5 Colo. Code Regs. § 1002-37.29
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
The Commission's decision to delay consideration of nutrient criteria until March 2012, resulted in cancelation of the December 2011 review of temporary modifications. Accordingly, the Commission considered the expiration dates of temporary modifications expiring on or before December 31, 2012 in a written comment rulemaking.
The Commission extended the expiration date of the following temporary modification to December 31, 2013. It will be reviewed again in a Temporary Modification hearing in December 2012.
Lower Colorado segment 4e (Cu, Fe)
The Commission extended the expiration date of the following temporary modification to June 30, 2013. It is anticipated that the City of Grand Junction will propose a site-specific temperature standard for consideration at the December 2012 Temporary Modification hearing.
Lower Colorado segment 13b, Persigo Wash from the Grand Junction discharge to the confluence with the Colorado River (Temperature)
The following temporary modifications were deleted because they will have expired as of the effective date of this revision:
Lower Colorado segment 2b (NH3)
Lower Colorado segment 13b (NH3)
Lower Colorado segment 13d (Se, expired 5/31/2011).
5 CCR 1002-37.29