Requests for Information-07-22-2022-responses.pdf

July 22, 2022

Requests for Information

Solicitation 12505B22R0007

Question 1: Can we work 10‐hour days on this job, Monday thru Thursday or does it have to be 8 hours per day Monday thru Friday?

Answer 1: See revised response below, revisions in blue.

Contractor’s on‐site working hours will be established during pre‐construction meeting of the project. For pricing purposes, Contractor shall assume:

Facility normal “open” hours shall be considered 6:00 am to 6:00 pm (business hours are considered 8 am to 4:30 pm). Unless noted otherwise, the performance of the Contractor’s on site efforts will occur during the facility normal “open” hours.

The abatement / removal of existing floor tile and installation of new flooring in corridors / hallways shall be scheduled and performed during the facility’s “open” hours. The abatement / removal of existing floor tile and installation of new flooring in corridors / hallways shall be scheduled and performed during the facility’s “off” hours. During corridor work, code‐compliant exit paths shall be maintained to the greatest extent possible. Contractor shall coordinate the impact of corridor work on code‐compliant exit paths with the Government and notify the Government when code compliant exit paths are not available.

The Contractor shall determine their working hours needed to comply with the above requirements.

Question 2: VAT/mastic abatement: Can we use chemicals to remove the mastic or do we need to grind the floor.

Answer 2: See revised response below, revisions in blue.

Removal of mastic by grinding or by chemicals will not be considered an acceptable method by the Government. The proposal shall be based on the contractor employing grinding methods with appropriate equipment and dust control measures to remove the mastic. Methods employed shall be coordinated with manufacturer of new flooring system and shall include all preparation efforts such that the warranty on new flooring system is provided in accordance with the Statement of Work and Solicitation

Documents.

Question 3: Do we need a CPIH/CIH on site during all abatement activities? Likewise, is that cost borne by the abatement contractor?

Answer 3: The Contractor shall engage CPIH for asbestos abatement efforts indicated in the

Statement of Work. All costs for CPIH shall be included in the Contractor’s pricing.

Question 4: There are several areas where the pipe abatement is above the ceiling. Do we open enough of the ceilings to access the pipe to be abated or do we have to remove the entire ceiling?

Answer 4: See revised response below, revisions in blue.

The Contractor shall determine the amount of ceiling removal / reinstallation needed to access piping for specified work (i.e. abatement, new installations, etc). This is typical for both suspended, accessible ceilings and hard type ceilings. Ceilings, that are disturbed in performance of the project, shall be restored to “like new” condition that match surrounding ceilings.

For existing 2’ x 4’ suspended ceilings, Contractor shall reuse and re‐install existing ceiling tiles that are in good condition. Contractor shall furnish seventy (70) new 2’ x 4’ ceiling tiles. Where removed ceiling tile is in bad condition, Contractor shall replace with new ceiling tile. Contractor shall turn over to Owner any of the new ceiling tiles that are not used. New ceiling tile shall be 2’ W x 4’ W x 5/8” D, medium texture type, Armstrong “605 Fire Resistive with Ceramaguard Humiguard Max” series or approved equal.

See Question / Answer 15 for additional information on restoring hard type ceilings.

Question 5: When is this work expected to take place and how much time do we have to complete our portion of work?

Answer 5: The period of performance is indicated in the Solicitation. In accordance with the Statement of Work, Work shall be sequenced to minimize the downtime of the buildings. All materials shall be on‐site and ready for installation before proceeding with any demolition of the existing buildings. Once “on‐site” work commences, the work shall be completed without interruption to avoid jeopardizing ongoing research.

Question 6: Who will be removing the lay‐in ceiling?

Answer 6: The removal and re‐installation of ceiling shall be part of the Contractor’s scope of work. Contractor shall include all costs the removal and re‐installation of ceiling in their pricing.

Question 7: Does the abatement contractor determine the number of containments it can use?

Answer 7: See revised response below, revisions in blue.

Contractor shall coordinate the number of containment areas with the Government prior to proceeding with on‐site activities. Contractor shall determine the number of containment areas needed for performance of the project. See Answer 11 for additional information on access to Building 1 and Building 8. For pricing purposes, the Contractor shall assume a minimum of two (2) containment areas for Building 1 and a minimum two (2) containment areas for Building 8 along with additional containment areas at each building as needed to maintain code‐compliant exit paths from each building. Contractor shall provide all installations needed to maintain code‐compliant exit paths at all times during the performance of all work activities, unless noted otherwise.

Question 8: Please clarify project requirements on moving of equipment and furniture in work areas.

Answer 8: Contractor shall provide the moving of equipment, furniture, furnishings, etc. to and from the work areas and shall provide storage of these items during the performance of the project. See Question / Answer 11 for information regarding contractor access to Building 1 and Building 8.

Contractor shall include the cost to provide two (2) nominal 40’ L x 8’ W x 8’ H storage trailers for the storage of the above items. Storage trailers shall be placed in facility’s parking lot at location coordinated with the Government.

Contractor shall include the cost of twenty (20) eight‐hour work days of a “4‐ man” moving crew for the moving of the above items.

The moving of chemicals shall be by the Government. Contractor shall coordinate the moving of chemicals with Government such that the chemicals are moved in an appropriate time frame. Contractor shall not include any costs in their proposal for moving chemicals.

Question 9: Where hard ceiling is to be demolished for access to asbestos pipe covering, should the contractor patch and reinstall the equal material? Should the contractor demolish the entire hard ceiling in the specified room? Should the contractor demolish the entire hard ceiling and reinstall a specified ceiling? Please clarify and provide the applicable specification section as needed.

Answer 9: See Question / Answer 4 and Question / Answer 15.

Question 10: Is there a location/room in the facility that can be used for an office space?

Answer 10: Contractor shall include furnishing a trailer for the project’s superintendent office in their proposal. Contractor shall include all costs to provide temporary utilities needed for the trailer. The awarded contractor and Government may re‐evaluate the potential of using a facility space during pre‐construction meeting.

Question 11: Will all designated work areas be allowed to be closed for construction throughout the duration of the project?

Answer 11: Contractor shall assume that they will have access to only Building 1 or Building 8 during a specific time period (both buildings cannot be closed simultaneously and one building shall remain fully operational and occupied). Contractor shall schedule and sequence their work to meet this requirement for Building 1 and Building 8.

Contractors can have complete access to Building 1 or Building 8 during the scheduled time period (i.e. one building can be closed for construction). Work in Building 2 and

Building 4 is in specific selected spaces. Building 2 and Building 4 shall remain fully operational and occupied during the performance of the work. Contractor shall coordinate with Government and provide construction barriers / containment as needed for their work in Building 2 and Building 4.

Question 12: Will a specification section be provided for the new roofing material as indicated in the

SOW?

Answer 12: See Photo 9 in Statement of Work. Contractor shall abate and remove asbestos containing tar material at piping chase (curb) in attic space. Contractor shall remove existing metal cover of piping chase (curb) and replace with new. New metal cover plate shall match existing in size, configuration, and material type and thickness. New cover plate shall be multiple piece type to allow installation without disturbing existing piping.

Question 13: Is it possible to be provided with an updated plan set with a room schedule and square footages?

Answer 13: A room schedule and square footages is not available. The following drawings are attached to this document, contractors shall use these drawings as resource to determine square footages and to determine the sizes / configuration of existing ductwork systems and piping systems:

Sheet 3‐1 (dated April, 1958) – Building 1 ‐ Floor Plan

Sheet 5‐1 (dated April, 1958) – Building 1 – Interior Finish Schedule

Sheet 9‐10 (dated April, 1958) – Building 1 – Heating and Ventilation Plan

Sheet A‐3 (dated January, 1970) – Building 8 ‐ Floor Plan

Sheet A‐12 (dated January, 1970) – Building 8 ‐ Reflected Ceiling Plan

Sheet M‐5 (dated January 1970) – Building 8 – Ventilation and Air Condition Plan

Please note:

On 1970 drawings, Add Alt #1 was not constructed.

On Sheet A‐12; 2’ x 4’ acoustical tile ceiling is installed where 2’ x 4’ board ceiling is indicated.

See Sheet 3‐1, the ceiling in Headhouse 13 is now suspended, 2’ x 4’ ceiling with hard type (plaster ceiling above). Plaster ceiling shall be removed in a neat, workmanlike manner for the performance of the project. Restoration of the plaster ceiling above the 2’ x 4’ is not needed. See Answer 4 for additional information.

Question 14: Will a specification section be provided for the new HVAC ducts as indicated in the

SOW?

Answer 14: Building 1: The abatement / removal of ACM ductwork and replacement with new as indicated on Sheet A‐2 in Appendix C of the Statement of Work (for Lab 32, 38, and 40) have been completed by the Government and shall not be included in the scope of this project.

Building 8: Contractor shall abate and remove ACM ductwork systems as indicated on

Sheet M5 in Appendix C of the Statement of Work (indicated as asbestos cement in

Ductwork Legend on Sheet M5). Removal of ductwork system shall include the removal of associated mounting hardware. Contractor shall replace the removed ductwork system with new. New ductwork system shall be sized and configured to match the removed system (pricing shall be based on the configuration and sizing indicated on Sheet M5 dated January, 1970). The replacement shall include 6” diameter drop / 6” diameter damper at each exhaust diffuser and exhaust riser to exhaust fan. Existing 6” diameter flexible ducting at each exhaust diffuser shall be removed and re‐installed to accommodate the ductwork system replacement.

New ductwork systems at Building 8:

New round duct shall be stainless steel, spiral type (Type 304 or Type 316) with welded elbows and fittings.

New rectangular duct shall be stainless steel type (Type 304 or Type 316) with welded seams, joints, and fittings.

New ductwork system installation shall include the furnishing and installation of new mounting hardware for secure installation of the new ductwork system. New mounting hardware shall be sized / designed for the application and shall be provided at spacing in accordance with industry standards and recommendations.

New ductwork system shall include turning vanes and associated components to provide efficient air transfer (flow).

New ductwork systems shall not be insulated.

Contractor shall provide a product data / shop drawing submittal on the materials and components of the new ductwork system.

Question 15: Government clarification on restoring hard ceilings and walls.

Answer 15: When existing “hard type” ceiling / wall construction is disturbed in the performance of the project, the construction shall be restored to a “like‐new” condition that matches and blends with surrounding surfaces. The installation shall include, but not limited to:

Contractor shall furnish and install new gypsum board for the restoration. New gypsum board shall be installed in thickness and layers as needed to plane out with surrounding surfaces while taking into account the specified Level 5 finish.

Contractor shall cut and fit new gypsum board in neat, workmanlike manner; the gap between new gypsum board and existing construction shall not exceed 1/8”.

o New gypsum board shall be secured to framing at a nominal spacing of 12” on center except nominal spacing of 8” shall be provided at joints.

o At top of wall, cut gypsum board short of full height to provide ½” reveal.

o At top and bottom of walls, furnish and install metal L bead. Attach L bead to gypsum board using spray adhesive and staples.

Contractor shall furnish and install gypsum board joint tape at all joints.

Contractor shall fill and finish restored construction to provide a Level 5 finish in accordance with the recommendations of the Gypsum Association.

o Apply paper tape (not fiberglass) to each joint, inside corners and over bead flanges.

o Provide float finish over existing construction to blend and match existing.

Contractor shall prime and paint the restored construction to match adjacent surfaces. At a minimum, apply one coat of primer and two coats of finish paint.

Question 16: Government clarification on insulating of domestic water piping.

Answer 16: New pipe insulation and jacket on domestic water piping shall be the same as specified for “Heating Hot‐Water Supply and Return”, see Specification Section 23 07

00 for additional information.