In 2017, AAI drilled a monitoring well hole into the Level 2 Adit of the Standard Mine located near Crested Butte, Colorado, for HDR Engineering, Inc. in support of the Environmental Protection Agency’s (EPA) ongoing work at the site.

AAI drilled into the Level 2 adit using AAI’s custom-fabricated track-mounted drill rig fitted with down-the-hole (DTH) drilling capabilities.  The track-mounted rig needed to be custom fabricated since terrain on-site was rough and the drilling elevation was above 11,000 feet.  Holes were up to 85 feet deep.

Following drilling, holes were completed with 5.0-inch-diameter, Schedule 80 pipe, grouted with bentonite, and capped.  A monument with a locking cap and protective bollards were also installed.

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