ProjectLine has performed several maintenance construction tasks for Inland Empire Utilities Agency (IEUA), and Orange County Sanitation District (OCSD). Construction tasks included: Replacement of electrical service pedestal for IEUA’s Brooks Basin, and replacement of wiring, grating and fencing at the…

ProjectLine constructed Caltrans vegetated erosion control pilot test facilities at 4 locations in Southern California (Bolsa at 405 freeway, 91 freeway in Yorba Linda, and 2 locations in San Diego). Construction work included: drainage piping to collect runoff from vegetated…

ProjectLine provided preliminary, final design, and construction services, for installation of a fuel cell, hydrogen purification system, and hydrogen fueling station at Orange County Sanitation District’s (OCSD) Plant 1 in Fountain Valley, CA. ProjectLine provided services under contract with Air…

As subcontractor to a design-build team, ProjectLine provided mechanical and electrical engineering and construction-phase services for two on-site chlorine generation systems at Edwards Air Force Base. Systems were constructed to replace use of chlorine gas for chlorination of potable water.…

ProjectLine built Caltrans erosion control pilot facility in El Centro, California. Test facility includes 24 test plots with metal frames constructed on 2:1 embankment slope at an Interstate 8 entrance ramp. Each of the test plots also includes flumes, piping…

ProjectLine assisted with media replacement planning for existing 1500 SF sand filter serving stormwater Basin 1194R of SR-73, located in Irvine. Replacement media included 6-inches of activated alumina (AA), 12-inches of silica sand, and geotextile fabric. Preconditioned AA media was…

ProjectLine constructed drainage improvements at existing stormwater detention Basins 1032R and 457L located in Newport Beach and Laguna Niguel. The project included demolition and replacement of failed 48-inch and 42-inch HDPE drainage piping. Key issues included ensuring proper backfilling and…

ProjectLine constructed Water Quality and BMP Improvements for an industrial client in the San Diego area, including drainage piping and 12,000 sf of concrete flatwork placed to precision grades using laser screed prior to finishing. Phase 2 construction includes five…

ProjectLine assisted with installation of stormwater samplers at 25 sites throughout the City as a subcontractor to Tetra Tech. Both permanent and temporary Hach samplers were installed in large NEMA 3R stainless steel enclosures (72” H x 48” W x…