Comments on 114 Liberty cleaning and monitoring documentation, February 2003

NYC 9/11 Public Portal Document

of items to be disposed is not required. In lieu of disposal as ACM waste, larger items may be cleaned and disposed as non-regulated waste with prior approval by the Department. [MUST STIPULATE NON-POROUS MATERIALS]

c) Built-in items shall be disassembled, removed, and stored in a central location prior to the initiation of this contract by the resident/owner. [A CENTRAL LOCATION WITHIN EACH APARTMENT OR ONE CENTRAL LOCATION WITHIN THE BUILDING? WILL THE CONTRACTOR BE REQUIRED I O CLEAN THESE ITEMS FOR YOU?] The components of the built-in cabinets shall be wet wiped, HEPA vacuumed, and stored within each unit in a designated staging area for these items. [HOW WILL THEY ENSURE THAT THESE DON’T GET RE-CONTAMINATED DURING THE ABATEMENT? WILL THEY DO ANY TESTING TO VERIFY THAT THEY ARE CLEAN?] The contractor shall not be responsible for removing or disassembling other built-in items that may be present. Built-in items shall be cleaned in place using wet wiping and HEPA vacuuming techniques.

d) Kitchen stoves shall be wet wiped and HEPA vacuumed, and shall remain in the units. All other appliances shall be removed and disposed. The surfaces beneath the appliances shall be cleaned in accordance with procedures specified in this scope of work whenever possible, without causing damage to cabinets or appliances. [DOES THIS INCLUDE WASHERS, DRYERS, HOT WATER HEATERS, ETC., OR JUST KITCHEN APPLIANCES?]

(19) All equipment used for cleaning activities shall be vacuumed and/or wet wiped prior to removal from the work area.

(20) The project monitor shall perform a thorough visual inspection to verify the absence of visual dust accumulations. Additional clean-up procedures shall be performed where visible dust is observed.

(21) Upon successful visual inspection, the work area shall be isolated from the remainder of the work site pending clearance monitoring. Clearance monitoring shall be performed after completion of all clean up activities at the work site. [DOES THIS MEAN THEY ARE GOING TO CLEAR THE BUILDING ALL AT THE SAME TIME? IF SO, THIS IS A GOOD THING.]

(22) The Technician(s) shall perform clearance sampling after the area is free of dust accumulations as determined by the Project Monitor. The apartment will be re-cleaned and retested if the clearance criteria are not achieved. The Contractor is responsible for the costs of re-cleaning associated with 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 [SHOULD ALSO STATE HOW MANY SAMPLES]:

Parameter Clearance Level Note Asbestos in air 0.0009 free PCMe Primary clearance level Lead in settled dust <25 pg/tf Primary clearance level Dioxin in settled dust <4ng/m^ Primary clearance level Fibrous glass in air <0.01 free Secondary clearance level Crystalline silica in air 1 pg/m^ Secondary clearance level PAHs in settled dust <0.3 mg/m^ Primary clearance level

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