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Mercury standard calibration report, Westchester County Labs, Apr 9 2002

Machine-extracted title · confidence 100%

Post-run laboratory report documenting mercury standard calibration data from April 9, 2002.

NYC-WTC_000041184–000041188

Folder label: “Hg April 02

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Scanned page image, NYC-WTC_000041186
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NYC 9/11 Public Portal Document

Westchester county labs Folder: RUNS2 Page 503 Protocol: hg-cv ***POST-RUN REPORT*** Line Cone. Units SD/RSD 1 2 3 4 5

*** Sample ID: 8263 Seq: 839 15:36;28 09 Apr 02 HG

Hg L—. 056 ppb .000 .056 9

*** Check Standard: 2 Ck21.0 qc Seq: 840 15:38:06 09 Apr 02 HG Line Flag %Rcv. / Found True Units SD/RSD Hg 102. v 1.02 1.00 ppb .000 *** Sample ID: 8264 Seq: 841 15:39:43 09 Apr 02 HG

Hg .030 ppb .000 .030 SC

*** Sample ID: 8265 Seq: 842 15:41:23 09 Apr 02 HG HgC .029 ppb .000 .029 =================================================================== *** Sample ID: 8266 Seq: 843 15:43:04 09 Apr 02 HG Hg 057 ppb .000 .057 SB

*** Sample ID: 8269 Seq: 844 15:45:20 09 Apr 02 HG H. .060 ppb .000 .060 es —====================================================================== *** Sample ID: 269 spk Seq: 845 15:47:11 09 Apr 02 HG Hg 5.26 ( pppB .000 5.26 eg ============================================================= *** Sample ID: 8269d Seq: 846 15:48:58 09 Apr 02 HG Hg .051 ppb .000 .051

*** Sample IDA 8269d spk Seq: 847 15:50:35 09 Apr 02 HG 5.32 \ ppb Hg .000 5.32

*** Sample ID: 8270 Seq: 848 15:52:23 09 Apr 02 HG Hg .042 ppb .000 .042 ss

*** Sample ID: 8323 Seq: 849 15:53:59 09 Apr 02 HG Hg .049 ppb .000 .049 as

*** Sample ID: 8324 Seq: 850 15:55:38 09 Apr 02 HG Hg 0.049 ppb .000 .049 as *** Check Standard :/2 Ck21.0 qc 1 Seq: 851 15:57:16 09 Apr 02 HG Line Flag %Rcv. / Found True Units SD/RSD Hg 102. V 1.02 1.00 PPb .000 ss

NYC-WTC_000041186

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NYC-WTC_000041186Source: NYC Law Department, mirrored locally

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