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Coastal Branch Pipeline Operating Pressure Class Evaluation

Central Coast Water Authority

WSC provided professional engineering services to investigate the potential for increasing flows through the Central Coast Water Authority’s (CCWA) Coastal Branch pipeline through an evaluation of the operating pressure class rating for the section of pipeline from the Energy Dissipation Valve (EDV) to Tank 5.

WSC developed an operating pressure class HGL plot for the section of pipeline between the EDV and Tank 5.  WSC utilized the operating pressure class HGL plot to develop a new delivery scenario that maximizes the flow rate through the Santa Maria turnout, while maintaining contract flow rates at all other turnouts.  The evaluation provided an estimate of the maximum capacity of the pipeline to deliver water to the Santa Maria turnout given the existing infrastructure.  WSC evaluated potential options for increasing the operating pressure class rating of the pipeline to further increase capacity.

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