Landfill Solar Feasibility Study

Geosyntec was contacted by a utility company to perform a document review, compile a document library, and prepare an engineering feasibility study for a proposed photovoltaic solar system to be situated above a closed Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) landfill. The former CERCLA site was selected as a candidate for solar panel installation due to the proposed designated reuse as a photovoltaic solar power generation site agreed to by the Department of Toxic Substances Control (DTSC).

Geosyntec performed two primary phases of work: a document review and an engineering feasibility study.

Geosyntec compiled, organized, and reviewed documents obtained from the utility, the site owner, the DTSC, and the Regional Water Quality Control Board (RWQCB). The results of the file review were presented in a letter report and an electronic document library.

The engineering feasibility study identified the potential engineering concerns associated with development of solar panel over the specific landfill taking into account its location, its waste types, landfill gas systems, and cover type. The feasibility study developed and evaluated measures which, if implemented, would mitigate potential adverse impacts of the solar power development on the site remedy and render the project feasible. The specific focus of this study was to evaluate potential adverse impacts and identify technical issues and mitigation measures to be considered during design, construction, and operation of the development.

Geosyntec performed feasibility-level engineering calculations for quantifiable technical issues with a higher likelihood of occurrence, and identified and ranked potential mitigation measures for the identified technical issues according to feasibility, cost, and schedule impacts. This study provided a basis for design of the solar power system and provided a framework for understanding potential environmental liabilities and the regulatory status of the project.

We completed a comprehensive review of a significant volume of regulatory documents, distilling down important information into a manageable, concise, technical reference document to outline considerations for solar development.

Client feedback indicated impressive organization, attention to detail, and a high level of technical excellence.