Hydraulics Expert Witnesses: 6

Mark E. Rieser, II, MS, PE, AIA, GBC, GEC has over 30 years of experience in the Engineering, Architectural, Construction, and Building Design industry. He provides his clients with a comprehensive knowledge of Engineering, Construction Technology and Construction Standards of Professional Practice. 

Background Experience - President of an “active” Design and Building company with a professional staff and Headquarter offices in San Jose and Los Angeles, and offices in Sacramento and San Francisco. Mr. Rieser has managed, designed, and constructed over 4,000 units to include high-rise, single family homes, condominiums, townhomes, podiums, apartments, and commercial buildings, His experience includes building and roadway design, construction, management, with designs of over 500 miles of asphalt and roadway improvements, tunnels, San Francisco Airport, Santa Clara Light Rail, Southern Pacific Railroad, Caltrans, and BART. 

Mr. Rieser has an insightful understanding of Civil / Structural Engineering, Soil Engineering, Transportation, Traffic Engineering, Hydraulic Engineering, Safety Expert, OSHA Standards, Architectural Design, Asphalt Design, Cost Estimation, Public Works Design Bidding and Estimation, General Engineering, General Building, and an Accident Reconstruction expert. “Our bids are not just a tool but are numbers that we be use to finish the work, accurately, on-time, and safely.” 

Forensic Construction and Engineering - Mark Rieser is a renowned forensic expert with the knowledge to safeguard clients from unwanted litigation as well as support both plaintiffs and defendants. He works closely with insurance companies and attorneys on various public, city, and state cases throughout the western United States. To date, he has been designated as an expert in over 550 Forensic Construction and Engineering cases throughout the United States. Mr. Rieser has been designated and testified Court as an expert in the following categories:

View Mark Rieser's Consulting Profile.

Harold E. McGowen, III, PE, is a proven authority in Oil and Gas exploration and development. As an engineer and businessman with 40+ years of experience building and leading oil and gas companies, he provides technical acumen, clear communication, and industry knowledge in cases involving trade secrets, patents, securities, operational failures, and safety. 

Expertise in Trade Secrets and Patents

• Harold has testified in numerous intellectual property disputes involving downhole tools, hydraulic fracturing, and drilling technologies.
• His ability to evaluate technical designs and assess claims of patent infringement or trade secret misappropriation is grounded in decades of hands-on industry experience and as an expert on numerous patent cases.
• He links technical insights to business and legal outcomes, delivering fact-based conclusions that resonate with courts and juries.

Securities Litigation Proficiency

• Harold’s expertise includes evaluating whether companies accurately represented reserves, operational performance, and development strategies to investors.
• His testimony has been instrumental where overstated reserves or misleading economic projections were alleged, focusing on adherence to reasonable claims and industry best practices.

Broad Litigation Experience

• Harold has provided expert testimony and litigation support in over 40 cases, addressing issues such as operational failures, safety lapses, and intellectual property disputes.
• He consistently ties technical findings to best practices and organizational responsibilities, ensuring clarity and relevance for legal audiences.

Leadership and Innovation

• As CEO of oil and gas operating companies, Harold led multimillion-dollar projects, optimizing drilling and completion strategies and ensuring compliance with industry standards.
• He has authored technical papers and presented on topics including hydraulic fracturing, drilling optimization, and project management.

Harold’s unique combination of technical expertise, hands-on experience, and litigation support experience ensures clear communication with attorneys, judges, and juries. For trade secrets, patents, securities disputes, or operational safety cases, Harold E. McGowen III, PE, delivers clarity, credibility, and results.

View Harold McGowen's Business Consulting Profile.

Mechanical Solutions, Inc. (MSI) performs litigation support through its extensive engineering capabilities, and when required, through expert testimony. MSI uses advanced finite element analysis (FEA), rotor dynamics, and torsional analysis tools, and uses computational fluid dynamics (CFD) to analyze 3-D steady or unsteady fluid flows and heat transfer, enabled by its 230 high speed processor supercomputers.

MSI also uses top-of-the-line testing equipment, including multichannel FFT analyzers (up to 200 simultaneous channels) to accurately read the outputs of various vibration, stress/strain, and pressure sensors, as a function of both time and frequency. As a unique additional test capability, MSI uses motion magnification video cameras to amplify and display scene vibration by 1000x. MSI uses calibrated exciters while equipment remains running, to locate structural, rotor, and acoustic natural frequency resonances as they exist at any particular operating point, without interfering with machinery operation. In addition, MSI performs stress, acoustic, dynamic pressure pulsation, electric current spectrum, and aero/hydraulic performance testing.

Areas of Expertise:

Solving Challenges with Rotating Machinery Vibrations

William D. Marscher, PE, performs expert witnessing and engineering work in the field of Fluid Systems and their Rotating and Reciprocating Machinery, particularly large turbines, generators, compressors, and pumps. His typical work responsibilities include design, analysis, and testing of all types of plant machinery, as well as other types of fluid and mechanical systems. Mr. Marscher has background in various types of turbines (including hydraulic, steam, and gas), as well as various types of pumps, including centrifugal as well as positive displacement (e.g. reciprocating, gear, rotary, and screw).

Mr. Marscher's expert witnessing experience includes 27 cases over the course of his 50+ year career, for which he provided detailed engineering reports in support of the case. This legal support experience includes witnessing in front of tribunals four times, and testifying in Federal Court in four cases. He also has performed depositions 11 times. 

For the past 45 years, Mr. Marscher has been a voting member of the ASTM Fatigue Standards Committee E9, as well as the ASTM Wear & Erosion Standards Committee G2. He is also the past Board of Directors Chairman for the Machinery Failure Prevention Technology Society (MFPT), and has been active in the Vibration Institute. Mr. Marscher is a 23-year member of the Texas A&M Turbine-Pump Users Symposium Advisory Committee (essentially the Board of Directors for the Symposium). For ASME, he was Chair of the Predictive Maintenance committee and was Organizing and Presiding Chair of the 1993 RoCon Rotating Machinery Conference and the 1995 Tribology Conference.

Dr. Edward Bennett is MSI’s VP of Fluids Engineering.  Dr. Bennett graduated from the Naval Academy, following which he was a navy test pilot.  Later he received his PhD in Fluid Dynamics from Johns Hopkins University. Dr. Bennett has been a well-known leader in Fluid Dynamics and the Aero/hydrodynamic Design of Turbomachinery for the past thirty plus years.  

In 1995, Dr. Bennett founded ASC Turbo, a design house that combined the CFD software from Advanced Scientific Computing and specialized turbomachinery design software.  During this time, he worked on the development of BladeGen, a 3-dimensional turbomachinery blade geometry kernel, and also performed a key role design work that included the starter turbine and vapor cycle compressor for the F-22 Raptor fighter, several biomechanical cardiac pumps, a LOX rocket turbopump, as well as numerous more “conventional” turbomachinery designs. After this, he served as Director of Turbopumps for Gencorp Aerojet, and authored the hydraulic design methodology that is still in use by that organization.

At MSI, Dr. Bennett oversees fluid dynamic design and analysis of pumps, compressors, and turbines, including various sizes of hydroturbine generators.  This work includes detailed computational fluid dynamic (CFD) analysis, as well as test rig design, and flow loop/ wind tunnel validation testing.  Recently, he has supported major law firms with expert report writing and detailed two-phase flow unsteady CFD analysis of 100MW and 400 MW hydroturbines in the US and Canada.

Paul A. Boyadjis is Director of Rotating Machinery Analysis for MSI.  Mr. Boyadjis has a BS and MS in Mechanical Engineering from Lehigh University where he graduated summa cum laude.  He has over 35 years of diverse experience in the analysis and Design of Centrifugal Pumps and Pumping Systems, as well as Centrifugal Compressors. His specialty includes complex 3D solids modeling for stress and vibration analysis using advanced finite element techniques, and he has worked as a lead analytical engineer for major manufacturers. 

Mr. Boyadjis is also an expert at rotordynamics, and field testing. He has enjoyed participating as a Hydraulic Institute Standards Partner for over a decade, and became vice chair of its Vibration Committee, and was named Standards Partner of the Year in 2021.  Paul played a key role in various standards. 

Years ago, Mr. Mr. Boyadjis developed the solids modeling and advanced finite element analysis capabilities at the Government Marine Business unit of Ingersoll-Rand, and wrote many of the structural and vibration analysis procedures for that division. As mergers took place, he then transferred these analytical capabilities to the Research and Development group of Ingersoll-Dresser Pump and later Flowserve.

While with MSI, Mr. Boyadjis has conducted detailed 3D finite element analysis of failed casings and impellers, performing forensic investigations, and when necessary, providing successful design enhancements for industrial and municipal customers. He has directed or participated in many testing and troubleshooting projects, particularly for water and wastewater pumping systems.

View MSI's Consulting Profile.

Thomas J. Young, PE, has over 39 years of experience in national and international Transportation Construction, the Civil Engineering specialty regarding highways, bridges, rail, airports, harbors, and associated infrastructure.

Mr. Young is a skilled integrator of the parameters of program and project life cycles, leadership, management, business operations, engineering and construction. He has extensive knowledge of regulatory compliance, environmental processes, industry standards, best practices, and field operations in urban and remote areas.

Mr. Young has broad construction management and design background for many of the knowledge and skill areas required in mining operations, bridges, highways, land development, major soil/structure type facilities, land survey, and construction surveying, including work in Arctic facilities and in desert regions.

Selected Background Experience:

• Completed 34 bridge structure designs, seismic retrofits, and special studies, including large cut and cover tunnels and numerous other complex structures for the $700 million design/build Eastern Transportation Corridor toll roads in Orange County, California
• Bridge construction oversight on $1 billion Cypress Corridor reconstruction in Oakland, California. 
• $10 million Sunrise/Highway 50, and $40-$50 million Douglas/Interstate 80 Interchange and Corridor designs in Sacramento, California.
• Bridge and highway project development duties in Caltrans Districts 1-5, 7, 10-12.

Thomas J. Young: PowerTeam Interview

Litigation Support - Mr. Young can act as an expert witness in all cases related to Forensic Transportation Construction Engineering. A persuasive communicator skilled at negotiating successful outcomes to complex situations, his expertise at analysis, problem solving, and bringing parties together in the public and private sectors is an asset in his performance in forensic engineering and expert witness testimony.

Areas of Expertise:

View Civ-Tek International's Business Consulting Profile.

David Smith is an experienced mechanical engineer (MS, PE) with seven issued patents. Award-winning inventor. Vice President of Alpine Engineering and Design, a mechanical engineering consulting company with clients around the United States ranging from individual inventors to Fortune 500 companies. Worked on the development of multiple successful products including among other things: aerial lifts, garbage trucks, thrill rides, ziplines, trailers, oil and gas equipment, exercise equipment, manufacturing equipment, and multiple consumer products. 

Graduated Cum Laude with a bachelor's degree in mechanical engineering. Completed a master's of science degree in mechanical engineering and an MBA with an emphasis in product development. Licensed professional engineer (PE) and certified safety professional in comprehensive practice (CSP). Certified trainer for boom lifts, scissor lifts, rough terrain, and counterbalanced forklifts. Over 10 years of experience in product development, patents, equipment safety, and risk assessments. 

Experienced expert witness having drafted over 200 reports/declarations in patent cases and catastrophic injury and death cases. Designed and built multiple custom testing devices to obtain data and evaluate opinions. Created multiple demonstratives to explain the mechanics and circumstances of accident sequences and patented devices. Testified in deposition 11 times and in trial once.

Cameron Orr is a Mechanical Engineer (PE), a Safety Professional (CSP), a Hydraulics Specialist (CFPHS), and a Certified Forklift Operator and operator trainer. He has worked as a mechanical engineering consultant for over 17 years. He designs and analyzes new products and equipment.

Expertise:  Expert witness on product liability, personal injury, wrongful death, and intellectual property cases.  He specializes in machinery (saws, presses, etc.) and heavy equipment (forklifts, cranes, etc.).