345 CHAMBERS STREET; Block: 16; Stuyvesant HS

NYC 9/11 Public Portal Document

All- JJUk—k A.r 3, 104 E 25th Street, 10th Floor New York, NY 10010 Tel. 212-353-8280 Fax 212-353-8306

REPORT DATE: 07-25-02

CLIENT: Taylor Environmental Group, Inc.

PROJECT NAME: SCA!Stuyvesant HS 345 Chambers Street, NY

PROJECT NUMBER: M477-15217/29881

SAMPLED BY: Client

SAMPLE DATE: 07-24-02 DATE RECEIVED: 07-24-02 DATE ANALYZED: 07-24-02

SAMPLE MEDL4: Dust Wipe Sample ANALYSIS REQUIRED: Method EPA 3050/7420

ANALYSIS RESUT.

SAMPLE DESCRIPTION LEAD DETECTION SAM?LE BATCH ID NO. CONCENTRATION LIMIT '. (µg/ftl) ( 1 )

10-01 20613 10 Floor O/S Rm 1010 HVAC I West Supply <9.0 9.0

10 Floor O/ S Rm 1010 HVAC 1 East Supply 37.4 9.0 10-02 20613 10 Floor O/S Rm 1007 HVAC 1 East Supply <9.0 9.0 10-03 20613 20613 10 Floor O/S Rrn 1010 HVAC 1Return Plenum <'4.5 4.5 10-04 10 Floor O!S Rm 1010 HVAC 1Rcturn Plenum 5.5 4.5 10-05 20613

I 10-06

FB-1 20613

20613 10 Floor O/S Rm 1018 HVAC Return Dact

Field Blank 34.7

<9.0 µg 9.0 µo 9.0

1 FB-2 20613 Field Blank <9.0 µg 9.0 ug

NOTE 1: THE REPORTING LIMIT (RL) IS 18.0 µg 1 NOTE 2: HUD Guid_lincs for final cicsrsnc dust wipe samples Floor 40 ugf fc. Window Sills Windowvrclls 400 µti ft', R`aCTIO: sirfac^s 800 µg/P..' 250

NOTE 3: Blan1: unic are in gg

1 NYC-WTC 000106894