In C-2, C-3, C-4, C-5, I-1, and I-2, data centers are listed as accessory uses rather than principal uses. The MAZ separately retains “call center or data processing center” as a principal use. accessory uses

Accessory data centers are limited by zoning district: one per lot and up to 5,000 square feet in C-2; up to 10,000 square feet in C-3, C-4, C-5, and MAZ; and up to 50,000 square feet in I-1 and I-2. The stated horizontal measurement limit is 20 feet in each district. shall not exceed 50,000 square feet

Accessory structures, including data centers, cannot be in a front yard or a recorded or platted easement, and must generally be at least five feet from side or rear lot lines. prohibited in any front yard

An accessory data center larger than 10,000 square feet must be at least 2,500 feet from residentially zoned property, a residential structure, church, school, or park; set back at least 200 feet from perimeter property lines; and screened by at least two continuous rows of evergreen trees planted 10 feet on center along side and rear property lines. greater than 10,000 square feet

Data centers, including noise from generators, must not produce sound levels of 60 dBA or higher at or beyond any property boundary. 60 dBA

A data center requiring upgraded public utilities must pay the associated upgrade costs, and documentation from applicable utility providers must verify that service can meet the data center’s needs without negatively affecting utility customers. pay for the costs associated

Backup generators may be tested only Monday through Friday, from 9:00 a.m. to 5:00 p.m. Monday-Friday between the hours

All liquid-cooled equipment must use a closed-loop system, and cooling-system discharges to the public sewer must be pretreated to a level approved by the City’s Sewer Treatment Plant operator. closed-loop system

The height of any structure containing an accessory data center, including exhaust stacks, is limited by the height allowed in its zoning district. inclusive of exhaust stacks

Accessory data centers in commercial zones must undergo the commercial design guideline review process. commercial design guideline review process

Data centers are expressly allowed as accessory uses in the C-2, C-3, C-4, C-5, I-1, I-2, and Municipal Airport zones. They must be customarily accessory, clearly incidental, and subordinate to a permitted use; C-2 allows no more than one per lot.

The ordinance sets maximum floor areas for accessory data centers: 5,000 square feet in C-2; 10,000 square feet in C-3, C-4, C-5, and the Municipal Airport zone; and 50,000 square feet in I-1 and I-2. Each district’s provision also limits the horizontal measurement to 20 feet.