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[1 Tem erature °C field 24.8 1 NR -- p - (..--..f__.�_ _-' pH (units) field) ; 7.10 6.89-7.7 Table 1 23.80 _ 6.91 NR _.- 6.89-8.1 NR NS Third Quarter 2013 Groundwater Monitoring Results - Shallow Aquifer _ Electrical Conductivity1079 j 1,700 1819 3,400 Corral Hollow Sanitary Landfill j 2,400 NS 669.5 810 (US/CM) (field) j _ Turbidity (NTU) (field) 1 41.3 ( 200 (Units mg/1 unless noted) 16.7 _ 180 1 deer Monitoring Point SB -I MW -4 MW -5 i 680 MW -8 Monitoring Date Date Conc. ; Date 1 Conc. Date Conc. I 780 Date Conc. 7/18/13 Limit 7/18/13 i Limit 7/18/13 j Limit 's Trend 7/18/13 Limit Monitoring and Field Parameters NT = Not Tested {) Parameter also detected in one or more quality control Chloride Elevations (feet) j 120 110 650 1 _ TOC Elevation; 27_5.46 Depth to Groundwater 41.68 NR 246.67 j NR 300.93 NR NR 21.25 NR 69.03 ,1 NR j NR NR 1 305.66 78.78 i NR NR Groundwater Elevation E 233.78 ! NR 225.42 NR ( 231.90 ! NR i NR j 226 88 NR 1 NS 10 13 Sulfate --� 34 67 4301300 11 660 deer ! 14 Tem erature °C field 24.8 1 NR -- p - (..--..f__.�_ _-' pH (units) field) ; 7.10 6.89-7.7 23.60 1 NR ' 7.11 6.78-8.0�` 23.80 _ 6.91 NR _.- 6.89-8.1 NR NS 23.1 NR 7.43 6.89-8.2 _ Electrical Conductivity1079 j 1,700 1819 3,400 1308 j 2,400 NS 669.5 810 (US/CM) (field) j _ Turbidity (NTU) (field) 1 41.3 ( 200 18.4 1 200 16.7 _ 180 1 deer 16.9 66 1 Bicarbonate Alkalinity as ; NT 700 I NT 510 I 590 690 ! NS j NT s 330 HCO3 ND detect 0.39* detect incr 1 ND 1 detect Tetrachloroethene (PCE) i ND detect 4.3 j detect incr 4.4 j detect Trichloroethene (TCE) ND detect Carbonate Alkalinity as NT 680 NT I 5 I ND I 780 NS j NT 220 CaCO3 NR = Not Required ND = Not Detected *Trace Concentration (estimated value) € NT = Not Tested {) Parameter also detected in one or more quality control Chloride 16 j 120 110 650 1 100 1 280 NS 1 33 84 Nitrate as Nitrogen ND 42 i 9.2 ! 59 13 45 1 NS 10 13 Sulfate --� 34 67 4301300 11 660 deer ! 14 26 Total Dissolved Solids 700 810 1 1300 1 2000 1 770 i 1500 incr ; 280 450 Calcium s NT 100_ NT 210 140 170 NS NT I NT 31 I NT 82 40 46 NS ( NT j I Magnesium Sodium 1 NT 160 NT 240 1 98 i 110 NS ? NT I Potassium I NT 1 5.1 1 NT 1 7.2 1 3.8 j 4.7 1 NS NT ; I Atile Orsanic Compounds *82605) (uG/L 1,1-Dichloroethane i ND 1 detect 1 ND 1 detect 0.20* 1 detect ; incr 1 0.51 detect Dichlorodifluoromethane 1 ND detect ND 1 detect 6.9 I detect deer 6.8 ( detect Cis-1,2-Dichloroethene ND detect ND detect 0.39* detect incr 1 ND 1 detect Tetrachloroethene (PCE) ND 1 detect i ND detect 4.3 j detect incr 4.4 j detect Trichloroethene (TCE) ND detect ND j detect j 0.58 C detect deer 1 0.34* 1 detect Trichlorofluoromethane ND ; detect ! ND detect 1 3.9 1 detect NS 1 7.1 detect Vinyl Chloride ND detect i ND detect 0.32* detect deer ND detect NR = Not Required ND = Not Detected *Trace Concentration (estimated value) NE = Not established, due to > 50% non -detects NT = Not Tested {) Parameter also detected in one or more quality control blanks MCL = Maximum Contaminant Levels NL = Not Listed Bold values indicate a detected organic compound. NS = Not statistically significant deer = significantly decreasing trend incr = significantly increasing trend Underlined values indicate a concentration limit exceedance. I = Insufficient data for statistical analysis [1] Not established due to statistically significant increasing trend. Concentration limit from WDRs. Corral Hollow Sanitary Landfill 19 Department of Public Works/Solid Waste 3`d Quarter 2013 Groundwater Monitoring County of San Joaquin - October 15, 2013