DRAFT SOW - Annex and White Swan WA.docx

SECTION C

DESCRIPTION/SPECIFICATIONS/WORK STATEMENT

1. OVERVIEW

A. SITE LOCATIONS

Yakama Service Unit – Annex building 401 Buster Rd, Toppenish WA White Swan Dental Clinic – 62 Birdsong Lane, White Swan WA

A sitemap is included as Attachment A.

B. PROBLEM STATEMENTS

The Yakama Service Unit, White Swan Dental, and Annex building's North and South parking lots must be replaced, and stripping and ADA markings must be added.

C. OBJECTIVE

This project will make necessary changes to the parking lots of the Annex (South and North) building and White Swan dental clinic, including replacing the lot, applying a top coat to help extend the useful life of the asphalt, and adding ADA markings.

D. WORK SUMMARY

1. Mill the existing parking lot surface.

1. Prepare soil, install, grade, and compact base material

1. Provide soil and base testing

1. Pour asphalt and compact

1. Apply a seal coat to the parking regions

1. Strip with high visibility, traffic grade acrylic or latex paint. Add ABA-compliant markings

1. Provide submittal documenting the final inspection report, including before and after photographs as well as a site survey including measurements and conditions

1. Dispose of all refuse and debris at a legally established landfill.

1. Follow accepted standards for safe practice.

1. Perform inspections and tests to ensure quality and safety standards

1. Apply asphalt overlay to the parking lot

1. Plan for traffic control

II. TECHNICAL REQUIREMENTS

A. CODES, REFERENCES, AND STANDARDS

Work under this contract shall comply with the codes, references, and standards listed below. The current versions of all codes and standards shall be used.

Include applicable building standards or codes related to the work being performed.

1. ABA standards for accessible design

2. Annex/White Swan building codes

3. ASTM D3320 standard specification for Emulsified Asphalt

4. OSHA/ TOSHA

5. Washington State Department of Transportation “Standard Specifications for Road, Bridge, and Municipal Construction” Designation M 41-10, 2024 (WSDOT)

6. National Fire Protection Association (NFPA)

B. SUBMITTALS

The Contractor shall provide submittals on the items listed below. COR approval is required before proceeding with the portion of work the submittal applies to. Submittals shall be reviewed and approved within five (5) working days of receipt.

1. Pre-Construction

a. Project Schedule/placement plan

b. Safety and Accident Prevention Plan/ Hazardous Waste Management and Disposal

c. Shop drawings and specifications

d. Test soil and provide testing report

e. Traffic control plan and Contractor quality control plan

2. Materials

a. Asphalt emulsion-based seal coat

b. Documents on the type of Thermoplastic markings

c. Documents for Type of asphalt and data (mix design)

3. Test data

a. Soil compaction results

b. Base material testing

c. Gradation results

d. Asphalt testing

4. Post Construction

a. Operation & Maintenance Information

b. Completion report

c. Red-lined drawings

C. MATERIAL SPECIFICATIONS

1. Seal coat

a. Commercial grade asphalt emulsion-based seal coat

b. ASTM D3320 Standard specification for emulsified asphalt

2. Stripping paint

a. High visibility traffic grade acrylic or latex paint

0. Waterborne acrylic alkyd traffic marking paint in colors indicated

b. Paint to match existing layout, including handicapped

3. ADA Marking

a. Thermoplastic markings for ADA symbols and signs

b. ADA standards for accessible design, dimensions and color contrast

4. Subgrade

a. 40-60% coarse aggregate (i.e. crushed stone)

b. 30-50% fine aggregate (i.e. sand)

c. 4-10% mineral filler (i.e. limestone dust)

d. Meet Washington State Department of Transportation “Standard Specifications for Road, Bridge, and Municipal Construction” Designation M 41-10, 2024 Chapter 9-03.8(2), 2-06.3

5. Finishing material

a. Curing compound: Liquid membrane-forming curing compound, complying with ASTM C309

6. Hot-Mix Asphalt

a. Comply with the Washington State Department of Transportation “Standard Specifications for Road, Bridge, and Municipal Construction 2024” Designation M 41-10, Chapter 5-04, Commercial Evaluation

b. Maximum aggregate size: ½-inch

c. Performance Graded Asphalt Binder 76-28

d. Anti-stripping additive required

B. QUALITY ASSURANCE

1. All work must be performed by a valid general contractor’s license in the state of Washington

2. OSHA construction safety certification for the site supervisor

3. Offer a 1year warranty period for the construction

4. The contractor must hold all relevant state and local licenses for performing asphalt maintenance and striping work, e.g., the National Pavement Contractors Association (NPCA) and the National Asphalt Pavement Association (NAPA).

5. All work must comply with federal, state, and local regulations, including but not limited to the codes, standards, and references listed in section II. A.

6. Asphalt cement certification

C. WORK EXECUTION REQUIREMENTS

The Contractor shall perform all work in such a manner as to meet all accepted standards for safe practices during operations and to maintain safe conditions of the premises at all times, including safely stored equipment, machines, and materials. This includes compliance with Tribal and Federal laws and OSHA and/or TOSHA at all times to protect all persons, including the Contractor’s employees and Owner, against injury or damage to property

Parking lot

· - Conduct a site survey and measure the parking lot.

· - Remove any obstacles or debris from the parking lot. The contractor must also remove all debris resulting from the site cleaning.

· - Dispose of all materials in accordance with the Washington State Department of Transportation “Standard Specifications for Road, Bridge, and Municipal Construction” section 2-03.3(7)C or local regulation of Toppenish WA.

· - Use a milling machine to remove the existing asphalt and dig down to the recommended depth per WSDOT.

· The material should be excavated to a depth of no greater than 2 ft (0.61m) or to accommodate the new structure. Soil testing will meet the testing requirements as recommended by the WSDOT, 2024 Chapter 9-03.8(2).

· Grading is performed to ensure proper drainage and prevent water accumulation. The subgrade is compacted to a depth of 6 inches and achieves 95% of the maximum density in accordance with WSDOT 2024 Chapter 2-03.3(14) D.

· Install or repair drainage systems considering surface drainage, gutter flow, inlet capacity, and locations per WSDOT.

· Apply a tack coat to promote adhesion between layers, using cationic emulsified asphalt CSS-1, CSS-1h, or Performed Graded (PG) asphalt.

· Install the base material to the required contours and elevations to ensure a hard, uniform, and well-compacted surface. The base should consist of at least one layer placed directly on the prepared subgrade, spread, and compacted to a uniform thickness and density.

· Water the material if needed to achieve the optimum moisture content and maximum density.

· Pour asphalt. The asphalt layer should be per the WSDOT Section 5-04 and spread and compacted to the pavement thickness, smoothness, and slope for proper drainage.

· Rolling and compaction should start as soon as the asphalt can be compacted without displacement and continue until it is thoroughly compacted and all roller marks have disappeared.

· Contractor will furnish all necessary equipment, supervision, labor, materials, tools, traffic control, and incidentals for the job.

Strip Painting/ABA marking The parking lot and curbs shall be painted according to the manufacturer’s recommendations. The Contractor shall verify measurements and evaluate actual site conditions. Parking stalls shall be painted white. All paint shall have a minimum film thickness of 15 mils, and lines shall be 4 inches wide. The international symbol of accessibility shall comply with the ABA Standards for Accessible Design. The pavement markings shall include delineating parking stalls, crosswalks, access routes, no parking zones, and handicapped parking designations. Paint shall be applied in dry weather and only when the pavement and atmospheric temperatures are above 45°F and are anticipated to remain above 45°F for eight hours after completion. Application will not be permitted when precipitation is anticipated or when temperature and humidity conditions are such that the paint cannot dry thoroughly. The paint will be applied with mechanical equipment to produce uniform, straight edges.

Testing

Before testing, the aggregates and samples of each aggregate source must be taken, representative samples and random samples as recommended by WBDG (Inspector’s Manual for Hot-Mixed Asphalt and Portland Cement Concrete Pavement Construction) chapter 3-2.2. Ensure that the samples do not cool down before compaction of the mix is conducted. Do not reheat the samples if this happens.

· Asphalt content to determine the amount of asphalt; ASTM D6307 tested by ignition or ASTM D2172 tested by solvent extraction. WBDG (Inspector’s Manual for Hot-Mixed Asphalt and Portland Cement Concrete Pavement Construction) Chapter 3-8.5

· Air voids to ensure good mixture performance; ASTM D3203. WBDG (Inspector’s Manual for Hot-Mixed Asphalt and Portland Cement Concrete Pavement Construction) Chapter 3-8.6

· Stability and flow on the compacted asphalt mixtures; ASTM D6927. WBDG (Inspector’s Manual for Hot-Mixed Asphalt and Portland Cement Concrete Pavement Construction) Chapter 3-8.8

1. Kickoff Meeting:

a. An onsite kickoff meeting or virtual meeting with the COR is required to evaluate and understand the building layout and project needs.

2. Closeout Procedures:

a. Provide Operation and Maintenance (O&M) Manual

b. Submit copies of Operation and Maintenance Manuals three days before applicable demonstrations and training.

c. Provide warranty information for all equipment and materials within the O&M documentation. If the manufacturer requires registration for warranty tracking or offers upgrades due to registration, provide all registration information and instructions on submitting.

d. Submit the complete project package.

3. Closeout Meeting

a. The Contractor shall coordinate a closeout meeting with the COR and Facility Manager.

b. Contractor shall record and provide meeting minutes

I. ATTACHMENTS

A. Site Map

Attachment A – Yakama Service Unit White Swan Dental Clinic

Annex Building image1.png image2.png