Updated WTC cleanup and monitoring SOWs, July 2002

NYC 9/11 Public Portal Document

h. Electrical outlets will be vacuumed. i. Window air conditioners will be vacuumed then removed from their position and vacuumed internally. Filters will be HEPA vacuumed and reinstalled. Air conditioners will be reinstalled after cleaning. j- Intake/discharge registers of HVAC systems (if present) will be removed/cleaned. The first foot of duct work will also be vacuumed, then the register will be reinstalled and covered with plastic. k. Appliances such as refrigerators and stoves will be cleaned and moved. The floor footprint of the appliances will be cleaned and appBance will he reinstalled in its onginal position. 1. Refiigerator cooling tubes will be brushed ai^phcuumed. m. Stove storage drawers will be vacuumed if present. Stove cook tops will beopenedsand vacuumed. Stove exhaust fan filters will be cleaned , n. The first foot of all exhaust duct work (including stove, dryer and bathiri Its) will be vacuumed. Exhaust fans will be vacuumed and wiped. o. Closet floors will be vacuumed. P- Solid objects (electrical equipment, exercise equipment, etc,) will be wet wiped, moved to allow cleaning of the underlying surface and will he returned to their original location. q- Dishwashers toe plates will be^^BBv^MHMMoor beneath the appliance will be cleaned. r. Baseboard heaters will be cleaned. PiStective covers on finned radiant heaters and baseboard heaters will he removed j^xpose 1|^ elements. Fins are to be brushed and vacuumed to remove dUSt. s. All cleaning equipment will be viBbumed alBor wet wiped for use on the residence.

4. HEPA air filtration devices (AFDs) will fun continuously during all cleaning activities as appropriate given site conditions. A standard 1200 cfin device shall be installed per 36,000 cubic ffeet-

®^^I^^M^tti:^®^’estoatopervisors shall be present at each work place.

Ad^aning Checl eveloped) will be completed by the supervisor at the completion ^the cleaning.

A thorough visual inspection will be conducted by the Project Monitor to verify the absence of visible dust accumulations. Additional clean-up procedures shall be performed where visible dust is nhservld ■

Airsampiing shall be performed by the Air Sampling Technician after the area is free of dust accumulations as determined by the Project Monitor. The apartment of will recleaned and retested if the clean-up criteria of 0.0009 fibers/cc (PCME measured by TEM) is not achieved or if determined necessary by EPA. This clean-up criteria may be reevaluated and revised, if determined necessary based on field conditions and analytical limitations.

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