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Water analysis results, Hillview Reservoir, Sept 2001

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Laboratory report detailing metal analysis of water samples collected from Hillview Reservoir on September 26, 2001.

NYC-WTC_000026703–000026751

Folder label: “23650

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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

gency: New York City DEP DWQC Sample HILLVIEW RESERVOIR Distribution Laboratory 96-05 Horace Harding Ex. Corona N.Y. 11368 Sample BX 58 Dr. Ian Hurley ID of Source: Received LK Collection 9/26/2001 AT 9:48:00 Bottle 0072,7103,0236,6619,6645,8761, Submitted 9/26/2001 AT 11:27:00 Collected By: TIGLAO/ASSILE Sample Type: POT_DW Comment: PWS No.: Source Code: Type Descriptor: Sample chilled on arrival? : YES Report

Sample No. AD23650 Method Test Description Results Units MDL Analyzed on Validator 524.2 Bromochloromethane < MDL ug/L .5 9/26/2001 SV 524.2 Bromomethane <MDL ug/L .5 9/26/2001 SV 524.2 Carbon tetrachloride <MDL ug/L .5 9/26/2001 SV 524.2 Chlorobenzene <MDL ug/L .5 9/26/2001 SV 524.2 Chloroethane <MDL ug/L .5 9/26/2001 SV 524.2 Chloromethane <MDL ug/L .5 9/26/2001 SV 524.2 cis-1,2-dichloroethene <MDL ug/L .5 9/26/2001 SV

&2 524.2 cis-1,3-dichioropropene Dibromomethane Dichlorodifluoromethane < MDL < MDL <MDL ug/L ug/L ug/L .5 .5 .5 9/26/2001 9/26/2001 9/26/2001 SV SV SV 524.2 Ethylbenzene <MDL ug/L .5 9/26/2001 SV 524.2 Hexachlorobutadiene <MDL ug/L .5 9/26/2001 SV 524.2 Isopropylbenzene <MDL ug/L .5 9/26/2001 SV 524.2 Methyl iso-butyl ketone (MIBK) < MDL ug/L 1.0 9/26/2001 SV 524.2 Methyl tert-butyl ether (MTBE) < MDL ug/L 1.0 9/26/2001 SV 524.2 Methylene Chloride <MDL ug/L .5 9/26/2001 SV 524.2 N-butylbenzene < MDL ug/L .5 9/26/2001 SV 524.2 N-propylbenzene < MDL ug/L .5 9/26/2001 SV 524.2 Naphthalene <MDL ug/L .5 9/26/2001 SV 524.2 O-xylene < MDL ug/L .5 9/26/2001 SV 524.2 P & M-xylene < MDL ug/L .5 9/26/2001 SV 524.2 P-isopropyltoluene < MDL ug/L .5 9/26/2001 SV

Approved Pam Dilsizian QA Officer Date Approved: 11/5/2001 Environmental Laboratories emailed Original 11/5/2001

NYS ELAP # 10108 Page 5 of 7

NYC-WTC_000026707

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NYC-WTC_000026707Source: NYC Law Department, mirrored locally

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