Preliminary scope of work document for cleaning 114 Liberty Street,

NYC 9/11 Public Portal Document

Cleaning Procedures For 114 Liberty Street failure to meet the clearance criteria. The clearance air monitoring criteria have been established by the USEPA for this clean up activity (WTC Vicinity). The clearance criteria are as follows: ■ asbestos in air 0.0009 fee PCMe Primary clearance level ■ lead in settled dust <25 gg/ft2 Primary clearance level ■ dioxin in settled dust <4 ng/m^ Primary clearance level ■ fibrous glass in air <0.01 f/cc Secondary clearance level ■ crystalline silica in air 0.5 pg/m^ Secondary clearance level ■ PAHs in settled dust <0.15 mg/m^ Secondary clearance level

(22) After successful clearance monitoring, isolation barriers shall be removed in accordance with the applicable requirements of Title 15, Chapter 1 of the RCNY. (23) The cleaning contractor is not responsible for damage or loss caused by the acts of parties not involved with the cleanup. Resident shall be responsible for the removal of any valuables. If such removal is not feasible, the resident shall notify the Project Monitor in writing (including original receipt, formal appraisal, or estimated value) as to the location, description and value of said item. (24) Disposal of all wastes generated during the cleaning shall be the responsibility of the contractor. All waste generated shall be treated as asbestos-containing material (ACM) with the exception of items that can be cleaned prior to disposal. As specified above, large items may be cleaned and disposed as non-regulated waste with prior authorization by the Department. Transportation and disposal of generated waste shall be in compliance with all applicable rules and regulations.

(25) All work shall be in compliance with all other applicable requirements of Title 15, Chapter 1 of the RCNY. (26) The following table contains special conditions and handling instructions for items in specific units. Items not specifically referenced in this table shall be handled in accordance with the procedures specified in this scope of work and in written documentation provided by residents via DEP.

Floor No. Action Item / Notables A partition/ barrier shall be installed at the damaged north wall._____________________ 4® A partition/ barrier shall be installed at the damaged north wall and ceiling.____________ 3"* Commercial space: The HVAC system, associated ductwork and suspended ceiling shall be removed and discarded.__________________________________________________ The HVAC system and associated ductwork, and stove exhaust ducts shall be removed and 1“ discarded.

(27) Time sheets shall be submitted to DEP on a weekly basis. (28) At the completion of work a final report shall be submitted to DEP. The final report shall include copies of the daily logs (activities and entry/exit logs), waste manifests, etc.

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NYC-WTC_000155603