345 CHAMBERS STREET; Block: 16; Stuyvesant HS

NYC 9/11 Public Portal Document

ttr UL1A1.E5,INC 104 E 25th Street, 10th Floor New York,NY 10010 TeL 2X2-353-8280 1 Fax 212-353-8306

1 1 REPORT DATE: 07-3I-02

1 CLIENT.

PROJECT NAME: Taylor Environmental Group, Inc.

SCA/Stuyvesant HS

1 PROJECT NCMBER: 345 Chambers Street, NY

M477-15217/29881

1 SAMPLED BY:

SAMPLE DATE: Client

07-30-02

1 DATE RECEIVED: DATE ANALYZED: 07-31-02 07-31-02

SAMPLE MEDIA: Dust Wipe Sample 1 ANALYSIS REQUIRED: Method EPA 3050/7420 C

1 ANALYSIS RESULTS

SAMPLE BATCH SAMPLE DESCRIPTION LEAD DETECTION ID NO. CONCENTRATION LIMIT 1 (Fig') (j.g/ft2)

LW-01 1 LW-02 20792

20792 7th Floor Corridor West Supply O/S C728

7ht Floor Corridor Return Adj. C721 <9.0

<9.0 9.0

9.0 LW-03 20792 7th Floor Corridor Easrt Supply Adj. 715 1 LW 04 20792 7th Floor Corridor East Supply Adj. 705 <9.0

21.6 9.0

9.0

1 FBL-1

FBL-2 20792

20792 Field Blank

Field Blank <9.0 µg

<9.0 Ng 9.0 }tg

9.0 µg

1 I NOTE 1: THE REPORTING LIMIT (RL) IS 13.0 µg NOTE 2:

1 HUD Guidelines for final clearance dust wipe samples: Floor 40 µgrft'. Window sills 250 µeft1, Window wells 400 µg/f 2. Exterior surfaces 800 µg/ft=. NOTE 3: Blank units arc in µg

1 1 NYC-WTC 000106909