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AmerAha, Inc. tdWB-2 Grilling antl Completion Report the drilling assembly (air-hammer) and supporting surface eyuipment, drilling of a 10-inch- diamctcr hole began at 06:1 ~ on Januan• 6, 2000. Air mist (3 to 5 gallons per minute [gpmJ) was used as a circulation medium. The injec[ion water came Iiom neazby Yellow Creek. Mier intersecting the water table at approximately 27S feet. groundwater dischazge measurements were taken periodically by Lang personnel Collection of groundwater geochemical data by Daub & :1ssociates. Inc., personnel began at 1.095 feet and continued to the bottom of the hole. Because of the signiFcant groundwater flow (approximately 60 to 75 gpml. drilling of the l0-inch-diameter hole with the air-hammer assembly was suspended at 755 feet on Januarv 7, 2000 (04:301. 1-he drill string was tripped out of the hole and the air-hammer bit was replaced by a 9g•inch tricone bit. Drilling with the tricone assembly resumed at 09:30 on January 7, 2000. and conunucd to the interntcdiatc casino point (1,37 fees, which was reached at O7:QU on January 9. 2000. Rotary drill cuttings were described (Table 3) and well-water discharge samples below 1,095 feet were analyzed on-site (Table 41 by personnel from Daub & Associates. Inc. :)flee cleaning out the hale and tripping out. 1.375 feet of 5-inch OD casing l I81b/ft1 was installed and cemented to the surface by the tremic method on January l0. 2000. Figure illustrates the completion status of MWLi-_' with respect to the casing program. After the cement cured. drilling resumed at 18:40 on January IQ. ~fS00, and continued to I D 1:1,39$ fret). which w.ns reached at 20:45 un January 10, 2000, fhe drilling assembly consisted of a 4g-inch tricone bit with air mist (3 to S gpm water injection) as the ctrculation mcdium.:~fier bottoms- upcirculation and collection of a detailed water sample for field measurements and ati'•site labciraton~ analyses. the drilling assembly was tripped out of the hole and the rig moved to site MWD-2. Total time on site at M11'F3-2. from move-in to move-out, was approximately 5.2 days. Well-bore geophysical logs consisted of a cement-bond log, gamma ray lag, and casing collar locator log, which were run by Rocky Mountain Wireline Service out of Grand Junction. Colorado. on Januazy 14, 2000 (:~ppcndix A).