Whittier Narrows Water Reclamation Plant Diversion Initial Study and Negative Declaration

3 Documents in Project


SCH Number
Lead Agency
Los Angeles County Sanitation District
Document Title
Whittier Narrows Water Reclamation Plant Diversion Initial Study and Negative Declaration
Document Type
NEG - Negative Declaration
Present Land Use
The area north of the site is generally reserved for recreational uses; farther north is a southern CA Edison easement, north of the site is a land sublet by LACSD to a nursery, Rosemead blvd is directly east of the site, south of the site is an area of OS, the Rio Hondo Channel extends Northwest and runs immediately west of the site, and the San Gabriel River is southeast of the site.

Document Description
The district is proposing to supply approx 72 acre feet per year (0.06 M gallons per day) of treated wastewater to San Gabriel Valley Water Company for non-potable uses, primarily including landscape irrigation. The district currently discharge approx 6.12 mgd (10 year average from 2007 to 2016) to either the Rio Hondo or the San Gabriel River from Whittier Narrows Water Reclamation Plan from three different points of discharge (no. 011, 002, 004). The discharged recycled water flow to all three discharge points is used for groundwater recharge through percolation within either the Rio Hondo or San Gabriel River or connected spreading basins. The proposed project would reduce WNWRP treated wastewater discharges by approx 1.1 % (0.06 mgd of the 6.12 mgd), equivalent to 72 afy from the over 7,000 afy produced. Approx 27% of the 72 AFY would be reduced from the San Gabriel River discharges; 73 % from the Rio Hondo watershed.

Contact Information
Jodie Lanza
Los Angeles County Sanitation District
Lead/Public Agency
1955 Workman Mill Road
Whittier, CA 90601

Phone : (562) 908-4288 x2707


34°02'42"N 118°07'"W
Los Angeles
Cross Streets
Rosemead Blvd and San Gabriel Blvd
Total Acres
Parcel #
5271-009-900, -901, -902, -110-901, -903, -904, -906, -907, -011-900, -902, -903, -904
State Highways
Rio Hondo and San Gabriel River

Notice of Completion

Review Period Start
Review Period End
Development Type
Water Facilities (Type recycled water r)
Local Action
Project Issues
Aesthetics Agriculture and Forestry Resources Air Quality Biological Resources Cultural Resources Cumulative Effects Flood Plain/Flooding Geology/Soils Growth Inducement Hazards & Hazardous Materials Hydrology/Water Quality Land Use/Planning Mineral Resources Noise Population/Housing Public Services Recreation Schools/Universities Transportation Vegetation Wildfire
Reviewing Agencies
California Department of Fish and Wildlife, South Coast Region 5 (CDFW) California Department of Parks and Recreation California Highway Patrol California Native American Heritage Commission (NAHC) California Regional Water Quality Control Board, Los Angeles Region 4 (RWQCB) California State Lands Commission (SLC) Colorado River Board Department of Water Resources Office of Emergency Services, California Resources Agency San Gabriel and Lower Los Angeles Rivers and Mountains Conservancy (RMC) State Water Resources Control Board, Division of Drinking Water State Water Resources Control Board, Division of Drinking Water, District 7 State Water Resources Control Board, Divison of Financial Assistance California Department of Transportation, District 7 (DOT)

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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