Airborne Imaging takes delivery of Lynx Mobile Mapper M1

Toronto, Canada, May 16, 2011 Optech Incorporated, the worlds leading manufacturer of advanced lidar and camera survey instruments, announced today that Airborne Imaging, a Clean Harbors company based in Calgary, Alberta, has purchased Optechs next-generation Lynx Mobile MapperTM.

We are pleased to have Airborne Imaging augment their aerial Optech equipment with a Lynx system, said Daina Morgan, Optechs Product Manager, Lynx Mobile Mapper. Given their many years of experience with airborne data collection, their ability to acquire large and diverse projects, and their proven ability to adopt and embrace new technology, we anticipate many groundbreaking surveys will be undertaken by Airborne Imaging with their Lynx M1.

Martin Maric, Airborne Imagings Sales Manager for Data Sales and New Acquisitions, focuses on the companys ability to offer a more diverse product to their clients. The company has always been a leader in aerial lidar services. This new Lynx system allows us to expand the service we offer to existing clients and lends itself to entering new and exciting markets with the latest in mobile mapping technology by the worlds leading lidar manufacturer, Optech, he said.

About Optech

Optech is the world leader in the development, manufacture and support of advanced lidar and imaging-based survey instruments. With operations and staff worldwide, Optech offers both standalone and fully integrated lidar and camera solutions in airborne terrestrial mapping, airborne laser bathymetry, mobile mapping, mine cavity monitoring, and industrial process control, as well as space-proven sensors.

About Airborne Imaging

Airborne Imaging has offices in Canada and the United States. Established in 2004, they have acquired over 250,000 square miles of lidar data for over 300 clients around North America. The professionals at Airborne Imaging are experts in the acquisition and processing of lidar data and have been at the forefront of collection and interpretation of geospatial data for the past two decades. They look forward to exceeding their clients expectations every day.

Airborne Imaging is a fully owned subsidiary of Clean Harbors (NYSE:CLH).

For further information, please contact:

Daina Morgan

Product Manager, Lynx Mobile Mapper

Optech Incorporated

300 Interchange Way

Vaughan, Ontario, Canada L4K 5Z8

+1 905 660 0808

Martin Maric

Sales Manager

Airborne Imaging

Suite 130, 885 42nd Avenue SE

Calgary, AB Canada T2G 1Y8

+1 403 215 2963