Tasha M. Kamegai-Karadi

Engineer of Merit
Nominated Categories
Young Engineer of the Year
Other Categories

SWE-OC, Member of the Year (2014)
California Registered Professional Engineer (2013)
National Sci. Foundation & Ford Honorable Mention (2011)
Stanford University Graduate Fellowship Recipient (2010)
Pearl Harbor Naval Shipyard, Mahalo Award (2010)
Chevron Scholarship (2008)
Bank of America Spirit Medallion (2007, 2008)
National Assoc. of Theater Owners Scholarship (2005)

Additional Files
Additional Information

Candidate Information

Tasha M. Kamegai-Karadi
ASCE Member?:

Geosyntec Consultants
2100 Main Street, Suite 150
Huntington Beach, CA 92648


B.S. Civil and Environmental Engineering- University of California, Berkeley (Honors)
M.S. Environmental Engineering - Stanford University


Client Confidential, Puente Valley, CA: Groundwater Extraction and Treatment for Potable Use
• Assists with project management support for a $3M project
• Supports engineering design and client strategy

Paint Manufacturing Facility, Santa Ana, CA: Groundwater Extraction, Soil Investigation, and Vapor Intrusion Investigation
• Performed field investigations for a commercial property impacted by chlorinated solvents.  The field effort included soil investigations, groundwater sampling, and sub-slab soil vapor sampling. 
• Performed vapor intrusion and risk assessment for protection of commercial workers.

De Haro, San Francisco, CA: Vapor Intrusion Investigation and Sub-Slab Depressurization System Design and Installation
• Performed field investigation and assisted with site characterization and soil vapor extraction (SVE) design for a commercial property containing soil impacted by chlorinated solvents. The field effort included installation and sampling of sub-slab vapor probes and soil sampling. She also assisted with the remedial design, installation, and monitoring of a sub-slab depressurization system.

Alameda Point, Alameda, CA: Bioventing system for BTEX Remediation
• Managed the preparation of a sampling and analysis plan, waste management plan, and construction drawings to support the remedial design and remedial action work plan for three sites for the Navy.
• Evaluated the adequacy of the existing monitoring well network, developed recommendations for additional monitoring well locations, and developed procedures for sampling, analysis, and decommissioning of monitoring wells. In addition, under the direction of the engineer-of-record, developed construction drawing and specifications for a novel bio-venting remedial design approach for Site 13.

Client Confidential, Oxnard, CA: LNAPL and Pesticide Remediation
• Task manager for the remediation of an operating retail facility that formulates organochlorine pesticides and herbicides. The site contains a LNAPL plume as well as a fumigant plume near an existing mixing/loading pad area.
• Managed a soil gas investigation and performed a vapor intrusion and risk assessment for the protection of commercial works.
• Managed CPT/UVOST™ and LNAPL investigation and performed analysis and evaluation to develop an LNAPL conceptual site model

Jet Engine Testing Facility, Ontario, CA: Groundwater and Soil Gas Monitoring and Well Installation
• Managed tasks for a jet engine test facility with volatile organic compound impacts to subsurface soils and groundwater on and off the site. Tasks included groundwater monitoring and reporting of on and off-site monitoring wells, soil gas monitoring and reporting, well installation, soil gas probe construction, and well destruction.
• Task manager for well installation utilizing ARCH and Mud Rotary drilling for wells 340 ft bgs, installation of nested soil gas probes from 245 to 95 ft bgs, and destruction of six wells.

Former Bulk Chemical Repackaging Facility, Santa Fe Springs, CA: Groundwater Monitoring
• Managed quarterly groundwater monitoring and reporting, including the analysis of field and laboratory analytical data and the assessment of groundwater extraction system performance.

Navy, Guam: High Purity Water Treatment Facility Design
• Managed interdisciplinary team to design a high purity water treatment facility in Guam to support Naval operations
• Contributed and coordinated to conceptual design of the treatment system


Tasha is very energetic, detail oriented, and thorough. Her happy nature and willingness to mentor others make her a joy to work with. - Brian Cozzens (Geosyntec)

Contribution to the Profession:

Ms. Kamegai-Karadi has contributed to the engineering profession in the following positions and societies.

2014-present: Professional Engineer, Remediation, Geosyntec Consultants
2013-2014: Senior Staff Engineer, Remediation, Geosyntec Consultants
2011-2013: Staff Engineer, Remediation, Geosyntec Consultants
2011: Water Resources Environmental Engineer Intern, Wright Water Engineers
2009 - 2010: Nuclear Engineer, Structural Analysis and Water Treatment for Submarine Reactors, DoD
2008: Health, Environment, and Safety Intern, Chevron Upstream Gulf of Mexico Business Unit

Society Affiliations
American Society of Civil Engineers
Groundwater Resources Association
Society of Women Engineers (OC Section VP, HI Section Professional Development Chair, ABJ Conference Speakers Chair)


Ms. Kamegai-Karadi has contributed to the community though the Society of Women Engineers. She is dedicated to the advancement of young girls and women in the engineering and technical profession.

2014 - Present
Society of Women Engineers, Orange County Section Vice President

2013 - 2014
Society of Women Engineers, Orange County Section: Professional Development Conference planning committee member, Dinner Meeting Chair

2010 - 2011 Society of Women Engineers, Santa Clara Valley Section: Designing Women Co-Chair

2009 - 2012
Society of Women Engineers, Hawaii Islands Section: Professional Development Chair, Region ABJ Conference Speakers Chair

Women in Engineering, Engineers Week Chair, Pearl Harbor Naval Shipyard

Suggested Award Summary:

Tasha Kamegai-Karadi has made significant contributions to the environmental engineering field since obtaining her B.S. degree in Civil and Environmental Engineering from UC Berkeley in 2009 and M.S. degree in Environmental Engineering from Stanford University in 2011.  After graduating from UC Berkeley, she worked for the Department of Defense as a Nuclear Engineer, performing engineering analysis for the Navy’s fleet of submarines stationed in Hawaii.  Additionally, she managed the design of a high purity water treatment system for reactor core cooling water in Guam.

After graduating from Stanford University, she joined Geosyntec Consultants as an Environmental Engineer in their Remediation Department.  With Geosyntec, she has contributed significantly to technical design and project management for large scale remediation projects in California.  Her projects have included assisting with design and management of a large scale groundwater extraction and treatment system for potable use, multiple vapor intrusion investigation and assessments, LNAPL conceptual site model, and groundwater monitoring.  Ms. Kamegai-Karadi is a California Registered Professional Engineer. 

In addition to her professional contributions, Ms. Kamegai-Karadi is dedicated to the advancement of women in the engineering field as an active leader in the Society of Women Engineers (SWE).  Currently, she is the vice president of the SWE Orange County Section and has served as the Professional Development Chair for the SWE Hawaiian Islands Section.  Additionally, Ms. Kamegai-Karadi has organized multiple outreach events for K-12 students. 

Project Awards

Burris Pump Station Project, Phase 1Skimming the Waters of Newport HaborSunset Ridge ParkLake Forest Sports ParkCoyote Creek Class I BikewayThe Anaheim Regional Transportation Intermodal Center (ARTIC) Corona del Mar Water Transmission MainSanta Ana River Interceptor (SARI Line) Relocation ProjectState Route 57 Northbound Widening (Central Phase)20 Story Office Tower and 8 Story parking Structure @ 650/670 Newport Center DriveTustin Ranch Road ExtensionBalboa Boulevard BeautificationPark PlaceSR 57 Widening North SegmentAnaheim Regional Transportation Intermodal Center (ARTIC)Irvine Regional Park Maintenance Building Replacement ProjectSand Canyon Avenue Grade SeparationSR-57 ImprovementsNewport Forcemain ProjectEmergency Roof Stabilization, Tustin Hangar 1Lower Santa Ana River Reach 9 Phase 2B ProjectNewport Beach Civic Center & ParkCity of San Clemente Recycled Water Expansion ProjectGroundwater Replenishment System Initial ExpansionCerritos Avenue Reconstruction and Sanitary Sewer Improvement Project Bristol Street Improvements Phase IINew Ocelot Exhibit at the Santa Ana ZooNewport Beach's Harbor Litter Removal ProjectBrookhurst Street Widening ProjectI-5/SR-74 Interchange Improvement ProjectOso Creek Multi-Use TrailPCH/Del Prado Street ImprovementsMarina ParkNewland, Edinger, and East Garden Grove Wintersburg Storm Channel Confluence SystemGobernadora Multipurpose BasinLincoln Avenue Widening over the Santa Ana RiverGilbert Street ImprovementsLAGUNA BEACH FESTIVAL OF ARTS FAÇADE/ENTRANCE PROJECTALEGRE AFFORDABLE APARTMENTSCow Camp Road Design – Phases 1A & 1BWest County Connectors ProjectWaste to Energy - Bowerman Power ProjectGlassell Yard Campus Stormwater Low-Impact Development Retrofit ProjectEsencia, Rancho Mission ViejoIrvine Boulevard Pedestrian BridgeOrange County Water District La Palma Groundwater Recharge BasinStanton Central ParkJeffrey Open Space Trail Emerald Bay Entrance WideningPeters Canyon (Wash) Channel Water Capture and Reuse Pipeline Project 91 Express Lanes Pavement Rehabilitation and CMS ReplacementMemory Lane Park, Santa AnaLa Pata Extension Project SR-91 Westbound WideningNewport Beach Country Club Clubhouse400 Spectrum Center Drive Soil Nail WallMyra 3 Stormwater Pump StationSunset/Huntington harbour Dredging and Waterline ProjectHuntington Beach Senior Center In Central ParkNewport Boulevard WideningCrown Valley Park Channel Entry ImprovementsAnaheim Convention Center Betterment VIIMackay ParkTesoro Zone II and Zone B Water FacilitiesPark Avenue Bridge over Grand CanalI-5/La Novia RoundaboutDairy Fork Wetland and Habitat RestorationJeffrey Road Park n' Ride Lot Expansion ProjectTustin-Rose Grade Separation Project, Part of the OCTA OC Bridges Grade Separations ProgramArgyros Girl Scout Leadership CenterWagon Wheel Creek Restoration and Stormwater ManagementOCTA OC Bridges ProgramABC Green Home 3.0 ProjectLaguna Beach Festival of the Arts Grounds RenovationOrtega Highway Emergency Repair ProjectThe Tracks at BreaBaker RanchCity of Buena Park Fire Station No. 61Arlington Drive Bioswale & Dry Weather Diversion ProjectAltair IrvineVillage Pond Park/Veterans Park RenovationMid-Basin Injection: Centennial ParkAgua Chinon CorridorTarbut V’ Torah Phase III & Phase IVRancho Mission Viejo Joint-Use PavilionI-5 HOV Improvement Project between Avenida Pico and Avenida Vista HermosaOrange County Great Park Sports ComplexCrawford Canyon Road Drainage Improvements & ReconstructionSouth Cove DevelopmentGreat Park Ice & FivePoint ArenaLido House HotelBroadcom Corporate Campus (now FivePoint GatewayWest Orange County Water Board Feeder No. 2 RelocationNewhope-Placentia Trunk Sewer Replacement Project State College Boulevard Grade SeparationLos Patrones ParkwayRancho Mission Viejo Multipurpose Path Urth Caffe - OrangeSR91 Widening from SR-55/91 Separation to SR-241/91 SeparationEdwards Lifesciences Parking Structure

Candidate Awards

Natalie A. Meeks, P.E.Tasha M. Kamegai-KaradiYazdan (Yaz) T. Emrani, P.E., Byron Tobey, PE, QSD, LEEP APEric WalkerGidti Ludesirishoti Victoria PilkoPratanu GhoshSteven R MarvinPhil Jones, PE Joshua Nelson, PEVictor AguirreKenneth H. Rosenfield, PEGeorge A. Jurica, PETom BogardRavi Shah, PE, QSP/QSDAmy Choi, EITElizabeth Ruedas, EIT, ENV SPMujahid ChandooRoxanne FollisAmir Aghakouchak, Ph.D., M-ASCE, P.E.Fred MinagarJeffrey Okamoto, PEHarvey GobasChloe GhariosKevin Onuma, P.E.Ryan ChamberlainDr. Adrian MooreMichael Pierce, A.M.ASCERemi Candaele, PE, MS, QSD/QSP, M.ASCEThomas A. Broz, P.E., S.E, F.ASCEKaren Cervantes, S.M.ASCEIsamar Escobar, A.M.ASCEKevin Kondru, P.E., M.ASCEDouglas J. Johnson, P.E., M.ASCEJeremy Redman, PhDChristopher HaireMojgan Hashemi, P.E., M.ASCEOC Report Card Executive CommitteeSteven J. Huff, P.E., M.ASCEWilliam Bennett, P.E., M.ASCEBruce Phillips, P.E.Brad Dybel, PEBryant WongGyssela (Jazzy) Quinabo, E.I.T.Nestor Godinez, PEProfessor Joel LanningElizabeth RuedasDave LoweWei KooBill LawsonAmber GanapathyBob KallenbaughState Senator Josh NewmanGary UrbanDr. Sudarshan KurwadkarClint Isa, PEJason Fix, PEChirath "Chuck" KarunathilakeAmber ShahAshlyn AlexanderJohn C HoganMarionne Philline LapitanDr. C.T. Bathala, PhD, P.E.Kevin Du Mont, P.E.Ziad Mazboudi, P.E., D.WRE, MBADavid Frattone, P.E.Lisa BartlettJennifer BohenGyssela (Jazzy) Quinabo, E.I.T.Andrew Pham, PE, City of IrvineMatthew Cugini, PE, CaltransFarzian Zareian, Ph.D.Thomas T. Kim, PEDon Hoppe, PEDoug Staley, PERavi Shah, PEMark Vukojevic, PEDavid Naish, PhDLacy KellyGary L. Miller, PEKenneth RosenfieldAndrew Easterling, EITSteven L. King, PESteven R. Marvin, PEJose G. Jimenez Jr.

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