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-YAWLaboratories Inc. . <br /> Environmental Testing Laboratory Since 1949 <br /> aw Reported: 02/18/2013 14:19 <br /> 180 Promenade Circle,Suite 320 Project: Hamey Lane,S.J.County <br /> Sacramento,CA 95834 Project Number. 139866-Annual <br /> Project Manager. Sheila Richgels <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Report - Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent Lab <br /> Constituent Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Quals <br /> QC Batch ID: BWBO146 J Used client sample: N <br /> Benzene MS 1302255-02 ND 24.050 25.000 ug/L 96.2 70-130 <br /> MSD 1302255-02 ND 26.330 25.000 ug/L 9.1 105 20 70-130 <br /> Bromodichloromethane MS 1302255-02 ND 25.770 25.000 ug/L 103 70-130 <br /> MSD 1302255-02 ND 27.890 25.000 ug/L 7.9 112 20 70-130 <br /> Chlorobenzene MS 1302255-02 ND 23.740 25.000 ug/L 95.0 70-130 <br /> MSD 1302255-02 ND 25.920 25.000 ug/L 8.8 104 20 70-130 <br /> Chloroethane MS 1302255-02 ND 26.630 25.000 ug/L 107 70-130 <br /> MSD 1302255-02 ND 29.060 25.000 ug/L 8.7 116 20 70-130 <br /> 1,4-Dichlorobenzene MS 1302255-02 ND 24.430 25.000 ug/L 97.7 70-130 <br /> MSD 1302255-02 ND 26.650 25.000 ug/L 8.7 107 20 70-130 <br /> 1,1-Dirhloroethane MS 1302255-02 ND 23.360 25.000 ug/L 93.4 70-130 <br /> MSD 1302255-02 ND 24.910 25.000 ug/L 6.4 99.6 20 70-130 <br /> ichloroethene MS 1302255-02 ND 24.960 25.000 ug/L 99.8 70-130 <br /> MSD 1302255-02 ND 26.980 25.000 ug/L 7.8 108 20 70-130 <br /> Toluene MS 1302255-02 ND 23.760 25.000 ug/L 95.0 70-130 <br /> MSD 1302255-02 ND 25.880 25.000 ug/L 8.5 104 20 70-130 <br /> Trichloroethene MS 1302255-02 0.58000 23.970 25.000 ug/L 93.6 70-130 <br /> MSD 1302255-02 0.58000 25.510 25.000 ug/L 6.2 99.7 20 70-130 <br /> 1,2-Dichloroethane-d4(Surrogate) MS 1302255-02 ND 10.800 10.000 ug/L 108 75-125 <br /> MSD 1302255-02 ND 10.890 10.000 ug/L 0.8 109 75-125 <br /> Toluene-d8(Surrogate) MS 1302255-02 ND 9.8700 10.000 ug/L 98.7 80-120 <br /> MSD 1302255-02 ND 9.8700 10.000 ug/L 0 98.7 80-120 <br /> 4-Bromofluorobenzene(Surrogate) MS 1302255-02 ND 10.280 10.000 ug/L 103 80-120 <br /> MSD 1302255-02 ND 10.380 10.000 ug/L 1.0 104 80-120 <br /> QC Batch ID: BWBO147 Used client sample: Y-Description: MW-2, 02/01/2013 11:26 <br /> Benzene MS 1302261-02 0.26000 24.920 25.000 ug/L 98.6 70-130 <br /> MSD 1302261-02 0.26000 24.900 25.000 ug/L 0.1 98.6 20 70-130 <br /> Bromodichloromethane MS 1302261-02 ND 24.510 25.000 ug/L 98.0 70-130 <br /> MSD 1302261-02 ND 25.120 25.000 ug/L 2.5 100 20 70-130 <br /> Chlorobenzene MS 1302261-02 ND 23.990 25.000 ug/L 96.0 70-130 <br /> MSD 1302261-02 ND 23.720 25.000 ug/L 1.1 94.9 20 70-130 <br /> Chloroethane MS 1302261-02 ND 26.710 25.000 ug/L 107 70-130 <br /> MSD 1302261-02 ND 27.140 25.000 ug/L 1.6 109 20 70-130 <br /> 1,4-Dichlorobenzene MS 1302261-02 ND 23.350 25.000 ug/L 93.4 70-130 <br /> MSD 1302261-02 ND 23.370 25.000 ug/L 0.1 93.5 20 70-130 <br /> �Dichloroethane MS 1302261-02 ND 23.400 25.000 ug/L 93.6 70-130 <br /> MSD 1302261-02 ND 23.390 25.000 ug/L 0.0 93.6 20 70-130 <br /> The results in this report apply to the samples analyzed in accordance with the chain of custody document.77u's analytical report must be reproduced in its entirety. <br /> All results listed in this report are for the exclusive use of the submitting party.BC Laboratories,Inc.assumes no responsibility for report alteration,separation,detachment or third party interpretation <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)3274911 FAX(661)327-1918 www.bdabs.com Page 43 of 49 <br />