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. Crosby has nearly two decades of professional experience in the environmental consulting field. He manages complex environmental site assessments (ESAs), subsurface investigations, and remediation and construction projects to navigate regulatory requirements and meet client objectives. His experiences includes investigating and remediating properties that have impacted soil and groundwater by a variety of constituents of concern, including total petroleum hydrocarbons, chlorinated solvents, volatile organic compounds (VOCs), pesticides, lead and other heavy metals, and PFAS.

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    • Mr. Crosby has nearly two decades of professional experience in the environmental consulting field. He manages complex environmental site assessments (ESAs), subsurface investigations, and remediation and construction projects to navigate regulatory requirements and meet client objectives. His experiences includes investigating and remediating properties that have impacted soil and groundwater by a variety of constituents of concern, including total petroleum hydrocarbons, chlorinated solvents, volatile organic compounds (VOCs), pesticides, lead and other heavy metals, and PFAS.
      He routinely prepares technical environmental documents clearly describing environmental conditions to meet regulatory agency compliance. These documents include Work Plans, property mitigation plans, soil management plans (SMPs), corrective action plans (CAPs), remedial action plans (RAPs), ESA reports, groundwater monitoring reports, health risk assessments (HRAs), and property closure reports. He has experience managing groundwater monitoring programs, drilling operations (vertical and horizontal), remediation, and construction oversight. He has implemented remedial action Work Plans that include source zone excavation, dual-phase extraction (DPE), soil vapor extraction (SVE), in-situ chemical oxidation, bio-augmentation, and air sparging techniques. He has provided construction quality assurance (CQA) at landfill facilities, routinely manages Brownfield redevelopment excavation and grading projects, and has worked to assess and remediate releases at various military bases and airports.
      Contact Chris at (858) 571-5500 or

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Sam Cooke, PE, CEM, MBA, is a Vice President and our expert on Industrial Wastewater Pretreatment. He has over three decades of professional and project management experience in engineering with a concentration in environmental and energy engineering. He is one of our National Experts in Liquids Management and works within SCS’s Liquids Management initiative to provide services to our clients nationwide.

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    • Mr. Cooke, PE, CEM, MBA, is a Vice President and our expert on Industrial Wastewater Pretreatment. He has over three decades of professional and project management experience in engineering with a concentration in environmental and energy engineering. He is one of our National Experts in Liquids Management and works within SCS’s Liquids Management initiative to provide services to our clients nationwide.
      Mr. Cooke’s background as a long-time business owner adds to his perspective of emphasis on client profitability and proactive project communications.
      Mr. Cooke is a licensed professional engineer in Wisconsin, Illinois, Indiana and Colorado. He earned a bachelor of science in chemical engineering, a master’s of business administration and is a Certified Energy Manager through the Association of Energy Engineers.
      Practice Areas
      Mr. Cooke’s primary areas of technical expertise include liquids management, building and industrial facility energy management, regulatory compliance and energy management, retro-commissioning, environmental assessments and audits, energy engineering, process/design engineering, site investigation and remediation, water and wastewater treatment, aboveground and underground storage tanks, and spill prevention, control, and countermeasures.
      Mr. Cooke has managed over 1,000 projects in 31 states with many industrial, manufacturing, government agency, and corporate clients.
      Contact Sam at 608-216-7382 or

      See Full Resume