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M m <br /> X p <br /> Table 2-2 <br /> Summary of Impacts and Mitigation Measures <br /> `" Significance Significance <br /> C <br /> Impacts Before Mitigation Measures After <br /> Mitigation Mitigation <br /> 4.9-12: Effects of Proposed Project Discharges on Iron LTS No mitigation is necessary. LTS <br /> (Dissolved)Concentrations in Receiving Waters.Dissolved <br /> iron mass loading to the San Joaquin River is projected to be <br /> slight relative to existing in-stream loads.Projected dissolved <br /> iron concentrations in the San Joaquin River would be <br /> substantially below the Basin Plan objective of 300µg/l and <br /> mass loadings would be minor compared to measured upstream <br /> dissolved iron concentration.The project would be designed and <br /> operated to comply with the NPDES permit effluent limits for <br /> dissolved iron would result in downstream dissolved iron <br /> concentrations that are substantially below adopted water quality <br /> objectives.Therefore,the project's near-field iron impacts <br /> would be less than significant. <br /> 4.9-13: Effects of Proposed Project Discharges on LTS No mitigation is necessary. LTS <br /> wManganese(Dissolved)Concentrations in Receiving Waters. <br /> Dissolved manganese mass loading to the San Joaquin River is <br /> projected to be slight relative to existing in-stream loads. <br /> Additionally,projected dissolved iron concentrations in the San <br /> v Joaquin River are substantially below adopted Basin Plan <br /> objective.The project would be designed and operated to <br /> v comply with the NPDES permit effluent limits for dissolved <br /> manganese would result in downstream dissolved iron <br /> p concentrations that are substantially below adopted water quality <br /> v objectives.Therefore,the project's near-field manganese <br /> impacts would be less than significant. <br /> n <br /> 0 4.9-14: Effects of Proposed Project Discharges on Methylene LTS No mitigation is necessary. LTS <br /> CD <br /> _ Blue Active Substances(MBAS)Concentrations in Receiving <br /> Waters.The project would be designed and operated to comply <br /> CO <br /> with the NPDES permit effluent limits for MBAS,which are,in <br /> turn,based on the lowest criteria determined to be protective of <br /> E: beneficial uses. The proposed project is projected to produce <br /> �? treated effluent having an average total manganese concentration <br /> o -u of 160µg/1,which is well below the adopted Basin Plan <br /> ZZ v objective. Therefore,the project's near-field MBAS impacts <br /> m m <br /> would be less than significant. <br /> v �u <br /> LTS=Less than Significant S=Significant PS=Potentially Significant SU=Significant and Unavoidable <br />