Mr. Crosby has ten years of professional experience as a scientist in the environmental consulting field. He successfully manages complex environmental site assessments, subsurface investigations, and remediation projects to navigate regulatory requirements and meet client objectives. He has experience investigating and remediating properties that have soil and groundwater impacted by a variety of constituents of concern including petroleum hydrocarbons, chlorinated solvents, volatile organic compounds, pesticides, lead, and other heavy metals. He routinely prepares technical environmental documents that clearly describe environmental conditions and meet regulatory agency compliance including workplans, property mitigation plans, soil management plans, corrective action plans, remedial action plans, site assessment reports, groundwater monitoring reports, health risk assessments, and property closure reports. He has experience managing groundwater monitoring programs, drilling operations, soil vapor surveys, remediation, and construction oversight. He has implemented remedial action work plans that include source zone excavation, dual phase extraction, soil vapor extraction, in-situ chemical oxidation, bio-augmentation, and air sparging techniques. He has provided construction quality assurance at landfill facilities and oversight of brownfield redevelopment excavation and grading projects.