Three-Point Radon Mitigation System for Farmhouse with Levels Near 40

This project requires a three-point radon mitigation system due to extremely high radon levels nearing 40 pCi/L. The basement is divided into two concrete chambers separated by a brick wall, plus a large crawl space of roughly 900 sq ft, making multi-point extraction necessary for effective radon reduction. Fan exit is planned at the back corner of the home. Routing can be flexible, but keeping runs on one side of the house is recommended for efficiency. Existing wall gaps, rim joist openings, and pipe penetrations can be used to assist routing. Crawl space access is tight and requires full navigation around the ductwork. Homeowner recently purchased the family farmhouse and wants long-term radon mitigation and indoor air quality protection.