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i QC Sample Results Client: Conestoga-Rovers&Associates, Inc. TestArnerica Job ID:440-66282-1 Project/Site:4315 Waterloo Rd.,Stockton,CA Method: 8260B -Volatile Organic Compounds (GC/MS)(Continued) Lab Sample ID:440-66452-C-1 MSD Client Sample ID:Matrix Spike Duplicate Matrix:Water Prep Type:Total/NA � Analysis Batch: 154347 Sample Sample Spike MSD MSD %Rec. RPD Analyte Result Qualifier Added Result Qualifier Unit D %Rec Limits RPD Limit 1,1,1-Trichloroethane ND 25.0 31.7 ug/L 127 70_130 11 20 1,1,2,2-Tetrachloroethane ND 25.0 27.4 ug/L 110 63-130 3 30 ___ -- ------ .. --- ---- - ................. -- 1,1,2-Trichloroethane ND 25.0 27.5 ug/L 110 70-130 2 25 1,1-Dichloroethane 0.97 25.0 27.3 ug/L' 105 65-130 12 20 1,1-Dichloroethene .2.8 25.0 32.9 ug/L 120 70_130 9 20 _..."... .. ................. . ....... ... ... ... . ._...-- ..._ MMMT..,.-_...--- -..._. 1,1-Dichloropropene ND 25.0 30.8 ug/L - 123 64_130 3 20 1,2,3-Tdchlorobenzene ND 25.0 26.8 ug/L 107 60.140 4 20 1,2,3-Trichloropropane ND 25.0 27.0 ug/L 108 60.130 4 30 1,2,4-Trichlorobenzene ND 25.0 29.6 ug/L 119 60_140 5 20 rt1 �I 1,2,4-Trimethylbenzene ND 25.0 27.5 ug/L 110 70.130 2 25 `1 1,2-Dibromo-3-Chloropropane ND 25.0 26.7 ug/L 107 48-140 4 30 ?��} ( ) g �I IJ 1,2-Dibromoethane EDB ND 25.0 28.2 u /L 113 70_131 6 25 1,2-Dichlorobenzene ND 25.0 28.4 ug/L 114 70-130 2 20 1,2-Dichloroethane ND 25.0 29.7 ug/L 119 56-146............. ..... _... . - 1,2-Dichloropropane ND 25.0 27.9 ug/L 112 69-130 2 20 1,3-Dichlorobenzene ND 25.0 28.2 ug/L 113 70-130 4 20 1,3-Dichloropropane ND. 25.0 26.5 ug/L 106 70-130 3 25 . ......................... .. .. ...- -------------------- ...... ............ ......MMMT............ ... 1,4-Dichlorobenzene ND 25.0 28.1 ug/L 112 70-130 4 20 2,2-Dichloropropane ND 25.0 32.0 ug/L 128 69-138 16 25 i 2-Chlorotoluene ND 25.0 27.7 ug/L 111 70-130 6 20 4-Chlorotoluene ND 25.0 29.5 ug/L 118 70.130 4 20 Benzene ND 25.0 26.5 ug/L 106 66-130 6 20 Bromobenzene ND 25.0 28.5 ug/L 114 70-130 3 20 - ....... .............. -- --- ------ Bromochloromethane ND 25.0 27.2 ug/L 109 70.130 10 25 Bromodichloromethane ND 25:0 31.7 ug/L 127 70.138 3 20 Bromoform ND 25.0 30.3 ug/L 121 59_150 -4 25 ......................... :...MMMT.-"---._:..-..:..-- - ._.._..._:.........._........_..... ....."..._"... ..._.... _.._... ..__.. Bromomethane ND 25.0 31.6 ug/L. 126 62_13.1 9 25 Carbon tetrachloride ND 25.0 36.8 - ug/L 147 60-150 7 25 Chlorobenzene ND 25.0 26.8 ug/L 107 70-130 4 20 Chloroethane ND 25.0 30.7 ug/L 123 68.130 8 25 2-Hexanone ND 25.0 22.7 ug/L 91 10.150 4 35 Chloroform ND 25.0 27.3 u /L 109 70-130 9 20 Chloromethane...-.. _._.- ND - --- --- "25.0.--MMMT.._31.5 -......._,..ug/L....... .- - 126 .. 39-144 16 25 cis-1,2-Dichloroethene ND 25.0 29.4 ug/L 118 70-130 12 20 cis-1,3-Dichloropropene ND 25.0 30.8 ug/L 123 70.133 6 20 - ........ . ... ... _MMMT.. - ---- __.. ......... . ... . ........__......_... . _.-. MMMT..----- Acetone ND 25.0 19.2 ug/L 77 1-o---150 11 3 Dibromochloromethane ND 25.0 29.5 ug/L 118 70-148 3 25 Dibromomethane ND 25.0 28.5 ug/L 114 70-130 3 25 Dichlorodifluoromethane ND 25.0 33.4 ug/L 134 25.142 10 30 Isopropyl Ether(DI PE) ND 25:0 24.9 ug/L 100 64_13B 8 25 Ethyl-t-butyl ether(ETBE) ND 25.0 26.1 ug/L 105 70-130 7 25 Isopropylbenzene ND " 25.0 30.4 ug/L 122 70-132 5 20 m,p-Xylene ND 50.0 54.9 ug/L 110 70-133 4 25 Methylene Chloride ND 25.0 22.9 ug/L 91 52-130 9 20 _....MTBE__...- --- - MMMT.. - ------ 25 Methyl-t-Butyl Ether(MTBE) ND 25.0 26.3 ug/L 105 70-130 9 Naphthalene ND 25.0 24.1 ug/L 96 60-140 140 4 30 n-Butylbenzene ND 25.0 30.2 ug/L 121 61-149 4 20 ................ ..MMMT_-.._ __ _;,.___.._............... ..:.... ................_.............._..MMMT-."......_........-..,_..._ Carbon disulfide ND 25.0 22.9 ug/L 92 .49-140 12 20 TestAmerica Irvine Page 17 of 36 1/13/2014