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Ml <br /> Laboratories Inc. <br /> Environmental Testing Laboratory Since 1949 <br /> Ground Zero Analysis,Inc. Reported: 05/01/2013 1426 <br /> 1172 Kansas Avenue Project: Groundwater Samples(Del Tech) <br /> Modesto,CA 95354 Project Number: 425.2 <br /> Project Manager: Andrew Dom <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 SamplelD Result Result Added Units RPD Recovery RPD Recovery Quals <br /> QC Batch ID: BWD2270 Used client sample: Y-Description: DW-1697 DF,04/2512013 12:20 <br /> Benzene MS 1308594-01 ND 25.150 25.000 u9L 101 70-130 <br /> MSD 1306594-01 ND 23.890 25.000 ugrL 5.1 95.6 20 70-130 <br /> ...... .. ....._______ _- <br /> Toluene MS 1306594-D1 ND 25.660 25.000 ugri 103 70-130 <br /> MSD 1308594-01 NO 24.500 25.000 uglL 4.6 98.0 20 70-130 <br /> 1,2.Dichlomethane-d4(Surrogate) MS 1308594-01 ND 9.7900 10.000 ug'L 97.9 75-125 <br /> MSD 1308594-01 ND 9.8700 10.000 uglL 0.8 __98.7 75-125 <br /> TolueneAll(Surrogale) MS 1308594.01 ND 10.180 10.000 ugll. 102 80-120 <br /> MSD 1308594-01 No 10.130 10.000 ugL D.5 101 80-120 <br /> 4-Brernofluorobenzens(Surtagate) MS 7308594-01 NO 9.5500 10.000 uglL 95.5 80-120 <br /> MSD 1308594-01 ND 9.5900 10.000 uglL 0.4 95.9 80-120. <br /> QC Batch ID: BWD2374 Used client sample: Y-Description: MW-1,04/25/2013 14:45 <br /> 1308594-09 0.9900D 25.120 25.000 ugrL 96.5 70-130 <br /> Benzene MS 3.4 93.2 20 70-130 <br /> MSD 1308594-09 0.99000 24.290 25.000 ugrL <br /> Toluene MS 1308594-09 NO 24.490 25.000 ugL 98.0 70-130 <br /> MSD 1308594-09 ND 23.890 25.D00 ug4. 2.5 95.6 20 70-130 <br /> 1,2-0ichloroelhane-d4(Surrogate) MS 1308594.09 NO 9.7100 10.000 uglL 97.1 75-125 <br /> MSD 1308594-09 ND 9.9800 10.000 ug'L 2.7 99.8 - _ -, .75-125 <br /> Toluene-d6(Sur mgate) MS 1308594-09 ND 10.270 10.000 uglL 103 80-120 <br /> MSD 1308594-09 ND 10.180 10.000 uge. 0.9 102 80-120 <br /> 4-Bromolluorobenzerle(Surrogate) MS 1308594-09 ND 9.2700 10.000 ug/L 92.7 80-120 <br /> MSD 1308594-09 NO 9.5300 10.000 ugrL 2.8 95.3 80-120 <br /> The'end's in this repon apply to the snnryles nnalyzcd iu uecmdonee midufre chain o/'crrrrodl•dnnnner .Th n rllvicnl rGmrt nrusr Ge,w,,nduced in is entirell•. <br /> All mwhs listen in this mwn are Pon is exebmim me urtlmsnbminina party. RC Laboralodcs.lac. ,nnmsn.ml,nalbilis for Imrmmn.>epamrion.detachment or third pan'imemmution. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 waAv.bdabs.com Page 21 of 22 <br />