Data centers are allowed only in the industrial zoning districts M-1, M-2, and O-I.

The amendment limits qualifying data-center uses to activities identified by NAICS Codes 518210 and 541513.

A data-center site must contain at least 20 acres.

Where a data center adjoins single-family residential property, its height is limited to 40 feet for the first 100 horizontal feet from the shared property line.

A 50-foot planted landscape strip must be provided along public roads, although existing vegetation and natural topography may substitute if the Director finds they provide appropriate screening.

A data center adjoining residential property must provide a buffer at least 100 feet wide.

Within a required residential buffer, the first 25 feet along the property line must remain undisturbed except for approved fencing, access, and utility improvements; if the remaining buffer is disturbed, at least three rows of evergreen shrubs at least four feet tall at planting must be installed as needed for screening.

Building facades facing public roads and longer than 250 feet must be articulated through features such as changes in the facade plane, windows, recessed panels, trellises, landscaping, wall articulation, or arcades.

Loading bays facing public roads or residential uses must be screened from view.

Cooling, ventilation, and power equipment, including emergency generators and other emergency power equipment, located closer to a public road or residential use than the main building must be enclosed or screened by a three-sided opaque barrier extending at least 12 inches above the equipment and dense vegetation.

Exterior lighting must use fully shielded fixtures that direct light downward and into the property, away from roads and adjacent properties.

Between 11:00 p.m. and 7:00 a.m., noise at a property boundary shared with residential use may not exceed 55 dB(A) or 10 dB(A) above ambient levels, whichever is higher.

Between 7:00 a.m. and 11:00 p.m., noise at a property boundary shared with residential use may not exceed 65 dB(A) or 10 dB(A) above ambient levels, whichever is higher.

Backup generators may exceed the maximum sound levels only during emergency power outages, and generator testing is limited to 9:00 a.m. through 5:00 p.m.

Substations serving data centers as accessory uses may not be located within 300 feet of an adjacent public road.

Data centers must provide at least three parking spaces per 1,000 gross square feet of office space occupied within the development.

Creates a defined data-center use and allows qualifying data-processing, hosting, and computer-facilities-management operations as permitted uses in the M-1, M-2, and O-I industrial districts. The qualifying classifications are NAICS Code 518210 and NAICS Code 541513, and the measure states that these uses will be allowed in the COSF industrial zoned districts; M-1, M-2 & O-I.

Treats substations serving data centers as accessory uses, allowing them to support a data-center development without being identified as a separate principal use. The substation must be at least 300 feet from an adjacent public road, as provided in the measure's substations provision.

Allows backup generators to exceed the data-center noise limits during emergency power outages, supporting continued operation during emergencies. Generator testing is limited to 9:00 a.m. to 5:00 p.m., under the backup-generator exception.

Allows existing natural topography and vegetation to substitute for the required 50-foot planted road landscape strip when the Director determines that they provide appropriate screening, which can reduce the need for new landscaping. This alternative is subject to the Director's finding under the landscape-strip provision.