Chain of custody form, Sep 2001

NYC 9/11 Public Portal Document

REPORT OF ANALYSIS Westchester County Department of Labs and Research 2 Dana Road Valhalla, New York @goncy. NYCDEP Bureau Water Supply Sample NYC DEP 465 Columbus Ave. 19 WEST LAKE DRIVE Valhalla, NY 10595 VALHALLA, N.Y. Sample DEL 18 Attention: Steve Schindler ID of Source: Received KM Collection 09/19/01 AT 8:30:00 Bottle C9806.K6161,6164,3585,293,370 Submitted 09/19/01 AT 11:44:00 Collected By: CURCIO Sample Type: POT_DW Comment: PWSNo.: Source Code: 000 Type Descriptor: Chilled on arrival?: YES Report

Sample No. AD22978 Method Test Description Results Units MDL Analyzed on Validator Recoveries for three of the eighteen compounds in the MDL Standard were above their acceptance ranges. The recovery for Terbacil in the LCS Standard was above its acceptance range. The recoveries for six of the eighteen compounds in the Spiked Sample were outside their acceptance ranges. GCMS Scan For Unknowns Other unknown compounds ug/L 10/10/01 DLV A scan of the extract prepared for the 508 analysis, from 35 - 550 amu using a mass spectrometer, does reveal the presence of non-target compounds. These hydrocarbons do not appear to be present in the Laboratory Blank. glowever, these hydrocarbons were present in previous Laboratory Blanks, and also some samples, analyzed for Vs NYCDEP project. An investigation is being made to determine the source of these hydrocarbons, if other than the samples themselves, i.e. laboratory equipment and reagents. Stat charge for VOLATILE organic Completed 09/20/01 11:35 AM SV

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

Environmental Laboratories Copy of Fax 10/15/01

NYS ELAP # 10108 Page 8 of8

NYC-WTC_000026250