S06 Addendum Number 1 - 10 pages.pdf

220 Ramsey Street, Hastings, MN 55033 | 651.319.0170 enviros.co

PROJECT: 636A8-24-003, Correct Lightning Protection and Grounding

TO: Prospective Bidders

This addendum forms a part of the Contract Documents and modifies the original Contract Documents dated 08/15/25 as noted below. Acknowledge receipt of this Addendum by inserting the number and issue date of this addendum in the blank space provided on the Bid Form. Failure to do so may subject the Bidder to disqualification.

This Addendum consists of Nine (10) pages.

QUESTIONS FROM BIDDERS WITH AE RESPONSE

Contractor Question VA/AE Response

1 The construction documents and general notes reference both a UL Master Label certification and a UL Letter of Findings for the lightning protection system. As you are aware, UL Master Labels are typically issued only for complete, new, fully compliant systems applied to a single structure, whereas campus-wide retrofits or modifications to existing systems generally result in a UL Letter of Findings documenting compliance with UL 96A. Please confirm whether the VA’s required final deliverable for this project is: A UL Master Label for each building included in the scope, or A UL Letter of Findings issued by UL for each building or system area inspected.

See Addendum 1. Specifically changes to specification section 26 41 00 also see 26 41 00 part 3.2

2 Does the VA have a suggestion on how to run new downleads vertically? It seems physically impossible since it's 10 stories and there is no clear way to get a lift or crane around this area.

Means and Methods are responsibility of the contractor. In past projects this building has been accessed by use of bosons chair and swing stage scaffold. All safety compliant means and methods will be considered for approval with a proper safety plan

4 Can existing downleads be utilized on the tallest buildings (Building 1) as opposed to new downleads being installed? Access to installing new downleads on these would be very complicated and would not be accessible with a lift.

a. If new downleads are required on building 1, please confirm the VA's preference to access the areas for downlead installation

Contract documents require full replacement.

a) See answer to question 2 above

ADDENDUM NO. 1

01/30/2026

5 Does PVC for the downleads need to be installed the entire run from the roof to the ground, or just on the ground near the rods?

Detail 5 and 6 appear to be contradictory.

Detail 6 states to 'ROUTE DOWNLEAD

CONDUCTOR EXPOSED ALONG

STRUCTURE SURFACE FROM ROOF TO

BELOW GRADE'. Detail 5 states to route the conductor in PVC conduit. Please confirm what the expectation is for PVC conduit.

See Specification Section 26 41 00 - 3.1 E

6 Can existing downleads be utilized on the tallest buildings (Building 1) as opposed to new downleads being installed? Access to installing new downleads on these would be very complicated and would not be accessible with a lift.

a. If new downleads are required on building 1, please confirm the VA's preference to access the areas for downlead installation

Contract documents require full replacement.

a) See answer to question 2 above

7 Reference Sheet E-101 through E-103 Keyed Electrical Sheet Note 2, Sheet E-106, through E-108 Keyed Electrical Sheet Note 1. Should we assume railing thicknesses are adequate to be used as a main conductor and main conductor termination device?

Note 2 sheets E-101 through E-103 modified by addendum 1 Note 1 Sheets E-106 through E-108 modified by addendum 1

8 Reference Sheets E-202, E-203, E-204, E-205, E-206, E-207, E-208, E-209 Keyed Electrical Sheet Note 5. This note indicates the number of busbars and their locations are not known by the Government. It also indicates that grounding has not been verified or if it has been verified not verified for correctness.

a. Can you provide the quantity and locations of the AC Ground Busbars?

b. If grounding is verified as present by the contractor, can we assume the grounding meets all grounding requirements as currently installed?

c. If grounding is not in place is the contractor responsible for installing grounding or will it be looked at as a differing site condition?

d. Who is responsible for design/verification of the grounding to meet UL requirements?

Sheets referenced removed by Addendum 1

9 Reference Sheet E-213, E-214. Is there any new work on these sheets. “LOCATION

OF NEW GROUND

BAR” is on a call out note.

This question has been answered by Addendum 1. Details added to drawings

a. Are the ground bars to be installed by the Contractor?

b. Are the ground bars to be connected to anything

10 Reference Sheet E-701, E-702, E-703, E-704, E-705, E706, E707. Many of the one-line diagrams are not labeled to show building locations. Building locations that are shown do not show the building location being fed from.

Can you please label all One-Line Diagrams

Building names added by Addendum 1

11 Reference Sheet E-701, E-704, E-705, and E- 707 Keyed Electrical Note 1. Should the contractor bid to replace the surge suppressive device at bid time or will it be a differing site condition if found to be damaged or un-operational?

This question has been addressed by Addendum 1. Sheet Note changed

12 In Construction Scope of Work 3.6.1 “ Upgrade and installation of fire alarm controllers that connect the building automation control system to the fire alarm system.” Is this part of this work, and if so, where on the drawings in this work?

There is no fire alarm work for this project. This section of the specifications describes requirements of the contractor if the work interrupts fire alarm system

13 In specifications and drawings E-001 it indicated that “IT IS THE CONTRACTORS

RESPONSIBILITY TO PROVIDE ALL

INSPECTIONS NEEDED TO RECEIVE A UL

MASTER LABEL CERTIFICATION FOR THE

SITE.” There are sections of buildings that are not in the scope of work. Do these have a current UL Master Label? If not, will a letter of finding be adequate. In some areas it calls for a letter of finding. We just want to be clear, in some buildings you want a letter of finding and others will require the UL Master Label.

Correct?

Each building that has an existing lighting protection system is being demolished in its entirety and replaced. A new master label for each building is required

Buildings that are not in scope just that and do not require letter or label

14 E-701 – “EXISTING BUILDING MAIN

SERVICE HAS EXISTING SURGE

SUPPRESSIVE DEVICE. FIELD

COORDINATE DEVICE IS FULLY

OPERATIONAL AND PROVIDE NEW IF

DAMAGED OR UN-OPERATIONAL.” If this surge suppression device is not functional, would the contractor be responsible for the cost of this device and installation, or will this be a cost change?

This question has been addressed by Addendum 1. Sheet Note changed

15 Can we alter the design, in full compliance with UL96 to allow for installation?

Designs, although comprehensive, are required minimums and diagrammatic. Contactors are required to complete the work in such a way that buildings receive a label. Changes in the work per UL96 will be considered but not be less than the design documents

16 Does the Superintendent need to be directly employed by the Prime Contractor?

The Superintendent, however employed shall be able to make decisions for the Prime Contractor. No limited employees in that position

15 Must the Superintendent be on site at all times while work is commencing?

As per the SOW, it is a requirement that the project superintendent be dedicated exclusively to this project through the duration of the period of performance.

16 Does the SSHO (Site Safety Health Officer) need to be directly employed by the Prime Contractor?

Directly employed is not a reqirement

17 Must the SSHO be on site at all times while work is commencing?

As per the Specs, the SSHO must be at the work site at all times, during construction activities, to implement and administer the Contractor's safety program and government-accepted Accident Prevention Plan.

18 Can the Superintendent & SSHO be a dual-hatted individual assuming that individual is qualified for both roles?

As per the Specs, the SSHO has to be a separate qualified individual from the Prime Contractor’s Superintendent and/or Quality Control Manager with duties only as the SSHO.

19 Are there any other mandatory on-site roles required in this contract?

Site Superintendent and SSHO.

20 When does the VA expect the project to start following the award?

Standard contract award timing is expected

21 Are there any concerns for Asbestos Containing Material or Lead in the areas being worked in?

None are expected within the scope of work however the building was built prior to 1981 so standard construction practices regarding OSHA’s work around PACM must be followed.

The owner has available ACM study data for use by the contractor.

22 Are there any ICRA requirements for this project?

Limited to ceiling removal in patient care areas.

Greatly reduced by Addendum 1

23 Is there a specific location for contractor laydown area?

o Must this area be surrounded and secured by temporary fencing?

o How big of an area is being provided?

An area will be provided and will be defined at the kickoff meeting. No fencing will be required by the project however the contractor will be required to provide barricades for safety where required by the work. Contractor will also be responsible for security of materials

24 If continuity tests on existing down conductors aren’t adequate, how do we proceed?

Down conductors are to be replaced in all locations

25 Given that the existing roofs on this project appear to be older and the solicitation details do not indicate new roof installation or manufacturer warranty requirements, please confirm whether special roofing requirements (e.g., manufacturer warranty, inspections, or related provisions) are applicable to this project.

Contractors will be required to perform work without damage to equipment or buildings that will affect warranties.

26 Is there a way to access all rooms included in the grounding scope using existing conduit, open ceiling tiles, or drop ceiling tiles from the exterior of the building? Will sections of walls

This has been defined by changes in Addendum 1 or ceilings need to be removed to create a route?

27 Should bidders assume all grounding rods will be installed in unobstructed finish grade?

a. Should private locates be provided by the contractor ahead of installing ground rods?

Contractor is responsible for locates that are needed for this work

28 Will ample elevator and/or roof access be provided for all work areas by VA for materials and equipment in cart and pallet-sized loads?

o If not, must a crane or lift be included in contractor's bid?

o If a crane must be included, can the VA provide locations crane set up is acceptable?

Access to 10th floor is by elevator. 11-12 Is by stairs near elevator A.

29 E-701 – “EXISTING BUILDING MAIN

SERVICE HAS EXISTING SURGE

SUPPRESSIVE DEVICE. FIELD

COORDINATE DEVICE IS FULLY

OPERATIONAL AND PROVIDE NEW IF

DAMAGED OR UN-OPERATIONAL.” If this surge suppression device is not functional, would the contractor be responsible for the cost of this device and installation, or will this be a cost change?

Changed by Addendum 1

30 The documents appear to require new downlead conductors (and indicate PVC / new routing). However, at the 10-story bed tower, it is not clear how new PVC or new downleads can be installed given access constraints (no apparent path for lift/crane placement and limited exterior reach). Existing conditions appear to include an existing downlead raceway, but the drawings/specs do not clearly state whether it may be reused.

Request for Information:

1. Can the existing downlead raceway be used for the new downlead conductors at the 10-story bed tower?

2. If reuse is not permitted, please provide the required routing, mounting method, and means/method access expectations for installing new downleads/PVC on the 10-story elevation (e.g., swing stage, rope access, interior routing, crane/lift locations, etc.).

3. Confirm whether any selective demolition/opening of the existing raceway is allowed/required to facilitate pulling new conductors.

1) Drawings call for complete demo of all including down conductors. Secure down conductors per code and per manufacturers requirements

2) Routing per NFPA 780 and UL96

3) Drawings call for complete demolition of existing system and replace with new

31 Reference Sheet E-101 through E-103 Keyed Electrical Sheet Note 3. References

4) Note indicates that the contractor can use the existing steel structure in this location as the main conductor where

“connection requirements needed”. Please provide the connection requirements possible. Contractor shall determine in the field the number of connections to the system needed to properly utilize the steel structure as the main conductor.

32 Reference Sheet E-210, E-211, E-212 Keyed Electrical Sheet Note 1 and E-502 Detail 9.

Based on this note, it appears that the design has not verified whether the existing grounds are in place.

a. If grounding is verified as present by the contractor, can we assume the grounding meets all grounding requirements as currently installed?

b. If grounding is not in place is the contractor responsible for installing grounding or will it be looked at as a differing site condition?

c. Who is responsible for design/verification of the grounding to meet UL requirements?

d. Can you show the floor plan locations on the drawings to connect to the Main Electrical Service, Radio Com Equipment, Phone Equipment, Building Steel, Water Main, Fire Sprinkler Main, Waste Water, Gas Line and Chiller Lines as required by Detail 9 on Sheet E-502?

Detail 9 Removed by Addendum 1.

CHANGES TO DRAWINGS:

Sheet E-001 Symbol Legend and Sheet List Fire Barrier Legend added, Sheet list Modified

Sheet E-101 Keyed Electrical Sheet Note 2 Remove existing Note 2 and replace with the following:

2) EXISTING PERIMETER RAILING ON ROOF MAY BE USED AS MAIN CONDUCTOR AND STRIKE

TERMINATION DEVICE. THIS WILL REQUIRE FIELD VERIFICATION OF RAILING THICKNESS TO BE USED

AS A MAIN CONDUCTOR OR TO BE USED AS A MAIN CONDUCTOR AND TERMINATION DEVICE.

Sheet E-102 Keyed Electrical Sheet Note 2 Remove existing Note 2 and replace with the following:

2) EXISTING PERIMETER RAILING ON ROOF MAY BE USED AS MAIN CONDUCTOR AND STRIKE

Sheet E-103 Keyed Electrical Sheet Note 2 Remove existing Note 2 and replace with the following:

2 EXISTING PERIMETER RAILING ON ROOF MAY BE USED AS MAIN CONDUCTOR AND STRIKE

TERMINATION DEVICE. THIS WILL REQUIRE FIELD VERIFICATION OF RAILING THICKNESS TO BE USED

AS A MAIN CONDUCTOR OR TO BE USED AS A MAIN CONDUCTOR AND TERMINATION DEVICE.

Sheet E-106 Keyed Electrical Sheet Note 1 Remove existing Note 1 and replace with the following:

1 EXISTING PERIMETER RAILING ON ROOF MAY BE USED AS MAIN CONDUCTOR AND STRIKE

TERMINATION DEVICE. THIS WILL REQUIRE FIELD VERIFICATION OF RAILING THICKNESS TO BE USED

AS A MAIN CONDUCTOR OR TO BE USED AS A MAIN CONDUCTOR AND TERMINATION DEVICE.

Sheet E-107 Keyed Electrical Sheet Note 1 Remove existing Note 1 and replace with the following:

1 EXISTING PERIMETER RAILING ON ROOF MAY BE USED AS MAIN CONDUCTOR AND STRIKE

TERMINATION DEVICE. THIS WILL REQUIRE FIELD VERIFICATION OF RAILING THICKNESS TO BE USED

AS A MAIN CONDUCTOR OR TO BE USED AS A MAIN CONDUCTOR AND TERMINATION DEVICE.

Sheet E-108 Keyed Electrical Sheet Note 1 Remove existing Note 1 and replace with the following:

1 EXISTING PERIMETER RAILING ON ROOF MAY BE USED AS MAIN CONDUCTOR AND STRIKE

Sheet E-201 Keyed Electrical Notes

Delete notes 6 and replace it with the following:

6) PROVIDE NEW GROUNDING BUS BAR PER SPECIFICATIONS AND BOND TO EXISTING ELECTRICAL SYSTEM BAR SAME LOCATION. PROVIDE A 3/0 BARE BONDING JUMPER TO BONDING CONDUCTORS

SOUTHWEST CORNER OF ROOM. SEE PLAN NOTE 2 THIS SHEET

Delete note 7 and replace it with the following:

7) PROVIDE NEW GROUNDING BUS BAR PER SPECIFICATIONS AND BOND TO EXISTING ELECTRICAL

SYSTEM BAR WITH 3/0 BONDING JUMPER

Add new note 8 that reads

8) PROPOSED PATHWAY FOR GROUNDING. LINES ARE INDICATIVE OF PATHWAY TO ROOMS ONLY AND

SHALL TERMINATE AT EACH ROOM'S GROUND BAR AS SHOWN ON SHEET E-601. CONTRACTOR TO

VERIFY FIELD CONDITIONS AND FEASIBILITY OF PATHWAY WITH COR BEFORE INSTALLATION.

Sheet E-202 Delete this sheet in its entirety.

Sheet E-203 Delete this sheet in its entirety.

Sheet E-204 Delete this sheet in its entirety.

Sheet E-205 Delete this sheet in its entirety.

Sheet E-206 Delete this sheet in its entirety.

Sheet E-207 Delete this sheet in its entirety.

Sheet E-208 Delete this sheet in its entirety.

Sheet E-209 Delete this sheet in its entirety.

Sheet E-210 Keyed Electrical Note 1 Remove existing Note 1 and replace with the following:

1 LOCATION OF EXISTING BUILDING ELECTRICAL SYSTEM GROUND BAR. PRROVIDE CONNECTIONG TO

NEW LIGHTNING PRTECTION SYSTEM PER SPECIFICATIONS AND UL96A REQIREMENTS

Sheet E-211 Keyed Electrical Note 1 Remove existing Note 1 and replace with the following:

1 LOCATION OF EXISTING BUILDING ELECTRICAL SYSTEM GROUND BAR. PRROVIDE CONNECTIONG TO

NEW LIGHTNING PROTECTION SYSTEM PER SPECIFICATIONS AND UL96A REQIREMENTS

2 PROVIDE NEW ELECTRICAL SYSTEM GROUNDING BUS BAR IN ELECTRICAL ROOM B25

3 PROVIDE 3/0 BARE CONDUCTOR FROM NEW GROUNDING BUS BAR TO GROUND IN MAIN

PANELBOARD LOCATED IN MEZINENE DIRECTLY ABOVE BUS BAR LOCATIONS.

4 NEW LIGHTNING SYSTEM INTERCONNECTION

Sheet E-212 Keyed Electrical Note 1 Remove existing Note 1 and replace with the following:

1 PROVIDE NEW ELECTRICAL SYSTEM GROUNDING BUS BAR IN ELECTRICAL ROOM 1M04

2 PROVIDE 3/0 BARE CONDUCTOR FROM NEW GROUNDING BUS BAR TO GROUND IN MAIN

PANELBOARD SAME ROOM.

3 NEW LIGHTNING SYSTEM INTERCONNECTION

4 PROVIDE NEW ELECTRICAL SYSTEM GROUNDING BUS BAR IN ELECTRICAL ROOM NEAR PANEL EDPH

Sheet E-213 Add the following Keyed Electrical Note to this sheet

1 PROVIDE NEW ELECTRICAL SYSTEM GROUNDING BUS BAR IN ELECTRICAL ROOM B25

2 PROVIDE 3/0 BARE CONDUCTOR FROM NEW GROUNDING BUS BAR IN ELECTRICAL ROOM B25 TO 3/0

GROUNDING CONDUCTOR IN SAME ROOM FROM MAIN PANELBOARD. PROVIDE 3/0-3/0 TAPPING

CRIMP SPLICE PER SPECIFICATIONS.

4 EXISTING TELECOMMUNICATIONS GROUNDING BAR TO REMAIN

Sheet E-214 Add the following Keyed Electrical Note to this sheet

1 PROVIDE NEW ELECTRICAL SYSTEM GROUNDING BUS BAR IN ELECTRICAL ROOM B41

2 PROVIDE 3/0 BARE CONDUCTOR FROM NEW GROUNDING BUS BAR IN ELECTRICAL ROOM B41 TO

MAIN PANELBOARD MDPH SAME ROOM.

Sheet E-502 Delete detail 9 from this sheet.

Sheet E-601 Grounding Riser diagram reduced to bonding of equipment in basement and sub-basement

Sheet E-701 Remove existing Note 1 and replace with the following:

EXISTING BUILDING MAIN SERVICE SURGE SUPPRESSIVE DEVICE TO BE REMOVED. PROVIDE NEW SURGE

DEVICE PER SPECIFICATIONS.

Sheet E-704 Remove existing Note 1 and replace with the following:

EXISTING BUILDING MAIN SERVICE SURGE SUPPRESSIVE DEVICE TO BE REMOVED. PROVIDE NEW SURGE

DEVICE PER SPECIFICATIONS.

Sheet E-705 Remove existing Note 1 and replace with the following:

EXISTING BUILDING MAIN SERVICE SURGE SUPPRESSIVE DEVICE TO BE REMOVED. PROVIDE NEW SURGE

DEVICE PER SPECIFICATIONS.

Sheet E-707 Remove existing Note 1 and replace with the following:

EXISTING BUILDING MAIN SERVICE SURGE SUPPRESSIVE DEVICE TO BE REMOVED. PROVIDE NEW SURGE

DEVICE PER SPECIFICATIONS.

CHANGES TO SPECIFICATIONS:

Section 00 01 10 Table of Contents Table updated

Section 00 01 15 List of Drawings sheets:

Removed the following sheets:

E 202 E 203 E 204 E 205 E 206 E 207 E 208 E 209

Section 26 41 00 Part 1 Sub Part 1.1 A

Add to the end of this sentence “for each building included”

Section 27 05 26

Delete this section in its entirety.

END OF ADDENDUM