Chapter 4: WaterDistribution 54 A. General The Applicant shall configure and size all water mains to meet the Performance Standards. Hydraulic designs are not limited to providing water service to a local area. The Applicant shall adapt the hydraulic design to function properly with the existing water distribution system and support the logical extension of the water distribution system. Designs shall accommodate system improvements when requested by the Director or designee. Extensions from water mains greater than 30-inches require written authorization from the Director. Relocation of existing water mains or facilities is the responsibility of the Applicant when proposed site development or site improvements creates a conflict or condition that does not comply with this Manual. The Applicant shall replace in kind water facilities in conformance with this Manual and with new materials. B. Layout 1. Location of Mains a. Where possible, the Applicant shall locate water mains under pavement or in a location that will permit the reasonable re-excavation without impacting other underground or above-ground utilities and/orstructures. The selected location for the water main shall minimize the amount of site restoration for future pipe excavation. b. Where possible, the Applicant shall locate water mains to minimize impacts to above ground site improvements, adjacent structures, other utilities, and concrete work (e.g., curb, gutters, sidewalk, trails, driveways, etc.) in areas where re-excavation of the water main will be needed in the easement. c. The Applicant shall, to the extent possible, maintain water line alignment within the shoulder of a road or single lane of traffic to provide the least amount of disruption if re-excavated. d. The Applicant shall not place water mains in dam/storm water embankments, slopes greater than or equal to 3:1, under structures, in reinforced soil areas (e.g., geo-grid, tie-backs) for a structure, in areas where re-excavation would undermine the support of a structure and require shoring, or in non-accessible areas. The Director or designee may require structural details, sectional views of the building’s loading plane, and engineering certification of the building foundation to confirm there are no impacts to future excavation. e. To the extent possible, the Applicant shall locate water mains above communication, electrical, fiber optic, gas, and duct bank or other types of dry utilities for data center development,. 2. Reliability a. Two (2) sources of supply from the existing water system are desirable to improve reliability, water quality, and operation of the water system. The Director reserves
