Laserfiche WebLink
NOTE: Abandonment sealant consisted of 50 pound bags of "Bore -Gel" bentonite, <br />mixed with approximately 1 gallon of water per pound in a 200 gallon stock tank. Once <br />the hole was drilled to total depth, it was blown clean of cuttings and the mixed sealant <br />pumped through the drill string, until the sealant circulated to the top of the hole. The <br />drill pipe was then "tripped" out of the hole and additional sealant pumped into the hole, <br />as the drill pipe was withdrawn. The drill rig would then move off the hole and onto <br />another location. Each of the holes was logged with geophysical tools. After logging, <br />the drilling contractor would complete final reclamation of each hole by dumping 2 50 <br />pound bags of bentonite chips into the hole, then shoveling cuttings into the hole to a <br />depth of 10 feet below the surface. The final ten feet of hole was then filled with concrete <br />to 2 feet from the surface. The top two feet of the hole was filled with native soil. Any <br />remaining cuttings were removed or dispersed and the area seeded with the approved <br />seed mixture. <br />3 <br />