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cbCurtis & Tompkins, Ltd. <br />California Title 22 Metals <br />Lab #: <br />218237 <br />Location: <br />Bri gestone Ranc o Cordova <br />Client: <br />MWH <br />Prep: <br />EPA 3050B <br />Pro'ect#: <br />4050530.010101Anal <br />sis: <br />EPA 6010B <br />Matrix: <br />Soil <br />Batc15999/ <br />Barium <br />Units: <br />mg/Kg <br />Prepared: <br />02/11/10 <br />Diln Fac: <br />1.000 <br />Analyzed: <br />02/12/10 <br />Type: BS Lab ID: QC532442 <br />Analyte <br />i e <br />-Result <br />REC <br />Limits <br />Antimony <br />Lim <br />Antimony <br />luu.0 <br />- <br />Arsenic <br />50.00 <br />50.65 <br />101 <br />76-119 <br />Barium <br />100.0 <br />98.20 <br />98 <br />73-120 <br />Beryllium <br />2.500 <br />2.623 <br />105 <br />80-122 <br />Cadmium <br />10.00 <br />10.37 <br />104 <br />77-120 <br />Chromium <br />100.0 <br />97.51 <br />98 <br />74-118 <br />Cobalt <br />25.00 <br />24.71 <br />99 <br />72-114 <br />Copper <br />12.50 <br />11.96 <br />96 <br />72-117 <br />Lead <br />100.0 <br />100.2 <br />100 <br />73-117 <br />Molybdenum <br />20.00 <br />20.51 <br />103 <br />79-120 <br />Nickel <br />25.00 <br />24.67 <br />99 <br />73-115 <br />Selenium <br />50.00 <br />50.67 <br />101 <br />71-121 <br />Silver <br />10.00 <br />9.546 <br />95 <br />72-115 <br />Thallium <br />50.00 <br />50.05 <br />100 <br />73-116 <br />Vanadium <br />25.00 <br />24.68 <br />99 <br />72-121 <br />Zinc <br />25.00 <br />25.42 <br />102 <br />71-119 <br />Type: BSD Lab ID: QC532443 <br />Ana to <br />s e <br />Result <br />RE <br />Lets <br />RPD <br />Lim <br />Antimony <br />luu.0 <br />103.6 <br />104 <br />77221 <br />Arsenic <br />50.00 <br />50.86 <br />102 <br />76-119 <br />0 <br />20 <br />Barium <br />100.0 <br />98.26 <br />98 <br />73-120 <br />0 <br />18 <br />Beryllium <br />2.500 <br />2.643 <br />106 <br />80-122 <br />1 <br />19 <br />Cadmium <br />10.00 <br />10.41 <br />104 <br />77-120 <br />0 <br />18 <br />Chromium <br />100.0 <br />98.18 <br />98 <br />74-118 <br />1 <br />25 <br />Cobalt <br />25.00 <br />24.96 <br />100 <br />72-114 <br />1 <br />18 <br />Copper <br />12.50 <br />12.09 <br />97 <br />72-117 <br />1 <br />17 <br />Lead <br />100.0 <br />100.6 <br />101 <br />73-117 <br />0 <br />24 <br />Molybdenum <br />20.00 <br />20.42 <br />102 <br />79-120 <br />0 <br />20 <br />Nickel <br />25.00 <br />24.75 <br />99 <br />73-115 <br />0 <br />17 <br />Selenium <br />50.00 <br />51.08 <br />102 <br />71-121 <br />1 <br />19 <br />Silver <br />10.00 <br />9.790 <br />98 <br />72-115 <br />3 <br />17 <br />Thallium <br />50.00 <br />50.43 <br />101 <br />73-116 <br />1 <br />18 <br />Vanadium <br />25.00 <br />24.58 <br />98 <br />72-121 <br />0 <br />18 <br />Zinc <br />25.00 <br />25.38 <br />102 <br />71-119 <br />0 <br />18 <br />RPD= Relative Percent Difference <br />Page 1 of 1 g p <br />8 of 17 <br />