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Mercury standard calibration report, Westchester County Labs, Apr 5 2002

Machine-extracted title · confidence 100%

Post-run laboratory report documenting mercury standard calibration data from April 5, 2002.

NYC-WTC_000041179–000041183

Folder label: “Hg April 02

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Scanned page image, NYC-WTC_000041181
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NYC 9/11 Public Portal Document

Westchester county labs Folder: RUNS2 Page 499 Protocol: hg-cv ***POST-RUN REPORT*** Line Conc. Units SD/RSD 1 2 3 4 5

*** Sample ID: 7978d spk, Seq: 776 16:10:11 05 Apr 02 HG ( 5-41 0.ppbU * (D° • 0 .000 5.41 Hg *** Check Standard: 2 Ck21.0 qc Seq: 777 16:11:58 05 Apr 02 HG Line Flag %Rcv. / Found True Units SD/RSD Hg 110. / 1.10 1.00 PPb .000 *** Sample ID: 8012 Seq: 778 16:13:49 05 Apr 02 HG

Hg -.060 ppb .000 -.060

*** Sample ID: 8013 Seq: 779 16:15:47 05 Apr 02 HG Hg -.027 ppb .000 -.027 s

*** Sample ID: 8014 Seq: 780 16:17:29 05 Apr 02 HG Hg -.044 PPb .000 -.044

Sample ID: 8016 Seq: 781 16:19:15 05 Apr 02 HG Hg -.042 ppb .000 -.042 *

*** Sample ID: 8017 Seq: 782 16:20:51 05 Apr 02 HG Hg -.030 PPb .000 -.030 ========================================== *** Sample ID: 8018 Seq: 783 16:22:27 05 Apr 02 HG Hg -.028 PPb .000 -.028 =

*** Sample ID: 8063 Seq: 784 16:24:45 05 Apr 02 HG Hg -.023 PPb .000 -.023 =

*** Sample ID: 8064 Seq: 785 16:26:25 05 Apr 02 HG Hg -.025 PPb .000 -.025 ======================================== *** Sample ID: 8065 Seq: 786 16:28:02 05 Apr 02 HG Hg -.029 PPb .000 -.029

*** Sample ID: 8066 Seq: 787 16:29:39 05 Apr 02 HG Hg -.040 PPb / .000 -.040 *** Check Standard: 2 Ck21.0 qc Seq: 788 16:31:47 05 Apr 02 HG Line Flag %Rcv. / Found True Units SD/RSD Hg 112. 1.12 1.00 PPb .000

NYC-WTC_000041181

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NYC-WTC_000041181Source: NYC Law Department, mirrored locally

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