http://web.njit.edu/~pro3/NJIT/Options/Opt-S05Border/ANAPRA.pdf
(published 2004)
Sunday, December 2, 2007
Lead particulates in air at UTEP monitor site
Lead: (quarterly mean in micrograms/cubic meter) El Paso, TX
All the data points are from the East Robinson UTEP monitor site.
This is a chart of the quarterly Pb (lead) readings for the eleven years.
The values begin to get smaller after the smelter closed, in 2/1999
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