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Lead wipe analysis summary, 114 Liberty Street, March 2003

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Summary of analytical results for lead dust wipes collected from the 12th floor at 114 Liberty Street in late March 2003.

NYC-WTC_000186854–000186855
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NYC 9/11 Public Portal Document

JLC ENVIRONMENTAL CONSULTANTS, INC. 200 Park .Avenue South, Suite 1001, New York, New York 10003 Phone; (212) 420-8119 Fax; (212) 420.8082 Project No.: 03-2744 N»wYork CityD,5.P. ELAP lab Code; 11029 Analyte; LEAD/WIPE 56-17 Junction Blvd, NiOSH and AIHA Lab Code; 100273 Pale Collected 3/29/2003 FlushIno.NY 11373 Nvlap Lab Coda: 101653 Oate Received: 3/30/2003 dale Anaiysed: 3/30/2003 Satoh #; 0303L410

Site: 114 Uberty Street, 12th Fleer. New York. NY I

SUMMARY OF ANALYTICAL RESULTS - DUST WIPE

Sample # Description/ Location Area In Inches Lead Lab# (LxW) Concentration Client's Sample (ui/ft2) aesasBBSSBSssaaass =:

29 Lead Wipe/ 3rd Floor/ Kitchen/ Counter Top 12x12 <9 3440 29

30 Lead Wipe/ 3rd Floor/ South West Bathroom/ West Wall/ 12x12 <9 3441 Lower Left 30

31 FIELD BLANK <9/Wipe 3442 31

32 FIELD BLANK <9/ Wipe 3443 32

sample Analygla By. Atomic Absorption Spectrometry (AAS) using an air-ece’ylere flame with baekeround correction. Method of SawBle Preparation and Analysis All samples were prepared and analyzed in accordance with the HUO "Guidelines for the Evaluation and Conirol of Lead Baaed Paint HaEartioue in Mousing" Appendix 14.2 and the Environmental Protection Agency Method EPA 8W946-3060/7420.

Gulam Machhiwala Collected By: Petar Koelowsky Laboratory Director Analyzed By; Madell Collins

Minimum Dactection Limit » <20 ug/ft2 HUD "Guidallaes for the Evaluation and Conirol of Leed-Baaed Palm Hazardous In Housina' 06/95; define the clearance standerda, based on wipe sampling are; ‘40 ug/n? for floors; *250 U9/ft2 fo' Interior window 3 (Is; *400 ug/ft2 for window and exterior concrete or ot/isr rough

Page 8 of 8

U/Oi 'd 953 'ON C002’£ 'HcV

CITY_DEP_WORBY_CANNATA_SUBP_000006021

NYC-WTC_000186854

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NYC-WTC_000186854Source: NYC Law Department, mirrored locally

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