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SELECTION OF WATER QUALITY CONSTITUENTS Table 7: Water Quality Constituents Identified for Near-Field and Far-Field Analyses(Continued) Water quality constituents were selected for quantitative near-and far-field analyses based on Monitoring availability of adequate detected data in effluent and one or more of the following conditions: Constituent Location Data Source(s) Selected for Analysis 1. WQCF received an effluent limitation for a particular constituent in Order No.R5-2004- Dissolved Oxygen(DO) Stockton Ship Regression model)2) Far-Field 0028, Channel 2. Constituent was identified as a pollutant/stressor on the proposed 2006 Clean Water Act Ammonia as Nitrogen WQCF R-1 13267 monitoring data, Near-Field p P P Self-monitoring data Section 303(d)list for select Delta waterways, Arsenic,Dissolved WQCF R-1 13267 monitoring data Near-Field 3. Constituent for which an adopted TMDL exists downstream of WQCF discharge,and Copper,Dissolved WQCF R-1 13267 monitoring data Near-Field 4. Constituent is an historic pollutant of concern in the Delta Cyanide,Total WQCF R-1 13267 monitoring data Near-Field Thirty-three water quality parameters were initially identified for evaluation based on the four Iron,Dissolved WQCF R-1 Special studies Near-Field criteria listed above. Eighteen parameters were ultimately selected for near-field and/or far-field monitoring data analysis(see constituents in bold typeface presented in Table 7)based on availability of data and Manganese,Dissolved WQCF R-1 Special studies Near-Field detection of constituent in WQCF effluent. monitoring data Methylene Blue Active WQCF R-1 13267 monitoring data Near-Field Substances(MBAS) Table 7: Water Quality Constituents Identified for Near-Field and Far-Field Analyses WQCF R-1 13267 monitoring data Near-Field Monitoring Nitrate as Nitrogen Multiple Delta Constituent Location Data Source(s) Selected for Analysis locations DWR-MWQI Far-Field Biochemical Oxygen Demand SJR at Mossdale DWR-MWQI Near-Field Nitrite as Nitrogen WQCF R-1 13267 monitoring data Near-Field Bridge(BOD) _. _..._. No,constituent non- Total Suspended Solids(TSS) WQCF R-1 Special studies Near-Field Bis(2-ethylhexyl)phthalate WQCF R-1 Self-monitoring data detect in effluent; monitoring data detection limit>WOO Total Coliform WQCF R-1 WQCF self-monitoring No,non-conservative for some data points. parameter No,new UV TurbidityWQCF R-1 WQCF self-monitoring No,non.conservative disinfection process g parameter�'i Bromodichloromethane WQCF R-1 13267 monitoring data, will bring effluent - -- Self-monitoring data concentration of Settleable Solids -- No data available No parameter below the No,non-conservative level of detection Chlorine Residual WQCF R-1 WQCF self-monitoring hi parameter No,ne.w UV Oil and Grease --- No data available No disinfection process 13267 monitoring data, Dibromochloromethane WQCF R-1 13267 monitoring data, will bring effluentAluminum,Total WQCF R-1 Near-Field Self-monitoring data concentration of Self-monitoring data parameter below the Near-Field WQCF R-1 13267 monitoring data, level of detection Self-monitoring data Mercury WQCF R-1 Self- monitoring data, Near-Field DWR-MWQI, Self-monitoring data Electrical Conductivity(EC) DO Study-Stockton, No,constituent non- locations Multiple Delta DO Study-UOP, Far-Field 2,4,6-Trichlorophenol WQCF R-1 Self-monitoring data detect in effluent; Stockton RWCF self- detection limit<WQO monitoring SJR transects DWR-MWQI, between WQCF Self-monitoring data, Dissolved Organic Carbon Multiple Delta Temperature Thermal Plan Exception Near-Field g p DO Study-Stockton, Far-Field R-1 and WQCF Stud data DO Study-DWR (DOC) locations R-2,inclusive y Chlorpyrifos --- 13267 monitoring data No,constituent non- detect in effluent City of Manteca Antidegradation Analysis 23 June 2007 City of Manteca Antidegradation Analysis 24 June 2007