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Water analysis report, NYC DEP, GCMS field blank, Nov-Dec 2001

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Laboratory analysis of a field blank water sample collected November 20, 2001, testing for unknown compounds via GCMS.

NYC-WTC_000070999–000071000

Folder label: “28600

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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 FB 11/20/01 Dr. Ian Hurley ID of Source: Received LK Collection 11/20/2001 AT Bottle P1105, Q937 Submitted 11/21/2001 AT Collected By: LAB Sample Type: POT_DW Comment: PWS No.: Source Code: Type Descriptor: Sample chilled on arrival? : YES Report

Sample No. AD28600 Method Test Description Results Units MDL Analyzed on Validator Organics GCMS Scan For Unknowns 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 95%. Recoveries for 16 of the 44 compounds in the LCS Standard were outside of their acceptance ranges.

Approved Donna Popp Chief of Env. Lab Services Date Approved: 12/7/2001

Environmental Laboratories emailed Original 12/7/2001

NYS ELAP #10108 Page 1 of 1

NYC-WTC_000071000

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NYC-WTC_000071000Source: NYC Law Department, mirrored locally

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