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 HILLVIEW RESERVOIR Distribution Laboratory 96-05 Horace Harding Ex. Corona N.Y. 11368 Sample BX58 Dr. Ian Hurley ID of Source: Received EP Collection 09/20/01 AT 9:25:00 Bottle 6938,7630,5823,51,65,216,223,1 Submitted 09/20/01 AT 10:51:00 Collected By: SPERANZA/TIGLA Sample Type: POT_DW Comment: PWSNo.: Source Code: Type Descriptor: Chilled on arrival?: yes Report

Sample No. AD23080 Method Test Description Results Units MDL Analyzed on Validator 524.2 Hexachlorobutadiene <MDL ug/L .5 09/21/01 SV 524.2 Isopropylbenzene <MDL ug/L .5 09/21/01 SV 524.2 Methyl iso-butyl ketone (MIBK) <MDL ug/L 1.0 09/21/01 SV 524.2 Methyl tert-butyl ether (MTBE) <MDL ug/L 1.0 09/21/01 SV 524.2 Methylene Chloride <MDL ug/L .5 09/21/01 SV 524.2 N-butylbenzene <MDL ug/L .5 09/21/01 SV 524.2 N-propylbenzene <MDL ug/L .5 09/21/01 SV

212 “824.2 Naphthalene O-xylene P & M-xylene <MDL <MDL <MDL ug/L ug/L ug/L .5 .5 .5 09/21/01 09/21/01 09/21/01 SV SV SV 524.2 P-isopropyltoluene <MDL ug/L .5 09/21/01 SV 524.2 SEC-butylbenzene <MDL ug/L .5 09/21/01 SV 524.2 Styrene < MDL ug/L .5 09/21/01 SV 524.2 TERT-butylbenzene <MDL ug/L .5 09/21/01 SV 524.2 Tetrachloroethene <MDL ug/L .5 09/21/01 SV 524.2 Toluene <MDL ug/L .5 09/21/01 SV 524.2 trans-1,2-dichloroethene <MDL ug/L .5 09/21/01 SV 524.2 trans-1,3-dichloropropene <MDL ug/L .5 09/21/01 SV 524.2 Trichloroethene <MDL ug/L .5 09/21/01 SV 524.2 Trichlorofluoromethane <MDL ug/L .5 09/21/01 SV 524.2 Vinyl chloride < MDL ug/L .5 09/21/01 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 of 8

NYC-WTC_000026279