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This paper examines conceptual and methodological issues in the analysis of environmental justice through use of the case of lead‐exposure health risks. Researchers face important obstacles in measuring variable risks among population subgroups. The case of lead exposure, however, illustrates the dramatic potential where adequate data exist for identifying and correcting significant inequities in risk exposure. Despite sharp reductions in the general population's exposure to lead since the 1970s, substantial numbers of minority and low‐income children continue to exhibit unacceptably high blood‐lead levels due primarily to exposure to lead‐based paint. Resolving environmental inequities in this and similar instances requires solid documentation of the risk and better integration of equity issues with other policy demands such as the call for cost‐effective environmental policy.

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We retrospectively reviewed 3 679 pediatric records from King/Drew Medical Center, south central Los Angeles, between 1991 and 1994. Blood lead levels of children were followed to age 18 y. Patients were not referred specifically for lead poisoning. The sample was primarily Latino. Geometric mean blood lead peaked at 6.7 micrograms/dl (0.32 mumol/l) between 2 and 3 y of age. There was a downward secular trend and a seasonal trend. Males had higher lead levels than females. Children who lived in several zipcode areas, in which the lowest family incomes were reported, had higher lead levels. More Latino children had higher lead levels than African American children. Latino children (i.e., 20.2%) who were 1-5 y of age had blood lead levels that were > or = 10 micrograms/dl. Young Latino children in this zone of Los Angeles may be at increased risk for lead exposure.

Environmental policy and politics in the United States have changed dramatically over the past three decades. What began in the late 1960s as an heroic effort by an incipient environmental movement to conserve dwindling natural resources and prevent further deterioration of the air, water, and land has been transformed over more than three decades into an extraordinarily complex, diverse, and often controversial array of environmental policies. Those policies occupy a continuing position of high visibility on the political agenda at all levels of government, and environmental values are widely embraced by the American public. Yet throughout the 1990s environmental policies and programs were characterized as much by sharp political conflict as by the consensus over policy goals and means that reigned during the early to mid-1970s. As the twenty-first century approaches, there is considerable value in looking back at this exceptional period to under-stand the nature of the transformation and its implications for the future.