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Electronic equipment contain a number of hazardous constituents such as heavy metals that if disposed of in a landfill, harmful chemicals could leach out and contaminate groundwater and soil.
Electronic equipment like computer monitors, central processing units (CPUs), keyboards, mice, scanners, and cell phones contain a number of hazardous constituents such as lead, mercury, arsenic, cadmium, chromium and silver. Many of these constituents are found on the circuit boards or in the glass. Computers also contain a battery such as nickel-cadmium, lithium or sealed lead acid. These constituents are not a concern while the equipment is in...
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.
"The Clear Creek watershed is a medium size watershed that is a tributary to the South Platte River. The mainstem of Clear Creek from Silver Plume to the Farmers Highline Canal diversion in Golden, and several tributaries including South Clear Creek Leavenworth Creek, Mad Creek, Fall River, and Trail Creek, appear on the Colorado 2006 303(d) list for excessive dissolved cadmium, copper, lead, and zinc. These metals impair the Aquatic Life Cold 1 or...
The purpose of this document two fold. First, it is to provide a comprehensive background summary of the Eagle Mine Superfund Site, the remedial activities that have taken place to date and to show the commensurate improvement in water quality and load reduction that have occurred as a result of the remedial actions. Secondly, the purpose of this document is to analyze the available metals loading data to determine if newly proposed water quality...
The Arkansas River drainage basin lies south and west of the town of Leadville. The listed segments on this 303(d) listed portion of the upper Arkansas account for 163 miles of the 1,450 mile length of river. Many tributaries flow into the Arkansas River including Lake Creek, Chalk Creek, and Evans Gulch, which are also listed on the 1998 303(d) list for elevated metal concentrations.