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 STATEN ISLAND Distribution Laboratory 96-05 Horace Harding Ex. Corona N.Y. 11368 Sample 53550 Dr. Ian Hurley ID of Source: Received EP Collection 09/17/01 AT 11:50:00 Bottle 53550 Submitted 09/18/01 AT 10:49:00 Collected By: SACKETT Sample Type: POT_DW Comment: PWS No.: Source Code: Type Descriptor: Chilled on arrival?: yes Report

Sample No. AD22779 Method Test Description Results Units MDL Analyzed on Validator 524.2 Bromo benzene <MDL ug/L .5 09/19/01 SV 524.2 Bromochloromethane <MDL ug/L .5 09/19/01 SV 524.2 Bromomethane <MDL ug/L .5 09/19/01 SV 524.2 Carbon tetrachloride <MDL ug/L .5 09/19/01 SV 524.2 Chlorobenzene <MDL ug/L .5 09/19/01 SV 524.2 Chloroethane <MDL ug/L .5 09/19/01 SV 524.2 Chloromethane <MDL ug/L .5 09/19/01 SV 524.2 cis-1,2-dichloroethene <MDL ug/L .5 09/19/01 SV

243 “824.2 cis-1,3-dichloropropene Dibromomethane Dichlorodifluoromethane <MDL <MDL <MDL ug/L ug/L ug/L .5 .5 .5 09/19/01 09/19/01 09/19/01 SV SV SV 524.2 Ethylbenzene <MDL ug/L .5 09/19/01 SV 524.2 Hexachlorobutadiene <MDL ug/L .5 09/19/01 SV 524.2 Isopropylbenzene <MDL ug/L .5 09/19/01 SV 524.2 Methyl iso-butyl ketone (MIBK) < MDL ug/L 1.0 09/19/01 SV 524.2 Methyl tert-butyl ether (MTBE) <MDL ug/L 1.0 09/19/01 SV 524.2 Methylene Chloride <MDL ug/L .5 09/19/01 SV 524.2 N-butylbenzene <MDL ug/L .5 09/19/01 SV 524.2 N-propylbenzene <MDL ug/L .5 09/19/01 SV 524.2 Naphthalene <MDL ug/L .5 09/19/01 SV 524.2 O-xylene <MDL ug/L .5 09/19/01 SV

Approved Donna Popp Chief of Env. Lab Services Date Approved: 10/09/01

Environmental Laboratories Copy 10/09/01

NYS ELAP # 10108 Page 3 of 6

NYC-WTC_000026094