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M r ® M M M = M = ® ® w ® = ■w ® ■w = <br />HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br />GROUNDWATER <br />FOOTHILL SANITARY LANAFILL <br />MW -4 <br />Units: mg/l, unless noted <br />Sample Designation <br />Sampling Date <br />MW -4 <br />7/23/07 <br />MW -4 <br />2/5/08 <br />MW4 <br />7/30/08 <br />MW -4 <br />1/15/09 <br />MW -4 <br />8/18/09 <br />MW -4 <br />10/8/09 <br />MW -4 <br />11/2/09 <br />MW -4 <br />2/4/10 <br />MW4 <br />5/26/10 <br />1%4W-4 <br />9/2/10 <br />MW4 <br />1/26/11 <br />MW -4 <br />8/9/11 <br />MW -4 <br />1/11/12 <br />MW -4 <br />7/24/12 <br />MW4 <br />2/5/13 <br />MW4 <br />7/31/13 <br />MW4 <br />1/21/14 <br />Constituents of Concern Parameters <br />Semivolatile Organic Compounds (EPA Method 3520/8270) <br />Di -n -butyl Phthalate <br />{0.0023*} <br />NA <br />NA <br />NA <br />ND <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />4-Chloro-3-methylphenol <br />NA <br />NA <br />NA <br />NA <br />5.3 <br />NA <br /><0.4 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />2 -Chlorophenol <br />NA <br />NA <br />NA <br />NA <br />6.5 <br />NA <br /><0.37 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />2-Methylphenol <br />NA <br />NA <br />NA <br />NA <br />6.1 <br />NA <br /><1.0 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />3-&4-Methylphenol <br />NA <br />NA <br />NA <br />NA <br />12 <br />NA <br /><1.6 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NANA <br />NA <br />NA <br />NA <br />4-Nitrophenol <br />NA <br />NA <br />NA <br />NA <br />7.2 <br />NA <br /><0.73 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Pentachlorophenol <br />NA <br />NA <br />NA <br />NA <br />5.0" <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Phenol <br />NA <br />NA <br />NA <br />NA <br />4.7 <br />NA <br /><0.20 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />2,4,6 -Trichlorophenol <br />NA <br />NA <br />NA <br />NA <br />2 <br />NA <br /><0.60 <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />All Compounds <br />NA <br />NA <br />NA <br />NA <br />ND <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Organochlorine Pesticides and Polychlorinated Biphen <br />(EPA Method 3510/8080) <br />All Compounds <br />NA <br />NA <br />NA <br />NA <br />ND <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />NA <br />Organophosphate Pesticides <br />(EPA Method 8141 A) <br />All Compounds NA NA NA NA ND <br />* = NA Concentration <br />[1 ] This analytical result appears to be anomalous aNA therefore was not used in statistical evaluation procedures <br />(I } Parameter also detected in one or more quality control blanks <br />NA = Not Available <br />ND NA NA NA NA NA NA NA NA NA NA NA <br />Constituents of Concern Parameters <br />Chlorinated Herbicides <br />(EPA Method 8150A Modified) <br />All Compounds NA NA NA NA ND NA NA NA NA NA NA NA NA NA NA NA NA <br />ChlorophenoU Herbicides <br />(EPA Method 8151 A) <br />All Compounds NA NA NA NA ND NA NA NA NA NA NA NA NA NA NA NA NA <br />