Water analysis results, Hillview Reservoir, Sept 2001

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 MANHATTAN Distribution Laboratory 96-05 Horace Harding Ex. Corona N.Y. 11368 Sample 30550/DEP LAB #28384 Dr. Ian Hurley ID of Source: Received EP Collection 09/19/01 AT 12:09:00 Bottle c9720,49,484,6885,5498,7381,91 Submitted 09/20/01 AT 10:51:00 Collected By: KAGZI Sample Type: POT_DW Comment: PWSNo.: Source Code: Type Descriptor: Chilled on arrival?: yes Report

Sample No. AD23083 Method Test Description Results Units MDL Analyzed on Validator 524.2 Ethylbenzene <MDL ug/L .5 09/21/20 SV 524.2 Hexachlorobutadiene <MDL ug/L .5 09/21/20 SV 524.2 Isopropylbenzene <MDL ug/L .5 09/21/20 SV 524.2 Methyl iso-butyl ketone (MIBK) <MDL ug/L 1.0 09/21/20 SV 524.2 Methyl tert-butyl ether (MTBE) <MDL ug/L 1.0 09/21/20 SV 524.2 Methylene Chloride <MDL ug/L .5 09/21/20 SV 524.2 N-butylbenzene <MDL ug/L .5 09/21/20 SV

“(12 N-propylbenzene <MDL ug/L .5 09/21/20 SV Naphthalene <MDL ug/L .5 09/21/20 SV 524.2 524.2 O-xylene P & M-xylene <MDL <MDL ug/L ug/L .5 .5 09/21/20 09/21/20 SV SV 524.2 P-isopropyitoluene <MDL ug/L .5 09/21/20 SV 524.2 SEC-butylbenzene <MDL ug/L .5 09/21/20 SV 524.2 Styrene <MDL ug/L .5 09/21/20 SV 524.2 TERT-butylbenzene <MDL ug/L .5 09/21/20 SV 524.2 Tetrachloroethene <MDL ug/L .5 09/21/20 SV 524.2 Toluene <MDL ug/L .5 09/21/20 SV 524.2 trans-1,2-dichloroethene <MDL ug/L .5 09/21/20 SV 524.2 trans-1,3-dichloropropene <MDL ug/L .5 09/21/20 SV 524.2 Trichloroethene <MDL ug/L .5 09/21/20 SV 524.2 Trichlorofluoromethane <MDL ug/L .5 09/21/20 SV

Approved Donna Popp Chief of Env. Lab Services Date Approved: 10/15/01

Environmental Laboratories Copy 10/15/01

NYS ELAP # 10108 Page 6 of8

NYC-WTC_000026303