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Highway/Roadway Design, Traffic Studies and Design, and Roadway Construction Engineering Services Professional Bridge Design and Bridge Construction Engineering Services Transit Design and Transit Construction Engineering Services Category 1: Simple Highway Bridges Category 1: Major Highways and Arterial Streets Category 2: Typical Highway Bridges Category 1: Transit Station Design (Architectural Finishes) Architecture and Engineering Category 2: Arterial and Collector Streets Category 3: Advanced Typical Highway Bridges Category 2: Elevated Transit Station Design Pre-Qualified Consultants Category 3: Residential and Industrial Streets Category 4: Complex Highway Bridges Category 3: Subway Transit Station Design Category 4: Roadway and Roadside Enhancements Category 5: Railroad Bridges Category 4: Construction Engineering for Transit Projects June 10, 2013 Category 5: Traffic Signals Category 6: Movable Bridges Category 5: Streetscape, Riverwalk and Urban Landscape Category 6: Traffic Engineering Studies: Data Collection & Analysis Category 7: Major Bridges Category 6: Transit Facilities Category 7: Intelligent Transportation Systems (ITS) Category 8: Construction Engineering for Bridge Projects Category 8: Construction Engineering for Roadway Projects Category 9: Bridge Architecture Bolded Firms are Certified M/W/DBEs Date Given Is The Beginning (Start) Date of Pre-Qualification Date Given Is The Beginning (Start) Date of Pre-Qualification Date Given Is The Beginning (Start) Date of Pre-Qualification 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 1 2iM Group 8-May-06 8-May-06 2-Mar-06 2 ABNA Engineering 28-Jan-10 28-Jan-10 15-Feb-08 15-Feb-08 15-Feb-08 3 Accurate Group, Inc. 9-Mar-05 9-Mar-05 6-Jun-02 9-Mar-05 9-Mar-05 8-Jan-01 2-Feb-02 4 Alfred Benesch & Company 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 5-Jul-12 1-Mar-00 5 Altamanu Inc. 7-Dec-06 6 Alvord, Burdick & Howson, LLC 12-Oct-05 12-Oct-05 12-Oct-05 12-Oct-05 12-Oct-05 2-Nov-05 12-Jun-07 7 American Consulting Engineers, LLC 8-May-06 17-Feb-00 17-Feb-00 8-May-06 8-May-06 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 8-May-06 1-Mar-00 1-Mar-00 8 Apex Consulting Engineers, LLC 27-Jan-06 27-Jan-06 27-Jan-06 27-Jan-06 12-Oct-05 27-Aug-07 27-Aug-07 27-Aug-07 9 APS Consulting, Inc. 12-Jun-07 10 Architrave, Ltd. 9-Feb-01 11 Ardmore Associates, LLC 17-May-04 17-May-04 11-May-04 2-Jun-04 2-Jun-04 2-Jun-04 2-Jun-04 12 ARUP 15-Mar-12 20-May-09 13 Avila Computer Services, Inc. 6-Jun-02 14 Baker Engineering, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 14-Jan-02 20-Dec-05 20-Dec-05 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 2-Feb-02 2-Feb-02 15 Bauer Latoza Studio 21-May-03 21-Jan-03 21-Jan-03 2-Jan-03 16 Baxter & Woodman 10-Apr-08 10-Apr-08 10-Apr-08 10-Apr-08 10-Apr-08 10-Apr-08 13-Dec-12 13-Dec-12 13-Dec-12 17 Beckley Engineering, Inc. 6-May-04 12-May-04 18 Bloom Consultants, LLC 14-Apr-05 14-Apr-05 6-May-04 6-May-04 12-Oct-05 12-Aug-05 12-Aug-05 12-Aug-05 12-Aug-05 12-Aug-05 12-Aug-05 12-Aug-05 19 Bollinger, Lach & Associates, Inc. 8-Jan-01 8-Jan-01 21-Aug-03 14-Nov-00 14-Nov-00 14-Nov-00 12-Jun-03 3-Sep-04 20 Bowman, Barrett & Associates 25-Sep-07 25-Sep-07 7-Dec-06 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 21 Branco Notch Engineering, Inc. 27-Aug-07 27-Aug-07 27-Aug-07 27-Aug-07 22 Bucher, Willis & Ratliff Corporation 17-Feb-00 17-Feb-00 17-Feb-00 23 Burns and McDonnell 30-Dec-08 6-May-04 6-May-04 6-May-04 10-Jun-02 12-May-04 12-May-04 12-May-04 15-Mar-12 12-May-04 15-Mar-12 14-Jan-02 2-Jun-04 2-Jun-04 24 Camiros 12-Jun-07 25 Camp Dresser & McKee, Inc. 10-Jun-02 8-Jan-01 10-Jun-02 9-Feb-01 23-Jul-02 26 CH2M Hill, Inc. 27-Jan-06 27-Jan-06 26-Jan-06 7-Jul-09 20-Dec-05 20-Dec-05 20-Dec-05 20-Dec-05 27 Christian Roge & Associates, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 9-Feb-01 28 Christopher B. Burke Engineering, Ltd. 10-Jun-02 10-Jun-02 10-Jun-02 10-Jun-02 14-Jan-02 14-Jan-02 27-Aug-07 14-Jan-02 14-Jan-02 2-Feb-02 2-Feb-02 2-Feb-02 2-Feb-02 29 Ciorba Group, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 30 Civiltech Engineering, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 18-Mar-03 18-Mar-03 8-Aug-08 8-Aug-08 31 Clark Dietz, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 32 Clark Engineers, Inc. 6-Jun-02 6-Jun-02 6-Jun-02 6-Jun-02 6-Jun-02 6-Jun-02 2-Jan-03 2-Jan-03 2-Jan-03 17-Mar-03 17-Mar-03 17-Mar-03 2-Jan-03 33 Collins Engineers, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 12-Oct-05 1-Mar-00 1-Mar-00 1-Mar-00 3/15/2012 1-Mar-00 1-Mar-00 1-Mar-00 8-Aug-12 2-Feb-02 2-Feb-02 34 Conservation Design Forum 7-Dec-06 12-Jun-07 35 Cotter Consulting, Inc. 8-Jan-01 9-Feb-01 36 Crawford, Murphy & Tilly, Inc. 4-Nov-09 10-Jun-02 10-Jun-02 10-Jun-02 10-Jun-02 10-Jun-02 14-Jan-02 14-Jan-02 14-Jan-02 14-Jan-02 37 CTE Consoer Townsend Envirodyne Engineers 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 38 Daniel Loftus and Associates 12-Oct-05 12-Oct-05 12-Oct-05 12-Oct-05 12-Oct-05 12-Aug-05 39 Daniel P Coffey & Associates 9-Feb-01 9-Feb-01 9-Feb-01 40 David Mason & Associates, Ltd. 25-Sep-07 21-May-03 2-Jan-03 2-Jan-03 2-Jan-03 41 DB Sterlin Consultants, Inc. 6-Jun-02 6-Jun-02 16-Feb-00 23-Nov-04 23-Nov-04 14-Nov-00 3-Sep-04 3-Sep-04 9-Feb-01 3-Sep-04 42 Delcan Corporation 17-Feb-00 17-Feb-00 17-Feb-00 43 Delta Engineering, Inc. 17-Feb-00 10-Jun-02 10-Jun-02 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 12-Jun-07 2-Feb-02 2-Feb-02 2-Feb-02 44 d'escoto, Inc. 27-Jan-06 5-Mar-09 45 Design Consulting Engineers 8-Jan-01 14-Nov-00 9-Feb-01 46 DeStefano & Partners 17-Feb-00 1-Mar-00 1-Mar-00 47 DLK Decker Legge Kemp Architect 10-Jun-02 1-Mar-00 1-Mar-00 2-Feb-02 2-Feb-02 2-Feb-02 48 DLZ Corporation 30-Dec-08 30-Dec-08 30-Dec-08 8-Jan-09 23-Oct-08 23-Oct-08 23-Oct-08 23-Oct-08 23-Oct-08 23-Oct-08 49 DMJM Daniel, Mann, Johnson & Mendenhall 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 26-Jul-02 26-Jul-02 26-Jul-02 26-Jul-02 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 2-Feb-02 2-Feb-02 50 Douglas Hoerr Landscape Architecture, Inc. 6-Jun-02 2-Jun-04 51 DuSable, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 52 Dynasty Group, Inc. 7-Dec-06 53 Earth Tech Environment & Infrastructure, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 5-Aug-02 1-Mar-00 1-Mar-00 5-Aug-02 1-Mar-00 2-Feb-02 2-Feb-02 2-Feb-02 2-Feb-02 12-Jun-07 54 Edwards and Kelcey 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 5-Apr-05 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 2-Feb-02 2-Feb-02 55 EJM Engineering 9-Mar-05 8-Jan-01 17-Feb-00 2-Feb-02 56 Engineering Resources Associates, Inc. 30-Dec-08 57 Environmental Design International, Inc. 3-May-04 17-Jun-09 25-Sep-08 58 Epstein, A. and Sons International, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 7-Jul-09 1-Mar-00 1-Mar-00 14-Jan-02 9-Feb-01 11-Jan-02 59 ESI Consultants, Vice President (formely K-Plus) 4-Nov-09 25-Sep-07 25-Sep-07 25-Sep-07 25-Sep-07 21-Mar-05 20-Aug-08 20-Aug-08 20-Aug-08 31-Jan-08 31-Jan-08 60 Everest Engineering Company 6-Jun-02 61 Gandhi & Associates, Inc. 17-Feb-00 17-Feb-00 10-Jun-02 10-Jun-02 62 Gannett Fleming, Inc. 8-Jan-01 8-Jan-01 14-Nov-00 14-Nov-00 14-Nov-00 14-Nov-00 1-Mar-00 1-Mar-00 3-Sep-04 3-Sep-04 63 GAS Graef, Anhalt, Schloemer & Associates 17-Feb-00 17-Feb-00 17-Feb-00 7-Dec-06 17-Feb-00 17-Feb-00 17-Feb-00 14-Nov-00 14-Nov-00 14-Nov-00 2-Feb-02

Highway/Roadway Design, Traffic Studies and Design, and Roadway Construction Engineering Services Professional Bridge Design and Bridge Construction Engineering Services Transit Design and Transit Construction Engineering Services Category 1: Simple Highway Bridges Category 1: Major Highways and Arterial Streets Category 2: Typical Highway Bridges Category 1: Transit Station Design (Architectural Finishes) Architecture and Engineering Category 2: Arterial and Collector Streets Category 3: Advanced Typical Highway Bridges Category 2: Elevated Transit Station Design Pre-Qualified Consultants Category 3: Residential and Industrial Streets Category 4: Complex Highway Bridges Category 3: Subway Transit Station Design Category 4: Roadway and Roadside Enhancements Category 5: Railroad Bridges Category 4: Construction Engineering for Transit Projects June 10, 2013 Category 5: Traffic Signals Category 6: Movable Bridges Category 5: Streetscape, Riverwalk and Urban Landscape Category 6: Traffic Engineering Studies: Data Collection & Analysis Category 7: Major Bridges Category 6: Transit Facilities Category 7: Intelligent Transportation Systems (ITS) Category 8: Construction Engineering for Bridge Projects Category 8: Construction Engineering for Roadway Projects Category 9: Bridge Architecture Bolded Firms are Certified M/W/DBEs Date Given Is The Beginning (Start) Date of Pre-Qualification Date Given Is The Beginning (Start) Date of Pre-Qualification Date Given Is The Beginning (Start) Date of Pre-Qualification 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 64 Globetrotters Engineering Corporation 7-Jul-12 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 22-Jul-12 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 7-Jun-10 65 Gonzalez Hasbrouck Architects 3-Sep-04 3-Sep-04 3-Sep-04 3-Sep-04 66 GSG Consultants, Inc. 17-Jun-09 67 Gustafson Guthrie Nichol Ltd. 10-Sep-03 68 Hanson Professional Services, Inc. 9-Mar-05 9-Mar-05 9-Mar-05 9-Mar-05 23-Nov-04 23-Nov-04 23-Nov-04 23-Nov-04 23-Nov-04 23-Nov-04 69 Harbour Engineering, Inc. 10-Jun-02 10-Jun-02 14-Jan-02 2-Feb-02 70 Hartshorne Plunkard, LTD 20-May-09 71 Hayden Bulin Larson Design Group Ltd. 6-Jun-02 72 HBM Engineering Group, LLC 1-Dec-03 1-Dec-03 1-Dec-03 1-Dec-03 73 HDR Engineering, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 7-Dec-06 17-Feb-00 17-Feb-00 6-Jun-02 17-Feb-00 14-Nov-00 14-Nov-00 14-Nov-00 14-Nov-00 14-Nov-00 14-Nov-00 12-May-04 1-Mar-00 3-Sep-04 3-Sep-04 3-Sep-04 74 Hellmuth, Obata, Kassabaum, Inc. 2-Feb-02 2-Feb-02 2-Feb-02 75 Hitchcock Design Group 7-Dec-06 20-Dec-05 76 HNTB Corporation 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 2-Feb-02 2-Feb-02 1-Mar-00 2-Feb-02 2-Feb-02 77 HOH Harry O. Hefter Associates, Inc 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 78 Homer L. Chastain & Associates, LLP 27-Jan-06 6-Jun-02 6-Jun-02 6-Jun-02 2-Jan-03 2-Jan-03 1-Dec-03 2-Jan-03 2-Jan-03 79 HW Lochner 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 2-Feb-02 80 HWR, Inc. 10-Jun-02 14-Nov-00 14-Jan-02 2-Feb-02 2-Feb-02 81 IG Consulting, Inc. 25-May-10 25-May-10 7-Jul-09 25-May-10 82 Infrastructure Engineering, Inc. 8-Jan-01 8-Jan-01 21-May-03 21-May-03 8-Jan-01 14-Jan-02 3-Nov-05 27-Aug-07 14-Jan-02 2-Feb-02 2-Feb-02 2-Feb-02 83 Infrastructure Strategies, J.V. 8-Jan-01 84 International Engineering Consultants, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Dec-05 85 Iteris, Inc. 8-Jan-01 86 Jackson Architects 2-Feb-02 2-Feb-02 2-Feb-02 87 Jackson Medhi, Inc. 1-Mar-00 88 Jacobs Engineering Corp. 10-Apr-08 10-Apr-08 10-Apr-08 10-Apr-08 10-Apr-08 10-Apr-08 10-Apr-08 10-Apr-08 8-Aug-08 8-Aug-08 8-Aug-08 8-Aug-08 8-Aug-08 8-Aug-08 8-Aug-08 5-Mar-09 5-Mar-09 5-Mar-09 5-Mar-09 89 Jacobs/Ryan Associates 6-Jun-02 90 JJR. LLC 30-Dec-08 20-Feb-12 91 Johnson & Lasky Architects 23-Nov-04 92 Kaltsouni Mehdi, Inc. 8-Aug-08 8-Aug-08 27-Jan-06 27-Jan-06 27-Jan-06 27-Jan-06 31-Jan-08 93 KAM Engineering, Inc. 6-Jun-02 6-Jun-02 6-Jun-02 94 KCS Corporation 4-Nov-09 95 Kenny Construction Company 9-Feb-01 96 Kimley-Horn and Associates, Inc. 25-May-10 25-May-10 25-May-10 10-Jun-02 8-Jan-01 10-Jun-02 97 KLOA Kenig, Lindgren, O'Hara, Aboona, Inc. 4-Nov-09 17-Feb-00 98 Knight E/A, Inc 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 6-Feb-02 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 23-Nov-04 1-Mar-00 23-Nov-04 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 2-Feb-02 2-Feb-02 99 Krueck + Sexton Architects 22-Aug-12 100 Kudrna & Associates, Ltd 17-Feb-00 17-Feb-00 17-Feb-00 6-May-04 17-Feb-00 14-Nov-00 14-Nov-00 12-May-04 12-May-04 14-Nov-00 2-Feb-02 2-Feb-02 101 Land Design Collaborative, Inc. 21-Jan-03 102 Legat Architects 2-Feb-02 2-Feb-02 103 Louis Berger & Associates, Inc. 8-Jan-01 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 21-Aug-03 1-Mar-00 1-Mar-00 1-Mar-00 23-Apr-04 23-Apr-04 12-Jun-03 104 Louis Jones Enterprises, Inc. 8-Jan-01 14-Jan-02 2-Feb-02 105 Macondo Corporation 8-Jan-01 14-Jan-02 2-Feb-02 2-Feb-02 2-Feb-02 2-Feb-02 106 MACTEC Engineering and Consulting, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Apr-09 26-Jul-02 26-Jul-02 26-Jul-02 26-Jul-02 2-Feb-02 2-Feb-02 2-Feb-02 107 Marbach Brady & Weaver, Inc. 6-May-04 108 Mc Clier Corporation 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 2-Feb-02 2-Feb-02 109 McDonough Associates, Inc. 2-Feb-01 17-Feb-00 17-Feb-00 2-Feb-01 8-May-06 17-Feb-00 1-Mar-00 1-Mar-00 14-Nov-00 14-Nov-00 1-Mar-00 1-Mar-00 9-Feb-01 1-Mar-00 3-Sep-04 4-Feb-02 110 Milhouse Engineering and Construction, Inc. 9-Nov-05 9-Nov-05 9-Nov-05 9-Nov-05 111 Muller & Muller, Ltd. 17-Feb-00 1-Mar-00 1-Mar-00 27-Jan-06 27-Jan-06 27-Jan-06 4-Feb-02 4-Feb-02 112 MWH Energy and Infrastructure 17-Feb-00 17-Feb-00 17-Feb-00 8-Jan-01 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 4-Feb-02 4-Feb-02 113 Nakawatase, Wyns & Associates, Inc. 8-Jan-01 17-Feb-00 10-Jun-02 27-Aug-07 27-Aug-07 114 NIA Architects, Inc. 4-Feb-02 4-Feb-02 4-Feb-02 115 Omega & Associates 21-Aug-03 1-Dec-03 3-Sep-04 116 OWP&P Architects, Inc. 18-Mar-03 18-Mar-03 14-Apr-03 14-Apr-03 14-Apr-03 14-Apr-03 14-Apr-03 117 Parsons Brinkerhoff Quade and Douglas 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 14-Nov-00 118 Parsons Transportation Group, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 23-Jul-02 23-Jul-02 23-Jul-02 23-Jul-02 23-Jul-02 23-Jul-02 119 Pasco, Inc. 1-Mar-00 120 Patrick Engineering Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 15-Mar-12 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 4-Feb-02 4-Feb-02 4-Feb-02 121 Peter Lindsay Schaudt Landscape Architecture 6-Jun-02 122 PG Engineering Associates, Inc. 14-Nov-00 14-Nov-00 14-Nov-00 9-Feb-01 123 Primera Engineers & Architects 12-Oct-05 8-Jan-01 12-Oct-05 12-Oct-05 12-Oct-05 14-Jan-02 23-Nov-04 13-Dec-12 13-Dec-12 14-Jan-02 4-Feb-02 1-Mar-00 4-Feb-02 4-Feb-02 124 R & G Engineering 25-May-10 125 Rada Architects, Ltd. 4-Feb-02 4-Feb-02 4-Feb-02 126 Raymond Professional Group, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 14-Jan-02 14-Jan-02 14-Jan-02 14-Jan-02 127 Regina Webster & Associates, Inc. 21-Aug-03 25-Sep-07 21-Aug-03 128 Rheo Group, PC 24-Feb-05 24-Feb-04 24-Feb-08

Highway/Roadway Design, Traffic Studies and Design, and Roadway Construction Engineering Services Professional Bridge Design and Bridge Construction Engineering Services Transit Design and Transit Construction Engineering Services Category 1: Simple Highway Bridges Category 1: Major Highways and Arterial Streets Category 2: Typical Highway Bridges Category 1: Transit Station Design (Architectural Finishes) Architecture and Engineering Category 2: Arterial and Collector Streets Category 3: Advanced Typical Highway Bridges Category 2: Elevated Transit Station Design Pre-Qualified Consultants Category 3: Residential and Industrial Streets Category 4: Complex Highway Bridges Category 3: Subway Transit Station Design Category 4: Roadway and Roadside Enhancements Category 5: Railroad Bridges Category 4: Construction Engineering for Transit Projects June 10, 2013 Category 5: Traffic Signals Category 6: Movable Bridges Category 5: Streetscape, Riverwalk and Urban Landscape Category 6: Traffic Engineering Studies: Data Collection & Analysis Category 7: Major Bridges Category 6: Transit Facilities Category 7: Intelligent Transportation Systems (ITS) Category 8: Construction Engineering for Bridge Projects Category 8: Construction Engineering for Roadway Projects Category 9: Bridge Architecture Bolded Firms are Certified M/W/DBEs Date Given Is The Beginning (Start) Date of Pre-Qualification Date Given Is The Beginning (Start) Date of Pre-Qualification Date Given Is The Beginning (Start) Date of Pre-Qualification 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 129 RJN Group, Inc. 12-Oct-05 12-Oct-05 12-Oct-05 12-Oct-05 12-Oct-05 23-Nov-04 23-Nov-04 23-Nov-04 130 RM Chin & Associates 9-Mar-05 8-Aug-08 5-Mar-09 131 Robert Gordon Associates 17-Feb-00 132 Robert H. Anderson & Associates, Inc. 12-May-04 12-May-04 12-May-04 133 Ross Barney Architects 1-Mar-00 1-Mar-00 4-Feb-02 4-Feb-02 4-Feb-02 134 Roula Associates Architects, CHTD. 1-Jan-03 1-Jan-03 1-Jan-03 135 RS&H 15-Mar-12 15-Mar-12 15-Mar-12 15-Mar-12 15-Mar-12 136 Rubinos & Mesia Engineers, Inc. 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 3-Sep-04 137 Sam Schwartz Engineering Group 10-Nov-10 8-Jan-01 10-Nov-11 138 Seton Engineering 17-Feb-00 6-May-04 17-Feb-00 17-Feb-00 139 Shah Engineering, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 140 Shaw Environment & Infrastructure 20-May-09 141 Singh & Associates, Inc. 8-Jan-01 3-May-04 3-May-04 3-May-04 14-Nov-00 14-Nov-00 9-Feb-01 142 Site Design Group 6-Jun-02 143 Skidmore, Owings & Merrill, LLP (SOM) 6-Jun-02 6-Jun-02 23-Nov-04 23-Nov-04 23-Nov-04 23-Nov-04 4-Feb-02 5-Feb-02 144 Sonoc Architects, Inc. 23-Jul-02 23-Jul-02 23-Jul-02 145 Soodan & Associates, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 10-Mar-00 10-Mar-00 10-Mar-00 4-Feb-02 4-Feb-02 146 Spaan Tech, Inc. 30-Dec-08 23-Apr-04 23-Apr-04 8-Aug-08 31-Jan-08 147 Stanley Consultants, Inc. 27-Jan-06 17-Feb-00 17-Feb-00 27-Jan-06 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 14-Jan-02 14-Jan-02 14-Jan-02 27-Aug-07 9-May-06 12-Jun-07 1-Dec-03 148 STS Consultnats, Ltd. 12-Oct-05 12-Oct-05 12-Oct-05 12-Oct-05 12-Oct-05 12-Oct-05 12-Oct-05 12-Aug-05 12-Aug-05 12-Aug-05 12-Aug-05 12-Aug-05 12-Aug-05 12-Aug-05 149 STV Incorporated 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 8-Aug-08 1-Mar-00 1-Mar-00 8-Aug-08 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 150 TAMS Consultants, Inc. 1-Mar-00 1-Mar-00 1-Mar-00 151 Tania Consulting Services 9-Mar-05 23-Nov-04 3-Sep-04 152 Techknow Engineering 25-May-10 25-May-10 25-May-10 153 TECMA Associates, Inc. 27-Jan-06 8-Jan-01 17-Feb-00 154 Telvent Farradyne, Inc. 26-Sep-07 155 Teng & Associates, Inc. 6-Jun-02 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 2-Jan-03 2-Jan-03 1-Mar-00 2-Jan-03 2-Jan-03 1-Mar-00 1-Mar-00 1-Mar-00 4-Feb-02 4-Feb-02 3-Sep-04 4-Feb-02 4-Feb-02 156 Terra Engineering Ltd. 12-Oct-05 10-Jun-02 10-Jun-02 10-Jun-02 10-Jun-02 10-Jun-02 15-Mar-12 15-Mar-12 15-Mar-12 4-Feb-02 4-Feb-02 157 Terry Guen Design Associates 6-Jun-02 20-Dec-05 158 Teska Associates 25-May-10 159 The Roderick Group 17-Jun-09 160 Thomas Engineering Group, LLC. 25-May-10 25-May-10 25-May-10 17-Apr-09 8-Aug-08 161 TranSmart Technologies, Inc. 17-Feb-00 162 TranSystems Corporation 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 15-Mar-12 15-Mar-12 1-Mar-00 15-Mar-12 21-Jan-03 21-Jan-03 21-Jan-03 21-Jan-03 21-Jan-03 163 Trotter Built Construction, Inc. 3-Sep-04 164 TY Lin International Great Lakes, Inc. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 4-Feb-02 1-Mar-00 4-Feb-02 4-Feb-02 165 UBM, Inc. 1-Mar-00 166 University of Il. Urban Transportation Center 8-Jan-01 8-Jan-01 167 Urban Works Ltd. 1-Dec-03 168 URS Corporation d/b/a URS Corp. Americas 17-Feb-00 17-Feb-00 17-Feb-00 10-Jun-02 17-Feb-00 17-Feb-00 10-Jun-02 17-Feb-00 14-Jan-02 14-Jan-02 14-Jan-02 14-Jan-02 14-Jan-02 14-Jan-02 14-Jan-02 14-Jan-02 14-Jan-02 1-Mar-00 1-Mar-00 1-Mar-00 4-Feb-02 4-Feb-02 4-Feb-02 169 V3 Companies of Illinois, Ltd. 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 17-Feb-00 1-Mar-00 1-Mar-00 1-Mar-00 14-Jan-02 1-Mar-00 1-Mar-00 31-Jan-08 31-Jan-08 170 WHKS & Co. 8-Aug-08 8-Aug-08 8-Aug-08 8-Aug-08 171 Wight & Company 17-Feb-00 17-Feb-00 17-Feb-00 22-Feb-07 23-Nov-04 23-Nov-04 23-Nov-04 12-May-04 23-Nov-04 2-Jun-04 31-Jan-08 172 Wilbur Smith Associates 6-Jun-02 6-Jun-02 17-Feb-00 17-Feb-00 21-Jan-03 173 William Worn Architects 2-Jan-03 174 Wiss, Janney, Elsterner Associates, Inc. 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 1-Mar-00 Total: 36 77 86 67 62 63 22 85 81 77 59 34 44 18 14 70 21 33 37 26 64 64 46

Architecture and Engineering Pre-Qualified Consultants last update 7/9/2009 Certification Ethnicity Bolded Firms are Certified M/W/DBEs African Hispanic Native Asian Non- MBE WBE DBE American American American American Minority 1 2iM Group X X 2 ABNA Engineering 3 Accurate Group, Inc. X X 4 Alfred Benesch & Company 5 Altamanu Inc. X X X X 6 Alvord, Burdick & Howson, LLC 7 American Consulting Engineers, LLC 8 Apex Consulting Engineers, LLC 9 APS Consulting, Inc. X X 10 Architrave, Ltd. X X 11 Ardmore Associates, LLC X X X X 12 ARUP 13 Avila Computer Services, Inc. 14 Baker Engineering, Inc. 15 Bauer Latoza Studio X X 16 Baxter & Woodman 17 Beckley Engineering, Inc. 18 Bloom Consultants, LLC 19 Bollinger, Lach & Associates, Inc. 20 Bowman, Barrett & Associates 21 Branco Notch Engineering, Inc. 22 Bucher, Willis & Ratliff Corporation 23 Burns and McDonnell 24 Camiros 25 Camp Dresser & McKee, Inc. 26 CH2M Hill, Inc. 27 Christian Roge & Associates, Inc. 28 Christopher B. Burke Engineering, Ltd. 29 Ciorba Group, Inc. 30 Civiltech Engineering, Inc. 31 Clark Dietz, Inc.

Architecture and Engineering Pre-Qualified Consultants last update 7/9/2009 Certification Ethnicity Bolded Firms are Certified M/W/DBEs African Hispanic Native Asian Non- MBE WBE DBE American American American American Minority 32 Clark Engineers, Inc. 33 Collins Engineers, Inc. 34 Conservation Design Forum 35 Cotter Consulting, Inc. 36 Crawford, Murphy & Tilly, Inc. 37 CTE Consoer Townsend Envirodyne Engineers 38 Daniel Loftus and Associates 39 Daniel P Coffey & Associates 40 David Mason & Associates, Ltd. X X 41 DB Sterlin Consultants, Inc. 42 Delta Engineering, Inc. X X 43 d'escoto, Inc. X X X 44 Design Consulting Engineers X X 45 DeStefano & Partners 46 DLK Decker Legge Kemp Architect 47 DLZ Corporation 48 DMJM Daniel, Mann, Johnson & Mendenhall 49 Douglas Hoerr Landscape Architecture, Inc. 50 DuSable, Inc. 51 Dynasty Group, Inc. X X 52 Earth Tech Environment & Infrastructure, Inc. 53 Edwards and Kelcey 54 EJM Engineering X X 55 Engineering Resources Associates, Inc. 56 Environmental Design International, Inc. X X X 57 Epstein, A. and Sons International, Inc. 58 Everest Engineering Company X X 59 Gandhi & Associates, Inc. X X 60 Gannett Fleming, Inc. 61 GAS Graef, Anhalt, Schloemer & Associates 62 Globetrotters Engineering Corporation X X 63 Gonzalez Hasbrouck Architects

Architecture and Engineering Pre-Qualified Consultants last update 7/9/2009 Certification Ethnicity Bolded Firms are Certified M/W/DBEs African Hispanic Native Asian Non- MBE WBE DBE American American American American Minority 64 GSG Consultants, Inc. 65 Gustafson Guthrie Nichol Ltd. 66 Hanson Professional Services, Inc. 67 Harbour Engineering, Inc. 68 Hartshorne Plunkard, LTD 69 Hayden Bulin Larson Design Group Ltd. 70 HBM Engineering Group, LLC X X X 71 HDR Engineering, Inc. 72 Hellmuth, Obata, Kassabaum, Inc. 73 Hitchcock Design Group 74 HNTB Corporation 75 HOH Harry O. Hefter Associates, Inc 76 Homer L. Chastain & Associates, LLP 77 HW Lochner 78 HWR, Inc. X X X 79 IG Consulting, Inc. 80 Infrastructure Engineering, Inc. X X 81 Infrastructure Strategies, J.V. 82 International Engineering Consultants, Inc. 83 Iteris, Inc. 84 Jackson Architects 85 Jackson Medhi, Inc. 86 Jacobs Engineering Corp. 87 Jacobs/Ryan Associates X X 88 JJR. LLC 89 Johnson & Lasky Architects 90 Kaltsouni Mehdi, Inc. X X 91 KAM Engineering, Inc. X X 92 Kenny Construction Company 93 Kimley-Horn and Associates, Inc. 94 KLOA Kenig, Lindgren, O'Hara, Aboona, Inc. 95 Knight E/A, Inc

Architecture and Engineering Pre-Qualified Consultants last update 7/9/2009 Certification Ethnicity Bolded Firms are Certified M/W/DBEs African Hispanic Native Asian Non- MBE WBE DBE American American American American Minority 96 K-Plus Engineering, Ltd. 97 Kudrna & Associates, Ltd 98 Land Design Collaborative, Inc. 99 Legat Architects 100 Louis Berger & Associates, Inc. 101 Louis Jones Enterprises, Inc. X X 102 Macondo Corporation 103 MACTEC Engineering and Consulting, Inc. 104 Marbach Brady & Weaver, Inc. 105 Mc Clier Corporation 106 McDonough Associates, Inc. 107 Metro Transportation Group, Inc. 108 Milhouse Engineering and Construction, Inc. X X 109 Muller & Muller, Ltd. X X 110 MWH Energy and Infrastructure 111 Nakawatase, Wyns & Associates, Inc. X X X 112 National Engineering Technology Corporation 113 NIA Architects, Inc. 114 Omega & Associates X X 115 OWP&P Architects, Inc. 116 Parsons Brinkerhoff Quade and Douglas 117 Parsons Transportation Group, Inc. 118 Pasco, Inc. 119 Patrick Engineering Inc. 120 Peter Lindsay Schaudt Landscape Architecture 121 PG Engineering Associates, Inc. 122 Primera Engineers & Architects X X X 123 Rada Architects, Ltd. X X X 124 Raymond Professional Group, Inc. 125 Regina Webster & Associates, Inc. X X 126 Rheo Group, PC X X X 127 RJN Group, Inc.

Architecture and Engineering Pre-Qualified Consultants last update 7/9/2009 Certification Ethnicity Bolded Firms are Certified M/W/DBEs African Hispanic Native Asian Non- MBE WBE DBE American American American American Minority 128 RM Chin & Associates X X 129 Robert Gordon Associates 130 Robert H. Anderson & Associates, Inc. 131 Ross Barney Architects X X X 132 Roula Associates Architects, CHTD. X X 133 Rubinos & Mesia Engineers, Inc. X X 134 Seton Engineering 135 Shah Engineering, Inc. 136 Shaw Environment & Infrastructure 137 Singh & Associates, Inc. 138 Site Design Group X X 139 Skidmore, Owings & Merrill, LLP (SOM) 140 Sonoc Architects, Inc. 141 Soodan & Associates, Inc. X X 142 Spaan Tech, Inc. X X X X 143 Stanley Consultants, Inc. 144 STS Consultnats, Ltd. 145 STV Incorporated 146 TAMS Consultants, Inc. 147 Tania Consulting Services 148 TECMA Associates, Inc. X X X 149 Telvent Farradyne, Inc. 150 Teng & Associates, Inc. 151 Terra Engineering Ltd. X X 152 Terry Guen Design Associates X X X X 153 The Roderick Group 154 Thomas Engineering Group, LLC. 155 TranSmart Technologies, Inc. 156 TranSystems Corporation 157 Trotter Built Construction, Inc. 158 TY Lin International Great Lakes, Inc. 159 UBM, Inc.

Architecture and Engineering Pre-Qualified Consultants last update 7/9/2009 Certification Ethnicity Bolded Firms are Certified M/W/DBEs African Hispanic Native Asian Non- MBE WBE DBE American American American American Minority 160 University of Il. Urban Transportation Center 161 Urban Works Ltd. X X X X 162 URS Corporation d/b/a URS Corp. Americas 163 V3 Companies of Illinois, Ltd. 164 WHKS & Co. 165 Wight & Company 166 Wilbur Smith Associates 167 William Worn Architects 168 Wiss, Janney, Elsterner Associates, Inc. Total: 31 18 14 7 7 0 17 12

Professional Service Vendor Address List Consultant Address 1 2iM Group 203 N. Wabash Ste.. 804 2 ABNA Engineering 9901 S WeSte.rn Ave 3 Accurate Group, Inc. 101 Schelter Rd Ste.. B200 4 Alfred Benesch & Company 205 N Michigan Ave Ste. 2400 5 Altamanu Inc. 1700 W Irving Park Rd 6 Alvord, Burdick & Howson, LLC 125 S Wacker Dr 7 Entran (a/k/a American Consulting Engineers, LLC) 5440 N Cumberland 8 Apex Consulting Engineers, LLC 20 N Wacker Dr 9 APS Consulting, Inc. 5669 Angouleme Ln. 10 Architrave, Ltd. 213 W. Institute Pl. Ste.. 304 11 Ardmore Associates, LLC 33 N Dearborn St Ste. 1720 12 ARUP 35 E. Wacker Dr. Ste.. 1800 Atlas Engineering 3255 Techny Road 13 Avila Computer Services, Inc. 6201 W Touhy Ave Ste. 5 14 Baker Engineering, Inc. 8430 W Bryn Mawr Ave 15 Bauer Latoza Studio 2241 S Wabash Ave 16 Baxter & Woodman 39 S La Salle St Ste. 816 17 Beckley Engineering, Inc. 343 Danielle Rd 18 Bloom Consultants, LLC 600 W Fulton St Ste. 701 19 Bollinger, Lach & Associates, Inc. 8770 W Bryn Mawr Ave. Ste.. 1300 20 Bowman, Barrett & Associates 130 E Randolph St. Ste.. 2650 21 Branco Notch Engineering, Inc. 627 Maple 22 Bucher, Willis & Ratliff Corporation 903 East 104th Street Ste.. 900 23 Burns and McDonnell 210 S Clark Ste. 2235 24 Camiros 411 S Wells St. Ste. 400 25 Camp Dresser & McKee, Inc. 125 S Wacker Dr 26 CH2M Hill, Inc. 8501 W Higgins Rd Ste. 300 27 Christian Roge & Associates, Inc. 211 W Wacker Dr Ste. 600 28 Christopher B. Burke Engineering, Ltd. 9575 W Higgins Rd. Ste. 600 29 Ciorba Group, Inc. 5507 N Cumberland Ave. Ste. 402 30 Civiltech Engineering, Inc. 30 N La Salle St Ste. 2624 31 Clark Dietz, Inc. 118 S Clinton St Ste. 600 32 Clark Engineers, Inc. 303 E Wacker Dr. Ste. 2101 33 Collins Engineers, Inc. 123 N Wacker Dr. Ste. 300 34 Conservation Design Forum 375 W First St. 35 Cotter Consulting, Inc. 8150 S. Cass Ave. 36 Crawford, Murphy & Tilly, Inc. 70 W. Madison St. Ste. 460 37 CTE Consoer Townsend Envirodyne Engineers 303 E Wacker Dr. # 600 38 Daniel Loftus and Associates 4704 Main St. 39 Daniel P Coffey & Associates 233 S. Wacker Dr. Ste. 5750 40 David Mason & Associates, Ltd. 464 N. Milwaukee Ave. 41 DB Ste.rlin Consultants, Inc. 208 S. LaSalle St. # 1103 42 Delta Engineering, Inc. 111 W Jackson Blvd. Ste. 910 43 d'escoto, Inc. One E. Erie St., Ste. 520 44 Design Consulting Engineers 4740 W. Peterson Ave. 45 DeSte.fano & Partners 445 E. Illinois, Ste. 250 46 DLK Decker Legge Kemp Architect 329 W. 18Th St. Ste. 900 47 DLZ Corporation 70 West Madison Ste. 1400 48 DMJM Daniel, Mann, Johnson & Mendenhall 303 E Wacker Ste. 600

49 Douglas Hoerr Landscape Architecture, Inc. 850 W. Jackson Blvd. Ste. 800 50 DuSable, Inc. 300 W. Adams St. Ste. 517 51 Dynasty Group, Inc. 205 W. Wacker Dr., Ste. 1020 52 Earth Tech Environment & Infrastructure, Inc. 111 N. Canal St. Ste. 305 53 Edwards and Kelcey One N. Franklin Ste. 500 54 EJM Engineering 411 S Wells St. Ste. 800 55 Engineering Resources Associates, Inc. 10 S. Riverside Plaza, Ste. 1800 56 Environmental Design International, Inc. 33 W Monroe St. Ste. 1825 57 EpSte.in, A. and Sons International, Inc. 600 W. Fulton 58 ESI Consultants, Vice President 200 S Wacker Dr. 59 Everest Engineering Company 915 W. Liberty Dr. 60 Gandhi & Associates, Inc. 6035 N. Northwest Hwy., #306 61 Gannett Fleming, Inc. 222 South Riverside Plaza 62 GAS Graef, Anhalt, Schloemer & Associates 8501 W. Higgins Rd. 63 Globetrotters Engineering Corporation 300 S Wacker Dr. #200 64 Gonzalez Hasbrouck Architects 180 N. Wabash Ave. 65 GSG Consultants, Inc. 855 West Adams Ste. 200 66 Gustafson Guthrie Nichol Ltd. 1101 Alaskan Way Pier 55, Fl. 3 67 Hanson Professional Services, Inc. 1525 S. Sixth St. 68 Harbour Engineering, Inc. 215 W. Main St. 69 Hartshorne Plunkard, LTD 232 North Carpenter 70 Hayden Bulin Larson Design Group Ltd. 750 N. Franklin St., Ste. #205 71 HBM Engineering Group, LLC 4415 W. Harrison St., Ste.. 231 72 HDR Engineering, Inc. 8550 W Bryn Mawr Ave. 73 Hellmuth, Obata, Kassabaum, Inc. 60 E Van Buren St. 14th Fl. 74 Hitchcock Design Group 180 N Wacker Dr. Ste.. LL003 75 HNTB Corporation 111 North Canal Street 76 HOH Harry O. Hefter Associates, Inc 55 E. Jackson Ste.. 600 77 Homer L. Chastain & Associates, LLP 8609 W. Bryn Mawr Ste.. 204 78 HW Lochner 20 N Wacker Dr. Ste.. 1200 79 HWR, Inc. 1410 Chicago Ave., #602 80 IG Consulting, Inc. 300 East Marquardt Drive 81 Infrastructure Engineering, Inc. 33 W Monroe Ste.. 1540 82 Infrastructure Strategies, J.V. 29 S. LaSalle St. St.e 345 83 International Engineering Consultants, Inc. 4767 New Broad St. 84 Iteris, Inc. 335 S. Main St., Ste.. 10 85 Jackson Architects 651 W. Washington Ste.. 206 86 Jackson Mehdi, Inc. 407 South Dearborn St. #200 87 Jacobs Engineering Corp. 1 N. Franklin Ste. 500 88 Jacobs/Ryan Associates 1527 N. Sandburg Terrace 89 JJR. LLC 35 E Wacker Dr #2200 90 Johnson & Lasky Architects 180 N Michigan Ave 91 Kaltsouni Mehdi, Inc. 407 S. Dearborn St., Ste.. 200 92 KAM Engineering, Inc. 707-A Davis Rd., Ste.. 205 93 KCS Corporation 1350 Remington Rd., Ste.. G 94 Kenny Construction Company 2215 Sanders Rd. 95 Kimley-Horn and Associates, Inc. 205 W. Wacker Dr. Ste.. 2125 96 KLOA Kenig, Lindgren, O'Hara, Aboona, Inc. 9575 W. Higgins Rd Ste. 400 97 Knight E/A, Inc 221 N LaSalle St. Ste.. 300 99 Kudrna & Associates, Ltd 400 S. Green St. Ste.. 304 100 Land Design Collaborative, Inc. 220 S. State St. Ste.. 310 101 Legat Architects 651 W. Washington Ste. 1

102 Louis Berger & Associates, Inc. 412 Mt. Kemble Ave. 103 Louis Jones Enterprises, Inc. 333 N.. Michigan Ave 104 Macondo Corporation 21 W. Illinois St., Ste. 2000 105 MACTEC Engineering and Consulting, Inc. 8745 W. Higgins Road Ste.. 300 106 Marbach Brady & Weaver, Inc. 3220 Southview Drive 107 Mc Clier Corporation 401 E. Illinois St. 108 McDonough Associates, Inc. 130 E. Randolph Street., Ste..1000 109 Metro Transportation Group, Inc. 505 N. LaSalle Dr. #475 110 Milhouse Engineering and Construction, Inc. 60 E. Van Buren St. 111 Muller & Muller, Ltd. 700 N. Sanamon St. 112 MWH Energy and Infrastructure 175 W. Jasckson Blvd 113 Nakawatase, Wyns & Associates, Inc. 205 w. Wacker Drive 114 National Engineering Technology Corporation (Delcan) 650 E Algonquin Road Suite 104 115 NIA Architects, Inc. 1130 S. Wabash Ave 116 Omega & Associates 4225 Naperville Rd # 340 117 OWP&P Architects, Inc. 111 West Washington, Suite 2100 118 Parsons Brinkerhoff Quade and Douglas 230 W. Monroe 119 Parsons Transportation Group, Inc. 10 S. Riverside Plaza 120 Pasco, Inc. 216 S. Jefferson Street 121 Patrick Engineering Inc. 55 E. Monroe Street. 122 Peter Lindsay Schaudt Landscape Architecture 850 W. Jasckson Blvd 123 PG Engineering Associates, Inc. 4901 W Winona Ste. 2E 124 Primera Engineers & Architects 100S. Wacker Drive 125 Rada Architects, Ltd. 233 N Michigan Suire 2320 126 Raymond Professional Group, Inc. 550 W. Van Buren St 127 Regina WebSte.r & Associates, Inc. 6160 N. Cicero Ave 128 Rheo Group, PC 8131 West Catherine Ave. 129 RJN Group, Inc. 200 W. Front Street 130 RM Chin & Associates 500 W. 18th Street 131 Robert Gordon Associates 801 S. Plymouth Ct #1012 132 Robert H. Anderson & Associates, Inc. 220 W. River Drive 133 Ross Barney Architects 10 W Hubbard Street 134 Roula Associates Architects, CHTD. 400 N. State Street 135 Rubinos & Mesia Engineers, Inc. 200 S. Michigan 136 Seton Engineering 19 s. Bothwell Street 137 Shah Engineering, Inc. 1 IBM Plaza Ste. #3200 138 Shaw Environment & Infrastructure 444 N. Wells, Ste. 602 139 Singh & Associates, Inc. 300 W. Adams, Ste. 322 140 Site Design Group 888 S. Michigan Ste. 1100 141 Skidmore, Owings & Merrill, LLP (SOM) 224 S. Michigan, Ste. 1000 142 Sonoc Architects, Inc. 735 W. Division 143 Soodan & Associates, Inc. 100 N. LaSalle, Ste. 1800 144 Spaan Tech, Inc. 311 S. Wacker Dr., #2400 145 Stanley Consultants, Inc. 8501 W. Higgins, Ste. 730 146 STS Consultnats, Ltd. 111 W. Washington 147 STV Incorporated 200 West Monroe Street Ste. 1650 148 TAMS Consultants, Inc. 111 N. Canal, Ste. 305 149 Tania Consulting Services 232 W. Kathleen Dr. 150 TECMA Associates, Inc. 5519 N. Cumberland, Ste. 101 151 Telvent Farradyne, Inc. 1390 Piccard Drive 152 Teng & Associates, Inc. 205 N. Michigan Ave. 153 Terra Engineering Ltd. 225 W. Ohio, 4th Flr

154 Terry Guen Design Associates 521 W. Superior, Unit 327 155 The Roderick Group 921 W. Van Buren, Ste. 115 156 Thomas Engineering Group, LLC. 238 South Kenilworth Ave, Ste. 100 157 TranSmart Technologies, Inc. 2802 Coho St., Ste. 102 158 TranSystems Corporation 1051 Perimeter Dr., Ste. 1025 159 Trotter Built Construction, Inc. 8553 S. Kenwood 160 TY Lin International Great Lakes, Inc. 200 S Wacker Dr. Ste. 1400 161 UBM, Inc. 212 W. Van Buren 8th Flr 162 University of Il. Urban Transportation Center 412 S. Peoria, Ste. 340 163 Urban Works Ltd. 213 W. Institute, #710 164 URS Corporation d/b/a URS Corp. Americas 100 S. Wacker Drive Ste. 500 165 V3 Companies of Illinois, Ltd. 7325 Janes Avenue 166 WHKS & Co. 7018 Kingsmill Court 167 Wight & Company 2500 N. Frontage Road 168 Wilbur Smith Associates 801 Warrenville, Ste. 260 169 William Worn Architects 401 W. Superior, Ste.. 3-F 170 Wiss, Janney, Elstner Associates, Inc. 10 S. LaSalle St. Ste. 2600

City State Zip Phone Chicago IL 60601-2406 312 727-0914 Chicago IL 60643-1800 773 881-4788 Lincolnshire IL 60069 847 613-1100 Chicago IL 60601 312 565-2497 Chicago IL 60613-2559 773 528-7492 Chicago IL 60606-4424 312 236-9147 Chicago IL 60656-1452 773 314-1200 Chicago IL 60606-2806 312 977-0660 Hoffman Estates IL 60192 847 274-1620 Chicago IL 60610 312 642-2600 Chicago IL 60602-4075 312 578-1810 Chicago IL 60601 312 849-5610 Northbrook IL 60062 Chicago IL 60646-1119 773 763-6570 Chicago IL 60631-3473 708 667-5692 Chicago IL 60616-2109 312 567-1000 Chicago IL 60603-1643 312 578-0050 Matteson IL 60443-1359 708 720-0375 Chicago IL 60661-1155 312 876-9500 Chicago IL 60631 773 714-2840 Chicago IL 60601-6303 312 228-0100 Wilmette IL 60091 847 251-1949 Kansas City MO 64131-3451 816 363-0027 Chicago IL 60603 312 223-0920 Chicago IL 60607 312 922-9211 Chicago IL 60606-4424 312 346-5000 Chicago IL 60631-2812 773 693-3809 Chicago IL 60606-1387 312 372-2023 Des Plaines IL 60018-4920 847 823-0500 Chicago IL 60656 773 775-4809 Chicago IL 60602-3357 312 726-5910 Chicago IL 60661-5767 312 648-9900 Chicago IL 60601-5298 312 628-3886 Chicago IL 60606-1871 312 704-9300 Elmhurst IL 60126-2642 630 559-2000 Darien IL 60561 312 696-1200 Chicago IL 60602 312 357-2066 Chicago IL 60601 312 938-0300 Downers Grove IL 60515 630 434-8515 Chicago IL 60606 312 382-9898 Chicago IL 60654 312 884-5760 Chicago IL 60604 312 857-1006 Chicago IL 60604 312 377-7700 Chicago IL 60611 312 787-0707 Chicago IL 60646 773 283-8500 Chicago IL 60611 312 836-4321 Chicago IL 60616 312 322-0911 Chicago IL 60602 312 214-3161 Chicago IL 60601 312 321-6100

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Chicago IL 60654-3410 312 337-9145 Chicago IL 60607 773 350-7680 Oak Park IL 60302 708 533-1700 Madison WI 53713 608 268-3913 Schaumburg IL 60173-5053 847 605-9600 Chicago I 60619 773 375-6692 Chicago IL 60646 312 777-2900 Chicago IL 60607 312 939-0505 Chicago IL 60607 312 996-4820 Chicago IL 60610 312 202-1200 Chicago IL 60606 312 939-1000 Woodridge IL 60517-2256 312 419-1985 Springfield IL 62711-7387 217 483-9457 Darien IL 60515-2992 630 969-7000 Lisle IL 60532 630 434-8111 Chicago IL 60610 312 642-5587 Chicago IL 60694 312 372-0555