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One bid for detention-center heat-pump work; commissioners, staff raise questions about geothermal wells and flow
Summary
County staff opened a single bid of $478,000 for replacement of failed water-to-water heat pumps at the county detention center and discussed whether the site''s geothermal injection wells and flow rates can support the proposed equipment. Commissioners asked staff to obtain technical clarifications before awarding a contract.
County staff opened bids on Jan. 15 for a detention-center HVAC project to replace failed water-to-water heat pumps and to add a heat exchanger and associated pumps, piping and controls. The lone bid came from Apex Mechanical for $478,000.
The bid opening prompted an extended technical discussion among commissioners, county facilities staff and the consulting engineer about groundwater flow, sediment in the raw-water supply and how the proposed equipment would perform. Commissioners and staff repeatedly emphasized that the detention system had failed in the past when flow was increased to the manufacturer''s specification because water returning to the…
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