Caltrans Stormwater Best Management Practices (BMP) Evaluations

ProjectLine prepared two reconnaissance studies for Caltrans stormwater management program, each of which included a literature review and study report. The first study evaluated alternatives for stormwater disinfection as a potential new Caltrans BMP. Disinfection alternatives evaluated included anti-microbial filters, ozone, ultraviolet irradiation, and chlorination/ dechlorination, with anti-microbial filters recommended for further consideration as a Caltrans BMP. ProjectLine also prepared an evaluation of alternatives for more efficiently cleaning of existing approved Gross Removal Device (GSRD) BMPs. ProjectLine recommended pilot testing of pipeline pigging and waterjetting, and shaftless screw installations for cleaning of Caltrans’ Linear-Radial GSRD, which is a cylindrical well-screen used for trash removal. ProjectLine prepared conceptual design drawings for recommended GSRD and stormwater disinfection technologies.