The process of the lead study
Component 1: Outdoor
Community health workers from AYUDA, our partner community organization, collected soil samples in public areas around selected blocks of El Paso County. A total of 500 blocks were sampled. The soil samples collected were analyzed in the Geochemistry laboratory at UTEP. A map of the geographic distribution of lead in soil can be found in the “preliminary results” link. All the identifiable information obtained during our study is confidential and will not be available on the results.
How did we decide which areas to test?
Census tracts from El Paso and AGEB from Cd. Juarez were used to define the geographic sections. Each section was grouped according to population density of approximately 13,000 people + 2, 000 in El Paso and 24,300 people + 2,000 in Cd. Juarez. A total of 50 strata were created. Within each stratum, 10 blocks were randomly selected with a total of 500 blocks selected to participate in the study. This statistical procedure to select the area ensures that results provide an accurate estimate of the entire population in the region.
Component 2: Indoor
A total of 1,200 households are being invited to participate. The households were randomly selected from the blocks chosen according to the procedure described in Component 1. Once the consent is granted, the community health workers conduct a survey and collect samples of soil, dust, and water. This information will help us estimate the children’s risk of exposure to lead in the Paso Del Norte region.