Engineer of Record for Pomona Landfill Redevelopment

EKI serves as the environmental engineer-of-record (EOR) on behalf of a client planning to redevelop the former Phillips Ranch Disposal Site, a 25-acre site located in Pomona, California, into an apartment building and mixed-use complex.

The redevelopment will require extensive grading of the site, including excavation of waste materials, and will also involve new roads and underground utilities that will traverse waste materials, requiring special site-specific design considerations.

This former landfill was operated between the 1920s and 1950s. Since site closure, EKI has provided the client with post-closure maintenance, monitoring, and reporting services. EKI performed the following additional services:

• Oversaw the development of project environmental coordination design drawings to address these and other aspects pursuant to CCR Title 27 requirements.
• Prepared certain updated environmental compliance work plans, such as a Soil and Waste Management Plan, Perimeter Probe Abandonment, Replacement, and Adjustment Workplan, and SCAQMD Rule 1150 EMP. These plans are being updated to address the new development plan remedial activities, including mass grading, waste reconsolidation, and other construction elements. The client’s redevelopment plan includes construction of a six-story, 205,000 sf apartment building with subterranean parking, and a 161,000-square-foot, six-story mixed-use building.
• During the design process, EKI acted on the client’s behalf by facilitating ongoing meetings and coordination with the Client’s Design and Development team.

Outcome

A landfill cover system, consisting of soil and an asphalt cap, was constructed, and Cal Recycle issued a Certificate of Completion in 2018. The existing asphalt cap will be preserved to be used as a parking lot for the new development.