Specifications include, but are not limited to: The purpose of this Request For Proposals (RFP) is to develop contracts with entities who employ certified Quality Control Inspectors to perform onsite inspections and offsite file reviews of weatherized units to determine compliance with proper file documentation, work, and quality standards as well as if the agency who completed the weatherization followed best practices. All inspections must be completed by a certified Quality Control Inspector. Inspections and file reviews will be completed in accordance with the U.S. Department of Energy (DOE), National Renewable Energy Laboratory (NREL), Job Task Analysis (JTA) and Weatherization Assistance Program (WAP). Successful applicants will also conduct sessions at the annual Weatherization Conference and participate in meetings to share common issues and best practices. This RFP may result in multiple award recommendations.