Denver, Colorado:
 
David J. Folkes, P.E., President or
Margaret (Poppy) Staub
7009 S. Potomac Street, Suite 300
Centennial, CO 80112
Tel: (303) 790-1340
Fax: (303) 790-1347
Toll Free 1-888-790-1366
Email: dfolkes@envirogroup.com or
         mstaub@envirogroup.com

Northern Colorado:
 
Bence V. Close, P.E.
3561 Stagecoach Road, Suite 205
Longmont, CO 80504
Tel: (720) 494-2600
Fax: (720) 494-2688
Toll Free 1-888-790-1366
Email: bclose@envirogroup.com

Chicago, Illinois:
 
Garry Stanley
2272 95th Street, Suite 200
Naperville, Illinois 60564
Tel: (815) 450-8150
Toll Free: 1-888-790-1366
Email: gstanley@envirogroup.com

Latham, New York:
 
Susan B. Welt, MPH, P.E.
Eric Lovenduski
26 Century Hill Drive, Suite 205
Latham, NY 12110
Tel: (518) 785-0800
Fax: (518) 785-1880
Toll Free: 1-888-790-1366
Email: swelt@envirogroup.com
         elovenduski@envirogroup.com