29 PALMS WATER DISTRICT
5-D MINING & CONSTRUCTION, INC.
A-1 OIL
AAA AJAX PUMPING SERVICE
ABC SAND & ROCK
ACHEN GARDNER ENGINEERING, LLC
AEON DEVELOPMENT INC.
AHSA AIR CHEM SYSTEMS, INC.
AIR CHEM SYSTEMS, INC.
AK INDUSTRIES
AKER INDUSTRIAL CONSTRUCTORS, INC.
AKER KVAERNER INDUSTRIAL CONTRACTORS
AL-STOCK ALCOA FASTENING SYSTEMS
ALEGRE TRUCKING ALEGRE
ALLIED TUBE & CONDUIT
AMERECO AMERECO
AMERICAN PUMPING SERVICE
AMERICAN WATER SHARED SERVICES CENTER
AMERICHEM ENGINEERING SERVICES
AMERICRANE COMPANY, INC.
ANCON MARINE
APACHE PIPELINES, INC.
APEX CHEMICAL
AQUACULTURE SYSTEMS TECHNOLOGIES, L.L.C.
ARCADIS U.S., INC.
ARCHER WESTERN CONTRACTORS ARIZONA
AMERICAN WATER ARIZONA
ARIZONA BOTTLED WATER
ARIZONA DEPARTMENT OF CORRECTIONS
ARIZONA DEPT OF HEALTH SERVICES
ARIZONA ELECTRIC POWER
ARIZONA GALVANIZING ARIZONA
ARIZONA GAME & FISH
ARIZONA MINING COMPANY
ARIZONA PUBLIC SERVICE
ARIZONA RECYCLING, INC.
ASARCO LLC
B-LINE DIRECTIONAL DRILLING
B & W COMMERCIAL CONTRACTORS
BANNER GOOD SAMARITAN MEDICAL CENTER
BARRICK GOLDSTRIKE
BASIC CHEMICAL SOLUTIONS, L.L.C.
BEALL TRAILERS OF ARIZONA
BENCH MARK CONSTRUCTION
BEU-MATH ENGINEERING
BHP COPPER, INC.
BHP BILLITON
BOB J. JOHNSON & ASSOCIATES INC.
BOC EDWARDS
BOHN BIOFILTER CORP.
BoMar BoMar
BORDER PRODUCTS CORP.
BORDERLAND CONSTRUCTION
BOWEN INDUSTRIAL CONTRACTORS, INC.
BRB CONTRACTORS, INC.
BRENNTAG PACIFIC
BUILDERS GUILD, INC.
BULK CARRIER SERVICES, INC.
BUREAU OF RECLAMATION-PHOENIX
C K ENGINEERING
C. S. & W. CONTRACTORS INC.
CARLOTA COPPER COMPANY
HARRY BRENTON
CCC GROUP, INC.
CECIL TRUCKING
CHEM-TAINER INDUSTRIES INC.
CHEM RESEARCH CO., INC.
CHEMICAL TRANSFER COMPANY, INC.
CHIEF CONSTRUCTION
CHLOR TECH
CHRISTOPHER WHITE
CIMETTA ENGINEERING & CONSTRUCTION CO.
CITIZENS WATER RESOURCES COMPANY
CITY OF AVONDALE
CITY OF CAVE CREEK
CITY OF CHANDLER
CITY OF ELOY
CITY OF GLENDALE.
CITY OF MESA
CITY OF PHOENIX / METRO DIVISION
CITY OF PHOENIX/PARKS & RECREATION
CITY OF SCOTTSDALE
CITY OF SEDONA
CITY OF SURPRISE WATER SERVICES CITY
CITY OF TEMPE CITY
CITY WIDE CONSTRUCTION
CIW
CLARK'S MAINTENANCE LLC
CLIMAX MOLYBDENUM CO.
COATING TECHNOLOGIES, INC.
COBRE DEL MAYO
COMPASS ENVIRONMENTAL
COMPLETE ROOFING & WATERPROOFING, INC.
CONCRETE WORKS, INC.
CONSTRUCTION 70, INC.
COOLIDGE LAND ACQUISITION COMPANY
COPPERSTATE CAR WASH SYSTEMS
COPPERSTATE COMPANIES, INC.
COPPERSTATE INDUSTRIAL SERVICES, INC.
CORROSION ENGINEERING, INC.
COUNTY OF COCHISE
CPT
CRA SERVICES
CRIMAR INDUSTRIAL
CTI LEASING
CURRIER CONSTRUCTION, INC.
CURTIS ETSITTY
CYPRUS TOHONO CORPORATION
D.L.
WITHERS CONSTRUCTION                                                                        
D.O.T
DANA KEPNER COMPANY, INC.
DBA CONSTRUCTION
DEER VALLEY PLUMBING CONTRACTORS
DENISON MINES (USA) CORP.
DETTON CONSTRUCTION
DIAMOND UNDERGROUND CONSTRUCTION
DIASOL, INC.
DIVERSIFIED DESIGN & CONSTRUCTION, INC.
DJ MILLER, INC.
DON KELLY CONSTRUCTION
DUKE/FLUOR DANIEL
DUNN EDWARDS PAINTS
DYNEGY ARLINGTON VALLEY
ECHO TRUCKING CO.,
ECOLOGY CONTROL INDUSTRIES, INC.
ELITE ENIRONMENTAL & PETROLEUM SERVICES ELITE
EMC
ENVISION
ESS INTERNATIONAL
EUSI, LLC
EWING IRRIGATION
EXCEL PLATING TECHNOLOGY, INC.
FASTENAL
FCI CONSTRUCTORS, INC.
FERGUSON ENTEPRISES, INC
FIELD LINING SERVICES, INC.
FIVE STAR INCIDENT SUPPORT CATERING
FLEET ONE INC
FMI-CYPRUS TOHONO CORPORATION
FMI JEROME FMI
FNF CONSTRUCTION, INC.
FORT MOHAVE TRIBE
FOUNTAIN HILLS SANITARY DISTRICT
FREEPORT-MCMORAN-BISBEE
FREEPORT-McMORAN-CHINO
FREEPORT-McMORAN-EL PASO
FREEPORT-McMORAN-MIAMI
FREEPORT-McMORAN-MORENCI
FREEPORT-MCMORAN-QUARTZITE
FREEPORT MCMORAN-BAGDAD INC
FREEPORT MCMORAN -SIERRITA, INC.
FREEPORT MCMORAN - SAFFORD P.T.C.
FREEPORT MCMORAN - TYRONE
FREEPORT MCMORAN REC. SERV.
FRU-CON CONSTRUCTION
GANTRY CONSTRUCTORS, INC
GARNEY CONSTRUCTION
GE GLEGG WATER TECHNOLOGIES, INC.
GEO-SUPPLY
GEOMECHANICS SOUTHWEST, INC.
GHD CORP.
GHD ENVIRONMENTAL
GOULD ELECTRONICS, INC.
GRANITE CONSTRUCTION
JACK TEPE
GREEN LEAF
GROVES INDUSTRIAL SUPPLY
H.M.I.
HAL HAYES CONSTRUCTION, INC.
HARDER MECHANICAL CONTRACTORS, INC.
HARRINGTON INDUSTRIAL PLASTICS, INC.
HASA, INC.
HAYDON BUILDING CORP
HEFLIN STEEL

HELENA CHEMICAL
HENKELS & MC COY
HIGH PEAKS WATER SERVICES
HIGHLAND ENGINEERING
HIGHLAND PRODUCTS
HILL BR
OTHERS CHEMICAL, Co
JONES HAMILTON
JONES LANG LASALLE
INTEL CORPORATION
JONOVICH COMPANIES INC
K + F ELECTRIC,
KAISER ALUMINUM & CHEMICAL CORPORATION
KARMIR,LLC
KD ENGINEERING
KG WALTERS CONSTRUCTION
KIEWIT PACIFIC COMPANY
KINETICS
KLONDYKE, INC
KLOWE ENTERPRISES
KLS HOMES
KOMATSU AMERICA
KUCC
L.W. FRENCH CONSTRUCTION CO.
LARON, INC.
LB3 ENTERPRISES
LITCHFIELD PARK SERVICE CO. 
LPR CONSTRUCTION COMPANY
LUDTKE CONTRACTING
M3 ENGINEERING & TECHNOLOGY
MACK MECHANICAL, INC.
MALCOLM PIRNIE, INC.
MARICOPA INTEGRATED HEALTH SYSTEMS
MARICOPA MEDICAL CENTER
MASSEY'S TRUCK & TANK REPAIR, INC.
MCC TECHNOLOGY, INC.
McCARTHY BUILDING COMPANIES, INC.
MERIDAN ENGINEERING
MET-PRO CORPORATION,
METCON RESEARCH
MGC CONTRACTORS
MIKE PENNINGTON
MINERAL PARK, INC.
Minerales La Negra, S. de R.L. de CV.
MINGUS CONSTRUCTORS, INC.
MMC, INC.
MMI TANK
MOUNTAIN VIEW POOL & SPA LLC
MR. PIG FARMERPICKLE CO
NELSON ENGINEERING
NICOLAS CHAPA
NICOLAS CHAPA O'NEILL
MECHANICAL SERVICE INC,
O PREMIUM WATERS
OKLAND CONSTRUCTION
OPTIMAL AIR TESTING SERVICES, INC
PCL CONSTRUCTION, INC.
PEAK PERFORMANCE
PEORIA NISSAN
PHELPS DODGE MINING CO. HURLEY
PHELPS DODGE PROCESS TECHNOLOGY CENTER
PHLEPS DODGE RECLAMATION SERVICES
PHOENIX CONSTRUCTION
PHOENIX HEAT TREATING
PHOENIX MANUFACTURING, INC.
PHOENIX PUMPS INC. PHOENIX
PIMA COUNTY WATER MANAGEMENT
PINAL COUNTY
PINAL CREEK GROUP
PINNACLE WEST CAPITAL CORP.
PLANT MAINTENANCE SERVICE
POLYTECH METAL & FABRICATION
POP FUND POP FUND PRACTICAL ENGINEERING PRACTICAL
PRAXAIR ELECTRONICS
PRECISION CONVERTING ARIZONA
QUADNA, INC.
QUEST VENTURES
QUINN PROCESS EQUIPMENY CO.
R&G VENT CLEANING SERVICE
R.E. MONKS CONSTRUCTION
RAIN WATER RAIN
RDO EQUIPMENT
RECON ENGINEERING CONSTRUCTION
RED J ENVIRONMENTAL
REMEDIAL CONSTRUCTION SERVICES, LP
RESOURCE METALS, INC.
RESTAURANT TECHNOLOGIES OF PHOENIX
RIESKAMP EQUIPMENT COMPANY, INC.
RILEY INDUSTRIAL SERVICES
RKS PLUMBING
ROBERT RUSSELL
ROCK-N-ROLL MATERIALS, INC.
ROJELIO LEON, JR.
ROMAN ROADS
ROYAL LINER
RYAN MECHANICAL COMPANY
S & M CONSTRUCTION, INC.
SALT RIVER PROJECT
SANMINA-SCI
SDB, INC.
SEDONA BOTTLING COMPANY INC
SEDONA WEST SEDONA
SEEPAGE CONTROL, INC.
SHASTA POOLS & SPAS
SHOP SHOW LOW CONSTRUCTION, INC.
SIEMENS WATER TECHNOLOGIES
SIERRA SPRINGS WATERS
SNYDER INDUSTRIES, INC.
SOTO CONSTRUCTION SOTO
SOUTH BAY EDC, INC
SID PIERSON SOUTHERN ROCK
SOUTHWEST FIBERGLASS, INC.
SOUTHWEST INDUSTRIAL COATING
SOUTHWEST MOBILE STORAGE
SOUTHWEST RIGGING
SOUTHWEST TANK AND STEEL, INC.
SPEEDIE & ASSOCIATES
STANDARD CONSTRUCTION COMPANY
STO CORP.
STURGEON ELECTRIC CO.
SUMMIT BUILDERS CONSTRUCTION COMPANY
SUN DEVIL FIRE EQUIPMENT, INC.
SUN EAGLE CORPORATION
SUNBELTS CUNVEYERED AGGREGATE DLVRY, LLC
SUNDT CONSTRUCTION INC.
SUNIZONA FAMILY FARMS
SUNLAND ASPHALT
SUPERIOR CLEANING EQUIPMENT
SUPERIOR EQUIPMENT
SURFACE CONTRACTING,
SWAG INC. SWAG
SWIMMING POOL SERVICE
SYGNOS, INC.
T & T CONSTRUCTION
T.G. Mc CAULEY CONSTRUCTION
CONSTRUCTION T3 INDUSTRIAL
TARTAN CONSTRUCTION,
TASSIELLI'S MECHANICAL SERVICES,LLC
TB CONTRACTORS
TETRA-TECH CONSTRUCTION SERVICES, INC.
THE ASHTON COMPANY, INC.
THE HARTFORD FIRE INS.
TPL, INC.
TREE DOCTORS NORTH
TRI-COM CONSTRUCTION
TRIUMPH PRECISION CASTING CO.
TROW TIERE PRECISION CONSTRUCTION
TUCSON ELECTRIC POWER COMPANY
UNITED DAIRYMAN OF ARIZONA 
UNITED LININGS, INC.
UNITED SITE SERVICE
UNIVAR
UNIVERSAL ABIT CORP
UNIVERSITY MECHANICAL
VNR MINING, INC.
WATER & ICE WHOLESALE ICE
WEISS GUYS EXPRESS WASH
WESTERN EMULSIONS
WESTERN ENVIRONMENTAL
WESTERN INDUSTRIAL RESOURCES CORP.
WESTERN POWER SERVICE  
WHEELER CONSTRUCTION, INC.
WHITE MOUNTAIN APACHE TRIBE.
WILBUR-ELLIS
WILD HORSE PASS
WILSON UTILITY CONSTRUCTION COMPANY WILSON UTILITY CONSTRUCTION
XYZ COMPANY
YULISTA MANAGEMENT
ZACHRY CONSTRUCTION CORPORATION