Our staff has performed numerous monitoring projects ranging in scale from multisite regional areas to single station special purpose sites. In any scale, siting both from a goal and feasibility perspective is critical. Our key personnel have over 30 years of applied experience in such efforts. Our resume includes major projects mandated by federal, state, and local districts to determine dispersion patterns around existing and proposed emission sources. Projects have ranged from multiple power plant, area source, line source and dispersion studies in California, Wyoming, Alaska, Washington, Colorado, Nevada, Indiana, Illinois, Tennessee, Ohio, Missouri, South Carolina, Virginia and Washington DC. In these studies ground-based measurements with up to 125 samplers, often coupled with measurements aloft, allowed for mapping of plume transport and dispersion. In addition, many smaller scale source/receptor reconciliation programs to quantify emissions from mining and material handling operations, vehicle emissions in tunnels, and urban source emission patterns have been conducted. Clients for whom the developed methodologies and technologies have been deployed include Southern California Edison, Ohio Edison, Savannah River Laboratory, Consolidated Edison, Pacific Gas and Electric, Exxon, Texaco, the California Air Resources Board, various State Air Pollution Control Districts, U.S. Homeland Security and many others.