Letter from Greg Wischer to Doug Burgum concerning expansion joints at the Reflecting Pool. The letter discusses updates and testing of new expansion joints at the Lincoln Memorial Reflecting Pool, addressing past failures and the installation of industrial-grade, leak-proof materials. It mentions consultations with the Army Corps of Engineers and criticizes past administration decisions.

Text detailing the effectiveness of a new expansion joint system, tested under cooler conditions, which expands over an inch yet remains intact, providing a perfect seal to prevent leakage. The system includes urethane-impregnated foam, urethane caulk, and a flexible polyurea layer, handling movement from seasonal changes without issues. Highlights contrast with previously costly systems.