REV00659 - Laserfiche WebLink

Home Browse Search

~, . •- DIVISION OF MINERALS AND GEOLOGY Depadment of Nawral Resources I J 13 Sherman SL. Room 215 Denver, Colorado 80203 Phone: 13031 HLfi-35fi7 FAX: 13031 N 4!-fl10L September 19, 1996 Mr. William P. Balaz Jr., P.E. Balaz and Associates, Inc. 203 Sunset Circle Palisade, CO 81526 RE: Minor Revision No. 37 -Mine Facilities Construction/Demolition - Sanborn Creek Mine - C-81-022 Dear Mr. Balaz: I~~ DEPARTMENT OF NATURAL RESOURCES Roy Romer Governor lames 5. Lochhead Eeecunve Director Michael 0. Long Division Director We have reviewed the above -referenced minor revision. The submittal was deemed complete for the purposes of filing on August 23, 1996; however, we have the following adequacy issues. Please provide a response as soon as possible so that we may proceed with approval of this revision. 1) Please verify that all concrete foundation materials will be checked for hazardous contamination prior to demolition, and that any materials found to be contaminated with hydraulic fluids, solvents or other materials will be disposed of at a proper offsite facility. 2) Please verify that if foundation materials are found to be free from contamination problems, and if onsite burial is chosen, then the materials will be rubblized prior to burial. Please also specify the location for burial and the methods which will be used to ensure stability of any backfill material used to cover the broken concrete. 3) How will the existing filtration field and septic systems be decommissioned and removed? 4) Please verify that areas beneath [he buildings to be demolished will be tested for contamination from such materials as hydraulic fluids, oils, solvents, antifreeze, etc. prior to fmal burial. Please also verify that any contamination will be properly reported and mitigated. - - - ~ - iiiiiiiiiiiiiiii lilt STATE OF COLORADO 5) We will assess bond issues as part of the ongoing midterm review.