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Peer review backs reinstating a reduced 510 pressure zone for Highlands, flags sprinkler risks
Summary
A peer review of Highlands water-pressure alternatives found the consultant analysis sound and recommended a reduced reinstatement of the 510 pressure zone as the best long-term fix, while advising additional investigation into how lower-than-original pressures might affect about 70 residential fire-sprinkler systems.
A consultant peer review presented to the Kirkland City Council on April 7 supported the technical analysis behind alternatives to address pressure changes in the Upper Highlands and recommended moving forward — with one important caveat.
Consor engineers told the council that work performed by RH2 used industry-standard hydraulic modeling and that the set of alternatives considered were appropriate for planning and budget decisions. The strongest-performing long-term fix agreed by the peer reviewer…
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