Modificaiton to Purchase Order EP11H000527

The Environmental Protection Agency (EPA) plans to modify Purchase Order EP11H000527 with the Texas Transportation Institute as a continuation of prior work involving environmental chamber testing of auxiliary power units (APUs) equipped with diesel particulate filters on Class 8 sleeper cab trucks with engines from 2007 or newer. This testing aims to gather emissions and environmental impact data to support the SmartWay Transport Partnership's Idle Reduction Technology (IRT) Verification Program and to aid the EPA’s heavy-duty truck greenhouse gas regulations development. The modification will focus on further validation and completion of the IRT Verification Protocol and enable the Texas Transportation Institute to identify and acquire two to four additional APUs for the required testing under the current order and future EPA-related testing initiatives. This communication is not a request for a quote or solicitation; it serves as a formal notification of the intended contract modification. All inquiries should be directed in writing to the designated Contracting Officer, Michael Gilham, via email. The contract, managed by the EPA’s Headquarters Acquisition Division, aligns with NAICS code 611310 and is executed under the authority based in Washington, DC. The modification ensures that the ongoing efforts to evaluate and verify idle reduction technologies remain comprehensive and scientifically supported to further environmental policy goals.