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J00-0SNIO, United States Environmental Protection Agency
<br /> Region 9 Laboratory
<br /> °2 1337 S.46th Street, Building 201, Richmond, CA 94804
<br /> 44 PRo'�'�' Phone:(510)412-2300 Fax:(510)412-2302
<br /> Project Manager: Carolyn Douglas Brownfields and Site Assessment Section SDG: 11021B
<br /> Project Number: R11B03 75 Hawthorne Street Reported: 02/22/11 13:18
<br /> Project: El Concilio Site#2 2011 TBA San Francisco CA,94105
<br /> Quality Control
<br /> Qualifiers/ Quantitation Spike Source %REC RPD RPD
<br /> Analyte Result CommentsLimit Units Level Result %REC Limits Limit
<br /> Batch BlAO098-5035 VOA Solid-VOCs,solids,medium Prepared&Analyzed:01/25/11
<br /> level Volatile Organic Compounds by EPA Method 8260C-Quality Control
<br /> LCS(B1A0098-BSl)
<br /> Toluene 2,540 250 2500 102 78-116 200
<br /> trans-1,3-Dichloropropene 2,750 250 2500 110 83-123 200
<br /> 1,1,2-Trichloroethane 2,490 250 2500 100 81-115 200
<br /> Tetrachloroethene 2,520 250 2500 101 75-121 200
<br /> 1,3-Dichloropropane 2,540 250 2500 102 81-116 200
<br /> 2-Hexanone 19,800 2,000 20000 99 70-148 200
<br /> Chlorodibromomethane 2,840 250 2500 113 77-122 200
<br /> 1,2-Dibromoethane(EDB) 2,620 250 2500 105 81-118 200
<br /> Chlorobenzene 2,520 250 2500 101 78-114 200
<br /> Ethylbenzene 2,560 250 2500 102 80-119 200
<br /> m&p-Xylene 5,180 500 5000 104 80-119 200
<br /> o-Xylene 2,660 250 2500 107 81-121 200
<br /> Styrene 2,650 250 2500 106 81-119 200
<br /> Bromoform 2,830 250 2500 113 75-126 200
<br /> 1,1,2,2-Tetrachloroethane 2,540 250 2500 102 78-119 200
<br /> 1,2,3-Trichloropropane 2,460 250 2500 99 79-119 200
<br /> 1,3-Dichlorobenzene 2,500 250 2500 100 78-116 200
<br /> 1,4-Dichlorobenzene 2,440 250 2500 97 77-113 200
<br /> 1,2-Dichlorobenzene 2,510 250 2500 100 76-116 200
<br /> 1,2-Dibromo-3-chloropropane 2,440 1,000 2500 98 42-161 200
<br /> Surrogate:l,2-Dichloroethane-d4 1230 1250 98 33-172
<br /> Surrogate:Toluene-d8 1210 1250 97 54-174
<br /> Surrogate:4-Bromofluorobenzene 1240 1250 99 32-170
<br /> Surrogate:1,2-Dichlorobenzene-d4 1230 1250 99 33-174
<br /> Matrix Spike(B1A0098-MSl) Source:1101029-08
<br /> Dichlorodifluoromethane 2,290 320 ug/kg 2890 ND 79 10-194 20
<br /> dry
<br /> Chloromethane 2,760 320 2890 ND 96 46-132 20
<br /> Vinyl chloride 2,830 320 2890 ND 98 65-129 20
<br /> Bromomethane 1,520 320 2890 ND 52 10-186 20
<br /> Chloroethane 1,430 320 2890 ND 50 10-190 20
<br /> Trichlorofluoromethane 3,340 320 2890 ND 116 58-140 20
<br /> 1,1-Dichloroethene 3,580 320 2890 ND 124 57-141 20
<br /> 1,1,2-Trichloro-1,2,2-trifluoroethane 3,470 320 2890 ND 120 59-153 20
<br /> Acetone 34,900 2,600 23100 ND 151 29-180 20
<br /> Dichloromethane 3,860 320 2890 ND 133 62-126 20
<br /> trans-1,2-Dichloroethene 3,880 320 2890 ND 134 66-127 20
<br /> tert-Butyl methyl ether(MTBE) 16,700 1,300 11600 ND 144 73-130 20
<br /> 1,1-Dichloroethane 3,960 320 2890 ND 137 68-123 20
<br /> cis-1,2-Dichloroethene 4,030 320 2890 ND 139 69-127 20
<br /> 1101029 FINAL 02 22 11 1318 Page 11 of 15
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