Addendum No. 1 STMGID ARROWCREEK BPS MAIN. PWP Bid No.: WA TMWA Capital Project No.: April 16, 2018 QUESTIONS AND RESPONSES

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1 Addendum No. 1 STMGID ARROWCREEK BPS MAIN PWP Bid No.: WA TMWA Capital Project No.: April 16, 2018 The following information, clarifications, changes and modifications are by reference incorporated into the bid documents for the above referenced project. Any work item or contract provision not changed or modified will remain in full force and effect. The bid date and time and construction schedule remain the same. QUESTIONS AND RESPONSES Question No. 1: I m contacting you in reference to the STMGID Arrowcreek BPS Main project and I was trying to determine the installation method and underground depth of the 8,078 LF of DIP pipe being installed in the project? Response to Question No. 1: Conventional trench excavation, pipe installation and backfill techniques are envisioned. Burial depth is as presented on the Drawings. Question No. 2: How strict will the start date of May 9 th be? Is there any room to push the start date back a week or two? Response to Question No. 2: It is anticipated that the Notice to Proceed will be issued at the listed preconstruction meeting tentatively scheduled for 9 May There is no current plan to delay the Work. Question No. 3: Bid Items 4 and 5 in your bid book both have the identical description. Please explain the difference between the two items or correct one of the items to clearly show what your intention is. Response to Question No. 3 Item 4 quantities are for unrestrained pipe. This correction will be provided on the revised Bid Schedule. BIDDERS ARE INSTRUCTED TO REPLACE PAGE 4 OF THE BID SCHEDULE WITH ATTACHMENT A. Question No. 4 In our experience with past projects in the vicinity of this project s work area, we have encountered large rocks with the area. Normally TMWA has a Rock Excavation line item, but there is not one listed in the bid schedule for this project. Is it possible to add a Rock Excavation Line item to the Bid schedule? If not, are we to account for such rocks throughout the pipeline bid items? Response to Question No. 4: A line item for Rock Excavation has been added to the revised Bid Schedule. This line item will be used, in combination, with the definition for Rock Excavation provided

2 in Section 4.06A (1) of the General Conditions. Quantities provided on the Bid Schedule reflect one (1) cubic yard (CY) of rock excavation per lineal foot of trench for approximately fifty (50) percent of the proposed pipeline installation. BIDDERS ARE INSTRUCTED TO REPLACE PAGE 5 OF THE BID SCHEDULE WITH ATTACHMENT B. Question No. 5: The Geotechnical report that was provided included a number of boring logs but there are no test pit logs. Did you conduct any test pits to show the contactors what real trench conditions exist? If so, please provide the test pit logs. Response to Question No. 5: All information gathered during the Wood Rodgers field investigations is provided in the report. No additional information was obtained. Question No. 6: On page 6, it asks for a Business License Number. Can you please specify which Business License you would like? Is it a Nevada State Business License, Washoe County or City of Reno? Response to Question No. 6: Please include the State of Nevada Business License information. While it is not required at this time, TMWA would welcome receiving copies of the local jurisdictional business licenses associated with the location of the project. Question No. 7: On page 10, do you want our e-mod from 2013 & 2014? Seems like this is very old data. Response to Question No. 7: Bidders are requested to change/strike through the e-mod from 2013 and 2014 and replace it with 2016 and Question No. 8: On Page 13, it states the completed affidavit must be submitted with the bid in order for the response to be considered. Can we submit this form within 2 hours after the bid opening? Response to Question No. 8: Yes, as discussed previously, Nevada Revised Statute would dictate, and it does allow for the 2-hour after bid opening. QUESTION CUT-OFF DATE: April 18, 2018 END OF ADDENDUM NO. 1

3 ATTACHMENT A REVISED BID SCHEDULE PAGE 4 DATED

4 BID SCHEDULES (Cont) Description Scheduled Unit Total Value Unit Price Price in CL 250 Polywrapped Ductile Iron Pipe 4778 LF w/unrestrained joints. Including all saw cutting, concrete removal, excavation, off-haul, bedding, backfill and traffic control as necessary for a complete in-place installation in CL 250 Polywrapped Ductile Iron Pipe 1102 LF w/restrained joints. Including all saw cutting, concrete removal, excavation, off-haul, bedding, backfill and traffic control as necessary for a complete in-place installation in CL 300 Polywrapped Ductile Iron Pipe 716 LF w/restrained unrestrained joints. Including all saw cutting, concrete removal, excavation, off-haul, bedding, backfill and traffic control as necessary for a complete in-place installation in CL 300 Polywrapped Ductile Iron Pipe 1510 LF w/restrained joints. Including all saw cutting, concrete removal, excavation, off-haul, bedding, backfill and traffic control as necessary for a complete in-place installation. 6. Linestop installation per Detail 6/D4 1 EA 7. Installation of 4-in Air/Vac Assembly per Detail 1/D3 8. Install of 2-in Service Saddle Flush Assembly per Detail 2/D2 3 EA 6 EA 9. Installation of Connection Detail 1/D4 1 EA 10. Installation of Connection Detail 2/D4 1 EA 11. Concrete Curb per Detail 4/D LF 12. Concrete Curb & Gutter per Detail 3/D LF 13. Concrete Curb & Gutter per Detail R-109/D5 8 LF ft wide Concrete Sidewalk per Detail 5/D1 288 SF ft wide Concrete Sidewalk per Detail 5/D SF ft wide Concrete Sidewalk per Detail R- 104A/D5 32 SF 17. Tee & Valve per Detail 3/D2 1 EA 18. Concrete Driveway Entrance 1 EA 19. Temporary A.C. Patch - Washoe County R.O.W SF Master Form Invitation to Bid.rev Page 4

5 ATTACHMENT B REVISED BID SCHEDULE PAGE 5 DATED

6 BID SCHEDULES (Cont) Description Scheduled Unit Total Value Unit Price Price 20. Permanent A.C. Patch - Washoe County R.O.W SF 21. Temporary A.C. Patch - City of Reno R.O.W. 180 SF 22. Permanent A.C. Patch - City of Reno R.O.W. 360 SF 23. Type III Slurry - Washoe County R.O.W SF 24. Concrete ADA Sidewalk per Detail 5/D1 156 SF in Resilient Seat Gate Valve 3 EA in Steel Casing 3/8-in Thick 40 LF 27. Remove/Replace Concrete Retaining Wall 30 LF 28. Remove/Replace Trench Drain 8 LF 29. Placement & Removal of Concrete K-Rail 610 LF 30. Concrete Encasement of Pipe 40 LF 31. Lean Concrete Slurry Backfill 700 CY 32. Guardrail Removal/Replacement 545 LF 33. Rock Excavation encountered during trenching operations. Quantity based on one (1) cubic yard of rock excavation, per lineal foot of installed pipeline, for approximately one-half of the project. 34. Demobilization and clean-up of staging areas, general construction debris, replacement and/or repair of all damages caused by construction operations related to the Work. TOTAL BID PRICE 4000 CY 1 LS Total Bid Price Written in Words: Notes: (None) Master Form Invitation to Bid.rev Page 5