Laserfiche WebLink
' Summary of Drilling Methods&Techniq> r Installing CMT wells in Unconsolidated Ars Page 2 of 2 <br /> borehole.Prevents in borehole.Add casing removed. <br /> redistribution of alternating lifts of <br /> contaminants along sand and bentonite <br /> borehole wall during pelletsl as casing is <br /> drilling. withdrawn,either by <br /> gravity placement, <br /> tremie methods or <br /> ' using the Solinst <br /> Sand Bentonite <br /> Injector. <br /> ' Mud rotary Widely available. Place CMT tubing Thin drilling fluid as <br /> directly into borehole much as possible <br /> with anchor plate prior to installing <br /> attached to bottom of annular materials. <br /> tubing.CMT tubing Use a coarse-grained <br /> centralizers should be filter pack.Mud filter <br /> used to center CMT cake can be difficult <br /> tubing in borehole. to remove with <br /> Place sand pack and development <br /> bentonite with a methods available for <br /> tremie tube and grout CMT wells. <br /> pump. <br /> 1 Coated bentonite pellets do not hydrate as quickly,therefore these <br /> pellets are useful for deeper applications,however some coated <br /> pellets give off either ethanol or acetone,and can cause elevated <br /> detection limits of some target compounds.Typically,uncoated <br /> pellets are suitable for depths up to 100 ft of water. <br /> i . . <br /> Home I Products I About I Contact Us I Papers I Downloads I Tradeshows I Rentals I Links I Espanol I NEWS I Sitemap I <br /> 1 <br /> ' http://www.solinst.com/Prod/403/403addon/403SOP.htmi 4/5/02 <br />