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1 <br /> TABLE 1 <br /> HARNEY LANE SANITARY LANDFILL <br /> FIRSf QUARTER 2007 GROUNDWATER MONITORING RESULTS <br /> Units m /I unless noted <br /> SgMpling Designation MW-1 MW-3 MW-4 MW-2 im acted <br /> Conc. Conc. Conc. Conc. <br /> Sampling Date 1/10/2007 1/10/2007 1/10/2007 1/10/2007 Trend <br /> Limit Limit Limit Limit <br /> Monitoring and Field Parameters <br /> Elevations(feet) <br /> TOC Elevations 100.89 NA 88.46 NA 89.29 NA 93.09 NA NR <br /> Depth to Groundwater 131.84 NA 121.77 NA 122.44 NA 126.48 1 NA I NR <br /> Groundwater Elevation -30.95 NA -33.31 NA -33.15 NA -33.39 NA NR <br /> General Water Quality Parameters <br /> Tem <br /> Electrical <br /> C field 18.8 NA 18.7 NA 18.8 NA 18.8 NA NR <br /> uS/cm field <br /> Electrical Condd uctivity 348 354 241 130 633 1100 334 480 None <br /> 2 [3 l <br /> pH(units)(field) 7.84 6.2- 7.63 8 3 7.74 6.3- 7.68 8 1 None <br /> Turbidity NTU)(field) 6.7 110 11.4 17[21 10.3 68 12.8 J21 Increasing <br /> Total Dissolved Solids 260 _[21 210 350 480[3 630 270 330 None <br /> Chloride 9.7 21 14 24[2] 120[3] 122 24 27[2] Increasing <br /> Volatile Organic Compounds(uo/L) <br /> Tetrachloroethene ND detect ND detect ND detect 1.3 detect Increasing <br /> easing <br /> 1,2-Dichloro ro ane ND detect ND detect ND detect 0.50* detect Increasing <br /> Dichlorodifluoromethane ND detect ND detect ND detect 3.6- detect None <br /> All Other Compounds ND detect ND detect ND detect ND detect None <br /> NR Not Required <br /> ND= Not Detected <br /> NE=Not Established <br /> [1]Not established due to>50%non-detects <br /> [2]Not established due to statistically significant increasing trend. Concentration limits from WDRs. <br /> [3]Not a compliance parameter per MRP Section E-4 <br /> *=Trace concentration(estimated value) <br /> {}=Parameters also detected in one or more of the quality control blanks <br /> Underlined values indicate a concentration limit exceedance. Bolded values indicate a detected organic compound <br /> Harney Lane Sanitary Landfill Department of Public Works/Solid Waste <br /> 1 Quarter 2007 Groundwater Monitoring Report County of San Joaquin—April 15,2007 <br />