ROBERT CROWLEY NAMED SENIOR PRINCIPAL SCIENTIST AT MACTEC

PITTSBURGH, PA, Jan. 22, 2008 – Robert E. Crowley has been named Senior Principal Scientist at MACTEC Engineering and Consulting (MACTEC E&C). Bruce C. Coles, president of MACTEC E&C and chairman and CEO of MACTEC, Inc., the holding company (www.mactec.com), made the announcement. Crowley is based in MACTEC’s Pittsburgh office.

Crowley brings to MACTEC more than 20 years of environmental consulting experience, encompassing project and task management, site assessments/investigations, and human health and ecological risk assessments. He has worked on over 120 sites in 22 states nationwide, representing clients from wood treating, chemical, utility, primary metals, and other industries as well as law firms engaged in environmental law practice. Crowley has provided technical services on sites under Resource Conservation and Recovery Act (RCRA), Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and Toxic Substances Control Act (TSCA) enforcement actions by the US Environmental Protection Agency (EPA) and on sites regulated under various state enforcement, voluntary, and brownfields redevelopment actions.

Crowley began his career as a fisheries biologist for a Pittsburgh firm and has since worked for a number of leading private sector companies as a microscopist, assistant project environmental scientist, project manager, and senior project manager. In his most recent position, Crowley served as the Pittsburgh office manager for a large, international consulting and engineering firm.

Key projects he has supervised in the past few years have included:

• Chemical Manufacturing Facility, Southwestern, PA – Project manager for a $1.1 million investigation / risk assessment report consolidation project on a site being remediated under the state’s Land Recycling and Environmental Remediation Standards Act of 1995. The project significantly reduced the amount of remediation required at six operable units on the site.
• Chemical Manufacturing Facility, OH – Project manager for implementation of a remediation plan to clean up contaminated groundwater. Crowley led a feasibility study that determined the most cost-effective solution for remediation of a large groundwater contaminant plume. The plan was approved by the regulating agency and the remedial system was constructed. The remediation promises to shorten the cleanup period by about seven years while remaining protective of nearby sensitive receptors.
• Superfund Site, Nitro, WV – Project manager for a site-wide remedial investigation/feasibility study. The site was formerly a specialty chemical manufacturing facility that produced various batch chemical products. Crowley initially served as risk assessment task manager and coordinated risk assessment strategy and negotiated human health/ecological risk assessment issues with US EPA Region 3.
• Primary Metals Site, WA – Project Manager and technical lead on a risk assessment to support disposal of TSCA waste in an RCRA-permitted landfill. Crowley led the technical team in the production of a risk assessment that concluded placement of the waste would not pose unacceptable risks to receptors. This effort was completed under 40 CFR § 761.61(c) of the TSCA regulations and is the only successful risk assessment of its kind in the United States. The risk assessment allowed the placement of TSCA waste in the non-TSCA landfill, saving the client a significant amount of money on disposal or repermitting costs.

Crowley received a Bachelor of Science in biology from Waynesburg College.