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® MSTORMWMMANNANALOW RESMW ® M M ® ® m m GROUNDWATER FOOTHILL SANITARY LANDFILL Units:mg/l,unless noted 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 MW-3 MW-3 MW-3 Sampling Date 1/16/95 4/20/95 7/6/95 10/11/95 1/4/96 4/2/96 7/9/96 10/2/96 1/16/97 4/10/97 7/10/97 10/3/97 3/11/98 4/30/98 7/7/98 10/9/98 1/15/99 4/1/99 7/7/99 10/20/99 Monitoring and Field Parameters General Water Ouality Parameters Temperature(°C)(field) 18.1 14 21.5 22.5 18.4 20.8 22.5 21.3 17.1 25.3 24 22.2 20.17 21.8 23.8 20.6 17.7 19.3 24.6 21.5 Chloride -- - 10 7.1 _.- 9 9 9 9 9 9 7.3 7.5 7 8.7 Il I I 10 10 10? .13.. 7.1 261 Nitrate-Nitrogen 3.6 3.1 3.7 3.5 3.3 3.9 3.3 4.1 3 3.6 2.6 3.3 3.9 4.2 4? 4.2 0.23 4.1 2.9 3.5 Total Dissolved Solids 230 180 179 260 250 250 230 230 230 178 220 246 216 215 229 198 173 179 213 220 Sulfate ._, (28] 2.3 - 5 6 6 5 6 6 4.9 4.5 5 5.5 6 6.) 62 6 6.8 _ 5.1 1.9 6.57 pH(std.units)(field) 7.74 7.19 7.80 7.62 7.81 7.48 7.49 7.34 8.68 7 7.08 7.8 7.81 7.72 8.18 T5 8.28 7.77 7.41 -- 7.9 Electrical Conductivity(mnhos/cm)(field) 304 284 295 286 294 277 289 275 460 238 266 267 242 277.3 271 264 272 268 271 _ 270 Turbidity(NTU)(field) 100.6 10.7 136 - 68 42 120.3 - 58.0 65.1 2.3 11 1.98 19.38 0.8 18.7 25 15.1 LOW 1.3 1.01 >200 Calcium ------ --- - -- -. __ _.... Potassium Magnesium -- - -- - Sodium Volatile Orhanic Compounds(ue/I) _.---- -... --------------_ .._ - -- - - - Ttichlotoethene(TCE) 0.9 <0.43 <0 4 <0 4 0.5* <0 4 <0.4 0.7* <0.5 0.86 <0.4 <0.89 <0.89 <0.89 <0.89 <0.89 4.0 <0.89 <0.89 <0.06 1 I-Dichloroe_thene _ <0.4 <0.4 <0.4 0.29* <0.4 <0.72 <0.72 <0.72 <0.72 <0.72 4.0 <0.72 <0.72 <0.04 Chloroform <0.83- <0.83 <0.83 <0.83 2.6* <0.83 <0.83 <0.83 <0.83 <0.83 <0.83 <0.83 <0.83 <0.06 Benzene 4.2 <1.0 <1.0 <0.04 in/p-Xylene 1.5* <0.78 <0.78 <0.21 Chlorobenzene - 4.0- - <0.90 <0.07 Methylene Chloride ----- ----- -----_._----- -__-- _ _. - - - -- <0.03 Acetone ----- ..._-- -----.._- Napthalene -. __. _--_-_ __-_-_ --._ -.------ -_.-- -------------.__ -... - Methyl ter-butyl ether Toluene 4.1 1,4-Dichlorobenzene Teuachlomethene 2-Butanone 1,3-Dichloropropane Chloromethane Chloroethane Carbon disulfide 1,2,4-Trimethylbenzene 1,3,5-Trnnethylbenzene Constituents of Concern Parameters Semivolatile Organic Compounds (EPA Method 3520/8270) B i s(2-ethylhexy I)phthal ate All Compounds NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR ND Organochlorine Pesticides and Polychlorinated Biphenyl's (EPA Method 3510/8080) All Compounds NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR NR ND * -Trace Concentration [I]This analytical result appears to be anomalous and therefore was not used in statistical evaluation procedures. 1;Parameter also detected in one or more quality control blanks ND=Not Detected NM=Not Measured NR=Not Required n:\consulting\data\shared\projects\xls\qmr\79\791289\FH-Hist.x Is