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batcn &u x <br />cbCurtis & Tompkins, ltd. <br />Analyfical Labaatories, Since 1878 <br />Lab if: <br />ib//UU <br />Location: <br />Bridgestone/Firestone Metal Shavings <br />Client: <br />MWH <br />Prep: <br />EPA 3050B <br />Pro'ect#: <br />4050530.010101 <br />Anal sis: <br />EPA 6010B <br />Matrix: <br />Soi <br />Batc <br />114867 <br />Units: <br />mg/Kg <br />Prepared: <br />06/30/06 <br />Basis: <br />as received <br />Analyzed: <br />06/30/06 <br />Diln Fac: <br />1.000 <br />10.00 <br />10.23 <br />Type: BS Lab ID: QC345784 <br />Type: BSD Lab ID: QC345785 <br />Ana _' <br />'.:, �,:. <br />. <br />,. <br />Antimony <br />iuu.0 <br />9,3.66 <br />94 <br />8 - <br />Arsenic <br />50.00 <br />50.89 <br />102 <br />80-120 <br />Barium <br />100.0 <br />99.03 <br />99 <br />80-120 <br />Beryllium <br />2.500 <br />2.645 <br />106 <br />80-120 <br />Cadmium <br />10.00 <br />10.23 <br />102 <br />80-120 <br />Chromium <br />100.0 <br />100.9 <br />101 <br />80-120 <br />Cobalt <br />25.00 <br />24.71 <br />99 <br />80-120 <br />Copper <br />12.50 <br />12.42 <br />99 <br />80-120 <br />Lead <br />100.0 <br />98.04 <br />98 <br />80-120 <br />Molybdenum <br />20.00 <br />20.22 <br />101 <br />80-120 <br />Nickel <br />25.00 <br />24.57 <br />98 <br />80-120 <br />Selenium <br />50.00 <br />50.21 <br />100 <br />80-120 <br />Silver <br />10.00 <br />9.848 <br />98 <br />80-120 <br />Thallium <br />50.00 <br />49.91 <br />100 <br />80-120 <br />Vanadium <br />25.00 <br />25.25 <br />101 <br />80-120 <br />Zinc <br />25.00 <br />25.23 <br />101 <br />80-120 <br />Type: BSD Lab ID: QC345785 <br />Ana _' <br />'.:, �,:. <br />, . <br />>'=,. <br />SD <br />Lim <br />Antimony <br />luu.0 <br />96.11 <br />9 6 <br />8u-i2u3 <br />Arsenic <br />50.00 <br />51.33 <br />103 <br />80-120 <br />1 <br />20 <br />Barium <br />100.0 <br />100.4 <br />100 <br />80-120 <br />1 <br />20 <br />Beryllium <br />2.500 <br />2.690 <br />108 <br />80-120 <br />2 <br />20 <br />Cadmium <br />10.00 <br />10.33 <br />103 <br />80-120 <br />1 <br />20 <br />Chromium <br />100.0 <br />102.9 <br />103 <br />80-120 <br />2 <br />20 <br />Cobalt <br />25.00 <br />25.09 <br />100 <br />80-120 <br />2 <br />20 <br />Copper <br />12.50 <br />12.62 <br />101 <br />80-120 <br />2 <br />20 <br />Lead <br />100.0 <br />99.21 <br />99 <br />80-120 <br />1 <br />20 <br />Molybdenum <br />20.00 <br />20.68 <br />103 <br />80-120 <br />2 <br />20 <br />Nickel <br />25.00 <br />25.03 <br />100 <br />80-120 <br />2 <br />20 <br />Selenium <br />50.00 <br />50.74 <br />101 <br />80-120 <br />1 <br />20 <br />Silver <br />10.00 <br />10.02 <br />100 <br />80-120 <br />2 <br />20 <br />Thallium <br />50.00 <br />50.89 <br />102 <br />80-120 <br />2 <br />20 <br />Vanadium <br />25.00 <br />25.81 <br />103 <br />80-120 <br />2 <br />20 <br />Zinc <br />25.00 <br />25.65 <br />103 <br />80-120 <br />2 <br />20 <br />RPD= Relative Percent Difference <br />Page 1 of 1 7_0 <br />