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Recovery of the Fish Population of a Municipal Wastewater Dominated, North Texas Creek After a Major Chlorine Disturbance

Description: This study evaluated the effects of a major chlorine disturbance on fish communities in Pecan creek by the City of Denton's Pecan Creek Water Reclamation Plant. Fish communities in Pecan Creek were sampled using a depletion methodology during February, April, July, and November, 1999. February and April sampling events showed that the fish communities were severely impacted by the chlorine. Sampling during July and November showed fish communities recovered in Pecan Creek. The first-twenty minu… more
Date: August 2002
Creator: Maschmann, Gerald F.
Partner: UNT Libraries
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Perchlorate Contamination of Drinking Water: Regulatory Issues and Legislative Actions

Description: This report reviews perchlorate water contamination issues and developments. Concern over the potential health risks of perchlorate exposure has increased, and some states and members of Congress have urged the Environmental Protection Agency (EPA) to set a drinking water standard for perchlorate.
Date: February 3, 2006
Creator: Tiemann, Mary
Partner: UNT Libraries Government Documents Department
open access

Perchlorate Contamination of Drinking Water: Regulatory Issues and Legislative Actions

Description: This report reviews perchlorate water contamination issues and developments. Concern over the potential health risks of perchlorate exposure has increased, and some states and members of Congress have urged the Environmental Protection Agency (EPA) to set a drinking water standard for perchlorate.
Date: January 10, 2007
Creator: Tiemann, Mary
Partner: UNT Libraries Government Documents Department
open access

Perchlorate Contamination of Drinking Water: Regulatory Issues and Legislative Actions

Description: Perchlorate is the explosive component of solid rocket fuel, fireworks, road flares, and other products. Used mainly by the Department of Defense (DOD) and related industries, perchlorate also occurs naturally and is present in some organic fertilizer.This report reviews perchlorate water contamination issues and recent developments.
Date: November 9, 2007
Creator: Tiemann, Mary
Partner: UNT Libraries Government Documents Department
open access

The ScCl3-Sc System

Description: Experimental data supporting lower valence halides of scandium were not found in the literature. Our investigation was of the phase diagram of the ScCl3-Sc system, and also the vapor pressure-composition isotherm (at 960 degree) for this system. Investigation of the ScCl3-Sc system presented particular difficulties in comparison with analogous systems for rare earth elements in that ScCl3 is highly volatile (boiling pt. = 967 degree); according to our data the vapor pressure is 512 mm Hg measur… more
Date: April 1964
Creator: Polyachenok, O. G. & Novikov, G. I.
Partner: UNT Libraries Government Documents Department
open access

Perchlorate Contamination of Drinking Water: Regulatory Issues and Legislative Actions

Description: This report reviews perchlorate contamination issues and related developments. Perchlorate is the explosive component of solid rocket fuel, fireworks, road flares, and other products. Used heavily by the Department of Defense (DOD) and related industries, perchlorate also occurs naturally and is present in some organic fertilizer. This soluble, persistent compound has been detected in drinking water supplies, especially in California. It also has been found in milk and many foods.
Date: August 6, 2009
Creator: Tiemann, Mary
Partner: UNT Libraries Government Documents Department
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