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On August 24, 1992, ATSDR was petitioned to conduct a public health assessment for the Valley Village area of Jefferson County, Kentucky [1]. At a public meeting in July 1992, citizens had expressed concerns about the area’s poor air quality. They wanted a health study conducted for Valley Village to determine if industrial emissions were causing high incidences of cancer [2]. The major sources of air pollution in the area were the Louisville Gas and Electric Company’s Mill Creek Station (LG&E) and the Kosmos Cement plant (Kosmos). The purpose of this health consultation is to address public health concerns by examining current conditions and reviewing available data. ATSDR recieved no comments on this consultation during the public comment period.

In February 1993, ATSDR personnel conducted a site visit to gather additional information. During the site visit, the petitioner requested ATSDR’s assistance in evaluating air quality data and in determining if there were adverse effects on community health such as increases in cancer rates and respiratory disease. Local authorities had determined that LG&E and Kosmos were the major contributors of ozone, nitrogen dioxide, sulfur dioxide, and particulate emissions [3]. Citizens were particularly concerned about the permitted discharges from LG&E [3]. Residential areas, small retail stores, and one elementary school are located near the two facilities [3].

ATSDR reviewed the available 1992 and 1993 air monitoring data from a station located at the elementary school which is also about 300 yards from the LG&E plant. This air monitoring station, known as the Watson Lane station, collects hourly readings for ambient air levels of sulfur dioxide, carbon monoxide, ozone, nitrogen dioxide, and particulates [4, 5]. The Watson Lane air monitoring station was put in place in 1992 as part of the State and Local Air Monitoring Station (SLAM) system.

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