Law Department notice on WTC document preservation, Oct 2001

NYC 9/11 Public Portal Document

Basement

Elevator Shaft/Compactor Room. Test; 4A- Industrial HEPA-filtered vacuum, AFD. Soil floor in elevator shaft, concrete floor in compactor room. Cinderblock walls, exposed floor joists.

Commercial Units (Non-Stutfy)

Lemongrass Grill. Test; 4A-Industrial HEPA-filtered vacuum, AFD. Test 4D- A/C Duct Cleaning. This 3,500 sq. ft. unit has two floors. The first floor is at street level with entrances from both Liberty and Cedar Streets. The lower level (basement) was used for food preparation and storage. Gypsum ceilings and hard wood floors are present throughout the dining area. Wood floor joists from the first floor constitute the basement ceiling. The floor is concrete. The dining area is decorated with typical Thai accents consisting of bamboo and thatch. Grills, ovens, refngerators, tables, chairs and a bar are on the first floor. The basement contains a walk-in refiigerator, freezers, preparation table, a dishwasher and dry good storage. The establishment’s HVAC system is suspended from the ceiling of the first floor. All exterior windows facing the WTC were blown inward, depositing significant amounts of dust on all surfaces of the first fioor. Minimal dust was present in the basement. Prior to cleaning, all tables, chairs, containerized food and accent decorations were disposed. Restaurant equipment including woks, utensils, pots, pans and flatware were vacuumed and washed.

The Food Exchange. Test; 4A- Industrial HEPA-filtered vacuum, AFD. Test 4D- A/C Duct Cleaning. This 5,000 sq. ft. unit has three floors. The first floor is at street level with entrances from both Liberty and Cedar Streets. This floor was used for food service and customer dining. The lower level (basement) was used for food preparation and storage. The third level (sub­ basement) was used for storage of restaurant equipment. Ceramic tile covers the floor area in both the dining room and the basement. The floor of the sub-basement is packed soil. All exterior windows had been blown inward depositing significant amounts of dust on all surface areas of the first floor. Minimal dust was present in the basement. The first floor ceiling by the Liberty Street entrance is made of gypsum board. The ceiling on the Cedar Street entrance consists of suspended acoustical tile covered with a decorative tin facing. Above the suspended ceiling is a two foot void space that houses the HVAC system for the establishment. The basement ceiling is a suspended fibrous tile ceiling. The void space above both suspended ceilings and the gypsum ceiling contained both WTC-related and non-WTC-related dust. Asbestos pipe insulation was present in the void space of the basement. Grills, refrigerators, tables and chairs are present on the first floor. The basement contains walk-in refngerators, preparation tables, stoves, dishwashing areas and dry good storage. Prior to cleaning, all open and bulk stored food; fibrous ceiling tiles in the basement; and wrap insulation that had surrounded the HVAC systems were disposed of. The HVAC system is located in the void space above the dining room ceiling.

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NYC-WTC_000145174