Laserfiche WebLink
AmerAUa, Inc MWA-2 Oritfing and Completwn Repon <br />~ gallons per minute [gpm] of water) was used as a circulation medium. During drilling, cutting <br />samples were collected and described eery ~ feet, whereas groundwater discharge <br />measurements and geochemical measurements +eere taken every 40 feet, or at shorter inten•als if <br />conditions dictated. Groundwater was first detected at approximately 270 feet, and collection of <br />hydrologic data began at a depth of 300 feet Ithe first occurrence of measurable groundwaterl. <br />Drilling of the 12.324-inch-diameter hole and sampling continued to a depth of 947 feet, which <br />was reached at 16:0> on December'_0, 1999. Drilling of the 12,3'_3-inch-diameter hole ++'as <br />suspended lxcause there was insufticicnt air volume and pressure to run the air-hammer <br />efticiently and lift the groundwater produced (approximately 145 gpml.:1fter cleaning out the <br />holy by bottoms-up circulation, the drill string and drilling assembly wise tripped out of the hole <br />:tnd 947 feet of ';-inch l)D casing (J-55, 26.4 pounds pcs 1'ootl was installed and cememed to the <br />>urface ++rth Portland cement using dte spot or trcmic method for cement placement. \Vork was <br />completed at 2.:~9 on December 21. 1999.:\ctivitics were suspended at 07:30 on December "_. <br />1999, far the Christmas-1\cw Year's break. ('figure ~ illustrates titr completion status of ~iW':1-_' <br />+vith respect to tht casing program. <br />Site activities resumed at 06:10 on Januan 4. 2000. t3ccause of the long break and cold <br />conditions lbel.~++ ~.I °F ), Lane personnel had difficulty starting the vanous ptzces of eyutpmcnt <br />and thawing out dow lines and tanks.:\tter these star-up problems were overcome. a tricone <br />drilling assembi} (6~-inch bit) was tripped into the hole and drilling of the casing shoe <br />commenced at la >5 on January 4, 2000. :\ir mist was used as the circulation medium. Drilling <br />of the 6'g-inch-diameter hole continued from 947 to I?00 feet fD, which was attained at 14:20 <br />on January :. 2000. Following bottoms-up circulation. a detailed water sample was collected <br />and submitted to :\CZ Laboratories m Steamboat Springs, Colorado, for the Long List <br />geochemical analysis. The drilling assembly was tripped out of the hole and the rig moved to <br />Amcr:1lia 1\'ell >IWEi-2. Total time on site at MWA-_. from move-in ro move-out, was <br />approximately 1' days. Well-bore geophysical logs consisted of a cement-bond log, gamma ray <br />log, and casino collar locator log, which were run by Rocky Mountain 1b'ireline Sen'ice out of <br />Grand Junction. Colorado. on January 14.2000 (Appendix A). <br />1 <br />I- <br />L' <br />