This report documents the activities performed during and the results obtained from the U.S. Environmental Protection Agency (EPA) arsenic removal technology demonstration project at the City of Sandusky, MI facility. The objectives of the project were to evaluate: 1) the effectiveness of Siemens Water Technologies Enhanced AERALATER Type II Arsenic Removal Technology in removing arsenic to meet the maximum contaminant level (MCL) of 10 ig/L, 2) the reliability of the treatment system for use at small water facilities, 3) the required system operation and maintenance (O&M) and operator skill levels, and 4) the capital and O&M cost of the technology. The project also characterized water in the distribution system and residuals generated by the treatment process. The types of data collected included system operation, water quality, process residuals, and capital and O&M cost. After engineering plan review and approval by the state, the AERALATER was installed and became operational on June 14, 2006. The fully-automated, packaged system consisted of a 12-feet diameter aluminum detention tank atop a 12-feet diameter, three-cell gravity sand filter plus ancillary equipment including an air distribution grid, an air compressor pack, a blower, two chemical feed systems, a high service pump, sample taps, and associated instrumentation.