About Us

Cincinnati’s Oldest Locally Owned Environmental Firm

Our Roots

PSARA is based in Cincinnati, Ohio, with a regional presence in Bloomington, Indiana.

Map of Indian and Ohio with marker in southwest Ohio

Based in Cincinnati, Ohio, with a regional presence in Bloomington, Indiana, PSARA Technologies, Inc. is a trusted local environmental consulting firm with national reach. We serve a diverse clientele, from manufacturers and petroleum retailers to real estate developers and public institutions. Our expertise spans environmental compliance and permitting, site assessments, remediation strategies, wastewater and stormwater treatment design, environmental facilities management, and industrial hygiene solutions.

EST. 1986

Today, we’re proud to be the oldest locally owned environmental firm in Cincinnati, offering a full range of services to industry-leading companies across the nation.

Leadership Team

Some teams are assembled. Some teams are engineered.The PSARA Technologies Leadership team is a group of passionate professionals deep in experience and wide in capabilities. Together, they set the company’s direction, inspire staff, and nurture lasting client relationships.

portrait of Michael C. Hessling, PE

Michael C. Hessling, PE

President and CEO

portrait of Michael C. Hessling, PE

Michael C. Hessling, PE

President and CEO

The founding principal of PSARA Technologies, Mike has more than 30 years of consulting experience in environmental site investigations, remedial project management, hazardous waste site safety, regulatory compliance, and training. A nationwide expert in the assessment, remediation, and redevelopment of environmentally impacted properties, he has completed more than 150 Superfund and PRP-led cleanups over a 20-year span, including remedial operations at more than a dozen former landfills and municipal dumps. Currently, Mike directs $10 million per year in site remediation services for a Fortune 200 company and supervises a national environmental services account for a major petroleum retailer. He specializes in negotiating and implementing advantageous remedial solutions in a variety of regulatory frameworks, including state voluntary programs, agreed orders, and consent decrees.
portrait of Michael P. O’Connell, PG

Michael P. O’Connell, PG

Vice President – Director of Environmental Assessments

portrait of Michael P. O’Connell, PG

Michael P. O’Connell, PG

Vice President – Director of Environmental Assessments

Mike is a professional geologist with more than 20 years of experience in environmental project management, UST regulatory compliance, state petroleum trust funds, subsurface investigations, and remediation technologies used in the cleanup of chlorinated compounds and petroleum constituents. As director of PSARA’s Environmental Assessment Group, he leads our field investigations of potentially contaminated properties. Before his career at PSARA, Mike managed teams of technical document reviewers and claims reviewers on behalf of the IDEM ELTF Program and participated in policy-making discussions and decisions regarding reimbursement, investigation, closure levels, and risk-based site evaluations of LUST sites.  Mike is a registered professional geologist in Indiana, Kentucky, Tennessee, North Carolina, and Georgia.
portrait of Jason Van Dyke, CIH

Jason Van Dyke, CIH

Director of Environmental Compliance

portrait of Jason Van Dyke, CIH

Jason Van Dyke, CIH

Director of Environmental Compliance

Jason is a Certified Industrial Hygienist (CIH) with 25 years of experience in environmental health and safety management at environmentally impaired sites. Jason conducts industrial hygiene sampling as well as asbestos and mold inspections at a wide variety of sites and structures; he is currently licensed in six states as an asbestos inspector and management planner. As Director of Environmental Compliance, Jason provides environmental management support to manufacturers, including electronic, pharmaceutical, and food manufacturers.

Our Culture

Over our three-decade history, PSARA has crafted a unique, tight-knit culture centered around integrity, commitment, collaboration, positive energy, and innovation.

Over 90% of our business comes from loyal clients.

PSARA was founded in 1986 with the mission of bringing a higher level of engineering and industrial hygiene to an emerging environmental remediation market. While we remain firmly rooted in the environmental remediation and restoration market, PSARA’s services have adapted over the years to meet client needs and changes in the environmental, health, and safety regulations. Over that time, PSARA has been fortunate to have contributed to some of the most significant environmental projects in the country.

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