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r ris r �r r rr rr rr w <br /> ' HISTORICAL SUMMARY OF ANALYTICAL RESULTS <br /> GROUNDWATER <br /> FOOTHILL SANITARY LANDFILL <br /> MW-1 <br /> Units:mg/l,unless noted <br /> Sample Designation - <br /> Sampling Date 10/14/02 1/29/03 5/30/03 8/13/03 <br /> Monitoring and Field Parameters <br /> General Wateruali Parameters <br /> Tem erature C field 20.4 16 23.8 21.6 <br /> Chloride 9.2 6.7 NM 6.4 <br /> Nitrate-N=o <br /> itro en 3.2 3.2 NM 3.3 <br /> otal D�ssoivedSolids 360 180 NM 170 <br /> Sulfate 5.8 6.5 NM 6.3 <br /> std.units laid 6.74 6.7 7.81 7.42 <br /> Electricalonductiwty(umhos/cm) 250 379 234 208 <br /> _TurT�J)(field) 6-9 2.9 0.7 12s <br /> b�dy� --- ----- <br /> calcium <br /> NM 19 19 - <br /> Potassium NM 3.3 <0.92 <br /> Ma neswm NM 9.8 9.7 <br /> Sodium NM 11 11 <br /> volatile Organic Compounds(uo/I) ------.- <br /> Trichloroethene TCE <0.2 <0.36 NM <0.36 <br /> - c orae ane <br /> <0.2 <br /> oro orm < < < . <br /> Dig- <br /> Benzene < • 0 < • < - <br /> m -.Y ens <0.20 -Nivi <br /> -Ch orobenzene- <0.2-. <0.32 NM <0.32 _. <br /> <0.3 '<0.23 NM 0.24- <br /> _--Methyl®ne Chloride __-- -_--_-. { ? _ _ _____._._ _ -- ---____-- -.____.._ �-- <br /> Acetone <2.0 (2.5)-' NM (1.0-) --- --- <br /> a tha ene <0.3 <0.93 NM <0.93 <br /> -11Aethy tert-buty at er 5.3 <0.36 NM <0.36 <br /> Toluene <0.2 <6.32 NM <0.32 <br /> 1,4-Dichoro enzene <0.2 <0.46 NM <0.46 <br /> etrac oroet ane _ <0.3 <0.� ISM <0.44 <br /> --_- - <br /> 2-8utanone <2.0<0.14--TJM <0.14 <br /> 1,3-Dic-liloro ro ane <0.2 <0.40 NM <0.40 <br /> hloromethane <0 3 <0 18 NM (0.19') <br /> 1 2 4-Trimethylbenzene NM <0.18 <br /> 1 3 5-Tnmethylbenzene NM <0.28 <br /> Constituents of Concern Parameters <br /> Semivolatile Organic Compounds <br /> EPA Method 3520/8270 <br /> All om ounds NR NR NR NR <br /> Organochlorine Pesticides and Polychlorinated Biphenvl's <br /> (EPA Method 3510/8080) <br /> All Compounds NR NR NR NR <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:1/30/2004 7 of 28 <br />