Addendum 1 - PW1707-25.pdf

PW1707-25 - ITB - Construction and Other Site Improvements at Various Radio Communications Sites for the Marion County Radio Project Page 1 of 8

ADDENDUM #1

TO THE

INVITATION TO BID

PW1707-25 - ITB - CONSTRUCTION AND OTHER SITE IMPROVEMENTS AT

VARIOUS RADIO COMMUNICATIONS SITES FOR THE MARION COUNTY RADIO

PROJECT

ISSUED ON 10/8/2025 8:00:00 AM

The following information in this addendum, hereby becomes part of the Invitation To Bid. It is essential that all prospective Offerors note the content of this Addendum.

A. DATE EXTENSION:

1. Cover Page:

a. Bid Opening: October 30, 2025 November 6, 2025.

2. Section 1.4 Time, Place and Methods of Receiving Bids:

a. Submit electronic bids as specified in Special Provisions 00120.45 by 2:00 p.m. on October 30, 2025 November 6, 2025.

B. TABLE OF CONTENTS, PLANS AND DRAWINGS..............................ATTACHMENT B

1. ITB – Page iv:

Remove the following: U-5 SOLAR PV ARRAY DETAILS V

HOUSE MOUNTAIN

T-1 COVER SHEET

V-1 EXISTING CONDITIONS

EX-1 DEMOLITION PLAN

G-1 GENERAL NOTES

ER-1 GRADING & EROSION CONTROL PLAN

ER-2 GRADING & EROSION CONTROL PLAN DETAILS

C-1 OVERALL SITE PLAN

C-2 ENLARGED SITE PLAN

C-3 ELEVATIONS

C-4 COMPOUND DETAILS

C-5 GENERATOR AND PROPANE TANK DETAILS

C-6 HVAC DETAILS

C-7 EQUIPMENT SHELTER FOUNDATION PLAN

C-8 GENERATOR SHELTER FOUNDATION PLAN

E-1 SITE GROUNDING PLAN & DETAILS

E-2 GROUNDING DETAILS I

E-3 GROUNDING DETAILS II

RF-1.0 RF TOWER APPURTENANCES I

RF-1.1 RF TOWER APPURTENANCES II

RF-1.2 RF TOWER APPURTENANCES III

RF-1.3 RF TOWER APPURTENANCES IV

RF-1.4 RF TOWER APPURTENANCES V

RF-1.5 RF TOWER APPURTENANCES VI

U-1 SOLAR PV ARRAY DETAILS I

U-2 SOLAR PV ARRAY DETAILS II

U-3 SOLAR PV ARRAY DETAILS III

U-4 SOLAR PV ARRAY DETAILS IV

U-5 SOLAR PV ARRAY DETAILS V

SH-1 EQUIPMENT SHELTER EXTERIOR ELEVATIONS

SH-2 EQUIPMENT SHELTER INTERIOR ELEVATIONS

SH-3 HIGH SNOW ENTRY VESTIBULE

SH-4 ELECTRICAL ONE-LINE DRAWING

SH-5 ELECTRICAL PANEL SCHEDULE

SH-6 GENERATOR SHELTER EXTERIOR ELEVATIONS

SH-7 GENERATOR SHELTER INTERIOR ELEVATIONS

2. Replace House Mountain heading and drawing list shown on Page iii with the following Final Construction Plans:

a. Attachment B - Final Construction Plans - House Mountain - REVISION_10-15-2025

C. TABLE OF CONTENTS, PLANS AND DRAWINGS..............................ATTACHMENT B

1. Replace the METCOM 911 (RESERVED) heading and drawing list shown on Page v with the following:

METCOM 911

T-1 COVER SHEET

EX-1 EXISTING CONDITIONS

G-1 GENERAL NOTES

ER-1 GRADING & EROSION CONTROL PLAN

ER-2 GRADING & EROSION CONTROL PLAN DETAILS

C-1 OVERALL SITE PLAN

C-2 ENLARGED SITE PLAN

C-3 ELEVATIONS

C-4 COMPOUND DETAILS

C-5 HVAC DETAILS

C-6 EQUIPMENT SHELTER FOUNDATION PLAN

E-1 SITE GROUNDING PLAN & DETAILS

E-2 GROUNDING DETAILS I

E-3 GROUNDING DETAILS II

RF-1.0 RF TOWER APPURTENANCES I

RF-1.1 RF TOWER APPURTENANCES II

SH-1 EQUIPMENT SHELTER EXTERIOR ELEVATIONS

SH-2 EQUIPMENT SHELTER INTERIOR ELEVATIONS

SH-3 ELECTRICAL ONE-LINE DRAWING

SH-4 ELECTRICAL PANEL SCHEDULE

D. Question and Answers:

1. Each plan set has the following note “TOWER FOUNDATION; SEE SABRE TOWER

DRAWINGS FOR STRUCTURAL INFORMATION”

I cannot locate the drawing that is mentioned or details for the tower foundation in any of the plan sets. Please clarify.

The note “TOWER FOUNDATION; SEE SABRE TOWER DRAWINGS FOR STRUCTURAL INFORMATION” refers to the six (6) Supporting Documents listed, below:

1. Attachment C - Supporting Documents - Anderson-Pierce-Wonderly (APW) (pages 1-86)

2. Attachment C - Supporting Documents - Crooked Finger (pages 1-86)

3. Attachment C - Supporting Documents - House Mountain (Available by 10/20)

4. Attachment C - Supporting Documents - Lower Prospect (pages 1-82)

5. Attachment C - Supporting Documents - McCully Mountain (pages 1-86)

6. Attachment C - Supporting Documents - Wipper (pages 1-86)

Prospective bidders can download these documents from Marion County’s procurement portal. The Contractor will be required to construct the concrete foundation for each tower, including but not limited to excavation, including rock removal where required; subgrade preparation; forming; supply and installation of reinforcing steel, embedded anchors and, where required, ground anchors; supply, placement, consolidation and finishing of structural concrete; backfilling, and all related work necessary to construct the tower foundations.

Marion County will issue an addendum to the ITB adding these documents to the Contract Exhibits listed in Section 2 of the ‘SAMPLE CONSTRUCTION CONTRACT PW- XXXX-XX’. Note, further, that the erection drawings for the House Mountain site are currently in production and will be posted to the Marion County procurement portal as soon as we receive them from Sabre.

2. Sheet EX-1 House Mountain Plans call out for a generator to be removed. is this to be salvaged for re-use or removed in its entirety?

The Contractor shall remove and dispose of the existing generator. It will not be reincorporated into the Project.

3. The special provisions mention "installation of tower-mounted radio equipment by others" and "installation of radio and DC power equipment by others" please confirm the general contractor is not expected to supply/install any equipment on the new towers. please clarify the scope of the electrical / low voltage

Regarding "installation of tower-mounted radio equipment by others," the Contractor is responsible for assembly and erection of the government-furnished steel lattice towers as shown in the steel tower erection drawings (see Supporting Documents for each Project location), including the tower, leg caps, step bolts, safety climb hardware, waveguide ladder, bolts and hardware, and grounding systems. The installation of radio equipment, waveguide, electrical wiring, sidearms, pipe mount kits, tiebacks and ice shields on the tower is excluded from the Contractor’s scope of work and will be performed by a separate contractor after tower erection is complete.

Regarding "installation of radio and DC power equipment by others," the Contractor is responsible for setting and anchoring the government-furnished prefabricated radio equipment shelters, installation of HVAC systems, installation of electrical power systems to power the shelter (certain photovoltaic power system components, electrical generators and commercial power hookup), installation of grounding systems and electrical hookup of the shelter, in accordance with the Plans and Drawings. The installation of radio equipment, equipment racks and direct-current (DC) backup power systems inside the equipment shelters is excluded from the Contractor’s scope of work and will be performed by Marion County’s radio vendor after installation of the radio equipment shelter is complete.

Regarding photovoltaic power systems, the Contractor is responsible to supply and install all photovoltaic support structures and photovoltaic panels as shown in the Plans and Drawings (U Drawings). Supply and installation a photovoltaic cabling and inverts is excluded from the Contractor’s scope of work and will be performed by others.

4. Are installation instruction available for the equipment & generator buildings? Do these need to be assembled or do they come pre-assembled?

Except as noted in this response, the government-furnished prefabricated radio equipment and generator shelters will be delivered by Shelter One fully assembled and ready to be set and anchored as shown in the Plans and Drawings. The Contractor shall field-install the HVAC systems for each shelter as preinstallation of these systems is not provided by Shelter One. Refer to the Project Summary List for additional information regarding delivery and staging of government-furnished prefabricated shelters.

Provisions have been made for Marion County to receive and store the prefabricated shelters at a county-owned yard located in Aumsville, Oregon (the “Staging Area”). The Contractor is responsible for reloading and transporting the prefabricated shelters from the Staging Area to the project sites. The Contractor may elect to coordinate delivery by Shelter One directly to each project site to save the time and effort associated with reloading and trucking shelters from the Staging Area to the project sites. If the Contractor chooses to do this, the Contractor shall be solely responsible for all costs, risks and coordinating effort associated with the planning and execution of such alternative delivery plans, including but not limited to any storage fees, added shipping or delivery fees, unloading and transport costs, and all other related costs.

5. Is the contractor responsible for hauling owner provided material from storage locations to job site?

Yes, the Contractor is responsible for loading, transporting and unloading government-furnished materials from the Staging Areas identified in the Project Summary List to each project site. Marion County believes the opportunity exists for the Contractor to make arrangements with certain suppliers to have certain government-furnished equipment delivered directly to the project sites to save the time and effort associated with the loading and transport of materials from the Staging Areas to the project sites. This includes the Sabre steel lattice towers, the Shelter One prefabricated shelters and the Cummins generators. Refer to the Project Summary List for additional information.

6. Will each site be awarded separately, or is this an all-inclusive bid covering all sites?

The construction of all seven (7) sites will be awarded to a single contractor under a single construction contract.

7. Has all zoning and permitting been completed for all projects?

Land use approvals and Structural building permit acquisition are the responsibility of Marion County and are currently in process. Government-furnished Shelter One prefabricated shelters will be permitted through the Oregon Building Codes Division Prefabricated Structures Program and will arrive bearing the State insignia “Gold Seal” approval. Proposers are to assume that these permits will be provided by Marion County without delay to the Contractor’s construction schedule. The Contractor will be responsible to obtain Electrical and Mechanical (HVAC and Propane Gas Piping) building permits and to pay Electrical and Mechanical building permit fees.

8. Has electrical permits/designs been completed? and if so can you provide UCR.

No, the acquisition of Electrical building permits will be the responsibility of the Contractor.

The government-furnished Shelter One prefabricated shelters will include all electrical components pre-installed, including disconnects for the field-installed HVAC systems, as shown in the Plans and Drawings (SH Sheets) and will be inspected under the Oregon Building Codes Division Prefabricated Structures Program.

9. Is the backhaul/fiber paths going to be included in this project? and if so can you provide UCR.

Data backhaul for the new radio system will consist of a new, tower-mounted microwave communications network. The supply and installation of the data backhaul system is excluded from the scope of this contract and will be provided by Marion County radio vendor.

10. Could you provide a more detailed SOW for each site?

The Contractor is responsible for the following construction activities at all sites where indicated in the Plans and Drawings, Special Provisions and Standard Specifications:

a. Clearing, grubbing, excavation, backfill and grading associated with the Work,

b. Construction of steel lattice tower foundations, erection of government-furnished steel lattice towers and installation of all associated equipment and grounding systems supplied by the tower manufacturer,

c. Construction of prefabricated radio equipment and generator shelter foundations, installation and anchorage of government-furnished prefabricated shelters, and installation of complete HVAC systems,

d. Construction of electrical generator foundations, and installation and anchorage of government-furnished generators,

e. Construction of complete liquid propane fuel storage systems, including tank foundations, site piping and bollards,

f. Construction of photovoltaic arrays and support structures,

g. Installation of complete site electrical systems, including trenching, conduits, power up of electrical panels in prefabricated shelters, and procurement of all necessary electrical permits,

h. Installation of fencing, gates and signs,

i. Construction of complete site grounding systems,

j. Gravel surfacing and the construction of new access roads,

k. Removal and disposal of existing steel towers designated for removal (House

Mountain, Lower Prospect and Wipper),

l. Installation, maintenance and removal of erosion control measures,

m. Restoration of improved ground surfaces such as lawns, landscaped areas and pavements impacted by Contractor’s activities,

n. On-site disposal of clean soil and rock spoils and off-site disposal of all construction debris,

o. Coordination of generator start-up and commissioning by Marion County’s generator vendors,

p. Coordination of quality control field testing by Marion County’s QC testing contractor,

q. Building permit final inspection reports, as-built drawings and O&M manuals for Contractor-supplied systems,

r. Installation and removal of any temporary commercial power services needed for Contractor’s construction activities,

s. Final Inspections and Compliance Reports (refer to Special Provisions Section 00150),

t. General post-construction site cleanup, and

u. All other Work identified in the Plans and Drawings, Special Provisions and Standard

Specifications.

Note: House Mountain, Lower Prospect, METCOM 911 and Wipper are existing radio sites that must remain in operation throughout construction. Contractor must accommodate existing radio operations throughout construction, including allowing reasonable time for Marion County, its radio system vendors and colocation partners to relocate existing radio equipment from existing towers and equipment shelters to the new towers and equipment shelters installed by the Contractor before the removal of any existing site improvements that would impact existing radio site operations.

The Contractor is not responsible for the following:

a. Demolition of the existing House Mountain tower foundation (this foundation will be abandoned in place) and demolition of the existing Lower Prospect and Wipper tower foundations below the removal extents shown on the Plans and Drawings,

b. Maintenance of existing access roads during and after construction (such maintenance shall be performed by Marion County Public Works),

c. Supply and installation of radio communications equipment and data backhaul systems on radio towers and within equipment shelters, including equipment racks and direct-current (DC) power systems (these systems will be supplied and installed complete by Marion County’s radio vendor),

d. Supply and installation of photovoltaic cabling and inverters,

e. On-site quality control testing of Portland cement concrete and soil and aggregate compaction (this testing will be performed by a QC testing firm under contract with Marion County), and

f. Procurement of Structural building permits.

11. Are we to assume that Liquidated damages will start to incur after the contract date of July 31,2026 if incomplete regardless of delays in equipment inclement weather Etc.

Refer to Specification Section 00180. Interim completion dates are specified for each site for certain construction milestones, allowing Marion County’s radio vendor to perform work concurrent with the Contractor’s construction activities. Liquidated damages of $120 per day per site apply if the Contractor fails to achieve the specified interim project milestones. These liquidated damages are cumulative. Liquidated damages of $1030 per day apply if the Contractor fails to complete all contract work by the specified contract completion date.

Potential time extensions for such things as unusual weather delays, unforeseen site conditions and Acts of God will be administered in accordance with the Special Provisions.

12. Are there any environmental reports on these project?

All new towers have been evaluated for environmental concerns as specified by the Federal Communications Commission (FCC) in 47 C.F.R. § 1.1307 NEPA FCC Checklist. It is concluded that the Project is not likely to result in any adverse effects to the categories reviewed.

13. Could you please provide the weight of the shelters for each site?

Answer will be posted in Addendum 2.

14. Do we need to haul wood debris and spoils off-site? Please clarify for each site.

Clean native soil and rock spoils may be disposed of onsite in a location and manner approved by the property owner. All other demolition and construction debris, including grubbings and woody debris, must be disposed of off-site.

15. Should we include road improvements in the bid? Please clarify for each site.

The Contractor is responsible for the construction of new access roads and aggregate surfacing where shown in the Plans and Drawings. The Contractor is not responsible to maintain existing access roads during or after construction. Marion Count will maintain existing access roads and is aware that the access road to the APW site requires additional aggregate surfacing to maintain all-weather access for construction.

16. Regarding sheet C-4 for locations Crooked Finger Row, McCulley Mountain and Wipper.

Should we be going off the fencing notes or the typical fence elevation for the post sizes?

Utilize fencing post chart labeled “8' HIGH GATE/FENCE”.

Will Brown privacy slats be installed for all new chain link?

No privacy slats.

Note 21 on general fence notes states the installation of specified concertina 24” diameter barb tape coils unless otherwise noted. Will there be concertina barb tape coils installed to all new fencing?

When matching existing security fencing utilize similar top strands (barbed wire if applicable) and on new compounds utilize concertina as specified in the Plans and Drawings.

Note 21 on general fence notes states that the concertina barb tape coils will be installed onto (6) barb wire arms. Standard barb wire is three strands, 12” above the top rail which is shown in the typical fence elevation drawing. Can we get confirmation on whether it will be six strands or three strands?

Barbed wire installation to be 12" arm with three (3) strands.

Will the top rail be 1-7/8” O.D. or 1-5/8” O.D.?

Gate frame to be -1-7/8" OD, top and -1-5/8" OD, SCH. 40 (50 KSI) ASTM