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QC Sample Results <br /> Client: Conestoga-Rovers&Associates, Inc. TestAmerica Job ID:440-66282-1 <br /> Project/Site:4315 Waterloo Rd.,Stockton, CA <br /> Method: 8270C LL-Semivolatile p <br /> Organic Com ounds by GCMS -Low Levels (Continued) <br /> Lab Sample ID: LCS 440-153726/2-A Client Sample ID:Lab Control Sample �7 <br /> Matrix:Water Prep Type:Total/NA 4i <br /> Analysis Batch:154551 Prep Batch:153726 a <br /> LCS LCS <br /> Surrogate %Recovery Qualifier Limits <br /> • <br /> Terphenyl-d14(Surr) 90 37-144 <br /> Lab Sample ID:LCSD 440-153726/3-A Client Sample ID:Lab Control Sample Dup <br /> Matrix:Water Prep Type:Total/NA <br /> Analysis Batch:154551 Prep Batch:153726 • <br /> Spike LCSD LCSD - °/Rec. RPD <br /> Analyte Added Result Qualifier Unit D %Rec Limits RPD Limit <br /> 1,2,4-Trichlorobenzene 10.0 7.45 ug/L 74 44-120 6 20 <br /> 1,2-Dichlorobenzene 10.0 7.38 ug/L 74 43-120 5 25 <br /> 1,2-Diphenylhydrazine(as 10.0 9.55 ug/L 95 59-124 4 25 RA <br /> Azobenzene) <br /> 1,3-Dichlorobenzene 10.0: 6.97 u /L 70 41-120 5 25 <br /> 1,4-Dichlorobenzene 10.0 7.09 ug/L 71 41-120 4 25 <br /> 2,4,5-Trichlorophenol 10.0 9.38 ug/L 94 20-138 9 30 <br /> 2,4,6-Trichlorophenol 10.0 9.32 ug/L 93 20.139 5 30 <br /> 2,4-Dichlorophenol 10.0 8.92 ug/L 89 21-132 3 20 <br /> 2,4-Dimethylphenol 10.0 8.81 ug/L 88 51-120 3 25 <br /> _... ...._..-. ........ ... ........ .._... _.._........._........_..... --_.......... ...- --...._...._..._..- <br /> 2,4-Dinitrophenol 10.0 7.21 ug/L 72 20.134 2 25 <br /> 2,4-Dinitrotoluene 10.0 9.63 ug/L 96 54-121 6 20 <br /> 2,6-Dinitrotoluene 10.0 9.59 ug/L 96 54-121 4 20 <br /> - napht ........... ... ... .....- -- --- <br /> --- -- -- -- -- <br /> - <br /> 2-Chloronaphthalene 10.0 9.11 ug/L 91 54-120 3 20 <br /> 2-Chlorophenol 10.0 8.04 ug/L 86 20-122 1 25 <br /> 2-Methylnaphthalene 10.0 8.69 ug/L 87 55-120 5 20 <br /> 2-Methylphenol 10.0 8.11 ug/L 81 47-120 2 20 <br /> 2-Nitroaniline 10.0 9.20 ug/L 92 46-126 6 20 <br /> 2-Nitrophenol 10.0 8.73 ug/L 87 21-132 6 25 <br /> .................... .......... _ -- --- ---..__...._.--.. <br /> 3,3'-Dichlorobenzidine 10.0 6.10 u 9/L 61 25-135 15 25 <br /> 3-Nitroaniline 10.0 9.15 ug/L 91 42-122 8 25 <br /> 4,6-Di nitro-2-methyl phenol 10.0 8.41 ug/L 84 22-147 5 25 <br /> 4-Bromopheny1 phenyl ether 10.0 9.66 ug/L 97 58---1-20 3 25 <br /> 4-Chloro-3-methylphenol 10.0 9.70 ug/L 97 46.123 3 25 <br /> 4-Chloroaniline 10.0 8.74 ug/L 87 52-120 6 25 <br /> ................. .... ... <br /> 4-Chlorophenyl phenyl ether 10.0 9.12 ug/L 91 50.122 5 20 <br /> 3-Methylphenol+4-Meth,ylphenol 10.0 8.94 ug/L 89 50-120 2 20 <br /> 4-Nitroaniline 10.0 8.92 ug/L 89 46-126 4 20 <br /> 4-Nitrophenol 10.0 7.78 ug/L 78 20-151 7 30 <br /> Acenaphthene 10.0 9.43 ug/L 94 57-120 4 20 <br /> Acenaphthylene 10.0 9.56 ug/L 96 60_120 5 20 <br /> Aniline <br /> --- <br /> .------ 10.0 ND .U.u ..;. --- - <br /> /L 89 53_120 3 30 <br /> Anthracene 10.0 10.7 ug/L 107 62-120 5 20 <br /> Benzidine 10.0 ND ug/L 30 - 20.168 10 35 <br /> Benzo[a]anthracene 10.0 10.9 ug/L 109 u'_120 .10 20 <br /> Benzo[a]pyrene 10.0 9.05 ug/L 91. 58-103 8 25 <br /> Benzo[b]fluoranthene 10.0 9.69 ug/L 97 46-125 4 25 <br /> Benzo[g,h,i]perylene 10.0 9.95 ug/L 99 52-136 13 25 <br /> Benzo[k]fluoranthene .10.0 9.68 ug/L 97 61-127 4 .20 <br /> Benzoic acid 10.0 10.4 ug/L 104 20-120 13 30 <br /> Benzyl alcohol 10.0 9.94 ug/L 99 50---12-0- 0 20 <br /> TestAmerica Irvine <br /> Page 22 of 36 1/13/2014 <br />