NYC-WTC_000232633

NYC 9/11 Public Portal Document

ATC ASSOCIATES, INC 104 E 2Sth Street, 10th Floor New York, NY 10010 Tel. 212-353-8280 Fax 212-353-8306

REPORT DATE: 08-12-02

CLIENT: Taylor Environmental Group, Inc.

PROJECT NAME: SCA/Stuyvesant HS 1st Floor

PROJECT NUMBER: M477-15217/29881

SAMPLED BY: Client

SAMPLE DATE 08-09-02 DATE RECEIVED: 08-09-02 DATE ANALYZED: 08-09-02

SAMPLE MEDIA: Air Samples ANALYSIS REQUIRED: Method NIOSH 7082

ANALYSIS RESULTS

SAMPLE BATCH SAMPLE DESCRIPTION LEAD DETECTION ID NO. CONCENTRATION LIMIT (Pg/m’) (Pg/m’)

1 21043 Rm 107 at Entrance to Corridor <1.4 1.4 2 21043 Rm 150 at Entrance to Corridor <1.4 1.4 3 21043 Rm 107 at Entrance to Corridor <1.6 1.6 4 21043 Rm 150 at Entrance to Corridor <1.6 1.6 5 21043 Rm 211A at Entrance to Corridor <1.6 1.6 6 21043 Field Blank <1-5 ng 1.5 ng 7 21043 Field Blank <1.5 ng 1.5 ng

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

CITY_21MC100_010234607

NYC-WTC_000232633