| A Central LLC | Wenatchee, WA | 1, 13 |
| A-Core of Boise Inc | Kennewick, WA | 2, 24, 3, 6 |
| A1 Asbestos, LLC | Wenatchee, WA | 1 |
| Abhe & Svoboda | Jordan , MN | 13, 18 |
| Advanced American Construction | Portland , OR | 6, 66, 7, 9 |
| American Babbitt Bearing | Huntington, WV | 13, 23 |
| Apollo Sheet Metal, Inc. DBA: Apollo Mechanical | Kennewick, WA | 13, 14, 23, 39 |
| Apollo, Inc. | Kennewick, WA | 11, 2, 3, 33, W-A2, W-B1 |
| Arrow Concrete and Asphalt Specialties | Spokane, WA | 2, 65 |
| Asplundh Tree Expert LLC | Woodinville, WA | 42, 63 |
| Associated Underwater Services, Inc. | Spokane, WA | 66, 9 |
| Ballard Marine Construction, LLC | Washougal, WA | 13, 9 |
| Basin Tree Service & Pest Control, Inc. | Ephrata, WA | 16, 34-T, 34-U, 42, 48, 63 |
| Batchelor Excavation, LLC | Manson, WA | 11, 13, 2, 42, 68 |
| Beckstead Electric Inc. | Wenatchee, WA | 3, 40, 51 |
| Bella Terra LLC | Woodland, WA | 11 |
| Benson Farms, Inc. | Moses Lake, WA | 11, 16, 48 |
| Black Forest Finishing | Wenatchee, WA | 11, 13, 18, 2, 22, 27, 3, 42, 6 |
| Blackwater Marine, LLC | Kirkland, WA | 66, 9 |
| BriVo Corp. | Cheney , WA | 13, 23, 43, 9 |
| BRUCE MECHANICAL INC. | KENNEWICK, WA | 14 |
| Burke Electric LLC | Bellevue, WA | 34-Aa, 34-Ab, 34-Ac, 34-Bb, 34-Ca, 34-Cb, 34-Cc, 34-Cd, 34-Ce, 34-Cf, 34-Cg, 34-Da, 34-Eb, 34-Fa, 40, 43, 51, 52 |
| BZR Power Division LLC | Philomath, OR | 34-Da |
| C H MURPHY/CLARK ULLMAN INC | Tacoma, WA | 13, 23, 33 |
| C.H.W Enterprises, Inc dba Northwest Motor Service | Longview, WA | 39, 51 |
| Cache Valley Electric Co. | Salt Lake City, UT | 34-Aa, 34-Ac, 34-Ba, 34-Ca, 34-Cb, 34-Cc, 34-Cd, 34-Ce, 34-Cf, 50, 52, 53 |
| Canyon Fence LLC | Cashmere, WA | 27 |
| Cascade Cable Constructors, Inc. | Spokane, WA | 11, 69, 70, 71 |
| Cascade Central Construction, LLC | Wenatchee, WA | 13, 3, 6 |
| Cascade Weed & Pest Management | Chelan, WA | 48 |
| Central Washington Asphalt, Inc. | Moses Lake, WA | 11, 2 |
| CFM/VR-TESCO | Elgin, IL | 13, 23 |
| Christenson Electric, Inc. | Portland, OR | 34-Aa, 34-Ab, 34-Ac, 34-Ba, 34-Bb, 34-Bc, 34-Ca, 34-Cb, 34-Cc, 34-Cd, 34-Ce, 34-Cf, 34-Cg, 34-Da, 34-Ea, 34-Eb, 34-Fa, 40, 46, 51, 52, 67, 69, 70, 71 |
| Coating Specialty LLC | Wenatchee, WA | 18 |
| Columbia Crane | WENATCHEE, WA | 43, 7 |
| Columbia Industrial Coatings, LLC | Richland, WA | 18 |
| Combined Construction, Inc | Mukilteo, WA | 11, 13, 16, 18, 22, 23, 3, 6, 64, 7, 9 |
| Comfort Zone Heating & Air Conditioning, Inc. | East Wenatchee, WA | 14 |
| Communication Technology Services, LLC. | Marlborough, MA | 50 |
| Community Glass Company, Inc. | Wenatchee, WA | 3 |
| Contech Services, Inc. | Seattle, WA | 6 |
| Control Technology Inc | Kirkland, WA | 51 |
| Crux Diving, Inc. | Kenmore, WA | 9 |
| Davey Tree Surgery Company | Livermore, CA | 34-T, 34-U, 63 |
| Day Management Corp. dba Day Wireless Systems | Milwaukie, OR | 50, 51, 52, 69, 70, 71 |
| DJB Construction LLC | Wenatchee, WA | 11, 13, 2, 33, 42, 6, 66, W-A2 |
| Double EMC Marine LLC | Seattle, WA | 13, 3 |
| Duwamish Services LLC | SEATTLE, WA | 11, 13, 18, 23, 6, 9 |
| Electrical Utility Services LLC | Davenport, WA | 34-Aa, 34-Ab, 34-Ac, 34-Ca, 34-Cb, 34-Cc, 34-Da, 34-Ea, 34-Eb, 34-Fa |
| Extreme Coatings, Inc. dba E C I Services | Pasco, WA | 1, 13, 18, 23, 3, 33 |
| F.D. Thomas, Inc. | Medford, OR | 1, 18, 6 |
| Farwest Iron Works, Inc. | Wenatchee, WA | 13, 18, 23, 3 |
| Fogle Pump & Supply, Inc. | Colville, WA | 24 |
| France & Co. | Wenatchee, WA | 13, 3, 45, 56, 64, 65 |
| Fusion Babbitting Company, Inc. | Milwaukee, WI | 23 |
| Gates Construction, Inc. | Wenatchee, WA | 11, 16, 33, 42, 66, W-A2 |
| Global Diving & Salvage, Inc. | Seattle, WA | 11, 13, 39, 66, 9 |
| Granite Construction Company | Yakima, WA | 11, 2 |
| Graybeal Signs, Inc. | Wenatchee, WA | 65, 7 |
| Greenberry Industrial LLC | Vancouver, WA | 13, 14, 23, 3, 39, 64 |
| GREGORY EXCAVATION LLC | Richland, WA | 11, 16, 68, 71 |
| Hale & Long General Contractors, Inc. | Wenatchee, WA | 13, 3, 6 |
| Halme Builders, Inc. | Davenport, WA | 13, 3, 6 |
| Hancock Sandblasting & Paint LLC | Pasco , WA | 1, 18, 3 |
| Harbor Offshore, Inc. | Spokane, WA | 9 |
| Hildebrand Construction, Inc. | Wenatchee, WA | 13, 16, 3, 6 |
| Holmes Electric Co. | Kent, WA | 51, 52, 53, 69, 70, 71 |
| Holt Services Inc. | Edgewood , WA | 24 |
| Hurst Construction, LLC | Wenatchee, WA | 11, 13, 16, 2, 33, 34-Fa, 39, 46, 6, 63, W-A2, W-B1 |
| IMCO General Construction | Ferndale, WA | 13, W-A2, W-B1 |
| Industrial Light & Energy, Inc. dba NW Edison Inc. | Woodinville, WA | 51 |
| Inland Fire Protection, Inc. | Wenatchee, WA | W-A2 |
| Integrated Power Services LLC | Portland, OR | 13, 23, 51 |
| IRRIGATION TECHNOLOGY AND CONTROL, INC. | East Wenatchee, WA | 13, 16, 24, 3, 33, 39, 9 |
| IRS Environmental of Washington, Inc. dba IRS Envi | Spokane Valley, WA | 1 |
| J Lawrence Industries LLC | Stanwood, WA | 23 |
| J&K Earthworks, LLC | Rock Island, WA | 11, 16, 68, W-A2, W-B1 |
| Jason Sanderson Construction LLC | Chelan, WA | 11, 13, 27, 3, 6 |
| JH Kelly, LLC | Longview, WA | 11, 13, 14, 23, 3, 34-Cb, 34-Cc, 34-Fa, 51, 6 |
| K&N Electric Motors, Inc. | Spokane Valley, WA | 23, 39, 51, 7 |
| Kemp West, Inc. | Snohomish, WA | 34-T, 34-U, 42, 63 |
| Knight Const. & Supply, Inc. | Deer Park, WA | 11, 13, 22, 23, 33, 39, 51, 6, 66, 7, 9, W-A2 |
| KP2 LLC, dba Lawn Rangers | Wenatchee, WA | 16 |
| KP2, LLC dba Pennington Construction | Wenatchee, WA | 11, 13, 16, 2, 34-Fa, 6 |
| KRCI LLC | East Wenatchee, WA | 11, 13, 33, 42, 46, 6, W-A2, W-B1 |
| KVA Electric, Inc. | Arlington, WA | 34-Ca, 34-Cb, 34-Cd, 34-Ce, 34-Cf, 34-Cg, 51 |
| Leewens Corporation | Kirkland, WA | 22, 6 |
| Legacy Telecommunications, LLC | Ritzville, WA | 13, 40 |
| Long Painting Company | Kent, WA | 18 |
| Lumenal Lighting, LLC | Mountlake Terrace, WA | 51 |
| MacDonald-Miller Facility Solutions | Seattle, WA | 14, 51 |
| Machinery Installation & Maintenance, Inc. | Mill Creek, WA | 13, 23, 3 |
| Machinists, Inc. | Seattle, WA | 23 |
| Magnum Power, LLC | Castle Rock, WA | 11, 13, 24, 34-Aa, 34-Ab, 34-Ac, 34-Ba, 34-Bb, 34-Bc, 34-Ca, 34-Cb, 34-Cc, 34-Cd, 34-Ce, 34-Cf, 34-Cg, 34-Da, 34-Ea, 34-Eb, 34-Fa, 34-T, 34-U, 34-V, 46, 51, 63, 69, 7, 70, 71 |
| Marine Co., Inc. dba HDB Marine | Harrison, ID | 23, 9 |
| Marine Industrial Construction LLC | Wilsonville, OR | 13, 23, 39, 7, 9 |
| Maslonka Powerline Services | Spokane, WA | 13, 43, 51, 65 |
| Michels Corporation | Neenah, WI | 34-Aa, 34-Ab, 34-Ac, 34-Ba, 34-Bb, 34-Bc, 34-Ca, 34-Cb, 34-Cc, 34-Cd, 34-Ce, 34-Cf, 34-Cg, 34-Da, 34-Ea, 34-Eb, 34-Fa, 51, 69, 70, 71 |
| Midland Electric, Inc. | Davenport, WA | 3, 51 |
| Mike Bach Drilling Company | Ellensburg, WA | 24 |
| Mitchell Trucking & Paving, Inc. | East Wenatchee, WA | 11, 13, 2 |
| Moe Asphalt Patching and Sealcoating, Inc. | Wenatchee, WA | 11, 13, 2 |
| Mountain States Const. Co. | Sunnyside, WA | 11, 13, 3, 33, 39, 6 |
| National Wood Treating Company | Albany, OR | 34-V |
| Neals Flagging Service LLC | Ephrata, WA | 46 |
| Neptune Marine LLC | Mount Vernon, WA | 13, 9 |
| North American Substation Services, LLC | Altamonte Springs, Fl | 34**, 34-Cb, 34-Cf, 51 |
| North American Substation Services, LLC | Altamonte Springs, Fl | 51 |
| North Cascades Heating & Air Conditioning, Inc. | Entiat, WA | 13, 14, 3 |
| Northwest Playground Equipment, Inc. | Issaquah, WA | 13 |
| Northwest Sandblast and Paint LLC | Spokane, WA | 18 |
| Northwest Steel Fabrication, Inc. | Deer Park, WA | 18, 23 |
| Olin Excavation, LLC | Entiat, WA | 11, 13, 2, 6, 68 |
| Olson Brother Pro-Vac, LLC | Puyallup, WA | 6 |
| One Way Construction NW | Leavenworth, WA | 13 |
| Osmose Utilities Services, Inc. | Peachtree City, GA | 34-V |
| Otis Elevator Company dba Northwest Elevator Co | Spokane, WA | 28 |
| Oxbo, Inc. | Scappoose , OR | 43 |
| Pacific Northwest Infrastructure, Inc. dba Columbi | Wenatchee, WA | 7 |
| Pacific Pile & Marine, LP | Seattle, WA | 11, 13, 9 |
| Palouse Power, LLC | Quincy, WA | 11, 13, 2, 3, 34**, 34-Aa, 34-Ab, 34-Ac, 34-Ba, 34-Bb, 34-Bc, 34-Ca, 34-Cb, 34-Cc, 34-Cd, 34-Ce, 34-Cf, 34-Cg, 34-Da, 34-Ea, 34-Eb, 34-Fa, 34-U, 34-V, 51, 6, 69, 71 |
| PAR Electrical Contractors Inc | Hubbard, OR | 3, 34**, 34-Aa, 34-Ab, 34-Ac, 34-Ba, 34-Bb, 34-Bc, 34-Ca, 34-Cb, 34-Cc, 34-Cd, 34-Ce, 34-Cf, 34-Cg, 34-Ea, 34-Eb, 34-Fa, 51, 53, 67, 69, 70, 71 |
| Paramount Communications Inc. | Richland, WA | 34-Ea, 34-Eb, 34-Fa, 69, 71 |
| Pease & Sons, Inc. | Tacoma, WA | 13, 3, 6 |
| Peter Faulkner Masonry | East Wenatchee, Wa. | 6 |
| Pipkin Inc. dba Pipkin Construction | Wenatchee, WA | 11, 13, 16, 2, 33, 34**, 34-Ab, 34-Ac, 34-Cc, 34-Ce, 34-Da, 34-Fa, 34-U, 42, 46, 6, 66, 68, W-A2, W-B1 |
| Plumbco INC | Wenatchee, WA | 13, 33, 64, W-A2 |
| PME of Ohio, Inc. | Cincinnati, OH | 23 |
| Potelco, Inc. | Sumner, WA | 34-Aa, 34-Ab, 34-Ba, 34-Bb, 34-Bc, 34-Ca, 34-Cb, 34-Cc, 34-Cd, 34-Ce, 34-Cf, 34-Cg, 34-Da, 34-Ea, 34-Eb, 34-Fa, 40, 51, 69, 70, 71 |
| POWER CITY ELECTRIC INC | Spokane, WA | 14, 3, 34-Aa, 34-Ab, 34-Ac, 34-Ca, 34-Cb, 34-Cc, 34-Cd, 34-Ce, 34-Da, 40, 51, 52 |
| Pumptech Inc | Moses Lake, WA | 33, 39 |
| Purcell P & C, LLC dba Purcell Painting & Coatings | Tukwila, WA | 18 |
| Quigg Bros., Inc. | Aberdeen, WA | 11, 13, 2, 6, 9 |
| Rains Contracting, Inc. | Malott, WA | 11, 13, 2, 46, 9 |
| Rayfield Bros. Excavating, Inc. | Leavenworth, WA | 11, 13, 16, 2, 23, 34-Ac, 34-Cc, 34-Fa, 39, 42, 43, 6, 68, W-A2, W-B1 |
| Ridge2River Construction LLC | Soap Lake, WA | 11, 13, 22, 27, 3, 6, 9 |
| Ridgeline Custom Builders, LLC | Wenatchee, WA | 13, 3, 6 |
| Rimmer & Roeter Construction, Inc. | Cashmere, WA | 13, 3 |
| Road Products Inc. | Spokane, WA | 2, 6, 68 |
| Rock Steel Structures Inc | Moses Lake, WA | 13, 22, 27, 3, 6 |
| Russell Crane Service, Inc. | Yakima, WA | 13, 7 |
| S&L Underground, Inc. | Bonners Ferry, ID | 11, 16, 33, W-A2, W-B1 |
| S&S Coatings, Inc. | Spokane, WA | 1, 18 |
| Salcido Connection, Inc. | Wenatchee, WA | 14 |
| Saunders Line Construction, Inc. | Cheney, WA | 71 |
| Saxon Enterprises LLC | Tacoma, WA | 1, 18 |
| Schmitt Electric Inc. | Wenatchee, WA | 13, 14, 3, 40, 51, 52, 53, 67, 70, 71 |
| Selland Construction, Inc. | Wenatchee, WA | 11, 13, 2, 3, 33, 34-Cc, 34-Fa, 43, 46, 6, 66, 68, 9, W-A2, W-B1 |
| Smith Excavation | Cashmere, WA | 11, 13, 16, 33, 34-Cc, 34-Fa, 42, 6, W-A2 |
| Steelhead Constructors, Inc. | Palo Cedro, CA | 11 |
| Strider Construction Co., Inc. | Bellingham, WA | 11, 13, 46, 6, 9, W-A2 |
| Techno Coatings | Anaheim, Ca | 1, 18 |
| TEK Construction, Inc. | Bellingham, WA | 11, 33 |
| Topper Industries, Inc. | Woodland, WA | 13, 9 |
| Transpac Marinas, Inc. | Anacortes, WA | 13, 9 |
| Trenchless Construction Services, LLC | Arlington, WA | 34-Fa |
| Tumwater Drilling & Pump Inc. | Dryden, WA | 24 |
| Utec Metals Inc | Spokane Valley, WA | 23 |
| Vita Green LLC | Wenatchee, WA | 16, 27, 48, 64, 68 |
| Wadeco, Inc dba Wells and Wade Mechanical | Wenatchee, WA | 13, 14, 22, 23, 3 |
| Wagstaff, Inc. dba Wagstaff Applied Technologies | Spokane, WA | 23, 39 |
| Waters Excavation & Development Inc | Peshastin, WA | 11, 33 |
| Watersmith Construction, Inc. | Tumwater, WA | 13, 9 |
| Wenatchee Quality Welding and Fabrication | Cashmere, WA | 23, 3 |
| Wesslen Construction, Inc. | Spokane, WA | 1, 11, 13, 18, 27, 6, 9 |
| Western Partitions, Inc. | Wilsonville, OR | 18, 3 |
| Wheeler Excavation LLC | Benton City, WA | 11, 13, 3 |
| Whitebird, Incorporated | Wenatchee, WA | 11, 13, 14, 18, 22, 23, 27, 3, 6 |
| Whitefish Energy Holdings, LLC | Whitefish, MT | 11, 13, 34-Aa, 34-Ab, 34-Ac, 34-Ba, 34-Bb, 34-Bc, 34-Ca, 34-Cb, 34-Cc, 34-Cd, 34-Ce, 34-Cf, 34-Cg, 34-Da, 34-Ea, 34-Eb, 34-Fa, 34-T, 34-U, 40, 43, 51, 69 |
| Willamette Fence Co., Inc. | Portland, OR | 27 |
| Wilson Construction Co | Canby, OR | 34-Aa, 34-Ab, 34-Ac, 34-Ba, 34-Bb, 34-Bc, 34-Ca, 34-Cb, 34-Cc, 34-Cd, 34-Ce, 34-Cf, 34-Cg, 34-Da, 34-Ea, 34-Eb, 34-Fa, 34-U, 34-V, 43, 51, 71 |
| Woodland Resource Services, Inc. | Ellensburg, WA | 16, 48 |
| Zuluaga Electric, LLC | Manson, WA | 3, 51 |