Chain of custody record, Westchester County Lab, Sep 2001

NYC 9/11 Public Portal Document

REPORT OF ANALYSIS Westchester County Department of Labs and Research 2 Dana Road Valhalla, New York

ency: NYCDEP Bureau Water Supply Sample NYC DEP 465 Columbus Ave. 19 WEST LAKE DRIVE Valhalla, NY 10595 VALHALLA, N.Y. Sample DEL 18 #6497 Attention: Steve Schindler ID of Source: NYC Received EP Collection 09/14/01 AT 2:00:00 Bottle del18 6497 Submitted 09/17/01 AT 12:45:00 Collected By: CURCIO/SCOTT Sample Type: POT_DW Comment: PWSNo.: Source Code: 000 Type Descriptor Chilled on arrival?: yes Report

Sample No. AD22654 Method Test Description Results Units MDL Analyzed on Validator 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

212 924.2 P & M-xylene P-isopropyltoluene SEC-butylbenzene <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 Styrene <MDL ug/L .5 09/19/01 SV 524.2 TERT-butylbenzene <MDL ug/L .5 09/19/01 SV 524.2 Tetrachloroethene <MDL ug/L .5 09/19/01 SV 524.2 Toluene <MDL ug/L .5 09/19/01 SV 524.2 trans-1,2-dichloroethene <MDL ug/L .5 09/19/01 SV 524.2 trans-1,3-dichloropropene <MDL ug/L .5 09/19/01 SV 524.2 Trichloroethene <MDL ug/L .5 09/19/01 SV 524.2 Trichlorofluoromethane <MDL ug/L .5 09/19/01 SV 524.2 Vinyl chloride <MDL ug/L .5 09/19/01 SV The recovery of naphthalene in the calibration standard associated with this sample was 63%.

Approved Donna Popp Chief of Env. Lab Services Date Approved: 10/17/01

Environmental Laboratories Copy of Fax 10/17/01

NYS ELAP # 10108 Page 6 of8

NYC-WTC_000025664