NYC-WTC_000200140

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: 08-21-02

CLIENT: Taylor Environmental Group, Inc.

PROJECT NAME: SCA/Stuyvesant HS 4th Floor

PROJECT NUMBER: M477-15217/29881

SAMPLED BY: Client

SAMPLE DATE 08-20-02 DATE RECEIVED: 08-20-02 DATE ANALYZED: 08-20-02

SAMPLE MEDIA: Air Samples ANALYSIS REQUIRED: Method NIOSH 7082

ANALYSIS RESULTS

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

4-Ll 21336 4th Floor Corridor @ Rm 440 <1.3 1.3

4-L2 21336 Rm 450 Robotics Conyer <1.3 1.3

4-L3 21336 4th Floor Corridor @ Top of Esc. West Stair <1.3 1.3

4-L4 21336 Rm 411 Computer Rm <1.3 1.3

4-L5 21336 4th Floor Corridor @ East Stair Rm 401/402 <1.4 1.4 FBI 21336 Field Blank - NO FILTER

FB2 21336 Field Blank <1.5 ug 1.5 ug

NOTE 1: THE REPORTING LIMIT (RL) IS 3.0 ug 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 pg/m’ and a permissible exposure level (PEL) of 50 pg/m’ for personal samples. NOTE 3: Blank units are in pg

CITY_21MC100_011273988

NYC-WTC_000200141