A_04_Final_SOW.pdf

STATEMENT OF WORK

Red Rock Canyon NCA Parking Lot Restrooms

Potable Water Pipeline Repair Project

Southern Nevada District, Las Vegas, Nevada

August 2025

Bureau of Land Management

Nevada

TABLE OF CONTENTS

1.0 INTRODUCTION

2.0 SCOPE OF WORK

3.0 PROJECT DETAILS

4.0 SPECIFICATIONS

5.0 SITE MANAGEMENT, MATERIAL DISPOSAL, AND CLEANUP

6.0 PROJECT ADMINISTRATION

7.0 BUREAU OF LAND MANAGEMENT POINTS OF CONTACT

Appendix A:

Exhibit 1 .......... Site Vicinity

Exhibit 2 .......... Lower Restroom Facility Location

Exhibit 3 .......... Water Line Layout

Exhibit 4 .......... Isolated Leak Location

Exhibit 5 ............ Allowable Work Area

Exhibit 6A ......... Pipe Zone Backfill

Exhibit 6B ......... Type II Backfill Specification

Exhibit 7 ............ Final Backfill Specification

Exhibit 8 ............ Concrete Construction Detail

Exhibit 9 ............ Walkway Seeded Exposed Aggregate

Appendix B:

Photograph 1.... Year 2024 Parking Lot Closure

Photograph 2.... Year 2024 Work Area

Photograph 3.... Year 2024 Work Area

Photograph 4.... Year 2024 – 2-inch Diameter Potable Water Pipeline Depth

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1.0 INTRODUCTION

1.1 Project Summary

Locate and repair a leaking 2-inch diameter potable water pipeline that serves a restroom facility at the

Red Rock Canyon National Conservation Area (RRC) Visitor Center Complex.

The water is currently shut off to this section by means of a valve.

1.2 Project Location

The RRC Visitor Center Complex is located at 1000 Scenic Loop Dr, Las Vegas, Nevada 89161

(Exhibit 1).

The lower restroom facility is located at lat: 36.13502° / long: -115.42693° (Exhibit 2) at an approximate altitude of 3,768 feet above sea level.

1.3 Background

The restroom facility at the RRC Visitor Center Complex contains approximately 41 percent of the total public fixture units available on-site. This facility is supplied by a 2-inch diameter Sch 40 PVC potable water pipeline. Water is delivered to the facility by way of a nearby 15,000-gallon storage tank and pumping system (Exhibit 3).

The restroom facility is primarily used by visitors utilizing adjacent parking areas. Pedestrian access between the restroom and the Red Rock Visitor Center building is provided by a raised crosswalk and stairway system.

In July, 2025, minor surface water accumulations were observed on the raised crosswalk. The source is likely a leak in the underlying 2-inch diameter pvc pipeline. Notably, this same pipeline was previously repaired in April 2024 at a 90-degree bend where the pipe departs its east-west alignment and turns south before entering the restroom building. Exhibit 4 shows the location of the waterline and evidence of new leak.

2.0 SCOPE OF WORK

Project scope of work activities include the following:

1) Install traffic control devices in accordance with approved traffic control plan.

2) Locate and mark pipeline alignment.

3) Remove concrete as needed.

4) Excavate to expose damaged pipe section.

5) Repair damaged pipe section.

6) Test pipe repair.

7) Backfill excavation.

8) Repair concrete walkway.

9) Remove all excess material including backfill, concrete, pavement, and equipment.

10) Clean work area by removing all trash and sweeping area.

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3.0 PROJECT DETAILS

Red Rock Canyon NCA (RRC) is among the most visited BLM sites in the United States. Last year, approximately 1.0 million visitors entered the through its fee station.

The raised crosswalk that connects the parking lot and restroom facility to the rest of the Visitor

Center complex experiences high volumes of both vehicular and pedestrian traffic.

Although the restroom facility has been closed since the pipeline leak was discovered, the raised crosswalk area still experiences high vehicular and pedestrian traffic because of the site’s overall layout.

At the end of each workday, Contractor shall make the work area safe and cover any open excavations with traffic trench plates.

3.1 Traffic Management Plan

In cooperation with Government, the Contractor shall develop a traffic management plan that shall be approved by the Contracting Officer prior to starting work. Contractor shall install traffic management cones and signs in accordance with the approved plan prior to starting work.

3.2 Visitor Safety

Visitor safety is a top Government priority. During repairs, the contractor should anticipate that visitors may unintentionally attempt to access the active work area. The Contractor with as needed assistance from Government staff shall be expected to politely direct visitors around the work area.

Exhibit 5 shows the area that the Government will cordon off to prevent vehicle intrusion into the construction site. During the repair work the Contractor should expect that visitors will inadvertently try to enter the work area. Photographs 1 through 3 show how the parking lot and pipeline work area were cordoned off during the 2024 repair work.

3.3 Raised Concrete Walkway Removal and Replacement

As there is uncertainty as to the exact location of the leak and the extent of pipeline damage, for bidding purposes assume (2) concrete panels to be removed - (1) 10 ft. by 10 ft and (1) 6

ft. by 10 ft. Each concrete panel is 5-inches thick with #4 steel reinforced bar.

Each section that is removed is to be replaced to match existing conditions.

Note that the walkway is a colored, exposed aggregate surface while the ramp is a smooth finish and has no pigmentation.

3.4 Trenching Length

The pipeline is approximately 5-feet deep. Refer to Photograph 4 for reference.

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For bidding purposes, assume a 20-foot-long trench, 3-feet wide and 5-feet deep will be excavated, and 20 ft. of piping and fittings will be removed and replaced.

3.5 Interpretation of Quantities in Solicitation

The quantities given in the Solicitation and contract forms are approximate only, being given as a basis for the comparison of bids, the Government does not expressly or by implication, agree that the actual amount of work will correspond therewith, but reserves the right to make such alterations, deviations, additions to or omissions from this

Statement of Work including the right to increase or decrease the quantity of any portion of the work or to omit any item or portion of the work as may be determined by the

Government to be required for the proper completion or construction of the whole contemplated.

4.0 SPECIFICATIONS

The following specifications will be used for this project:

a) Uniform Standard Specifications for Public Works Construction Off-Site

Improvements, Clark County Area, Nevada (USSPWC);

b) Uniform Design and Construction Standards for Potable Water Systems, 3rd Edition, Las Vegas Valley Water District (UDACS); and

4.1 Utility Clearance

A. Contractor shall be responsible for all utility clearances within the work area prior to beginning any excavation work.

4.2 Traffic Management

A. Contractor to install all traffic control cones, signs, and warning tape prior to initiating concrete removal work. Traffic control cones, signs, and warning tape to remain in place for duration of work. Throughout the project duration, the Contractor shall routinely inspect and make as needed adjustments to cones, signs, and warning tape to exclude public vehicles and pedestrians from work area.

4.3 Concrete Removal, Excavation to Locate Pipe, Pipe Repair and Trench Backfill

A. Prior to beginning work, Contractor will coordinate with Government where to begin pipeline excavation.

B. Contractor shall neatly saw cut and remove concrete where indicated. Removed concrete shall be placed in a location designated by Government.

C. Contractor to excavate and expose leaking pipeline section. Once the pipeline has been exposed and made accessible and prior to its repair, Government shall make observations, August 2025 Red Rock Canyon NCA – Potable Waterline Repair 4 of 8 take pictures and measurements of damaged pipe section.

4.4

D. The replacement pipe segment shall be made of the same material (Sch 40 PVC) and be the same diameter as the damaged pipe segment and shall be installed in accordance with the Uniform Plumbing Code (UPC) as adopted by Clark County, Nevada. Any pipe couplers used as part of the pipe repair shall be appropriate for the existing pipe material and conform to the UPC as adopted by Clark County, Nevada.

E. Joints shall be properly bonded per manufacturer requirements.

F. Pipeline repair shall be completed at one time.

G. Pipe zone backfill shall be in accordance with Exhibit 6A. Type II backfill shall be as specified in USSPWC Section 704.03.04 (Exhibit 6B).

H. Final backfill shall be placed between the top of the pipe zone and top of subgrade and be compacted in loose lifts not to exceed 8-inches to 90 percent of maximum density. Final backfill shall be as specified in USSPWC Section 207.02.02 (Exhibit 7). Trench fill excavated as part of exposing the damaged pipe section can be reused as final backfill with prior Government inspection and approval.

I. Contractor shall install 4-inches of Type II aggregate base on top of subgrade and compact to 95-percent maximum density. Type II aggregate base shall be as specified in USSPWC section 704.03.04. Provide Government with material certificate that confirms aggregate meets specification.

J. Contractor to employ third party company to perform compaction on each compacted backfill lift.

Repaired Pipe – Inspection and Testing

A. Prior to installing pipe zone backfill the Contractor government shall inspect the pipe repair.

B. Prior to installing pipe zone backfill, Contractor shall test repaired pipe section.

C. All new pipe and fittings shall be visually inspected to ensure compliance with material and installation specifications.

D. One hour or more after completion of pipe segment replacement(s), the service line shall be gradually repressurized using normal operating supply.

E. Prior to backfilling excavation, Contractor to test pipeline repair. Contractor shall return the line to service and flush the line for one-hour by opening both janitor room sink faucet.

After one hour, close the janitor sink faucet and close the valve adjacent to exterior building wall. The Government shall accept the pipeline repair if observations of the pipeline test show no leaks after a 1-hour.

F. The repaired sections shall be left exposed and observed under normal system pressure for a

24-hour period.

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G. During the test period all joints, fittings, and pipe walls shall be inspected for visible signs of leakage, weeping or deformation.

H. During the test period, downstream plumbing shall remain closed.

I. Contractor to coordinate with Government on method to disinfect water line prior to commencing such operation.

i. Water line to be disinfected using NSF 60 compliant chlorine.

ii. Government to measure line chlorine residual during disinfection

iii. Contractor to collect one water sample from janitors closet sink faucet and have sample analyzed for the presence of total coliforms. Analysis to be performed by a State of Nevada certified analytical laboratory approved to perform total coliform analysis.

iv. SGS/Silver State Laboratories in Las Vegas, Nevada perform coliform analyses twice per month on the Red Rock potable water system.

J. Backfill Authorization – If no leaks are observed during the test prior the repair shall be considered acceptable.

i. Notify Government in writing of water tightness test results.

ii. No pipe backfilling is allowed until Government reviews and approves analytical test results and chlorine residual is between 0.5 and 1.0 ppm.

iii. Proceed with backfilling only after receiving Government approval.

4.5 Concrete Installation

A. To the extent possible replace the raised concrete walkway with new colored concrete to match color of existing panels. Government in coordination with Contractor shall approve pigment color prior to pigment purchase. Selected pigment to be mixed according to manufacturer's written instructions and result in a hardened concrete color consistent with existing colored concrete panels.

B. Approach ramp concrete shall not receive pigment.

C. Concrete to be 5-inches thick (Exhibit 8). Concrete strength to be 4,000 psi at 28 days.

D. The existing raised walkway surface finish is seeded exposed aggregate (Exhibit 9).

Contractor to match existing surface type, texture and color. Contractor to coordinate finish with Government prior to pouring concrete.

E. Specific information of existing concrete thickness is not available, therefore Contractor and Government to field verify concrete thickness and reinforcement when concrete panels are removed. For bidding purposes, assume replacement concrete to be 7-inches thick

August 2025 Red Rock Canyon NCA – Potable Waterline Repair 6 of 8 containing #4 steel reinforcement bar 18-inches on center in both directions. Replacement concrete thickness and reinforcement shall match existing.

F. Incidental damage to curbs and pavement outside of the raised walkway shall be repaired at the Contractors expense.

G. Match existing joint system in type, depth, and orientation.

H. Contractor to provide material certificates for the following:

1. Cementitious materials.

2. Admixtures.

3. Steel reinforcement and accessories.

4. Curing compounds.

5. Joint filler strips.

I. Contractor to utilize a qualified concrete installer, preferably ACI Certified Flatwork

Technician, Finisher, and supervisor who is an ACI certified Concrete Flatwork Technician

J. Prior to concrete purchase, contractor shall notify Government of the ready-mix manufacturer and mix that will be used.

K. Steel reinforcement shall be ASTM A615, grade 60, deformed unless it is determined by existing conditions that another type of reinforcement should be used. Steel reinforcement shall have a minimum of 2-inches of concrete cover.

L. Cementitious material shall be Portland Cement ASTM C 150, type I/II. Fly ash shall meet

ASTM C618, Class F. Normal weight aggregates meeting ASTM C33. Maximum coarse aggregate size shall be 1 ½-inch. Fine aggregate shall be free of deleterious reactivity to alkali in cement. Water shall be potable and meet ASTM C94/C94M.

M. Contractor shall utilize third party testing company to test concrete cylinder for 28-day concrete strength. Contractor to provide test results to Government prior to final payment.

5.0 SITE MANAGEMENT, MATERIAL DISPOSAL, AND CLEANUP

This section establishes requirements for the Contractor’s conduct and responsibilities related to managing the project site, disposing of materials, and maintaining cleanliness throughout the duration of work. These provisions are intended to protect the surrounding environment, preserve visitor access and safety, and ensure that the project area is returned to a clean and orderly condition upon completion of all work

5.1 Site Management

A. Conduct operations to ensure minimum interference with roads, streets, walks, walkways, and other adjacent occupied and used facilities.

B. Do not close or obstruct streets, walks, walkways, or other adjacent occupied or used facilities without permission from Government.

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C. Provide alternate routes around closed or obstructed trafficways as directed by Government.

D. Use water mist and other suitable methods to limit spread of dust and dirt. Comply with governing environmental-protection regulations. Do not use water when it may damage adjacent construction or create hazardous or objectionable conditions, such as ice, flooding, and pollution.

5.2 Material Disposal

A. Do not allow demolished materials to accumulate on-site. Excavated material not reused shall be disposed in accordance with applicable local, State, and Federal regulations. No material disposal shall occur within the Red Rock Canyon National Conservation Area.

B. Remove and transport debris in a manner that will prevent spillage on adjacent surfaces and areas.

5.3 Cleaning

A. Clean adjacent areas of dust, dirt, and debris caused by operations. Return adjacent areas to condition existing before project operations began.

B. Clean adjacent roadways and walkways of debris caused by project activities.

C. Water will not be furnished by the Government. The contractor must haul all water to the site.

6.0 PROJECT ADMINISTRATION

This section outlines the administrative procedure, coordination responsibilities, and performance expectations associated with the execution of work under this contract. The provisions in this section are intended to ensure that wok proceeds in a safe, organized, and timely manner, while minimizing disruptions to visitor access and site operations.

6.1 Project Coordination

A. Contractor shall notify Government a minimum of 5 working days before initiating on-site work effort.

B. The Contractor shall coordinate and meet with Red Rock Visitor Center staff and designated

Government representative to develop a traffic control plan. Contractor shall explicitly state in writing the work area space required to be protected from traffic and the duration of that protection.

C. Excluding traffic control signs, cones, tape, etc., Government shall provide staff necessary to keep the work area free of Red Rock Canyon NCA visitors.

D. Government personal shall be available by phone or email and will be on-site as needed to respond to Contractor questions. Contact information will be provided when Notice To

Proceed is issued.

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E. Government shall be available for on-site pre-solicitation and pre-construction meetings when requested.

F. Period of Performance

1. Work shall commence no later than 10 business days from the issuance of Award.

2. Period of performance is to be completed by 10/31/2025.

3. The Contractor shall notify Government five working days in advance of initiating work at the site and obtain Government approval for that date.

G. Warranty

Contractor shall warranty work for 1-year following pipe repair acceptance by Government.

H. Site Access

The Contractor shall have full use of specified areas needed to perform the work.

Contractor’s use of premises is limited only by Governments right to perform work.

Schedule and sequence operations necessary to complete the work.

6.2 Work Hours

Work shall be performed Monday through Friday, 7:30 a.m. to 4:30 p.m. except on weekends and legal holidays. Any work performed outside of designated hours must receive prior approval from the Government.

mbernard Cross-Out

APPENDIX A

EXHIBITS

APPENDIX B

2024 PIPELNE WORK AREA

Photograph 1 – Year 2024 Parking Lot Closure.

Note immediate work area barricades in distance.

Photograph 2 – Year 2024 Work Area

Note that access is provided between the restroom facility breezeway and stairs.

Photograph 3 – Year 2024 Work Area

Note the presence of visitors walking past the work area.

Photograph 4 - Year 2024 - Pipe Depth