This analysis addresses each of the proposed amendments and rules and provides information on affected classes, qualitative and quantitative impacts, the probable costs, a comparison of the probable costs and benefits, whether less costly or less intrusive methods exist for achieving the purpose of the proposed rule, and whether there are alternatives to the proposed rule.

This overview examines the relevant Colorado statutes and rules and set forth how DRMS and CDPHE coordinate the regulation of uranium mining in Colorado. Specifically, this paper examines the in-situ uranium mining project proposed by Powertech Uranium Corporation as well as future Colorado in-situ and conventional uranium operations, Notice of Intents to Prospect (NOI's and uranium milling operations.

Prior to 1977, effect of mine subsidence was not fully considered. A lack of awareness of subsidence potential, combined with urban expansion, resulted in many homes and neighborhoods being built over these old mines. Subsidence over abandoned coal mines is a potential hazard for an estimated 25,000 people and 7,500 houses along the Front Range Urban Corridor (2004 figures).