Item A-MWMC Facilities Plan - Laserfiche WebLink

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Project Name: Filtration. (10 mgd) - Part 1 Description: Filtration: includes infrastructure/support facilities for 30 mgd of filters; install filter cells sufficient for only 10 mgd. Justification: An estimated 30 mgd of filters is required by 2010 to meet dry season mass limits. Facility Plan proposes phasing filters in sooner to facilitate development of Level 3 and Level 4 reuse. Provides high quality secondary effluent and potential level 4 reuse water. Also, needed to assist with meeting wet season mass load requirements during peak flow events (under all peak flow management alternatives). Project Driver: Performance reliability to meet the dry weather NPDES total suspended solids limits of less than 10 rog/L, reuse development, and compliance with peak flow management. Project Trigger: NPDES permit compliance for TSS: Dry weather maximum month flow in excess of 49 mgd. Also, initially to provide higher quality effluent so that reuse can be developed. Type of Project 25% Capacity; 75% Performance Estimated Project Cost $10,100,000 (2004 Dollars): Phasing: Budgeted for FY2008/09 Project Name: New Bankside Outfall Description: Bankside outfall to accommodate 117 mgd (277 mgd less 160 mgd which is the estimated capacity of the existing outfall system after secondary treatment modifications. Justification: New bankside outfall is required to pass the peak wet weather flow to the river. Project Driver: After secondary treatment modifications are made, a maximum peak flow of 160 mgd can pass through the existing outfall box without submerging the secondary clarifier weirs. Project Trigger: Peak wet weather flows in excess of 160 mgd. Type of Project 100% Capacity Estimated Project Cost $1,500,000 (2004 Dollars): Phasing: Budgeted for FY2009/10