EnvironmentGlobal NewsNewsNorth America Construction starts on Stantec-designed project to boost water quality of Los Angeles River and Arroyo Seco by Abby Davey September 27, 2021 September 27, 2021 As part of a comprehensive effort to improve the water quality in the Los Angeles River and Arroyo Seco, the City of Los Angeles Department of Public Works will soon … 1 FacebookTwitterPinterestEmail