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TableContinued Trend Analysis Resul — Second Quarter 2014 Corral Hollow Sanitary Landfill (Units mg/I unless noted) Sample Description MW-9A MW-l0A MW-11A Sampling Date: "Significant" "Significant" "Significant" July 18,2013 Trend Trend Trend Monitoring and Field Parameters General Water Quality Parameters pH(Units)(field) None None None Electrical Conductivity None Decr None (US/cm) Turbidity(NTU)(field) Decr None -None Constituents of Concern Bicarbonate Alkalinity as None None None HCO3 Carbonate Alkalinity as CaCO3 None None None ----- _.—.. ._.. --------------------- Chloride Decr Decr Decr _...-- ..............._.._._.._._-............_...... Nitrate as Nitrogen None None None Sulfate one Decr Decr Total Dissolved SolidsNone Decr Decr --- - --_._ _ _._—._..........--- Calcium None None None Ma nesium None None None Sodium None None None -- -----..__...--........_._._J.__._._........__.__... ..__......___----- _Potassium_ — tNone^^--� --None ..............._None_ Volatile Organic Compounds 8260)(ug/L) Chloroform _ D . _ ..N 11-Dichloroethane ND ND ND ---' —.._._.._..._... — _._..._.._.__._..._._..---...._--..._.............— ..._..._......-........_.._.....I..........._........ _._._ Dichlorodifluoromethane ND ND None Cis-1,2-Dichloroethene ND ND (— None 1,2-Dichloropropane —_._......__.__...__._....__ND--- -—ND - None _._.....___._....._...__-- Methylene chloride ND ND ND Tetrachloroethene PCE ND None None __..— (PCE) ..........................._.......... Trichloroethene(TCE) None None Trichlorofluoromethane None ND ND Vinyl Chloride ND ND ND List only includes organic compounds detected in one or more samples Incr=Statistically significant increasing trend Decr=Statistically significant decreasing trend None=No statistically significant trends Corral Hollow Sanitary Landfill 24 Department of Public Works/Solid Waste 2nd Quarter 2014 Groundwater Monitoring County of San Joaquin-July 15,2014