White Slough WPCF Storage Expansion and Surface, Agricultural, and Groundwater Supply Improvement

4 Documents in Project


SCH Number
Lead Agency
City of Lodi
Document Title
White Slough WPCF Storage Expansion and Surface, Agricultural, and Groundwater Supply Improvement
Document Type
NOD - Notice of Determination
Present Land Use
Industrial, Public/Quasi Public
Document Description
The city of Lodi is proposing the construction of a 70-acre Expansion Pond and associated conveyance infrastructure at the City-owned White Slough WPCF. The Expansion Pond will consist of 4 individual ponds with an overall storage capacity of up to 388 acre-feet. The Expansion Pond will be used exclusively to store disinfected, tertiary-treated effluent produced by the WPCF for use as irrigation water on the 886.67 acres of agricultural land that surrounds the WPCF. The purpose of the project is to provide additional WPCF effluent supplies for agricultural irrigation on these properties and to offset groundwater pumping. The project would be funded by the DWR proposition 84 Grant Funding Program, which is intended to assist in the development of projects which increase agricultural and drinking water supplies, decrease groundwater pumping or assist in preserving water quality at source intakes. The City intends to divert filtered, disinfected recycled water tot eh new storage ponds. However, the diversion facilities that direct treated effluent to the existing storage ponds convey undisinfected secondary-treated water. Therefore, the Project needs to include new facilities that allow for diversion of tertiary flows separately from the existing effluent diversion facilities. Tertiary treated wastewater will be diverted from the effluent control chamber of the WPCF's existing Filter Pump Station structure and conveyed through a new 18-inch diameter pipeline. The Project will also include conveyance infrastructure to provide for delivery of the treated effluent from the new storage ponds to the City's existing irrigation water delivery system. During irrigation months (generally late April through Sept.) the new Tertiary Storage Pond Pump Station will pump stored water to the WPCF's existing main irrigation distribution box. From this location, the WPCF's existing irrigation distribution system can deliver this water to various City-owned agricultural fields. The White Slough WPCF requires expansion and additional measures to prevent excess surface water discharge tot eh Delta and decrease groundwater pumping for irrigation, rather than being discharged to the Delta. Overall, by combining the need to increase on-site wastewater storage with the need to reduce surface water discharge and groundwater pumping, the proposed project is anticipated to have a multitude of benefits that are both local and regional in scope. Some of the major benefits include increased irrigation water supply, improved surface water quality in the Delta, and the potential increase groundwater storage.

Contact Information

Craig Hoffman
Agency Name
City of Lodi
Contact Types
Lead/Public Agency


San Joaquin
Cross Streets
Thornton Rd and Hwy 12
Total Acres
Parcel #
055-190-01, -150-29, -130-16
State Highways
HWY 12
Kingdon Air Park
Sacramento-San Joaquin River Delta

Notice of Determination

Approving Agency
City of Lodi
Approving Agency Role
Lead Agency
Approved On


(1) The project will have a significant impact on the environment
(2a) An Environmental Impact Report was prepared for this project pursuant to the provisions of CEQA
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
(3) Mitigated measures were made a condition of the approval of the project
(4) A mitigation reporting or monitoring plan was adopted for this project
(5) A Statement of Overriding Considerations was adopted for this project
(6) Findings were made pursuant to the provisions of CEQA

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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