Scott W. Horsley, LEED AP, President
Scott Horsley has 25 years of professional experience in the fields of watershed planning and water resources management. He has worked as a consultant to federal, state, and local jurisdictions, and private industry throughout the United States, Central America, the Caribbean, the Pacific Islands, and China. Scott has been an innovator in the environmental profession, and thrives on bringing new and fresh approaches to challenging projects. Scott has a strong understanding of the full range of technical, planning, and policy issues associated with land use and environmental science. Scott has served as an instructor for a nationwide series of U.S. Environmental Protection Agency (EPA) workshops on groundwater protection and coastal resources management. He has also served on numerous advisory boards to the EPA, the National Academy of Public Administration, Massachusetts Department of Environmental Protection (DEP), Massachusetts Executive Office of Energy and Environmental Affairs (EEA), National Groundwater Association, and Massachusetts Audubon Society. He has taught numerous seminars in water resource protection, and is an Adjunct Professor at Tufts University where he teaches courses in water resources policy and low impact development (LID).
Curriculum Vitae | P: (508) 833.6600 x 127 |
shorsley@horsleywitten.com
Mark Nelson, P.G., L.S.P, Principal and Senior Hydrogeologist
Mark Nelson is a Principal and Senior Hydrogeologist with HW, responsible for the firm’s Water Resource, Wastewater Planning, and Site Assessment and Remediation projects. Mark has 25 years of experience in groundwater modeling, surface water modeling, hydrogeologic investigations, and fate and transport analysis of contaminants in soil, sediments, and groundwater. Mark has direct experience in the regulatory and permitting requirements associated with wastewater projects, and has been successful in securing numerous Groundwater Discharge Permits with the Massachusetts Department of Environmental Protection (DEP). He currently serves as the Program Manager for HW’s $17 million contract with U.S. Environmental Protection Agency (EPA) Office of Ground Water and Drinking Water, providing technical advice on source water protection, water security and the Underground Injection Control Program. Mark is a Licensed Site Professional (LSP), authorized by the Commonwealth of Massachusetts to direct the assessment and remediation of contaminated sites. Mark has also been an instructor for the EPA teaching workshops on wastewater planning, water security, ground water and surface water hydrology, Low Impact Design (LID) contaminant transport, estuarine and ground water modeling and wellhead and source water protection.
Curriculum Vitae | P: (508) 833-6600 x 128 |
mnelson@horsleywitten.com
Richard A. Claytor, Jr., P.E., LEED AP, Principal Engineer
Rich Claytor has more than 25 years of practical experience in civil and water resource engineering planning and design, construction administration, and watershed research, education, and training. Rich has extensive experience and expertise in stormwater management design, program assessment, policy, and evaluation. Rich also is experienced in watershed planning, training and education; water resource permitting and research; water supply and wastewater conveyance design; land use planning, site design and research; storm drainage, erosion/sediment control, and roadway design; and construction administration. He has authored a variety of publications on stormwater design and implementation, and presented in more than one hundred training workshops and conferences. He was the principal designer of stormwater management and stream restoration measures more than one hundred projects.
Curriculum Vitae | P: (508) 833-6600 x 107 |
rclaytor@horsleywitten.com
Joseph Longo, Senior Engineer and Associate Principal
Joe Longo has 13 years of professional experience focused on hazardous waste site assessment and remediation as well as civil site design development projects for public and private clients. Joe’s permitting, design, and construction administration experience ranges from oil and hazardous materials assessment and remediation, to water supply and wastewater treatment plants, civil / site design, as well as permitting at the town, state (MEPA), and federal (NEPA) levels. Joe has directed small to large scale project teams internal to HW and those involving subconsultants including architects, MEP’s, land surveyors, commissioning agents, wetland and rare species scientists, among others; as well as coordinating and directing projects through public and private bidding, bid evaluation, contractor selection, and construction administration.
Curriculum Vitae | P:(508) 833-6600 x 125 |
jlongo@horsleywitten.com
