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 modification of standards on one segment was reviewed.
Upper South Platte segment 3: Temporary modification of ammonia. The Town of Florisant is making progress toward resolution of uncertainty regarding the underlying chronic cadmium, copper and zinc standards. The Commission made no change to the expiration date of 6/30/2017 because the original time allotment was deemed adequate.
PARTIES TO THE RULEMAKING HEARING
2. Resurrection Mining Company5. Peabody Sage Creek Mining and Seneca Coal Company6. Climax Molybdenum Company8. City of Colorado Springs and Colorado Springs Utilities9. Tri-State Generation and Transmission Association, Inc.10. High Country Conservation Advocates11. U.S. Environmental Protection Agency12. Colorado Parks and Wildlife13. Town of Crested Butte and Coal Creek Watershed Coalition14. Public Service Company of Colorado38 CR 03, February 10, 2015, effective 6/30/201538 CR 17, September 10, 2015, effective 12/31/201539 CR 03, February 10, 2016, effective 3/1/201639 CR 03, February 10, 2016, effective 6/30/201639 CR 23, December 25, 2016, effective 12/30/201640 CR 03, February 10, 2017, effective 6/30/201740 CR 09, May 10, 2017, effective 6/30/201741 CR 01, January 10, 2018, effective 1/31/201841 CR 03, February 10, 2018, effective 6/30/201842 CR 04, February 25, 2019, effective 6/30/201943 CR 03, February 10, 2020, effective 6/30/202043 CR 17, September 10, 2020, effective 12/31/202044 CR 01, January 10, 2021, effective 2/14/202144 CR 05, March 10, 2021, effective 6/30/202144 CR 17, September 10, 2021, effective 12/31/202145 CR 17, September 10, 2022, effective 9/30/202245 CR 21, November 10, 2022, effective 11/30/202246 CR 10, May 25, 2023, effective 6/14/2023