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® TABLE 6-Continued <br /> LEACHATE MONITORING SUMMARY <br /> FIRST SEMESTER 2013 <br /> NORTH COUNTY RECYCLING CENTER AND SANITARY LANDFILL <br /> (Units mg/l unless noted) <br /> L-1 L-3 L-4 <br /> Sampling Designation Area 1 sum Area 3 sum Area 4 sum <br /> Sampling Date 1/23/13 1/23/13 1/23/13 <br /> Volatile Organic Compounds (ug/L)-Continued <br /> Methyl t-butyl ether 3.1 19 29 <br /> Naphthalene 19 5.7 13 <br /> n-Propylbenzene 0.22* 0.12* 0.31* <br /> Toluene 1.5 7.8 2.5 <br /> Trichloroethene 0.30* 0.21* 0.18* <br /> 1,2,4-Trimethylbenzene 7.1 1.1 1.3 <br /> 1,3,5-Trimethylbenzene 2.3 0.36* 0.61 <br /> Vinyl chloride 3.2 0.50 6.2 <br /> Total Xylenes 27 13 19 <br /> Acetone ND 21,000 ND <br /> 2-Hexanone ND 590 ND <br /> Methyl ethyl ketone ND 8,300 ND <br /> ® Methyl isobutyl ketone ND 71 ND <br /> ND = Not Detected <br /> NM = Not Measured <br /> *= Trace Concentration (estimated value) <br /> {1)= Parameter found in one or more quality control blank. <br /> North County RC&SL Public Works/Solid Waste <br /> 1 n Semester 2013 Groundwater Monitoring 18 County of San Joaquin—July 25,2013 <br />