Valerie R. Coton, P.G. is the founder and President of Solana Environmental Associates, Inc. Ms. Coton is a licensed Professional Geologist in the states of Florida, Georgia, Alabama and Tennessee. She holds a Baccalaureate of Science in Geology from Lehigh University, and a Master's degree in Environmental Engineering from the University of Florida. Ms. Coton has over 16 years experience providing environmental geology and engineering services in the areas of hazardous waste characterization and assessment, waste management and reduction, remedial system design and environmental permitting. Ms. Coton is a current member of the Florida Board of Professional Geologists, serving as Board Chair in 2002.

Gabrielle M. Enos, P.G. is a licensed Professional Geologist in the states of Florida, Georgia and North Carolina. She has been providing environmental consulting services throughout the Southeast since 1988 in the areas of site assessments, water resource evaluation, hazardous waste assessments and remediation, landfill gas assessment and mitigation, and RCRA Facility Investigations, and well design and construction. Ms. Enos served on the Florida Board of Professional Geologists from 1995 through 2004. She has served on the Executive Committee of the National Association of State Boards of Geology (ASBOG) since 2003, serving as President in 2006. Ms. Enos is actively involved with the development of the professional geologists licensing examination now utilized in Florida and 27 other states.