Public Works

Sewer Brine Line Phase 1-B

Part of a project to increase group water supplies by over 40,000 acre-feet a year for the Calleguas Municipal Water District. Over 8,500 lf of 48" pipeline was installed in this segment to carry excess brine from the treatment process to the ocean. Due to the corrosive properties of the brine, never before used materials were incorporated into this project, including 48" C900 PVC fittings and required close coordination with the Owner and the Engineer. Other challenges included a 54" mirco-tunnel under an existing channel and extensive traffic control on a busy major road.

View Full Project

CLWA 118B Groundwater Restoration Project

Installation of over 20,000 lf of welded steel pipe, varying for 10" to 42" in diameter in existing city streets, city bike paths and on 3 existing bridges crossing waterways. Construction easements on bike paths were very limited and had very tight and strict schedule milestone that had to be met to accommodate City events. Heavy traveled and high traffic streets required that 50% of the street work to be installed at night. Existing utilities required installation of the 42" steel pipe at depths of 20 to 25 feet deep in the busy intersections. Environmental and biological monitoring was required...

View Full Project

Santa Monica Low Flow Diversion Upgrades Package 3

A very challenging job located in high risk and highly visible location. Located on the scenic Pacific Coast Highway at Will Rogers beach park, this project was one of the final stages of the City of Los Angeles' program to eliminate the discharge of polluted storm drain runoff into the Santa Monica Bay. The work included the installation of 42" Hobas pipe in PCH, mircotunneling underneath an existing flood control channel, siphon, deep shafts, sheet piling, secant piles, beam and plate shoring and extensive dewatering for the installation of pipe and structures well below the ground water level. Significant safety...

View Full Project

Arundell Barranca Improvments

Over 3,550 lf of an exiting drainage channel was removed and replaced with a new 25 lf wide by 14 lf high concrete rectangular channel. Over 7,000 cubic yards of concrete, 850,000 lbs of steel and 100,000 cubic yards of excavation and removal were required to complete this project. Building the new channel required maintaining the flow in the existing channel while the new one was being constructed. Unexpected heavy rains in May caused extensive damage and required us to accelerate to complete the project before the winter rains hit.

View Full Project

24″ REW Pipeline from Mulholland Hwy to Tapia WRF

Installation of approximately 9,000 lf of 24" welded steel pipe line in a narrow, heavily traveled main thoroughfare between Calabasas and the Pacific Coast Highway. Heavy traffic required restricted working hours and careful planning. The discovery of Native American artifacts required a switch from open cut construction to bore and jack for a portion of the job. One of the most challenging aspects of the job was the presence of an existing utility line running parallel to the new line, requiring careful and innovative shoring.

View Full Project