Environmental Protection Agency search

CRS provides information on chemical substances and how they are represented in the Environmental Protection Agency regulations and data systems. A search engine for chemicals by CAS number, name, molecular formula, chemical type, definition, or other data identifiers. 

EPA. 1999b. Public access server search results. U.S. Environmental Protection Agency. HttD //search.eDa.gov/s97is.vis. May,20 1999. 

An extensive literature search revealed no published data on famphur toxicity to aquatic animals. Unpublished studies of acute lethality were, however, conducted with the bluegill (Lepomis mac-rochirus) and rainbow trout (Oncorhynchus mykiss). In those studies, the range in LC50 values at 96 h was 18 to 21 mg/L in bluegills and 4.9 to 5.3 mg/L in rainbow trout. The no-observable-effect concentration at 96 h ranged from 14 to 18 mg/1 in bluegills and was 2.1 mg/L in rainbow trout (U.S. Environmental Protection Agency, OPPTS/OPP/EFED/EEB, personal communication, 30 June 1993). 

In practice there will often be old studies or published papers that can provide adequate information to assess the properties of phase in existing substances. The US Environmental Protection Agency (EPA) has issued useful guidance on searching for literature data (a. 15). 

In the U.S. about 8% of the energy is provided by biomass and almost 90% of this comes from the combustion of wood and wood residues. The use of biomass increased from an installed capacity of 200 megawatts in 1980 to over 7,700 megawatts in 1990. The search for cleaner fuels and landfill restraints are the main reasons for increased biomass utilization. The cost of waste disposal has soared and landfill sites are closing faster than new ones are opening up. The Environmental Protection Agency (EPA) estimated that between 1978 and 1988, 70% of the nation s landfills, about 14,000 sites closed. 

EPA. 1983b. U.S. Environmental Protection Agency. Chemicals identified in human breast milk. A literature search. Office of Pesticides and Toxic Substances. Washington, DC. EPA 560/5-83-009. 

If one s purpose is to determine only the presence or absence in a data base of a specific structure, this can be accomplished with the search option IDENT , as is shown in Figure 11. This program hash-encodes the query structure connection table and searches through a file of hash-encoded connection table for an exact match. The search, which is very fast by substructure search standards, has been designed specifically for those users who, to comply with the Toxic Substances Control Act [26l have to determine the presence or absence of specific compounds in Environmental Protection Agency files. 

Go to this home pagefor the Environmental Protection Agency and use acid rain as a keyword in the agency s search engine to find numerous articles on this subject. 

FRSS Federal Register Search System 150,000 references 1977-present ENVIRONMENTAL PROTECTION AGENCY A chemical index to the daily Federal Register... 

Versar Inc. (1979) Water Related Environmental Fate of 129 Priority Pollutants. A Literature Search. V. Polycyclic Aromatic Hydrocarbons, PCBs and Related Compounds, pp. 36-1 to 36-12. Office Water and Waste Management, U.S. Environmental Protection Agency, Washington DC. 

Selected references for this chapter can he located at the Environmental Protection Agency (EPA) Web site at http //www.epa.gov. The specific Web pages for each citation are not listed as these Web pages are frequently moved. The reader is strongly encouraged to go to the EPA Web site and search based on the following topic areas ... 

EPA. 1999c. Designation of hazardous substances. U.S. Environmental Protection Agency. Code of Federal Regulations, National Archives and Records Administration. 40 CFR 302.4. Http www.access.gpo.gov.nara/cff/cfr-table-search.html. January 15, 2001. 

EPA. 2000b. Drinking water standards and health advisories. Washington, DC U. S. Environmental Protection Agency, Office of Water. Http //www.epa.gov/ow/search.html. January 18, 2001. 

The performance data on me use of chemical reduction and/or filtration have been searched by me U.S. Environmental Protection Agency (US ERA) and summarized m Appendixes A-C as follows ... 

US Environmental Protection Agency (US EPA) (1996) Exposure Factors Handbook. Washington, DC Office of Health and Environmental Assessment, Office of Research and Development, USEPA. Volume I, PB98-124225 Vol. II, PB98-124233 Vol. Ill PB98-124241 and the set of three volumes is PB98-124217. US EPA has also produced a CD-ROM that contains an interactive version of the Exposure Factors Handbook. The CD-ROM has word search capabilities, downloadable tables, hypertext links to various chapters in the document, and key references. 

CAS = Chemical Abstracts Services DOT/UN/NA/IMCO = Department of Transportation/United Nations/North America/International Maritime Dangerous Goods Code EPA = Environmental Protection Agency HSDB = Hazardous Substances Data Bank NCI = National Cancer Institute NIOSH = National Institute for Occupational Safety and Health OHM/TADS = Oi1 and Hazardous Materials/Technical Assistance Data System RTECS = Registry of Toxic Effects of Chemicals Substances SANSS = Structure and Nomenclature Search System... 

One of the first approaches for substructure search was published by Feldmann et al. [7]. They used connection table representations of 2D chemical structures to search for particular substructures within these larger structures. The resulting system — the National Institutes of Health-Environmental Protection Agency (NIH-EPA) Chemical Information System — started in 1973 as a joint project in mass spectrometry and structure searching between the NIH and the EPA [8]. 

In the early days of the U. S. Environmental Protection Agency, the agency asked permission to inspect a Dow plant. When the company refused in 1978, the EPA inspected the plant by flying an airplane above it. Dow sued the EPA for illegal search and seizure, but lost in a case that reached the U. S. Supreme Court.151 Dow is a greener company today. It plans to reduce waste by 50%, losses from spills and leaks by 90%, release of dioxins by 90%, and of toxic chemicals by 75%, by the year 2005.152 Its president describes the third wave of environmentalism which will... 

U.,S. Environmental Protection Agency (1980). Manual of Analytical Method. far the AnalysL i of Pesticides in Humans and Environmental Samples, EPA-600/8-80-038. Healt Effects Re.search Laboratory. Research Triangle Park, NC. 

Superfund Hazardous Waste Site Basic Query Form, http //www.epa.gov/superfund/sites/ query/basic.htm (accessed April 2001). A search on the Environmental Protection Agency s Superfund website revealed that 844 out of 11,116 sites contain lead. 

Before we start the development of a new method, we should ask ourselves whether we really need to develop a new method. In many cases established methods already exist. In some cases, the use of a particular method may even be prescribed by regulatory bodies. Examples are the analysis of pharmaceutical formulations, which can be found in the V.S. Pharmacopeia or methods for environmental pollutants established by the Environmental Protection Agency (EPA). If we suspect that an established method exists, it pays to search in the relevant literature. For example, EPA Method 8310 describes the analysis of polynuclear aromatics in groundwater and wastewater. If we are interested in... 

Use the search engine at this site for the Environmental Protection Agency to find numerous articles related to pesticides, including articles on the recovery of contaminated ecosystems. 

The Registry of Toxic Effects of Chemical Substances (RTECS) is published annually by the US National Institute for Occupational Safety and Health (Ohio). The computerized version, which contains data on over 40000 compounds, is available via the TOXLINE system of the US National Library of Medicine and the Chemical Information Service (CIS), sponsored jointly by the National Institutes of Health and the Environmental Protection Agency, Washington. Within CIS there exists also a powerful structural search system known as SANSS (Structure and Nomenclature Search System) which provides... 

It is hosted by Environmental Protection Agency (EPA) USA to predict the toxicity of compounds [57], It encourages andnses the stmctnre datafile (sdf) format. It has a browser developed from open-source tools to search its data files. The files can be downloaded into any chemical relational database for chemical analog searching to enable model building (Fig. 2.15). 

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