345 CHAMBERS STREET; Block: 16; Stuyvesant HS

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: 07-15-02

CLIENT: Taylor Environmental Group, Inc.

PROJECT NAME SCA/Stuyvesant HS 345 Chambers St., 10th Floor SAMPLED BY: Client

SAMPLE DATE 07-14-02 DATE RECEIVED: 07-1S-02 DATE ANALYZED: 07-15-02

SAMPLE MEDIA: Air Samples ANALYSIS REQUIRED: Method NIOSH 7082

ANALYSIS RESULTS

SAMPLE BATCH SAMPLE DESCRIPTION LEAD DETECTION ID NO. CONCENTRATION LIMIT (ug/m') (E'%nt) L01 20361 Maria Ortega SS+1 P11 <3.7 3.7 L02 20361 KleverCalle SS# PII <3.7 3.7 L03 20361 Pablo Orgiles SS# PII <3.7 3.7 L04 20361 Ramirez Zay SSr} P <6.9 6.9 LOS 20361 Maria Ortega SSA PII <5.1 5.1 L06 20361 Klcvcr Calle SS#a! P11 <3.8 3.8 L07 20361 Pablo Orgiles SS# P11 <5.1 5.1 L08 20361 Ramirez Zay SS# PII <5.1 5.1 FBI 20361 Field Blank <1.5 ug 1.5 µg FB2 20361 Field Blank <1.5 µg 1.5 µg

NOTE 1 THE REPORTING LIMIT (RL) IS 3.0 µg NOTE 2: At the present time there arc no regulatory Ievclb or requirements for indoor airborne lead in area samples. However, OSHA has established an action level of 30 pgtm' and a permissible exposure level (PEL) of 50 µg/m for personal samples. NOTE 3: Blank units are in µg

NYC-WTC 000106930