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Field blank analysis report, GCMS, Nov 2001

Machine-extracted title · confidence 90%

Laboratory field blank analysis report for NYC DEP water samples collected on November 22, 2001, using gas chromatography mass spectrometry.

NYC-WTC_000070792–000070807

Folder label: “28662

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NYC 9/11 Public Portal Document

REPORT OF ANALYSIS Westchester County Department of Labs and Research 2 Dana Road Valhalla, New York

Agency: New York City DEP DWQC Sample FIELD BLANK Distribution Laboratory 96-05 Horace Harding Ex. Corona N.Y. 11368 Sample FBD Dr. Ian Hurley ID of Source: Received BH Collection 11/22/2001 AT Bottle p1145,q414 Submitted 11/22/2001 AT 9:40:00 Collected By: LAB Sample Type: POT_DW Comment: PWS No.: Source Code: Type Descriptor: Sample chilled on arrival? : YES Report

Sample No. AD28662 Method Test Description Results Units MDL Analyzed on Validator Organics GCMS Scan For LI s Other unknown compounds ug/L 12/7/2001 DLV The GCMS scan, from 35 to 550 amu, does not reveal the presence of unusual compounds. The recovery for the Surrogate Standard in this sample was 89%. Recoveries for 9 of the 44 compounds in the LCS Standard were outside of their acceptance ranges. The chromatogram reveals contamination which has been identified to be from the TurboVap concentrator.

Approved Pam Dilsizian QA Officer Date Approved: 1/10/2002 Environmental Laboratories emailed Copy 1/10/2002

NYS ELAP # 10108 Page 1 of 1

NYC-WTC_000070792

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NYC-WTC_000070792Source: NYC Law Department, mirrored locally

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