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About Clean Soils

Clean Soils Environmental, Ltd. (CSE) is a customer-focused environmental consulting company that specializes in Licensed Site Professional (LSP) services concerning the assessment, management, and remediation of oil and hazardous materials throughout Massachusetts and the New England region. Since 1989, we’ve provided cost-effective solutions to a wide range of environmental challenges in full compliance with all… Continue Reading →


Our Mission

CSE is committed to providing professional, pragmatic, and cost-effective solutions to environmental and regulatory compliance challenges. CSE strives to reach this goal by retaining knowledgeable individuals with integrity in order to provide our clients with quality work, attention to detail, rapid responses, and creative solutions for difficult technical problems. CSE is an agile, responsive firm… Continue Reading →


Our History

Clean Soils Environmental, Ltd. (CSE) was founded in 1989 by Denise M. Prosser. Ms. Prosser was then attending New Hampshire College to obtain her MBA. Her final project entailed researching new business horizons to develop a family business. The environmental consulting field was approximately 5 years old in 1989 with a vast growth potential. With… Continue Reading →


Our Team

Clean Soils Environmental, Ltd. (CSE) is comprised of a highly qualified team of professionals including geologists, environmental scientists and field technicians specializing in a wide variety of environmental site assessments, remedial activities, permitting, and regulatory compliance. CSE believes that the success of a project depends upon fully understanding our client’s needs which is benefited by… Continue Reading →


Our Clients

At CSE, we value our clients. Our goal is that each client of CSE is so satisfied with our environmental consulting services and performance that they become a repeat client for years to come. Our environmental solutions have provided assistance for clients ranging from due diligence assessments during real estate transactions for both buyers and… Continue Reading →