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M M M= M M= M® w of r M r r M s <br />HISTORICAL SUMMARY OF ANALYTICA <br />GROUNDWATER <br />NORTH COUNTY SANITARY LANDFILL <br />G -2/G -2A <br />Units: mg/l, unless noted <br />Sample Designation G-2 G-2 G-2 G-2 G-2 G-2 G-2 G-2 G-2 G-2 G-2 G-2 G -2A <br />Sampling Date 10/5/93 1/4/94 4/8/94 7/1/94 12/1/94 1/3/95 4/3/95 7/7/95 10/2/95 1/2/96 4/5/96 7/10/96 1/28/14 <br />Monitoring and Field Parameters <br />3- Nitroaniline NR NR NR NR ND NR NR NR NR ND NR NR NR <br />Napthalene <br />All Compounds <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />ND <br />Organochlorine Pesticides and Polychlorinate <br />delta -BHC <br />NR <br />NR <br />NR <br />NR <br />ND <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />All Compounds <br />NR <br />NR <br />NR <br />NR <br />ND <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Chlorinated Herbicides (uvA) <br />2,4-D <br />NR <br />NR <br />NR <br />NR <br /><1.0 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />2,4,5 -TP (Silvex) <br />NR <br />NR <br />NR <br />NR <br /><0.2 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />All Compounds <br />Metals <br />Aluminum, Dissolved <br /><0.05 <br />NR <br />NR <br />NR <br />0.256 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Antimony, Dissolved <br /><0.05 <br />NR <br />NR <br />NR <br /><0.017 <br />NR <br />NR <br />NR <br />NR_ <br />NR <br />NR <br />NR <br />NR <br />Arsenic, Dissolved <br /><0.005 <br />NR <br />NR <br />NR <br />trace <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Barium, Dissolved <br />0.045 <br />NR <br />NR <br />NR <br />0.041 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Beryllium, Dissolved <br />NR <br />NR <br />NR <br />NR <br />trace <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Boron, Dissolved <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Cadmium, Dissolved <br /><0.003 <br />NR <br />NR <br />NR <br /><0.002 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Chromium, Total Dissolved <br /><0.005 <br />NR <br />NR <br />NR <br />0.0007 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />_ <br />Chromium Hexavalent <br /><0.010 <br />NR <br />NR <br />NR <br /><0.01 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Cobalt, Dissolved <br />NR <br />NR <br />NR <br />NR <br /><0.003 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Copper, Dissolved <br /><0.01 <br />NR <br />NR <br />NR <br /><0.004 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Iron, Dissolved <br /><0.02 <br />0.123 <br /><0.02 <br />0.02 <br />0.304 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Lead, Dissolved <br /><0.002 <br />NR <br />NR <br />NR <br />trace <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Manganese, Dissolved <br /><0.005 <br />NR <br />NR <br />NR <br />0.012 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Mercury, Dissolved <br /><0.0005 <br />NR <br />NR <br />NR <br /><0.0001 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Nickel, Dissolved <br /><0.02 <br />NR <br />NR <br />NR <br /><0.007 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Selenium, Dissolved <br /><0.005 <br />NR <br />NR <br />NR <br />trace <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Silver, Dissolved <br /><0.01 <br />NR <br />NR <br />NR <br /><0.001 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Thallium, Dissolved <br /><0.005 <br />NR <br />NR <br />NR <br /><0.001 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Tin, Dissolved <br />NR <br />NR <br />NR <br />NR <br /><0.001 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Vanadium, Dissolved <br />NR <br />NR <br />NR <br />NR <br />0.02 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Zinc, Dissolved <br /><0.01 <br />NR <br />NR <br />NR <br />0.014 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR = Not Required <br />NT = Not Tested <br />* = Trace Concentration <br />[1] pH meter was not functioning properly. Thi; <br />