The U.S. Environmental Protection Agency (EPA) was introduced on December 2, 1970 by President Richard Nixon. The agency is charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress. The EPA's struggle to protect health and the environment is seen through each of its official publications. These publications outline new policies, detail problems with enforcing laws, document the need for new legislation, and describe new tactics to use to solve these issues. This collection of publications ranges from historic documents to reports released in the new millennium, and features works like: Bicycle for a Better Environment, Health Effects of Increasing Sulfur Oxides Emissions Draft, and Women and Environmental Health.

Part I is a supplement to the EMSL-Cincinnati publication "Methods for the Determination of Metals in Environmental Samples" and was prepared to revise and place in the Environmental Monitoring Management Council (EMMC) format certain spectrochemical methods used for metals. Part II, the EMSL-Cincinnati publication "Methods for the Determination of Inorganic Substances in Environmental Samples" was prepared as the continuation of an initiative to gather together a compendium of standardized laboratory analytical methods.

Part I is a supplement to the EMSL-Cincinnati publication "Methods for the Determination of Metals in Environmental Samples" and was prepared to revise and place in the Environmental Monitoring Management Council (EMMC) format certain spectrochemical methods used for metals. Part II, the EMSL-Cincinnati publication "Methods for the Determination of Inorganic Substances in Environmental Samples" was prepared as the continuation of an initiative to gather together a compendium of standardized laboratory analytical methods.