STL Appoints Laboratory Directors for St. Louis and San Francisco Locations

PRESS RELEASE

Date July 13, 2006
For Immediate Release 

Severn Trent Laboratories, Inc. (STL) recently named Ms. Martha Cahill and Mr. Peter Moreton as Laboratory Directors for its St. Louis , MO and San Francisco, CA locations.

Martha Cahill is the appointed Laboratory Director for STL St. Louis, effective July 1, 2006. She has been with STL for 8 years as a Customer Service Manager, Business Development Manager, and interim Laboratory Director at STL Richland. Ms. Cahill has been in the laboratory environmental business for 28 years, specializing in Radiological & Mixed Waste (RMW).

Peter Moreton assumed the role of Laboratory Director at STL San Francisco on June 26, 2006. He has worked in the environmental laboratory industry for over 15 years and originally joined STL San Francisco as Quality Assurance Manager in 2004.

Laboratory Directors are an integral part in technical and administrative management at each STL laboratory location. STL Laboratory Directors ensure laboratory quality assurance, health and safety, and focus on customer service in accordance with established company, client, and regulatory requirements.

About STL

Severn Trent Laboratories, Inc. (STL) is the industry's leading environmental testing company. Operations in the United States include 31 laboratories, 16 Service Centers and QED Environmental Systems, Inc., the leading supplier of groundwater sampling equipment and remediation pumping systems. STL affiliates include the Aerotech P&K team, which brings together the capabilities of Aerotech Laboratories, Inc. and P&K Microbiology Services, Inc. STL employs over 2,100 people and has revenues of $245 million in the United States.

For more information, contact:

Jim Miller
Vice President Business Development
Severn Trent Laboratories, Inc.
716-691-2600
Visit our website @ www.stl-inc.com