Connecticut

316 Courtland Avenue
Stamford, CT 06902
(203) 863-0900
fax (203) 967-6999

650 Sherman Avenue
Hamden, CT 06514-1118
(203) 288-1629
fax (203) 281-6876

316 Courtland Avenue
Stamford, CT 06902
(203) 847-1855
fax (203) 846-2161

Illinois

20895 N. Deerpath Road
Barrington, IL 60010-7224
(847) 382-4120
fax (847) 382-4154

340 N. Hoyne Avenue
Chicago, IL 60612-1623
(312) 492-7206
fax (312) 492-7210

8733 Ridgefield Road
Crystal Lake, IL 60012-2715
(815) 477-4414
Lake Geneva, WI (262) 248-1016
fax (815) 356-6947

700 Taft Avenue
Glen Ellyn, IL 60137-5809
(630) 545-0606
fax (630) 545-9981

28981 N. Herky Drive
Lake Bluff, IL 60044-1459
(847) 918-8749
fax (847) 918-7033

8871 Ramm Drive
Naperville, IL 60564-5636
(630) 692-1100
fax (630) 692-1101

3940 Willow Street
Schiller Park, IL 60176-2311
(847) 678-8733
fax (847) 678-8765

2371 S. Foster Avenue
Wheeling, IL 60090-6510
(847) 394-4226
fax (847) 394-3376

395 Industrial Drive, Unit D
West Chicago, IL 60185-1886
(630) 876-3070
fax (630) 876-0363

2371 S. Foster Avenue
Wheeling, IL 60090-6510
(847) 394-3903
fax (847) 394-9709

Maryland

8000 Queenair Drive
Gaithersburg, MD 20879
(301) 444-9041
fax (301) 444-9049

New York

57 Valley Avenue
Elmsford, NY 10523-3008
(914) 345-8733
fax (914) 345-3340

458 Lexington Ave
Mount Kisco, NY 10549-1006
(914) 241-8110
fax (914) 241-8116

501 N. MacQuesten Parkway
Mt. Vernon, NY 10552-2609
(914) 668-5628
fax (914) 668-6442

Pennsylvania

131 East Church Road
King of Prussia, PA 19406
(610) 265-4444
fax (610) 265-7495

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Virginia

6748 Gravel Avenue
Alexandria, VA 22310-3220
(703) 922-8733
fax (703) 922-9029

22830 Quicksilver Drive
Dulles, VA 20166-2007
(703) 661-1700
fax (703) 661-1701

22830 Quicksilver Drive
Dulles, VA 20166-2007
(703) 661-8001
fax (703) 661-8002

Regional Offices

485 Devon Park Drive, Suite 111
Wayne, PA 19087
(610) 239-8017
fax (610) 239-7576

2371 S. Foster Avenue
Wheeling, IL 60090-6510
(847) 394-4220
Fax (847) 394-3376

Corporate Headquarters

Wheeling, Illinois 60090-2015
(847) 459-8400
fax (847) 459-7469

(847) 394-8002
fax (847) 394-9709

2138 Priest Bridge Ct. Suite 4
Crofton, MD 21114-2463
toll-free (877) 818-7337
phone (410) 774-0024
fax (301) 858-0184

Tree roots often extend up to two times the width of the canopy and typically exist in the upper 18 inches of soil.