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Offices

Downers Grove Office

Jacob & Hefner Associates, Inc.
1333 Butterfield Road, Suite 300
Downers Grove, IL 60515
630-652-4600

Moline Office

Jacob & Hefner Associates, Inc.
5030 38th Avenue, Suite 5
Moline, IL 61265
309-757-1900

Irvine Office

JHA Environmental, Inc.
15375 Barranca Parkway, Suite J-101
Irvine, CA 92618
949-453-1045

Simi Valley Office

JHA Environmental, Inc.
4680 Los Angeles Avenue, Suite O
Simi Valley, CA 93063
 949-453-1045

Sacramento Office

JHA Remediation, LLC
9779 Business Park Drive, Suite C
Sacramento, CA 95827
916-599-9224

Atlanta Offices

Jacob & Hefner Associates, Inc.
3675 Crestwood Parkway, Suite 400
Duluth, Georgia 30096
P: 770-817-7615
C: 770-680-3593

Jacob & Hefner Associates, Inc.
3440 Blue Springs Road NW
Suite 503
Kennesaw, GA 30144
P: 678-569-2418
C: 770-672-2276

Seattle Office

JHA Environmental, Inc.
1420 U Court Northwest
Auburn, Washington 98001
P: 206-379-1651

Executives

Jeff Jacob, PE

630-652-4620
jjacob@jacobandhefner.com
Downers Grove, IL

William Bohne, PE

630-652-4621
bbohne@jacobandhefner.com
Downers Grove, IL

Ed Batlle

714-719-6852
ebatlle@jacobandhefner.com
Irvine, CA