SCOPE OF WORK

Red Rock Canyon NCA Administration Building

Phase 2 Building Repairs

Southern Nevada District, Las Vegas, Nevada

June 2026

Bureau of Land Management

Nevada

TABLE OF CONTENTS

1.0 INTRODUCTION

2.0 BACKGROUND

3.0 PROJECT MANAGEMENT AND COORDINATION

4.0 SUMMARY OF WORK

5.0 EXECUTION OF FIELD WORK

6.0 REMOVE AND REPLACE INDOOR CARPETING

7.0 REMOVE AND REPLACE KITCHEN FLOOR

8.0 AIR DUCT CLEANING

9.0 REMOVE AND REPLACE ENERGY RECOVERY UNIT (ERU)

10.0 OFFICE CUBICLES AND WORKSTATIONS

11.0 PAINTING

12.0 SITE AND BUILDING CLEANUP

13.0 SITE MANAGEMENT

14.0 NATIONAL ENVIRONMENTAL POLICY ACT (NEPA)

APPENDICES

Appendix – A Exhibits 1 thru 4

Appendix – B Existing Facilities - Photographs

Appendix – C As-Built Mechanical Design Sheets

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1.0 INTRODUCTION

The purpose of this Statement of Work (SOW) is to define the requirements for Phase 2 repairs and improvements to the Red Rock Canyon National Conservation Area Administration Building (Building), the nearby parking lot restroom facility, and the associated parking lot retaining walls (knee walls), ensuring these structures maintain integrity, functionality, and compliance with applicable standards and regulations.

Red Canyon National Conservation Area (RRNCA) is located approximately 4 miles west of Sky Vista

Boulevard in the community of Summerlin. The Building is located at latitude: 36.13567° / longitude:

-115.42731° (Exhibit 1).

1.1 Core Repairs Overview

The BLM requires the Contractor to provide all labor, materials, equipment, and supervision necessary to renovate the Administration Building and associated site structures. Phase 2 of this project completes the essential improvements needed to return these facilities to full operational condition following prior remediation and mechanical upgrades. This phase addresses remaining deficiencies that affect functionality, safety, and long-term performance of the Building and nearby site components.

The scope of Phase 2 includes replacing worn interior finishes and damaged flooring, cleaning and restoring mechanical air-distribution components, installing updated systems furniture, and repairing deteriorated exterior elements. Work also extends to the adjacent parking lot restroom facility and the surrounding retaining walls, which require repainting and stucco repairs to reestablish protective integrity and weather resistance.

2.0 BACKGROUND

The Building was originally designed in 1978 and constructed in the early 1980s with an area of approximately 6,655 sq. ft. It later underwent a change-of-use renovation and a small expansion in 2007–

2008. The interior first floor now totals 7,120 sq. ft., with an additional 164 sq. ft. second-floor mezzanine. The exterior floor area under roof is 1,200 sq. ft., bringing the total building square footage to

8,484 sq. ft. (Exhibit 2). The Building also includes a 2,470 sq. ft. crawl space. Building occupancy is

Group B, and construction type is Type V-B (Not Rated).

The parking lot restroom facility includes men’s and women’s restrooms, a unisex room, and a janitor’s room. The structure is configured as two mirror-image sides, each approximately 490 sq. ft. in area, separated by a 20-foot open space with an overhead wood trellis. In total, the restroom facility encompasses approximately 1,704 sq. ft.

Exhibit 2 shows the locations of the Building and restroom facility.

2.1 Location and Access

Contractors must pass through a visitor pay station with access to the building via paved road as shown on Exhibit 2. On an annual basis approximately 1,000,000 persons pass through the fee station. Spring, fall, holidays and weekends bring heavy visitations. Coordinate with Government for deliveries during heavy visitation times.

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2.2 Current Building Condition

Recent improvements to the Building include remediation of a severe rodent infestation, installation of new roof sections, repair of interior water damaged areas and replacement of heat pumps and fan coil units.

Energy recovery unit and solar power water heater operations have been hampered by component breakdowns, a lack of maintenance and system complexity.

The Building’s rolled carpeting is badly worn, stained, and no longer suitable for an office environment, requiring removal and replacement. The kitchen floor and subfloor are dilapidated and broken, presenting both functional and safety concerns, requiring complete removal and replacement.

The exterior stucco and paint on the Building and Facility exhibit are weathered and deteriorated, showing signs of cracking and fading. Both structures require repair and painting to restore protective and aesthetic qualities.

The HVAC air ducts associated with the energy recovery unit, which provide conditioned return air, were likely installed during the 2006 expansion and have never been cleaned. Combined with the dusty ambient outdoor environment and a recent rodent infestation, the ducts present significant health and air quality concerns. It is imperative that all interior ducts be thoroughly cleaned and sanitized prior to reoccupying the building.

2.3 Occupancy and Use

The Administration Building is designated for Bureau of Land Management (BLM) administrative purposes and is designed to accommodate up to 46 staff members. Typical hours of operation are between

6:00 a.m. and 8:00 p.m. The building is currently unoccupied and will remain vacant until all Phase 2 repairs have been completed.

The stand-alone restroom facility operates under the same hours and serves as a critical amenity for visitors. Located between parking areas, it experiences extremely high traffic from individuals arriving in personal vehicles, tour buses, school buses, and other commercial tour vehicles. Red Rock Canyon receives approximately 1,000,000 visitors annually, and this facility likely serves 60–65% of those visitors.

2.4 Existing Operations

Certain areas of the Building house equipment and systems that provides critical services to multiple on-site facilities including restrooms, the fee station and visitor center. These systems must remain operational and protected during the project. If temporary shutdowns are required, the Contractor shall provide the Government with at least one weeks advance notice to allow operational adjustments.

2.5 Critical Systems

a) Potable water storage and distribution pumping.

b) Information technology equipment including phones, computer servers, building automation systems and communication antennas.

c) Hot water system – Inoperative.

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d) Fire suppression system – Inoperative.

e) Electrical panel boards and service entry sections – panel board and service entry sections -

Fully operational.

f) Building energy recovery system – Partially operational.

g) Wastewater systems – Full operational.

2.6 Site Electrical Power

Critical exterior equipment adjacent to the Building include, NV Energy transformers, a current transformer and meter cabinet and the sites photovoltaic main isolating disconnect (Exhibit 11 and Photo

13).

2.7 Temporary Facilities

Temporary power is currently provided to three office trailers located in the lower parking area approximately 325 feet south of the Building. The trailers serve as office space for BLM employees and a volunteer non-governmental organization. Power to the trailers is routed from the Building main power panels to a power pole located approximately 20 feet south of the Building, then overhead to the trailers.

Trailers, power poles and overhead line are shown on Exhibit 10 and Photos 10, 11, and 12.

2.8 Site Constraints

The area surrounding the Building can become congested with vehicular and pedestrian traffic. School and tour busses regularly use an area near the Buildings as a drop off zone. BLM provides walking tours along a path that passes just north of the Buildings north side.

The east, north and west areas adjacent to the building can be used as needed for material and equipment laydown and are shown on Figure 2, Appendix A of the NEPA Categorical Exclusion Documentation

(pdf page 21).

2.9 Seasonal RRC hours:

a) November thru February 6 a.m. – 5 p.m.

b) March 6 a.m. – 7 p.m.

c) April thru September 6 a.m. – 8 p.m.

d) October 6 a.m. – 7 p.m.

To facilitate construction activities and material deliveries, contractors will be permitted to bypass the

Red Rock Canyon fee station. Coordination with BLM staff is required to ensure delivery vehicles are properly identified and scheduled to avoid conflicts with visitor traffic. Drivers should follow designated routes and comply with posted speed limits and safety protocols while on site.

2.10 Building Utilities

The Administration Building’s mechanical systems include an energy recovery unit that provides evaporative cooling through a swamp cooler function and heat transfer capability linked to a solar water

Red Rock Canyon NCA Administration Building – Phase 2 Repairs – June 2026 Page 4 of 45 heating system. While the energy recovery unit remains operational, the solar water heating system is currently non-functional. Its water source—local groundwater—is high in mineral content (hard water), which has contributed to scaling and system failure over time.

As part of Phase 1 of the renovation, all heat pumps and fan coil units were removed and replaced with new, modern units to improve efficiency and reliability. Electrical service to the building is adequate for current and anticipated loads, with no known limitations.

The site relies on two separate septic systems: one serving the Administration Building and another, much larger system, supporting public restrooms. The restroom system includes two transfer pumps and six discharge pumps to handle heavy visitor usage. Both systems perform reliably when properly maintained, and any repair work should ensure continued functionality and access for maintenance.

3.0 PROJECT MANAGEMENT AND COORDINATION

Project management and coordination are essential to ensuring that all construction activities proceed in an organized, efficient, and clearly documented manner. This section outlines the processes required to manage submittals, coordinate work across disciplines, and maintain effective communication throughout the project.

3.1 Information Submittals

Prepare and submit information for materials, products, procedures, etc. as noted throughout this document. Submit information with a titled cover sheet to allow for tracking of the submittal. Submittals to be submitted and numbered sequentially starting with Submittal 001. Contractor to keep a running list of submittals which is to include, but not limited to, the submittal number, submittal date, returned date, and response of the Government in reviewing the information.

3.2 Coordination Procedures

Coordinate construction operations included in different sections of this Statement of Work to ensure efficient and orderly installation of each part of the work. Coordinate construction operations, included in different sections that depend on each other for proper installation, connection, and operation.

a) Schedule construction operations in sequence required to obtain the best results where installation of one part of the work depends on installation of other components, before or after its own installation.

b) Coordinate installation of different components with other contractors to ensure maximum accessibility for required maintenance, service and repair.

c) Make adequate provisions to accommodate items scheduled for later installation.

d) Where availability of space is limited, coordinate installation of different components to ensure maximum performance and accessibility for required maintenance, service, and repair of all components including mechanical and electrical.

3.3 Project Meetings

a) Schedule and conduct meetings and conferences at project site, unless otherwise indicated.

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1) Attendees: Inform participants and others involved, and individuals whose presence is required, of date and time of each meeting. Notify Government of scheduled meeting dates and times.

2) Agenda: Prepare the meeting agenda. Distribute the agenda to all invited attendees.

3) Minutes: Record significant discussions and agreements achieved. Distribute the meeting minutes to everyone concerned, including Government, within (7) days of meeting.

b) Preconstruction Conference: Schedule a preconstruction conference before starting construction, at a time convenient to the Government, but no later than 15 days after Notice to Proceed. Hold the conference at project site or another convenient location. Conduct the meeting to review responsibilities and personnel assignments, review required work, project drawings, Statement of

Work, construction schedules, payroll, payments, and administrative provisions of the contract. Be prepared to summarize and explain procedures planned for the project and present specified preconstruction submittals.

c) Preinstallation Meetings: Conduct a preinstallation meeting at the project site before each construction activity that requires coordination with other construction.

1) Agenda: Review progress of other construction activities and preparations for the particular activity under consideration, including; deliveries, submittals, review of mockups, time schedules, and weather limitations.

2) Record significant meeting discussions, agreements, and disagreements, including required corrective measures and actions.

3) Reporting: Distribute minutes of the meeting to each party present and to parties who should have been present.

d) Progress Meetings: Conduct progress meetings at biweekly intervals. Hold the meetings at the project site. Coordinate dates of meetings with preparation of payment requests. Additional progress meetings may be requested by either the Government or Contractor.

1) Attendees: In addition to representatives of Government, each contractor, subcontractor, supplier, and other entity concerned with current progress or involved in planning, coordination, or performance of future activities shall be represented at these meetings. All participants at the conference shall be familiar with the project and authorized to conclude matters relating to the work.

2) Agenda: Review and correct or approve minutes of previous progress meeting. Review other items of significance that could affect project progress. Include topics for discussion as appropriate to status of project.

i) Interface requirements.

ii) Sequence of operations.

iii) Status of submittals.

iv) Deliveries.

v) Access.

vi) Site utilization.

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vii) Temporary facilities and controls.

viii) Work hours.

ix) Hazards and risks.

x) Red Rock visitor safety.

xi) Progress cleaning.

xii) Field observations.

xiii) Requests for information/interpretation.

3) Minutes: Record the meeting minutes.

4) Reporting: Distribute minutes of the meeting to each party present and to parties that who should have been present.

5) Schedule Updating: Revise Contractors construction schedule after each progress meeting where revisions to the schedule have been made or recognized. Issue revised schedule concurrently with the report of each meeting.

3.4 Requests For Interpretation (RFI)

a) Procedure: Immediately on discovery of the need for interpretation of the contract documents, and if not possible to request interpretation at project meeting, prepare and submit an RFI in the form specified:

1) RFI’s shall originate with Contractor. RFI’s submitted by entities other than the Contractor will be returned with no response.

2) Coordinate and submit RFI’s in a prompt manner to avoid delays in Contractor’s work or work of subcontractors.

4.0 SUMMARY OF WORK

Phase 2 consists of interior, mechanical, and exterior improvements to the Building and ancillary site structures necessary to return these facilities to a fully serviceable condition.

The major items of work included in Phase 2 are summarized below:

a) Carpet Removal and Replacement.

b) Kitchen Floor Removal and Replacement.

c) Air Duct Cleaning.

d) Removal and Replacement of the Energy Recovery Unit (ERU).

e) Installation of New Office Cubicles and Workstations.

f) Exterior Painting and Associated Repairs.

Note: The Government possesses as-built drawings of the Building that are from the 2006/2007

Red Rock Canyon NCA Administration Building – Phase 2 Repairs – June 2026 Page 7 of 45 remodel and Building design drawings from 1978. Due to the size of these files, they will be provided to the Contractor upon request using the Contractors preferred method file transfer.

5.0 EXECUTION OF FIELD WORK

The intent of this statement of work is to provide for the completion of the work in every detail described herein which includes all incidental and related work and services. The Contractor shall have adequate plant to mobilize their forces, equipment and materials as may be reasonably required to complete the work in accordance with the specifications and terms of the contract.

The Contractor shall perform all tasks in a systematic and coordinated manner to minimize disruption and ensure quality results. Work shall be executed promptly and efficiently to avoid unnecessary delays. All activities must comply with project specifications, applicable safety standards, and will be closely coordinated with Government representatives to address issues quickly and maintain steady progress toward timely completion.

Final inspections will be conducted jointly by the Government and Contractor to verify compliance with all specifications, ensure quality workmanship, and confirm readiness for acceptance.

6.0 REMOVE AND REPLACE INDOOR CARPETING

The Contractor shall remove all existing rolled carpeting and underlayment from designated areas and prepare the subfloor for installation of new carpet tiles. Carpet tiles shall be installed in accordance with approved specifications to ensure a durable, professional finish that meets the functional and aesthetic requirements of the Administration Building. All work shall be performed in a manner that minimizes disruption, maintains alignment and adhesion standards, and complies with applicable safety and quality requirements. Exhibit 3 shows where Building carpeting is located. Photos 1, 2, and 3 show typical locations where the existing carpet is located.

6.1 Methods of Materials Qualification

To demonstrate that the materials to be used in this project conform to these specifications, the Contractor may pursue any of the following:

a) Certificates of compliance with specification requirements signed by an authorized officer of the manufacturer or processor of approved trade association involved. Such certificates shall show the name and address of the Contractor and the name and location of the project. The certificate shall be accompanied by all supporting product data so that adequate evaluation by the Government can be made.

a) Labeling by the manufacturer on unbroken/unopened containers.

b) Official marking or labeling by recognized grading organization or national code association indicating compliance.

6.2 Submittals

To ensure the Government can fully evaluate and approve all carpet-related products and installation

Red Rock Canyon NCA Administration Building – Phase 2 Repairs – June 2026 Page 8 of 45 materials, the Contractor shall submit the following documentation and samples prior to ordering or installation.

a) Carpet Tile (Catalog cut and sample).

b) Carpet Adhesive (Catalog cut and MSDS sheets).

c) Transition pieces if any (Transition shall be vinyl or rubber 1-½ “ wide).

d) Product Data: Manufacturer data for carpet tiles, adhesives, and accessories.

e) Samples: Minimum 3 carpet tile samples showing color, pattern, and construction for Government selection. Samples shall be a minimum of 6-inches long.

f) Installation Instructions: Manufacturers’ written installation procedures.

g) Warranty: Manufacturer’s standard commercial flooring warranty.

Note: Samples shall be 6” (minimum) long.

6.3 Carpet Tile

Carpet shall be recyclable nylon carpet tile (24 inch by 24 inch) meeting the specifications listed herein, and shall be installed in accordance with the Carpet and Rug Institute standard CRI – 104 Standard for

Installation of Commercial Carpet, and in accordance with manufacturer’s recommendations. Carpet shall be suitable for gluing down. Pre-Glued carpet will not be accepted. Carpet must be 100% Recyclable and shall have a fiberglass-reinforced modular tile backing system with recycled content.

6.4 Carpet Specification

Carpet tile shall be commercial-grade and of a dark, neutral gray/black tone consistent with “carbon charcoal,” or equivalent.

Final color and pattern selection shall be made by the Government based on submittals.

a. Construction Level Loop

b. Fiber System Nylon

c. Dye Method Solution

d. Gauge 1/10

e. Stitches per Inch Min 9.0 per inch

f. Pile Thickness Min 0.010 inches

g. Total Thickness 0.259 Inches

h. Pile Weight Min 20 oz

i. Density Min 6,900 oz per cubic yard

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j. Product Size 24 inches by 24 inches

k. Total Weight Min 94 oz per square yard

l. Weight Density Min 138,400 ox per cubic yard

m. Primary Backing Polypropylene

n. Secondary Backing Synthetic/Composition

o. Backing Recycled Content Min 40%

p. Radiant Panel ASTM E-648 Class 1

q. NBS Smoke Chamber Test Less than 450 (flaming)

r. Electrostatic Propensity 3.5 kV or lower

s. Warranties 10 year commercial stain warranty

6.5 Quality Assurance

a) Installer shall have a minimum of 2-years of experience installing commercial carpet tile.

b) Installation shall comply with comply with CRI 104 and manufacturer requirements.

7.6 Delivery, Storage, and Handling

a) Deliver materials in original unopened packages with manufacturers label intact.

b) Store materials in conditioned space and protect from damage, moisture, and contamination.

6.7 Quantities

All dimensions and quantities are approximate. The Contractor bears full responsibility for verifying actual quantities prior to ordering or installation.

6.8 Temporary Utilities and Controls

Temporary utilities (electricity) will be provided by the Government at no cost to the Contractor. The

Contractor shall provide and remove, at no cost to the Government, all additional equipment and other apparatus necessary to serve the work site. The Government makes no guarantee as to quality, quantity or continuity of such services and will not be liable for any effects these services have on Contractors’ equipment or the progress schedule.

6.9 Execution

a) When removing cove bases, the Contractor shall take care shall take necessary precautions to ensure that walls and paint are not damaged during the removal. Any and all damages to the wall shall be repaired by the Contractor at no additional cost to the Government.

b) Verify substrates are clean, dry, smooth, level, and structurally sound.

c) Report conditions that could adversely affect installation to government.

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d) Do not begin installation until deficiencies are corrected.

e) Prepare substrates in accordance with CRI 104 and manufactures requirements.

f) Remove dust, debris, oils, curing compounds, adhesives, and contaminants.

g) Install carpet tile in accordance with CRI 104 and manufacturers written instructions.

h) Maintain consistent orientation, dye lot, and pattern alignment. Do not mix dye lots in same area.

i) Install modular carpet tile using full spread, low-VOC releasable pressure-sensitive adhesive to allow for individual tile replacement, per manufactures recommendations.

j) Provide tight seams and secure adhesion without visible gaps or irregularities.

k) Fit neatly at fixtures, door frames, columns, and utility penetrations.

l) Transitions shall be heavy duty EPDM rubber reducers. Transition types shall be selected to maintain smooth, ADA-compliant walking surfaces and match expected wear conditions. Transitions to be mechanically or epoxy-bonded to the concrete.

6.10 Cleaning and Protection

a) Contractor shall thoroughly clean each room upon completion of work to include the following:

1) Vacuum to remove all debris, scraps, lint, etc.

2) Wipe down vinyl cove base and transition strips to remove dirt, dust grime, and excess glue and glue residual.

3) Wipe down horizontal surfaces that might have become dirty/dusty during carpet installation.

4) Protect installed carpet tile from traffic and construction activities until final acceptance.

6.11 Warranty

a) Provide 1-year installation from date of Government acceptance.

b) Provide manufacturers standard commercial flooring warranty.

6.12 Resilient Base and Accessories

Provide resilient rubber base for interior walls where carpet is installed, including gypsum wall boards and retrofit stucco walls.

a) General

1) References:

i) ASTM F1861 – Resilient Wall Base, Type TP (thermoplastic).

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ii) Group 1, Style B (cove).

iii) CRI 104 – Standard for Installation of Commercial Carpet.

b) Submittals:

Product Data – Manufacturers specification, installation instructions and maintenance requirements.

Samples – 12-inch length of wall base in specified color and profile.

c) Warranty:

1) Manufacturer’s Warranty – Minimum 5 years against defects in materials.

2) Installers Warranty – Minimum 1years against installation defects.

d) Products

1) Materials – Rubber Base Wall

2) Height: 4-inches.

3) Thickness: 1/8 inch.

4) Color: Black, homogenous throughout.

5) Profile: Coved for carpeted area.

e) Adhesives

Manufacturer approved adhesive suitable for gypsum board and stucco wall with heavy lace texture.

High-tack or contact adhesive recommended for stucco walls. Coordinate with Government prior to application on stucco wall surface.

6.13 Execution

a) Examination:

1) Remove existing rubber resilient base in carpeted areas.

2) Verify wall surfaces are clean, dry, and free of dust or contaminants.

3) For stucco walls: Fill deep voids or irregularities with patching compound for smooth adhesion.

b) Installation:

1) Apply adhesive per manufacturers instructions.

2) Press wall base firmly into place; roll with hand roller to ensure full contact.

3) Seal joints tightly; avoid gaps.

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4) For stucco walls: Use high performance adhesive and consider priming if surface is chalky.

c) Cleaning and Protection

1) Remove excess adhesive immediately.

2) Protect installed wall base from damage until project completion.

7.0 REMOVE AND REPLACE KITCHEN FLOOR

The kitchen floor is approximately 230 square feet in size with a small counter area. The existing vinyl tile flooring and subfloor are badly damaged and require removal and replacement. Refer to Exhibit 3 for its location and Photo 4 for the existing state of the floor.

The scope includes the complete removal of the existing vinyl tile flooring and the underlying wood subfloor, followed by installation of a new flooring system that meets durability, safety, and aesthetic standards appropriate for the facility’s operational needs.

The Contractor shall furnish all labor, materials, equipment, transportation, disposal and supervision required to remove the existing kitchen flooring system and replace with new resilient vinyl tile flooring over a new wood subfloor.

Work includes;

a) Selective demolition of existing flooring, adhesive, base and damaged subfloor.

b) Inspection and replacement of wood subfloor ¾-inch plywood.

c) Installation of new vinyl tile flooring and resilient base.

d) Cleanup, protection of adjacent areas, and disposal of debris offsite.

7.1 Contractor Qualifications

Contractor shall have a minimum of 5 years of documented experience performing similar resilient flooring work including:

a) Vinyl composition tile or luxury vinyl tile installation.

b) Subfloor preparation.

c) Underlayment installation.

d) Adhesive application and leveling compound work.

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7.2 Demolition

a) Removal all existing vinyl tile flooring and wood subfloor panels in the designated kitchen area.

b) Protection:

1) Perform removal without damage to adjacent construction, framing, or utilities.

2) Protect walls, cabinets, and remaining finishes during demolition.

3) Removal Method:

i) Use mechanical or manual means appropriate for the material type.

ii) Leave framing undamaged and clean and ready for new subflooring.

7.3 Wood Sub-Floor Installation

a) ¾-inch plywood.

b) Exterior C-C Plugged.

c) Span rating as required for framing.

d) Fastening – Use 8d or 10d ring-shank nails or #8 or #10 wood screws, minimum length 2.5-inches.

Along panel edges fasten at 6-inches on center. Fasten at 12-inches on center within the panel field.

e) Adhesive – Apply construction adhesive to joist tops before placing plywood panels to minimize movement and squeaks. Adhesive shall comply with APA recommendations for subfloor installation.

f) Installation – Drive fasteners flush without breaking the plywood surface. Stagger panel joints and install panels perpendicular to joists.

g) Submittals:

1) Product data for plywood panel – grade, compliance with APA DOC PS-1, thickness, span rating, edge type, APA grade stamp documentation. Fastener and adhesive information.

7.4 Resilient Vinyl Tile Installation

a) Verify that substrates are smooth, clean dry and free of ridges, depressions, contaminants or conditions that will affect adhesion.

b) Verify that ambient temperature and humidity comply with flooring manufacturer requirements.

c) Do not begin installation until satisfactory conditions are corrected.

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d) Submittals:

1) Product Data – manufacturers data for tile, adhesives, primers and accessories. ASTM F1700 classification for tile. VOC compliance documentation.

2) Samples for Government approval – Submit (3) physical samples for each tiles color, tile style/pattern, tile finish (matte, semi-gloss)

3) Transition strips and resilient base.

5) Adhesive certification (VOC, compatibility, warranty compliance)

6) Maintenance Data – include cleaning instructions and after-installation cure time requirements.

Note: No material shall be purchased until Government provides written approval.

e) Warranty:

1) Manufacturers 10-year warranty - wear-through, manufacturing defects and premature deterioration under normal conditions.

2) Contractors 1-year workmanship warranty – loose tiles, bond failure, open joints or lifting edges, adhesive failure not caused by moisture intrusion.

3) Exclusions – damage from abuse, flooding, or improper maintenance is excluded.

f) Substrate Preparation

1) Clean substrate of dust, soil, adhesives, curing compounds, oils, and foreign materials that may interfere with bond.

2) Fill voids, joints and surface irregularities with patching or leveling compound to produce a smooth uniform substrate.

3) Sand or plane high spots and repair loose or damaged subfloor sections.

4) Apply manufacturer approved primer if required for adhesive bond.

g) Installation of Tile Flooring

1) Install resilient tile flooring according to manufacturer written instructions and in alignment with approved shop drawings, patterns and layout.

2) Mix and apply adhesive per manufacturer requirements for trowel size, open time, working time, and cure time.

3) Lay tile with tight joints, flush edges, and uniform contact with adhesives – no gaps, raised edges or lippage permitted.

4) Roll flooring immediately after placement using a 100-pound roller to ensure full adhesion.

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5) Maintain proper bond lines at walls, thresholds, and transitions.

h) Field Quality Control

1) Inspect completed installation for surface defects, misalignment, open joints, bubbles, or adhesive bleed-through.

2) Replace tiles that are damaged, out of alignment, or not fully bonded.

i) Cleaning and Protection

1) Remove excess adhesive and debris from the floor surface during installation.

2) Protect installed flooring from foot traffic, rolling loads moisture, and construction activities until substantial completion.

j) Resilient Rubber Base:

1) Provide 4-injch black rubber, coved profile with toe, complying with ASTM F1861 type TP, Style B.

2) Proper Wall Surface Preparation – Walls must be smooth, clean, dry and free of dust, loose paint, or contaminants that prevent adhesive bond.

3) Use Only Approved Adhesive – Apply adhesive recommended by the base manufacturer-required ranges before and during installation.

4) Maintain Temperature and Humidity Requirements – Condition base, adhesives, and room to manufacture required ranges before and during installation.

5) Install Base Plumb, Level, and Tight to the Wall – Press firmly into adhesive, ensuring no gaps top or bottom.

6) Make Clean, Accurate Cuts – Use sharp knives to create smooth vertical cuts at ends, door frames, and fixtures. Cuts must be clean to prevent peeling and curling.

7) Form Inside and Outside Corners Properly – corners must be either pre-molded or job-formed using heat or scoring to ensure a tight, durable fit.

8) Maintain tight Flush Joint – butt seams together neatly without gaps, overlaps or raised edges.

9) Roll the Base after Installation – Use a hand roller to ensure full adhesive contact and eliminate voids along the top edge, bottom edge and corners.

8.0 AIR DUCT CLEANING

The building HVAC infrastructure consists of two independent systems: a ductless, multi-zone heat-pump system serving several occupied areas, and a separate ducted system connected to the building energy recovery unit. The ERU associated ductwork has not been cleaned in more than 20 years. Refer to

Appendix A for the Buildings as-built HVAC plans. Photograph’s 5 thru 9 show the existing ducts.

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During recent facility assessments and corrective work, a significant rodent infestation was identified within various building spaces including adjacent to HVAC system components. Comprehensive rodent-remediation measures were subsequently completed, as documented in the projects rodent remediation and existing conditions reports.

Despite the completion of these efforts, contamination risks remain within the duct work due to the extended period of deferred maintenance and the presence of rodent activity. Therefore, thorough cleaning of all supply, return and exhaust ducts – including those associated with the Energy Recovery

Unit – is required to remove residual contaminants and restore acceptable indoor air quality.

Please refer to Appendix A for mechanical drawings that show the ducted system layout. Photos 5 through 10 shows return air ducts and floor grills, supply air ducts and outside air ducts.

8.1 Qualifications

a) HVAC System Cleaning Contractor

1) Supervisor – Shall be NADCA – Certified Air Systems Cleaning Specialist (ASCS) responsible for project oversight. Shall have 2 to 3 years of HVAC cleaning experience.

2) Inspector – Shall be NADCA – Certified ASCS, or NADCA – certified Ventilation Inspector

(CVI) to perform site inspections.

b) Licensing:

1) Submit copy of NADCA certification.

8.2 Information Submittals

a) Prior to any work being performed, the Contractor to make the following submittals to Government for review and approval.

1) Qualification data for Supervisor and Inspector.

2) Project existing conditions report.

3) Evaluations and recommendations, including cleanliness verification.

4) Duct cleaning work plan.

5) EPA/CDC approved disinfectants.

b) Provide post project report.

8.3 Project Management and Coordination

Coordinate all HVAC air duct cleaning activities with the work of the contractor responsible for removal of the existing energy recovery units and installation of a new 6-ton split system condenser and air handler. Duct cleaning shall be scheduled so that cleaning of all supply, return and associated ductwork occurs after demolition activities and prior to final installation and commissioning of the new equipment.

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The duct cleaning contractor shall cooperate with the mechanical contractor to ensure system components are accessible, sequencing is maintained, and no re-contamination occurs due to overlapping work.

8.4 Scope of Work

The Contractor shall provide all labor, materials, equipment, transportation, incidentals, and services required to complete the work as specified and in accordance with National Air Duct Cleaners

Association (NADC).

Clean all duct work associated with existing energy recovery unit including:

a) Supply-air ducts, including turning vanes to the energy recovery unit.

b) Return/exhaust air ducts and grills to the energy recovery unit.

8.5 Preparation

a) Inspect HVAC air-distribution equipment, ducts, plenums, and system components to determine appropriate methods, tools, and equipment required for performance of Work.

b) Perform “Project Evaluation and Recommendation” according to NADCA ACR.

c) Cleaning Plan: Prepare a written plan for air-distribution system cleaning that includes strategies and step by step procedures.

At a minimum include the following:

1) Supervisor contact information.

2) Work schedule.

3) Methods ad materials planned for each HVAC component type.

4) Required support from other trades.

5) Equipment and material storage requirements.

6) Exhaust equipment setup locations.

8.6 Existing Conditions Report

Prepare a written report that documents existing conditions of the systems and equipment. Include list of conditions detrimental to performance of the Work.

Proceed with work only after conditions detrimental to performance of the Work have been corrected.

Use the existing service openings as required for proper cleaning at various points of the HVAC system for physical and mechanical entry and for inspection.

Comply with NADCA ACR “Guidelines for Constructing Service Openings In HVAC Systems” section.

Mark the position of manual volume dampers and air-directional mechanical devices inside the system prior to cleaning. Restore them to their marked position on completion of cleaning.

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8.7 Cleaning

a) Comply with NADCA ACR, including items identified as “recommended”, “advised” and

“suggested”.

b) Perform electrical lockout and tagout according to Owner’s standards or authorities having jurisdiction.

c) Remove non-adhered substances and deposits from within the HVAC system.

d) Complete cleaning in accordance with Owner-Contractor agreed-upon scope of work.

e) Collect debris removed during cleaning. Ensure that debris is not dispersed outside the HVAC system during cleaning process.

f) Particulate Collections

1) For particulate collection equipment, include adequate filtration to contain debris removed.

Located equipment downwind and away from all air intakes and other points of entry into the building.

2) HEPA filtration with 99.97 percent collection efficiency for particles sized 0.3 micrometer or larger shall be used where the particulate collection equipment is exhausting inside the building.

g) Control odors and mist vapors during the cleaning and restoration process.

h) System components shall be cleaned so that all HVAC system components are visibly clean. Upon completion, all components must be returned to those settings recorded just prior to cleaning operations.

i) Clean all air-distribution devices, registers, grilles, and diffusers.

j) Ensure that a suitable operative drainage system is in place prior to beginning wash-down procedures.

8.8 Air Distribution Systems

a) Mechanically clean air-distribution systems specified to remove visible contaminants, so that the systems are capable of passing the HVAC System Cleanliness Tests (refer to NADCA ACR).

8.9 Debris Removal

Debris shall be removed from the Red Rock Canyon NCA according to applicable Federal, state and local requirements.

8.10 Mechanical Cleaning Methodology

Source removal Cleaning Methods: The HVAC system shall be cleaned using source-removal mechanical cleaning methods designed to extract contaminants from within the HVAC system and to safely remove these contaminants from the building. No cleaning method, or combination of methods, shall be used that could potentially damage components of the HVAC system or negatively alter the integrity of the system.

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a) Use continuously operating vacuum-collection devices to keep each section under negative pressure.

b) Cleaning methods that require mechanical agitation devices to dislodge debris that is adhered to interior surfaces of the HVAC system components shall be equipped to safely remove these devices.

Cleaning methods shall not damage the integrity of the HVAC system components or damage porous surface materials, such as duct and plenum liners.

c) Cleaning Mineral-Fiber Insulation Components

1) Fibrous glass thermal or acoustical insulation elements present in equipment or ductwork shall be thoroughly cleaned with HEPA vacuuming equipment while the HVAC system is under constant negative pressure and shall not be permitted to get wet according to NADCA ACR.

2) Cleaning methods used shall not cause damage to fibrous glass components and will render the system capable of passing the HVAC System Cleanliness Tests (refer to NADCA ACR).

3) Fibrous materials that become wet shall be discarded and replaced.

8.11 Cleanliness Verification

a) Verify cleanliness according to NADCA ACR, “Verification of HVAC system Cleanliness” section.

b) Verify system cleanliness after mechanical cleaning and before applying any treatment or introducing any treatment-related substance to the HVAC system, including biocidal agents and coatings.

c) Surface Cleaning Verification: Perform visual inspection for cleanliness. If no contaminants are evident through visual inspections, the HVAC system will be considered clean. If visible contaminants are evident through visual inspection, those portions of the system where contaminates are visible shall be re-cleaned and subjected to re-inspection for cleanliness.

d) Additional Verification

Perform surface comparison testing or NADCA vacuum test.

e) Prepare a written cleanliness verification report. At a minimum, include the following:

1) Written documentation of the success of the cleaning.

2) Site inspection reports, initialed by supervisor, including notation on areas of inspection.

3) Surface comparison test results.

4) System areas found to be damaged.

5) Photographic Documentation

6) Provide photographic documentation of HVAC system conditions before cleaning, during cleaning, and after cleaning.

7) Photo Frequency – Every 8 to 12 feet of duct run, at every change in direction, at every duct feature, i.e. dampers, vanes etc.

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8) Submit in JPEG format.

9) Minimum resolution: 8 megapixels or higher.

10) Each photo to have duct – supply, return, photo location and before, during or after designation.

11) Acceptance Criteria – Photos shall demonstrate removal of all visible debris and shall support visual verification required by NADCA ACR.

9.0 REMOVE AND REPLACE ENERGY RECOVERY UNIT (ERU)

The existing ERU serving the building has reached the end of its serviceable life and no longer provided reliable ventilation, temperature moderations, or energy recovery performance. The ERU system has shown progressive degradation, increased maintenance burden, and diminished operational efficiency over time, contributing to reduced occupant comfort and inconsistent airflow delivery throughout the conditioned spaces. The age of the ERU, combined with recurring operational issues, makes continued repair neither cost-effective nor consistent with current BLM building performance goals.

To restore dependable ventilation and improve overall system performance, this project replaces the obsolete ERU with a new high efficiency single phase split-system heat pump and associated components. This upgraded system shall provide improved reliability, simplified maintenance, and better efficiency while maintaining or closely matching the original design airflow distribution to protect indoor air comfort and acoustics.

The work includes full removal for the ERU, reconnection or modification of existing ductwork, installation of new mechanical components, and commissioning to ensure balanced well-distributed airflow.

Appendix A contains the as-built mechanical designs sheet for the existing ERU. Note that sheet AD-

M2.3 shows how the solar water heater system interconnects with the ERU. Photos 10 and 11 show the existing ERU. Note that Photo 12 shows return air, outside air and exhaust air ducting.

9.1 Existing Conditions

The existing ERU is a separate system that works in conjunction with a new Fujitsu ductless system composed of three (4) ton heat pumps and 14 air handling units with Edge Controller. Remote management of the system is performed through Johnson Controls Metasys.

The ERU system includes connected supply, return, exhaust and outdoor air ductwork, blowers, blower controllers, and multiple duct-mounted sensors, gauges, dampers, and actuators. The exact quantity and condition of these devices are documented and shall be field verified by the Contractor for purpose, need, condition and reusability with the new system.

The ERU serves an approximately 7,500 sq. ft. indoor area through the existing ductwork that will remain in service after the ERU is removed and replaced.

Site power is single phase only.

An HVAC contractor recently evaluated both the ERU and new ductless system. The contractor determined that based on existing duct sizes, the ductless system capacity and the anticipated building population, a split system would be adequate to replace the ERU.

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9.2 Scope of Work

a) Remove existing ERU with connected supply, return, exhaust, and outdoor air ductwork, and multiple duct-mounted sensors, gauges, dampers, and actuators indicated or reasonable inferred from the contract documents.

b) Install a new split-system HVAC unit (indoor air-handling unit and outdoor condenser/heat-pump unit) and connect to the existing duct system, including refrigerant and condensate piping, concrete pad, supports , and duct modifications.

c) Provide variable speed blowers and controllers compatible with the existing duct system formerly serving the ERU.

d) Provide all electrical power, grounding, and bonding from the MCC/main panel, including breakers, feeders, disconnects, and lock-out/tag-out (LOTO) implementation.

e) Assess existing duct mounted sensors, dampers, actuators and related devices associated ERU.

Identify which are to be removed, abandoned retained, or replaced and implement approved removals and replacements under the contract allowance.

f) Perform testing, adjusting and balancing (TAB) of the new split system and associated ductwork to verify that airflow, external static pressure, and unit operation meet the design criteria established by the Mechanical Engineer and document results in TAB report.

g) Full integration of all new HVAC equipment, controllers, sensors, etc., into the building Metasys building automation system, including configuration of the system network engine, graphics updates, point discovery, and database export as required by Government.

9.3 Roles and Responsibilities

a) General Contractor

1) Provide overall project management, coordination, schedule control and site safety.

2) Coordinate mechanical, electrical, and control, sheet metal trades and Johnson Controls for integration with BLM operations.

b) HVAC Subcontractor and Mechanical Engineer

1) The HVAC subcontractor shall retain a qualified licensed professional Mechanical Engineer.

2) The Mechanical Engineer shall be responsible for:

i) Basis of design for the new split-system, including capacity, airflow, static pressure and ventilation compliance, duct/pressure assumptions.

ii) Design intent for duct modifications, device strategy and control sequences.

iii) Review and where required, stamping of mechanical design drawings and calculations.

iv) HVAC load calculations to support sizing decision.

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c) Sheet Metal Subcontractor (or Sheet metal Work under HVAC Subcontractor)

1) Removal and capping/patching of existing WRU related duct connections and openings.

2) Sheet metal work shall include fabrication, modification, installation and repair of all ductwork required to connect the new indoor unit to the existing duct system, including transitions, offsets and branches.

3) Installation, adjustment and sealing of duct mounted dampers, access doors and related sheet metal accessories.

4) Installation and sealing of duct and wall penetrations associated with refrigerant line sets and related piping where sheet metal sleeves or plates are used.

d) Electrical Subcontractor

Provide all electrical demolition and new work associated with removal of the ERU and installation of the new split-system, including feeders, breakers, disconnects, grounding, bonding, labeling, and coordination with the building motor control center (MCC)/main panel in accordance with the National

Electric Code (NEC).

9.4 Mechanical Engineer and Drawings

The HVAC subcontractor under the Mechanical Engineer, shall prepare drawings that clearly show:

a) Removal limits for the existing ERU and associated ductwork, piping, and devices.

b) New or modified ductwork connecting the new indoor unit to the existing duct system,…