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The Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (CERCLA), also known as "Superfund", requires that the criteria provided by the Hazard Ranking System (HRS) be used to make a list of national priorities of the known releases or threatened releases of hazardous substances, pollutants, or contaminants in the United States. [2]
In December 2020 the EPA announced new clearance levels for lead-contaminated dust from chipped or peeling lead-based paint. This dust can remain at the sites of lead removal activities, such as pre-1978 homes and childcare facilities. The change strengthened federal lead clearance level restrictions for the first time in almost 20 years. [205]
The Environmental Protection Agency (EPA) is an independent agency of the United States government tasked with environmental protection matters. [2] President Richard Nixon proposed the establishment of EPA on July 9, 1970; it began operation on December 2, 1970, after Nixon signed an executive order. [3]
Standards for performing a Phase I site assessment have been promulgated by the US EPA [1] and are based in part on ASTM in Standard E1527-13. [ 2 ] If a site is considered contaminated, a Phase II environmental site assessment may be conducted, ASTM test E1903, a more detailed investigation involving chemical analysis for hazardous substances ...
EPA created the database to provide a consistent approach to risk assessment practices across the various environmental laws that the Agency implemented and enforced. [citation needed] The program was created by the EPA in 1985. Initially, the goal of the program was to foster consistency's in the agency's evaluation of chemical toxicity. [1]
The Science Advisory Board (SAB) is a United States group of independent scientists selected by the Administrator of the U.S. Environmental Protection Agency (EPA). The board provides advice to the agency on the scientific and technical aspects of environmental problems and issues.
The EPA reviewed this NAAQS in 1985 and 1996, and in both cases concluded that the existing standard was sufficient. The most recent review by the EPA occurred in 2010, resulting in a new 1-hour NO 2 primary standard set at 100 ppb; the annual average of 0.053 ppm remained the same. Also considered was a new 1-hour secondary standard of 100 ppb.
Contaminants of emerging concern (CECs) is a term used by water quality professionals to describe pollutants that have been detected in environmental monitoring samples, that may cause ecological or human health impacts, and typically are not regulated under current environmental laws.