NYC-WTC_000232487

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: 07-29-02

CLIENT: Taylor Environmental Group, Inc.

PROJECT NAME: SCA/Stuyvesant HS 3rd, Sth and 9th Floors

PROJECT NUMBER: M477-15217/29881

SAMPLED BY: Client

SAMPLE DATE 07-27-02 DATE RECEIVED: 07-27-02 DATE ANALYZED: 07-27-02

SAMPLE MEDIA: Air Samples ANALYSIS REQUIRED: Method NIOSH 7082

ANALYSTS RESULTS

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

01 20704 Rm 802A at Entrance <3.1 3.1

02 20704 Rm 807 at Entrance <3.1 3.1

03 20704 Rm 817 at Entrance <3.1 3.1 04 20704 Rm 911 at Entrance <3.1 3.1 05 20704 Rm 329 at Entrance <3.1 3.1

06 20704 Rm 802A at Entrance <5.0 5.0

07 20704 Rm 817 at Entrance <5.0 5.0

08 20704 Rm 911 at Entrance <4.2 4.2

09 20704 Rm 329 at Entrance <4.7 4.7

FB-10 20704 Field Blank <1.5 Hg 1-5 ng

FB-11 20704 Field Blank <1-5 ng 1-5 ng

NOTE I ; 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/ni’ for personal samples. NOTE 3: Blank units are in ng

CITY_21MC100_010245467

NYC-WTC_000232487