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Partnering with Shimmick Construction, among other contractors, the Folsom Dam Raise Project is a major flood risk management initiative led by the U.S. Army Corps of Engineers Sacramento District. This effort provides system-wide flood damage reduction benefits when combined with the common features efforts within the Sacramento Valley.
The key project features Main Dam Spillway work on all eight Tainter gates which includes structural retrofits to the trunnion anchorage system, structural reinforcing to strengthen gates, “top seal” structural headwalls installed above each gate, concrete pier extensions, new elevated hoist platforms, and new cable hoist system with new electrical controls.
Also, key is the Left and Right Wing Dams work which includes the construction of a reinforced L-shaped concrete floodwall (3.5-feet height) above existing ground level, embankment work, relocation of utility and security features, and a removable stoplog system approximately 20 feet wide will be framed and installed through the concrete flood wall near the tie-in location between the Main Dam and the Left Dam.
Shimmick Construction reached out to HMH for our land survey and construction staking expertise. The oversight of precise staking—establishing horizontal and vertical control—guided earthwork and grading for raising the dikes and dams. This staking, used for ongoing quality control, culminated in as-built surveys documenting the final project configuration. Field crews expertly scheduled and collaborated closely with clients to ensure the accurate placement of the raised sections and new features, such as gate modifications, guaranteeing enhanced flood protection capabilities were achieved according to specifications.
Vantage CA2 is located on a nine-acre flagship campus with Class-A amenities, including workspace, conference/collaboration areas, and other office facilities. This project consisted of obtaining Land use (Project Clearance Committee) approvals and construction documents for site improvements for development of this brownfield site to construct three four-story buildings encompassing a total building square footage of 541,000 square feet. Site improvements for an electrical substation were designed with the first building phase. Construction documents for improvements within the fronting public street right of way, including new sidewalk, water, storm and sewer laterals, and a new 12-inch water main. Mapping to merge the existing three lots to one and provide the opportunity to convert to condominium purposes. Construction of Building CA21 is complete, with the CA22 and CA23 improvements currently under construction.
The first stations built for the California High-Speed Rail (HSR) project will be in the Central Valley at Merced, Fresno and Bakersfield. These stations are designed not just as transit points but as multi-modal hubs that connect HSR with other forms of transportation. The design work for these stations is in progress, with a potential construction start in 2028. The Central Valley stations JV, led by Foster + Partners and ARUP. The project is focused on sustainability, aiming for net-zero construction emissions and operation on 100% renewable energy.
As a small business partner in the Central Valley Stations Joint Venture, HMH is the civil engineer of record and land surveyor of record for the design of the Merced, Fresno, and Bakersfield Stations. HMH performed aerial surveys, supplemental topo surveys, and parcel mapping as the project surveyor. In addition to developing the civil engineering portion of the plans and specifications for the station, HMH also contributed to the value engineering effort and construction phasing strategy.