ARCHIVED REPORTS_DRAFT ENVIRONMENTAL IMPACT REPORT

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Near and Far Field Dilution Analysis of Manteca Discharge October 2006 Figure 25 Dilution contours for Human Health, 17.5 MGD simulation with side bank dischargeand with diffuser...............................................................................................28 Figure 26 Dilution contours for Human Health, 27 MGD simulation with side bank dischargeand with diffuser...............................................................................................29 Figure 27 Comparison of dilution across the river channel for the diffuser and the side bank discharge with 27 MGD Manteca discharge and Acute river flow conditions. Plot is for time and location of minimum dilution diffuser case. Twenty-five percent of the channel cross-section at minimum dilution is noted for each discharge case................... 34 Figure 28 Contours of computed temperature increment on December 6, 2002 from the Thermal Plan Exception study winter historical low river flow (900 cfs), 9.87 MGD intermittent, side bank discharge simulation. ................................................................... 35 Figure 29 Contours of computed surface temperature increment on December 6, 2002 from the Thermal Plan Exception study winter historical low river flow(900 cfs), 9.87 MGD intermittent, side bank discharge simulation.......................................................... 36 Figure 30 Cross sections of computed temperature increment on December 6, 2002 from the Thermal Plan Exception study winter historical low river flow(900 cfs), 9.87 MGD intermittent, side bank discharge simulation. ................................................................... 37 Figure 31 Contours of computed temperature increment on December 3, 2002 from preliminary winter historical low river flow(900 cfs), 28 MGD intermittent, side bank dischargesimulation. ........................................................................................................ 38 Figure 32 Contours of computed surface temperature increment on December 3, 2002 from preliminary winter historical low river flow(900 cfs), 28 MGD intermittent, side bank discharge simulation................................................................................................. 39 Figure 33 Cross sections of computed temperature increment on December 3, 2002 from preliminary winter historical low river flow(900 cfs), 28 MGD intermittent, side bank dischargesimulation. ........................................................................................................40 Figure 34 Finite element mesh for far field simulations..................................................44 Figure 35 Sacrament and San Joaquin River flows during the 1991 - 1992 simulation period. ...............................................................................................................................45 Figure 36 Sacrament and San Joaquin River flows during the 2002 simulation period..45 Figure 37 Far field dilution simulation times series plot locations..................................46 Figure 38 Tidally averaged tracer concentrations for the 1991-1992 simulation at Clifton Courtintake.......................................................................................................................47 Figure 39 Tidally averaged tracer concentrations for the 1991-1992 simulation at DMC intake.................................................................................................................................47 Figure 40 Tidally averaged tracer concentrations for the 1991-1992 simulation at the Contra Costa intake in Rock Slough.................................................................................48 Figure 41 Tidally averaged tracer concentrations for the 1991-1992 simulation at the Contra Costa intake on Old River.....................................................................................48 Figure 42 Tidally averaged tracer concentrations for the 1991-1992 simulation at San JoaquinRiver at Light 18..................................................................................................49 Figure 43 Tidally averaged tracer concentrations for the 1991-1992 simulation at the StocktonTurning Basin. ...................................................................................................49 Figure 44 Tidally averaged tracer concentrations for the 2002 simulation at Clifton Court intake................................................................................................................................. 52 vii