Nitrification/Denitrification Project
4 Documents in Project
Summary
SCH Number
2001101120
Lead Agency
Los Angeles County Sanitation District
Document Title
Nitrification/Denitrification Project
Document Type
NOD - Notice of Determination
Received
Posted
9/13/2006
Document Description
The proposed projects will include the construction of NDN facilities at the Districts' five WRPs. The Projects' facilities include the modification of existing aeration basins incorporating either the Modified Ludzack-Ettinger or Step-Feed NDN processes. Due to capacity limitations at the WNWRP, a second clarifier will be added to the treatment system. The proposed facilities will provide for the removal of TIN and ammonia, allowing the Districts to meet the TIN and ammonia limits of existing WDR permits. However, by removing the ammonia in the wastewater to meet permit limits, the Districts are faced with the potential formation of THMs, a known carcinogen that forms during the chlorination disinfection process in the absence of ammonia. To achieve both removal of ammonia and reduction of THM formation, the Districts will add a small amount of ammonia to the wastewater prior to disinfection.
Contact Information
Name
James Hockenberry
Agency Name
State Water Resources Control Board
Contact Types
Lead/Public Agency
Phone
Location
Cities
Cerritos, El Monte, Long Beach, Pomona
Counties
Los Angeles
Cross Streets
Workman Mill & Crossroads Pkwy and others
Zip
90601
Total Acres
1
Parcel #
8115-004-906
State Highways
SR-60, I-605
Notice of Determination
Approving Agency
State Water Resources Control Board
Approving Agency Role
Responsible Agency
Approved On
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
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.