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Page 3 November 12,2008 <br /> Sand pack was tagged at 69.5 ft below top of casing(BTOC)at the end of the work day on October <br /> I e. The calculated top of the well screen was 63 ft BTOC. <br /> Sand pack installation on October I Ph became problematic after adding sand and tagging the top of <br /> sand at 64.5 ft BTOC. A ledge or bridge in the borehole was initially encountered at a depth of 48.6 ft <br /> BTOC while tripping the tremie pipe to begin a second round of sand placement. An initial attempt to <br /> blow this bridge clean with air in the tremie pipe was successful and the top of sand was tagged at 64 ft <br /> BTOC. More sand was added and the tremie pipe plugged. The tremie pipe was partially pulled from <br /> the well and the plug was freed. However,another bridge was encountered at 46.7 ft BTOC when <br /> attempting to reenter the hole. Attempts to clear the bridge were unsuccessful;including efforts to <br /> force the tremie pipe through the obstruction and blowing air through the pipe to dislodge the bridge. <br /> EFR was contacted and informed of the bridge problem. As presented by WWL,the bridge was <br /> impassable and any other means to clean out the bridge was not feasible without possible damage to the <br /> well casing. The worse-case scenario involved approximately 1-ft of screen that was not sand packed <br /> and the existence of an open annulus between the casing and borehole wall from approximately 64 ft to <br /> 47 ft BTOC. This interval was in dry strata,well above the static water level of 73.5 ft BTOC. WWL <br /> recommended proceeding with well construction with the installation of bentonite pellets and bentonite <br /> grout. Monitoring well data and overall function would be evaluated over time for any indications of <br /> well integrity problems. EFR concurred and the well was completed as recommended. Two 5-gallon <br /> buckets of bentonite pellets(Colloid Environmental Technology Co.and American Colloid Co.Pure <br /> Gold®product)were hand poured into the annulus and hydrated with 5 gallons of fresh water. The top <br /> of the bentonite pellets were tagged at 40.5 ft BTOC. Six sacks of Pure Gold bentonite were used to <br /> complete the grout interval of the well(approximately 13 gallons of mixed grout was not used in the <br /> well). Grout was added to approximately 2 ft BTOC(within the steel surface casing). Colorado Silica <br /> Sand No.8-12 was placed on top of the bentonite grout to raise the annulus spacing inside the steel <br /> surface casing. The well PVC casing was capped with a compression-type cap and the steel casing was <br /> fitted with an aluminum lockable cap. WWL installed a temporary combination lock on the casing cap. <br /> Well Development <br /> Well development was conducted on October 12"'with the use of air lifting. The well was developed <br /> by injecting air through the 1-inch tremie line installed inside of the PVC well casing. Air injection was <br /> cycled on and off;generally for 5 and 10 minute intervals,respectively. This process was conducted <br /> for a period of 4 hours. Initial produced water was very turbid and contained a fair amount of silt and <br /> very fine sand. Final produced water was still turbid,but the silt and sand components has significantly <br /> decreased. A sample of the final produced water was allowed to sit overnight resulting in complete <br /> settling of suspended sediment(clay). <br /> WWL recommended to EFR that a pump be used to conduct final well development. This was <br /> conducted by EFR on October 21'with reported success as the well produced water at 1 to 2 gpm and <br /> improved in quality significantly(low turbidity). The well was sampled for water quality on the same <br /> day. <br /> Hydrogeology <br /> Drill cuttings were collected and logged on 5-ft intervals. The lithologic log is shown in Attachment B. <br /> The well was collared and reached total depth(TD)within the Brushy Basin Member of the Morrison <br /> Formation. <br /> FFIas111208.doc <br />