Preliminary scope of work document for cleaning 114 Liberty Street,

NYC 9/11 Public Portal Document

December 17, 2002 114 LIBERTY STREET REMOVAL OF DUST, DEBRIS, AND CONTAMINATED MATERIALS

14 WORK AREA CLEARANCE

PART 1 - GENERAL

1.01 RELATED DOCUMENTS:

A. Visual inspection required as a prerequisite of air and wipe testing, is set forth in Section 13 Project Decontamination.

B. Air monitoring performed by the Owner during abatement work, and air and surface clearance criteria are described in Section 05 Air and Wpe Sampling.

1.02 CONTRACTOR RELEASE CRITERIA:

A. The Work Area is cleared when the Work Area is visually clean and all contaminants have been reduced to the levels specified in Section 05.

B. The Contractor is responsible for maintaining isolation of the work area until all abatement of dust and debris is complete, and/or the risk of cross contamination in the building has been eliminated.

C. Following work area clearance, the work areas must be positively pressurized to eliminate the risk of cross contamination from other floors which have either not yet been abated or are undergoing cleaning.

1.03 VISUAL INSPECTION:

A. Work of this Section will not begin until the visual inspection described in Section 13 Project Decontamination is complete and has been certiled by the Project Administrator.

1.04 AIR AND WIPE SAMPLING:

A. Work of this Section is described in Section 05.

1.05 LABORATORY TESTING:

A. Clearance samples shall be promptly submitted (either hand delivered or via overnight delivery) to an independent AIHA and/or ELAP Certified Laboratory for analysis. Verbal results shall be issued as soon as possible in order to minimize any possible delay in the progress of the Work. Verbal results shall be followed with a certificate of analysis.

PART 2- PRODUCTS (Not Applicable)

PART 3- EXECUTION (Not Applicable)

END OF SECTION 14

© AMBIENT GROUP, INC. - 2002 56 WORK AREA CLEARANCE

NYC-WTC 000155584