2025-06-27 PL-INT-2025-010858 Brown and Caldwell - Category PL.5

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County of Hawaii,Planning Dept. Section E PL.4)Community Planning(Community/Regional Plans,General Plan,Climate Adaptation) Fiscal Year 2025-2026 d. (1)TITLE AND LOCATION(City and State) (2)YEAR COMPLETED Chambers Creek Regional Wastewater Treatment Plant Expansion, PROFESSIONAL SERVICES CONSTRUCTION(ifapplicable) University Place,Washington 2021 2017 (3)BRIEF DESCRIPTION(Brief scope,size,cost,etc.)AND SPECIFIC ROLE❑x Check if project performed with current firm Process Design Lead.With a service population projected to increase by 130%over the next 30 years and increasingly stringent water quality regulations,the County needed to develop a flexible facilities expansion plan and process design upgrades for its Chambers Creek Regional WWTP. BC's cost-effective recommended design enabled the County to increase capacity by 50%, reduce chemical and energy demands,and incorporate a sidestream treatment process that saved $7M in operating costs. Located on a site integrating a 180-acre utility site into a 920-acre regional park on the waterfront,construction was coordinated with the 2015 U.S.Open golf championship, hosted at the Chambers Bay Golf Course.This project pioneered a model for sustainably co-locating community infrastructure in a recreational area without compromising the utility's ability to provide a high level of service.The $353M project represents the successful implementation of proprietary,sole-source technology under a GC/CM contracting procedure. Total Contract Amount: $65.9M Client: Pierce County, Dept. of Public Utilities e. (1)TITLE AND LOCATION(City and State) (2)YEAR COMPLETED Sea Level Rise Scenario Planning,Olympia,Washington PROFESSIONAL SERVICES CONSTRUCTION(ifapplicable) 2016 N/A (3)BRIEF DESCRIPTION(Brief scope,size,cost,etc.)AND SPECIFIC ROLE❑x Check if project performed with current firm Process Engineer.Given the Budd Inlet Treatment Plant's proximity to coastal water bodies and its location on a peninsula, Budd Inlet Treatment Plant is vulnerable to flooding from extreme weather and sea level rise. Acknowledging the potential risk, Lacey,Olympia,Tumwater, and Thurston Counties,through the LOTT Clean Water Alliance, have partnered with Brown and Caldwell to conduct a study that assesses how sea level rise and climate changes may affect the Plant.The study develops five scenarios as a benchmark for assessing the vulnerability of Budd Inlet Treatment Plant through the year 2050.The five scenarios consider projections of sea level rise, extreme tides,tidal waves,and storm surge phenomena, including compounding effects,and their corresponding impacts on the Plant. Total Contract Amount: $45K Client: LOTT Clean Water Alliance IBrown AND Caldwell STANDARD FORM 330(REV.7/2021) : 28