2014-09-09_INSPECTION - M1983067 (5)

Home Browse Search

Epvi*ropvqei)t, lC. LARRY E. O'BRIAN 7985 VANCE DRIVE, SUITE 205A FOUNDER ARVADA, COLORADO 80003 STEVAN L. O'BRIAN 303 - 423 -7297 PRESIDENT FAX 303 - 423 -7599 September 5, 2014 Mr. Tyler O'Donnell Division of Reclamation, Mining & Safety 1313 Sherman St, Suite 215 Denver, CO 80203 OECEIVED Dear Tyler; SEpa9?- 014 aftom RE: Albert Frei & Sons, Inc . � C�AT10N Stagecoach Pit - 8/14/14 Inspection WETy M.L.R.B. Permit # M -1983 -067 Thank you for sending the inspection report for the Stage- coach Pit, by e -mail today, giving us more time to respond to the corrective actions noted in the report. Ben Frei and I have reviewed the requirements and we feel the initial mitigation is to start with the drainage system from the Zigan lake across the Stagecoach mine to the river since the lake level concerns seem to be the most pressing at this time. As part of the mitigation plan Albert Frei & Sons, Inc., proposes immediately opening the lake overflow pipe so there is a direct flow into the river. The recharge pond will then be allowed to drain and dry up taking an potential impediment out of the system. This will be dome by in taliing a "T" joint inluzo the Stagecoach side of the pipe below the shutoff valve and diverting the water into the river. This will be completed by Friday, September 12, 2014. We believe that by eliminating the pond, we will be increas- ing the efficiency of the pipeline system by allowing for the free flow of water thru it. The next step will be-to inspect the interior of the pipeline by sending a camera through it to check for any obstructions or breaks that may be creating problems. This will be completed by Wednesday, September 17, 2014. If problems are found they will be fixed as soon as possible. When is its determined water is flowing unimpeded through the pipeline system at its maximum capacity, we can then monitor lake level changes to see if the problem is resolved. We propose