Office Location:
2082 Oakleaf Street
Joliet, IL 60436
(815) 729-1002
Meeting Location:
2114 S. I-80 Frontage Rd.
Joliet, IL 60436
FAX:(815) 725-0147



Find A Union Contractor:
Drilling Contractors & Field Technicians


NELSON TESTING SERVICES, INC.
1224 Remington Rd.
Schaumburg, IL 60173
Phone: (847) 882-8675

O'BRIEN & ASSOCIATES, INC.
1235 E. Davis St.
Arlington Heights, IL 60005
Phone: (847) 398-1441

OZ ENGINEERINGS, LLC.
1206 Sunset Rd.
Wheaton, IL 60187
Phone: (708) 296-4325

PATRICK DRILLING INC. D/B/A PRECON DRILLING
3000 W. Lake St.
Melrose Park, IL 60160
Phone: (708) 343-9703

QC SOLUTIONS, INC.
1475 Perryville Rd.
Rockford, IL 61108
Phone: (815) 484-4300

R.W. COLLINS CO.
7225 W. 66th St.
Bedford Park, IL 60638
Phone: (708) 458-6868

RAIMONDE DRILLING CORP.
777 Factory Rd., 1st Floor
Addison, IL 60101
Phone: (630) 458-0590

RDNP DRILLING, INC.
840 Industrial Blvd.
Crown Point, IN 46307
Phone: (219) 663-4160

S.A.M. CONSULTANTS, INC.
500 E. 22nd St.
Lombard, IL 60148
Phone: (630) 424-1200

S.T.A.T.E. TESTING, L.L.C. (Main Facility)
570 Rock Road, Unit K
East Dundee, IL 60118
Phone: (847) 836-6002

S.T.A.T.E. TESTING L.L.C. North and South Chicago Facilities
3210 N. Troy
Chicago, IL 60618
Phone: (773) 279-9253
Phone: (773) 224-7530
7649 S. State St.
Chicago, IL 60619

SEECO ENVIRONMENTAL SERVICES, INC.
7350 Duvan Dr.
Tinley Park, IL 60477
Phone: (708) 429-1685

SUBSURFACE EXPLORATION, INC. (SEI)
811 E. Park Ave.
Libertyville, IL 60048
Phone: (847) 968-4863

TECHKNOW ENGINEERING, LLC
30 E. Adams St., Suite 1100
Chicago, IL 60603
Phone: (312) 345-1009

TESTECH CONSULTANTS, INC.
314 Brook St.
Elgin, IL 60120
Phone: (847) 622-1240

TESTING SERVICE CORP. (TSC)
Carol Stream & Tinley Park Offices

360 S. Main Place (Corporate Office)
Carol Stream, IL 60188
Phone: (630) 462-2600
Phone: (708) 429-2080
8201 W. 183rd St., Suite C
Tinley Park, IL 60477

TESTING SERVICE CORP. (TSC)
Cary & Shorewood Offices

209 Cleveland St., Suite C
Cary, IL 60013
Phone: (847) 516-0505
Phone: (815) 744-1510
203 Earl Rd., Suite A
Shorewood, IL 60431
Will County Contractor

TESTING SERVICE CORP. (TSC)
DeKalb & Gurnee Offices

650 Peace Rd., Suite D
DeKalb, IL 60115
Phone: (815) 748-2100
Phone: (847) 249-6040
401 Riverside Dr., Suite 10
Gurnee, IL 60031

UNIVERSAL CONSTRUCTION TESTING
1548 Old Skokie Rd.
Highland Park, IL 60035
Phone: (847) 831-5343

WINDY CITY DRILLING, INC.
1214 Timber Place
New Lenox, IL 60451
Phone: (815) 485-0852
Fax: (815) 485-3360
Will County Contractor

WNH CONSULTING ENGINEERS
24137 W. 111th St., Unit C
Naperville, IL 60564
Phone: (630) 904-2709
Fax: (630) 904-3691

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