Water Tank Update

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Rimrock Cove Owners,

The RRC Board is happy to report some major progress on our new water tank project.

On March 27 RRC received final approval from the Department of Health (DOH), Office of Drinking Water, for the size, usage, and location of the new water tank. The new tank will be 26’ in diameter, 30’ tall, and hold 115,000 gallons. The DOH based this on hundreds of our documented usage numbers and current guidelines for a water system of our size.

With DOH approval, the following steps need to be completed:

  • Construction drawings of water tank and site preparation (Completed pending final revision after geotechnical soil analysis)

  • Easement verified for current service road to access water tank (Thank you Marilyn and Nanc!)

  • Geotech Soil Analysis (Completed)

    • 3/27/24 – Two engineers made a site visit to take soil samples from an 8’ deep pit dug 170’ up the hill from the current water tank’s location. The soil will be analyzed to determine the requirements for grading and compaction.

  • Tank Structural Engineering – (approx. 2 weeks after geotechnical soil analysis)

  • Permitting (6-9 months)

    • Discretionary use permit

    • SEPA Analysis (State Environmental Policy Act)

    • WDFW Priority Habitat Analysis (Fish and Wildlife)

    • Cultural Resource Study (Native American Concerns)

    • Geological Site Assessment (Unlikely to be required but possible)

  • Site Prep: 1-2 months

  • Tank Construction: 6-8 weeks, (construction window is March-December)

  • Pump/Tank Telemetry: 1 week

  • Final Tie-In: 1 week

  • Construction Completion Report to the Department of Health

  • Old tank decommissioned: 1 week

This is a very large and complicated project. A lot of ongoing efforts have been expended and there is a lot more that needs to be done. The current plan is to have the new tank installed fall 2024 but it is unknown how long the required permitting will take to complete. The new water tank will ensure the future viability of our community, increase water pressure to all owners meeting the legal minimums, and improve the value and livability of Rimrock Cove for decades to come.

Best Regards,
Justin Evans & Steve Tuttle
Water Tank Replacement Committee