US EPA Region 2 letter dated November 15, 2005, confirming completion of environmental review for abatement plans at 133-135 Greenwich Street.
NYC-WTC_000134132–000134414
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Part I: Work Plan — Decontamination/Deconstruction 133-135 Greenwich Street and 21-23 Thames Street Airtek Project 05-0701— Rev 4 September 29, 2005
Antimony 250 ug/m3 Barium 250 ug/m3 Beryllium 1.0 ug/m3 Cadmium 5.0 ug/m3 Chromium (Ill) 250 ug/m3 Copper 500 ug/m3 Lead 25 ug/m3 Manganese 100 ug/m3 Mercury 12.5 ug/m3 Nickel 50 ug/m3 Zinc 1,000 ug/m3
5 inside work area (IWA) samples will be collected from each floor. 5 outside work area (OWA) for ACM will be collected from areas outside each floor (roof, exterior, etc.) of the subject buildings. In addition, 5 IWA samples for metals will be collected from each floor. All samples will be collected using aggressive sampling techniques in compliance with Title 15 clearance sampling criteria. All clearance samples will be run on all floors simultaneously. Details on sampling methodologies are included in the ECAMP document (submittal Part II).
7.0 Abatement Phase
7.1 Part I - Exterior Cleaning:
The exterior of the building was decontaminated as a part of the NYC DEP Building Exterior Cleaning Program following 9/11/01. Airtek's visual inspection of the fagade indicates that it is advisable to conduct low-pressure power washing prior to initializing demolition activities. The exterior of the building will be cleaned in accordance with the NYC DEP WTC Dust/Residue Roof & Façade Cleaning Procedures included in Attachment I.
Building fagade clean-up via low pressure washing:
1. At grade level, a work place/restricted area shall be established. This area shall be plasticized with one (1) layer of 6-mil plastic from one (1) foot up the building exterior wall to the edge of the sidewalk, rear easement and out to the building line. Wood shall be placed under the plastic to create a large catch basin for the water run-off. It shall be cordoned off with clearly identifiable asbestos hazard tape.
2. A low pressure washing technique, moving from top to bottom, shall be employed to minimize water bounce-back. A boomlift will be used for the wash-down. The fagade and roof shall be washed with a low-pressure wash not to exceed 250 psi.
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NYC-WTC 000134137
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Health and safety plan for Phase I deconstruction at 133-135 Greenwich Street and 21-23 Thames Street dated June 8, 2005.
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14 shared non-person entities · 1 shared topics · similarity 0.965
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33 shared non-person entities · similarity 0.964
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