NYC-WTC_000232249

NYC 9/11 Public Portal Document

3.0 SAMPLING PHASES Sampling phases will consist of the following segments; Background, Phase I - Asbestos and COPC Abatement, and Phase II - Structural Deconstruction. General descriptions of the work included in each phase are presented below.

3.1 Background

The background ambient air sampling period will consist of two weeks (14 consecutive calendar days) of monitoring performed prior to the start of Phase I abatement activities. Samples will be collected using all seven (7) stations in the monitoring network. Target parameters and the frequency of sample collection will follow measures presented in Sections 4 and 6, respectively.

3.2 Phase I - Asbestos and COPC Abatement

Phase I of the Deconstnxction Project includes the cleaning and removal of all interior surfaces and non-structural elements within the building under containment. Phase 11 - Structural Deconstruction includes the structural deconstruction of the remaining cleaned steel, large MEP, concrete, and curtain wall as well as cleaning and removal of exterior and roof, and roof equipment. During the Phase I cleanup and abatement, a minimum buffer zone of two floors, will be maintained between the active abatement (Phase I) area and the exterior abatement/structural demolition (Phase II) portion of the project. The proposed Phase I cleanup and abatement will be conducted so that the Building can be safely deconstructed to allow for redevelopment of the WTC Site. This Phase I project entails:

• The use of a licensed abatement contractor to perform Phase I work within a negative pressure enclosed work area;

• Work includes the removal and disposal of soft strip/interior gut items and general area cleanup of dust and debris;

• Removal and disposal of installed porous and certain non-porous building materials and components. Work includes removal and disposal of all interior non-structural elements including but not limited to ceiling tiles, carpet, gypsum wall board, mechanical, electrical and plumbing, wiring/cabling, fiberglass insulation, doors, fireproofing, toilet fixtures;

• Cleaning and salvage of certain installed non-porous building equipment and components contaminated by dust and debris;

• Removal of building materials containing asbestos which were present in the Building prior to September ll^**, 2001 (referred to herein as “ACBM”), primarily within the Building interior; and

Erection of the crane and hoist.

L2005-149 (051205) 1 5023623.2

C ITY_D E P_W0 RB Y_C AN N ATA_SU B P_000114889

NYC-WTC_000232258