Does residual oil that has been found in sites along the Old Valley Pipelines present a significant risk?

No. According to analytical testing and human health risk assessments conducted by Chevron, under the direction of the California Department of Toxic Substances Control, residual oil associated with former pipeline activities does not present a significant health risk.


How do I know if residual oil is present?

In general, soil that contains residual oil can be readily observed and may have a slight odor.


Where did the residual oil come from?

From the early 1900s to the early 1970s Chevron's predecessor companies operated the OVP and TAOC pipelines, which transported crude oil from Bakersfield to Richmond and Bunker "C" fuel from Richmond to Tracy. The residual oil is likely associated with those historic operations, but in some cases may be associated with the operations of other entities.


What should I do if I encounter oil-affected soil?

Please discontinue any subsurface activities in the area where oil-affected soil was encountered and contact Chevron Environmental Management Company (CEMC) at contact@hppinfo.com. CEMC will work with you to determine the proper course of action and assist with soil management/disposal as necessary.

Who do I contact if I am planning a construction project in a location adjacent to the historic pipeline?

Please contact the CEMC at contact@hppinfo.com. CEMC will work with you to determine the proper course of action.