Attachment A -HickoryCr11_Repari-SOW.pdf

STATEMENT OF WORK

FOR

HICKORY CREEK WATERSHED

SITE 11 REPAIRS

Revision 0

06/25/2025

Table of Contents

1 INTRODUCTION

1.1 Mission

1.2 Background

1.3 Scope

2 GENERAL REQUIREMENTS

2.1 Non-Personal Services

2.2 Contractor Personnel Qualifications

2.3 Key Personnel

2.4 Location and Hours of Work

2.6 Invoicing

2.7 Identification of Contractor Personnel

3 REQUIREMENTS/TASKS

3.1 Pre-Construction Meeting

3.2 Mobilization, Fence Removal and Removal of Water

3.3 Excavation, Common

3.4 Earthfill, Rock Riprap

3.5 Topsoiling, Vegetation

3.6 Fence

4 DELIVERABLES/SCHEDULE

5.5 Organizational Conflicts of Interest

1 INTRODUCTION

The United States Department of Agriculture Natural Resources Conservation Service (USDA-NRCS) Texas State Office requires construction services for the repairs of Hickory Creek Dam Site 14 located in Denton County, Texas

1.1 Mission

The Natural Resources Conservation Service mission is to deliver conservation solutions so agricultural producers can protect natural resources and feed a growing world. The Watershed Protection and Flood Prevention Operations (WFPO) Program helps units of federal, state, local and federally recognized tribal governments (project sponsors) protect and restore watersheds.

1.2 Background

Hickory Creek Site No. 11, National Inventory of Dams (NID) No. TX00609, is a single-purpose earthen, flood prevention dam designed in 1969 and constructed in 1971. The structure is an integral part of the Hickory Creek Watershed Work Plan approved in October 1966 and supplemented in June 1968. Site No.

11 is located approximately 6 miles west of Denton and 3 miles northeast of Ponder, Denton County, Texas. The site is situated within the Grand Prairie land resource area of Texas.

A deficiency report and corresponding abstract (Appendix B) was prepared in July 2019 to investigate erosion along the upstream wave berm.

1.3 Scope

The upstream wave berm repair of Site 11 will consist of stripping and stockpiling the topsoil from the embankment eroded area; performing excavation and earthfill activities to achieve the specified rock riprap subgrade; placing and anchoring geotextile fabric on the approved subgrade; placing rock riprap to the required thickness and limits as shown in the construction drawings; backfilling the toe of the rock riprap with earthen materials; blending the earthwork above the rock riprap into the existing embankment;

establishing vegetation; and reconstructing the fence above the rock riprap..

2 GENERAL REQUIREMENTS

The objective of this repair design is to reconstruct and rock armor the wave berm along the upstream embankment slope, as well as rock armor the naturally formed plunge basin to prevent future erosion and potential impacts on the embankment and principal spillway system.

2.1 Non-Personal Services

The Government shall neither supervise Contractor employees nor control the method by which the Contractor performs the required tasks. Under no circumstances shall the Government assign tasks to, or prepare work schedules for, individual Contractor employees, except for the site lead. It shall be the responsibility of the Contractor to manage its employees and to guard against any actions that are of the nature of personal services or give the perception of personal services. If the Contractor believes that any actions constitute, or are perceived to constitute personal services, it shall be the Contractor’s responsibility to notify the Contracting Officer, in writing, immediately.

2.2 Contractor Personnel Qualifications

Quality control activities shall be accomplished by competent personnel. A competent person is: One who is experienced and capable of identifying, evaluating, and documenting that materials and processes being used will result in work that complies with the contract; and, who has authority to take prompt action to remove, replace, or correct such work or products not in compliance. Off-site testing laboratories shall be certified or inspected by a nationally recognized entity. Prior approval of each personnel, qualifications, authorities, certifications, and availability of the competent personnel who will perform the quality control activities shall be required.

2.3 Key Personnel

The Contractor shall assign to this contract the following key personnel:

1. Site Superintendent

2. Quality Control Manager

3. Safety Manager

During the first ninety (90) calendar days of performance, 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, in writing, within 15 calendar days after the occurrence of any of these events and provide the information required below. After the initial 90-day period, the Contractor shall submit the information required below to the Contracting Officer at least 15 calendar days prior to making any permanent substitutions.

The Contractor shall provide a detailed explanation of the circumstances necessitating the proposed substitutions, complete resumes for the proposed substitutes, and any additional information requested by the Contracting Officer. Proposed substitutes should have comparable qualifications to those of the persons being replaced. The Contracting Officer will notify the Contractor within 15 calendar days after receipt of all required information of the decision on substitutions. The contract will be modified to reflect any approved changes of key personnel.

2.4 Location and Hours of Work

Work under this contract is performed on site of Hickory Creek Dam 14 located in Denton County, Texas. Construction schedule will be required, prior to issuance of Notice to Proceed (NTP). Estimated performance time is 131 days, not to include move in.

The Contractor shall be responsible for establishing their work hours under this contract, except when access to a Federal facility is required, in which case the Government may limit the Contractors access based availability of agency employees. However, Contractor employees in possession of a valid HPDS- 12 PIV-II Compliant Credential (e.g., LincPass) can work unaccompanied at government locations upon Government approval. See Section SOW 5.1 for additional information.

Weather and security closures by their nature usually arise without advance notice. As such, the Government will notify the Contractor as soon as possible once any closures have been announced.

2.6 Invoicing

Invoices shall be submitted to the Construction Inspector for review and acceptance. Invoices shall be submitted monthly. Approved quantities documentation and related material certifications shall be required as appropriate.

Invoices must be submitted electronically through the Invoice Processing Platform (IPP) system and in accordance with the payment clause(s) in the contract.

2.7 Identification of Contractor Personnel

Contractor employees, including subcontractors, who attend meetings, send emails, answer Government telephones or place calls, or work in situations where their actions could be construed as acts of Government officials, must clearly identify themselves as Contractor employees.

3 REQUIREMENTS/TASKS

See attached Construction : Bid Schedule, Drawings, Specifications.

The Contractor shall:

3.1 Pre-Construction Meeting

Meet with NRCS quality assurance personnel with submittals for required construction documents and certifications.

3.2 Mobilization, Fence Removal and Removal of Water

This item shall consist of performing all items of work for mobilization and demobilization, all operations necessary to accomplish the work including that work required to control water from entering the plunge basin or affecting wave berm construction, as well as removal of water from all borrow and designated excavations, the removal, disposal and/or salvage of all designated fences in the construction area

3.3 Excavation, Common

This item shall consist of all excavation required to construct the new riprap lined wave berm as shown on the drawings.

3.4 Earthfill, Rock Riprap

This item shall include all fill and backfill necessary for the completion of the wave berm subgrade as indicated in the construction drawings, furnishing and placing the rock riprap to construct the rock lined wave berm, Rock shall conform to the gradation requirements of ASTM 6092 R-150,

3.5 Topsoiling, Vegetation

This item shall consist of salvaging of approved topsoil from required excavations; from the stripping operations; and placing and spreading it on all areas designated to receive topsoil including the embankment, constructed earthfill slopes, and exposed excavated slopes not covered in rock riprap as indicated on the drawings, preparing the seedbed and furnishing and applying seed, hay mulch and/or tackifer, as well as fertilizer to all areas disturbed by construction, as well as within the boundaries of the designated campsite, designated haul/access roads, stockpile area, waste area, and borrow area(s) .

3.6 Fence

This item shall consist of furnishing all materials required and constructing fences of the type designated on the drawings.

4 DELIVERABLES/SCHEDULE.

Timely completion of deliverables is essential to a successful outcome. Below are the required due dates for each requirement/task.

Item No.

Deliverable Reference Due

1 Pre-Construction Meeting. SOW Section 3.1 Mutually acceptable date and time after contract award.

2 Mobilization, Fence Removal and Removal of Water.

SOW Section 3.2 Within 55 calendar days of contract award.

3 Excavation, Common. SOW Section 3.3 Within 56 calendar days of contract award.

4 Earthfill, Rock Riprap SOW Section 3.4 Within 80 calendar days of contract award

5 Topsoiling, Vegetation SOW Section 3.5 Within 93 calendar days of contract award

6 Fence SOW Section 3.6 Within 96 calendar days of contract award

5.5 Organizational Conflicts of Interest

The Contractor acknowledges that it is familiar with Federal Acquisition Regulation (FAR) Subpart 9.5, Organizational and Consultant Conflicts of Interest, and agrees to avoid, neutralize or mitigate such conflicts of interest in accordance with the principles set forth in the FAR. If the performance would require the Contractor, including subcontractors, to provide services related to systems or projects with which the Contractor is already directly concerned, either by prime or subcontract, that would cause an organizational conflict of interest, the Contractor shall immediately notify the Contracting Officer, in writing, and not perform the work until direction is provided by the Contacting Officer.