Code of Colorado Regulations
1000 - Department of Public Health and Environment
1002 - Water Quality Control Commission (1002 Series)
5 CCR 1002-33 - REGULATION NO. 33 - CLASSIFICATIONS AND NUMERIC STANDARDS FOR UPPER COLORADO RIVER BASIN AND NORTH PLATTE RIVER (PLANNING REGION 12)
Section 5 CCR 1002-33.40 - STATEMENT OF BASIN SPECIFIC STATUTORY AUTHORITY AND PURPOSE DECEMBER 2006 RULEMAKING REGARDING TEMPORARY MODIFICATIONS, EFFECTIVE MARCH 4, 2007

Current through Register Vol. 47, No. 17, September 10, 2024

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 recently restructured section 31.7 and established an annual rulemaking hearing to review temporary modifications (regardless of the basis) that are due to expire in the two years following the rulemaking hearing. In this hearing, the Commission considered evidence as discussed in subsections 31.7 (b) and (c) to determine whether the temporary modification should be modified, eliminated or extended.

The Commission deleted the temporary modifications for the following segments thereby allowing the underlying standards to go into effect:

Blue River segment 7: no Cd(ac), Cd(ch)=5.2, Cu(ch)=79, Pb(ch)=6.7, no Zn(ac), Zn(ch)=1,380

Blue River segment 12: Zn(ch) 850 Upper

Yampa segment 13d: Se(ac/ch) 60

Because parties are working to resolve uncertainty and are on schedule to address these segments at the regularly scheduled basin-wide rulemaking (June 2008), the Commission took no action on the temporary modifications for the following segments, leaving their expiration dates unchanged.

Blue River segment 6: Cd(ch)=2.3, Cu(ch)=17, no Zn(ac), Zn(ch)=654

Eagle River segment 5a: seasonal temporary modification for zinc

Eagle River segment 5b: seasonal temporary modification for zinc

Eagle River segment 5c: seasonal temporary modification for zinc

Eagle River segment 7b: seasonal temporary modification for zinc

PARTIES TO THE RULEMAKING HEARING