Ace Hardware
Adler Tank Rentals
Advanced Physicians
Aeropres Corporation
Aires Consulting
Aker Kvaerner Singer
Akzo Nobel Morris Plant
Ambitech Engineering Corporation
AMEC Earth & Environmental
AMEX Construction Co
AMS Environmental, Inc.
Apollo Colors, Inc.
Argonne National Laboratory
Atlantic Plant Services
Aux Sable Liquid Products
BMWC Group
Barnett/Bates Corporation
BEST Environmental, Inc.
Blachford Corporation
Black & Veatch
Blue Island Phenol LLC
Bodine Services of Peoria
Brandenburg Industrial Serv
Brieser Construction
Canal Terminal Company
Carus Corporation
Caterpillar Inc.
CDS Services, Inc.
Chemstress Consultant
Chicago Carbon Company
CITGO Petroleum Corp.
Civil & Environmental Consultants
CL Coatings
Clean Harbors Environmental
CMC America Corp.
Conestoga-Rovers & Asso
Construction Safety Service
Contractors Assn of Will &
   Grundy Counties
Cook Composites & Polymers
CORAC Industries, Inc.
Corn Products Int’l
Crane Composites Inc.
Crowther Roofing
D Construction
DeSoto, Inc.
DIAGEO Global Supply
Direct Energy
DISA, Inc.
Diversified CPC Int’l
Dow Chemical Company
Dow Chemical - Wilmington
Dresden of Illinois
Dubak Electrical Contractors
EA Services
Eagle Services Corporation
ENSR International
ENVIRON International Corp.

Environmental Monitoring &
   Technologies
ExxonMobil Joliet Refinery
Fastrak Construction Mgmt.
First Midwest Bank
Flint Hills Resources
Forbo Adhesives
Gallagher Asphalt
Geosyntec Consultants
Gerdau Ameristeel
Graycor Industrial
Group O Supply Chain Solutions
Grundy Area Vocational
Harris Bank
Hayes Mechanical Inc.
Heritage Environmental
IDES
IMTT Illinois- Channahon
IMTT Illinois-Lemont
Indicom Electric
INEOS Silicas
INEOS NOVA
Interstate Chemicals
ITT Flygt Corporation
J-M Printers, Inc.
Johns Manville
Joliet Equipment
Joliet Junior College
Joliet Tri-State Fire
Kaluzny Brothers, Inc.
KM Plant Services
Lewis University
LFR Levine-Fricke
Lindblad Construction
Lockport Steel Fabricators
Loders Croklaan
Luse Holdings
LyondellBasett Industries
Malcolm Pirnie, Inc.
Manpower Inc.
Manta Industrial Services
Manufacturing Technology
Matheson TriGas
McIntyre Group
Meade Electric Co.
Meccon Industries
MedWorks
Midwest Generation
Midwest Valve Services
MKD Electric, Inc.
MSA
Nat'l Electrical Cont. Assn.
Nicor
Northern Environmental
ORR Safety Corp
Pactiv Corporation

Parent Petroleum
Parsons
Patrick Engineering
PDM Plumbing, Heating
Pekron Consulting
Physicians Immediate Care
Plainfield Companies
Plumbing & Mechanical
   Contractors Association
Priority Staffing
Professional Service
Quad Plus, Inc.
Rain For Rent
Reichhold, Inc.
Rialto Square Theater
Riverside Corporate Health Service
RMT, Inc.
Rogina & Associates
Ruettiger, Tonelli & Assoc.
SAPA Industrial Extrusions
S.E.T. Environmental
Scheck Mechanical Corp
ScreenSafe
SEECO Environmental
Shaw Environmental
Sidley Austin Brown & Wood
Simplex Grinnell
Smurfit-Stone Container
Spherion
STARCON International
Stepan Company
Sterling Engineering
Stevenson Crane Service
Strand Associates
Sulzer Pumps
Superheat FGH Services
Superior Petroleum
TDW Services
TEAM Industrial Serv.
Terracon Consultants, Inc.
Thermoscan Inc
Three Rivers Construction Alliance
Three Rivers Education
for Employment Services
Total Safety US, Inc.
Toyal America Inc.
TriHydro Corp.
Trinity Consultants
United Machine & Tool
University of St. Francis
URS Corporation
Valero Terminal
Vector Pipeline
Veolia ES Industrial Svcs.
Versar, Inc.
Will County EMA
Will-Grundy Center for
Independent Living
Will County Medical Associates