Question and Answers - Addendum 1.pdf
PDF 43 KB Posted
- Attached to
- ITB - ARPA - Construction and Other Site Improvements at Up to Six (6) Radio Communications Sites
- Solicitation number
- S-C25102-00016204
- Issued by
- Marion County, Oregon
About this file
This is an Addendum #1 to an Invitation to Bid (ITB) issued by Marion County, Oregon for construction and site improvements at up to six non-tower radio communications sites under project designation PW1791-26. The addendum addresses questions and answers from prospective bidders regarding work scope clarifications at four specific sites: Eastview, Metcom 911, Crosby, and MCPW. Key clarifications include confirmation that existing power service will be maintained from existing panels; grounding systems must be bonded together per Motorola R56 standards; battery racks will be supplied by others and excluded from contractor scope; electrical conduit routing is permitted under building eaves; internal and external grounding rings are existing features while electrolytic ground electrodes are contractor-provided; contractors must install new automatic transfer switches and generator plugs; existing fence heights must be matched at six feet; antennas and associated transmission line systems (coax/fiber) will be provided by others and excluded from this contract; and three-phase power will be stepped down to single-phase at the shelter location via contractor-supplied transformer.
The addendum provides essential scope clarifications that exclude antenna installations, battery racks, and transmission line systems from contractor responsibilities, thereby reducing project complexity and coordination requirements. Alternative engineered designs may be submitted for review and acceptance by Marion County. All items annotated with "(P)" on project plans are designated as contractor-provided work and must be included in lump sum bids. The document confirms that contractor involvement is limited to structural, electrical, grounding, and site preparation work, with coordination focused on accommodating existing antenna wiring and waveguide pathways rather than direct radio system vendor coordination.
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Other files
| File | Type | Posted |
|---|---|---|
| Preliminary Bid Results PW1791-26 - OregonBuys.pdf | ||
| OregonBuys Posting - PW1791-26.pdf |
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PW1791-26 - ITB - Construction and Other Site Improvements at Up to Six (6) Non-Tower Radio Communications Sites Page 1 of 3
ADDENDUM #1
TO THE
INVITATION TO BID
PW1791-26 - ITB - CONSTRUCTION AND OTHER SITE IMPROVEMENTS AT UP TO
SIX (6) NON-TOWER RADIO COMMUNICATIONS SITES
ISSUED ON 3/26/2026 2:00:00 PM
The following information in this addendum, hereby become part of the Invitation To Bid. It is essential that all prospective Offerors note the content of this Addendum.
A. Question and Answers:
EASTVIEW
1. Where will power come from and will we use existing h-frame for service?
a. The existing power service will be maintained. Power will be supplied from the existing power panel located inside the shelter.
2. Are both the ground ring with rods and the XIT rod needed ? and if so, are we to connect together? The cd’s do not show.
a. Refer to Sheet E-1. Yes, the electrolytic (XIT) ground rod and all other underground grounding conductors and components identified to be provided by the Contractor are to be bonded together and connected to a common grounding system, as required by Motorola R56. All grounding is to be common.
3. Can a steel plate be installed in the shelter in place of busting out the concrete and re-pouring it.
a. The Contractor may submit an alternative engineered design to Marion County for review and acceptance.
4. Will all the purposed items be bid on? Some were not discussed on walk.
a. Bidders shall include all items of work annotated with “(P)” on the Plans, indicating they are to be provided by the Contractor in their lump sum bid for the project.
5. Will battery racks be supplied or will we need to supply, if we supply please let us know what rack to purchase.
a. The callout on Sheet C-4 that reads, “(P) BATTERY RACK TYP OF (3)” is incorrect.
Battery racks will be supplied and installed by others and are excluded from the Contract.
Bidders may exclude the cost of battery racks from their bids. County does not intend to issue amended plans at this time but will correct this callout if it becomes necessary to issue amended plans before the bid due date.
METCOM 911
1. Want to confirm we can run conduit route out under the eave around building to new shelter location?
a. Yes, the Contractor may route the electrical conduit run under the eave around the building to the new shelter location. The City of Woodburn prefers that the horizontal run on the west side of the building be located as close to the top of wall as possible.
CROSBY
1. Is the grounding around the tower getting installed ? was not discussed at walk?
a. Refer to Sheet E-1. The internal and external radio shelter grounding rings and the tower grounding ring denoted by a grey dashed line on the SITE COMPOUND GROUNDING PLAN are existing features that will remain. The electrolytic ground electrode and bonded grounding ring connections denoted by a black dashed line are to be provided and installed by Contractor.
MCPW
1. Are we to demo the old mts and gen plug and install new Appleton gen plug on exterior near meter.
a. Refer to Sheet C-4. Contractor will be required to install a new automatic transfer switch supplied by County and to supply and install a new Appleton generator plug. The existing MTS may be removed or left in place.
2. Do we use the old MTS as a splice box or demo?
a. Contractor may repurpose the MTS enclosure as a splice box at the Contractor’s convenience.
3. To confirm we are matching existing 6’ fence height.
a. Correct, match the existing 6’ fence height.
The project description references the installation of antennas with associated cabling;
however, upon review of the construction drawings and plan details, it appears that the antenna and transmission line work may be designated to others or excluded from this contract.
1. Is the contractor responsible for furnishing and installing antennas and all associated transmission line (coax/fiber) systems?
a. No, the supply and installation of antennas and associated wiring will be provided by others and is excluded from this Contract.
2. If not, please confirm that this scope will be provided and installed by others.
a. Confirmed, antennas and associated wiring will be supplied and installed by others and is excluded from this Contract.
3. Are there any coordination, mounting, or pathway provisions that remain within this contract related to future antenna or line installation?
a. Contractor will be required to accommodate existing antenna wiring and wave guide pathways. Otherwise, no direct coordination is required between Contractor and Marion County’s radio system vendor.
METCOM 911
1. Can you confirm that the power in the electrical room is 3 phase and that the step down transformer shown on sheet U-1 is needed to get to single phase at the shelter?
a. You are correct. The power supply to the existing load center is 3-phase. The step down transformer and electrical circuit extension to be supplied and installed by Contractor is single-phase.
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