The Pipeline and Hazardous Materials Safety Administration PHMSA is proposing to waive the Build America Buy America BABA Act's domestic preference requirements for certain products that Philadelphia Gas Works PGW needs for its Natural Gas Distribution Infrastructure Safety and Modernization NGDISM grant project. The proposed waiver would exempt the following products used in PGW's project from BABA requirements on the basis of nonavailability: electro-fusion tapping tees anodeless risers transition fittings lockwing valves magnesium anodes service adapters curb valves caps couplings and stiffeners. In accordance with section 70914c of BABA PHMSA is seeking public comments on the proposed waiver.