GENERAL54238 - Laserfiche WebLink

Home Browse Search

MINERS INC• CONSTRUCTION SPECIALISTS MINING and CIVIL CONSTRUCTION January 24, 1994 Delta-Montrose Electric Assoc. P.O. Box 59 Delta, CO 81416 Attention Kent E. Davenport Subject: Hawks Nest Coal Silo Demolition Gentlemen; III IIIIIIIIIIIII III The purpose of this letter is to further define verbal agreements made between Delta- Montrose Electric Association (DMEA) and Miners Inc. (Miners) in relation to the demolition of the Hawks Nest Coal Silos. Miners anticipates that the State of Colorado will issue a Notice to Proceed on January 31, 1994. Miners will mobilize on to the Hawks Nest site immediately. The enclosed schedule is a revision of the schedule that was given to you at our meeting on January 13. Please note that the revised scheduled time for blasting Silo #1 and Silo #2 is on February 11 and 18, respectfully. It is our understanding that you will have crews on site and on standby during these periods. The crews will consist of one four man power line crew and one two man substation crew. The estimate of costs are $200 per crew hour for the power line crew and $100 per crew hour for the substation crew. A Four hour minimum is assumed for each crew per each silo. This four hour period assumes no damage to any power line or substation items. Additionaly DMEA has chosen to configure the Transformer at the substation on "one shot." Miners assumes that this will serve to prevent any damage and is dependent on the knowledge of DMEA. Miners will assume responsibility for damage to the power lines or substation items if the blast results in a peak particle velocity that exceeds two inches per second as defined in the project specifications. Miners has contacted an engineer with Public Service of Colorado about possible damage that could result to the transformer from excessive vibration. He stated, in his opinion, that provided the transformer was set on a solid foundation no damage should result from vibration. Miners is anticipating conducting a preblast survey at the site on February 7 and 8. We will contact John Sulkey at 874-2365 for access to the substation for inspection. 9137 F.. Mineral Circle F,nglewood, Colorado 80112 Phone: 3031.90-4840 • FAX 303/790-4550