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File #: 21-311BPU    Version: 1 Name: Carollo Engineers PWO Third Amendment
Type: BPU- Report Status: Agenda Ready
File created: 9/7/2021 In control: Board of Public Utilities
On agenda: 9/16/2021 Final action:
Title: REPORT - PROJECT WORK ORDER AMENDMENT NO. 3 APPROVAL - PROFESSIONAL ENGINEERING SERVICES FOR THE LAGUNA TREATMENT PLANT DISINFECTION IMPROVEMENTS BACKGROUND: Ultraviolet light (UV) is the primary disinfection process for the Laguna Treatment Plant (LTP). In 2012, the State Water Resources Control Board Division of Drinking Water (DDW) re-evaluated and subsequently de-rated the disinfection system capacity from 67 million gallons per day (MGD) to 48.5 MGD, creating a disinfection deficiency under some wet weather conditions. The UV system has been operating over 20 years and is beyond its useful service life. Plant staff must provide greater resources to address disinfection system limitations such as periodic UV under-dose, coliform exceedance, and cleaning frequency issues. Santa Rosa Water staff, in conjunction with consultants and industry experts, determined the UV system needed to be replaced and in 2016, a Project Work Order (PWO) was awarded to Carollo Engineers, Inc to provi...
Sponsors: Board of Public Utilities
Indexes: EIR Previously Certified by City Council
Attachments: 1. Staff Report, 2. Attachment 1_Carollo Scope-Fee, 3. Presentation (added 9/14/21)