5 Colo. Code Regs. § 1002-34.46
The provisions of C.R.S. 25-8-202(1)(a), (b) and (2); 25-8-203; 25-8-204; and 25-8-402; provide the specific statutory authority for adoption of these regulatory amendments. The Commission also adopted in compliance with 24-4-103(4) C.R.S. the following statement of basis and purpose.
BASIS AND PURPOSE
Pursuant to the requirements in the Basic Standards (at 31.7(3)), the Commission reviewed the status of temporary modifications scheduled to expire before December 31, 2017, to determine whether the temporary modification should be modified, eliminated or extended. Temporary modifications of standards on 3 segments were reviewed.
Animas River segment 3b: Temporary modifications of the cadmium, copper and zinc standards. The Town of Silverton has presented evidence that they are making progress on the plan for eliminating the need for the temporary modification. The Commission made no change to the expiration date of 12/31/2017 as the original time allotment was deemed adequate.
La Plata et al. segments 7a and 8c: Temporary modifications of the ammonia standards for these segments were extended to 6/30/2018. The Division is working with small domestic dischargers on these segments to explore the possibility of proposing discharger specific variances. Progress continues to be made to improve water treatment for these segments.
PARTIES TO THE RULEMAKING HEARING
5 CCR 1002-34.46