EUON_Site_Drainage_Assess_SOW_7_19_23.pdf

EUGENE O’NEILL NHS (EUON) SITE DRAINAGE AND IRRIGATION ASSESSMENT

- PMIS 333520

SCOPE OF WORK (SOW)

PART 1 GENERAL / ADMINISTRATIVE

1.1 DESCRIPTION

A. Summary: The Work of this contract includes the following:

1. Inspection and assessment of the exterior drainage system of the Tao House at Eugene

O’Neill NHS located at 205 Railroad Ave., Danville CA 94526. Inspection includes confirmation of condition of the subsurface drain system adjacent to the house and the condition of the roof drainage system including all gutters and downspouts on the house.

2. Inspection and assessment of the existing irrigation system on the site to ascertain condition of system components and the extent that the system is connected to the municipal water system.

3. Preparation of a written narrative describing existing conditions and recommendations for repairs and modifications to the drainage and irrigation systems. All recommended work shall comply with all applicable local, state and federal regulations and reflect existing field conditions.

4. Cost Estimate(s) for all recommended work.

5. Period of performance is 9/11/2023-12/15/2023

6. See Part 3 – Execution for detailed description of requirements.

B. Work shall be completed in a workman like manner.

C. Work shall be performed by an experienced landscape contractor, licensed in the state of California.

1. Experience: See requirements under Quality Assurance below.

2. License: At a minimum Contractor shall carry a C-27 California Landscaping License.

D. Special Contractual Requirements:

1. Historic Buildings and Sites: The park where the Work will be performed is a National

Historic Site. (NHS) and the building where the work will be performed is a historic structure.

a. All investigation shall be performed using the gentlest mean possible to achieve the requirements of the contract.

b. Contractor shall ensure that historic features are not damaged by the work of this contract. Any historic feature damaged shall be restored to its condition prior to damage to the satisfaction of the Government, at no additional cost to the Government.

c. All recommendations shall consider the historic nature of the site and buildings.

2. Occupied Premises: The site and buildings may be occupied throughout the assessment period.

1.2 SOW CONTENTS

A. Part 1 – General/Administrative

1.1 Description

1.2 Contents

1.3 Definitions

1.4 Quality Assurance

1.5 Submittals

1.6 Project Conditions

B. Part 2 – Products – Not used

C. Part 3 – Execution

3.1 Assessment of Exterior Drainage at Tao House and Courtyard

3.2 Assessment of Irrigation System at Eugene O’Neill NHS

1.3 DEFINITIONS

A. Owner/Government: The sites and buildings where the work will be performed are owned by the US Government - National Park Service (NPS). The term Government is used throughout the SOW to denote the Owner. The following Government personnel will administer the contract.

1. Contracting Officer (CO): The Government is represented by an NPS Contracting

Officer for this contract. The contracting officer will administer the contract and be the

Contractors’ main point of contact throughout the course of the Work.

2. Contracting Officer’s Representative (COR): The CO may appoint a COR to assist in the administration of the contract and provide technical assistance. The COR and their roles and responsibilities will be made known to the Contractor at the time of the

Preconstruction Conference or before.

B. Contractor: The person or entity holding the contract and responsible for successfully completing the work of the contract.

1. Contractor shall appoint a single point of contact for the Government for the duration of the Work.

1.4 QUALITY ASSURANCE

A. Landscaping Contractor’s Qualifications: Contractor shall have a minimum of 3 years’ experience performing similar assessments.

1. See submittal requirements below.

1.5 SUBMITTALS

A. Submittals Required with Offer:

1. All submittals required by the solicitation.

B. Preconstruction Submittals: The Government will provide a list of required

Preconstruction Submittals to be provided by the Contractor before a Preconstruction

Conference is held. The Work shall not begin until the Government provides Notice to

Proceed following the Preconstruction Conference.

C. Submittals: Submit with the Government’s CM-16 Transmittal form, sequentially numbered for each submittal.

1. Draft Report of Findings and Recommendations of Assessment.

2. Draft Cost Estimates – cost estimates shall be provided at the same time as the Draft

Report to facilitate Government planning process.

3. Final Report of Findings and Recommendations of Assessment – incorporating all agreed upon Government comments.

4. Final Cost Estimates.

5. Copies of all digital files to be submitted on USB flash/thumb drive.

1.6 PROJECT CONDITIONS

A. Work Hours: Work shall be generally performed during normal business hours of 7:00 a.m. to 3:30 p.m., Monday through Friday, except when otherwise indicated. No working on federal holidays.

1. Weekend Hours: Weekend work is not allowed without prior written approval of the

Government. Contractor shall request weekend work a minimum of forty-eight (48) hours in advance and shall provide a written work plan for Government approval.

Approval of weekend work will be contingent on no additional cost to the project for

Government oversight.

2. Early Morning Hours: Early morning work (before 7:00 am) is not allowed.

B. Site Access: The Tao House is located in a residential neighborhood with limited access. Contractor shall cooperate with the Government in accessing the work site and with all parking requirements.

C. Limited Use of Site: Contractor shall have limited use of the project site. Limit use of premises to areas agreed to by the Government. Do not disturb portions of project site beyond areas in which the Work is indicated.

D. Preservation of Natural Features:

1. Prevent damage to natural surroundings. Restore damaged areas, repairing or replacing damaged trees and plants, at no additional expense to the Government.

2. Provide temporary barriers to protect existing trees and plants and root zones.

3. Do not remove, injure, or destroy trees or other plants, roots and branches without prior

Government approval.

4. Do not fasten ropes, cables, or guys to existing trees.

PART 2 PRODUCTS – NOT USED

PART 3 EXECUTION

3.1 ASSESSMENT OF EXTERIOR DRAINAGE AT TAO HOUSE AND COURTYARD

A. Intent: Excess rainwater and roof drainage overwhelms the drainage system of the Tao

House. There is water infiltration into the basement and water approaching some thresholds of the first floor of the building. The Government believes there is a subsurface drainage system around the perimeter of the building, however this does not appear to be functioning properly.

B. Contractor shall make a visual inspection of existing roof drainage system including all gutters and downspouts. Assess the existing condition of gutters and downspouts.

Assessment shall also consider the effect of roof drainage on other building component

(walls, door thresholds, windowsills, paving, etc.) and on the landscape.

C. Using video technology inspect subsurface drain system around the perimeter of the house. Assess condition of existing drain tiles/pipes; whether there are any damaged or missing tiles; and whether there are any blockages. Determine the location of all drain lines, tie-ins and the system outlet.

D. Assessment Report: Provide a written narrative describing investigation findings and recommendations for repairs and modifications to the drainage system.

1. In addition to the narrative provide measured drawings

a. Provide an Existing Conditions Site Plan showing location of all drain lines, tie-ins and outlets.

b. Provide an Existing Conditions Roof Plan noting the locations of all gutters and down spouts and any drainage deficiencies of the roof system.

c. Provide a schematic Site Plan showing all recommended modifications to the drainage system.

E. Cost Estimate: Provide a detailed estimate of costs to make the recommended repairs and modifications to the drainage system.

F. Provide digital copies of all video data compiled during the investigation on USB flash/thumb drive.

3.2 ASSESSMENT OF IRRIGATION SYSTEM AT EUGENE O’NEILL NHS

A. Intent: The park has two sources of water. The original source (still used today) is a natural spring that fills two historic redwood tanks and is used to irrigate much of the historic landscape including orchards and ornamental landscaping. However, current water usage suggests that some of the property is being irrigated with municipal water.

The Government’s intent is to abandon the connections to municipal water and convert the entire irrigation system to use the on-site spring-water.

B. Assessment shall address the following:

1. Investigate the condition of all irrigation piping, heads and controls. Address needed repairs to existing piping, heads and controls in detail in recommendations.

2. Ascertain the extent of irrigation system connected to municipal water and provide recommendations for modifying the system to connect to on-site spring water. Address needed modifications to supply piping, heads and controls in detail in recommendations.

C. Assessment Report: Provide a written narrative describing investigation findings and recommendations for repairs and modifications to the irrigation system.

1. Provide Existing Conditions Site Plans showing location of all existing irrigation piping heads and controls. Denote piping and heads attached to municipal water supply.

2. Provide schematic Site Plan showing recommended modifications to the existing irrigation system.

D. Cost Estimate: Provide a detailed estimate of costs to make the recommended repairs and modifications to the irrigation system.

END OF SECTION