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HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br /> GROUNDWATER <br /> FOOTHILL SANITARY LANDFILL <br /> MW-1 <br /> Units:mg/l,unless noted <br /> sample Designation - - - - - - - -1 <br /> Sampling Date 7/10/89 10/20/89 1/18/90 4/5/90 7/12/90 10/2/90 1/14/91 4/3/91 7/18/91 10/10/91 1/10/92 4/3/92 7/1/92 10/2/92 1/5/93 7/1/93 10/4/93 <br /> Monitoring and Field Parameters <br /> General Water Qualt Parameters <br /> em erature ie NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR <br /> Donde 11 7.1 6 6.9 6.5 5.7 6.4 6.8 6.7 6.4 NR 13 6 6 6 6 5 <br /> urate-Nitrogen .1 2.5 2.5 .6 NR NR N 2.4 3.4 2.5 2.5 2. 4 <br /> Tota Dissolved Solids 151 180 177 1 [9 ] 181 165 197 91 210 180 220 0 200 <br /> Sulfate 7-2. 3 �6.3 6.7 <8 <8 7 7 7 6 6 <br /> pH(std.units)(field) .19 NR NR NR NR NR NR NR NR 7.56 7.35 7.50 7.66 8.02 7.46 6.79 <br /> Electrical concluctivi!Xum os cm 291 284 NR NR NR NR NR NR NR NR 271 244 248 307 300 301 248 <br /> ur i ie 1 N NR NR N <br /> alcium <br /> Potassium <br /> Magnesium <br /> Sodium <br /> Volatile Or anic Com ounds u /I _ <br /> V" <br /> oroethene Q <br /> 1, - ichloroet ene <br /> Chloroform <br /> Benzene <br /> m p- y ene <br /> Qh oro enzene <br /> Met= <br /> et y eneChloride <br /> Acetone <br /> apt a ene <br /> Methyl ter-butyl ether <br /> Toluene <br /> I4-Dichlorobenzene <br /> etrac oroethene <br /> utanone <br /> is oropropane <br /> Chloromet ane <br /> 2,4-Tnmet y enzene _ <br /> 1,3;5-Trimet yibenzene <br /> Constituents of Concern Parameters <br /> Semivolatile.Organic Comoounds <br /> (EPA Method 3520/8270) <br /> DCII compounds NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR <br /> Organochlorine Pesticides and Polychlorinated Biohenvl's <br /> (EPA Method 3510/8080) <br /> All Compounds NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR N --NFZ- <br /> = <br /> Trace Concentration <br /> [1]This analytical result appears to be anomalous and therefore was not used in statistical evaluation procedures. <br /> {1)Parameter also detected in one or more quality control blanks <br /> ND=Not Detected <br /> NM=Not Measured <br /> NR=Not Required <br /> MW-1;Printed:7/26/2004 1 of 28 <br />