This report is one in a series of volumes published by the United States Environmental Protection Agency (EPA) to provide information of general interest regarding environmental issues associated with specific industrial sectors. The scope of this Sector Notebook covers the manufacturing and production of fertilizers, the formulation of pesticide chemicals (both agricultural and non-agricultural) manufactured at separate facilities, and the production of other miscellaneous agricultural chemicals. It does not include the use, sale, distribution, or storage of such chemicals. The Fertilizer, Pesticide, and Agricultural Chemical Industry is classified by the Office of Management and Budget (OMB) under Standard Industrial Classification (SIC) Industry Group Number 287. This classification corresponds to SIC codes which were established by the OMB to track the flow of goods and services within the economy. Industry Group Number 287 includes SIC codes: 2873-- Nitrogenous Fertilizers: 2874-- Phosphatic Fertilizers; 2875-- Fertilizers, Mixing Only; and 2879-- Pesticides and Agricultural Chemicals, Not Elsewhere Classified (n.e.c). This notebook covers both fertilizer manufacturing and formulating operations including ammonia synthesis, nitric and phosphoric acid production, and the mixing, preparing, and packaging of nitrogenous and phosphatic fertilizers. Establishments engaged in manufacturing fertilizer materials or mixing fertilizers produced at the same establishment are classified under SIC codes 2873 and 2874. Mixing of fertilizer materials, such as compost, potting soil, and fertilizers made in plants not manufacturing fertilizer materials, is classified under SIC code 2875. This notebook does not include the mining or grinding of phosphate rock, which is classified under SIC code 1475, and it also does not include the use or application of fertilizers.