Los Angeles County MTA Purple Line Extension

Posted on November 7th, 2024 by Ji Lee

Our team served as Engineer of Record for LA Metro’s Westside Purple Line Extension, designing Century City/Constellation Station and reviewing plans for Wilshire/Rodeo Station. The project demanded advanced soil-structure interaction, 3D modeling, and excavation support to ensure stability beneath densely developed areas along Wilshire Boulevard, factoring in seismic resilience and loading impacts from nearby high-rise buildings in this urban infrastructure initiative.

Redondo Boardwalk Emergency Repair

Posted on November 7th, 2024 by Ji Lee

Our team partnered with the City of Des Moines to restore the storm-damaged Redondo Boardwalk along Poverty Bay. Services included project management, structural engineering, environmental permitting, and construction oversight. Key repairs involved replacing girders, decking, and support elements, with FHWA funding accelerating timelines. The new design improves resilience, featuring concrete decking with wood-grain texture and UV-resistant coatings for longevity.

Greatrock Reverse Osmosis Water Treatment Plant

Posted on July 12th, 2024 by Renee Narvaez

The Greatrock North Water and Sanitation District retained our team to address its aging and failing reverse osmosis water treatment plant. The existing plant designed and built by the original developer had a capacity of 100 gpm and could not keep up with the desired capacity or the district’s water quality targets. The district’s raw […]

Edgemont Ranch Metropolitan District Wastewater

Posted on July 12th, 2024 by Renee Narvaez

The Edgemont Ranch Metropolitan District was issued new and very strict TIN, TN and TP limits that rendered their lagoon system obsolete. Edgemont Ranch lies in the watershed of the Florida River, a tributary of the Animas River. Downstream of the treatment facility are agricultural irrigation reservoirs that experienced algae blooms. Because lagoon-based systems are […]

Del Norte Collection System Improvements

Posted on July 12th, 2024 by Renee Narvaez

The Town of Del Norte’s collection system had significant structural issues including collapsed clay pipes, cracks, and offset joints. This caused significant inflow and infiltration (groundwater/runoff) into the collection system, sometimes as much as doubling or tripling the normal influent wastewater flow to the wastewater treatment plant. This significantly affected the treatment facility’s ability to […]

Center Sanitation District

Posted on July 12th, 2024 by Renee Narvaez

Center Sanitation District was struggling for years with a non-compliant lagoon system. The existing facility had chronic BOD, TIN, and E. Coli violations of their groundwater discharge permit. The district was issued a Notice of Violation Cease and Desist Order for the length and severity of these violations. Our team was tasked with creating a […]

Secondary (fine) Ore Cusher-7C Dribble Chute and Platform

Posted on July 11th, 2024 by Renee Narvaez

The client was looking for a safer and more efficient way to transfer ore to the main course ore bin. The existing ore dribble chute was scanned in 3D and used to design a new dribble chute and platform. The new dribble chute design changed the location of discharge from a conveyor directly to course […]

Primary Crusher Belt Feeder – Motor Lifting Plan

Posted on July 11th, 2024 by Renee Narvaez

Crush/Convey department wanted to implement a new system to lift and convey belt feeder drive motors to a roof opening area. Project objective was to evaluate existing capacity of ceiling beams for trolley and hoist system designed to remove and install belt feeder motors to a roof opening area. Bowman provided a load rating and […]

Fine Ore Cusher – 7B Conveyor Counterweight Evaluation

Posted on July 11th, 2024 by Renee Narvaez

The existing counterweight on the 7B conveyor had a winch system with inadequate lug connections and was rigged at an improper angle, which created structural integrity issues. Bowman calculated the take-up weight on lateral beams to size counterweight box and evaluated counterweight lifting methods compared to the existing winch system. Bowman prepared an economic trade-off […]

Sierrita Mine Access Road Grading and Drainage Plan

Posted on July 3rd, 2024 by Renee Narvaez

Bowman provided engineering services for a construction drawing package for access road grading and drainage improvements. The haul roads were severely damage during storm events so collection, conveyance channels, sediment traps and culverts were designed to manage a 25-year, 24-hour storm event. The design also included a paving plan for specific haul road sections to […]