Operation of City of Pasadena Water Department, Disinfection Facilities Phase: Centralized Chloramination and Blending Treatment for Nitrate, Perchlorate, VOCs,

5 Documents in Project

Summary

SCH Number
2007021112
Lead Agency
Pasadena, City of (City of Pasadena)
Document Title
Operation of City of Pasadena Water Department, Disinfection Facilities Phase: Centralized Chloramination and Blending Treatment for Nitrate, Perchlorate, VOCs,
Document Type
NOD - Notice of Determination
Received
Posted
4/12/2018
Present Land Use
Major Utility (Water reservoir and treatment plant)/Zoning: PS Zone (Public, Semi-Public District)/General Plan Designation: Institutional.

Document Description
SWRCB, as the responsible agency, has issued a water supply permit for this Project. The City adopted a Neg Dec. that included the installation of the disinfection facilities project phase, and the ion exchange treatment system project phase that will be constructed later. The Project will operate to disinfect water from five Sunset Wells using chloramine treatment prior to storage, and allow treatment of perchlorate and nitrate through blending with imported water within the Sunset Reservoir. The construction area for the Project is located on a flat surface (0.7 acre) in the former parking area of the Sunset Reservoir. Project installation included two chemical storage tanks, and an above-ground 2,344 gallon aqueous ammonia tank. In addition, three vaults were installed in series along the 20-inch collector pipeline near the containment structure. These include vaults for: sodium hypchlorite injection and flow metering, sampling chlorine and for ammonia injection, and monochloramine sampling. Construction included excavations to install the well, pipelines, and the disinfection facility; the disturbed area was restored with asphalt paving. All construction waste was transported to various recycle facilities in LA County.

Contact Information
Chi P. Diep
SWRCB
500 North Central Ave., Suite 500
Glendale, CA 91203

Phone : (818) 551-2004

Location

Coordinates
34.161°'"N 118.155°'"W
Cities
Pasadena
Counties
Los Angeles
Cross Streets
Near the intersection of Sunset Avenue and Mountain Street
Zip
91103
Total Acres
0.12
Parcel #
5728-021-916
State Highways
Hwy 210

Notice of Determination

Approving Agency
SWRCB
Approving Agency Role
Responsible Agency
Approved On
Final Environmental Document Available at
500 North Central Ave., Suite 500, Glendale, CA 91203

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
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
No

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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