National Experts

SCS professionals are active in, and leaders of industry and professional associations. We organize and participate in workshops and conferences, author and present technical papers, conduct research, and participate in national and state-level legislative and rule-making processes and regulatory policy. Our engineers, environmental consultants, and scientists work in close coordination on environmental solutions.

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Mr. Reed is the Director of our Texas region, a Vice President of SCS Engineers, and our National Expert on Landfill Design and Construction Quality Assurance. He has nearly 35 years of experience working predominantly on solid waste landfill projects. Project experience includes storm water management, erosion control, hydrogeologic/hydraulic analysis, landfill and transfer station design, landfill and transfer station permitting, geosynthetic lining and cover systems, landfill leachate control, slope stability analysis, and construction quality assurance (CQA). He is a licensed Professional Engineer in Texas and nine other states.

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    • Mr. Reed is the Director of our Texas region, a Vice President of SCS Engineers, and our National Expert on Landfill Design and Construction Quality Assurance. He has nearly 35 years of experience, working predominantly on solid waste landfill projects. He is a licensed Professional Engineer in Texas, Alabama, Florida, Louisiana, Minnesota, Mississippi, North Carolina, New Mexico, Oklahoma, and South Carolina.
      His project experience includes storm water management, liquids management, erosion control, hydrogeologic/hydraulic analysis, landfill and transfer station design, landfill and transfer station permitting, geosynthetic lining and cover systems, landfill leachate control, slope stability analysis, and construction quality assurance. He has provided design and consulting services for projects at over 100 landfill facilities in 26 states across the U.S. and in Canada.
      He is a member of the American Society of Civil Engineers and the Solid Waste Association of North America.
      Contact Jeff at 281-293-8494 or

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Ms. Ripplinger is SCS’s Director of Health & Safety and our National H&S Expert. She is a Board Certified Industrial Hygienist (CIH) and Safety Professional (CSP) with three decades of experience providing occupational and environmental health and safety services, specializing in indoor air quality, asbestos, lead, mold, radon, and environmental site assessments. She is also a licensed asbestos building inspector, asbestos project monitor, project designer and management planner, and an EPA certified lead based paint inspector/risk assessor. Her experience includes providing industrial hygiene expertise for facility health and safety audits, process safety management audits, training, environmental evaluations involving mold, indoor air quality, asbestos, lead-based paint, lead worker exposure, OSHA worker exposure, ionizing and non-ionizing radiation surveys and exposure issues, and hazardous waste drum sampling for unknowns.

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    • Ms. Ripplinger is SCS’s Director of Health & Safety and our National H&S Expert. She is a Board Certified Industrial Hygienist (CIH) and Safety Professional (CSP) with three decades of experience providing occupational and environmental health and safety services, specializing in indoor air quality, asbestos, lead, mold, radon, and environmental site assessments. She is also a licensed asbestos building inspector, asbestos project monitor, project designer and management planner, and an EPA certified lead based paint inspector/risk assessor.
      Her experience includes providing industrial hygiene expertise for facility health and safety audits, process safety management audits, training, environmental evaluations involving mold, indoor air quality, asbestos, lead-based paint, lead worker exposure, OSHA worker exposure, ionizing and non-ionizing radiation surveys and exposure issues, and hazardous waste drum sampling for unknowns.
      Her industrial hygiene and environmental consulting experience includes designing and overseeing remediation projects involving mold, asbestos, hazardous waste (metals and solvents), hazardous materials, polychlorinated biphenyls (PCBs), mercury, and other Resource Conservation and Recovery Act (RCRA) heavy metals; conducting both area and personal industrial hygiene sampling for metals, solvents, vapors, diesel exhaust constituents, mold, asbestos, and lead; conducting environmental sampling of soil, air, and water; and providing expert witness testimony.
      Ms. Ripplinger has worked with regulators at local, state, and federal levels, and has performed hundreds of comprehensive industrial hygiene shop surveys, indoor air quality assessments, ionizing radiation, non-ionizing radiation, noise exposure studies, chemical exposure assessments, and workers’ compensation and environmental investigations. She has supported many government agencies, large commercial companies (mining, construction, gaming), and residential development companies across the state of Nevada, and other states.
      You can reach Sandy at 702-481-6978 or

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Mr. Rappolt, QEP, is a Vice President and Project Director of SCS Engineers. He is a Senior Air Quality Meteorologist and SCS’s National Expert on Odor and Tracer Gas Studies. He has over 40 years of program management and technical experience in air quality compliance and pollutant dispersion and air measurement programs. He is an expert in atmospheric dispersion and transport of airborne pollutants, particularly in the area of complex terrain, including overwater/coastal meteorological regimes, as well as inter and intra building processes.

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    • Mr. Rappolt, QEP, is a Vice President and Project Director of SCS Engineers. He is a Senior Air Quality Meteorologist and SCS’s National Expert on Odor and Tracer Gas Studies. He has over 40 years of program management and technical experience in air quality compliance and pollutant dispersion and air measurement programs. He is considered an expert in atmospheric dispersion and transport of airborne pollutants, particularly in the area of complex terrain, including overwater/coastal meteorological regimes, as well as inter and intra building processes.
      Mr. Rappolt he has designed and implemented over 40 atmospheric monitoring networks and comprehensive field measurement programs involving toxic chemicals and molds, volatile and semi-volatile organic compounds, metals, odorous compounds, criteria pollutants, and other targeted compounds of interest including chemical and biological warfare agents. Many of these measurement studies required support monitoring of local meteorological parameters, including upper atmospheric data using an array of direct probe and remote sensing devices. Mr. Rappolt has served as an expert witness in the area of meteorology, atmospheric dispersion, and odor impacts on numerous legal cases, hearing boards, and programs which have regulatory significance.
      Due to the ongoing threat of terrorism with the possible use of biological, chemical, and nuclear agents, Mr. Rappolt has led the effort within SCS to apply his monitoring and dispersion expertise toward conducting programs related to homeland defense. These programs have included infiltrations studies on selected buildings using tracer science as well as studying dispersion in extreme urban environments to validate crisis management models.
      Mr. Rappolt has applied his technical knowledge of pollutant movement and formation in the atmosphere to help assess and mitigate industrial odor issues. He has developed a method to assess a specific facility’s odor footprint and how that footprint affects compliance to nuisance regulations. This method, which incorporates onsite monitoring, modeling and surveys, has been very effective in isolating cost effective mitigations to resolve odor issues. This approach has been successfully utilized at manufacturing facilities, wastewater treatment plants, landfills and composting operations.
      Mr. Rappolt has been active in participating with state and local regulators regarding the formulation of greenhouse gas (GHG) regulations. As a stakeholder representative for industry, Mr. Rappolt is a member of several early action committees for the California Air Resources Board (CARB) regarding the implementation of AB32. In this capacity, Mr. Rappolt has provided testimony before the Air Resources Board regarding the severity of impacts these regulations could have on California businesses. Mr. Rappolt also serves on the Industrial Environmental Association’s Air Quality Committee which is active in assessing compliance strategies for industries subject to AB32 based regulations.
      Contact Tom at 760-744-9611 or

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