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EVALUATION OF U.S. EPA’S SCREENER QUESTIONNAIRE FOR THE AQUATIC ANIMAL PRODUCTION INDUSTRY AND COMPARISON TO USDA DATA

In August 2002, the U.S. Environmental Protection Agency (EPA) proposed national regulations to control pollutant discharges from the wastewaters of the aquatic animal production (AAP) industry. In developing this proposed rule, EPA collected information from the AAP industry by using a two-phase sample design. In the first phase, EPA conducted a census of the industry using a screener questionnaire that requested basic information to better identify and define the population. In the second phase, EPA used a second questionnaire to collect detailed site-specific technical and financial information from a sample of the screener questionnaire respondents. After adjusting for nonresponse in the screener questionnaire responses, EPA estimated that 3,075 facilities conducted AAP in 2000 compared to 4,028 facilities identified by the 1998 Census of Aquaculture conducted by the U.S. Department of Agriculture (USDA). This paper evaluates EPA’s screener questionnaire design and compares its results to the USDA Census of Aquaculture and other data sources from the USDA.