US Department of Agriculture (USDA)

Statement of Work

Riverside Day Use Area Rehabilitation - 2.0

Contents Project General Information

1.0 Scope of Work

2.0 Background

3.0 Project Location

4.0 Description of Work

4.1 Mobilization:

4.2 Wooden Trail Bridge Superstructure:

4.3 Trail Bridge Substructure/Retaining Wall:

4.4 Asphalt Repair:

4.5 Hand Pump Repair:

5.0 Schedule

6.0 Contractor’s License

7.0 Contractor’s Key Personnel

8.0 Required Submittals

Specifications

Project Riverside Day Use Area Rehabilitation

General Information

1.0 Scope of Work

This project involves the repair of several components at Riverside Day Use Area.

Mandatory work items include replacement of a wooden trail bridge, construction of a reinforced concrete abutments, and asphalt concrete repair.

Optional work items include a stone veneer facing on the abutments and repair to the hand pump well.

2.0 Background

The Riverside Day Use Area sustained significant damage during flood events in 2023 and previously in 2017.

These storms generated high flows that destroyed the trail bridge and impacted surrounding site infrastructure.

This project will address the flood-related damage as well as several deferred maintenance items throughout the site.

3.0 Project Location

This project is located on the Stanislaus National Forest at Riverside Day Use Area, which is in Tuolumne, California. From Tuolumne, CA take Tuolumne Road to Carter Street. Turn Left on Carter Road, and then Right on Buchanan Road. Continue on Buchanan Road for 1.4 miles. Turn Right to stay on Buchanan Road and cross the North Fork Tuolumne River, then take the first left into the Riverside Day Use Area. The GPS Coordinates are 37.981734602634056, -120.20569045433999.

4.0 Description of Work

The EOQ below shows all work items that shall be performed as mandatory work items under this contract, as well as optional work items.

ESTIMATE OF QUANTITIES

MANDATORY WORK ITEMS

PAY ITEM ITEM DESCRIPTION ESTIMATED QUANTITY PAY UNIT

15101 Mobilization 1 Lump Sum

41801 Asphalt Concrete, Pothole Patching & Bridge Approaches 14 Ton

55700 Timber Trail Bridge, Fabricate & Install All Lump Sum

25901 Reinforced Concrete Retaining Wall (Estimated 15 LF) All Lump Sum

OPTIONAL WORK ITEMS

PAY ITEM ITEM DESCRIPTION ESTIMATED QUANTITY PAY UNIT

61101 Water System, Repair Hand Pump System All Lump Sum 62001 Stone Veneer Facing at Retaining Wall All Lump Sum

All work shall be completed in accordance with attached project specifications, drawings, and best management practices. The work includes all labor, material, and equipment necessary to perform all the operations required to complete the work specified. No work on, in, or adjacent to the channel is permitted when there is water in the overflow channel. No vehicles or equipment may be driven off existing roads and trails.

The day use area will be closed during construction. The contractor shall be responsible for taking necessary precautions to protect public and private property during construction. The contractor is responsible for safeguarding employees, public, existing facilities, and forest resources from project operations. Signs and barricades as necessary shall be erected to make unguarded operations safe.

4.1 Mobilization:

Mobilization as necessary shall include preparatory work and operations necessary for the movement of personnel, equipment, supplies, and incidentals to the project site. The site has two parking areas, and either may be used as a potential staging area. All staging and storage areas will be completely removed, and the areas restored to pre-construction conditions upon completion of use. Disposal of waste materials will be off National Forest land and in compliance with local, state, and federal laws regarding disposal of construction waste. No water is available at the project site.

Figure 1 Trail bridge site

4.2 Wooden Trail Bridge Superstructure:

The wooden trail bridge is to be constructed on site. The bridge shall meet the requirements of the specifications incorporated by reference and supplied as well as the specifications established in the drawings. Contractor is responsible for maintaining a clean working environment and collecting any sawdust or other debris and disposing of the site in accordance with local regulations. No wood is to be cut in the overflow channel, ensure that sawdust does not enter the waterway. While the majority of debris from the previous bridge is gone, work includes the removal of any remaining debris, such as lumber, hardware, and surfacing materials from the previous trail bridge. See Figure 1 above, a photo of the trail bridge site in its current condition.

4.3 Trail Bridge Substructure/Retaining Wall:

A gabion retaining wall forms the abutments on either side of the trail bridge. This structure is in disrepair, and reinforced concrete retaining walls are to be built at the abutments where the gabion cells have eroded. As an optional item, this wall will have a stone veneer facing. This structure will serve as the abutments of the trail bridge, and no other areas of the gabion structure will be repaired. Approximate locations and quantities are shown in the drawings. The retaining wall shall meet the requirements of the specifications incorporated by reference and supplied as well as the specifications established in the drawings. Work includes the removal of any remaining debris from the damaged gabion cells or previous abutments, including, but not limited to, concrete debris, metal hex netting, and hardware. See Figure 1 above, a photo of the trail bridge site in its current condition.

Figure 2 Example of damage on the asphalt trail, to be repaired

4.4 Asphalt Repair:

This item includes necessary repairs to the existing asphalt surfaces as outlined in the project specifications and drawings. This includes replacement of asphalt that will need to be removed to access abutments and retaining walls, as well as other defects and potholes in the asphalt trail. The limits of the pavement patching will be marked by the COR during construction within 7 days after a request is received by the COR. Patching will be done in accordance with the project plans and specifications.

4.5 Hand Pump Repair:

This work is included as an optional item. A well with hand pump is located at this site. Work will include all necessary materials and labor to return the hand pump to operation. Once hand pump is operational, contractor will complete the flushing, disinfection, and testing procedure as outlined in the specifications. All materials and procedures are to comply with federal, state, and local requirements for drinking water. All materials that come into contact with drinking water must have NSF/ANSI Standard 61 certification. A well repair permit is required to perform this scope of work. The contractor is responsible for obtaining the permit from Tuolumne County.

5.0 Schedule

Riverside Day Use Area is open 365 days a year and has high visitor use. It is imperative that the project schedule provide maximum conflict reduction between project activities and use by the public. A closure order may be put in place for the duration of the project, the contractor can request this provided they give 60 days advanced notice. Specific work restrictions exist for work in the overflow channel area, including a two day limited operation period for any precipitation event greater than 0.1 inch after September 15th. Additionally, no work may be performed in the overflow channel while water is present. Work hours shall be between 8AM and 5PM weekdays (non-holiday). No work shall occur at the project site on weekends or holidays without prior written approval from the Contracting Officer.

The period of performance is to be 45 days.

At the pre-work meeting, the contractor shall submit a proposed work schedule for the project to the Contracting Officer. The Contracting Officer shall be notified in writing at least 48 hours in advance of any activity which requires inspection, acceptance, or approval. The contract shall update approved schedule as necessary when significant changes occur during the progress of work, or when requested by the Contracting Officer.

6.0 Contractor’s License

The contractor shall hold a valid California contractor’s license. If an offeror intends to subcontract any portion of the work, all proposed subcontractors must be identified in the bid submission and must also hold a valid California contractor’s license. Additionally, any work performed on the hand-pump well requires a subcontractor or contractor licensed as a C-57 Well Drilling Contractor.

7.0 Contractor’s Key Personnel

The Contractor shall establish the following key personnel:

Field Superintendent Safety Manager Quality Control Manager

All personnel identified above shall have substantial experience in these roles comparable to that identified in the Response to Evaluation Factors for the overall Contractor.

The Contractor shall make no substitutions of key personnel unless the substitution is necessitated by illness, death, or termination of employment. The Contractor shall notify the Contracting Officer within 15 calendar days after the occurrence of any of these events. After the initial 90-day period, the Contractor shall submit changes in personnel to the Contracting Officer at least 15 days prior to making any permanent substitutions.

8.0 Required Submittals

In addition to the project schedule, the contractor shall submit a submittal register at the pre-work meeting.

Submittals are required for all material to be delivered to the site, including rock, asphalt, concrete, timber, hardware, etc. In addition, material testing shall be completed, and data shall be submitted to demonstrate compliance with concrete design standards. Following material approval and delivery, in the case of rock, asphalt, and concrete, the contractor shall submit weigh tickets/batch tickets for each load within 24 hours of its arrival to the job site. For work associated with the repair of the hand pump well, submittals are required for parts, chemicals, procedures, and testing as specified in the plans and specifications, to ensure compliance with State and Local laws. Additional submittals are required as identified in the project plans and specifications.

Include all anticipated submittals within the submittal register, as well as a proposed submission timeline which corresponds to the work schedule. Submittal submissions shall include the project plan or specification reference, material or manufacturer’s data sheets, and demonstrate compliance with contract requirements.

Submittals are to be submitted to the Contracting Officer and COR via email, and a response will be provided within 10 business days.

Specifications Specifications: Standard Specifications for Construction of Roads and Bridges on Federal Highway Projects (FP-14), United States Department of Transportation, Federal Highway Administration Specifications: Forest Service Supplemental Specifications (FSSS), USDA Forest Service Specifications: Forest Service Supplemental Specifications (FSSS) 557 – Timber Structures, USDA Forest Service Reference: USFS Operation and Maintenance Manual for Hand Pumps, 2nd Edition, USDA Forest Service Fire Plan