Locations

Regional Offices

HEADQUARTERS – Reston, Virginia

11107 Sunset Hills Road, Suite 400
Reston, VA 20190
Phone: (703) 478-5186
Fax: (703) 471-4180

Huntsville, Alabama

4835 University Square, Suite 15
Huntsville, AL 35816
(256) 970-2100

Phoenix, Arizona

3877 N 7TH ST, Suite 306
Phoenix, Arizona 85014
Phone: (602) 307-0047
Fax: (480) 498-7144

Denver, Colorado

12596 West Bayaud Ave, Suite 300
Lakewood, CO 80228
Phone: (720) 381-5592

Orlando, Florida

2405 N Courtenay Parkway
Suite 203
Merritt Island, FL 32953
Phone: (407) 210-6627
Fax: (407) 965-5447

Atlanta, Georgia

5805 State Bridge Road, Suite G207
Duluth, Georgia 30097
Phone: (404) 227-5909

Overland Park, Kansas

6340 Glenwood Street, Ste. 200, Bldg. 7
Overland Park, Kansas 66202
Phone: (913) 317-8860
Fax: (913) 317-8868

Billings, Montana

Spectrum Engineering and Environmental, LLC
1413 4Th Ave N
Billings, MO 59101
Phone: (406) 259-2412
Fax: (406)-259-1456

St. Louis, Missouri

110 James S McDonnell Blvd
Hazelwood, MO 63042
Phone: (314) 380-3035

Oakhurst, New Jersey

33 Arno Street
Oakhurst, NJ 07755
Phone: (732) 233-1161

Albany, New York

Northway 10 Executive Park, 313 Ushers Road
Ballston Lake, New York 12019
Phone: (518) 877-0390
Fax: (518) 877-0414

Hudson, Ohio

581 Boston Mills Road
Suite 600
Hudson, Ohio 44236
Phone: (330) 463-3303

Haddonfield, New Jersey

9 Tanner Street, Suite 101
Haddonfield, NJ 08033
Phone: (215) 636-0667
Fax: (215) 636-0668

San Antonio, Texas

85 NE Interstate Loop 410, Suite 605
San Antonio, TX 78216
Phone: (210) 348-8778
Fax: (210) 348-8777

Kennewick, Washington

2306 South Arthur Loop
Kennewick, WA 99338
Phone: (703) 478-5186
Fax: (703) 471-4180

Project Offices

For more information contact projectoffice@hgl.com

Clear AFS, AK
Anniston, AL
Delaware City, DE
Cape Canaveral, FL
MacDill AFB, FL
Hastings, NE
Minotola, NJ
Washington Borough, NJ
Las Vegas, NV
Deadwood, SD

Satellite Offices

For more information contact satelliteoffice@hgl.com

Flagstaff, AZ
Oakland, CA
Marlborough, CT
Fort Myers, FL
Palm City, FL
Chicago, IL
Lino Lakes, MN
Clinton, MO
Fremont, NH
Tularosa, NM
Portland, OR
Chambersburg, PA
Edgefield, SC
Knoxville, TN
Austin, TX
Arlington, TX
Lubbock, TX
Richmond, VT