• (860) 243-1757
  • mcasslar@geoquestinc.com
  • Bloomfield, Connecticut

Moving Forward Together

Mark Gottlieb, Andrew Schott, Peter Prey, and Sarah McKenzie of Catalyst Environmental Consulting have joined the GeoQuest, Inc. Family

As a small firm, we pride ourselves on bringing personalized service to our clients. We are committed to working closely with you to understand and meet your individual needs, and arrive at a practical and cost effective solution to your environmental problems. We make it possible for businesses to concentrate on doing business, while we deal with any environmental problems you may encounter. Our staff is experienced in developing and implementing solutions to a wide range of environmental problems including soil and groundwater contamination, hazardous material and waste management (including industrial chemicals and PCBs), underground storage tank issues, petroleum discharges, RCRA facility closure, and regulatory compliance issues. Projects completed cover a variety of situations including (but not limited to) property transfers; corporate mergers and acquisitions; regulatory compliance; Brownfield development; Connecticut Property Transfer Act; litigation and arbitration; industrial, commercial, retail, and residential developments.

Our Team

Marc I. Casslar, LEP


Mr. Casslar is a Connecticut Licensed Environmental Professional and registered professional geologist with over 45 years of experience in consulting, industry, and academia. He has developed site contamination evaluation programs, assessed environmental liability of industrial manufacturing facilities, developed underground and above-ground storage tank management programs, evaluated the potential for contaminant migration from industrial sites, and provided expert testimony for a variety of environmental litigation and arbitration actions. In addition, he was a member of the ASTM Phase I Site Assessment Committee, has served on an ad- hoc committee for the development of a regulatory guidance document, and has presented seminars on environmental compliance programs and the risk associated with subsurface environmental impairment.


Joshua M. Kaplan, LEP

senior environmental professional

Mr. Kaplan is a Connecticut Licensed Environmental Professional with over 15 years of experience in the design, management, and implementation of a variety of site assessments, remedial investigations, and site remediation services. He has significant experience conducting Phase I, II, and III Environmental Site Assessments; designing cost effective remediation strategies, aiding clients in conducting thorough due diligence during real estate transactions, and addressing regulatory compliance issues. Mr Kaplan has also helped clients to acquire hundreds of thousands of dollars in brownfield funding from state agencies for site assessment and remediation projects.


Mark A. Gottlieb, LEP

senior environmental consultant

Mr. Gottlieb is a Connecticut Licensed Environmental Professional and has been involved in the environmental consulting business since 1990. During his years in environmental consulting, he has been directly involved in the completion of over 2,000 projects, including Phase I, II, and III Environmental Site Assessments, underground storage tank (UST) removals and remediation, Connecticut Property Transfer Act consulting and remediation, and regulatory consulting. The subsurface investigations he has conducted have involved petroleum hydrocarbons, volatile organic compounds, dense non-aqueous phase liquids, metals and polychlorinated biphenyls. He has effectively used Connecticut Department of Environmental Protection Environmental Land Use Restrictions as a cost-effective alternative for remediation of contaminated properties. Mr. Gottlieb has also conducted technical and financial reviews of ongoing remediation projects due to railroad accidents for a variety of reinsurance companies. Projects have included derailments resulting in explosions, fires, and chemical releases. He has also provided expert testimony in litigation resulting from environmental issues. He has been an adjunct faculty member at Western Kentucky University (1992, Department of Geology and Geography) and at the University of Hartford (1981, 1993-1997, Chemistry Department).


Andrew W. Schott, LEP

senior associate

Mr. Schott is a Connecticut Licensed Environmental Professional with over 20 years experience as an environmental consultant. He has conducted and been project manager for hundreds of Phase I, II and III Environmental site Assessments, American Society of Testing Materials Transaction Screens, and underground storage tank removal project. He has extensive experience in site remediation and the development of Conceptual Site Models needed to ensure the proper assessment and remediation of a property.


Bruce Gregoire

senior industrial hygienist

Mr. Gregoire is an environmental consultant with 10 years of experience in consulting, government, and education. He is a Licensed Asbestos Consultant in Connecticut, Massachusetts, and Rhode Island and a Licensed Lead Inspector in Connecticut. Mr. Gregoire has six years of experience conducting hazardous materials inspections for asbestos, lead, PCBs, radon, mold, and indoor air quality. He has experience in the oversight of hazardous materials clean-up and disposal for governmental, industrial, educational, and institutional sites; the development of Operations & Maintenance plans for lead and asbestos, and bid specifications for hazardous materials abatement. Mr. Gregoire has 13 years of experience in academia and teaches as an adjunct professor in the Environmental Engineering program at Three Rivers Community College in Norwich, Connecticut. In addition, he provides out-source training to clients to meet OSHA training requirements for HAZWOPER, asbestos awareness, blood borne pathogens, hazard communication, lead awareness, and universal waste. Prior to employment in the industry, Mr Gregoire conducted green roof and storm water runoff research at the University of Connecticut for three years and served in the U.S. Military for 23 years.


Peter Prey

senior associate

Mr. Prey has over 20 years experience in environmental consulting. He manages American Society of Testing Materials Transaction Screens and Phase I Site Assessments. He has conducted Phase II and III Environmental Site Assessments, underground storage tank removals and site remediation projects.


Bill Hughes



Beth Dalnegro



Patrick Gill



Patrick Neary



Ulkens Auguste



Emily Woodin


Ms. Woodin recently joined GeoQuest after completing a B.S. in Natural Resources and an Associate degree in Environmental Engineering Technology. At GeoQuest she assists with Phase I and Phase II site assessments.


Sarah Mckenzie

office manager

Ms. McKenzie received her B.A. in Theater from the University of Vermont in Burlington, VT in 2004. Ms. McKenzie has been working in the environmental consulting field since 2014. She formerly worked for FirstLight Power Resources in Hartford, CT, as a Paralegal and Contract Administrator.


David Kramer

office assistant

Mr. Kramer received his B.A. in Broadcasting from Central Connecticut State University in 2008. As a former entrepreneur and small business owner, Mr. Kramer brings a diverse skillset to the GeoQuest team. He assists Mrs. McKenzie in the office’s operations.