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cbCurtis &Tompkins Ltd <br /> CLIENT: CRC Environmental, Inc. DATE REPORTED: 01/03/95 <br /> JOB NUMBER: 119142 <br /> BATCH QC REPORT <br /> BLANK SPIKE / BLANK SPIKE DUPLICATE <br /> Compound Spike BS BSD Um is BS % BSO % Average RPD QC Method Analysis <br /> Amount Result Result Recovery Recovery Recovery Batch Date <br /> Calcium 20000 21510 21150 ug/L 108 106 107 2 18205 EPA 6010A 12/21/94 <br /> Copper 250 246 2 244 1 ug/L 99 98 99 1 18205 EPA 6010A 12/21/94 <br /> Iron 1000 1078 1069 ug/L 108 107 108 1 18205 EPA 6010A112/21/94 <br /> 2/21/94 <br /> Magnesium 20000 20620 20130 ug/L 103 101 102 2 18205 EPA 6010A <br /> Manganese 500 484.7 478 3 ug/L 9796 97 1 18205 EPA 6010A2/21/94 <br /> gnd,u<n 20000 20060 19660 ug/L 100 98 99 2 18205 EPA 6010A2/21/94 <br /> Ziac 500 496.9 484.4 ug/L 99 97 98 3 18205 EPA 6010A2/21/94 <br /> I <br />