S05 Question - Replace Tunnel Leak Bldg 143 with attachments.pdf

Solicitation questions for Repair Tunnel Leak Building 143

1. Please clarify the scope of work. Is the only work in this scope the work listed on page 1 of 51 of the solicitation?

A revised SOW which is dated 6/09/2022 is attach to this 36C24622B0025 Amendment 0002

2. Is any of the work inside of the tunnel in the finished space?

The replacement of the expansion joint will take place at least partially from inside the tunnel and that Contractor would need to access the back side of the concrete being repaired through the drop ceiling.

3. Want are the ICRA requirements if there is work inside the tunnel?

Contractors shall require a Class II requirements will apply. Final requirements will be confirmed COR by ICRA Nurse at project kickoff when contractor ICRA plan is provided.

See attach copy of ICRA levels

4. What is the damp proofing test that is to be done?

On review, no appropriate industry standard test can be identified. Requirement should be disregarded.

5. Please provide the 4288-R (submittal register) that’s referenced in the specification.

See attach document ENG Form 4288-R

SCOPE OF WORK

Repair Tunnel Leak

VETERANS AFFAIRS MEDICAL CENTER (VAMC)

SALEM, VA 24153

(revised 6/9/2022)

1. Project Description:

This project is to excavate on both side of the tunnel to expose it and the expansion joint providing the interface to bldg. 143. Once excavated, the tunnel is to be repaired and the expansion joint replaced. The tunnel will then be dampproofed and the excavation filled back in.

2. Primary Bid Items:

A. In preparation for excavation, the Contractor shall determine the extent of their intended excavation and perform an on-site utility survey to locate any utility and communication lines within the intended excavation perimeter as well as an additional 10 feet in all directions.

NOTE: Any plans or diagrams provided by the VA shall be considered unreliable, and contractor is responsible to field verify all conditions.

B. Unless buried utilities or communication lines prevent excavation as planned, the Contractor shall then excavate the tunnel the full height of the tunnel a minimum of 10 feet from the interface with bldg. 143 towards bldg. 4. on both sides to fully expose any damage associated with the leak.

NOTE: The tunnel shall be supported as necessary to avoid damage for the duration of this project.

Once the excavation if complete the contractor shall replace the expansion joint between bldgs. 143 and the tunnel and assess and repair any damage to the tunnel. The construction of the tunnel is detailed on the plans included in this solicitation.

NOTE: For project proposal estimation, the contractor shall assume the tunnel requires the following items will need to be repaired:

a. 200 LF of crack repair

b. 100 sqft of concrete spall repair and patching

c. 300 SF of water/damp proofing

d. 150 LF expansion joint replacement

Once the tunnel repairs are complete, the Contractor shall dampproof the tunnel to its full height on both sides and then verify and demonstrate the functionality of the damp proofing to the VA’s satisfaction.

Once the VA has approved the damp proofing test the Contractor shall fill the excavation and remediate any disturbed soil and pavement disturbed as part of this project.

C. In addition to the work above the Contractor shall assess and correct sidewalk and pavement surface drainage and slope issues causing water to be directed away from the road and existing drainage systems and towards the soil on either side of the tunnel where the leak is occurring.

The limits for this work are defined by the picture below.

NOTE: All work shall be performed to minimize disruption to VA Medical Center activities, operations, and movement.

3. Project Specifications and Other Requirements:

These documents and all national, state, and local codes adopted and used by the VA shall be incorporated into the Corrective Action Plan for this project. At a minimum, the following references shall be utilized for planning and design purposes.

a) VA Supplied Construction Specifications

b) Life Safety Codes

c) VADEQ SWPPP Guidelines

4. Project Schedule:

This project has been estimated to be completed in 175 days after contract kickoff.

Infection Control Activities by Class Precautions During Project Construction Upon Project Completion

C la ss

I

1. Keep area free of debris & trash.

2. Immediately reinstall ceiling tiles displaced for inspections.

3. Traffic Flow: Decrease exposure of patients/staff to construction.

4. Utility Shutdowns: If necessary, schedule interruptions during low activity.

5. Pest Control: Address any visible signs of birds, insects, rodents or other vermin.

6. Vacuum/sweep and wet mop surfaces daily and as needed to control debris/dust.

7. Execute work by methods to minimize dust production & migration from construction operations.

Perform clean up and disposal in accordance with contract requirements.

C la ss

II

In a dd iti on to C la ss

I

1. Dust containment barriers secure at perimeter edges.

2. Ceiling tiles in place at adjacent areas outside barrier.

3. Water mist work surfaces to control dust while cutting.

4. Unused openings (doors, windows) properly closed and sealed with masking tape.

5. Block-off, seal, remove or isolate HVAC system air vents to prevent contamination migration.

6. Place walk-off mat at work areas to prevent tracking of construction dust into surrounding areas.

7. Provide active means to prevent airborne dust from dispersing into atmosphere. HEPA vacuums, automatic self-closing construction doors, appropriate exhaust machines, debris chutes.

a. Clean work surfaces with HEPA vacuum.

b. Remove HVAC system isolation where work is complete.

c. Mop and/or wipe work surfaces with approved disinfectant.

C la ss

II

I In a dd iti on to C la ss

II

1. Inspect adjacent areas for dust migration and correct immediately.

2. Tightly cover material transport receptacles/carts. Contain construction waste in tightly covered containers before transport.

3. Maintain negative air pressure within work site utilizing HEPA air filtered machines.

4. Disinfect tools and equipment prior to entry and exit from sterile and invasive procedure areas.

5. Complete all critical barriers, i.e. sheetrock, plywood, plastic to seal area from non-work area or implement control cube method (container with suitable cover and sealed connection to work site with HEPA vacuum for cleaning prior to exit).

a. Clean remaining impacted areas with HEPA vacuum.

b. Mop/Wipe remaining impacted areas with approved disinfectant.

c. Tightly cover material transport receptacles/carts. Contain construction waste in tightly covered containers before transport.

d. Do not remove barriers from work areas until completed project is thoroughly cleaned and inspected by the VA Safety Officer and Infection Control Practitioner.

e. Clean & remove barrier materials carefully to minimize spreading of dirt and debris associated with construction.

C la

IV

In a dd iti on to C la

III

1. Temporarily relocate staff/patients away from impacted areas if possible.

2. Seal holes, pipes, conduits, penetrations and barrier punctures to prevent dirt and fine dust migration.

3. All personnel entering the work site are required to wear shoe covers. Shoe covers must be removed each time the worker exits the work area.

4. d. Either construct anteroom and require all personnel to pass through this room and be HEPA vacuumed clean before leaving the work site or optionally require all personnel to wear cloth/paper coveralls that are removed each time the worker exits the work area.

This Permit MUST remain posted during project

4288-R sample