Environmental Protection Agency bacteria

A less direct effect of sedimentation is the tendency of particles of sand, silt, mud, clay, and other sediments to adsorb pesticides, bacteria, toxic metals, and other harmful substances. The U.S. Environmental Protection Agency has estimated that of the 300 million cubic yards (228 million cubic meters) dredged in the United States each year, up to 12 million cubic yards (9 million cubic meters) are so badly contaminated that they require special handling. 

The purpose of this example is to demonstrate the efficacy of a silver composition of the present invention against the bacteria that cause tuberculosis. This example describes the procedures for evaluation of the present invention for tuberculocidal efficacy. The methodology is based on the Tuberculocidal Activity Test Method as accepted by the EPAon Dec. 11, 1985. [Refer to United States Environmental Protection Agency, 1986. Office of Pesticides and Toxic Substances. Data Call-In Notice for Tubercuolocidal Effectiveness Data for All Antimicrobial Pesticides with Tuberculocidal Claims. (Received Jun. 13, 1986). 

Lundgren, D.G., 1971. Inorganic Sulfur Oxidation by Iron Oxidizing Bacteria. Water pollution control research series. Contract No. 14010 DAY, Environmental Protection Agency, Water Quality Office, Washington, DC, 149 pp. 

Levels of [N03] in waste water are controlled by legislation, limits being recommended by the World Health Organization, the Environmental Protection Agency (in the US) and the European Community. Nitrites, because of their toxicity, must also be removed. Methods of nitrate removal include anion exchange, reverse osmosis (see Box 15.3), and denitrification. The last process is a biological one in which certain anaerobic bacteria reduce [N03] and [N02] to N2 ... 

U.S. Environmental Protection Agency (2000). Draft Implementation Guidance for Ambient Water Quality Criteria for Bacteria-1986, EPA 823-D-OO-OOl, Office of Water, USEPA, Washington, DC. 

Sterilants are strictly defined by the US Environmental Protection Agency as substances that totally destroy all forms of life, including viruses, bacteria, fungi, and their spores on inanimate surfaces, in water, or in the air. Many substances that render objects microbiologic-ally safe for certain applications (i.e., reduce the level of living microorganisms below some predetermined level) are also commonly referred to as sterilants. 

In 1974, the Safe Drinking Water Act was passed by the US Congress and the Environmental Protection Agency (EPA) took responsibility for ensuring the safety of water supplies. The EPA proposed a list of materials that carry potential hazards when present in drinking water. Maximum allowable levels were set for more than a dozen inorganic species (As, Ba, B, Cd, Cr(VI), Cu, CN, F , Pb, NO3, NO2, Se, Ag) and for about the same number of organic pesticides. Turbidity and the amount of coli-form bacteria were also limited. Additionally, secondary... 

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