Hearing set March 29 on proposal to expand area for injecting oil and gas waste into aquifer near Piru

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Map from the application for the area proposed to be expanded at the Holser Oil Field near Piru to allow oil and gas waste to be injected into an aquifer.

Holser Oil Field Water Well Survey.  

An online public hearing is set for Tuesday, March 29, at 5:30 p.m. to consider allowing an oil company to inject its oil and gas production waste into an aquifer it hopes to expand from 64 acres to 111 acres in an area about 3.3 miles east-northeast of Piru. It is in the area of the Holser Oil Field in eastern Ventura County.

To see the application, visit:

For detailed information on the proposed exemption, visit

To register for the Zoom hearing on March 29:

Written comments on the proposal can be submitted through 5 p.m. on April 13 to This email address is being protected from spambots. You need JavaScript enabled to view it..

The hearing will consist of a presentation on the Aquifer Exemption process and the exemption of the oil-bearing portions of the Holser Aquifer from provisions.

For detailed information on the proposed exemption, visit:

The Underground Injection Control Program regulations allow the Environmental Protection Agency to allow underground sources of water that do not currently — and “will not serve as a source of drinking water in the future, based on certain criteria” — to be used by energy, mining and other companies for disposal and oil- and mineral-extraction purposes.

Disposal means injecting fluids associated with oil and natural gas production into the aquifers.

For more information on the Underground Injection Control Program, visit

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Graphic via the California Department of Conservation












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