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Mercury standard calibration report, Westchester County Labs, Mar 29 2002

Machine-extracted title · confidence 100%

Post-run laboratory report documenting mercury standard calibration data from March 29, 2002.

NYC-WTC_000041160–000041171

Folder label: “Hg March 02

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NYC 9/11 Public Portal Document

Westchester county labs Folder: RUNS2 Page 466 Protocol: hg-cv ***POST-RUN REPORT*** Line Conc. Units SD/RSD 1 2 3 4 5

*** Standard: 1 Rep: 1 Seq: 595 14:54:37 29 Mar 02 HG Hg .000 ppb 1059 *** Standard: 2 Rep: 1 Seq: 596 14:56:47 29 Mar 02 HG

Hg .400 ppb 37044 *** Standard: 3 Rep: 1 Seq: 597 14:58:29 29 Mar 02 HG

Hg 1.00 PPb 56155 *** Standard: 4 Rep: 1 Seq: 598 15:00:12 29 Mar 02 HG

Hg 3.00 PPb 170541 *** Standard: 5 Rep: 1 Seq: 599 15:01:59 29 Mar 02 HG

Hg 5.00 Ppb 296357 *** Standard: 6 Rep: 1 Seq: 600 15:03:40 29 Mar 02 HG

Hg 10.0 PPb 605473 *** 4Check Standard: 2 Ck21.0 qc Seq: 601 15:06:27 29 Mar 02 HG Line: Flag %Rcv./ Found True Units SD/RSD Hg 87.If .871 1.00 PPb .000 > *** Sample ID: 7133 pot Seq: 602 15:08:08 29 Mar 02 HG Hg -.022 PPb .000 -.022

& *** Sample ID: 7135 Seq: 603 15:09:43 29 Mar 02 HG OC Hg .033 PPb .000 .033

*** Sample ID: 7137 Seq: 604 15:11:31 29 Mar 02 HG Hg .011 PPb .000 .011

*** Sample ID: 7171 Seq: 605 15:14:17 29 Mar 02 HG Hg -.010 PPb .000 -.010

*** Sample ID: 7172 Seq: 606 15:16:24 29 Mar 02 HG Hg -.018 PPb .000 -.018 ss

*** Sample ID: 7173 Seq: 607 15:18:24 29 Mar 02 HG Hg -.003 Ppb .000 -.003 SB

*** Sample ID: 7174 Seq: 608 15:20:12 29 Mar 02 HG Hg -.026 PPb .000 -.026 as

NYC-WTC_000041160

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NYC-WTC_000041160Source: NYC Law Department, mirrored locally

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