Catalog Search Results
Author
Pub. Date
2012.
Description
This memorandum summarizes major state and federal water quality control policies pertaining to nutrients; describes the major provisions of the new Section 17 of Regulation 31 that establishes interim numeric values for phosphorus, nitrogen and chlorophyll; describes the new Regulation 85 that establishes numerical effluent limitations for domestic wastewater treatment plants and other wastewater dischargers; summarizes the rule review process of...
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
2001.
Description
This document presents the guidelines for the collection of baseline water quality and overburden geochemistry data. The purpose of a baseline data-collection program is to characterize the pre-mining environment. Once collected, the data may be used to help evaluate the potential hydrologic impacts that may occur as a result of coal mining.
Pub. Date
2002.
Description
Abandoned mine problems are being well documented nationwide. In Colorado there are over 23,000 hazardous mines and 604 miles of streams impacted by past mining. The Colorado Inactive Mine Reclamation Program (imp) began in 1980 and has safeguarded over 6,127 mines and reclaimed 1539 acres of abandoned mined land statewide.
Author
Pub. Date
2007.
Description
This document is not a regulation nor is it intended as such. It is intended to provide information and direction to applicants and their consultants in an effort to help them meet the requirements of Regulation No. 22. This guidance document is to be used in combination with Regulation No. 22. Parties seeking site location approval should obtain a copy and be familiar with Regulation No. 22.
Pub. Date
2009.
Description
Small public water systems faced with challenges associated with removing naturally occurring contaminants from potable water supplies often find the path to compliance challenging. Prior to 1996, all water systems were required to use centralized treatment systems for the removal of naturally occurring contaminants, such as radionuclide particles. Several amendments to the Safe Drinking Water Act (SDWA) have expanded the options small water system...
Pub. Date
2008.
Description
The Division has identified 2018 nitrate visibility impacts at Wheeler Peak (WHPE) Wilderness Area that trigger interstate consultation with New Mexico. Also, Colorado nitrate impacts are of concern at two other nearby New Mexico Class I areas (BAND & SAPE), Canyonlands National Park (CANY) in Utah, and Wichita Mountains NWR Wilderness in Oklahoma. The "concern" visibility impacts are at or slightly above the arbitrary threshold criteria established...
Author
Pub. Date
[2014]
Description
Launched in 2011, ReNUWIt is the National Science Foundation's first Engineering Research Center dedicated to civil infrastructure and water systems. ReNUWIt encompasses a diverse team of researchers who collaborate with entrepreneurs and practitioners on innovative solutions for urban water infrastructure challenges. This diverse team specifically addresses the diffusion of new technologies in complex systems.
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