Laserfiche WebLink
H~ew~y well gas <br />t. J <br />• <br />• Drilling fluid consisted of clear water with a light polymer additive. <br />The core hole was completed as a Lower Aquifer monitoring well <br />installation. <br />Below the monitoring well completion, the core hole was cement-grouted <br />from TD (2253-ft bgs) to a depth of 1074-ft bgs. <br />• The well completion was constructed with 2-inch Schedule 80, flush- <br />threaded, )-ring sealed, PVC well casing and 2-inch Schedule 80, 0.02- <br />inchslotted (20-slot) well screen to a depth of 1047-ft bgs. <br />• A 10-ft screen was placed at the base of the well completion interval from <br />1064- to 1074-ft bgs. <br />Sand pack (clean, #8) was placed from 1074- to 994-ft bgs. <br />A bentonite seal was placed above the sand pack interval from 990- to <br />994ft bgs. <br />The core hole was cement-grouted from the top of the bentonite seal (990- <br />ft bgs) to 2-ft bgs using a 1-inch termie pipe to assure complet grout <br />placement. <br />• A steel, flush-threaded extension with a locking cap was added to the top <br />of the surtace casing. <br />Sampling <br />• July 22, 1999 water quality sample collected using low flow bladder pump. <br />• August 25, 1999 water quality sample collected using dedicated gas <br />displacement pump. <br />September 23, 1999 water quality sample collected using dedicated gas <br />displacement pump. <br />• October 21, 1999 water quality sample collected using dedicated gas <br />displacement pump. <br />r <br />