North Clackamas Aquatic Park is an interactive water play adventure that features a 400,000-gallon wave swimming pool, 3 water slides, a 29-foot rock climbing wall, a toddler splash zone, a six-lane lap pool, and a 13-foot diving well. During Big Surf! recreational hours, divers plunge into 13-foot-deep water as swimmers on rental tubes crest the wave pool’s 4-foot surf, competitive swimmers hone their skills, and climbers scale a three-story rock wall. A drop slide sends adventurous aquanauts plunging. The park also includes an adult hot tub, interactive fountains, and a kiddie pool.

The owner of the North Clackamas Aquatic Park turned to Willdan to install multiple energy-saving projects at the park. The scope of work included a lighting upgrade to replace the indoor metal halide light fixture with new fluorescent and LED light fixtures, a new high-energy boiler system and appropriately sized heat exchangers, and optimization of the natatorium ventilation system.

  In the first year, the park saved more than $56,000 in energy-related costs. Annual energy consumption was reduced by approximately 297,675 kilowatt-hours and 37,387 therms, decreasing utility bills by more than 20 percent.  


Willdan performed an energy audit of the aquatic park facilities and developed a contract to provide new equipment – while at the same time trimming the park’s yearly utility bill by $56,000 per year. The $846,000 project is making the park more energy efficient with funds used to replace 35- to 50-year-old boilers, upgrade lighting and renew building controls.

STRIKING THE RIGHT BALANCE

Willdan reins in utility costs while increasing comfort

In most natatorium designs, space and water must strike a comfortable balance to minimize evaporation. Willdan modified the supply air and return air systems for improved air distribution, relocated supply fans, and replaced the heat wheel with new media sized for an optimized system. Our staff also provided return air capability, automatically varying the amount of ventilation air (and total airflow), as needed, to maintain comfort and minimize energy use.

Semco, the heat wheel manufacturer, requires that the replacements and reconditioning be performed and verified by factory personnel. Due to the high cost of this item and the subcontracted nature of work, both our selected mechanical contractor and Willdan provided this alternate at a minimal markup to the owner to cover coordination, carrying costs and bonding.

The upgrades have allowed the owner of North Clackamas Aquatic Park to cut energy and operating costs while improving the quality of its aquatic park and maintenance practices environments. In the first year, the park saved more than $56,000 in energy-related costs. Annual energy consumption was reduced by approximately 297,675 kilowatt-hours and 37,387 therms, decreasing utility bills by more than 20 percent.

SUMMARY

Energy Savings:

  • 297,675 kWh
  • 37,387 terms

Estimated Annual Utility Cost Savings:

  • $56,500

Total Utility Incentive Rebate:

  • $121,031

Business Energy Tax Credit (BETC) pass-through dollars:

  • $176,386

Project Implementation Costs:

  • $860,000

Project Simple Payback:

  • 6 years

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