The document discusses how to estimate the economic impact of commercial real estate development using the Three Rivers Model. The model measures total output, earnings, and employment generated. It requires inputs like building size, costs, and employment. RIMS II multipliers are applied to the initial construction and ongoing business operations to estimate the direct, indirect, and induced economic impacts. While simple, the Three Rivers Model provides a standardized way to quantify the gross economic benefits of commercial real estate projects using reliable government data.