NYC-WTC_000232624

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

15 20541 Rm 635 Inside Classroom Near Entrance to Corridor <3.7 3.7

16 20541 Rm 636 Inside Classroom Near Entrance to Corridor <3.7 3.7 17 20541 Rm 615 Inside Classroom Near Entrance to Corridor <3.7 3.7

18 20541 Field Blank <1.5 ng 1.5 Mg 19 20541 Field Blank <1.5 Mg 1.5 Mg

NOTE 1: THE REPORTING LIMIT (RL) IS 3.0 Mg 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

CERTIFICATION AND SIGNATURES

ANALYSIS PERFORMED BY:

REPORT PREPARED BY:

ATC certifies that this report is an accurate and authentic report of results obtained from the laboratory analysis.

QUALITY ASSURANCE COORDINATOR:

LABORATORY DIRECTOR:

ATC is accredited by the New York State Department of Health Environmental Laboratory Approval Program (ELAP) and by the American Industrial Hygiene Association (AIHA) to perform analysis of lead in paint, dust wipes, air and soil samples. (ELAP #10879), (AIHA #100229).

CITY_21MC100_010234512

NYC-WTC_000232625