Fluoride in Drinking Water
Fluoride in Drinking Water

Author: National Research Council

Publisher: National Academies Press

Published: 2007-01-22

Total Pages: 531

ISBN-13: 030910128X

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Most people associate fluoride with the practice of intentionally adding fluoride to public drinking water supplies for the prevention of tooth decay. However, fluoride can also enter public water systems from natural sources, including runoff from the weathering of fluoride-containing rocks and soils and leaching from soil into groundwater. Fluoride pollution from various industrial emissions can also contaminate water supplies. In a few areas of the United States fluoride concentrations in water are much higher than normal, mostly from natural sources. Fluoride is one of the drinking water contaminants regulated by the U.S. Environmental Protection Agency (EPA) because it can occur at these toxic levels. In 1986, the EPA established a maximum allowable concentration for fluoride in drinking water of 4 milligrams per liter, a guideline designed to prevent the public from being exposed to harmful levels of fluoride. Fluoride in Drinking Water reviews research on various health effects from exposure to fluoride, including studies conducted in the last 10 years.

Nonattainment New Source Review, Us Environmental Protection Agency Regulation, 2018
Nonattainment New Source Review, Us Environmental Protection Agency Regulation, 2018

Author: Law Library

Publisher: Createspace Independent Publishing Platform

Published: 2018-08-24

Total Pages: 38

ISBN-13: 9781726194518

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Nonattainment New Source Review (NSR) (US Environmental Protection Agency Regulation) (EPA) (2018 Edition) The Law Library presents the complete text of the Nonattainment New Source Review (NSR) (US Environmental Protection Agency Regulation) (EPA) (2018 Edition). Updated as of May 29, 2018 The EPA is finalizing revisions to the regulations governing the nonattainment new source review (NSR) program mandated by section 110(a)(2)(C) of the Clean Air Act (CAA or Act). These revisions implement changes to the preconstruction review requirements for major stationary sources in nonattainment areas in interim periods between designation of new nonattainment areas and adoption of a revised State Implementation Plan (SIP). The revisions conform the nonattainment permitting rules that apply during the SIP development period following nonattainment designations before SIP approval to the Federal permitting rules applicable to SIP-approved programs. The changes are intended to provide a consistent national program for permitting major stationary sources in nonattainment areas under section 110(a)(2)(C) and part D of title I of the Act. In particular, these changes conform the regulations to the NSR reform provisions that EPA promulgated by notice dated December 31, 2002, except that these changes do not include the NSR reform provisions for "clean units" or "pollution control projects," which the U.S. Court of Appeals for the D.C. Circuit vacated in New York v. EPA, 413 F.3d 3 (DC Cir. 2005). In addition, these changes include an interim interpretation of the NSR reform provision for a "reasonable possibility" standard for recordkeeping and reporting requirements, in accordance with that court decision. This interim interpretation to the "reasonable possibility" standard applies for appendix S purposes, pending the completion of rulemaking to develop a more complete interpretation. This book contains: - The complete text of the Nonattainment New Source Review (NSR) (US Environmental Protection Agency Regulation) (EPA) (2018 Edition) - A table of contents with the page number of each section

Sediment Classification Methods Compendium
Sediment Classification Methods Compendium

Author: United States. Environmental Protection Agency. Sediment Oversight Technical Committee

Publisher:

Published: 1992

Total Pages: 234

ISBN-13:

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This document is a compendium of scientifically valid and accepted methods that can be used to assess sediment quality and predict ecological impacts...the intent here is to provide the most useful overall measures or predictors of ecological impacts currently in use rather than procedures that may have limited application outside of a particular regulatory framework... parag The information provided in the compendium on the relative strengths and weaknesses of the different assessment methods can provide assistance in selecting the appropriate methods.

Urban Stormwater Management in the United States
Urban Stormwater Management in the United States

Author: National Research Council

Publisher: National Academies Press

Published: 2009-03-17

Total Pages: 611

ISBN-13: 0309125391

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The rapid conversion of land to urban and suburban areas has profoundly altered how water flows during and following storm events, putting higher volumes of water and more pollutants into the nation's rivers, lakes, and estuaries. These changes have degraded water quality and habitat in virtually every urban stream system. The Clean Water Act regulatory framework for addressing sewage and industrial wastes is not well suited to the more difficult problem of stormwater discharges. This book calls for an entirely new permitting structure that would put authority and accountability for stormwater discharges at the municipal level. A number of additional actions, such as conserving natural areas, reducing hard surface cover (e.g., roads and parking lots), and retrofitting urban areas with features that hold and treat stormwater, are recommended.