ADDENDUM NO. 1

And Questions and Responses

OREGON DEPARTMENT OF AVIATION

MULINO STATE AIRPORT

Hangar and Waterline Project

Mulino, Oregon

TO: All Plan Holders DATE: May 16, 2026

BID NO: S-10900-00016730

1. NOTICE TO BIDDERS

A. This Addendum #1 modifies the Invitation to Bid only the extent indicated herein. All other areas not specifically mentioned or affected by this Addendum shall remain in full force. The following changes, additions, and/or deletions are hereby made to the Invitation to Bid, as fully and completely as if the same were fully set forth therein.

B. Requests for clarification, requests for change, and protests of this Addendum must be received by

ODAV by 2:00 P.M. (Pacific time) on May 19, 2026, or they will not be considered.

C. Bidders must acknowledge receipt of this Addendum in the space provided on the ITB, ATTACHMENT

A - FORM A-1 — BIDDER INFORMATION AND CERTIFICATIONS FORM.

2. REVISIONS TO INVITATION TO BID

The following sections in the ITB are revised as follows:

A. The Closing date and Public Opening of Bids for the project has been changed from May 19, 2026, to May 20, 2026.

The following sections in the ITB are revised as follows, with revisions shown in bold and underline:

A.3 SOLICITATION SCHEDULE

All dates listed are subject to change. All times listed in this ITB and OregonBuys are Pacific Standard Time (“PST”).

ACTIVITY SCHEDULE/DEADLINE

Voluntary Pre-Bid Conference See A.10, below

Deadline for solicitation protests, requests for change, requests for clarification, 7 calendar days prior to the Bid Closing requests for approval of equivalents, and questions

Deadline for Bid Submittal (“Closing”) May 20, 2026 at 2:00 PM (See also “Bid Opening Date” and time identified in OregonBuys for this ITB)

Public Opening Immediately after Bid Opening Date and time. (See “A.11 - Public Opening” below for details on attending Public Opening)

Posting of Intent to Award Within 5 Business Days after the Bid Closing

Deadline for Award Protest 7 calendar days after issuance of the Notice of Intent to Award. See ITB Section D.4

A.11 PUBLIC OPENING

The public Opening will occur immediately following the Closing, unless otherwise specified. Only the name of each Bidder and the Bid amounts will be read at the public Opening. Award decisions will not be made at the public Opening.

ODAV will hold the public Opening through electronic means. Interested parties may attend the public Opening for this solicitation electronically as follows: (It is attendee’s choice to use video or audio only.)

A Microsoft Teams meeting will be held on May 20, 2026, 2:00PM for the public Opening following the Closing. Be sure to have Microsoft Teams access available on your computer or mobile phone and follow the following link:

Join: https://teams.microsoft.com/meet/216543439016176?p=KxmPR6lgVKgimYJSSd Meeting ID: 216 543 439 016 176 Passcode: YA6gv7o2

Dial in by phone +1 971-277-1965,,131750069# United States, Portland Phone conference ID: 131 750 069#

B. Attachment A; FORM A-2 – PRICING FORM is deleted in its entirety and replaced with Attachment A, FORM A-2 as set forth below. Changes to the Pricing Form include:

i. Bid item 19, Spec Section: P-209 is changed to P-154

ii. Bid item 27, Item Description: 12" C900 Storm Pipe is changed to 10" C900 Storm Pipe, and

Estimated Quantity: 639 is changed to 851

iii. Prior Bid Item 43: 4’ x 4 Electrical Vault is omitted completely from Pricing form. Bid Item

43 is now Architecture and Permitting.

https://teams.microsoft.com/meet/216543439016176?p=KxmPR6lgVKgimYJSSd tel:+19712771965,,131750069

ATTACHMENT A

FORM A-2 — PRICING FORM

ITB/BID Solicitation no.: S-10900-00016730

Project Title: Mulino State Airport Hangar and Waterline Project

PRICING SUBMITTAL INSTRUCTIONS:

Bidder shall enter pricing and other required information for all Bid Items listed in this Pricing Form. If this Pricing Form is replaced by Addendum, Bidders shall use the Addendum form to provide pricing and other required information. If the Pricing Form is only modified by Addendum, Bidders shall follow the instructions in the Addendum for making modifications to the Pricing Form. Failure to supply the required information in the Pricing Form, as modified by subsequent Addenda, may result in Bid rejection as non-responsive.

BASE BID To include all Work described in the ITB, Plans, Specifications and any issued Addenda.

Bid Item Description Spec.

Section Unit Estimated Quantity Unit Price Extended Cost

Schedule A Base Bid – Hangar and Waterline Project 1 Mobilization C-105 LS 1 2 Temporary Traffic Control 01300 LS 1 3 Safety Plan Compliance Document 01300 LS 1 4 Construction Staking 01406 LS 1

5 Installation and Removal of Sediment Silt Fence C-102 LF 1,089

6 Installation and Removal of Inlet Protection C-102 EA 15

7 Installation and Removal of Concrete Washout C-102 LS 1

8 Installation and Removal of Construction Entrance C-102 EA 1

9 Installation and Removal of Trench Drain Protection C-102 EA 1

10 FOD Prevention Controls 01200 LS 1 11 Clearing and Grubbing P-151 SY 6,002 12 Pavement Removal P-101 SY 1,597 13 General Excavation - Taxiway P-152 CY 272 14 General Excavation - Detention Basin P-152 CY 1,967

15 Aggregate Base Course - Taxilane (6" Depth) P-209 CY 189

16 Scarify and Recompact Existing Aggregate Base P-209 SY 180

17 Subbase Material - Taxilane (12" Depth) P-154 CY 1,108

12" Stabilization (Includes Excavation, Aggregate Base, and Subgrade Geotextile Fabric)

SY 283

19 Subgrade Geotextile Fabric - Taxilane P-154 SY 1,132

20 Emulsified Asphalt Prime Coat P-602 GAL 393 21 Asphalt Concrete Pavement (ACP) P-403 TON 297

22 Pavement Marking, Striping (First Coat Application) P-620 SF 52

23 Pavement Marking, Striping (Second Coat Application) P-620 SF 52

24 Removal of Existing Hangar Power Conduit P-101 LS 1

25 4" C900 Storm Pipe D-701 LF 20 26 6" C900 Storm Pipe D-701 LF 44 27 10" C900 Storm Pipe D-701 LF 851

28 Stormwater Facility Outfall Rip Rap (Class 50), Including Geotextile D-751 CY 11

29 Trench Drain, Including Catch Basins & Concrete Encasement D-751 LF 185

30 Storm Cleanout, Including Backfill D-751 EA 9

31 Storm Backwater Valve, Including Backfill D-751 EA 2

32 Raise Structure to Grade D-751 EA 1

33 Reconnect Existing Catch Basin to New Storm Line D-751 EA 1

34 Waterline Crossing EA 1 35 Storm Catch Basin, Including Backfill D-751 EA 2 36 Stormwater Facility Over-Seed T-901 SY 2,183 37 Seeding T-901 SY 1,575 38 Stormwater Facility Growing Medium CY 550 39 Stormwater Facility Drainage Rock CY 367 40 Stormwater Facility Topsoil T-905 CY 167 41 Electrical Hangar Improvements 26 00 00 LS 1 42 3" Electrical Conduit 26 00 02 LF 273 43 Architecture and Permitting LS 1 44 Hangar Building 13 34 10 SF 10,017

Hangar Building PCC Slab & Foundation (including excavation and aggregate base)

13 34 10 SF 10,017

Total Bid Price

NOTE: Bid price is total contract price including contractor’s profit and overhead. Items not explicitly listed in the bid schedule above are considered incidental.

The undersigned understands that the State reserves the right to increase or decrease the above quantities at the same unit prices as shown or to remove items as necessary to meet budgetary constraints. The undersigned has carefully examined the Contract Documents and the site of the work, and agrees to furnish all necessary plant, labor, equipment, accessories, materials, permits, and perform all operations shown and specified in accordance with the Contract Documents for the price(s) set herein.

Bid submitted by:

(Legal Business Name)

(Authorized Representative Name) (Title)

(Authorized Representative Signature) (Date)

C. Attachment C; Technical Specifications, SECTION 13 34 10 T-HANGAR FABRICATED ENGINEERED STRUCTURE is deleted in its entirety and replaced with SECTION 13 34 10 T-HANGAR FABRICATED ENGINEERED STRUCTURE as set forth below.

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SECTION 13 34 10

T-HANGAR FABRICATED ENGINEERED STRUCTURE

PART 1 GENERAL

1.1 DESCRIPTION OF WORK

A. The work under this section shall consist of all services and materials necessary to construct a pre-engineered metal building appropriate for and intended for the storage of aircraft in individual bays in a nested “T” configuration. This document outlines the general requirements for the project only. The Contractor will be responsible to prepare a complete design for the building and submit that plan to the Owner for approval. All structural components of the building, including the building’s foundation, footing, and floor shall be stamped and sealed by an engineer licensed in the state the project is located.

The facility is generally described as a steel frame structure with a single or dual pitch roof, concrete floor, and eight aircraft hangars. The building will include electric lighting and electrical receptacles. The building shall consist of finished interior walls. No additional fixtures or interior improvements are required.

Utility connections required include an electrical service and stormwater roof drains.

The Contractor will be responsible for permit fees, connection fees, installation fees, and coordination with the appropriate utility provides for service installation.

All work shall be completed in conformance with Clackamas County and all other applicable building codes, as well as all manufacturers’ recommendations.

All materials and supplies used in this project must be in compliance with 49 USC §

50101, BABA and other related Made in America Laws, U.S. statutes, guidance, and

FAA policies.

1.2 PERMITS

A. The Contractor shall provide and be responsible for all permits and associated fees that may be required. At project completion, the Contractor shall furnish a final certificate to the Owner showing compliance with code requirements.

1.3 STANDARDS AND REFERENCES

A. 2025 Oregon Structural Specialty Code (OSSC)

B. 2025 Oregon Fire Code (OFC)

C. 2024 International Building Code (IBC)

D. 2024 International Fire Code (IFC)

E. 2024 Oregon Standard Specifications for Construction (ODOT)

F. 2023 Water Environment Services Stormwater Standards

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PART 2 SUBMITTALS

2.1 GENERAL

A. All submittals, shop drawings, and samples shall be provided for review and approval by the Owner.

2.2 STRUCTURAL DESIGN

A. Contractor to submit final structural design for review a minimum of 30 days prior to the beginning of construction. Submittals shall include, but are not limited to:

1. Structural design and foundation design drawings

2. Structural design and foundation design calculations.

3. Structural design and foundation design drawings and calculations shall be signed and sealed by a licensed engineer in the state of Oregon.

B. Shop Drawings and Product Submittals:

1. The terms “Submittal” and “Shop Drawing” in this Specification are defined as either product literature, samples of equipment, or actual Shop Drawings.

2. The Contractor shall submit an electronic PDF set of Shop Drawings and complete data covering each item or equipment or material.

3. Submittals shall be provided with a cover sheet with the names and addresses of the Project, Engineer, General Contractor, and the Subcontractor making the submittal. The cover sheet shall also contain the Specification section number applicable to the item or items submitted, the item nomenclature and description and a submittal number.

4. Submittals shall be provided with an index page with a listing of all data included in the submittal.

5. Submittals shall provide sufficient pictorial, descriptive, and diagrammatic data.

The submittals are to include, but not limited to dimensions, anchor details, structural members, concrete inserts, reinforcing requirements, and materials. All applicable information shall be clearly indicated with arrows or another approved method. Any non-applicable information shall be crossed out

6. Reports or information requiring certification shall be certified by an authorized officer of the manufacturer or testing agency.

C. Shop Drawing Submittal Review:

1. Shop Drawings will be reviewed for general conformance with the design concept of the project and general compliance with the information given in the Contract

Documents. Any action shown in review comments is subject to the requirements of the Contract Documents.

2. The submitting Contractor is responsible for: dimensions that shall be confirmed at the job site; fabrication processes and techniques of construction; coordination of his work with that of all other trades; and the satisfactory performance of the work.

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2.3 CODES, PERMITS AND FEES

A. General:

1. Comply with the most recently revised versions of applicable laws, rules, regulations, and ordinances of federal, state, and local utilities and authorities.

Where alterations to and deviations from the Contract Documents are required by said authority, report the requirements and secure approval before starting work.

Obtain all applicable permits, licenses and inspections and pay all fees charged by above authorities.

B. Code Design Basis:

1. The following codes and ordinances were used in the design of the project and shall be complied with during construction of the project.

a) Oregon Structural Specialty Code, most recent edition enforced.

b) Oregon Fire Code, most recent edition

c) International Building Code, most recent edition enforced.

d) International Fire Code, most recent edition enforced.

e) Oregon Administrative Rules (OAR).

f) Mulino State Airport

g) Oregon Department of Aviation (ODAV)

C. Precedence:

Where Contract Document requirements are in excess of Code requirements and are permitted under the Code, the Contract Documents shall govern. None of the terms or provisions of the drawings or specification shall be construed as waiving any of the rules, regulations or requirements of these authorities. In the event of conflict between the Contract Documents and the local enforcing authority, the latter shall rule. Any modifications resulting there from shall be made without additional cost to the Owner or Engineer. This Contractor shall report any such modifications to the

Engineer and secure his approval before proceeding.

PART 3 SUBMITTALS

3.1 BUILDING

A. The building shall consist of a Pre-Engineered Metal Building (PEMB) system designed with the following minimum characteristics:

1. The building shall be divided by walls into eight (8) individual aircraft hangars.

Fire walls shall be installed as required by the OSSC, OFC, IBC, and IFC.

Through penetrations of fire rated walls and barriers shall comply with OFC and

IFC.

2. The building shall be designed in accordance with 2025 OSSC. Design roof load to meet 2025 OSSC.

3. Building exterior siding and roofing materials shall be 26 ga. (minimum) steel.

Siding and roofing shall be factory painted to match Owner color standards

(blue).

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4. Each aircraft hangar’s interior dimensions shall consist of a minimum 42’ by 20’ wing box and a 21’ by 13’ minimum tail box.

5. Building shall have a 10-inch roof overhang around the entire roof perimeter.

6. Interior finishes on ceilings and exterior walls shall be durable and pre-painted.

Paint color shall be a factory standard white color.

7. Building ceiling shall be insulated to a minimum of R-13. Insulation shall be rigid foam with vapor barrier facing towards the interior of the building or approved equivalent.

8. The building exterior walls shall be insulated with rigid foam to a minimum of R-

13. Installation shall have a vapor barrier installed on interior of building.

9. Interior hangar divider walls shall be sheeted with drywall, finished, and painted.

10. The building footings and foundation shall be designed and sealed by a licensed engineer. Foundation shall be constructed for the appropriate soil conditions and design loads under applicable codes.

11. The building floor shall be designed and sealed by a licensed engineer and shall be finished concrete, at a minimum six inches thick. Concrete floor shall be constructed on 2 inches of crushed aggregate base over 10 inch layer of free draining 1-1/2 to ¾ angular rock. Floor shall consist of necessary reinforcement per the structural engineer’s design. Construction and expansion joints shall be installed and spaced as necessary but shall not exceed 15 feet maximum.

12. Floor shall be sloped to drain toward and out of each sectional door. Minimum floor slope shall be 0.5% or as noted on the site plan.

13. The building floor shall be constructed to the design elevations noted on the site plan and shall be within +1/2 inch and -0 inch of the specified elevation.

3.2 BUILDING DOORS

A. Hangar Door:

1. Two (2) manual sliding aircraft access doors shall be provided to each aircraft hangar. Each door shall be not less than 22 feet wide and have a clear opening at least 12 feet in height. Doors shall be lockable and rated for commercial use.

2. One (1) exterior personnel door shall be provided.

B. Oversized Hangars:

1. One (1) manual roll up door not less than 8 feet wide and have a clear opening at least 7 feet. Door shall be lockable and rated for commercial use.

2. One (1) exterior personnel door shall be provided.

3.3 ELECTRICAL

A. Electrical to be per the requirements shown on the electrical drawings.

3.4 CONCRETE

A. Concrete to meet ODOT Commercial Grade Concrete, Section 00440 of the 2024

Oregon Standard Specifications for Construction. Building foundation reinforcing

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Standard Specifications for Construction.

3.5 CRUSHED AGGREGATE

A. Crushed aggregate for the building foundation and floor shall be in accordance with

ODOT Base Aggregate, Section 02630 of the 2024 Oregon Standard Specifications for Construction. Free draining crushed rock shall meet the Open-Graded Aggregate

Section 02630.11.

PART 4 EXECUTION

4.1 GENERAL

A. Prior to all work of this Section, the Contractor shall become thoroughly familiar with the site, the site conditions and all portions of the work contained within this Section.

The Contractor shall be responsible for removing and disposing of all items associated with demolition. All materials removed by the Contractor shall become the property of the Contractor. The Contractor shall be responsible for disposing of removed materials at an off-site disposal area

4.2 BUILDING LAYOUT

A. Prior to construction, the Contractor shall stake a baseline for use in constructing the building. This baseline will establish the location of building corners, utility connections, etc. This baseline shall be inspected and approved by the Owner prior to beginning construction. Contractor to request inspection a minimum of 48 hours in advance with the Owner. Once established, no changes to the baseline are permitted without approval from the Engineer and Owner.

4.3 EXCAVATION AND EMBANKMENT

A. Excavate and Grade subgrade to design elevations to a minimum of 1 foot outside of the foundation footprint. Excavation material to be hauled off the airport.

B. Prior to backfilling, subgrade to be evaluated by qualified geotechnical engineer.

Areas of loose or disturbed soil should be moisture conditioned and compacted per

Item P-152.

C. Free draining crushed rock to be placed in one 10-inch lift and compacted to 95% of the maximum dry density, as determined by ASTM D698.

D. Crushed aggregate base to be placed in one 2-inch lift and compacted to 95% of the maximum dry density, as determined by ASTM D698.

4.4 BUILDING ELECTRICAL

A. A new electrical service shall be installed on the building to supply needed power per

Electrical drawings. The Contractor shall be responsible for all coordination with utility providers, applications, permits, and fees for a new electrical service to the structure.

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4.5 BULDING ROOF DRAINS

A. The Contractor shall be responsible for new stormwater roof drains for the building.

Contractor to ensure roof drains connect to site stormwater roof drain laterals.

4.6 BUILDING FOUNDATION DRAINS

A. The Contractor shall be responsible for installing new foundation drains along the building perimeter and connecting to the site storm at backwater valves.

4.7 SITE PROTECTION AND SECURITY

A. It shall be the responsibility of the Contractor to maintain a secure and safe working environment within the limits of construction, continuously throughout the duration of the project. Contractor to coordinate with RPR and Owner for security needs.

PART 5 MEASUREMENT

5.1 ARCHITECURAL AND PERMITTING

A. Measurement for payment shall be made on a lump sum basis for all elements of the structure to include: design and permit approval of the building with local jurisdiction.

5.2 T-HANGAR SLAB AND FOUNDATION

A. Measurement for payment shall be made on a square footage basis for all elements of the structure to include: mobilization, excavation, embankment, backfill, site preparation, floor slab, foundation, and foundation drainage.

5.3 T-HANGAR BUILDING

A. Measurement for payment shall be made on a square footage basis for all elements of the structure to include: building frame, siding, roof, hangar sliding doors, pedestrian doors, roll up doors, roof drains, and all other tasks not specifically mentioned below.

5.4 OTHER ITEMS

A. No measurement for payment shall be made for any other items of work necessary to complete the project. All other items will be considered incidental to the building work item.

PART 6 PAYMENT

6.1 ARCHITECURAL AND PERMITTING

A. Payment shall be made on a lump sum bid item for the architectural design and permit approval. Partial payments will be allowed as follow:

1. Submittal of architectural and structural design to the Engineer and Owner, 25%

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2. Submittal or architectural and structural design to the local jurisdiction, an additional 25%

3. Permit approval from local jurisdiction, final 50%

6.2 T-HANGAR SLAB AND FOUNDATION

A. Payment shall be made on a square footage bid item for the work performed by the

Contractor and accepted by the Engineer. This price shall be full compensation for furnishing all materials and for all preparation, and for all labor, equipment, tools, and incidentals necessary to complete this item. Percentage progress payments shall be made proportionate to the progress of the work. The Engineer’s determination of percent complete of services provided by the Contractor shall be the final assessment for payment.

6.3 T-HANGAR BUILDING

A. Payment shall be made on a square footage bid item for the work performed by the

Contractor and accepted by the Engineer. This price shall be full compensation for furnishing all materials and for all preparation, and for all labor, equipment, tools, and incidentals necessary to complete this item. Percentage progress payments shall be made proportionate to the progress of the work. The Engineer’s determination of percent complete of services provided by the Contractor shall be the final assessment for payment

END OF SECTION 13 34 10

END OF ADDENDUM

Alex Thomas Planning, Policy, & Programs Manager Oregon Department of Aviation

(971) 375-2357

QUESTIONS AND RESPONSES

The following questions have been received by ODAV and responses are provided for clarification purposes.

These responses are intended to clarify the ITB requirements and do not otherwise modify the ITB. Bidders are responsible for reviewing all issued clarifications.

Q1: Please identify all classified hazardous locations (this will determine if there is any class 1 div 1 and that requires explosion proof boxes, and most likely rigid conduit. Class 1 div will require MC-Hl cable if exposed?

A1: The T Hangar is only to be used for aircraft storage and will not house fuel or other classified materials.

Maintenance and personal belongings within the hangar shall be limited. All wiring methods and installations shall meet the requirements of NFPA 70 Article 513. The installation shall limit to the greatest extent feasible, any or all requirement for classified listed equipment.

Q2: Please confirm whether standard fire alarm wiring methods are acceptable including: exposed MC cable in the hanger?

A2: All approved fire alarm wiring methods meeting the AHJ requirements are acceptable. Coordinate with the AHJ code requirements for details.

Q3: Please confirm whether a foam suppression system is required per NFPA 409 and local code requirements?

A3: A fire protection system (fire sprinkler or foam suppression) is not required for the hangar.

Q4: Are there specifications for the fire alarm system or will there be any?

A4: The Fire alarm is to meet Section 3.10 of Specification 26 00 02.

Q5: Will there be any dimensional drawings put out before bid date or fire protection sprinkler drawings?

A5: Dimensional layout of the hangar is provided on Sheet C-17. The hangar will not require fire sprinkler protection.

Q6: Reference specification 13 34 10.3.1.A.9 – This spec calls for walls to be sheeted with drywall, finished and painted. The prior item 6 calls for interior finishes on walls and ceiling to be pre-painted 29-gauge sheet steel. Please provide confirmation on the required interior finish of the T hangar.

A6: The inside/backside of the exterior wall and ceiling is to be pre-painted, prior to the installation of rigid foam insulation and vapor barrier. Contractor may submit a revised finish for the ceiling and inside of exterior walls post bid. Interior walls separating hangars are to be drywall, finished, and painted. Contractor may submit a substitution request for a revised interior wall finish post bid.

Q7: Reference specification 13 34 10.3.2.A.1 – This spec calls for manual sliding doors to be 22’ wide by 14’ high. Most manufacturers don’t recommend this and would suggest providing an electric top lifting bifold door if R-13 insulation is required for the buildings. Note when the door to one hangar is open it will block the access to the adjacent hanger. Please confirm if the design intent is to provide un-insulated sliding doors or confirm the intent is to provide electric top lifting bifold doors.

A7: Bifold doors were considered for the project, however the doors intrude into the taxilane object free area (TLOFA). As a result, manual sliding doors were selected to match the existing hangars on the airport. It is understood when one hangar has its doors open it will block access to the adjacent hangars and the doors will need to be uninsulated to slide.

Q8: Are the interior divider walls 2-hour fire rating?

A8: The interior walls are not to be 2-hour rated fire walls at this time.

Q9: Are the PEMB exterior walls on the interior side including the ceiling- "white metal liner panels by PEMB"?

Or GYP to achieve a rating?

A9: The interior side of the 26-gauge ceiling and exterior walls are to be pre-painted prior to installation of rigid foam insulation and vapor barrier.

Q10: Bid list showing 12” C900 Storm Pipe. On plans Calls for 10” C900 storm pipe. No 12” C900 noted on the plans. Assuming 10” C900 for the project but looking for clarification?

A10: The Bid Schedule List has been revised to 10” C900 Storm Pipe under Form A-2, Addendum 01.

Q11: Please provide clarification on the total length of 10” C900 pipe. The bid list calls for 639 ft of 10” C900, and plan Sheets C-09 and C-10 appear to indicate more 10” storm line.

A11: The total length of 10” C900 storm pipe is 851 ft and has been updated in the revised Bid Schedule List under Form A-2, Addendum 01.

Q12: Please provide specification for concrete finish requirements and vapor barrier requirements.

A12: Concrete shall have a troweled, smooth finish or equivalent. Insulation vapor barrier to be low-perm vapor barrier (Class I). Contractor may submit a substitution request for a revised vapor barrier post bid.

Q13: Do exterior walls require 4 layers of 5/8 gypsum (drywall) and fire tape? Please provide fire wall detail for exterior walls.

A13: The exterior wall does not require drywall and fire tape at this time.

Q14: Are the interior walls to have 4” steel stud or 8” girts, with 2 layers of 5/8 gypsum (drywall) and fire tape?

Please provide details.

A14: Interior walls can be either 4” steel studs or 8” girts with a single layer of drywall on each side of the interior wall. No fire tape is required. Walls are to be taped, textured, and painted white.

Q15: Is the ceiling to have white scrim over insulation?

A15: The ceiling and exterior walls are to have a vapor barrier facing the interior of the building per 13 34 10.3.1.A.7.

Q16: Does the 10” roof overhang require a soffit?

A16: No, a soffit is not required for the 10” roof overhang.

Q17: Are PBR (Liner panels) required on the ceiling?

A17: PBR (liner panels) are not required on the ceiling or exterior walls.

Q18: Confirm typical R13 PEMB blanket insulation is acceptable for both ceiling and walls.

A18: Please bid with rigid foam insulation and vapor barrier for both the ceiling and exterior walls per specification 13 34 10. Contractor may submit a substitution request for a revised insulation and vapor barrier post bid.

Q19: Please provide clarification on the specifications 13 34 10.3.1.A.6 and 13 34 10.3.1.A.9. It calls for 29-gauge steel liner panels and drywall. Is it a combination of the two? Drywall on walls for fire rating with liner panels on ceiling and over walls instead of paint?

A19: The interior side of the 26-gauge ceiling and exterior walls are to be pre-painted prior to installation of rigid foam insulation and vapor barrier. 29-gauge panels are not required. See updated 13 34 10 specification.

Q20: Suggest 26-gauge liner panels on ceiling.

A20: The interior side of the 26-gauge ceiling is to be pre-painted prior to installation of rigid foam insulation and vapor barrier.

Q21: Suggest 4 layers of 5/8 gypsum (drywall) and fire tape for a 2-hour rating on exterior walls, with 26-gauge liner panes up to 8 feet and paint above.

A21: The interior side of the 26-gauge exterior walls are to be pre-painted prior to installation of rigid foam insulation and vapor barrier. Exterior walls are not to be drywalled or fire taped, as they do not require a fire rating at this time.

Q22: Suggest doing 2 layers of 5/8 gypsum (drywall) and fire tape for a 2-hour rating on interior walls, with 26-gauge liner panes up to 8 feet and paint above.

A22: The interior hangar separation/partition walls are to have a single layer of drywall on each side of the interior wall. No fire tape is required. Walls are to be taped, textured, and painted white. Interior partition walls are not required to have a fire rating at this time

Q23: Is it acceptable to frame the interior partition walls with metal stud walls? Do you have any details regarding the fire rating for these walls?

A23: The interior hangar separation/partition walls can be metal stud walls with a single layer of drywall on each side of the interior wall. No fire tape is required. Walls are to be taped, textured, and painted white. Interior partition walls are not required to have a fire rating at this time.

Q24: Is MBI an acceptable substitute to the rigid foam insulation for the ceiling and exterior walls?

A24: Please bid with rigid foam insulation and vapor barrier for both the ceiling and exterior walls per specification 13 34 10. Contractor may submit a substitution request for revised insulation and vapor barrier post bid.

Q25: The safety plan notes that the Contractor is responsible for airport security. Please confirm that the contractor is only responsible for the security of the secondary access gate - and not responsible for providing security at the main airport gate?

A25: The airport will remain active during the construction of the hangar. The main entry from S Airport Rd is open during normal business hours for the skydiving business. If construction traffic is to be routed through the taxilanes and out the main entrance, flagging and escorting will be needed to maintain safety with the airport operations area (AOA). Full-time airport security is not required at the main entrance gate. Contractor is to provide security at the entrance from S Mulino Rd during construction.

Q26: Please confirm a 1200C permit will be provided.

A26: A 1200-C erosion control permit will be provided by the Owner. The Contractor does not need to apply for this permit.

Q27: Please confirm interior finishes. Is the ceiling open to the structure?

A27: The interior side of the 26-gauge ceiling and exterior walls are to be pre-painted prior to installation of rigid foam insulation and vapor barrier. Contractor may submit a revised finish for the ceiling post bid.

Q28: Please confirm the intended size is 41’-6” x 12’ clear for the hangar doors. This matches the plan, however the specifications conflict. Are the doors intended to be bifold or rolling?

A28: The 41’-6” x 12’ clear is the minimum opening to the hangar. Specification 13 34 10.3.2.A.1 has been updated to reflect this minimum clear opening. The doors are intended to be manual rolling (sliding) doors.

Q29: Are PEMB factory colors acceptable for all light gauge steel (selected after award)? This may not match existing (faded) colors exactly.

A29: Factory colors from the PEMB will be acceptable for light gauge steel.

Q30: What is the intent to address long PEMB lead times? Is the following schedule acceptable?

• Q3 2026 – Design

• Q4 2026/Q1 2024 – PEMB lead times

• Q2/Q3 2027 – Construction

A30: During Phase 0 (architectural and permitting), Owner will review the building package prior to permit submittal and will require a schedule at that time for procurement of materials and long lead items. As discussed during the Pre-Bid conference, the waterline improvements contracted separate from this project, will need to be constructed and accepted by the water district and fire department before construction can begin on the hangar project. If PEMB lead times exceed the time required for Phase 0, exceed the time required for the separate water line project construction to be completed, and/or weather conditions would have significant negative effect on the construction process or final product, schedule flexibility will be allowed. This flexibility may include delaying some or all elements of construction to spring and/or summer of 2027.

Q31: Do we need to hire our own geotechnical report for permitting processes or is the GRI report intended to be used?

A31: The GRI geotechnical report may be utilized for the permitting process.

Q32: Please confirm the owner will carry the costs for all 3rd party and geotechnical inspections?

A32: The Owner will retain the GRI (geotechnical engineer of record) for limited QA site inspections and Carlson Testing for QA testing. Contractor will be responsible for QC testing per specifications.

Q33: Please confirm this project does not include water line improvements within the public roads and along the edges of the airport.

A33: This project does not include water line improvements within S Mulino Rd, S Landing Way, S Airport Rd, east of the airport segmented circle, or those within S Darnell. Those improvements are to be completed under a separate project. They are included on Sheet C-04 to assist with the permitting process by indicating for the building department and fire marshal that the waterline upgrades in their proposed location will provide adequate fire flow protection for the proposed hangar.