Code of Colorado Regulations
1000 - Department of Public Health and Environment
1002 - Water Quality Control Commission (1002 Series)
5 CCR 1002-42 - REGULATION NO. 42 - SITE-SPECIFIC WATER QUALITY CLASSIFICATIONS AND STANDARDS FOR GROUND WATER
Section 5 CCR 1002-42.27 - STATEMENT OF BASIS, SPECIFIC STATUTORY AUTHORITY, AND PURPOSE: AUGUST 13, 2001 HEARING
SPECIFIC STATUTORY AUTHORITY
The provisions of C.R.S. 25-8-202; 25-8-203; and 25-8-204 provide the specific statutory authority for adoption of these regulatory provisions. The Commission has adopted in compliance with C.R.S. 24-4-103(4) the following statement of basis and purpose.
BASIS AND PURPOSE
In this rulemaking proceeding, the Commission adopted changes that were generally of a housekeeping nature to update the regulation, to make it easier to use, to remove unnecessary tables, to correct figures of specified areas, and to improve the overall quality of the figures (maps) of specified areas.
The changes made to update the regulation included adding references to the index and location map of classified areas and removing unnecessary tables from section 42.7 "Rocky Flats Area, Jefferson and Boulder Counties".
In 1991, the Commission adopted ground water classifications and standards for the Rocky Flats specified area. The classifications adopted by the Commission included Domestic Use-Quality, Agricultural Use-Quality, and Surface Water Protection. The standards were listed in Tables 1-6. A second rulemaking hearing was held in 1996 to consider changes to the classification and standards for ground water at the Rocky Flats specified area. As a result of the hearing the Commission revised the classification and standards by deleting the Domestic and Agricultural Use Classifications and Standards, deleting Table 5, and amending Table 6. Tables 1 through 4 are ground water standards tables from Regulation 41 "The Basic Standards for Ground Water", and they only apply to the Domestic and Agricultural Use Classifications. Table 5 was deleted by the Commission. Therefore, Tables 1 through 5 have been removed from section 42.7 because they are no longer applicable due to the change in ground water classifications and standards adopted by the Commission in the 1996 rulemaking hearing. Since Tables 1 through 5 have been removed from section 42.7 , Table 6 will be referenced only by its title "Site-Specific Radionuclide Standards".
In the previous triennial review hearing modified figures, prepared using Geographic Information System technology, were adopted by the Commission. Inaccuracies were noted in the specified area boundaries on several of the reproduced figures. These specified area boundaries have been corrected to conform to the specified area boundaries depicted on the original figures adopted by the Commission at the time of the classification hearings. In order to improve the overall quality and usefulness of the figures in Regulation 42, a new set of figures were prepared by the WQCD and Colorado Oil and Gas Conservation Commission. The new figures show greater mapping detail and specified area boundaries highlighted by a heavy solid line which will reproduce with greater clarity in black and white.
