5 Colo. Code Regs. § 1002-36.11
June, 1988 Hearing on Segments 2a and 3
The provisions of 25-8-202(1)(b) and (2); 25-8-204; and 25-8-207 C.R.S. provide the specific statutory authority for adoption of these regulatory amendments. The Commission also adopted, in compliance with 24-4-103(4), and 24-4-103(8)(d), C.R.S., the following statements of basis and purpose and fiscal impact.
BASIS AND PURPOSE:
The standards for cadmium, copper, lead, mercury, and zinc were reviewed in response to a petition by Homestake Mining Company submitted in 1987. Based on additional and more detailed water-quality data for these reaches, it was determined that the standards established in 1981 were inconsistent with the available water-quality data. Changes were therefore made for all parameters except mercury and except for copper in Segment 3. Because available data represented actual instream conditions, no impacts on classified uses were anticipated.
FISCAL IMPACT STATEMENT:
A fiscal analysis indicates that the costs associated with the changes will be limited to the costs for conducting the standards-setting hearing and of making the administrative changes in the rules. No substantial additional costs are thought to accrue due to treatment requirements. Precise evaluation of treatment costs will depend on low-flow rates and concentrations encountered by dischargers. No costs will accrue due to changes in classified uses of the segments.
Parties to the hearing:
Homestake Mining Company
5 CCR 1002-36.11