East County Advanced Water Purification

2 Documents in Project

Summary

SCH Number
2022040551
Lead Agency
East County Advanced Water Purification Joint Powers Authority
Document Title
East County Advanced Water Purification
Document Type
NOD - Notice of Determination
Received
Posted
7/22/2022
Document Description
Project Background The Project is a partnership between the Padre Dam Municipal Water District (District), Helix Water District, County of San Diego, and City of El Cajon for the purpose of creating a new local, sustainable, and drought-proof water supply using state-of-the-art technology. The District previously adopted the Project MND (SCH No. 2018091029), approved a Mitigation Monitoring and Reporting Program (MMRP), and approved the Project in 2018. In February 2020, the East County Advanced Water Purification (AWP) Joint Powers Authority (JPA) approved a resolution considering the Project Mitigated Negative Declaration (MND) under the California Environmental Quality Act (CEQA), adopting the approved MMRP and approving the Project. The JPA is now implementing the Project in east San Diego County. The approved Project will recycle East San Diego County’s wastewater locally, purify the water at an Advanced Water Treatment Plant, and transport the purified water to Lake Jennings for surface water augmentation. The Project is an element of the Comprehensive Facilities Master Plan approved by the District through the 2017 Program Environmental Impact Report. The District is a member of the JPA and the Administrator of the Project. The JPA is the CEQA lead agency for the Project. The Project will capture and treat approximately 15 million gallons per day of wastewater generated within the East County area to produce an annual average of approximately 11.5 mgd of new local drinking water supply. Byproducts from the Project’s solids handling and AWP facilities will include brine and centrate, collectively referred to as residuals. The approved Project includes a residuals bypass system that will convey brine from the AWP facility, and centrate from the solids dewatering process of the solids handling facility, to an existing regional sewage pipeline (the gravity line) owned and operated by the City of San Diego for treatment and disposal. Project Modifications In coordination with the City of San Diego, the JPA has evaluated a modification of the approved Project to construct and operate a regional brine line (RBL) to convey the residuals generated by the Project around the City of San Diego’s Pure Water Program facilities. In lieu of discharging the residuals into the existing gravity line as described in the previously approved Project, the RBL would consist of a pipeline built within the existing East Mission Gorge Force Main pipeline and extending from the existing East Mission Gorge Pump Station to the City of San Diego’s South Mission Valley Trunk Sewer. The JPA has evaluated other minor modifications to the approved Project to avoid existing utilities, avoid rocks and hard surfaces, minimize impacts to sensitive biological resources, accommodate alternative construction methodologies, and address new information. The Subsequent MND evaluates the environmental impacts of the Project modifications approved by the JPA.

Contact Information

Name
Mark Niemiec
Agency Name
East County Advanced Water Purification Joint Powers Authority
Job Title
Director of AWP
Contact Types
Lead/Public Agency

Location

Cities
San Diego, Santee
Counties
San Diego
Regions
Countywide, Southern California, Unincorporated
State Highways
SR 125, SR 52, SR 67
Railways
San Diego Trolley
Airports
Gillespie Field
Schools
Numerous
Waterways
Forester Creek, San Diego River

Notice of Determination

Approving Agency
East County Advanced Water Purification Joint Powers Authority
Approving Agency Role
Lead Agency
Approved On
County Clerk
San Diego
Final Environmental Document Available at
https://eastcountyawp.com/185/Public-Notices

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
No
(2b) A Mitigated or a Negative Declaration was prepared for this project pursuant to the provisions of CEQA
Yes
(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
Yes
(4) A mitigation reporting or monitoring plan was adopted for this project
Yes
(5) A Statement of Overriding Considerations was adopted for this project
No
(6) Findings were made pursuant to the provisions of CEQA
No

Attachments

Notice of Determination

Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, 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. For more information, please visit OPR’s Accessibility Site.

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