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ICPMS daily performance check report, May 15, 2002

Machine-extracted title · confidence 98%

Daily instrument calibration and performance verification log for ICPMS equipment conducted on May 15, 2002.

NYC-WTC_000053505–000053628

Folder label: “ICPMS 5/15/02

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NYC 9/11 Public Portal Document

Analyte Mass QC Std % Recovery Int Std % Recovery Spike % Recovery Dilution % Diff Dup. Rei. % Diff Be 9 Li 6 87.832 Sc-1 45 88.980 Cr 52 Cr 53 Mn 55 Co 59 Ni 60 Cu 63 Cu 65 Zn 66 Zn 67 Zn 68 > Ge 72 92.851 As 75 Se 77 Se 82 _ As-1 75 Kr 83 Ag 107 Cd 111 Cd 114 > in 115 93.624 Sb 121 Sb 123 Ba 135 Ba 137 Ho 165 > Tb 159 102.283 Hg 201 Hg 202 n 205 Pb 208 Calibration Analyte MassCurve Type Correlation Coefficient Be 9Linear Thru Zero 0.999997 Li 6Linear Thru Zero > Sc-1 45Linear Thru Zero Cr 52Linear Thru Zero 0.999998 Cr 53Linear Thru Zero 0.999900 Mn 55Linear Thru Zero 0.999914 Co 59Linear Thru Zero 0.999954 Ni 60Linear Thru Zero 0.999985 Cu 63Linear Thru Zero 0.999990 Cu 65Linear Thru Zero 0.999993 Zn 66Linear Thru Zero 0.999997 Zn 67Linear Thru Zero 0.999939 Zn 68Linear Thru Zero 0.999973 Ge 72Llnear Thru Zero As 75Linear Thru Zero 0.999999 Se 77Linear Thru Zero 0.999784 Se 82Linear Thru Zero 0.999970

Sample ID: STD CHECK 0.4 PPB Hg Report Date/Time: Wednesday, May 15, 2002 10:24:01 Page 2

NYC-WTC_000053534

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NYC-WTC_000053534Source: NYC Law Department, mirrored locally

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NYC-WTC_000053630 · Box DEP Box 29

Laboratory analysis results for a Westchester County Department of Labs and Research sample processed on May 15, 2002.

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