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Mercury standard calibration report, Westchester County Labs, Mar 26 2002

Machine-extracted title · confidence 100%

Post-run laboratory report documenting mercury standard calibration data from March 26, 2002.

NYC-WTC_000041150–000041154

Folder label: “Hg March 02

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NYC 9/11 Public Portal Document

Westchester county labs Folder: RUNS2 Page 457 Protocol: hg-cv ***POST-RUN REPORT*** Line Cone. Units SD/RSD 1 2 3 4 5

*** Sample ID: 6850 Seq: 519 16:49:08 26 Mar 02 HG Hg -.028 ppb .000 -.028 =

*** Sample ID: 6851 Seq: 520 16:50:46 26 Mar 02 HG Hg .004 ppb .000 .004

*** Sample ID: 6852 Seq: 521 16:52:25 26 Mar 02 HG

Hg .040 ppb .000 .040 =

*** Sample ID: 6853 Seq: 522 16:54:56 26 Mar 02 HG

Hg .034 ppb .000 .034

*** Sample ID: 6854 Seq: 523 16:56:48 26 Mar 02 HG Hg -.052 ppb .000 -.052

*** Sample ID: 6855 Seq: 524 16:58:45 26 Mar 02 HG Hg -.060 ppb .000 -.060

*** Sample ID: 6856 Seq: 525 17:00:35 26 Mar 02 HG Hg -.054 ppb .000 -.054 ss

*** Sample ID: 6957 Seq: 526 17:02:32 26 Mar 02 HG Hg -.036 ppb .000 -.036

*** Sample ID: 6958 Seq: 527 17:04:14 26 Mar 02 HG Hg/ .015 ppb .000 .015

*** Sample ID: 6715 np Seq: 528 17:05:51 26 Mar 02 HG

Hg .033 ppb .000 .033 *** ।Check Standard/ 2 Ck21.0 qc Seq: 529 17:07:29 26 Mar 02 HG Line Flag %Rcv. / Found True Units SD/RSD Hg 105.U 1.05 1.00 ppb .000

NYC-WTC_000041153

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NYC-WTC_000041153Source: NYC Law Department, mirrored locally

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