the U.S. Census Bureau. Spatial analysis was conducted using
Network Analyst in ArcGIS 9.3. Data from the 2010 U.S. Census, the
most recent data available, was used. Road network data, based on
E911RDS roads dataset, was used to create 4.8 km (3 miles) and
8.05 km (5 miles) network service areas from each store location.
The 8.05 km is based on the study by Saphores et al. (2006), which
found that households were more willing to bring e-waste for
recycling in California if the collection facility is located within 5
miles (8.05 km). Census blocks that had their centroid in the 4.8-
and 8.05-km service areas were used to calculate demographic data
(i.e., number of households) within those service areas