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e <br /> na <br /> `�i.,•.r- . n.,:�:Y".'matrti"'ai• v;�1:r'.+-•-^m�sxe.s'd'°��•���m'°twti*" �:".:,<�,..iao� °'�. :i."'4�'e"L'�..� ..�f3'" <br /> -� Reliable Data <br /> The effectiveness of the Waterloo System is proven by its <br /> ability to accurately and repeatedly obtain pressure and <br /> groundwater chemistry data from several distinct zones in <br /> a single borehole. The data set below shows a decrease i <br /> in Total BTEX contamination due to ongoing pump and , <br /> treat operations at an oil pipeline leak. <br /> Sample Pun Total HITX Concenlraliun.(u g/L) <br /> rlevutinn "w''" <br /> 111U ll 111 I ),IMNI 10011) lw,IXM) <br /> 24u) <br /> ?lu <br /> ?211 Ii l l\........lnr:lnun•14%4 <br /> ,!•,i,n.r.ul..Laliunl <br /> 1111\!'„n:.nlnliun.1441 <br /> ...i a u.!L.nnn�llmiun rn�ranl I •Y: - <br /> ?III <br /> Uruler4round oil pipeline leak assessment. Three 150 ft. <br /> (45m) installations, monitored with portableltater Level <br /> _ Meter and Triple Tube Sampler: Two point rising head <br /> Piczmicler w<-- w” lu' rn' pei-meabilrty tests were conducted in each intei-val of the <br /> Wail Multilevel SYstem. <br /> )lydraulie QmJuairil,InJsl <br /> Overburden Bedrock and/or Overburden <br /> w <br /> i <br /> T. <br /> 'µs <br /> Bedrock:` <br /> Bentonite Seal <br /> a r I <br /> -00 <br /> Screened Port • .1 <br /> Sand Pack <br /> Direct Burial: Formation Collapse Direct Burial: Sand and Bentonite <br /> with Screened Ports with Screened Ports <br /> High Quality Groundwater Monitoring Instruments 971 <br /> llnS�. <br />