Landau Associates developed three well fields to supply domestic and industrial water for Seattle City Light, in Pend Oreille County.  The water supplies were developed for the Boundary Dam Hydroelectric Project service area, and for campground and dam vista overlook development.  Landau Associates provided drilling and construction oversight for the installation of five wells ranging from 250 to 800 ft in depth.  The wells were drilled in limestone and dolomitic rock using air rotary drilling methods.  Aquifer pumping tests including step-discharge, constant-discharge, and recovery tests were conducted to evaluate aquifer yield and properties.