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Hit3TORICAL SUMMARY OF ANALYTICAL RESULTS <br /> GROUNDWATER <br /> FOOTHILL SANITARY LANDFILL <br /> MW-3 <br /> Units:mg/1,unless noted <br /> Sample Designation MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 MW-3 <br /> Sam IIng Date 4/1/99 7/7/9910/20/99 3/8/00 5/11/00 7/13/00 10/9/00 1/15/01 4/30/01 8/2/01 10/29/01. 2/6/02 4/30/02 8/1/0210/14/02 1/29/03 5/30/03 <br /> Monitoring and Field Paramotors <br /> General Water Quality Parameters <br /> Chloride _--- _--13 7.1 9.61 - -9.7 9.73 9 6 -9.96 - 12 _9.76 --- 9- 11 - 10 11 11 NM <br /> Nitrate-Nitrogen 4.1 2.9 3.5 3.21 3.45 .3.36 - 3.5 3.64 3.48 3 3.5 4 3 5 3 8 3 2 3.8 NM <br /> Total Dissolved Solids . 179 213- 220 202 04 188 196 191 199- 20 <br /> _ 200 220 190 0 190 210 190- NM <br /> Sulfate - 5.1 - 1-.9- -_6.57 _7_.24 --6.98 --.. 7.62 7.19 7 66 7.00 6.9 8.8 10 6.4 _6.7- _ 6.2 7 NM <br /> --pH(std units)(field) <br /> -1-.7 7 7.41 7.9 7.36 7.8 8.23 7.41 7.01 6.6 7.11 6.36 6.8 6.94 7.06 6.72-� 6.69 <br /> Electra I Conductivity(umhos/cm 268 271 270 264 273 272 272 316 600 190 610 210 290 300 250 377 27 <br /> Turbidity(NTU)(field) 1 3 1.01 >200 3.3 0.33 0.55 0.21 2.35 12.1 7.2 17.1 6.3 3.7 3.7 6.7 3.1 <br /> Temperature °C (field? _- 19.3 24.6 21.5 17.3 20.5 21.7 - 20 _ 23.7 _ 19.3 20.8 19.1 16.9 18.8 20.6 20.3 _1N.M_1_ 2 21 <br /> Calcium _-_._______-_�_..-__-_-_-NM._---- <br /> .-2.9 <br /> Potassium ----- ---- ------------------ ___-_ - - ---NM 15 <br /> Sodium _ NM <br /> Volatile Organic Compounds(ug/I _ ---- <br /> _Methylene Chloride <0.03 2.43 <0.03 <0 06 <0.06 <0.06 <0.06 <O.Q6 <0.06 1.9 <0.06 <0.06 <0.3 <0.23 NM <br /> -- - <br /> Trichloroethene(TCE) <0.89 <0.89 <0.06 0.227 0.652 0.285' 0.323'_ 0.717 0.435'_0.06 0 097 <0.18 <0.06 <0.06 <0.2 <0.36 NM <br /> -- <br /> 1,1-Dichloroethene <0.72 <0.72 <0.04 <0.04 0.285 0_.0795° 0.0688' 0.316' 0.217 <0.06 <0.06 <0.12 <0.06 <0.06 <0.2<0.2- NM <br /> <0.07 <0.07 <0.07 <0.07 ZRO <C1 <0.07 <0,07 <0.3 <0.37 NM <br /> <0.83 <0.83 <0.06 <0.07 <0.06 <0.07 <0.07 <0.16 _ <0.07 0.07 _ <br /> Chloroform <0.07 <0.07 <0,07 <0.07 <0.07 < <0,2 <0.32 NM <br /> <0.90 <0.07 <0.07 <0.07 <18 <0.52 <br /> Acetone enzene -r�°p <1.79 <1.79 <1.79 <1.79 <1.8 4,4 <1.8 <1.8 <2.0 <0.9 <br /> <0.1 <0.1 <0.1 <0.1 <0.1 0.46 <0.1 <0.10 <0.3 <br /> Napthalene - - <0'1 < <0 08 < <0.08 1.4 <0.3 <br /> 0.08 <0.08 <0.18 0.08 <br /> Methyl ter-butyl ether - - - <0.07 < <OA7 <0.16. <0.07 <0.07 <0.2 <0.32 _ <br /> Toluene 0.07 < <0.46 NM <br /> 1,4-Dichlorobenzene 0.18* <0. <0.23 <0. <0.11 <0.3 <0.44 NM <br /> 0.086 <0.00 8 <0.22 <0.00 8 0.08 0. <br /> Tetrachloroethene <0.70 <0.65 <0.70 <0.70 12.0 <0.14 NM <br /> 2-Butanone <0.20 <0.09 <0.09 <0.2 <0.40 N <br /> 1,3-Dichloropropane <0.14 <0.3 <0.18 <br /> _Chloromethane .. <br /> 1 2 4 Trimethylbenzene -N M <br /> 1 3 5-Trimethylbenzene <br /> Constituents of Concern Parameters <br /> Semivolatile Organic Compounds <br /> EPA Method 3520/8270 <br /> AII Compounds NR NR ND NR NR NR NR NR NR NR NR <br /> NR NR NR NR NR NR <br /> Organochlorine Pesticides and Polychlorinated Blnhenyl's <br /> (EPA Method 3510/8080) NR NR NR NR NR NR <br /> _ <br /> All Compounds NR NR ND NR NR NR NR NR NR.. _ NR NR <br /> "Trace 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 /> 19 of 24 <br /> MW-3;Printed:7/8/03 <br />