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Affordable‑housing group summarizes geothermal feasibility testing near senior mobile‑home parks
Summary
Calistoga Affordable Housing reported results of a feasibility study by Geothermal Reserves Group identifying candidate wells and seismic considerations near senior mobile‑home parks; the group requested continued city support as it pursues testing options.
At the June 11 meeting, Larry Croman of Calistoga Affordable Housing (CAH) presented a summary of a CDBG‑funded geothermal feasibility study conducted by Geothermal Reserves Group (GRG). The study’s objective, he said, was to evaluate at least four geothermal wells within Calistoga’s known hot zone to assess temperature, flow rate, depth and water chemistry for potential resident power use.
Croman identified candidate wells and sites within a roughly half‑mile radius of Indian Springs — including the Pachata well, the Bottling Plant well (former Nestlé site), and springs adjacent to mobile‑home parks. He also referenced state and local drilling records showing significant seismic faults in the area, naming the Grand Street Fault as the likely source of hotter geothermal water and noting that some wells are aligned with that fault.
CAH said testing plans have been delayed for several years by ownership changes and access constraints; staff recommended timing the next steps to GRG staff availability and property owner cooperation. Croman asked for continued city support on the grant and exploration work.
No formal council action was taken on the geothermal item at the meeting; it was presented as public comment and a summary of study findings.
What happens next: CAH expects to coordinate testing schedules with GRG and property owners; any testing or infrastructure work would require landowner permission and further city review.
