NYC-WTC_000232614

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: 07-17-02

CLIENT: Taylor Environmental Group, Inc.

PROJECT NAME: SCA/Stuyvesant HS 345 Chambers St., 9th Floor SAMPLED BY: Client

SAMPLE DATE 07-16-02 DATE RECEIVED: 07-16-02 DATE ANALYZED: 07-16-02

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’)

01 20398 Rm 901 Inside Classroom Near Entrance to Corridor <3.1 3.1 02 20398 Rm 903 Inside Classroom Near Entrance to Corridor <3.1 3.1

03 20398 Rm 907 Inside Classroom Near Entrance to Corridor 3.1 04 20398 Rm 911 Inside Classroom Near Entrance to Corridor <3.1 3.1 05 20398 Rm 913 Inside Classroom Near Entrance to Corridor <3.1 3.1

06 20398 Rm 925 Inside Classroom Near Entrance to Corridor <2.5 2.5

07 20398 Rm 901 Inside Classroom Near Entrance to Corridor <3.3 3.3

08 20398 Rm 903 Inside Classroom Near Entrance to Corridor <3.3 3.3 09 20398 Rm 907 Inside Classroom Near Entrance to Corridor <3.3 3.3

10 20398 Rm 911 Inside Classroom Near Entrance to Corridor <3.4 3.4 11 20398 Rm 913 Inside Classroom Near Entrance to Corridor <3.4 3.4

12 20398 Field Blank <1.5 ng 1-5 ns 13 20398 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/m’ and a permissible exposure level (PEL) of 50 ng/m’ for personal samples. NOTE 3; Blank units arc in pg

CITY_21MC100_010234466

NYC-WTC_000232614