City of Los Angeles – Stormwater Quality Sampler Installations
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 32” D) mounted on concrete pads. Roof and pole-mounted solar photovoltaic panels, with batteries, provided power for sample pumps, flow meters, and sampler controls. Installations included protected sample piping and flow meter installations inside adjacent stormwater drainage channels and pipes. Installations also included added fencing, channel access gates and stairs for access to sample points. The project required coordination with Cities for encroachment and SWPPP permits, and coordination with LA County Flood Control District for access to drainage channels.
Storm Water Improvements, Phases 1 and 2 – Industrial Client
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 stormwater pump vaults, a 375,000 gallon stormwater tank, a 238 gpm Aquip Treatment System, and related interconnecting piping, pumps, valves, flow meters, control systems and electrical work. The project required close coordination with the Owner to mitigate impacts to facility operation throughout construction. The project addressed water quality issues with stormwater runoff from the site to an adjacent creek.
California Department of Transportation – Drainage Improvements for SR73 Tollroad
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 anchorage of new pipes, since substandard backfilling led to failure of previous pipe. The project also included replacement of headwall end connections, slurry backfill, preparing and implementing traffic control plans, site grading, slope compaction, earth export, and installation of soil erosion control materials. ProjectLine was a subcontractor to AMEC for this project, and completed the project on-time and under budget.
California Department of Transportation – Stormwater Filter Media Replacement for SR73 Tollroad
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 shipped to site in supersacks, and placed media was washed, with testing of wash water prior to putting filter on-line. Excavated sand media was TCLP tested to determine appropriate waste disposal, and wash water was vacuumed from downstream manhole and trucked to permitted disposal facility. The filter is being used to evaluate AA media for treatment of tollroad runoff to adjacent San Diego Creek, which flows into Newport Beach’s Back Bay. ProjectLine was subcontractor to AMEC for the project.
California Department of Transportation – Erosion Control Pilot Test Facility
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 and barrels, and concrete slabs located within security fencing for collection and monitoring of runoff. Test materials applied include three proprietary liquid-applied erosion control products, soil-cement, and rock-slope protection. The project also included site grading, slope compaction, and installation of soil erosion control materials. ProjectLine was a subcontractor to URS for this project, and completed the project on-time and under budget.
EAR Engineering – On-Site Chlorine Generation Systems
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. Systems included salt storage, rectifiers, sodium hypochlorite storage tanks, dosage pumps, flow metering and chemical injection. Systems also included aqueous ammonia storage tanks, chillers and dosage pumps for future conversion to chloramination. Services were provided using innovative, fast-track design-build collaboration between ProjectLine and the owner, prime contractor and equipment suppliers.
Air Products and Chemicals Inc. – Fuel Cell and Hydrogen Energy/Fueling Station at Orange County Sanitation District
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 Products and Chemicals, Inc (Air Products), with Air Products providing equipment for this demonstration project. The project includes cutting edge technology for generating electricity, purifying and storing hydrogen gas, and fueling hydrogen-powered vehicles throughout Orange County and Southern California. This vehicle emissions reduction project was funded by the US Department of Energy, the California Air Resource Board, South Coast Air Quality Management District, Air Products, and the Orange County Sanitation District. ProjectLine provided civil, structural, mechanical and electrical designs for equipment installations and utility connections. Key safety considerations included compliance with NFPA 55 requirements related to storage and handling of hydrogen gas, and NEC requirements for classified areas. ProjectLine provided follow-on construction phase engineering services.
City of Ontario – Site Security Upgrade Project
ProjectLine provided construction management for upgrades to security systems at City reservoirs 1, 2, 3, 7, 8, 9 and 10. Upgrades included vandal-resistant, visually attractive electric sliding gates, fences, and Supervisory Control and Data Acquisition (SCADA) equipment enclosures. Security enclosures included intrusion alarms to the City’s SCADA system. ProjectLine evaluated alternative security enclosures, fencing and gate materials, and assisted the City in selecting materials suited to City park locations of three sites. Upgrades also included motorizing three existing manual sliding gates at the Public Works Agency site. Sliding gates included security and safety loops, and card readers integrated with existing City security systems.
City of Ontario – Reservoir Repair Contract Management and Construction-Phase Engineering Services
ProjectLine provided construction management for repairs of two City of Ontario water supply reservoirs, 0.375 and 2.0 million gallon Reservoirs 5 and 6. Repairs implemented include sealing approximately 3,000 linear feet of cracks in the concrete walls and slabs of the reservoirs, recoating corroded interior roof supports, and repairs to concrete voids and spalls. ProjectLine evaluated alternative repair methods, recommending an advanced, very-low-viscosity gravity penetrating epoxy sealant for more cost-effective repair of selected cracks. Owner selection of recommended repair methods allowed completion of added work within original project budget and schedule. Services also included Quality Assurance/Quality Control monitoring, and preparation of technical submittals for repair alternatives.
California Department of Transportation – Vegetated Erosion Control Pilot Test Facilities
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 highway embankments, site grading, pavement modifications, equipment pads and electrical conduits for monitoring equipment, flumes to monitor runoff flow, and rip-rap for downstream drainage channels. A total of 11 flumes and related monitoring stations were included for the 4 site locations. ProjectLine was a subcontractor to URS for this project, and completed the project on-time and under budget.
Facility Maintenance Construction
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 related service platform.
· Replacement of 13 Air and Vacuum Release valves on IEUA’s San Antonio pipeline and Jurupa force main, repair of damages pipeline valve risers in 2 locations, and placement of guard posts for valve protection from vehicles.
· Repair of broken and clogged constructed wetlands drainage piping and installation of drainage manhole at IEUA’s Headquarters location.
· Replacement of damaged traffic-rated galvanized steel hatch for recycled water meter vault located in Ontario Mills Parkway. The work included structural evaluation of hatch replacement alternatives, demolition, concrete work, and traffic controls.
· Emergency repair of buried gas line at IEUA’s RP-5 facility. The gas line was located over 20 ft deep, and repairs required excavation, shoring, and fusion-welded polyethylene pipe repairs.
· Replacement of 18 rubber expansion joints (EJs) and one 16-inch Victaulic coupling for aeration systems at IEUA’s Carbon Canyon treatment plant. The 10-inch and 16-inch EJs were at end of useful life, and the Victaulic coupling was found to be leaking. The work required close coordination with IEUA Operations staff for short-duration sequenced shutdowns for each of 6 aeration basins to maintain continuous treatment plant operation.
· Breaking and disposal of concrete debris at IEUA’s RP-5 site.
· Replacement of broken guard post at OCSD fueling facility, and related concrete paving.
· Modification of security fencing for Hydrogen Energy Station at OCSD’s Plant 1 site to provide equipment access.
· Construction of concrete stairways to electrical buildings at IEUA’s RP-5 site.
· Replacement of corroded sludge piping with new permanent, glass-lined sludge piping at IEUA’s RP-1 site.
· Replacement of paving for portions of IEUA’s RP-1 site.
· Replacement of electrical service pedestal for IEUA’s Brooks Basin, and replacement of wiring, grating and fencing at the related service platform.
· Replacement of 13 Air and Vacuum Release valves on IEUA’s San Antonio pipeline and Jurupa force main, repair of damages pipeline valve risers in 2 locations, and placement of guard posts for valve protection from vehicles.
· Repair of broken and clogged constructed wetlands drainage piping and installation of drainage manhole at IEUA’s Headquarters location.
· Replacement of damaged traffic-rated galvanized steel hatch for recycled water meter vault located in Ontario Mills Parkway. The work included structural evaluation of hatch replacement alternatives, demolition, concrete work, and traffic controls.
· Emergency repair of buried gas line at IEUA’s RP-5 facility. The gas line was located over 20 ft deep, and repairs required excavation, shoring, and fusion-welded polyethylene pipe repairs.
· Replacement of 18 rubber expansion joints (EJs) and one 16-inch Victaulic coupling for aeration systems at IEUA’s Carbon Canyon treatment plant. The 10-inch and 16-inch EJs were at end of useful life, and the Victaulic coupling was found to be leaking. The work required close coordination with IEUA Operations staff for short-duration sequenced shutdowns for each of 6 aeration basins to maintain continuous treatment plant operation.
· Breaking and disposal of concrete debris at IEUA’s RP-5 site.
· Replacement of broken guard post at OCSD fueling facility, and related concrete paving.
· Modification of security fencing for Hydrogen Energy Station at OCSD’s Plant 1 site to provide equipment access.
· Construction of concrete stairways to electrical buildings at IEUA’s RP-5 site.
· Replacement of corroded sludge piping with new permanent, glass-lined sludge piping at IEUA’s RP-1 site.
· Replacement of paving for portions of IEUA’s RP-1 site.