Whittier Narrows Water Reclamation Plant Diversion Initial Study and Negative Declaration

SCH Number: 2018071073
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
Received: 7/31/2018

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
1955 Workman Mill Road
Whittier, CA 90601
(562) 908-4288 x2707

Coordinates: 34°02'42"N 118°07'"W
Cities: Whittier
Counties: Los Angeles
Cross Streets: Rosemead Blvd and San Gabriel Blvd
Zip: 90601
Total Acres: 230.4
Parcel #: 5271-009-900, -901, -902, -110-901, -903, -904, -906, -907, -011-900, -902, -903, -904
State Highways: 19
Schools: various
Waterways: Rio Hondo and San Gabriel River
Township: unsec

Review Period Start: 7/31/2018
Review Period End: 8/29/2018
Development Type: Water Facilities (recycled water r Type)
Local Action: Other Action
Project Issues: Cumulative Effects Landuse Growth Inducing Water Supply Water Quality Vegetation Traffic/Circulation Toxic/Hazardous Soil Erosion/Compaction/Grading Schools/Universities Recreation/Parks Public Services Population/Housing Balance Noise Minerals Geologic/Seismic Forest Land/Fire Hazard Flood Plain/Flooding Biological Resources Archaeologic-Historic Air Quality Agricultural Land Aesthetic/Visual
Reviewing Agencies: Caltrans, District 7 California Department of Parks and Recreation California Highway Patrol Colorado River Board Department of Fish and Wildlife, Region 5 Department of Water Resources Native American Heritage Commission Office of Emergency Services, California Regional Water Quality Control Board, Region 4 Resources Agency San Gabriel & Lower Los Angeles Rivers & Mountains Conservancy State Lands Commission 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