Erosion Sediment Control Consultants

James D. Wamble, PE, RLS has over 40 years of experience as a Professional Civil Engineer and Registered Land Surveyor. During the course of his career, Mr. Wamble has worked on land planning, land surveying, or civil engineering projects in all counties of the middle and west Tennessee regions, and several counties in east Tennessee. 

Selected Recent Projects:

• Lake Forest Estates – Approximately 5000 residential units and numerous commercial parcels.  This residential development, located in La Vergne, Rutherford County, Tennessee, is the largest subdivision in the state.  My company provided land planning, land surveying, and civil engineering services. 
• Nashboro Village – A mixed-use development on 393 acres consisting of a golf course, commercial development, and 2507 residential units (single-family, townhomes, and apartments) on 28 sites in Nashville, Davidson County, Tennessee.  My company provided land surveying, land planning, and civil engineering services on approximately half of these sites in this Master Plan.
• Morrison Estates – 1,352 mixed-use residential development and six commercial lots on 155 acres in Morrison, Warren County, Tennessee.  My company provided land planning, land surveying, and civil engineering services.
• Provincetown - 470 residential townhome units in a Traditional Neighborhood Planned Unit Development in Antioch, Davidson County, Tennessee.  My company provided land planning, land surveying, and civil engineering services.   

Services Include:

View James Wamble's Expert Witness Profile.

Landscapes West has focused on the design, installation, and maintenance of residential and small commercial landscapes since 1973. They specialize in the Design/Build of all phases of landscape construction, including a wide range of hardscape surfaces, including brick, natural and synthetic stone, interlocking and permeable pavers, and specialty concrete finishes and colors. 

Services:

Principal, Stephen George, has over 40 years of Landscape Design and Construction Defect experience. Mr. George has owned and operated Landscapes West since 1980, and is still providing design / build and maintenance services to his clients. His projects have included commercial, apartments, condominiums, and residential landscapes. 

Mr. George is a member of the California Landscape Contractors Association (CLCA), the Forensic Expert Witness Association (FEWA), the Irrigation Association (IA), the International Society of Arboriculture (ISA), the National Concrete Masonry Association (NCMA), the Interlocking Concrete Paver Institute (ICPI), and the Better Business Bureau (BBB) with an A+ rating. 

View Stephen George's Expert Witness Profile.

Shatec Engineering Consultants provides engineering consulting services in a variety of areas including highway engineering, traffic engineering, pavement engineering, geotechnical engineering, materials engineering, forensic engineering, construction support services, and other civil engineering matters. Example services include the following:

President, Shakir Shatnawi, PhD, PE, is a nationally and internationally recognized leader in the Transportation Engineering industry. He has over 30 years of practical and extensive engineering and transportation expertise covering industry and public agencies including the Federal Highway Administration (FHWA) and the California Department of Transportation (Caltrans). He taught highway and transportation engineering at California State University.

Dr. Shatnawi served as a principal investigator on multi-million dollar transportation projects. He held various positions in Caltrans including a Senior Transportation Engineer, a Supervising Transportation Engineer and a Division Chief.  Dr. Shatnawi's education and experience demonstrates a wealth of engineering knowledge stretch in highway design, traffic engineering, pavement design, geotechnical engineering, materials and construction . As a recipient of many acknowledgements from the government, Dr. Shatnawi has an impeccable reputation within the industry for his significant professional contributions. As an expert orator, he frequently shares his knowledge at major conferences around the world. 

View Dr. Shatnawi's Expert Witness Profile.

John Bornsworth is the owner and Principal of Peninsula Environmental. With over 20 years of experience in urban and community forestry management, John is a Board-Certified Master Arborist and a Registered Consulting Arborist. He holds additional qualifications in Municipal Arboriculture, Tree and Plant Appraisal, and Tree Risk Assessment. John is also a TCIA Certified Treecare Safety Professional. John’s expertise spans urban and community forestry planning and policy, tree forensics, pathology, risk management, and he frequently provides expert witness testimony. John also serves as a chairperson of the Washington State’s Urban & Community Forestry Council, where he represents commercial arboriculture.

Mechanical Solutions, Inc. (MSI) provides new equipment design, computer-aided analysis, installed equipment field testing and problem solutions. MSI staff performs these tasks for all types of Pumps, Compressors, Fans, Turbines, and Motors. For pumps and compressors, expertise includes both centrifugal and positive displacement (e.g. reciprocating or screw) configurations.  Turbine knowledge and experience include hydraulic turbine generators (“hydroturbines”) as well as aircraft gas turbine engines and land-based gas or steam turbine power generation systems. Applications include green energy, power, process, petrochemical, paper, and water resource industries.

MSI uses advanced finite element analysis (FEA), rotordynamics, 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 supercomputer. 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. 

MSI also has been project team leader in the development of advanced rocket turbopumps, as well as turbopump diagnostics, for the U.S. Air Force and NASA Marshall Space Flight Center. MSI is funded for several large projects with the U.S. Navy and Air Force involving vision-based systems that automatically evaluate and display/amplify machinery or system dynamic events.  As a result of these projects, MSI has developed its VibVue® vibration motion magnification system, which can magnify vibration 1000x in the full field-of-view of the equipment.  This system is available as a service, or for purchase.

Mechanical Solutions has a staff of approximately 30 technical professionals, many of whom are well known internationally in the area of pumps, compressors, and turbines.  For example, MSI’s Dr. Edward Bennett won the ASME Gopalakrishnan award for best pump fluids technologist, and was later awarded another ASME medal for CFD.    MSI’s Paul Boyadjis has won the Hydraulic Institute 2021 Standards Partner of the Year award. Since its founding in 1996, MSI has strived to provide best-in-class service throughout the world.

William D. Marscher has over 50 years of experience 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 received a B.S.M.E. from Cornell University in 1970, and a Master Eng. (Mech. Des.) in 1972, when he was a NASA Fellow and the lead graduate student for the original Mars Rover Design project.  In 1976, he received an M.Sc. in Engineering Physics from Rensselaer Polytechnic Institute. He is a registered and licensed Professional Engineer, State of New Jersey Lic. No. 40626.

For 25 years, Mr. Marscher has been one of the U.S. voting representatives on the ISO (International Standards Organization) TC108 committee, and has been the US Coordinator concerning, among other issues, machinery dynamics of centrifugal pumps and hydraulic turbine generators. He is past president of the Society of Tribologists & Lubrication Engineers (STLE), the primary technical society worldwide for the study and design of bearings, seals, wear, and erosion issues in machinery.  For the past 45 years he 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, Mr. Marscher 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.

Mr. Marscher has written thirteen handbook chapters for various major engineering handbooks, which have focused on turbomachinery mechanical issues, including dynamics, and bearing and seal design   In previous employ, he was a senior engineer Pratt & Whitney Aircraft Engines, and Director of Mechanical Engineering for Worthington HQ (pumps, compressors, and turbines), and for Dresser Worthington Division after their acquisition of Worthington.   Later, he was VP of Concepts NREC, from which 30 years ago he spun off Mechanical Solutions, Inc. as an independent turbomachinery technology company.  He has since become a charter Standards Partner for the Hydraulic Institute (HI), the trade association for the pump industry, became Vice Chair of the vibration technical committee for HI, and was HI Standards Partner of the Year for 2018.   He also won the 2019 Vibration Institute MFPT Frarey Award for Diagnostics Excellence.

View MSI's Expert Witness Profile.

• Structures, Buildings, Houses, Dwellings
• Foundations, Footings, Elevators, Retaining Walls, Dams
• Development Plan & Plats for Sites, Properties, and Residences
• Underground & Subsurface Chamber / Chambers
• Scaffold, Scaffolds, Scaffolding
• Site Plans & Subdivisions: Industrial, Commercial, Residential
• Roads, Roadways, Ramps, Walks, & Man Hole Cover / Covers
• Sidewalks, Walkways, Paths & Pathways
• Lighting: Lamps, Lights, Lamp Poles, Light Levels
• Luminaries & Illumination (Specifications)
• Rock Cuts & Blasting (Topography, Specification)
• Soil Slopes / Samples / Mechanics / Geotechnical Engineers
• Sanitary Facilities, Septic Systems (Board of Health Septics Approval)
• BOHA / DEP Approvals
• Water, Drains, Drainage, Sewer & Sewage Lines & Mains
• Culvert / Culverts, Manholes (Man Holes) & Catchbasins / Catch Basins
• Inspection, Supervision, and Certification of Construction
• House Inspector & Inspections
• Road, Roadway, Walk & Sidewalk Premises Liability (e.g., Steep Slope)
• Walkway, Path, Ramp & Pathway Premise Liability (e.g., Steep Grade)
• Coefficient of Friction / Slip & Fall (Snowy & Icy Conditions)
• Vertical Discontinuity / Discontinuities / Trip & Falls
• Small Ports / Port, Marinas / Marina, Marine Dredging
• Levees, Jetties, Dolphins, Piers, Sea & Flood Walls
• Wharves, Breakwaters, Bulkheads, Weirs, & Revetments
• Groins, Dikes and Waterfront Structures
• Drainage Basin Analysis, Rainfall, Floods & Flood Plain / Plains
• Flooding Controls & Control Devices
• Storm Water Runoff (10, 25, 50 & 100 Year Storms)
• Pressure & Pressures: Wind, Wave / Waves, Ice, Snow
• Rain Fall Run Off & Storm Water Pollution Treatment
• Excavation, Grading, Fills & Filling Operations (Swales, Berms, Silt Fence)
• Erosion Control, Sediment Barriers, Sedimentation / Catch Basins (Hay Bales)
• Pumps and Pump System Line & Main
• Slope, Dam, Levee, Jetty, Dolphin, Pier, Wharf & Breakwater Collapse
• Bulkhead, Weir, Revetment, Groin, Dike, Footing & Foundation Failures
• Failure of Fire Containment Wall, Elevator or Water Front Structure
• Tenement House Façade Collapses
• Code History of Existing Multiple / Multi-Family Dwelling / Building
• Application of Municipal Building, Fire & Property Maintenance Codes
• City, Town & Village Zoning, Planning, Steep Slopes & Grades, Wetland & Wetlands Ordinances
• Testimony at Board Meetings as a Design Forensics Engineer