Septic / Sewer / Sewage Systems Expert Witnesses: 8

Professor Christopher J. Tennant, PhD, CIH, has over 40 years of experience in the field of Environmental Health and Industrial Hygiene. He is Board Certified in the Comprehensive Practice of Industrial Hygiene. Dr. Tennant is currently President, CEO, and Principal Consultant at San Joaquin Environmental, in Fresno California, where he consults with Federal, State, County, City, various public agencies, and private industry sectors from public housing to Aerospace. His services are available in all 50 US States and the United Kingdom.

Dr. Tennant also serves as Professor Emeritus for the Department of Public Health at Fresno State University where he's taught Environment Health, Industrial Hygiene, and Occupational Health and Safety for 35 years at both undergraduate and post graduate levels.

Litigation Support - Dr. Tennant has been retained by numerous insurances companies and law firms on various Industrial Hygiene matters throughout the US, including workers compensation, property damage, personal injury, and wrongful death. He has testified as an expert witness in Federal Court, Superior Court, and Workers Compensation Appeals Board over 100 times. He's been deposed many more times. 

Areas of Expertise:

Mold Asbestos Lead-based Paint Bad Faith Environmental Contamination Hazardous Materials Clandestine Drug Lab Remediation Industrial Hygiene

Chemical, Biologic, and Physical Hazard Exposure Landlord / Tenant Disputes over Habitability / Sanitary Standards OSHA, HSE, and EU Compliance Wrongful Death Lead and other Heavy Metal Poisoning Indoor Air Quality and Human Health Hearing Conservation and Noise Ordinance Solvent Exposures

Mayotte Design & Engineering, PC (MD&E) is a Civil and Environmental Engineering Design Firm based in East Lansing, Michigan.  Since 2003, MD&E has proved itself a highly responsive design, advocate and risk management partner for clients in the energy, automotive, commercial printing, textile, pharmaceutical, chemical, real estate, and legal industries.  MD&E offers a variety of services, specializing in the design and engineering of treatment solutions for wastewater, groundwater, stormwater and contaminated soil, sediment, and air.

MD&E personnel assist clientele across the US and have completed projects in: Alabama; Arizona; California; Colorado; Connecticut; Illinois; Indiana; Iowa; Kansas, Massachusetts; Michigan; Missouri, Mississippi; Nevada; New Jersey; New York; Ohio; Oregon; Tennessee; Texas; Vermont; Virginia; West Virginia; Washington, Wisconsin; Wyoming; British Columbia; Ontario; Quebec; Brazil; China; Czech Republic; Italy; and Mexico.

Timothy J. Mayotte, PhD, CPG, PE, President at MD&E, is an Environmental Engineer with over 35 years of experience in his field. He has provided litigation support and served as an expert witness on over a dozen cases dating back to the mid-1980s. Dr. Mayotte's experience includes providing testimony during numerous depositions and in open court. He has offered expertise in the following areas:

• Hydrodynamics of natural and engineered systems.
• Contaminant fate and transport in the environment.
• Biological and physicochemical process design for the treatment/remediation of water, wastewater, soil, and sludge.
• Industrial wastewater treatment.
• Management and inspection of commercial and residential construction and demolition projects, including due diligence services for property transactions.

Jose Villalobos, PE, is a licensed Civil and Corrosion Engineer with over 48 years of experience in the design and condition assessment of corrosion protection systems for municipal infrastructure including Water and Wastewater Conveyance, Treatment, and Storage.

Mr. Villalobos and his team at JLV Wolf Inc. are based in San Leandro, California and specialize in assisting owners and engineering firms when it comes to forensic investigations. With their help, clients can collect all the needed information to properly assess structural integrity or causes of the structural failure. The firm offers services throughout the US.

Litigation Support - Mr. Villalobos provides professional assistance to owners, design engineers, and attorneys in evaluating operational issues at water and wastewater plants that may require forensic investigations. He is retained for cases involving the deterioration of Concrete and Corrosion of Metals in Water and Wastewater Facilities including atmospheric, immersed, and buried exposures at:

Dams Storage Reservoirs Above Ground Tanks Elevated Tanks Treatment Plants

Digesters Pump Stations Pipelines Transmission Mains Underground Vaults

Relevant Project Experience (Partial List):

• A.C. Transit, Oakland, Bus Maintenance Facility Buries Hydraulic Fluid Line Investigation
• Thompson vs. Standard Oil
• Landels Ripley Diamond Union Oil Tank Investigation
• Field, Richardson et al – Contra Costa Water District PG&E Claims Seaport Center Stainless Steel Pipe Support Cable Failure and Corrosion of Concrete Piles
• Bay View Condominiums Copper Recirculation Hot Water Systems San Luis Water District Cement Mortar Coated Pipe Failure
• Sea Colony Residential Housing Subdivision Reinforced Concrete Slab  Foundation Failure

For over 45 years, Chuck Dutill, P.E., D.F.E. has been performing Hydrology and Environmental Engineering nationwide. He has focused on wastewater, stormwater, flooding, sewers, septic systems, groundwater, drainage, runoff, hydrology, hydraulics, backups, drinking water, and air quality. 

Litigation Support - Mr. Dutill has spent approximately 30% of his professional time providing expert witness services for over 45 years. Approximately 40 to 45% of his expert witness services have been for defendants and about 55 to 60% for plaintiffs. He has issued 200 to 205 expert reports, been deposed approximately 45 to 50 times, and testified in federal and state court (including jury and non-jury trials) approximately 40 to 45 times. 

Forensic cases have occurred in approximately 40 states. As indicated in feedback from attorneys on expert witness cases, some of his strengths include understandable guidance, responsiveness, timeliness, communication, effective report writing, strong testimony (including on cross), efficiency, organization, and assistance with framing case issues. 

Expertise:

Hydrology Sewer Water Flooding  Groundwater  Hydrogeology  Drainage  Wastewater Treatment Septic Systems Utility Sewer Systems  Sanitary Sewage  Mold  Stormwater Management  Hydraulics  Hazardous Waste  Drinking Water Waste Management

Erosion Soils  Pumping  Water Quality  Air Quality  Wells  Runoff Backups  Water Mains Storm Sewers  Detention  Contamination  Spills  Pollution  Sinkholes  Sedimentation  Wetlands  Infiltration/Inflow  Dams  Floodplains

Toxicity  Remediation  Grading  Health and Safety Modeling  Odors  Combined Sewers  Overflows  Aquifers  Water Distribution Water Treatment Hydraulic Fracturing  Hydroplaning  Monitoring  Metering Maintenance  Design Construction  Inspections

CV Available Upon Request View Mr. Dutill's Consulting Profile.

Roger W. Griffith, P.E. has over 37 years of experience as a registered professional Mechanical Engineer in the design, maintenance, and operation of mechanical systems (Plumbing, HVAC, and Fire Sprinkler Systems). As the principal of Griffith Engineering & Consulting for 23 years, his design experience with commercial and industrial projects includes convention centers, schools, office buildings, condominiums, apartment buildings, hotels, churches, manufacturing facilities, medical buildings, restaurants, historic buildings, dormitories, fire halls, and maintenance facilities.

Litigation Support - Since 2002, Mr. Griffith has been providing forensic engineering, consulting, and expert witness services that are thorough, credible, and timely. He also assists clients through the mediation and arbitration process. His expert testimony is based upon independent and impartial investigation, research, analysis, and testing. His services include written reports and the preparation of exhibits. Mr. Griffith's expertise is available to plaintiffs and defendants on the issues of plumbing, mechanical, and fire sprinkler system defects and failures. 

His specific areas of expertise include hot water scalding, carbon monoxide poisoning, and legionella. Mr. Griffith has served on numerous codes and standards committees related to areas, including the NFPA 54 Fuel Gas Code, the ASSE Scalding Awareness Task Group, the Uniform Codes' Legionella Task Groups, and the ICC Plumbing/Mechanical/Fuel Gas Code Action Committee. 

He is a Registered Professional Engineer in Alabama, Arizona, Arkansas, Colorado, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Maryland, Minnesota, Mississippi, Missouri, New York, North Carolina, Ohio, Oklahoma, South Carolina, Tennessee, Texas, Utah, and Virginia.

Areas of Expertise:

HVAC Design Plumbing Design Pipe Failures Plumbing Component Failures Sprinkler System Failures

Hot Water Systems / Scalding  Water Heater Failures Gas Venting / Carbon Monoxide Poisoning Fuel Gas Fires and Explosions Legionella

View Roger W. Griffith's Consulting Profile.

Robert F. Jalnos is currently a Managing Partner, CEO, and Responsible Master Plumber (RMP, 45 Years) for Dr J Plumbing Contractors, LLC. He has over 45 years of experience as a Licensed Master Plumber in the State of Texas. Mr. Jalnos also currently holds a Master Medical Gas Endorsement, and a Master Multipurpose Fire Sprinkler Endorsement with the Texas State Board of Plumbing Examiners. He is licensed and certified with the Texas Railroad Commission on the installation of LPG Gas Systems.

Qualifications:

• The installations of PEX, PROPRESS, Copper, Steel, Duriron, CPVC Piping. PVC and Cast Iron DWV below and above the foundation, Plumbing site preparation, Sewer, Septic Tanks, Potable Water, Natural and LPG Gas, Medical Gas, Multi-Purposed Fire Sprinkler systems and CSST systems. 
• All types of plumbing installations including Rough In, Slab Water Pulls, Top Outs, Fixture Setting, Sewer installation, Water Service installation, Underground and Above Ground Gas lines, Plumbing Service and Repair, as well as operating machinery for plumbing installations
• Expert Forensic Analysis of system failures
• U.S. Patent Laws pertaining to Plumbing Products
• Uniform and International Plumbing Codes 
• Certified Bathroom Designer (CBD) certified by the National Kitchen and Bath Association
• Certified Green Plumber

Litigation Support - Mr. Jalnos has provided expert plumbing analysis and forensic investigations for the past 20 years. His cases include all aspects of plumbing, materials, installation, workmanship, and problem solving. Mr. Jalnos has been retained in over 75 cases and offers services to attorneys for plaintiff and defendant.

Bonneau Dickson, P.E. is a sanitary engineer with forty years of experience in all aspects of potable water, wastewater and stormwater design and construction management.  He has provided forensic sanitary engineering expertise and served as an expert witness for 25 years.  He has been deposed approximately 100 times and has testified in trials, arbitrations or mediations more than a dozen times.  He has worked both in the U.S, and abroad.

Mr. Dickson has designed approximately 300 water, wastewater, and stormwater projects. Has been resident engineer or otherwise participated in the construction phase of approximately 20 water and wastewater projects. Mr. Dickson has both project management and general management experience as project manager on approximately 175 projects. Mr. Dickson served as forensic technical consultant or expert witness on more than 100 cases. With his decades of experience, he understands not only the engineering aspects, but also the financial, managerial, political, and personal aspects of legal issues. Mr. Dickson's expert services include succinct reports with explanations of complex engineering matters in layman’s language. 

Areas of Expertise:

Sewage Overflows Wastewater Facilities Design Wastewater Facilities Planning Septic Systems Water Facilities Design

Water Facilities Planning Standard of Care Stormwater Facilities Design Stormwater Facilities Planning PCE Contamination

Education - BS Civil Engineering, GA Tech; MS Sanitary Engineering, GA Tech; MA Sanitary Engineering, Harvard University; Master Of Business Administration, Harvard University View Bonneau Dickson's Consulting Profile.

Geoffrey Beresford Hartwell is a Chartered Engineer who practices as an Arbitrator, Adjudicator and Expert for Determination. Geoffrey is the former Senior Partner of Consulting Mechanical and Electrical Engineers BHA Cromwell House.

A one time Chairman of the Expert Witness Society, Geoffrey Hartwell has experience giving evidence in court (in both civil and criminal matters) and in International Arbitration. He sometimes is retained as a Single Joint Expert or as a Tribunal Expert. His services are offered to both Plaintiff and Defense. Even when retained on behalf of a Client he, like all Experts, has an overriding responsibility to the Court or Tribunal.

After his early career in aerospace and nuclear energy, Geoffrey entered private practice in association with the late Leslie Heap and Gerald Lewis of Heap and Digby, Consulting Engineers, in 1969. While with them he designed water and sewage equipment and also the bascule moving machinery for the Lowestoft Bridge, in Suffolk. He practiced also as Beresford Hartwell and Associates and, in 1971 established a separate office in Wallington, South London.

In parallel with his design career, Geoffrey was first appointed as arbitrator in 1972 and his first foreign arbitration, an ICC appointment in Switzerland, took place later that year. He studied Law to Intermediate level and then transferred to the examinations of the Institute of Arbitrators (now Chartered) of which he became Chairman in 1996-1997 and for whom he taught in various countries on several courses, including the prestigious Diploma in International Commercial Arbitration.

Technical Expertise:

Electrical Engineering and Design Mechanical Engineering and Design Instrumentation Automation and Computer Control Systems Maritime and Infrastructure Engineering Process Engineering Solid Waste Handling

Communications Manufacturing Computer Cartography Moving Bridges and Lock Gates Construction Project Management Nuclear Energy Water and Waste Water Treatment

Arbitration: Geoffrey Hartwell also acts as an arbitrator and adjudicator, as an expert mediator and conciliator, as an expert investigator and assessor for arbitral tribunals, and also as a Special Referee in the High Court of Justice of the Isle of Man. His services have been required in the UK and internationally.

Dispute Boards: Geoffrey Hartwell has experience both as Member and as Chairman of Dispute Boards?. He has been a member of Dispute Boards, retained from the beginning of a project or, alternatively, appointed on an ad hoc basis when a problem arises, Dispute Adjudication Boards to determine a binding decision, and on Dispute Review Boards to make decisions that are advisory but not binding.

Adjudication: Similar to arbitration, Mr. Hartwell adjudicates domestic and international disputes which are only temporarily binding unless otherwise agreed upon by the parties.

View Geoffrey Beresford Hartwell's Consulting Profile.