18J.15.260 Water Supply Facilities

18J.15.260 Water Supply Facilities.

A. Applicability. The following provisions shall apply to all new water supply facilities.

B. Design Objective. Provide screening and setback requirements for water supply facilities to provide for security of such facilities while ensuring compatibility with surrounding uses.

a. Water Storage Facilities. The following setbacks and lot size requirements shall apply to water storage facilities:

(1) Water storage facilities that are 60 feet or less in height shall be set back a minimum of 30 feet from all property boundaries. This setback shall be in lieu of the setback requirements pursuant to the underlying zone classification.

(2) Water storage facilities in excess of 60 feet in height and within or adjacent to a residential zone classification shall be subject to one of the following standards, as determined by the applicant:

(a) Option 1. Setback Based Upon Height: The water storage facility shall be set back 30 feet from all property boundaries and a minimum of 1 foot for every 2 feet that the height of the facility exceeds 60 feet; or

(b) Option 2. Minimum Lot Area Requirement: The water storage facility shall be placed on a minimum lot area based on the following calculation:

(Tank Diameter in feet + Tank Height in feet)² =

Minimum Lot Size in square feet

For Example: Proposed water tower is 75 feet in diameter and 90 feet in height: (75 ft + 90 ft)² = 27,225 ft²

Setbacks on such sites shall be a minimum of 30 feet from adjacent residential zone classifications.

b. All other water supply facilities shall be set back according to the prescribed setback of the zone classification.

2. Design. These standards shall be used in lieu of any other landscaping standards required in Title 18J PCC, Design Standards and Guidelines.

a. Landscaping. One of the following landscaping options shall be implemented for all water supply facilities:

(1) A full screen buffer, Landscape Level 3 – L3, per PCC 18J.15.040 H.3., shall be provided along the perimeter of any proposed water storage facility or along the property boundary.

(2) Landscaping shall be provided throughout the site. All areas not occupied by buildings, on-site facilities and work areas, or required access shall be landscaped and maintained with groundcover, shrubs, and trees. Shrubs and groundcover shall be a maximum of 2 feet in height at maturity or maintained as such. Trees shall be disbursed throughout the site at a minimum of 20 tree units per acre (based on total acreage) and may be deciduous or coniferous. Native and drought-tolerant vegetation is preferred. Perimeter and buffer trees shall apply to this total requirement. Retention of existing vegetation may be incorporated to meet these requirements in part or in whole.

(3) For sites utilizing either option (1) or (2) above, when any planting is proposed between May and October, irrigation per PCC 18J.15.110.C.5 is required. Plantings shall be maintained for the duration of the use, and shall be replaced if disease, death, or removal of required landscaping takes place.

b. Fencing. When security fencing is proposed, it shall be constructed of natural materials or shall be coated with a dark, neutral color. Any fencing not meeting this standard shall be located behind a Level 1 – L1 Landscape Buffer, per PCC 18J.15.040 H.1.