ADDENDUM NO. 1 CLARIFICATION NO. 1

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1 October 23, 2014 ADDENDUM NO. 1 TO Central Loop Bus Rapid Transit (BRT) CDOT PROJECT NO: B SPECIFICATION NO: RFQ: 4736 For which bids will be opened in the office of the Department of Procurement Services, Room 301, City Hall Chicago, Illinois 60602, on Tuesday, October 28, 2014 at 11:00 AM Chicago time. BIDDER WILL ACKNOWLEDGE RECEIPT OF THIS ADDENDUM IN THE SPACE PROVIDED ON THE PROPOSAL PAGE The Bid Opening Date has been postponed from October 28, 2014 to November 6, 2014 at 11:00 a.m. CLARIFICATION NO Question: What type of pavement markings are letters and symbols shown on the plans? Answer: General Note 44 has been added to Drawing No. 3 (G-2) to clarify. Pavement marking letters and symbols on Methyl Methacrylate (MMA) and High Friction Surface Treatment with Recycled Glass (HFST) surfaces shall be THERMOPLASTIC. All other pavement marking letters and symbols shall be PREFORMED THERMOPLASTIC unless otherwise noted in the plans or as directed by the Commissioner. 2. Question: Would the symbols shown on the plans be that of preformed thermoplastic with embedded symbols (as per plans) or would the coatings be omitted and just regular thermoplastic symbols be applied directly to the substrate? Answer: Preformed thermoplastic letters and symbols shall be placed on non-colored pavement and colored concrete. Letters and symbols placed within pavement colorized with preformed thermoplastic material shall be placed as an embedded application of preformed thermoplastic. A PREFORMED THERMOPLASTIC EMBEDDED LETTERS AND SYMBOLS DETAIL has been added to Drawing No. 188 (PMK-52) to clarify.

2 3. Question: Sheets C-4 and C-8 (in the Existing Conditions): it indicates SEE NOTE 4. However, these drawings do not have Note 4. Answer: Revise SEE NOTE 4 to read SEE NOTE Question: Item 238 Bus Shelter Bench Seat calls for the wood seat planking to be FSC Certified Ipe. To my knowledge, FSC Certified Ipe lumber in the size required for these benches (2x6) is not available. Can the FSC certification for the Ipe lumber be lifted? If FSC Certified Ipe is required for this project, please provide a source that can provide this lumber as we are unable to locate one. Answer: The FSC Certification requirement will NOT be lifted, but two additional species of wood have been added in this clarification as alternatives allowable with the approval of a sample by the Commissioner. 5. Question: Detail 1/S-18 - The detail seems to show a collar connection on the Rib that bolts to the 14" diameter pipe. No size of plate is given or weld type or size to the Rib. Please supply? Answer: The plate that is the collar between the rib and the 14 HSS should be 5x1/2. The weld of the 5x1/2 plate to the rib is a 3/8 shop fillet on both sides of the rib. The weld of the 5x1/2 plate to the 14 HSS is a 3/8 field fillet on both sides of the plate. 6. Question: Detail 1/S-18 - On the left side of the detail there is a note about slotted holes for adjustment. I understand about removing bolts and welding holes. Is this weld to be the weld to hold the rib into its final location? We have not found any further details if the collar its self should be welded to the 14" diameter pipe. Should the plug welding of holes be the final welding, how many holes do you required for connection? Answer: No. The welds to fill the erection holes are cosmetic only and do not serve a structural purpose. 7. Question: Detail 1/S-18 - In the detail on the far right shows (2) field welded splices to get rib fastened around the 14" diameter pipe. Should this be (3) locations? Not sure of the intent on how to only have (2) locations? Please advise. Answer: Yes, this should be 3 locations. 8. Question: For Item Canopy Steel, is an AISC certified required for either the canopy steel fabrication or erection? Answer: The Special Provision for Bus Shelter Canopy Structural Steel references IDOT Standard Specification Section 505. Per fabricators shall meet requirements of Article which requires all fabricators performing work on metal components to be certified under appropriate categories of the AISC.

3 9. Question: For Item Canopy Steel, please confirm if the canopy steel is galvanized and/or prime painted? If galvanized, is blasting required prior to the primer being applied? Answer: The canopy steel is painted using one of the paint systems (or equal) detailed in the specifications for Item 233 HIGH PERFORMANCE PAINT. Per the requirements surface preparation must meet the requirements of the paint system manufacturer. All coatings specified require zinc primer and blast cleaning. Steel is not to be galvanized. 10. Question: For Item Canopy Steel, please clarify if any the welds on the canopy require any finishing (grinding smooth) If so, please specify which welds. Answer: All visible welds on the canopy framing must be ground smooth. Appearance of the finished product is important and will be judged against the approved mock-up. 11. Question: For Item Canopy Steel, will an independent testing agency be required to inspect & approve either shop or field welds? If so, is one or two agencies required? Answer: A certificate from a laboratory of recognized standing certifying that all welding of all structural members was done under its inspection and meets all requirements of the contract drawings and specifications must be submitted. Certifications for all welders on the project must be submitted prior to beginning work. When all structural welding operations are completed, submit a certificate from the contractor responsible, showing that the fabrication and erection of the welded structure meet the requirements of the contract drawings and specifications. Weld inspection by more than one testing agency will not be required. 12. Question: For Item Canopy Steel, will a generic welding procedure specification (WPS) be sufficient or will project specific WPS be required? Answer: The weld procedure submitted must be acceptable to the Commissioner. 13. Question: For Item Canopy Steel, if acceptable, can the mock up of the canopy steel be used as part of the final product? Answer: The mock-up of the canopy structural steel may be incorporated into the finished work after acceptance and to be maintained as the basis for acceptance of other structural components. 14. Question: For Item 234 Metal Plate Assembly, the specification references IDOT section 505, please confirm that WPS, PQR's, CWI are not required for this item. Answer: Welding procedures for non-structural components can consist of general welding procedure and welder qualifications.

4 15. Question: For Item 234 Metal Plate Assembly, please confirm if the metal plate is to be steel as shown on A-13 or non-directional stainless steel as noted in the specification. Answer: Metal plate assembly is to be stainless steel with non-directional surface finish as specified. 16. Question: For Item 235 Canopy Drainage and Conduit Run, the specification references IDOT section 505, please confirm that WPS, PQR's, CWI are not required for this item. Answer: Welding procedures for non-structural components can consist of general welding procedure and welder qualifications. 17. Question: For Item 242 & 243 Railing, the specification references IDOT section 505, please confirm that WPS, PQR's, CWI are not required for this item. Answer: Welding procedures for non-structural components can consist of general welding procedure and welder qualifications. 18. Question: For Item 242 & 243 Railing, the specification references IDOT section 505, please specify if the stainless steel tube handrail joints are mechanical or welded. Answer: The handrail joints are welded and grinded smooth, all connections to the post are mechanical. 19. Question: Contract documents indicate removal/relocation of Pay-to-Park Boxes is BY OTHERS but fees/cost to be paid by CONTRACTOR. There are 25 boxes to be removed/relocated shown on the drawings. What fee/cost will be charged by the City or Chicago Parking Meters LLC to perform this work? Answer: The fee/cost is $1,000. for each Pay-to-Park box 20. Question: Contract documents indicate that the City will remove and reinstall any parking meter fees paid by CONTRACTOR in accordance with Municipal Code Is there ANY cost to be paid by the CONTRACTOR for lost revenue should existing parking meters be rendered unusable due to construction activities, such as during the paving of the parking lane? Answer: The contractor will NOT be assessed any charges for lost revenue should existing parking meters be rendered unusable due to construction activities. 21. Question: Item High Performance Paint specification on Page DS-199 requires that finish coat be spray applied in the field. This is a costly coating and the downtown location will be difficult to manage the tenting and preparation for a field applied coating. Will it be allowable to provide this coating in the shop and touch up as needed in the field?

5 Answer: The finish coat and touch up must be performed per manufacturer requirements. If shop coating is what is recommended by the manufacturer of the product chosen that meets the specification, then yes - the work can be performed in that manner. 22. The following drawings have been revised to improve clarity: Drawing No. 3 (G-2): Note 36 revised to include pay-to-park signage. Drawing No. 3 (G-2): Note 44 added to clarify pavement marking material for letters and symbols per Questions #1 and #2 (above) Drawing No. 39 (MOT-1): Removed (WEEKEND ONLY) from TWO-LANE OPERATION WITH CURBSIDE ACCESS ON CANAL heading. Related text has been revised clarify night working hours from 7 P.M. TO 6 A.M. Drawing No. 40 (MOT-2): Removed (WEEKEND OR from heading of the MOT Typical Section for Canal Street to read (NIGHT ONLY). Drawing No. 40 (MOT-2): Revised heading for MOT Typical Section for Madison Street to read TWO-LANE OPERATION... Drawing No. 41 (MOT-3): Replaced STAGE 2 heading for Madison Street at the upper right with TWO-LANE OPERATION. Drawing No. 42 (MOT-4): Revised sheet title from MAINTENANCE OF...WEEKEND ONLY to MAINTENANCE OF..WEEKEND OR NIGHT. Drawing No. 58 (C-4): Added 12 inch sewer lining callout. Drawing No. 86 (C-32): Removed bus shelter and relocation call-out was removed in the proposed panel. Added existing Divvy bike station (to remain) to proposed panel of drawing. Drawing No. 86 (C-32): Revised ROW line along the north curbline near the intersection of Monroe St and Clinton St in both existing and proposed panels. Drawing No. 86 (C-32): Deleted callout REMOVED BY OTHERS in Existing Panel related to Divvy bike station. Drawing No. 103 (C-49): Added dimensions for the depressed curb at Washington and Franklin BRT platform. Drawing No. 104 (C-50): Added dimensions for the depressed curb at Washington and LaSalle BRT platform. Drawing No. 104 (C-50): Added BRT platform dimension was added to Inset A of the Washington and LaSalle platform. Drawing No. 104 (C-50): Utility Coordination Notes 2,3, and 4 were updated to reflect the correct utility agency. Eliminated Utility Coordination Note 5. Drawing No. 105 (C-51): Utility Coordination Note 3 was revised to clarify agency as CITY ELECTRIC. Added Utility Coordination Note 4. Drawing No. 105 (C-51): Added dimensions for the depressed curb at Washington and Clark BRT platform. Drawing No. 106 (C-52): Added Utility Coordination Note 5. Drawing No. 106 (C-52): Added call-out for City Electric MH Utility Coordination (Note 5). Drawing No. 106 (C-52): Added dimensions for the depressed curb at Washington and State BRT platform. Drawing No. 106 (C-52): Added dimensions to clarify distance between the top of the ramp and the end of the railing at the west end of the BRT platform.

6 Drawing No. 106 (C-52): Clarified dimensions within Inset B for the proposed stairway at the east end of the Washington and State BRT platform. Drawing No. 107 (C-53): Added note to Inset B to identify the side curb at the east end of the Washington and Wabash island bus stop. Drawing No. 107 (C-53): Added typical dimension to Inset A for the depressed curb at Washington and Wabash island bus stop. Drawing No. 107 (C-53): Revised proposed railing location along the back of the Washington and Wabash island bus stop to be 0.5 from the back of curb, and proposed JCDecaux shelter to be 1.5 from the back of curb. Drawing No. 108 (C-54): Added dimensions to clarify the distance between the top of the ramp and the end of the railing on the platforms east and west end at the Madison and Franklin BRT platform. Drawing No. 108 (C-54): Revised hatching patterns to clarify depressed curb locations at the northwest corner of Madison and Franklin. Drawing No. 109 (C-55): Added dimensions to clarify the distance between the top of the ramp and the end of the railing on the platforms east and west end at the Madison and LaSalle BRT platform. Drawing No. 125 (C-71): Replace PLANTER BOX text with PLATFORM in Section B-B. Drawing No. 127 (C-73): Added JCDecaux shelter installation detail. Drawing No. 159 (PMK-23): Revised pavement markings and signing along east curbline of Canal Street. Drawing No. 168 (PMK-32): Added bus shelter to proposed panel along west curbline of Clinton Street. Drawing No. 168 (PMK-32): Added existing Divvy bike station (to remain) to proposed panel along west curbline of Clinton. Drawing No. 186 (PMK-50): Removed Megabus sign from proposed sign inventory. Drawing No. 188 (PMK-52): Added PREFORMED THERMOPLASTIC EMBEDDED LETTERS AND SYMBOLS DETAIL per Questions #1 and #2 (see page 1 above). Drawing No. 257 (S-01): Revised General note1. Drawing No. 264 (S-08): Foundation Sections and Details I Clarified 1/2 PLATE within Sections B and C. Drawing No. 265 (S-09): Foundation Sections and Details II Clarified proposed curb dimensions in Section H. Drawing No. 266 (S-10): Foundation Sections and Details III Revised note in Sections H, J, K. Drawing No. 267 (S-11): Foundation Sections and Details IV Revised note in Sections L, M. Revised Section L for proposed stairway at Washington and State BRT platform. Drawing No. 268 (S-12): Foundation Sections and Details V Revised note in Sections N, P, Q. Drawing No (S-23): Foundation Sections and Details III Revised notes for Typical Platform Layout. Drawing No. 284 (A-04): Platform Plan Washington at State - Removed / added notes, revised granite paver edge at stairs on 1/A-04: Platform Plan and added 4/A- 16 typical detail callout on 1/A-04: Platform Plan. Revised detail callout number on 2/A-04: Section - Bus Lane and 3/A-04: Section - Platform. Drawing No. 289 (A-09): Platform Plan Canal Street; Washington at Wabash - Revised section callouts on detail 1/A-09: Concrete Median Canal St. Revised curb height on 2/A-09 Section Bus Lane on Canal St. and 3/A-09 Section Platform at

7 Canal St. Revised callout on 2/A-09 Section Bus Lane at Canal St. Removed detail callout at 3/A-09 Section Platform at Canal St. Revised section callout, removed detail callout, and added bus shelter and dimension and rail and dimensions to rail on 1/A-09: Platform Plan Washington at Wabash. Revised detail callout number and added rail on 3/A-09: Section Platform. Revised detail numbering for Washington at Wabash platform. Drawing No. 292 (A-12): Bus Shelter Sections - Revised detail callout number, removed detail callout, and revised note on 1/A-12: Section. Revised detail section callout and revised note on 2/A-12: Section. Removed section callout number and revised note and detail on 3/A-12: Section. Revised detail/notes on 3/A-12: Section to show downspout pipe connections to clean out, trench drain or storm sewer. Added schematic detail/notes showing intersection of the rectangular downspout and FRP drain pipe. Drawing No. 293 (A-13): Bus Shelter Details Revised dimensions on details 1/A-13: Poster Frame Detail Elevation and detail 6/A-13: Structural Glass Wall Partial Elevation. Added detail 7/A-13 Structural Glass Wall Section. Details 2/A-13 through 9/A-13: revised with additional clarifications and dimensions. Detail 10/A-13 added. Drawing No. 294 (A-14): Washington Platform Sections and Details Revised sheet name to: Platform Sections and Details. Revised notes and added clarification on detail 1/A-14: Section, detail 3/A-14: Section at Platform, detail 4/A-14: Section at Ramp, detail 5/A-14: Section and detail 7/A-14: Section, detail 8/A-14: Section, and detail 9/A-14: Section. Added railings to detail 6/A-14: Section. Removed rail on detail 8/A-14: Section. Added typical platform drainage detail note and graphics to 2/A-14: Section. Drawing No. 296 (A-16): Platform Sections and Details Changed dimension and revised the line type graphic for the advertisement panel on detail 1/A-16: Section and 3/A-16: Section. Revised note on 2/A-16: Section. Replaced detail 4/A-16: Section with: Typ. Granite Paver Layout. Removed detail 5/A-16: Section and 7/A- 16: Section. Moved and added note on detail 6/A-16: Section. Added general note. Drawing No. 297 (A-17): Platform Sections and Details Added clarification on detail 1/A-17: Section and detail 5/A-17: Section. Revised notes and curb detail on detail 2/A-17: Section. Revised detail 3/A-17: Section and 4/A-17: Section. Revised / removed dimensions on detail 6/A-17: section, 7/A-17: Section, 8A/17: Section and 9/A-17: Section. Drawing No. 298(A-18): Architectural Details Details: 1A/A-18, 1B/A-18 and 1C/a- 18 replaced with detail 1/A-18: Railing Post Spacing Layout. Revised detail callout on 3/A-18: Section. Revised 4/A-18: Section. Details 2/A-18 through 10/A-18 rearranged. Drawing No. 299 (A-19): Architectural Details Revised anchor bolt sizes, layout and note on 9/A The following revisions have been made to Book 3 Detail Specifications, Standards, and Details to improve clarity: I-4, General Information, Agency Permits: Add the requirement for the contractor, as part of the contract, to comply with the attached Storm Water Pollution Prevention Plan (SWPPP) and to secure a National Pollutant Discharge Elimination System (NPDES) Permit No. ILR10 issued by the Illinois Environmental Protection Agency (IEPA) including all permit fees and coordination effort necessary.

8 DS-86, Item 82 STEEL PLATE EDGING: First sentence on page, revise 24 o.c. to 16 o.c. which resolves the conflict between specification and drawing S-09. DS-198, Item 233 HIGH PERFORMANCE PAINT: Revise second paragraph of description to: This Work shall consist of cleaning and preparation of ferrous metal and aluminum surfaces as indicated on plans; bus shelter structure, canopy drainage, conduit run and any miscellaneous metal items on platform, furnishing, application, and protection of the paint coatings. The top surface of canopy ribs directly in contact with glass canopy shall not be painted until coordination with the structural sealant manufacturer is done. DS-201, Item 234 MISCELLANEOUS METAL METAL PLATE ASSEMBLY: Revise second sentence under Finish to: Pickled and passivated process shall be used to remove all discoloration after fabrication, for the entire metal plate assembly, including but not limited to attachments and anchor plate, per ASTM A380 and ASTM A967. DS-204, Item 235 MISCELLANEOUS METAL CANOPY DRAINAGE AND CONDUIT RUN: Under Materials, add item Gutter Screen to paragraph (k) Metal Accessories and add new paragraph (m) FRP drain pipe. 4 FRP drain pipe from top of concrete bench, as shown on drawings, to trench drain or storm sewer line. DS-213, Item 238 BUS SHELTER BENCH SEAT: Under Materials add the following additional requirements to Seat: AWS - Premium grade (criteria to meet requirements for Honduras Mahogany) Clear All Heart. Alternate wood species FSC garapa and FSC cumaru species can be used with Commissioner's approval of samples provided by the Contractor. DS-227, Item 244 BOLLARD BARRICADE SYSTEM: Revise Description to: This Work shall consist of furnishing all material and equipment and all work necessary to construct the crash tested-crash certified illuminated high security bollard barricade system. DS-239, Item 248 DIGITAL/STATIC AD AND MESSAGING PANEL HOUSING: Under Materials add Cladding to subsection heading of Metal Plate and Shapes DS-242, Item 249: BUS TRACKER DIGITAL SIGNAGE: Under Materials, Outdoor Environmental add Flexible intake and exhaust vent hoses sized per manufacturers recommendations attached to louver for venting of display panel ATTACHMENTS The following files are attached and are part of this Clarification: 1. File named Addendum1-Clarification1 Revised Drawings. This file contains 36 pages of revised drawings. The revisions are detailed above 2. File named Addendum1-Clarification1 Revised Specifications. This file contains 9 pages of revised specifications. The revisions are detailed above 3. File named Addendum1-Clarification1 SWPPP. This file contains 8 pages.