Another potential basis for confusion is the Stimulus Act’s “unreasonable cost waiver,” which permits a federal agency to make a determination to allow a project to use foreign manufactured goods or foreign construction materials if the use of products manufactured in the United States will increase the cost of the “ overall project ” by more than 25% . This provision is narrow and must be carefully applied .   For example, the unreasonable cost waiver does not apply if the cumulative cost of the U . S . manufactured pipe for a project will be 25% greater than the cost of foreign manufactured pipe; rather the use of U . S . manufactured pipe must increase the cost of the entire project by more that 25% .    Again, we urge you to exercise great caution in assessing the claims of importers or foreign manufacturers about whether their products are eligible for use in projects funded by the Stimulus Act .   In the meantime, our associates stand ready to supply you with high quality products that are manufactured in the United States and that fully comply with the Buy American provision in the Stimulus Act .   We have the expertise, the capacity, the breadth of offering and the desire to meet your needs in every respect .   Please contact us if we can assist you in any way . Thank you for your business . CHARLOTTE PIPE AND FOUNDRY COMPANY   PO Box 35430 Charlotte, NC 28235 USA 704/372 - 5030 800/438 - 6091 FAX 800/553 - 1605