Bryte Landfill Remediation
Odin is working on behalf of the Sacramento Area Flood Control Agency (SAFCA) on the former Bryte Landfill Remediation project in West Sacramento. The Site was used as a municipal solid waste and construction debris burn dump from approximately 1940 through 1974, and possibly as late as 1981. This project is the precursor to the future Lower Elkhorn Basin Levee Setback project. Odin mobilized in mid-June 2019 and is scheduled to be complete October 2020.
This unique project includes the construction of a regulatory authorized Corrective Action Management Unit (CAMU) permitted and designed as a repository for the landfill waste. Construction of the CAMU has required a phased construction approach as there are many elements (i.e. layers) inherent in this type of structure. Selective excavation within the landfill yielded 55,000 CY of clean cover material of which 35,000 CY was beneficially used to construct the berm and base of the seven-acre CAMU. The base was then covered with approximately 300,000 SF of geo-composite clay liner (GCL). A one foot layer of select fill material was then placed directly on the GCL to complete the base of the CAMU. The CAMU then received approximately 151,000 CY of waste from the former landfill. Prior to placement, much of the waste material was mechanically screened to remove oversized debris. Also, based on investigation sample data, a specific area encompassing approximately 22,000 CY of waste was classified as RCRA hazardous waste due to metals concentrations. This waste was strategically removed out of excavation sequence so that the material could be placed low within the CAMU and then treated in-place for metals prior to the remainder of waste placement.
Odin has worked collaboratively with all stakeholders including SAFCA, the design engineer, representatives of both Sacramento and Yolo Counties as well as the Department of Toxic Substance Control (DTSC) who is the lead regulatory agency. This phase of work was completed in 5 months during the 2019 season with no incidents or lost time accidents. This Spring, Odin remobilized in 2020 to site to complete additional impacted materials removal. Some of which will be hauled off site and other materials will be placed within CAMU after which the final top foundation layer will be installed, overlain by another geo-composite clay liner (GCL), drainage systems, and finally a vegetative soil layer completing the CAMU structure. Upon CAMU completion the elevated structure will used as a corporate maintenance yard for Yolo County in the future.
- Sacramento Area Flood
- West Sacramento, CA
- Start Date
- June 2019
- End Date
- estimated September 2019
- Landfill and CAMU Construction, Contaminated Soil Excavation, Landfill Closure, and Capping, Onsite Repository/Containment Construction, Soil, and Groundwater Remediation Systems
- Performed As
- Excavated 55,100 CY of clean cover
- 155,400 CY of landfill waste
- 22,000 CY of waste treated for RCRA metals
- CAMU construction to regulatory standards
- On site hazardous waste soil treatment
- Work to date included no safety incidents or lost time accidents