E-CAMP - Encina Wastewater Authority

P‐2.1.004Sea Outfall Ballast RestorationBackgroundBallast surrounds the outfall to provide protection of thepiping which is located on the ocean floor. Over time,ballast material can move and require replenishment andrepair. Project P‐2.1.002, Sea Outfall Maintenance andInspection – External, will document the extent ofrestoration required.Description Restore sea outfall ballast as recommended by theinspection to be completed in FY 2013.Figure P‐2.1.004View towards Sea OutfallJustificationThis project will provide sea outfall maintenance to avoid pipe capacity reduction or failure. Gradualor sudden failure of the outfall asset would be extremely serious. The ability to remove treated waterfrom the site could be interrupted for long periods of time or possibly permanently.Project DeliveryTraditional Design – Bid – ConstructP‐2.1.005Sea Outfall Bathymetric Survey – ExternalBackgroundThis project would complete a Bathymetric Survey of the exterior of the Sea Outfall, providing anexact location of the outfall and documentation of the pipeline and ballast material as well as abathymetric chart of the surrounding area. Multi‐beam technology measures the depth andquantifies a three‐dimensional image of the underwater facility. This information can be used togenerate cross‐sections and other analysis.Description Conduct a Bathymetric survey of the sea outfallJustificationThe survey will precisely locate the sea outfall, provide a baseline of the facility and surrounding area,and indicate overall condition. The baseline survey may be used to compare future surveys with thebaseline condition, for example following a seismic event.Project DeliveryRFP ‐ ContractE FY2014 E‐CAMP Report 2012‐12Dec.docx 58 December 26, 2012