Santaquin DRC approves Summit Data Center site plan; requires major water upgrades and 40‑ft drive access exception

The Santaquin Development Review Committee approved the Summit Data Center site plan with conditions on July 8, including requirements for significant water‑system upgrades to meet fire‑flow and pressure standards and an exception to city access‑width standards to allow a 40‑foot drive approach.

DRC staff summarized consultant modeling by Hansen, Allen & Luce showing that, to meet the required 2,700 gallons‑per‑minute fire flow and maintain minimum pressures, the water infrastructure serving the site will require upsizing in multiple places. The recommended configuration in the staff presentation calls for a 16‑inch diameter pipeline along the proposed route from Summit Ridge Parkway (including a pressure‑reducing valve on the hilltop), an on‑site loop with 10‑inch and 12‑inch branches, and upsizing an existing frontage line to 10 inches. Staff described the 16‑inch option as the recommendation from the model but said it is one of several feasible routes.

“Once it got into the site, it would split off to both a 10 inch line that would go north to provide looping and then 12 inch line that would loop around and catch the upper building,” staff said during the review. The DRC required that those upsize options be built to Santaquin City specifications regardless of whether the line is initially accepted as city‑owned.

Fire staff cautioned that sprinkler riser rooms typically require hydrants within 100 feet and recommended coordinating the sprinkler‑riser layout with the hydrant locations so that hydrants are installed as part of the waterline work rather than being cut in later. “You may need to add extra hydrants depending on where those riser rooms are,” Ryan (Fire) said. Staff also advised that the on‑site hydrant layout may need to be added to the waterline project if riser placement requires it.

The applicant described the proposed building as a co‑location data center (approximately 256,000 square feet), saying daily on‑site personnel could range from roughly 40 on a skeleton shift to as many as 300 when customer staff are present. The applicant confirmed limited domestic water demand aside from the fire protection system and said water would be used for cooling systems (not evaporative cooling). Staff noted a 2‑inch domestic meter is proposed for everyday use.

Other items DRC members required or requested include: submission of missing landscape, photometric and irrigation plans (the first submittal included them; the second did not); architectural treatment for any centralized dumpster enclosure; inclusion of the non‑city lift station location in the record; and coordination on routing and ownership of the new water main. Staff asked the applicant to provide technical red‑line corrections for engineering review and noted that the line should be built to city standards whether or not the city ultimately takes ownership.

The motion to approve included an explicit exception to allow a 40‑foot drive approach (10 feet wider than the standard 30‑foot access width). A DRC member moved the approval “with the conditions that an exception be granted for the width of the drive access, that it be allowed to have 40 foot wide ... and that the red lines be addressed,” and the motion passed by voice vote. The committee directed staff to deliver the red‑line comments to the applicant for resolution before final permitting.

The site will proceed to final engineering and permitting once the listed conditions are addressed and engineering red lines are resolved.