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Board approves amendment to DD11 Sub 1 engineering report after drainage session

Humboldt County Board of Supervisors · June 30, 2025

Summary

Following a brief drainage session, supervisors approved an amendment to the DD11 Sub 1 engineer's report that describes handling the old main and records a roughly $11,000 estimated cost increase; the amendment was adopted by voice vote.

The Humboldt County Board of Supervisors recessed into a drainage session to address multiple drainage items and approved an amendment to the DD11 Sub 1 engineer's report.

The amendment explains two approaches for handling the old main in the project area: in the northern section the old main will be cut and removed as the new pattern tile is installed, while further south the old main may be left and connected to the new main at intervals. Staff said upsizing the new main from 18 to 24 inches in some locations was proposed due to higher flows. The engineer also noted an estimated $11,000 increase in the project cost compared with the original estimate. Supervisors moved to accept and approve the amendment to DD11 Sub 1 and the motion passed by voice vote.

Supervisors also discussed plugged private tile reported by a landowner, ongoing ditch cleanouts and a dam overtopping after heavy rains; staff said they would inspect sites and coordinate repairs.

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