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Table 1 <br /> Fourth Quarter 2012 Groundwater Monitoring Results - Shallow Aquifer <br /> Corral Hollow Sanitary Landfill <br /> (Units mg/1 unless noted) <br /> Monitoring Point S13-1 MW-4 M`W-5 MW-8 <br /> Monitoring Date Date Cone. Date Cone. Date Cone. Date Cone. <br /> 10/15/12 Limit 10/15/12 Limit 10/15/12 Limit <br /> Trend 10/15/12 Limit <br /> Monitoring and Field Parameters <br /> Elevations ffeet) <br /> NR 305.66 NR <br /> TOC Elevation 275.46 NR 246.67 NR 300.93 NR <br /> NR <br /> De th to Groundwater 41.30 NR 21.37 NR 69.31 NR NR 78.80 <br /> NR <br /> Groundwater Elevation 234.16 NR 1 225.3 NR 231.62 NR NR 226.86 <br /> General Water Quality Parameters <br /> 23.0 NR <br /> Te perature('C)(field 26.5 NR 23.00 NR NR NR 22.7 <br /> NS <br /> Electrical Conductivity(US/cm) NS <br /> 1091 1,200 1751 3,400 1232 2,400 663.5 <br /> 1,600 <br /> 48.7 70 <br /> 37.7 200 17.4 <br /> Turbidity(I <br /> _(Bel 27.7 200 190 NS <br /> Constituents of Concern <br /> Chloride 16 120 130 650 100 280 NS 35 450 <br /> 13 45 14 <br /> Nitrate as Nitrogen ND 42 10 59 NS 9.7 <br /> Sulfate 37 69 460 1300 11 .660 deer 15 110 <br /> 810 1300 2000 780 1500 incr 410 1300 <br /> issolved Solids 680 <br /> detect <br /> Chloroform ND detect ND detect 039* detect NS ND <br /> detect <br /> 1,1-Dichloroethane ND detect ND detect 0.27* detect incr 0.62 <br /> 8.9 detect deer 7.6 detect <br /> Dichlorodifluoromethane ND detect ND detect <br /> detect <br /> Cis-1,2-Dichloroethene ND detect ND detect 0.42* detect incr 0.15* <br /> detect <br /> detect ND detect 0.15* detect deer ND <br /> 1,2-Dichloropropane ND <br /> Tetrachloroethene(PCE) ND detect ND detect 5.2 detect iner 5.1 detect <br /> detect <br /> Trichloroethene(TCE) ND detect ND detect 0.71 detect deer 0.35* <br /> detect 5.5 detect NS 8.7 detect <br /> Trichlorofluoromethane ND detect ND <br /> detect ND detect 0.36* detect deer ND detect <br /> Vinyl Chloride ND <br /> detect <br /> All Other Corn <br /> pounds ND detect ND detect ND detect NS ND <br /> NR=Not Required ND=Not Detected *Trace Concentration(estimated value) <br /> NE=Not established,due to>50%non-detects NT=Not Tested Parameter also detected in one or more quality control blanks <br /> MCL=Maximum Contaminant Levels NL=Not Listed <br /> NS=Not statistically significant deer significantly decreasing trend <br /> I=Insufficient data for statistical analysis incr significantly increasing trend <br /> Underlined values indicate a concentration limit exceedance. <br /> ,[I] Not established due to statistically significant increasing trend. Concentration limit from WDRs. <br /> Bold values indicate a detected organic compound. <br /> Corral Hollow Sanitary Landfill 21 Department of Public Wnrks/GolidWaste <br /> 4~Quarter and Annual zo1uGroundwater Monitoring County vfSan Joaquin-January 18.2n10 <br />