56 NASSAU STREET BIN: 1001109 33 Maiden Lane, 29-39 Maiden Lane/32-40 John St/ 1 Federal Reserve Plaza

NYC 9/11 Public Portal Document

Sep-21-01 09:37 P.03

Page 2 of 3 IBM Corporation Office Facility

O&M CLEAN-UP OF SUSPECT ACM DEBRIS 33 MAIDEN LANE 2, 3'° and S"' Floor

TEM air samples collected within each floor did not identify any elevated levels of airborne asbestos. Visual examination of the interior spaces did not identify significa t accumulations of dust or suspect debris. Collection of bulk material samples identified a small quantity, approximately 3 SF, of ACM debris on the carpet in the 3' Floor ofThe area. It appears this material was either tracked in or brought in from outside the bull ing. Additional bulk samples were collected within the 2, 3d and 5th Floor office areas ventilation fresh air intakes. With the exception of the one sample identified above, LM analysis of bulk samples did not identify asbestos above the 1% threshold for classification as ACM. Due to the identification of ACM in the one bulk sample, IBM Corp., has requested that an O&M cleanup be performed within the entire 3' Floor leased space. Although bulk sampling conducted within the 2nd and 5'' Floor did not identify the presence of asbestos, IBM Corp has requested that an O&M cleaning be performed within these spaces as well. Each floor consists of approximately 14,000 SF of office space. TheT

project will include HEPA vacuuming of all floor surfaces and wet-wiping of all horizontal hard surfaces (i.e. desks, file cabinets, sills). At the completion of the clean-up, static TEM air samples will be collected within each floor. No abatement of installed ACM will;be performed as part of this project.

We propose to do the following:

1. Building/equipment surfaces will be cleaned using HEPA vacuums or wet wiping, Loose material on floors shall be wet thoroughly with amended water prior to disturbance and either placed directly into labeled bags or HEPA vacuums.

2. Adequate signage shall be posted around the affected area. A curtained doorway shall be installed at the main entrance to each office area.

3. Workers will double suit prior to entering the affected area. Prior to leaving the affected area the worker shall remove the outer suit in the airlock, don a new outer suit, and proceed directly to a remote shower facility.

ENVIRONMENTAL CONSULTING AND TRAINING

NYC-WTC 000097965