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Sequoia <br />680 Chesapeake Drive <br />Redwood City, CA 94063 (650) 364-9600 FAX (650) 364-9233 <br />Copper <br />404 N. "get Lane <br />Walnut Creek, CA 9459E (925) 988-9600 FAX (925) 988-9673 <br />Analytical <br />819 Striker Avenue, Suite 8 <br />Sacramento, CA 95834 (916) 921-9600 FAX (916) 921-0100 <br />EPA 6010 <br />1455 McDowell Blvd. North. Ste. D Petaluma, CA 94954 (707) 792-1865 FAX (707) 792-0342 <br />:::::.........................>>::::.:l.>.nt<>Pr:> <br />Gettler-R an - Dublin <br />Y <br />,..c:: <br />C e o ect>:ID::»:»>Ch <br />j <br />><:::>::v :.:>:................................................................................ <br />r n:.::..:...:.:....,2.:......:.:....:t...:.. <br />e o #9 3 32 S ockton <br />, <br />6747 Sierra Court, Suite J <br />Matrix: <br />Solid <br />Dublin, CA 94568 <br />J. Kelly <br />J. Kelly <br />Attention: Greg Gurss <br />QC Sample Group: <br />9031116-129 Reported: Mar 16, 19! <br />ANALYTE <br />Cadmium <br />Chromium <br />Copper <br />Nickel <br />Lead <br />Zinc <br />Arsenic <br />Method: <br />EPA 6010 <br />EPA 6010 <br />EPA 6010 <br />EPA 6010 <br />EPA 6010 <br />EPA 6010 <br />EPA 6010 <br />Analyst: <br />J. Kelly <br />J. Kelly <br />J. Kelly <br />J. Kelly <br />J. Kelly <br />J. Kelly <br />J. Kelly <br />MS/MSD <br />LCS031299 <br />Date Prepared: <br />3/12/99 <br />Date Analyzed: <br />3/15/99 <br />Instrument I.D.#: <br />MV -4 <br />Batch#: <br />9030973 <br />9030973 <br />9030973 <br />9030973 <br />9030973 <br />9030973 <br />9030973 <br />Date Prepared: <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />Date Analyzed: <br />3/15/99 <br />3/15/99 <br />3/15/99 <br />3/15/99 <br />3/15/99 <br />3/15/99 <br />3/151/99 <br />Instrument I.D.#: <br />MV -4 <br />MV -4 <br />MV -4 <br />MV -4 <br />MV -4 <br />MV -4 <br />MV -4 <br />Conc. Spiked: <br />50 mg/kg <br />50 mg/kg <br />50 mg/kg <br />50 mg/kg <br />50 mg/kg <br />50 mg/kg <br />50 mg/kg <br />Matrix Spike <br />% Recovery: <br />98 <br />110 <br />120 <br />124 <br />106 <br />132 <br />Matrix Spike <br />Duplicate % <br />Recovery: <br />98 <br />110 <br />100 <br />104 <br />100 <br />92 <br />Relative % <br />Difference: <br />: ::::::: <br />:::::: <br />0.0 <br />i <br />: y <br />0.0 <br />6 6? <br />8.0 <br />ijC.i::: <br />7.4 <br />... : <br />:: : <br />i <br />3.7 <br />: <br />... <br />13 <br />::::l:ii <br />: :: <br />0.0 <br />:s :: <br />i <br />LCS Batch#: <br />LCS031299 <br />Date Prepared: <br />3/12/99 <br />Date Analyzed: <br />3/15/99 <br />Instrument I.D.#: <br />MV -4 <br />LCS % <br />3/12/99 <br />Recovery: <br />104 <br />LCS031299 <br />LCS031299 <br />LCS031299 <br />LCS031299 <br />LCS031299 <br />LCS031299 <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />3/12/99 <br />3/15/99 <br />3/15/99 <br />3/15/99 <br />3/15/99 <br />3/15/99 <br />3/15/99 <br />MV -4 <br />MV -4 <br />MV -4 <br />MV -4 <br />MV -4 <br />MV -4 <br />108 110 108 98 104 104 <br />o Recovery <br />Control Limits: 80-120 80-120 80-120 80-120 80-120 80-120 80-120 <br />SEQUOIA ANALYTICAL, #1271 <br />Julianne Fegley <br />Project Manager <br />urease Now <br />The LCS is a control sample of known, interferent free matrix that is analyzed using the same reagents, <br />preparation, and analytical methods employed for the samples. The matrix spike is an aliquot of sample <br />fortified with known quantities of specific compounds and subjected to the entire analytical procedure. If <br />the recovery of analytes from the matrix spike does not fall within specified control limits due to matrix <br />interference, the LCS recovery is to be used to validate the batch. <br />* High iron concentration in sample interferred with spike recovery. <br />9031116.GET <36> <br />