The South Minneapolis Residential Soil Contamination Site (SMRSCS), located in Minneapolis, Minnesota, has been investigated for residential arsenic contamination transported by aerial dispersion from the CMC Heartland Lite Yard Site (CMC Heartland Site). Between 1938 and 1963, the CMC Heartland Site blended and distributed arsenical pesticides and herbicides, during which time air dispersion is suspected to have transported arsenic into residential properties in the SMRSCS. This Remedial Investigation (RI) report summarizes results from the testing that has occurred at the SMRSCS from 2001 through 2006 and characterizes the risk posed from arsenic concentrations. The property-specific results are not included in this RI report and are available only to the property owners; however, the distribution and range of arsenic concentrations are discussed for the site characterization and in characterization of the risk.