Water Quality Aspects of an Intermittent Stream and Backwaters in an Urban North Texas Watershed

Water Quality Aspects of an Intermittent Stream and Backwaters in an Urban North Texas Watershed

Date: August 2002
Creator: Taylor, Ritchie Don
Description: Pecan Creek flows southeast through the City of Denton, Texas. Characterized as an urban watershed, the basin covers approximately 63.5 km2. Pecan Creek is an intermittent stream that receives nonpoint runoff from urban landuses, and the City of Denton's wastewater treatment plant, Pecan Creek Water Reclamation Plant, discharges effluent to the stream. Downstream from the City of Denton and the wastewater treatment plant, Pecan Creek flows about 6,000 m through agricultural, pasture, and forested landscapes into Copas Cove of Lake Lewisville, creating backwater conditions. Pecan Creek water quality and chemistry were monitored from August 1997 to October 2001. Water quality was influenced by seasonal, spatial, climatic, and diurnal dynamics. Wastewater effluent discharged from the Pecan Creek Water Reclamation Plant had the greatest influence on water quality of the stream and backwaters. Water quality monitoring of Pecan Creek demonstrated that dissolved oxygen standards for the protection of aquatic life were being achieved. Water quality modeling of Pecan Creek was completed to assess future increases in effluent flow from the Pecan Creek Water Reclamation Plant. Water quality modeling indicated that dissolved oxygen standards would not be achieved at the future effluent flow of 21 MGD and at NPDES permitted loadings. Model results ...
Contributing Partner: UNT Libraries
Clean Water Act and Pollutant Total Maximum Daily Loads (TMDLs)

Clean Water Act and Pollutant Total Maximum Daily Loads (TMDLs)

Date: January 17, 2014
Creator: Copeland, Claudia
Description: This report discusses the total maximum daily load (TMDL) program which regulates pollutants to ensure that water quality standards can be attained; section 303(d) of the Clean Water Act requires states to identify waters that are impaired by pollution, even after application of pollution controls. The report focuses on new challenges facing the TMDL program, including more complex TMDLs, larger scale impairments, and nonpoint sources.
Contributing Partner: UNT Libraries Government Documents Department
Bacterial Survey of Representative Denton County Wells with Special Reference to Sanitation

Bacterial Survey of Representative Denton County Wells with Special Reference to Sanitation

Date: June 1937
Creator: Roberts, Sally Stevens
Description: This thesis aimed to study the seventy-two representative wells of Denton County and to determine the possibilities of infection with typhoid organism. The sanitary survey and the test for Colon-Aerogenes bacteria show that 55% of the 72 wells studied are unsanitary, 27% are sanitary, and 18% are doubtful.
Contributing Partner: UNT Libraries
Controversies over Redefining "Fill Material" Under the Clean Water Act

Controversies over Redefining "Fill Material" Under the Clean Water Act

Date: January 23, 2014
Creator: Copeland, Claudia
Description: This report discusses the 2002 rule (the Clean Water Act), focusing on how it changes which material and types of activities are regulated under Section 404 and the significance of these issues, especially for the mining industry.
Contributing Partner: UNT Libraries Government Documents Department
Drinking Water State Revolving Fund (DWSRF): Program Overview and Issues

Drinking Water State Revolving Fund (DWSRF): Program Overview and Issues

Date: April 10, 2014
Creator: Tiemann, Mary
Description: This report discusses the Safe Drinking Water Act (SDWA) Amendments of 1996, which authorized a drinking water state revolving loan fund (DWSRF) program. The program was intended to help public water systems finance infrastructure projects that were needed to comply with federal drinking water regulations and to meet the Act's health objectives. It includes an overview of funding, allotments and set-asides, drinking water infrastructure needs, program issues, and legislative activity.
Contributing Partner: UNT Libraries Government Documents Department
EPA and the Army Corps' Proposed Rule to Define "Waters of the United States"

EPA and the Army Corps' Proposed Rule to Define "Waters of the United States"

Date: March 27, 2014
Creator: Copeland, Claudia
Description: This report describes the March 25 proposed rule to define "waters of the United States," particularly focused on clarifying the regulatory status of waters located in isolated places in a landscape, the types of waters with ambiguous jurisdictional status following the Supreme Court's ruling. It includes a table comparing the proposal to existing regulatory language.
Contributing Partner: UNT Libraries Government Documents Department
Safe Drinking Water Act (SDWA): A Summary of the Act and Its Major Requirements

Safe Drinking Water Act (SDWA): A Summary of the Act and Its Major Requirements

Date: February 5, 2014
Creator: Tiemann, Mary
Description: This report summarizes the Safe Drinking Water Act (SDWA) and its major programs and regulatory requirements. This report includes the drinking water security provisions added to the SDWA by the Public Health Security and Bioterrorism Preparedness and Response Act of 2002 (P.L. 107-188), and lead reduction provisions as amended by P.L. 111-380. It also outlines amendments made in December 2013 by P.L. 113-64 (H.R. 3588) to explicitly exempt fire hydrants from coverage under the act's lead plumbing restrictions.
Contributing Partner: UNT Libraries Government Documents Department
EPA and the Army Corps' Proposed Rule to Define "Waters of the United States"

EPA and the Army Corps' Proposed Rule to Define "Waters of the United States"

Date: April 21, 2014
Creator: Copeland, Claudia
Description: This report describes the March 25 proposed rule to define "waters of the United States," particularly focused on clarifying the regulatory status of waters located in isolated places in a landscape, the types of waters with ambiguous jurisdictional status following the Supreme Court's ruling. It includes a table comparing the proposal to existing regulatory language.
Contributing Partner: UNT Libraries Government Documents Department
Safe Drinking Water Act: Selected Regulatory and Legislative Issues

Safe Drinking Water Act: Selected Regulatory and Legislative Issues

Date: January 13, 2010
Creator: Tiemann, Mary
Description: This report provides an overview of the Safe Drinking Water Act (SDWA), and examines recent issues such as infrastructure funding needs, regulatory compliance issues, and concerns caused by the detection of unregulated contaminants in drinking water.
Contributing Partner: UNT Libraries Government Documents Department
Safe Drinking Water Act: Selected Regulatory and Legislative Issues

Safe Drinking Water Act: Selected Regulatory and Legislative Issues

Date: July 27, 2010
Creator: Tiemann, Mary
Description: This report provides an overview of the Safe Drinking Water Act (SDWA), and examines recent issues such as infrastructure funding needs, regulatory compliance issues, and concerns caused by the detection of unregulated contaminants in drinking water.
Contributing Partner: UNT Libraries Government Documents Department
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