The Fallbrook Public Utility District has amended its design contract for the Santa Margarita River Conjunctive Use Project so that the groundwater treatment plant can also remove per and polyfluoroalkyl substances (PFAS) contaminants from the treated water. A 5-0 FPUD board vote Jan. 27 approved an amendment to the design contract with Infrastructure Engineering Corporation which will provide IEC with an additional $771,143 and which will provide FPUD with treatment process selection, design services, and construction administration for the additional facilities.