Catalog Search Results
Pub. Date
2002.
Description
Water quality standards in Colorado have been developed and applied in permitting with the simplifying assumption that effluent will be fully mixed with the receiving water at or very near the point of discharge. This assumption typically is incorrect; there often is a significant mixing zone below the point of discharge. In such a case, water quality standards may be exceeded within the mixing zone, even when the effluent discharge is in full compliance...
Pub. Date
2013.
Description
The DWRF is a program to assist public water systems with low interest financing to achieve or maintain compliance with the requirements of the Safe Drinking Water Act and to protect public health. Since 1997, the state has loaned almost $400 million to eligible public water systems.
Pub. Date
2003.
Description
Using the criteria in this guidance, if the Division determines that a pollutant has "reasonable potential," a water quality standards-based limitation for that pollutant will be included in the permit. If the Division determines that no reasonable potential exists, a limit will not be placed in the permit, although monitoring requirements may be placed in the permit under appropriate circumstances.
Pub. Date
1976.
Description
To aid in the preparation of the 303 Water Quality Management Plan the Water Quality Control Division undertook a survey of the Colorado River from Dotsero, Colorado to the Utah border a river segment requiring additional data. This report covers a sampling period extending from October 1973 through September 1974. The main emphasis during the sampling period as the gathering of chemical data although some biological studies were also conducted.
Pub. Date
2008.
Description
This discharge guidance has been developed in accordance with WQP-27, Low Risk Discharges. The Division has not developed a general permit for this category of discharges, and is instead managing the discharge through the development of guidance. When the provisions of this guidance are met, the Division will not actively pursue permitting or enforcement for the discharge from swimming pools, hot tubs, decorative fountains or other similar facilities,...
Author
Pub. Date
2014.
Description
The issue of produced water is a pressing one facing the State. Significant amounts of water are produced from oil and gas operations in Colorado, which has the third largest gas reserves in the country. In 2012, produced water amounted to over 41,000 acre-feet, with over 20,000 acre-feet from the Western Slope alone. There are numbers of complex legal, regulatory, geographic, technical, social, and political considerations involved in any discussion...
Author
Pub. Date
2009.
Description
This report details the results of a study conducted by University of Colorado researchers for the Coal Creek Watershed Coalition on the source of metals in the Coal Creek watershed during high flow. Coal Creek is the main water supply for the Town of Crested Butte in Gunnison County, Colorado.
Pub. Date
2008.
Description
Total Maximum Daily Load (TMDL) is used to determine the maximum amount of a pollutant that a water body may receive and still maintain water quality standards. The mainstem of Silver Creek from a point immediately below the Town of Ricos water supply diversion to the confluence with the Dolores River is included in the 2006 303(d) list for exceeding the Aquatic Life use standards for zinc and cadmium.
Author
Pub. Date
2006.
Description
This report details the results of a study conducted by University of Colorado researchers for the Coal Creek Watershed Coalition on the source of metals in the Coal Creek watershed during low flow. Coal Creek is the main water supply for the Town of Crested Butte in Gunnison County, Colorado.
Author
Pub. Date
2015.
Description
Dramatic increases in the number of oil and gas extraction wells in Colorado have raised environmental concerns about the potential effects of oil and gas activities, with active debates about the risks of groundwater contamination near the top of the list. Two of the biggest concerns related to potential groundwater contamination are methane gas migration and groundwater contamination by flowback and produced water, either through spills impacting...
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