Irvine Desalter Project

6 Documents in Project

Summary

SCH Number
1989010086
Lead Agency
U.S. Bureau of Reclamation
Document Title
Irvine Desalter Project
Document Type
NOD - Notice of Determination
Received
Posted
1/17/2007
Present Land Use
Research and Industrial

Document Description
The Irvine Desalter Project (IDP) is a joint groundwater quality restoration project by the Orange County Water District (OCWD) and the Irvine Ranch Water District (IRWD) to clean up the groundwater in the vicinity of the former Marine Air Corps Station (MCAS) El Toro base. The natural geology and past agricultural drainage have resulted in undesirable levels of total dissolved solids (TDS) or salts and nitrates in the local groundwater. Separately, past chemical disposal and waste handling practices at the former MCAS have caused seepage of volatile organic compounds (VOCs) such as trichloroethylene (TCE) into both the shallow and principal aquifers on and adjacent to the former MCAS. By pumping and treating groundwater containing elevated salts and nitrates, the IDP will largely prevent the migration of salts and nitrates from the Irvine Sub-basin into the main Orange County groundwater basin, which is located just west of Irvine. The project will also prevent VOC-contaminated groundwater from spreading into the main Orange County aquifer. By providing reliable new sources of local potable and non-potable waters, the IDP will reduce dependency on non-local water sources. The project consists of three separate systems of wells and pipelines and three separate water treatment plant facilities: the Potable Treatment of Plant (PTP), SGU treatment facilities (non-potable), and Central Treatment Plant (CTP, non-potable). Each system operates independently, with separate wells, pipelines, and treatment facilities. The only component of the IDP under the authority of the California Department of Health Services permit amendment is the Potable Treatment Plant.

Contact Information
Shu-Fang Orr
California Department of Health Services
Santa Ana District 28 Civic Center Plaza #325
Santa Ana, CA 92701

Phone : (714) 558-4410

Location

Cities
Irvine
Counties
Orange
Cross Streets
Waterworks Way / Odyssey
Zip
92618
State Highways
I-5, 405
Railways
OCTA Metrolink
Airports
(former) MCAS El Toro
Schools
Irvine Valley College
Waterways
San Diego Creek
Base
SB

Notice of Determination

Approving Agency
California Department of Health Services
Approving Agency Role
Responsible Agency
Approved On
Final Environmental Document Available at
Orange County Water District 10500 Ellis Avenue Fountain Valley, CA 92708

Determinations

(1) The project will have a significant impact on the environment
No
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
Yes
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
No
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
No
(3) Mitigated measures were made a condition of the approval of the project
No
(4) A mitigation reporting or monitoring plan was adopted for this project
N/A
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
N/A

Disclaimer: The document was originally posted before CEQAnet had the capability to host attachments for the public. To obtain the original attachments for this document, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613.

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