Addendum No. 1 to the Initial Study/Mitigated Negative Declaration for the Orange Park Acres Well Replacement Project

4 Documents in Project

Summary

SCH Number
2011061038
Lead Agency
Irvine Ranch Water District
Document Title
Addendum No. 1 to the Initial Study/Mitigated Negative Declaration for the Orange Park Acres Well Replacement Project
Document Type
NOD - Notice of Determination
Received
Posted
9/28/2021
Document Description
On February 6, 2020, the State Water Resources Control Board's Division of Drinking Water (DDW) issued revised drinking water Response Levels (RLs) of 10 parts per trillion (ppt) for perfluorooctanoic acid (PFOA) and 40 ppt for perfluorooctane sulfonate (PFOS). Notification Levels (NLs) for PFOA is set at 5.1 ng/L and 6.5 ng/L for PFOS. Further, on March 5, 2021 DDW issued a drinking water NL and RL of 0.5 parts per billion (ppb) and 5 ppb, respectively for perfluorobutane sulfonic acid (PFBS). While PFAS has been detected in IRWD's Well OPA-1, IRWD had previously removed this well from service in 2018, before the new, revised DDW standards were announced. The proposed Project is the construction of a water treatment system for the removal of per- and polyfluoroalkyl substances (PFAS)—more specifically PFOA and PFOS—from the groundwater extracted by the Well OPA-1. Additionally, the water treatment system would have the ability to treat PFBS, if needed. The project will treat groundwater from Well OPA-1 to ensure compliance with State NL and RL levels for PFAS and PFBS. An Addendum to the Initial Study/Mitigated Negative Declaration for the Orange Park Acres Well Replacement Project has been prepared for this Project.

Contact Information

Name
Jo Ann Corey
Agency Name
Irvine Ranch Water District
Contact Types
Lead/Public Agency / Project Applicant

Location

Cities
Orange
Counties
Orange
Regions
Southern California
Cross Streets
North Gravier Street and East Bond Avenue
Zip
92689
Total Acres
0.76
Parcel #
383-294-02
State Highways
State Route 55
Waterways
Santiago Creek and Santiago Creek Recharge Basin
Other Location Info
678 North Gravier Street and 660 North Gravier Street, City of Orange, County of Orange

Notice of Determination

Approving Agency
Irvine Ranch Water District
Approving Agency Role
Lead Agency
Approved On
County Clerk
Orange
Final Environmental Document Available at
Irvine Ranch Water District website: https://www.irwd.com/

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
No
(2c) An other document type was prepared for this project pursuant to the provisions of CEQA
Yes (Addendum No. 1 to the Initial Study/Mitigated Negative Declaration)
(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

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