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FIRM OVERVIEW AND BACKGROUND <br /> chy ee se to e.rhar. - Montecito Warr Marini <br /> f{// GkrW Teetmeek Pl t r Ulla One Water Tenement Plant <br /> ,.( <br /> City W Santa Eaibara e. .. . <br /> l EIE tem Wen navource Cann Son i,,„,ean.ay O&Yrlet ,,a",=„r"EI 4 1111 <br /> M l+ f a!W. 9aatm'Tretlm M PLM -s ":„V.. <br /> — <br /> .�---- <br /> r ... ynyti. m BW ._ I... I � 11 �} kai 1st <br /> . '.. 1�'. .. ,+ +,.• ..tel- <br /> _ ..,(r 1OE <br /> '' Wastewater Treatment Flanl .., <br /> r.sd■ <br /> • <br /> CarpinteruS Niry O:r 0 y V" - � <br /> ,._,om. <br /> Montecito Water and Sanitary Districts, CA City of San Diego, CA <br /> Enhanced Recycled Water Feasibility Study PureWater San Diego <br /> The MWD completed a Recycled Water Facilities Plan in 2019 The City is implementing the Pure Water San Diego Program that <br /> that identified top potential uses of recycled water along with will generate one third of San Diego's potable water supply using <br /> recommended next investigative steps.This collaborative project, recycled water.In early 2015,the City retained Stantec to provide <br /> contracted in partnership with MSD,builds on the previous effort by program management services for this$2.7 billion program—a <br /> evaluating regional partnerships and developing next steps,as well phased,multi-year effort that uses proven technology to produce <br /> as incorporating updated information,such as the State of California's a safe,reliable and cost-effective water supply for the City.The o <br /> draft direct potable reuse(DPR)regulations. Program will help the City overcome its water challenges by <br /> transforming the City's water system into a complete water cycle o <br /> This project incorporates four distinct approaches to identify = <br /> that maximizes use and reuse of the City's water supply.The D <br /> Montecito's preferred method of maximizing wastewater original implementation plan for the Program envisioned 15 mgd of D <br /> reuse capabilities.The potential options included in the study purified water production by 2023,30 mgd by 2027,and 83 mgd <br /> are as follows: by 2035.Now,the City's plan involves 30 mgd of purified water z <br /> z <br /> ■ Montecito Non-Potable Reuse(NPR)–local project producing production by 2021. c <br /> 0 <br /> tertiary quality water for irrigation of large commercial and In 2017 Carollo was contracted to design the first potable water m <br /> institutional landscapes in Montecito. reuse facility in the program,the$367 million,34-mgd North City o <br /> m <br /> ■ Carpinteria Indirect Potable Reuse(IPR)–regional project Purified Water Facility(NCPWF).The new facility will produce safe, ? <br /> partnering with neighboring special district(s)and the use of the high-quality drinking water using a pilot-proven,five-step water o <br /> Carpinteria Groundwater Basin. purification process of ozonation,BAC filters,membrane filtration, ° <br /> m <br /> ■ Montecito Direct Potable Reuse(DPR)–local project in R0,and UV disinfection with sodium hypochlorite advanced o <br /> oxidation.Each of these processes is designed to achieve a safe and z <br /> Montecito utilizing treatment at Montecito Sanitary District and D <br /> raw water augmentation at the Montecito Water District water reliable water supply for California's first surface water augmentation m <br /> treatment facility. IPR facility. o <br /> m <br /> to <br /> ■ Santa Barbara DPR–regional project partnering with the City The facility will purify tertiary effluent from the NCWRP to meet the < <br /> of Santa Barbara involving raw water augmentation at the City's recently published(July 2017)Title 22 California Code of Regulations w <br /> N <br /> regional Cater Water Treatment Facility. for surface water augmentation IPR to discharge to Miramar I <br /> Future implementation of water reuse will produce a new local Reservoir.While groundwater recharge IPR facilities have been in A <br /> drought proof water supply for the community and reducing the operation in California for decades,NCPWF will be the first that o <br /> augments surface water for potable reuse.NCPWF will send 30 K <br /> discharge of treated wastewater to the ocean.The analysis considers zC <br /> local and regional partnerships,non-potable and potable reuse mgd to the Miramar Reservoir and 4 mgd back to NCWRP to reduce <br /> alternatives,and various treatment methods and technologies. the total dissolved solids concentration in the chlorine contact tank D <br /> effluent for downstream non-potable water reuse(irrigation). z <br /> This project involved a holistic evaluation of wastewater treatment, c <br /> tertiary treatment,and advanced treatment to meet a range of Carollo completed the design and focused on improving process <br /> performance,reliability,and safety in the final design to meet K <br /> effluent discharge and water reuse requirements,with a focus upon a <br /> a core reliable treatment train that can be enhanced as water reuse stringent product water requirements enforced by the California D <br /> transitions from non-potable to potable in the future. Division of Drinking Water. <br /> D <br /> O <br /> z <br /> CAROLLO / QUALIFICATIONS /JUNE 2023 26 <br /> B:\Pursuits\Client831HON)\HawaiiCounty\EnvMgmtDept\On-Call FY23-24\Qual0623\PL.4 CmntyPing_Cmnty\Indd\01_FirmOverview_PL4 <br />