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Lead dust wipe analysis, M833 site, May 2002

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Laboratory results for lead concentration in dust wipe samples collected on May 25, 2002.

NYC-WTC_000180133–000180134
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NYC 9/11 Public Portal Document

ATC ASSOCIATES, INC 104 E 25th Street, 10th Floor New York, NY 10010 Tel. 212-353-8280 Fax 212-353-8306

REPORT DATE: 05-30-02

CLIENT: NYC BOE

PROJECT ADDRESS: M833 / 100 Trinity Place New York, NY 10006

PROJECT NO: 41617-0563

SAMPLED BY: C. Mathew

SAMPLE DATE: 05-25-02 DATE RECEIVED: 05-25-02 DATE ANALYZED: 05-25-02

SAMPLE MEDIA: Dust Wipe Sample ANALYSIS REQUIRED: Method EPA 3050/7420

ANALYSIS RESULTS

SAMPLE BATCH SAMPLE DESCRIPTION LEAD DETECnON ID NO. CONCENTRATION LIMIT (gg«O (W’F)

01 9829 Window Sill North Floor Office 904 <2.6 2.6

02 9829 Floor 9th Floor Hallway by Elevator <9.0 9.0

03 9829 Floor Cafeteria by Entrance <9.0 9.0

04 9829 Floor 7th Floor Hallway by Rm 707 <9.0 9.0

05 9829 Floor 6th Floor Classroom 606 <9.0 9.0

06 9829 Floor Sth Floor Hallway by 505 <9.0 9.0

07 9829 Floor 4th Floor Classroom 407 <9.0 9.0

08 9829 Floor 3rd Floor Halway by Rm 313 <9.0 90

09 9829 Floor Main Entrance Lobby by Rm 105 <9.0 9.0

10 9829 Floor Auditorium 1 by Middle of Right Isle <9.0 9.0

11 9829 Blank <9.0 gg 9.0 gg

NOTE 1: THE REPORTING LIMIT (RL) IS 18.0 gg NOTE 2: HUD Guidelines for final clearance dust wipe samples: Floor 40 Window sills 250 pg/fl’, Window wells 400 pg/'ft’, Exterior surfaces 800 pg/ft’. NOTES: Blank units are in pg

CONFIDENTIAL, CITY_21MC100_003463352 SUBJECT TO PROTECTIVE ORDER NO. 2, SEPT. 2008

NYC-WTC_000180133

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NYC-WTC_000180133Source: NYC Law Department, mirrored locally

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