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~ Table 6. Concentrations and relative percent differences for pesticides detected in replicate samples-Continued <br />[µg/L, microgram per liter; <, less than; nc, not computed; GC/MS, gas chromatography/mass spectrometry; HPLC, high-performance liquid chromatography] <br />m <br />y <br /> <br />Pesticide Concentration <br />in replicates <br />(µg/L) Relative <br />percent <br />difference <br />Pesticide Concentration <br />in replicates <br />(µg/L) Relative <br />percent <br />difference <br />Pesticide Concentration <br />in replicates <br />(µg/L) Relative <br />percent <br />difference <br />Benfluralin 0.004 0.0 Carbofuran 0.007 Carbofuran 0.570 <br />(continued) 0.004 (GC/MS) 0.007 (HPLC) 0.480 <br /> (continued) 0.007 0.0 (continued) 0.560 1.8 - 19 <br /> 0.004 0.0 0.007 0.470 <br /> 0.004 <br /> 0.982 <br /> 0.978 <br /> 0.986 0.41 - 3.4 Chlorpyrifos 0.004 <br /> 0 <br />953 0.004 <br />Bromoxynil <0.035 . 0.004 0.0 - 22 <br /> 0.070 0 <br />005 <br /> 0.040 nc 0.784 . <br /> <0.035 0.809 <br /> 0.770 0.37 - 4.9 0.013 7.4 <br /> 0.806 0.014 <br />Carbaryl 0.006 15 0.009 12 0.006 0.0 <br />(GC/MS) 0.007 0.008 0.006 <br /> 0.003 0.0 0.005 <br /> 0.003 0.005 <br /> Carbofuran 0.470 41 0.006 0.0 - 18 <br /> (HPLC) 0.310 0.005 <br />Carbofuran 0.009 0.0 0.620 <br />(GC/MS) 0.009 0.600 <br /> 0.580 1.6 - 8.3 Cyanazine 0.004 <br /> 0.630 0.005 <br /> 0.480 1.0 0.005 0.0 - 22 <br /> 0.485 <br />0.004 <br />