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Table 1 <br /> First Quarter 2013 Groundwater Monitoring Results -Shallow Aquifer <br /> Corral Hollow Sanitary Landfill <br /> (Units ml unless noted) <br /> Monitoring Point SB-1 MW-4 MW-5 MW-8 <br /> Monitoring Date Date I Conc. Date Cone. Date Cone. Date Cone. <br /> 1/28/13 Limit 1/28/13 Limit 1/28/13 Limit Trend 1/28/13 Limit <br /> Monitoring and Field Parameters <br /> Elevations fje�et ......... <br /> TOC Elevation 275.46 NR 246.67 NR 300.93 NR NR 305.66 NR <br /> ............. <br /> NR 18.35 NR 68.90 NR NR 78.72 NR <br /> Depth to Groundwater 41.62 <br /> Groundwater Elevation 233.84 NR 228.32 NR 232,03 NR NR 226.94 NR <br /> General Water Quality Parameters <br /> Tem erature('C)(field) 1 19.3 1 NR 18.80 NR 18.80 NR NR 18.90 NR <br /> _.pH(units)(field) 7.38 6.89-7.7 7.20 NS <br /> 6.78-8.0 7.12 6.89-8.1 7.81 6.89-8.2 <br /> Electrical Conductivity <br /> NS <br /> 2,400 659.3 820 <br /> (US/cm) (field) 1079 1,700 1920 3,400 1239 <br /> Turbidity(NTU (field19.7 deer 200 41.7 200 16.1 180 48.6 66 <br /> ) ) <br /> Constituents of Concern <br /> Bicarbonate Alkalinity as NS <br /> 700 <br /> 590 290 320 <br /> 650 700 410 510 <br /> HCO3 <br /> Carbonate Alkalinity as NS <br /> ND 680 ND 5 ND 780 ND 220 <br /> CaCO3 <br /> oride 280 NS <br /> 16 120 160 650 110 36 84 <br /> ,d&W <br /> Mate as Nitrogen ND 42 11 59 14 45 NS 10 14 <br /> Sulfate 38 67 490 1300 12 660 deer 15 26 <br /> Total Dissolved Solids 660 810 1300 2000 770 1500 incr 390 460 <br /> Calcium 80 <br /> 100 160 210 120 170 NS 57 <br /> M�,eesium 25 32 60 85 36 47 NS 16 <br /> 84 53 <br /> 160 180 240 <br /> 110 NS <br /> Sodium 120 <br /> Potassium 3.1 5.3 6.1 7.9 3.4 5.3 NS 3.1 <br /> Volatile Organic Copipounds.*8260B) u <br /> detect <br /> detect 034* detect NS ND <br /> Chloroform ND detect ND <br /> I,I-Dichloroethane ND detect ND detect 0.26* detect NS 0.53 detect <br /> Dichlorodifluoromethane ND detect ND detect 7.2 detect deer 6.1 detect <br /> detect ND detect 0.47* detect incr 0.16* <br /> detect <br /> Cis-1,2-Dichloroethene ND <br /> 1,2-Dichloropropane ND detect ND detect 0.13* detect deer ND detect <br /> detect 0.73* detect NS ND detect <br /> Methylene chloride ND detect ND <br /> Tetrachloroethene(PCE) ND detect ND detect 5.3 detect incr 5.3 detect <br /> detect ND detect 0.69 detect deer 0-38* detect <br /> Trichloroethene(TGE) ND <br /> ............- ........... <br /> Trichlorofluoromethane ND detect ND detect 4.4 detect NS 7.6 <br /> detect <br /> detect 0.34* detect deer ND detect <br /> Vinyl Chloride ND detect 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 <br /> blanks <br /> MCL=Maximum Contaminant Levels NL=Not Listed Bold values indicate a detected organic compound. <br /> S=Not statistically significant deer=significantly decreasing trend incr=significantly increasing trend <br /> �erlined values indicate a concentration limit exceedance. I=Insufficient data for statistical analysis <br /> Not established due to statistically significant increasing trend. Concentration limit from WDRs. <br /> Corral Hollow Sanitary Landfill 19 Department of Public Works/Solid Waste <br /> Is'Quarter 2013 Groundwater Monitoring County of San Joaquin-April 15,2013 <br />