sizes of round or plastic i3enronite Packers to expand, and monitoring can begin as on the gscreen mesh and different sizes of sheeting for pons to be soon a hydraulic and hydregeechemical eauiiibrium has been prepared and oiacemenr sand, to suit hydrogeologic re-esiabished. pactcers. conditions. High Quality Groundwater Monitoring Instrumenrarion °° 9