List of Figures

Figure ES-1 Sanitation Districts of Los Angeles County

Figure 2-1 Regional Location of the Districts Service Area

Figure 2-2 JOS Drainage Areas

Figure 2-3 JWPCP Facilities

Figure 2-4 Location of Los Coyotes WRP

Figure 2-5 Location of San Jose Creek WRP

Figure 2-6 Location of Whittier Narrows WRP

Figure 2-7 Joint Water Pollution Control Plant Proposed Expansion for All Alternatives

Figure 2-8 Construction Schedule for the JWPCP

Figure 2-9 Los Coyotes WRP Proposed Expansion Alternative 1

Figure 2-10 San Jose Creek WRP Proposed Expansion Alternatives 1 and 4

Figure 2-11 Los Coyotes WRP Proposed Expansion Alternative 2

Figure 2-12 Whittier Narrows WRP Proposed Expansion Alternatives 3 and 4

Figure 2-13 Los Coyotes WRP Proposed Expansion Alternative 4

Figure 3-1 Major Surface Waters of the JOS Service Area

Figure 3-2 Water Reclamation Plant Treated Effluent Discharge Points and Tidal Prism along the San Gabriel River

Figure 3-3 Groundwater Contours for JOS Service Area

Figure 3-4 Location of 100-year Floodplain at Whittier Narrows WRP

Figure 4-1 Geographic and Topographic Features of the JOS Service Area

Figure 4-2 Regional Geology of the JOS Service Area

Figure 4-3 Faults in the JOS Service Area

Figure 4-4 Soil Associations in the JOS Service Area

Figure 4-5 Soil Profiles at Two JWPCP Locations

Figure 5-1 Location of the JWPCP Ocean Outfalls and Districts' Ocean Monitoring Stations

Figure 5-2 General Ocean Circulation of the Southern California Bight

Figure 5-3 Historical Flow and Suspended Solids Emissions Discharged through the JOS

Figure 5-4 Mass Emissions of Effluent Constituents from JWPCP Outfall, 1971-1993

Figure 5-5 Mass Emissions of DDT and PCBs from the JWPCP Outfall, 1971-1993

Figure 5-6 Seasonal Changes in Salinity, Density, and Temperature off the Palos Verdes Peninsula (5-Year Average, 1989-1993)

Figure 5-7 Seasonal Changes in Light Transmission, Dissolved Oxygen; and pH off the Palos Verdes Peninsula (5-Year Average, 1989-1993)

Figure 5-8 Concentration and Distribution of Contaminants in Palos Verdes Surface Sediments, and Benthic Infaunal Biomass in 1974, 1985, and 1992

Figure 5-9 Concentration, Depth, and Spatial Distribution of p,p’-DDE in Sediment Mound near the JWPCP Outfall

Figure 5-10 Concentration, Depth, and Spatial Distribution of p,p'-DDE in Sediments at Sampling Stations 3C and 6C near the JWPCP Outfall (1983-1989)

Figure 5-11 Changes in Kelp Bed Acreage along the Palos Verdes Peninsula between 1974 and 1992

Figure 5-12 Number of Benthic Species, Molluscs, and Arthropods Collected off the Palos Verdes Peninsula in 1974, 1985, and 1992

Figure 5-13 Mean Catch per Trawl of Several Demersal Fish Species from Three Sampling Depths near the JWPCP Outfall, 1973-1993

Figure 5-14 Median Concentration of DDT and PCBs in Dover Sole and Kelp Bass Muscle Tissue Collected Adjacent to the Outfalls, 1972-1992

Figure 5-15 Incidence of Fin Erosion in Palos Verdes Dover Sole off the Palos Verdes Peninsula, 1972-1993

Figure 7-1 Regional Transportation Network in the JOS Service Area

Figure 7-2 Los Angeles Basin Rail Network

Figure 7-3 1992 Average Daily Traffic Volumes

Figure 7-4 Existing Traffic Volumes (1994) at the Intersection of Sepulveda Boulevard and Figueroa Street

Figure 7-5 Projected 2002 Traffic Volumes at the Intersection of Sepulveda Boulevard and Figueroa Street

Figure 8-1 Wind Rose Depicting Average Winter Wind Speed and Directional Frequency at the San Pedro Station

Figure 8-2 Wind Rose Depicting Average Spring Wind Speed and Directional Frequency at the San Pedro Station

Figure 8-3 Wind Rose Depicting Average Summer Wind Speed and Directional Frequency at the San Pedro Station

Figure 8-4 Wind Rose Depicting Average Fall Wind Speed and Directional Frequency at the San Pedro Station

Figure 8-5 Wind Rose Depicting Average Winter Wind Speed and Directional Frequency at the Artesia Station

Figure 8-6 Wind Rose Depicting Average Spring Wind Speed and Directional Frequency at the Artesia Station

Figure 8-7 Wind Rose Depicting Average Summer Wind Speed and Directional Frequency at the Artesia Station

Figure 8-8 Wind Rose Depicting Average Fall Wind Speed and Directional Frequency at the Artesia Station

Figure 8-9 Wind Rose Depicting Average Winter Wind Speed and Directional Frequency at the El Monte Station

Figure 8-10 Wind Rose Depicting Average Spring Wind Speed and Directional Frequency at the El Monte Station

Figure 8-11 Wind Rose Depicting Average Summer Wind Speed and Directional Frequency at the El Monte Station

Figure 8-12 Wind Rose Depicting Average Fall Wind Speed and Directional Frequency at the El Monte Station

Figure 9-1 Construction Equipment Noise Ranges

Figure 10-1 Former Sludge Drying Bed Locations

Figure 11-1 Landscape Features of the JOS Service Area

Figure 11-2 Vegetation at the County Sanitation Districts JWPCP Marsh

Figure 11-3 Vegetation at the Whittier Narrows WRP

Figure 12-1 Existing Land Uses in the Vicinity of the JWPCP

Figure 12-2 Land Use Designations for the JWPCP Site and Vicinity

Figure 12-3 Zoning Designations for the JWPCP Site and Vicinity

Figure 12-4 City of Cerritos Land Use Designations for the Los Coyotes WRP and Vicinity

Figure 12-5 Zoning Designations for the Los Coyotes WRP and Vicinity

Figure 12-6 County of Los Angeles Land Use Designations for the San Jose Creek WRP and Vicinity

Figure 12-7 Zoning Designations for the San Jose Creek WRP and Vicinity

Figure 12-8 County of Los Angeles Land Use Designations for the Whittier Narrows WRP and Vicinity

Figure 12-9 Zoning Designations for the Whittier Narrows WRP Site and Vicinity

Figure 15-1 Mitigation Measures Proposed for Aesthetic Impacts at the JWPCP

Figure 16-1 Location of Buildings Predating 1944

Figure 16-2 Primary Treatment Maintenance Shop

Figure 16-3 Standby Effluent Pump Station