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v Solinst-. CVT!flulfilevel System Model 403 Data Sheet cNi ff mu' ltilevel Svstem* CMTM Model 403 The CMT Multilevel System is a unique and highly economical approach to multilevel groundwater :monitoring. It proviaes the simplicity and low cost of a bundle-type installation, with the benefits of backfilling or sealing around a single tube. ne 9exibie system uses continuous polyethylene muitichannei tubing which is customized on site with screened miervais and packers, based on the borehole log. The 1.7" OD tubing (43.2 mm) has 7 monitoring channels. The systems are easily insaded in overburden and rock borehoies, inside existing casing, or within narrow diameter augers. The CMT Multilevel allows detailed 3-D water level and water quality data at an �- affordable price. Detailed transect monitoring of plumes using CMT Systems enable _ones of nigh concentrarions to be accurately identified, quicldy and at less cost. New monitoring strategies by US EPA encourage the use of transects of -nultilevei .vefis installed in aline across:he contaminant piume. The sampling ransec:s ensure :hat:eieases will oe detected, even when'he locations or plumes fluctuate in response t�'e -o seasonal variations. Transects of muitilevel wells allow site investigators to assess 5e longevity or residual sourcas and caicuiate fieid-basec rates with greater accuracy and .:onficiencz. With more precise monitoring data :7e frecuency Or samptmg can oe siaruficantly reduced. resuiting 'n dramatic cost savings. I jjjjj i i I� L 'continuous rubing with 7_rl/="(1_.7 mm) Use ps re-formed packers and sand Packs Porrs and Packers are piaced exactly where miernai channels. or standard r?kers and bentonite seals. needed immediately prior to insrailation. Advantages of Multilevel Systems Advantages of the CMT Multilevel • Provide the most accurate 3-D assessment of a site • _ow cost and ease or use • Vital to understanding vertical flow of contaminants • Up to 7-zone monitoring in a single tube • Allow documentation or cnanges in the irrenath and • No joints-one smooth surface for easy. eriecnve sealing location of a contaminant plume • Ports and packers can oe located anywhere atong tubing • Low --ost compared with alternative methods • Doubie-Acting Packers allow easy system removal Research has shown that contaminant plumes are often thin ` Simple system may be tistomized and built on site and highly stratified. Traditional monitoring wells,with screened he hole is not lent open to deteriorate or contaminate ]ntervais of 10 it. ;3 mj or more. blend the groundwater over installs quickly in large direct-push casing and bigger holes the entire length of the Breen. which can mash the true - one seven-zone CMT Svstem can be completed by two concentrations and distribution of contaminants. people in under 3 hours Multilevel wells with short screened intervals overcome ;his problem and offer more precse identification, better design Applications options for treatment and excellent ongoing monitoring. "ransec- monitoring of spill and contaminant sites to identify vertical as well as horizontal distribution Endorsements of Multilevel Monitoring • Mass transport calculations • US ERA Monitored Naturai Attenuation for Ground Water Seminar Determination of the best location for!eactive barrier walls Series. 19981 NAP!and MTBE monitoring • Interstate Terhnoiogy Regulatory Cooperation(ITRC', Natural Monitoring of natural attenuation or remediation processes Attenuation or Chlorinated Solvents in Groundwater course. 1998 • Ideal for shallow wells in high water table • American Petroleum Institute. Reguiatory&Scientific Affairs Multilevel water sampling and level monitoring in Publica[ion No: 4699 -Strategies ;or C:aracterizing Subsurrace overburden, bedrock or cased wells Releases or Gasoline Containing MTBE', 2000 Patents Pending High Duality Groundwater Vlonitorin-Instrumentation &Iinz