The City of Glendale, as Lead Agency for the City of Glendale Biogas Renewable Generation Project (Project), prepared and certified the Final Environmental Impact Report (EIR) on November 30, 2021, pursuant to the California Environmental Quality Act (CEQA) as part of their December 1, 2021 approval of the Project. The Final EIR analyzed the construction and operation of a landfill gas to energy (LFGTE) facility capable of producing approximately 12 megawatts (MW) of electricity generation facility that would primarily utilize landfill gas (LFG) or a blend of LFG and natural gas as fuel to generate renewable electricity on-site. The Project includes the LFGTE facility with an existing piping system that would be relocated, natural gas pipeline, a water pipeline, and two water storage tanks, all of which will be located on an approximately 2.2-acre site within the existing 535-acre Scholl Canyon Landfill (SCLF) site.
The Project will require South Coast AQMD air permits for: 1) a landfill gas treatment system; 2) a regeneration (regen) flare; 3) four reciprocating internal combustion engines (RICE) and associated air pollution control systems; and 4) an aqueous ammonia storage tank. Specifically, the Project involves processing LFG received from the SCLF through a new LFG treatment system which is designed to remove sulfur compounds and siloxanes before the LFG is combusted in four new identical RICEs. Any excess LFG will be retained by the SCLF and combusted in the existing flares operated by the SCLF. The four new RICEs, each rated at 4,183 brake horsepower (bhp), with a maximum fuel consumption of 26.34 million British thermal units per hour (MMBtu/hr) based on high heating value (HHV), and with an estimated output of 3 MW, are capable of combusting LFG or a blend of LFG and natural gas. As such, the RICEs will be subject to a permit condition that will allow natural gas to be utilized as supplemental fuel with a maximum blend ratio of 90 percent LFG and 10 percent natural gas. Any required natural gas will be provided via the new natural gas pipeline connecting the LFGTE Plant to the existing Southern California Gas Company (SoCalGas) pipeline system located at the end of School Canyon Drive. The exhaust of each RICE will be routed to a new air pollution control system, which includes an Oxidation Catalyst and a Selective Catalytic Reduction (SCR) system, before the exhaust is vented to the atmosphere through a separate stack. Aqueous ammonia reagent for the SCRs will be stored in a new 12,000-gallon storage tank. During the regeneration of the adsorption media in the LFG treatment system, the gases desorbed from the media (regeneration or regen gas) are routed to a new regen flare which is rated at a maximum of 5.0 MMBtu/hr (HHV) and is fired with LFG.