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<br />TETRATECH Man Hong (Eric) Yuen, RE., S.E.
<br />Structural Project Manager
<br />Mr. Yuen has over 12 years of experience in the design, analysis and detailing in
<br />Project Role:
<br />structural engineering. He is knowledgeable in reinforced concrete, masonry,
<br />Project Manager
<br />structural steel and wood frame design, and construction for a variety of budding
<br />and infrastructure projects including reservoirs, water/wastewater treatment
<br />Education:
<br />facilities, as well as seismic retrofit of existing structures.
<br />M.S., Civil and Structural
<br />Engineering, California State
<br />EXPERIENCE
<br />Polytechnic University, Pomona
<br />2016
<br />Hunting Horn Reservoir Structural/Seismic Evaluation, City of North
<br />B.S., Civil Engineering, California
<br />Tustin, CA, Golden State Water Company, 2019 As Project Manager, Mr.
<br />State Polytechnic University,
<br />Yuen is responsible for the overall project to provide professional
<br />Pomona,2007
<br />engineering/technical services including onsite reconnaissance inside the
<br />Registrations/Certifications:
<br />reservoir to prepare a structural and seismic study and evaluation. The Hunting
<br />Professional Engineer, California
<br />Horn Reservoir is a semi -buried reinforced concrete cylindrical water tank that
<br />2009, No. 75983
<br />was first constructed in 1900, converted to concrete in 1918, and gunite-lined in
<br />1950. The reservoir has a capacity of 0.44 MG, measures approximately 72 feet
<br />P h' PP Y
<br />Structural Engineer, California
<br />2014, No. 6177
<br />in diameter and 16 feet high and has a wood frame roof. Over the years it has
<br />developed cracks in the interior shell that have been patched and has a slow leak
<br />Structural Engineer, Oregon
<br />that is visible from the exterior and requires assessment and repair. Tetra Tech
<br />2019, No. 94532PE
<br />prepared a comprehensive engineering study and seismic evaluation of the tank
<br />Professional Engineer, Colorado
<br />to examine the alternatives available to GSWC for either repair or replacement.
<br />2019, No. 56159
<br />Lower Acacia Reservoir (1-D) Structural Rehabilitation, Design Phase
<br />Services and Construction Management, City of Fullerton, CA 2017-2019 — Cal DES Safety Assessment
<br />Project Manager responsible for the inspection and engineering services, Program Evaluator Training
<br />structural rehabilitation Design Phase, Bid Phase and Construction Support Professional Affiliations:
<br />Services for the improvements to the Lower Acacia Reservoir, a 4MG American Institute of Steel
<br />rectangular concrete tank predominately buried constructed in 1964. Construction
<br />13th Street Underground Reservoir Structural Retrofit, City of Ontario, CA
<br />Field Safety Certifications
<br />2012 — Mr. Yuen served as Structural Design Engineer for this project. The
<br />primary objective of this project was to reduce the potential damages to the
<br />Fall Protection (Ladders,
<br />Scaffolding, Aerial Lifts)
<br />reservoirs in the aftermath of an earthquake that may jeopardize public safety
<br />312018
<br />both in the local Upland neighborhood they are located in or the Ontario
<br />community they serve miles away.
<br />H2S Protection Training
<br />Respiratory Protection Training
<br />In 2008, the City had a Reservoir Seismic Vulnerability Evaluation Report
<br />Confined Space Training
<br />(Seismic Report) performed by Tetra Tech on all of its reservoirs to determine
<br />(912019)
<br />their ability to resist current seismic code loads. The Structural Evaluation of the
<br />office:
<br />Report evaluated each of the seismic force resisting components of each of the
<br />San Dimas, California
<br />reservoirs and provided seismic retrofit recommendations for those found to be
<br />deficient. The recommended retrofit recommendation for the 13th Street
<br />Years of Experience:
<br />Reservoir is a cast -in -place reinforced concrete overlay which is added to the
<br />(2007)12
<br />walls, roof, and floor of each reservoir.
<br />The Preliminary Engineering Design Phase will include the necessary
<br />Years with Tetra Tech:
<br />engineering services that will confirm the findings and recommendations of the
<br />(2007)12
<br />2008 Seismic Report (or recommend another less time consuming, cost-effective
<br />alternative) and result in the production of the a Preliminary Design Report
<br />(PDR) and preliminary design drawings that will be used as a basis for the Final
<br />Design and ultimately, the Final Construction Documents.
<br />25B-178 Page
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