SUBSTITUTION REQUEST - 08-14-2026_Redacted.pdf

This is a submittal substitution request approval letter dated August 14, 2026, regarding the USDA Kearneysville Tank/Aquaria Building Roof and Lab Building Roof Repairs project in Kearneysville, West Virginia.

The letter approves two product substitutions with noted conditions. For the Tank/Aquaria Building Roof, the Tee-Lock TL2516 24GA panel by Dimensional Metals, Inc. is approved as a substitute for the originally specified Trap-Tee panel. Although the proposed panel has a 2.5-inch height compared to the original 2.75-inch specification, this dimensional variance is acceptable because the proposed structural standing seam roof panel features 24-gauge material with 16-inch seam spacing and meets all panel finish requirements, performance testing standards, warranty requirements, and watertightness specifications. For the Lab Building Roof, the Tee-Lock TL2518 24GA panel by Dimensional Metals, Inc. is approved as a substitute for the originally specified 138T Standing Seam Roof Panel by McElroy Metals. The proposed panel has a 2.5-inch height compared to the original 1-3/8-inch specification, which is deemed acceptable. The substituted panel is a 24-gauge standing seam roof panel with 18-inch seam spacing that meets all required panel finish, performance testing, warranty, and watertightness specifications.