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O78 that the utilities provide adequate notice to its customers of any service disruptions. Consideration will be given to the undergrounding of overhead electrical and telephone lines as part of the project. The City of Santa Ana's Public Works Director will coordinate closely with all agencies and companies which maintain underground or at-grade utility or energy facilities within the areas to be disturbed by project construction activities. Preliminary and final design plans will be made available to such agencies for review and comment. At least 48 hours prior to commencement of any excavation activities, the City will contact the Underground Service Alert to notify the affected utility/energy purveyors who can place their personnel at the excavation site to assist in the location of underground facilities during the exploratory digging immediately preceding excavation. In this manner, the risk of line rupture to natural gas, petroleum, and sewer facilities, which might release hazardous substances and odors into the air, can be minimized. Rationale. Relocation and/or undergrounding of overhead utility facilities is a very routine aspect of major street construction, such as the proposed project. The utility purveyors employ specialists who will be contacted by the City's engineers (or consulting engineers) during the final design of the proposed improvements to properly identify all affected utility facilities and to prepare strategies for safe relocation/undergrounding and for interim service, if needed. Advance notification to the various utility purveyors prior to commencement of construction and excavation will allow these companies to provide field personnel during construction to assist the contractor in locating, relocating, and undergrounding affected facilities, as appropriate, and in connecting interim service facilities as needed. Advance notice to utility customers of pending or possible service disruptions will enable affected customers to plan accordingly and to make whatever arrangements they feel are necessary to function adequately during that short-term disruption of utility service. Undergrounding of existing overhead electrical and telephone lines would reduce visual clutter in this corridor and help prevent damage to such facilities by removing them from direct public contact.