Heavy Civil Construction

We specialize in highly technical and complex projects that integrate natural resource management with heavy civil construction for the benefit of human and ecological health. We excel at delivering projects that are subject to resource agency permits and include work within sensitive ecological resources and challenging environmental conditions. 

Stream Restoration & Reconstruction

 

Hanford implements the leading methods in stream and riparian restoration and reconstruction. From roadside tributaries to scenic National Park locales, we understand the sensitive ecosystems and light footprint necessary to rehabilitate natural processes.

  • Stream realignment and reconstruction, including decommissioning old channels, daylighting and bank stabilization

  • Fish habitat improvement through dam removal, fish passage structures, habitat complexity via wood or rock structures

  • Rock structures such as barbs, weirs, deflectors, bank toe protection, riprap, grade control structures, and riffle/pool construction.

  • Wood structures such as large wood debris (including with rootwads), bioengineered dams (beaver dam analogs), log weirs, and other structures to create complex habitat

  • Soil bioengineering such as vegetated soil lifts, brush mattresses, and willow wattles (fascines)

  • Bank stabilization through natural fiber mats, blankets and revetments

  • Precast concrete and steel bridges, installed in a manner to alleviate stream and floodplain constriction, and open fish passage

  • Design and install complex stream bypass, dewatering, and filtering systems in order to protect existing wildlife, habitat and to provide optimal construction conditions

 

Wetland Restoration & Mitigation

 

Hanford has worked with a range of stakeholders in the field of wetland restoration and reconstruction to develop methods to rehabilitate this sensitive and important habitat. Freshwater and saltwater wetlands, meadows, and floodplains provide valuable habitat for many aquatic species and are home to a remarkable diversity of native plant life. These sensitive habitats are often the most impacted from human activities.

  • Employ plug and pond method to fill incised main channels within a wetland to restore ponding and sinuous multi-channel flows

  • Detailed grading to achieve varied gradients for seasonal and perennial wetland zones

  • Vernal pool restoration and mitigation

  • Amphibian habitat construction such as breeding ponds

  • Wood structure installation such as beaver dam analog construction to aid in aggradation of incised channels

  • Design and install complex stream bypass, dewatering, and filtering systems in order to protect existing wildlife, habitat and to provide optimal construction conditions

 

Public Facilities Construction

 

Hanford has extensive experience working in park settings through many of the restoration projects we have constructed. Many native landscape restorations have park facility components in order to better connect the community to the restored landscape. 

CIVIL CONSTRUCTION

  • Pedestrian and vehicular bridges (timber, steel, aluminum)

  • Levees and water control structures

  • Slope stabilization and reconstruction

  • Water and sewer utility systems

  • Pond and small dam construction, outlet structures, spillways

  • Stormwater facilities, drainage systems, water diversion structures


PARKS & TRAILS

  • Multi-use and ADA compliant trails

  • Retaining structures (natural rock wall, Sutter walls, tie-backs)

  • Pathways, benches, fencing, general landscaping

  • Trail stabilization, including use of special geosynthetics and geo-composites

  • Low impact water crossings


PUBLIC FACILITIES CONSTRUCTION

  • Park construction & renovation

  • Ballfield construction & renovation

  • Schoolyard field renovation

  • "I managed and oversaw all project related activities for the Butano Creek Channel Stabilization and Habitat Enhancement at Cloverdale Road Bridge Project. Construction was completed for this project by Hanford ARC in summer/fall 2021. Hanford ARC completed the job on time and on budget, they had excellent communication and were always willing to work with us to quickly and efficiently resolve any issues that arose. Hanford ARC worked collaboratively with the RCD and three separate landowners meeting all of their individual needs and requests to ensure a quality product that all parties involved were pleased with. I would highly recommend Hanford ARC for future work, their staff are professional and the final product was excellent."

    Jarrad Fisher, Senior Project Manager, the San Mateo Resource Conservation District

Featured Projects

Excavator moving boulders at Lagunita creek


Dam Removal & Creek Restoration

The Lagunita Diversion Dam Removal and Creek Restoration

STANFORD - The Lagunita Diversion Dam Removal and Creek Restoration Project is located in the central portion of the Coast Ranges a geomorphic province of California. Northwest and southeast trending valleys and ridges characterize the regional morphology of the province.


TIDAL CHANNELS & FLOODPLAIN, SENSITIVE SPECIES HABITAT, FLOOD PROTECTIONS

LOOKOUT SLOUGH

SOLANO COUNTY, CA - The Lookout Slough Project will provide the California Department of Water Resources (DWR) with high-quality Delta smelt habitat to help the state meet the requirements of an Endangered Species Act biological opinion. EIP is providing DWR with a large-scale, full-delivery restoration solution through our innovative Pay for Performance model.


WETLAND RESTORATION & MITIGATION

DRY CREEK

SONOMA COUNTY - Excavation of backwater alcoves and side channels into the floodplain areas, installation of habitat and stabilization structures, driving logs into the ground, stabilization of banks, planting and replanting riparian vegetation and trees, removal of non-native vegetation, construction of in-channel features and replacement of storm drain pipe.


STORMWATER & EROSION CONTROL

SAN GERONIMO

MARIN COUNTY - The project consisted of removal of defunct fish ladder and pool structures and installation of new channel grades and rock structures, floodplain creation, new pedestrian bridge and native plant installation.