The following is a list of engineering consultants who have been approved in the past to conduct independent consultant inspections as described in Part 12D of the Commission's regulations. Previous approvals are not sufficient for future Part 12D inspections. Each Part 12D independent consultant inspection requires specific approval. Commission regulations require submission of the consultant's resume for approval at least 60 days before the start of the inspection.


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


Consultant Firm
A
Christopher AbelaAECOM
Terrence E. ArnoldAECOM
Chris AdamsCivil Dynamics, Inc.
Ron AdhyaThe Kohan Group, Inc.
Nicholas AgnoliApplied Weather Associates
B.A. AinsworthConsulting Engineer
Rebecca A. AllenKleinschmidt Associates
Richard G. AlmesAlmes & Associates, Inc.
Vincent E. AmatoConsulting Engineer
Jonathan AndrewsGZA GeoEnvironmental, Inc.
Jeff AndersonMead & Hunt
Keith AndersonAnderson & Kelly. Inc.
Paul H. AndersonConsulting Engineer
Richard AndersonGEI Consultants
Wade AndersonFreese and Nichols
William D. AshtonAshton Barnes Engineers, Inc.
Glen M. AurdahlSverdrup Civil Inc.
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B
David R. BaierIndependent Consultant
Jeffrey M. BairBlack & Veatch Corporation
Matthew BalvenHDR
James R. BakkenAyres Assoc.
Maurice S. BandyArcadis, Geraghty & Miller
William J. BardinLeedshill-Herkenhoff, Inc.
Joseph BarnesConsulting Engineer
John BarrettGeosyntec Consultants
Joseph P. BartleyJoseph P. Bartly
Donald L. BasingerAG&E-Schnabel
Jason BeardHDR
Archie BecherBecher Hoppe
Joseph V. BelliniAterra Solutions
Diego Rivera BenardColliers
Glen S. BengtsonSEH Inc.
Stephen A. BensonSchnabel Engineering
David Bentler Black and Veatch
Paul L. BerubeKleinschmidt Assoc.
James A. BeshaBesha Assoc. Engineering Corp.
Justin BeutelGFT
Evan BinderSchnabel Engineering
William B. BinghamGEI Consultants
George S. BinghamHaner Ross Sporseen Inc.
Norman A. BishopKnight Piesold Consulting
Gerard R. BlanchetteThe H. L. Turner Group, Inc.
Maurice BlockGray & Osborne, Inc.
Harry BlohmMWH Global
Andrew R. BlystraA.R. Blystra Associates, Ltd.
Andi BogdanovicKGS Group
Martin D. BonnellEWI Engineering Assoc.
Jason BoomerAECOM
Paul E. BoothArcadis
James E. BorgD & H Concepts, LLC
Robert R. BowersO'Brien and Gere Engineers
Peter BouchieWSP
Randy BowersoxGFT
Donald E. BowesConsulting Engineer
Mr. Randall D. BoyceBlack & Veatch
John P. BradshawHayes, Seay, Mattern & Mattern
Scott BrandBlack & Veatch Corporation
Donald A. BresslerChen-Northern, Inc.
Glenn W. BrewerDevine Tarbell and Associates
Toby BrewerConsulting Engineer
William BroderickRizzo Associates
Ellis N. BrownAcres International Corp.
Catrin BryanMcMillen
John H. BryantStone & Webster Engineering Corp.
Miles C. BubenickConsulting Engineer
Lloyd BubenikKleinschmidt Assoc.
John BuckleyConsulting Engineer
Jesse C. BumgarnerPinnacle Engineers PC
Marc D. BurattoWSP | Parsons Brinckerhoff
Scott BurchGannett Fleming, Inc.
Gilles BureauURS Corp.
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C
Nicholas A. CampagnaGoldberg-Zoino & Assoc., Inc.
David B. CampbellSchnabel Engineering Associates
Michael J. CarneyR.W. Beck
Chris CarpenterCornforth Consultants
Michael D. CarpenterGEI Consultants
Edward F. CarterMWH Global
Nicholas M. CiomeiKleinschmidt Associates
Wallace I. ChadwickWallace I. Chadwick
Robin G CharlwoodRobin Charlwood & Associates, PLLC
David. B. CherryConsulting Engineer
Brian ChrismanHDR, Engineering, Inc.
Frank O. ChristieChristie Engineering
Kin Y. C. ChungGilbert/Commonwealth, Inc.
Jeffrey H. CoffinKleinschmidt Associates
Thomas J. CollinsConsulting Engineer
Marvin A. ConesBlack and Veatch
Louis H. ConklinStone & Webster Engineering Corp.
J. CooksleyConsulting Engineer
Aimee CornGannett Fleming
Derek H. CornforthCornforth Consultants, Inc.
Charles F. CornsCharles F. Corns, Inc.
Clifford. J. CortrightWahler Assoc.
William R. CoteSt. Johns River Water Management District
Larry O. CoupeR.W. Beck & Assoc.
Chad W. CoxGZA GeoEnvironmental, Inc.
Theodore CritikosStone & Webster Engineering Corp.
Gerald L. CrossCross Associates LLC
James CrowderSchnabel Engineering
Dan CurtisGeosyntec Consultants
Paul E. CyrKleinschmidt Assoc.
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D
Timothy K. DahlstrandSTS Consultants, Ltd.
Alton P. Davis, Jr.Arkwright Technical Svc, Inc.
Amy DeakyneKGS Group
Jessica DeBellisKleinschmidt Associates
Lee DeHeerCH2M-Hill
Jared D. DeibleHDR
John G. DeLanoGZA GeoEnvironmental, Inc.
Nicholas DempseyHDR
Gordon DenbyConsulting Engineer
John J. DevineNorthrop, Devine, & Tarbell, Inc.
John D. DicksonBARR Engineering Inc.
Zoes J. DimosRivers Engineering Corp.
Eric J. DitcheySchnabel Engineering Assoc.
R. Conrad DodlWiley & Wilson
Anthony R. DolcimascolaTAMS Consultants, Inc.
Thomas D. DonovanGAI Consultants, Inc.
Richard L. DonovanConsulting Engineer
Stephen C. DoretMill Road Engineering
Kenwarjit DosanjhHDR
Dana M. DoughertyAyres, Lewis, Norris, & May Inc.
Hugh J. DoughertyPennoni Associates, Inc.
Bill DresselBarr Engineering Company
Paul DrewKleinschmidt Associates
Bryan DuevelMcMillen Jacobs Associates
F. DunbarR.W. Beck Assoc.
Neal DunlevyIndependent Consultant
Dean DurkeeGannett Fleming, Inc.
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E
James D. EarlesCH2M Hill
John L. EddyConsulting Engineer
Wayne D. EdwardsW.D. Edwards Consulting, LLC
Steve ElverGEI Consultants
Matthew EmrickGEI Consultants
Philip J. EnglebertSEC Donohue, Inc.
Melvin I. EsrigConsulting Engineer
Jaco EsterhuizenJACOBS ch2m
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F
Matthew FarrenGEI Consultants, Inc.
William K. FayConsulting Engineer
Keith A. FergusonHDR, Engineering, Inc.
Carl L. FickBrown & Root Inc.
Jonathan S. FieldIndependent Consultant
Robert FilgasHDR
R. Craig FindlayFindlay Engineering Inc.
Mario FinisMWH Global
Kevin FinnGZA GeoEnvironmental, Inc.
John E. FisherLawson-Fisher Assoc.
Thomas J. FitzgeraldSchnabel Engineering
Anne FitzpatrickWSP
Michael ForrestAECOM
Henrik ForslingAECOM
William J. ForsmarkBarr Engineering Company
George M. FoshaW.W. Wheeler & Assoc., Inc.
John FranceJWF Consulting, LLC
Kurt H. FranceConsulting Engineer
Dorian FrenchBGE, Inc.
James K. FullerCH2M-Hill
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G
Jennifer N. GagnonHDR
Eugene GallConsulting Engineer
Kami D. Deputy GardellaSchnabel Engineering
Carl W. GarnerConsulting Engineer
Charles T. GaynorEmpire Soil Investigation Inc.
Ryan Gee FDK Engineering
Kevin GerstHDR
James L. GilmoreEBASCO Services, Inc.
Conrad GintherGeosyntec Consultants
Jerry A. GomezGomez and Sullivan Engineers PC
Damian GomezGomez and Sullivan Engineers PC
Richard E. GoodmanConsulting Engineer
Bernard B. GordonBernard B. Gordon, Inc.
Richard H. GornyBlack & Veatch Engineers
Charles B. GrantGEI Consultants
John GreenanKleinschmidt Associates
Gillian M. GregoryGEI Consultants, Inc.
Alex GrenobleHDR, Engineering, Inc.
Patrick M. GriffinBechtel National, Inc.
A. Richard GriffithAcres International Corp
Patrick J. GrodeckiGEI consultants
Edward C. GrubbsGrubbs, Garner, & Hoskyn, Inc.
Jim GrundyConsulting Engineer
James GuarenteGZA GeoEnvironmental, Inc.
Lawrence W. GubbeProject Engineering & Mgmt.
Dwarka P. GuptaConsulting Engineer
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H
Craig HallGEI Consultants
Richard B. HallState Division of Water Rights
William G. HamanMead and Hunt
Timothy A. HampshireDLZ Corporation
Walter E. Hancock, Jr.Wiley & Wilson
Bruce HannaURS Consultants, Inc.
Kim A. HansenKleinschmidt Associates
Whitney HansenBarr Engineering Company
Tor S. Hansen, P.E.Barr Engineering Company
James C. HansonConsulting Engineer
Craig W. HarrisMWH Global
Garrett HarrisHDR
John P. HarrisonSchnabel Engineering
A. Hans Hasnay, P.EPaul C. Rizzo Assoc., Inc.
Peter HaugAyers Associates
Warren HaydenMead & Hunt, Inc.
William E. HeathConsulting Engineer
Jason HedienStantec
Thomas HeplerSchnabel Engineering
Alfred J. Hendron, Jr.Consulting Engineer
Gerry M. HeslinLandslide Technology
Amanda HessGannett Fleming, Inc.
Peter M. HeynenHeynen Engineers
Benjamin G. HildyardConsulting Engineer
Daniel M. HillBurgess & Niple, Ltd
Randall J. HillLandslide Technology
Dennis J. HoganAECOM
Reynold A. HokensonTetra Tech INCA
Rodney E. HolderbaumConsulting Engineer
William E. HolmanStanley Consultants, Inc.
Philip M. HooverH & M Engineering, Inc.
Charles H. HorstmannE.C.Jordan Co.
Richard E. HorvathConsulting Engineer
William H. HoverGZA Geoenvironmental Inc.
Boyd HowardGannett Fleming, Inc.
Robert H. HowardStrata
Terry R. HowardConsulting Engineer
Henry D. HoyleTechnical Resources, Inc.
Peter J. HradilekHDR ONE Company
Daniel HuangMcMillen
Aled HughesStantec
Christopher HuntGeosyntec Consultants
Richard J. HuntID National Eng & Environ Lab
Charles C. HuttonConsulting Engineer
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I
Robert IndriSchnabel Engineering
Vik Iso-AholaMWH
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J
Harry E. JacksonChristensen Associates, Inc.
Steven R. JacobyGrand River Dam Authority
Stephen L. JamiesonW.W. Wheeler and Assoc.
Robert B. JansenRobert B. Jansen
Christopher J. JeterLawson-Fisher Associates
Charles JohnsonSchnabel Engineering
Peter C. JohnsonO'Brien & Gere Engineers, Inc.
Daniel L. JohnsonMWH Global
R. JohnsonConsulting Engineer
Timothy W. JohnstonGannett Fleming Inc.
Scott L. JonesAECOM
Adam N. JonesHDR, Inc
Jack C. JonesMWH Global
Joel B. JustinJoel B. Justin
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K
Chris KaramGEI Consultants, Inc.
Bethany KellyBarr
George A. KelleyStructural Concepts
Kenneth N. KempKleinschmidt Associates
Marty KempsMead & Hunt
R. Jeffrey KimballL. Robert Kimball & Assoc.
Kenneth KingThree Estates Court
Jeffery T. KlauckeNortheast Engineering Assoc.
David KleinerMWH Global
R. Stevens KleinschmidtKleinschmidt Assoc.
Robert KlineGannett Fleming, Inc.
Stanley H. KlineConsulting Engineer
James KnightGannett Fleming, Inc.
Chad KnuttiGomez and Sullivan Engineers, P.C.
Clarence E. KorhonenParsons, Brinckerhoff, Quade, & Douglas
A. Sinan KoseatacNortheast Engineering Assoc.
Richard W. KramerBenham Power Group
Paul B. KrebsConsulting Engineer
Christopher KrivanecHDR
Erin KrugHDR
Geoffrey L. KrugerSchnabel Engineering
James R. KuenzliConsulting Engineer
Joseph R. KulaGeosyntec Consultants, Inc.
Bill KussmannHatch
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L
John M. LaCoutureNorthrop, Devine, and Tarbell, Inc.
Mark E. LandisSchnabel Engineering
Dennis D. LambertLambert & Assoc.
John A. LangbeinBechtel Civil, Inc.
John R. LarsonBARR Engineering Inc.
Daniel H. LauConsulting Engineer
John R. LavigneThe H.L. Turner Group
John LawrenceConsulting Engineer
Michael LedesmaGannett Fleming
Frederick H. LegashlenConsulting Engineer
Ronnie M. LemonsFreese & Nichols, Inc.
David M. LeoneGZA
Chris Y.K. LinAGS, Inc.
Lewis E. LinzellConsulting Engineer
Albert LiouIndependent Consultant
William L. LloydConsulting Engineer
Charles V. LogieDames & Moore
David W. LordGFT
Guy S. LundGannett Fleming, Inc.
Allison LundeHatch
Edwin C. Luttrell, P.E.HDR Engineering, Inc.
Frederick Lux IIIAyers Assoc.
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M
Darren MackGannett Fleming, Inc.
Scott E. MahnkenConsulting Engineer
Faiz I. MakdisiSage Engineers
Carl MannheimKleinschmidt Associates
N. Dean MarachiIndependent Consultant
B. Dan MarksMarks Enterprises
S. Gordon MarshWoodward-Clyde Consultants
Tillman MarshallAG&E - Schnabel
Ray E. MartinSchnabel Engineering Assoc.
Authur C. MartinCornforth Consultants, Inc.
Chad M. MaschingGEI Consultants
Lisa M. MartinThe H.I Turner Group, Inc
Michael A. McCaffreyWSP | Parsons Brinckerhoff
Bethann M. McCarthy, P.E.Consulting Engineer
Stephen L. McCaskieSverdrup Civil Inc.
Dan M. McGillSchnabel Engineering Assoc., Inc.
Clinton W. MehringConsulting Engineer
James K. MeisenheimerConsulting Engineer
Lelio MejiaGeosyntec Consultants
Girma MekuriaR.W. Beck & Associates, Inc.
Michael R. MeyerCornforth Consultants, Inc.
Mutaz B. MihyarGEI Consultants
Galen E. Miller, P.E.Burns & McDonnell
John F. MillerH&M Engineering Inc.
Kevin MillerGomez and Sullivan Engineers
David J. MishalaineIndependent Consultant
Keith MoenHDR Engineering, Inc.
Anello F. MonacoEBASCO Services, Inc.
James R. MoninHatch Acres
Joseph MonroeSchnabel Engineering, Inc.
David MooreHDR
Francis C. MooreRoy F. Weston, Inc.
Derek MorleyGeosyntec Consultants
Todd R. MuellerBergmann Architects, Engineers, and Planners
Robert J. MurdockConsulting Engineer
Janis MurphyFreese and Nichols
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N
David B. NashKleinschmidt Associates
A.R. NasserziayeeURS Corporation
Michael J. NewberyMWH Global
F. Barry NewmanGAI Consultants Inc
Heather NewtonGomez and Sullivan Engineers
Justin M. NiedzialekHDR
LaMont A. NigusConsulting Engineer
Cyrus NiamirMcMillen Jacobs Associates
Pete NixTetra Tech
James M. NodaConsulting Engineer
John H. NorthropNorthrop Engineering Corp.
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O
Thomas O'BrienHDR, Engineering, Inc.
Timothy OnstottD'Appolonia Engineering
Wade OsborneCornforth Consultants
John P. OsterlePaul C. Rizzo Assoc., Inc.
Daniel S. OwensWashington Infrastructure
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P
Diogenes PadopulosE.C. Jordan Co,
Nicholas PansicMWH Global
Joshua W. PaquetGFT
Matthew ParkerGannett Fleming
Jerry PascoeSlate Geotechnical Consultants
James T. PassageMWH Global
James G. PatrickJ.G. Patrick
Warren J. PaulURS Corporation
Michael S. PavoneURS Corporation
Robert T. PeacockConsulting Engineer
Foster PeltonMWH Global
Ed PerezHDR
Charles W. PerryWahler Assoc.
Myron B. PetrovskyMBP Consulting
Justin PhalenSlate Geotechnical Consultants
Charles W. PickeringGannett Fleming Water Res.
Jonathan M. PittmanSchnabel Engineering
Robert Pyke, Ph.D., P.E.Arcadis
Rick L. PoeppelmanGeosyntec Consultants
Rex C. PowellBergmann Associates
Robert D. PragerIntuition and Logic
Thomas F. PrehodaA. Rieli & Associates, LLC
Adam ProchaskaRJH Consultants
Kerri PuckettGEI Consultants
Alberto Pujol-RiusGEI Consultants
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Q
John E. QuistBarr Engineering Inc.
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R
Sri RajahHDR/DTA
Ashok K. RajpalMead & Hunt, Inc.
Hosea A. RamosAECOMM
Alan RauchStantec
William A. RettbergGEI Consultants, Inc.
Robert D. ReynoldsStone & Webster Engineering Corp.
Paul RichardsSchnabel Engineering
Gary Van RiessenConsulting Engineer
Paul C. RizzoPaul C. Rizzo Assoc., Inc.
Gerald C. RobbleeSchnabel Engineering
Tom RobertsonCranston Engineering Group, P.C.
E. George RobisonMcMillen Jacobs Associates
Kenneth V. RoddaWahler Assoc.
Kevin A. RoellGEI Consultants
Greg RollinsMWH Global
Ralph L. RollinsRollins, Brown and Gunnell, Inc.
Edwin RossillionConsulting Engineer
Seymore M. RothParsons Main
Alan W. RotheAyres, Lewis, Norris, May, Inc.
William S. RothgebBlack & Veatch
Todd Rudolph, P.E.Ayres Associates
James B. RussellRT Group, Inc.
Jim RutherfordHatch
John L. RutledgeFreese & Nichols, Inc.
Marc J. RyanSage Engineers
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S
Brian E. SaddenMWH Global
Kenneth W. SaloMorrison Maierle, Inc.
Steve A. SamuelsonSchnabel Engineering
Richard SanchezGEI Consultants
Silas SandersonSchnabel Engineering
Gurbaksh S. SangheraGubaksh S. Sanghera
Gurmukh S. SarkariaGurmukh S. Sarkaria
Stefan SchadingerWSP Parsons Brinkerhoff
Thomas K. SchaferCH2M Hill
E. Thomas ScherichThomas Scherich
Paul H. Schiller, P.E.Barr Engineering Company
Eric SchlosserHDR
Adam SchneiderAyres Associates
James R. SchneiderCH2M-Hill
Paul G. SchweigerGannett Fleming, Inc.
Rick ScottMcMillen Jacobs Associates
Asish SenguptaHydro Machine Technology, Inc.
Melissa SetzGeosyntec Consultants
Ram P. SharmaWashington Infrastructure, Inc.
Paul F. ShiersWSP | Parsons Brinckerhoff
 Kevin SiedleckiLawson-Fisher Associates
Antonio SisonR.W. Beck & Associates, Inc.
Edwin S. SmithMorrison-Knudsen Engineers
William B. SmithHISINC, L.L.C.
Steven H. Snider 
Nate SnortelandHDR
Robert E. SnowD'Appolonia Engineering
Kevin P. SnyderHDR, Engineering, Inc.
Elena SossenkinaHDR
Douglas A. SpauldingSpaulding Consultants
Stephen A. SpicerKleinschmidt Associates
Julie R. StanaszekMWH Global
Kenneth F. StandigConsulting Engineer
Dean S. SteinesAyres Associates
Ryan StephenGFT
Janis StraubergsEBASCO Services, Inc.
Andrew T. StrazConsulting Engineer
James M. StricklandConsulting Engineer
Manoshree SundaramMWH
Dan SwansonAECOM
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T
Glen R. TamkeAyres Assoc.
Glen S. TarboxMWH Global
Phoebe Percell-Dantes TaureauPercell Taureau Consulting
Matthew TaylorGZA GeoEnvironmental, Inc.
William H. TaylorMWH Global
Charles E. TealeHeynen Engineers
Jason H. ThomDOWL
Donald J. ThompsonHDR, Engineering, Inc.
James ThompsonConsulting Engineer
Robert A. ThompsonFreese & Nichols, Inc.
James M. TolleDMJM- Phillips-Reister, Inc.
Edward M. TomlinsonConsulting Engineer
Brian ToombsSchnabel Engineering
Heather TranthamAyers Associates
Brian TriEngineering Company
Peter H. TuckerConsulting Engineer
Frederic C. TuckerDewberry & Davis LLC
Richard J. TuckerRJ Associates
Jeffrey TuckerDuBois & King, Inc.
Jeffrey W. TuckerDebios & King Inc.
Eric M. TurgeonKleinschmidt Associates
Harold Turner, Jr.The H.L. Turner Group, Inc.
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U
Cecil UrlichConsulting Engineer
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V
Julio E. ValeraKnight Piesold
Eric A. Van DeurenMead & Hunt, Inc.
Gary J. Van RiessenConsulting Engineer
Christopher M. VellaKleinschmidt Associates
Stephen VeriginGEI Consultants, Inc.
B. Sharan VijayIndus Engineering
 Ed VillanoAECOM
Richard L. Voigt, Jr.Voigt Consultants, LLC
Richard L. VolpeConsulting Engineer
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W
Daniel WadeGEI Consultants
E.E. WalkerBenham-Holway Group
George B. WallaceBovay Engineering
Stephen WallingtonGFT
William H. WaltonSTS Consultants, Ltd.
Gary WantlandStantec
Paul J. WarrenConsulting Engineer
Ronald H. WatersFreese & Nichols, Inc.
Benjamin WebsterSchnabel Engineering
Jim WeldonJim Weldon and Associates, LLC
Richard A. WestmoreGEI Consultants Inc.
Tom WestoverCornforth Consultants
Patrick WhiteHDR
Stephen L. WhitesideCDM
Gillian M. WilliamsGEI Consultants, Inc.
Jennifer L. WilliamsAECOM
John J. WilliamsConsulting Engineer
L. Chris WilsonConsulting Engineer
David B. WilsonConsulting Engineer
Percy M. WimberlyGAI Consultants, Inc.
Raymond A. WingertHDR
Bogdan WiniarczykWoodward-Clyde Consultants
Duncan W. WoodGZA Geoenvironmental In.
R. Lee WootenGEI Consultants Inc.
Robert S. WrightConsulting Engineer
Jack G. WulffWahler Assoc.
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Y
M. Gene YowECI, Division of Frederic R. Harris
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Z
Paul R. ZamanBlack & Veatch Engineers
William S. ZoinoGoldberg-Zoino & Assoc., Inc.
Daryl E. ZuelkeConsulting Engineer
Frederick H. ZurmuhlenClough, Harbour & Assoc.

 

This page was last updated on August 27, 2026