Chevron Pipe Line Company Pasco Bulk Terminal

Facility Site ID: 55763995 Cleanup Site ID: 4867

  • Site Status

  • Cleanup Started

Site History

The former Chevron Pipe Line Company Pasco Bulk Terminal Site is 33 acres. Marathon Petroleum Corporation (Marathon) now owns the site; however, Tesoro Logistics Operations LLC (Tesoro) is responsible for cleanup. The Tidewater Terminal Company operates pipelines at the site.

The site has 18 tanks that store petroleum products above ground. It has been a bulk fuel storage facility since 1950. Fuel is transported to and from the terminal by pipelines, fuel trucks, and a barge loading and unloading dock on the Snake River next to the terminal.

In 1976, a release of 665 barrels, or about 28,000 gallons of petroleum, was reported at the site. Since then, previous owner Chevron documented 10 additional petroleum releases. Of these post-1976 releases, two were over 1,000 gallons.

In the mid-1980s, petroleum products were found in groundwater monitoring wells at the site, and petroleum sheen was seen along the Snake River bank. Investigations found that a pipe transferring aviation fuel was leaking. All terminal-related pipelines were removed from just below the ground surface in the area of the sheen. Contaminated soil and fuel product were removed from just below the ground surface and along the shoreline and replaced with clean soil. Additional actions were taken to address the groundwater contamination, and more monitoring wells were installed.

In 2000, a gasoline release was found at the site coming from a hole in the Tidewater transfer pipeline that moves fuel to the terminal. Tidewater conducted soil and groundwater investigations and work to clean up contaminants.

We investigated the site and added it to the Hazardous Sites List in 2000.

Cleanup

In August 2009, Ecology entered into an Agreed Order with Chevron and Tidewater that required them to conduct a Remedial Investigation and Feasibility Study at the site that they completed in 2011. The Remedial Investigation looked at past and current site conditions and the effectiveness of past cleanup actions. The Feasibility Study evaluated cleanup options.

Following this investigation and review of cleanup options, Ecology published the first Cleanup Action Plan. We chose cleanup alternative 1, which allowed remaining contaminants to dissipate naturally over time, required the upkeep of physical barriers that limit access and land use, and provided signage for the restricted area. Alternative 1 includes a restriction on groundwater use. No groundwater may be taken from the site except for use related to the cleanup, such as groundwater monitoring. Additionally, site owners are required to monitor the groundwater and confirm that contamination is being reduced through the natural process. This monitoring will continue until results meet state standards for at least one year.

In 2016, Ecology negotiated an Agreed Order with Tesoro, the company that bought the terminal from Chevron. This order required Tesoro to complete a Supplemental Remedial Investigation and Feasibility Study, which was published in 2021. This investigation provided more information about past and current site conditions, cleanup actions that have been completed and their effectiveness, and what needs to be done at the site to further protect human health and the environment.

In 2023, Ecology published the second Cleanup Action Plan using the updated information from the Supplemental Remedial Investigation and Feasibility Study. The plan describes the actions Tesoro is taking to finish cleaning up the site:

  • Increase oxygen in groundwater by adding sleeves with oxygen-releasing compounds to the monitoring wells. Oxygen helps break down petroleum in groundwater more quickly.
  • Continue monitoring groundwater quality to track cleanup progress.
  • Maintain barriers to keep the public from accessing the site and contacting contamination, including signs, fences, and prohibiting groundwater use.

The estimated cleanup time for this plan is 5 to 15 years at a cost of $786,400. Marathon acquired the terminal from Tesoro in 2018, but Tesoro continues to manage the cleanup.

Legal 13
Document Title Document Date Document Type
Agreed Order DE 12989 Satisfaction Letter 4/18/2023 Order Notice of Satisfaction/Status
Agreed Order Exhibit C, Scope of Work and Schedule 4/11/2023 Agreed Order
Cleanup Action Agreed Order Exhibit B Cleanup Action Plan 4/11/2023 Agreed Order
Cleanup Action Agreed Order Exhibit A, Site Plan 4/11/2023 Agreed Order
Cleanup Action Agreed Order 4/11/2023 Agreed Order
Agreed Order for CAP: Chevron Pipe Line Co. Pasco Bulk Terminal 4/11/2023 Agreed Order
Marathon PLP Determination Deferment Letter 3/21/2022 Final Potentially Liable Person Status Letter
Tesoro Agreed Order RI/FS 3/23/2016 Agreed Order
Final Agreed Order: Chevron Pipe Line Co Pasco Bulk Terminal 3/23/2016 Agreed Order
Chevron Pipe Line Co Pasco Bulk Terminar - DRAFT Agreed Order 1/20/2016 Agreed Order
SEPA Checklist - Chevron Pipe Line Company - Pasco DCAP 12/31/2012 Settlement Agreement (court allocated liability)
Chevron Pasco Bulk Fuel Terminal Agreed Order 12/4/2009 Agreed Order
Chevron Pipeline Pasco AO 8/1/2009 Agreed Order
Map 1
Document Title Document Date Document Type
Chevron Pipe Line Co Pasco Bulk Terminal - DRAFT Map 1/20/2016 Map
Public Information 14
State Environmental Policy Act 2
Document Title Document Date Document Type
SEPA Checklist Chevron Pipe Line Company DCAP 12/31/2012 SEPA Documents
SEPA DNS for Chevron Pipeling Company - Pasco DCAP 12/31/2012 SEPA Documents
Technical Reports 41
Document Title Document Date Document Type
Final Engineering Design Report 1/31/2024 Engineering Design Report
Final Compliance Monitoring Plan 1/31/2024 Site Specific Administrative Document - other (Administrative correspondence)
Ecology comments on the Engineering Design Report and the Compliance Monitoring Plan 9/27/2023 Site Specific Technical Document - other
Cleanup Action Public Comments Determination memorandum, no public comments 3/20/2023 Site Specific Administrative Document - other (Administrative correspondence)
Cleanup Action Plan: Chevron Pipe Line Co. Pasco Bulk Terminal 1/24/2023 Cleanup Action Plan
Final Supplemental RI/FS report 9/30/2021 Remedial Investigation / Feasibility Study
Supplemental Remedial Investigation/Feasibility Study Report: Chevron Pipe Line Co. Pasco Bulk Terminal 9/30/2021 Remedial Investigation / Feasibility Study
Public Comments on the Draft Final Remedial Investigation and Feasibility Study Report, no public comments 9/21/2021 Site Specific Administrative Document - other (Administrative correspondence)
Public Comments Determination memorandum 9/21/2021 Site Specific Administrative Document - other (Administrative correspondence)
Memorandum, RI/FS report Public Comment Period, no public comments 9/21/2021 Site Specific Administrative Document - other (Administrative correspondence)
Ecology Letter, Comments on the draft RI/FS report 4/21/2021 Site Specific Administrative Document - other (Administrative correspondence)
RI/FS Workplan 10/19/2019 Remedial Investigation Work Plan
Final 2018 Grab Sampling Soil and Groundwater Data Submittal -- Supplemental RI/FS Investigation 3/6/2019 Progress Report
Soil and GW grab data supplemental RI investigation fall of 2018 11/16/2018 Remedial Investigation Report
Request to add new RI investigation wells to GW monitoring network 11/14/2018 Remedial Investigation Work Plan
First Semi-annual Groundwater Monitoring Report, 2018 10/11/2018 Groundwater Monitoring Report
Ecology Concurrence Letter, Supplemental RI/FS Investigation 4/19/2018 Site Specific Administrative Document - other (Administrative correspondence)
Addendum to Supplemental Remedial Investigation/Feasibility Study 4/12/2018 Remedial Investigation Work Plan
2nd Semi-annual GW Monitoring 2017 report 12/26/2017 Groundwater Monitoring Report
Addendum To Supplemental Remedial Investigation Feasibility Study 12/10/2017 Remedial Investigation / Feasibility Study
1st Semi-annual 2017 GW Monitoring Data Transmittal 7/27/2017 Groundwater Monitoring Report
Chevron Fuel Terminal, Pasco, GW Monitoring Report S1, 2017 7/27/2017 Groundwater Monitoring Report
Change of Ecology's Project Coordinator under Agreed Order No. DE 12989 7/25/2017 Site Specific Administrative Document - other (Administrative correspondence)
Approval of the Supplemental RI/FS Workplan 7/6/2017 Site Specific Technical Document - other
Ecology Comments on RI/FS Workplan 5/4/2017 Site Specific Technical Document - other
Change of Ecology's Project Coordinator under agreed Order No. DE 12989 3/15/2017 Site Specific Administrative Document - other (Administrative correspondence)
Riverbank Sampling Results 2/21/2017 Site Specific Technical Document - other
2nd Semi-annual 2016 Groundwater Monitoring Data Transmittal 1/6/2017 Groundwater Monitoring Report
1st Semi-annual 2016 Groundwater Monitoring Data Transmittal 12/27/2016 Groundwater Monitoring Report
Supplemental Ri/FS Workplan 3/31/2016 Remedial Investigation Work Plan
Chevron Pipe Line Co Pasco Bulk Terminal - DRAFT Scope of Work 1/20/2016 Scope Of Work
Change of Ecology's Project Coordinator under Agreed Order No. 7294 12/23/2015 Site Specific Administrative Document - other (Administrative correspondence)
Chevron Pipe Line Company Cleanup Action Plan 12/31/2012 Final Cleanup Action Report
RI FS Report Appendices E-H 9/29/2011 Remedial Investigation / Feasibility Study
RI FS Report Appendices A-D 9/29/2011 Remedial Investigation / Feasibility Study
RI FS Report Figures 11A-14 9/29/2011 Remedial Investigation / Feasibility Study
RI FS Report Figures 7-10B 9/29/2011 Remedial Investigation / Feasibility Study
RI/FS Report Figures 1-5 9/29/2011 Remedial Investigation / Feasibility Study
RI/FS Report Tables 1-7 9/29/2011 Remedial Investigation / Feasibility Study
Remedial Investigation and Feasibility Study Report (RI/FS) 9/29/2011 Remedial Investigation / Feasibility Study
Report of Geotechnical Services (Jet fuel spill removal) 6/22/1987 Interim Action Documents
There may be more documents related to this site. To obtain documents not available electronically, you will need to make a public records request.

Places to see print documents

  • Eastern Regional Office
    N 4601 Monroe St
    Spokane, 99205-1265
    Please schedule an appointment to view print documents at this location.
  • Mid-Columbia Library, Pasco Branch
    1320 West Hopkins Street
    Pasco, 99301
    This location may only have print documents available during open comment periods.

Contaminants 1

Contaminant Type
Soil
Groundwater
Surface Water
Air
Sediment
Bedrock
Non-Halogenated Organics - Petroleum Products-Unspecified C C
S
Suspected
C
Confirmed Above Cleanup Levels
B
Below Cleanup Levels
RA
Remediated-Above
RB
Remediated-Below
R
Remediated
This contaminant list was based on our best information at the time it was entered. It may not reflect current conditions at the site.