A2_12_PWS_Putah_Creek_Remediation_1.pdf

Performance Work Statement Remediation, Gasoline Underground Storage Tank (UST) Site, Former Putah Creek November 13, 2026

1.0 General Description

This is a non-personal services contract to remediate contaminated soil and groundwater at the Former Putah Creek Resort (Site) located at 7600 Knoxville Road in Napa County, California.

The Government shall not exercise any supervision or control over the contract service providers (i.e. subcontractors) performing the services. Such contract service providers shall be accountable solely to the Contractor who, in turn, is accountable to the Government.

2.0 Background

A Corrective Action Plan (CAP, Att. 1) was prepared under purchase order R15PX00826 and approved by the Central Valley Regional Water Quality Control Board (CVRWQCB).

3.0 Period of Performance

Base Year March 15, 2027, to March 14, 2028 Option Year 1 March 15, 2028, to March 14, 2029 Option Year 2 March 15, 2029, to March 14, 2030 Option Year 3 March 15, 2030, to March 14, 2031 Option Year 4 March 15, 2031, to March 14, 2032

This project will be for 5 years, and has a base period of 1 year, with four, 1-year, option years.

Option years will be exercised as needed to accomplish the remediation efforts and site closure.

4.0 Government Furnished Property, Equipment, and Services: NONE

5.0 Contractor Furnished Items and Services

The Contractor shall provide all equipment, supplies, management, supervision, personnel, and transportation except as specified herein as government-furnished, necessary to assure that all services are in accordance with the contract and all applicable laws and regulations. The contractor shall ensure all work meets performance standards specified in this Performance Work Statement (PWS).

6.0 Site Access

The Contractor shall allow subcontractors access to the Site for work on groundwater monitoring and remediation as required by Technical Reporting Order, aka Monitoring and Reporting Order (MRP) R5-2012-0800 (Att. 2), pursuant to Cleanup and Abatement Order R5-2009-0704 (Att.

3). The Contractor shall carry out all future groundwater monitoring and remediation work at the Site.

There will be development activities taking place by Park Concessionaires in the vicinity of the Site. The Concessionaire must be allowed access to the existing concrete pad and the Above ground Storage Tank (AST) for fuel vending and storage. Ongoing coordination between the Contractor, Reclamation, and Concessionaire shall be provided to ensure fuel distribution operations do not interfere with the cleanup project.

7.0 Specific Tasks

The Contractor shall implement the Corrective Action Plan that has been approved by the CVRWQCB. This includes all tasks and requirements stated within the CAP. Pending authorization from the CVRWQCB, this may include rebound testing and the next actions needed to achieve site closure, in addition to monitoring, reporting and any remaining remediation.

A. Soil Vapor Extraction (SVE)/Air-Sparging (AS) System Operation: This task includes oversight of the remediation system, including operation and maintenance.

The Contractor shall perform site visits on a weekly basis (at minimum) or as outlined in a future Final Remediation Plan during the period of operations. The Contractor shall provide all materials, parts, labor and utility operations needed to ensure the remediation system operates at least 95 percent of the time, at no additional cost to the Government.

The Contractor shall take care that consumables, such as activated carbon, are replenished well before they are expended and no longer effective.

The Contractor shall take note of high-wear parts and plan to replace them before the end of their service life, to minimum system down-time.

B. Groundwater Performance and Regulatory Monitoring: The Contractor shall perform periodic groundwater monitoring (monitoring) required by the wastewater (NPDES) permit and as required by the Monitoring and Reporting Order R5-2012-0800.

Note: during monitoring, a few surface water samples shall be collected in addition to the groundwater samples and are thus included in this sampling regime. Laboratory analysis of the above water samples shall be performed by a California-certified laboratory, such as ELAP certification.

This laboratory shall use analytical methods that are specified in the CAP or are in accordance with updated state regulations, all of which shall be EPA Federal Reference Methods or EPA Approved Standard Methods.

Monitoring shall be performed on a quarterly basis, with a transition to a semiannual or other monitoring regime when directed by CVRWQCB.

Each monitoring event shall include sampling 19 or more monitoring wells and 2 or more surface water samples from Lake Berryessa, per the direction of the CVWRQCB.

Groundwater samples shall be analyzed for site constituents of concern and for indicators of biodegradation, aka Monitored Natural Attenuation, parameters.

Surface water samples shall be analyzed for site constituents of concern. Through the course of groundwater monitoring and SVE/AS system operation, wastewater called Investigation-Derived Waste (IDW) will be generated. The Contractor shall characterize and dispose of this IDW in compliance with State permits, such as transport permits and disposal in a permitted wastewater facility.

C. Regulatory compliance: As part of the remedial effort, routine regulatory reporting shall be included by the Contractor under previous tasks above.

This regulatory responsibility will belong to the Contractor by Agent designation for as long as cleanup contract is active.

During operation of the SVE/AS system, monthly air emissions testing shall be performed, and the data shall be reported to the Bay Area Air Quality Management District (BAAQMD) under a permit established by the Contractor with the BAAQMD.

Current reporting and monitoring efforts are specified in the technical reporting order R5- 2012-0800, referred to as the monitoring and reporting plan (MRP).

This MRP R5-2012-0800 specifies that reports will be submitted quarterly on existing reporting dates until authorized by CVRWQCB, whereupon monitoring may transition to a semiannual basis or other monitoring regime as directed by CVWRQB as the site closure process proceeds.

Current reporting is performed by the Contractor via State of California website, GeoTracker, though the mechanism by which the Contractor continues to report the data may change over time at the direction of CVRWQCB.

The reports shall be signed and certified, i.e. Stamped, by a registered California Professional Geologist in accordance with section 7 of the MRP. Reclamation shall be provided with electronic copies of all reports prior to submittal to the CVRWQCB.

Monitoring and analysis will proceed according to the schedule below:

End of 1st Quarter – March 31st End of 2nd Quarter – June 31st End of 3rd Quarter – September 31st End of 4th Quarter – December 31 st.

8.0 Project Schedule

The SVE/AS remedy is a multi-year project.

This contract includes one year of monitoring operation and maintenance, with additional option years to be awarded at the Government’s discretion as needed to meet CVRWQB requirements.

The CAP states that the SVE/AS system can be shut down when the Total Petroleum Hydrocarbons (TPH) extraction rates are less than five pounds per day and groundwater monitoring data are acceptable. However, given certain changes to the regulatory environment in recent years, shutdown may also be sooner than the CAP criteria, at the discretion of CVRWQB. Upon shutdown, rebound testing will begin if directed by CVWRQB for a likely period of one year.

Pending the results of rebound testing, the CVWRQB may require:

1. Continued monitoring,

2. SVE/AS system restarting and continued operation and monitoring,

3. Modification of the SVE/AS system with follow-on operation and monitoring,

4. A different course of action, as chosen by CVWRQB to achieve site closure.

Note:

- Under scenarios 1 and 2, work will occur under this contract.

- Under scenario 3, monitoring will continue under this contract. Modification of the

SVE/AS system will either occur under a modification to this contract or under a separate contract, depending upon the complexity of the modification and at the discretion of the Government.

- Under scenario 4, future action is indeterminate. However, if future actions include monitoring, this work may continue under this contract. Similarly, if future actions include operation of the SVE/AS system without modification, this word may occur under this contract. All other actions are likely outside the scope of this contract.

9.0 Contract Changes

Additional services required by changes in mission assignments must be documented by a written contract modification. If the contractor receives a request from Reclamation personnel directing or requesting work that the contractor believes is not within the terms of the PWS or the contract, then the contractor must notify the Contracting Officer of the request. The only person that has the authority to modify the terms of the contract or request work for which compensation will be provided is the Contracting Officer.

10.0 Format and Review of Deliverables

The Contractor shall designate a Project Coordinator who shall be the primary point of contact with Reclamation’s Contracting Officers Representative (COR) on all matters related to scheduling, invoicing, and technical matters.

All submittals shall be provided to Reclamation in electronic format.

Draft work products will be produced in Microsoft Word and/or Excel. Draft work products will be clearly designated as such on the cover page. Final work products will be produced in both word and PDF format, fully editable, searchable and printable. Final work products will be clearly designed as such on the cover page.

Assigned Reclamation personnel will provide written, consolidated comments within 1 week of receipt if determined necessary by Reclamation.

All documents shall meet Reclamation’s Visual Identity Program.

All deliverables shall be submitted to the following address:

Bureau of Reclamation – Central California Area Office Attention: Brian Willard Via email: bwillard@usbr.gov Physical mail: 7794 Folsom Dam Road, Folsom, California 95630

11.0 Task Deliverables

Task Deliverables – Putah Creek Soil Underground Storage Tank

Soil Remediation

DUE DATE/COMPLIANCE TIMELINE

End of 1st Quarter – March 31st End of 2nd Quarter – June 31st

End of 3rd Quarter – September 31st End of 4th Quarter – December 31st

1. Final Remediation Plan (FRP) -This task includes Health and Safety Plan (HASP)

Upon completion, initial Draft FRP to be provided to COR for review and approval at least 2 weeks prior to the date that marks 6 months following contract award.

2. Well Installation Report To be provided to COR monthly as needed.

3. Quarterly Remediation Status Report As early in quarter as possible (see above due dates).

4. Monthly Air Emissions Testing Results To be provided to COR and BAAQMD monthly.

a. The Contractor shall perform the operation in accordance with all Federal, State, and local agency environmental regulations.

b. The Contractor shall provide all necessary equipment to safely perform the work and shall be responsible for acquiring all required permits prior to start of work.

c. The Contractor shall control all their operations during the performance of the work to ensure that the completed work meets all the requirements.

d. All contracted tasks must be completed during the scheduled day and time unless otherwise specified herein or authorized in advance by the Contracting Officer, or his/her authorized representative.

e. The Contractor shall have competent representatives, who are fully authorized by him/her to act in his/her capacity to fulfill the Contractor’s obligation to the Bureau of Reclamation contract.

f. All equipment, not covered in other sections of this contract, shall be of commercial quality, unless otherwise stated, and in a condition to adequately and safely perform services for which intended.

g. Caution and Safety: The Contractor’s personnel shall abide by all Bureau of Reclamation safety rules and regulations.

h. The Contractor should direct any questions regarding safety to the COR.

mailto:bwillard@usbr.gov

i. The Contractor’s equipment shall meet all safety standards as required by Federal, State, and Occupational Safety and Health Act (OSHA) standards.

j. The Contractor shall immediately notify the COR of all cases of death, occupational disease, or injury that occur within the scope of this contract.

k. Coordination: The Contractor shall coordinate its work with the COR. The Contractor shall notify the POC of all planned visits to the project site.

l. The Contractor shall respond to all communications from the POC in a timely manner.

12.0 Work Schedule

Work Schedule is standard government hours 8:00 am - 4:30 pm Monday – Friday, observing all federal holidays. If a different work schedule is preferred, the Contractor may provide a proposed work schedule to the COR for review. Approval of any alternate work schedule is solely at the Government’s discretion.

Federally Recognized Holidays:

• New Years’s Day • Labor Day

• Martin Luther King Jr’s Birthday • Columbus Day

• President’s Day • Veteran’s Day

• Memorial Day • Thanksgiving Day

• Juneteenth National Independence Day • Christmas Day

• Independence Day

13.0 Quality Assurance Surveillance Plan

Performance Requirement Acceptable Quality Levels (AQLs) Method of Surveillance

Contractor shall comply with all requirements of the Performance Work Statement; each task will be evaluated. If task isn’t ordered, it will be non-applicable.

a. Accuracy:

Tasks are performed within the specified tolerance 98% of the time.

b. Quality:

All work is performed to industry standard 100% of the time.

The COR shall verify completion with each service and task. The following methods will be used:

- Random Sampling

- 100% check

- Customer Inputs