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n <br />11 <br />TABLE 2 <br />Foothill Sanitary Landfill <br />First Semester 2005 Groundwater Monitoring Results <br />Units ma/I unless noted <br />Sampling Designation <br />MW -1 <br />MW -2R <br />LW -1 <br />MW -3 <br />Conc. <br />Sampling Date <br />02/02/05 <br />02/02/05 <br />02/02/05 <br />02/02/05 <br />Limit <br />Monitoring and Field Parameters <br />Elevations <br />Top of Casing Elevation (ft) <br />256.25 <br />296.24 <br />317.35 <br />NR <br />Depth to Groundwater (ft) <br />205.74 <br />254.51 <br />�:,�� NR" <br />271.46 <br />NR <br />Groundwater Elevation (ft) <br />50.51 <br />41.73 <br />45.89 <br />NR <br />General Water Quality Parameters <br />Temperature (°C) (field) <br />18.1 <br />18.8 <br />16.1;- <br />16.9 <br />NR <br />Chloride <br />5 <br />2 <br />10 <br />9.6 <br />Nitrate - Nitrogen <br />2.4 <br />2.6 <br />1,..1 ;;. <br />3.2 <br />3.3 <br />Total Dissolved Solids <br />130 <br />150 <br />190 <br />240 <br />Sulfate <br />4 <br />2 <br />6 <br />8.7 <br />pH (units) (field) <br />7.14 <br />7.14 <br />� 7 03 -' <br />6.88 <br />6.3-8.9 <br />Electrical Conductivity (NS/cm) (field) <br />246 <br />221 <br />212 <br />290 <br />466' <br />Turbidity (NTU) (field) <br />14.9 <br />9.8 <br />.4:7 <br />10.6 <br />45' <br />Calcium <br />15.9 <br />16 <br />21.6 <br />23' <br />Potassium <br />2.6 <br />4.1 <br />4 <br />4 <br />7.6' <br />Magnesium <br />7.8 <br />7.7 <br />9.8� <br />11.4 <br />13' <br />Sodium <br />8.5 <br />13.21: <br />17.2 <br />15' <br />Alkalinity, Carbonate <br />ND <br />ND <br />. ND-, <br />ND <br />0.808 <br />Alkalinity, Bicarbonate <br />77 <br />85 <br />�, 100 Il:" <br />110 <br />120 <br />Cyanide <br />NR <br />NR <br />NR <br />NR <br />TBD <br />Sulfide <br />NR <br />NR <br />NR NR <br />0.5 <br />Volatile Organic Compounds (ug/L) <br />Acetone <br />ND <br />(3.7*) <br />ND <br />(3.4*) <br />detect <br />Chloromethane <br />ND <br />(0.28*) <br />ND <br />(0.28*) <br />detect <br />All Other Compounds <br />ND <br />NDND. <br />r <br />ND <br />detect <br />Semi -Volatile Organic Compounds WWI-) <br />NR <br />NR <br />NR <br />982 <br />detect <br />Bis(2-ethylhexyl)phthalate <br />' Concentration Limit established using statistical analysis <br />2 Compound was reported 7-22-04 and retested this semester <br />TBD = To be determined when enough data is collected for statistical analysis <br />ND = Not detected <br />NR = Not required <br />NE = Not established due to insufficient data <br />(X) Parameter also detected in one or more quality control blanks <br />* Trace concentration (estimated value) <br />LW -1 sampling'/testing Is not parf of monitoring program' <br />Foothill Sanitary Landfill <br />1 sr Semester 2005 Groundwater Monitoring <br />Department of Public Works/Solid Waste <br />County of San Joaquin - July 29, 2005 <br />