E-CAMP - Encina Wastewater Authority

JustificationProject will improve operational efficiency by allowing for larger volumes of polymer to be deliveredwhile maintaining operation. This reduces the risk of disrupting operation by running out of polymer,and avoids wasting excess polymer.P‐3.3.018Centrate Pipeline ReplacementCentrate and DAFT drainage are conveyed through Manhole No. 4. Valving on the system can beconfigured to convey flow to the PE pipeline or the primary influent gallery. EWA conducted CCTV ofthe pipeline to the primary influent gallery. It was observed that the pipeline dips as the CCTVsubmerged while moving along the alignment. It is assumed that there is settlement along thealignment and the impact to the centrate pipeline is unknown. This project address the deficienciesof the system.P‐3.3.019Centrifuge Drive ReplacementBackgroundEWA operates three centrifuges to dewater stabilized sludge prior to drying. The centrifuge driveshave required more maintenance than anticipated, and also has resulted in extended outage time.The General Services Department has identified alternate centrifuge drives to reduce outage timeand provide advantageous life cycle costs.DescriptionReplace Centrifuge Drives with new from alternative manufacturer.JustificationThis project will realize cost savings through reduced maintenance. The project also will result in amore reliable centrifuge operation, which is required for drying system operation.Project DeliveryTraditional Design – Bid – ConstructCoordinate with the condition assessments of Centrifuge Nos. 1 and 2, Maindrive and Backdrive,condition assessment scheduled as CA‐8.1.004 in FY 2015. Refer to E‐CAMP Section 3.3.P‐3.3.020Dryer Drum RepairBackgroundBased on field assessment, repairs are needed to the dryer drum.DescriptionComplete dryer drum repairs in accordance with manufacturer recommendations.JustificationThe dryer is a singular facility critical to the process of biosolids reuse.Project DeliveryService Contract with ManufacturerE FY2014 E‐CAMP Report 2012‐12Dec.docx 81 December 26, 2012