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M ® ® ® M M M M ® M ® M M M ® M M ® M <br />HISTORICAL SUMMARY OF ANALYTICA <br />GROUNDWATER <br />NORTH COUNTY SANITARY LANDFILL <br />G-1 <br />Units: mg/l, unless noted <br />Snmple Designation <br />Sam lin Date <br />Monitoring and Field Parameters <br />Semivolatile Organic Compounds NO) <br />All Compounds <br />G -I <br />11/03/94 <br />NR <br />G -I <br />04/04/94 <br />NR <br />G-1 <br />07/01/94 <br />NR <br />G -I <br />12/01/94 <br />ND <br />G-1 <br />01/03/95 <br />NR <br />G -I <br />04/03/95 <br />NR <br />G-1 <br />07/07/95 <br />ND <br />G-1 <br />10/02/95 <br />NR <br />G-1 <br />01/02/96 <br />NR <br />G -I <br />04/05/96 <br />NR <br />G-1 <br />07/11/96 <br />NR <br />G -I <br />10/03/96 <br />NR <br />G-1 <br />01/16/97 <br />NR <br />G-1 <br />04/09/97 <br />NR <br />G-1 <br />07/10/97 <br />NR <br />G-1 <br />10/01/97 <br />NR <br />G -I <br />01/28/98 <br />NR <br />G -I <br />04/16/98 <br />NR <br />G-1 <br />07/10/98 <br />NR <br />G-1 <br />10/05/98 <br />NR <br />G-1 <br />01/08/99 <br />NR <br />- <br />04/26/99 <br />NR <br />_Organochlorine Pesticide_ and Polvchlorinatei <br />NR <br />ND <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 />NR <br />NR <br />NR <br />NR <br />NR <br />All Compounds <br />NR <br />NR <br />_ <br />Chlorinated Herbicides tua1l) <br />NR <br />NR <br />NO <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 />NR <br />NR <br />NR <br />NR <br />NR <br />All Compounds <br />NR <br />MetlsNR <br />a <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Aluminum, Dissolved <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Antimony, 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 />NR <br />NR <br />NR <br />NR <br />Arsenic, Dissolved <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Barium, Dissolved <br />NR <br />NR <br />NR <br />0.045 <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 />NR <br />NR <br />NR <br />Beryllium, Dissolved <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 />NR <br />NR <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Cadmium, Dissolved <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Chromium, Total Dissolved <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Chromium Hvalent <br />exa <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 />NR <br />NR <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 /><0.003 <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 />NR <br />NR <br />NR <br />NR <br />Copper, Dissolved <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Iron, Dissolved <br /><0.02 <br /><0.02 <br />0.03 <br /><0.02 <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 />NR <br />NR <br />NR <br />NR <br />Lead, Dissolved <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Manganese, Dissolved <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Mercury, Dissolved <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Nickel, Dissolved <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Selenium, Dissolved <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Silver, Dissolved <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 />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Thallium, Dissolved <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 />NR <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 />trace <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 />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 />0.018 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />. <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />Zinc, Dissolved <br />NR <br />NR <br />NR <br />0.011 <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR <br />NR = Not Required <br />NT — Not Tested <br />NS = Not Sampled due to lack of water <br />* = Trace Concentration <br />( I I This data point appears anomalous and there) <br />1 Parameter also detected in one or more qualn <br />