Final Report Volume 1, WTC Unoccupied Building Monitoring, 125 Cedar

NYC 9/11 Public Portal Document

Final Report 125 Cedar Street,NYC,NY

• • Lead, EPA Method SW-846-6010B • PAHs, ASTM-6661-01, EPA Method SW-846-8270C • Dioxin, ASTM-6661-01, EPA Method SW-846-8290 • Mercury, EPA Method SW-846-7471A

SCOPE OF WORK

All work performed was conducted in compliance with general industry practices, applicable relevant and appropriate regulations, including, but not limited to the USEPA, USDOL, NYSDOL, NYSDEC, NYCDEP, NYCDOS, and NYCDOH. The scope of work entailed a thorough cleaning of all surfaces within each apartment unit, except as noted within the Project specifications. Cleaning entailed the use of water to mist material prior to cleaning without generating water accumulations. All waste was subsequently double bagged and appropriately labeled prior to disposal. On occasion, equipment that proved to be difficult to clean via wet wiping techniques (i.e.: electrical equipment, fm tube radiators, appliances, etc.) was cleaned by using low pressure compressed air to dislodge settled dust prior to cleaning.

• PROJECT DESCRIPTION

Work Sequence

The following lists the sequence of cleaning of surfaces:

■ Mobilized equipment and personnel to job site (ATC and Action). ■ Collected and analyzed background wipe samples (ATC). ■ Posted warning signs to establish regulated work areas (Action). ■ Constructed engineering controls per Contract Documents and current regulations (Action). ■ Performed pre-abatement inspection of Contractor engineering controls (ATC). ■ Collected ambient air samples to monitor airborne asbestos fiber levels (ATC). ■ Performed required clean-up of surfaces (Action). ■ Performed oversight of Contractor work practices (ATC) ■ Performed proper removal and disposal of generated waste from the work areas (Action). ■ Performed visual inspections to ensure no visible debris remaining in work areas (ATC). ■ Collected and analyzed final air clearance samples (ATC). ■ Collected and analyzed final wipe clearance samples (ATC). • ■ Disassembled and cleaned work area (Action).

ATC Project No. 15.22906.0002 Page 3

NYC-WTC 000129380