University of Texas at El Paso
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Randomly selected houses are receiving invitations asking for their participation in the "Encuentros: Community Lead Project."
Determining the Geography

  • The first step was to determine the geographic units of study by population size.  (In El Paso, census tracts  from the U.S. Bureau of the Census were utilized to define strata)
  • Ten blocks were selected from each stratum for the field study.
  • Ten percent of parks and schools in each stratum were also selected for study.
  • Testing sites were selected based upon our estimate of children’s exposure to the soil (their accessibility and use by the general public especially by children).
  • Test results will be used to estimate the geographic distribution of lead in the binational region.