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 II - Environmental Community Monitoring Plan 133-135 Greenwich & 21-23 Thames Streets Airtek Project 05-0701— Rev 2 September 16, 2005
Attachment A
Table 2- Data Reference Levels for Community Monitoring
Analyte Target Air Quality Levels EPA Site Specific Trigger See Note 1 Levels — See Note 2 Metals Antimony 5 ug/m3 14 ug/m3 Barium 5 ug/m3 5 ug/m3 Beryllium 0.02u m3 0.2u m3 Cadmium 0.04 ug/m3 2 ug/m3 Chromium — See Note 3 0.6 ug/m3 60 ug/m3 Chromium VI 0.6 ug/m3 Copper 10 ug/m3 100 ug/m3 Lead 1.5 ug/m3 5 ug/m3 Manganese 0.5 ug/m3 0.5 ug/m3 Mercury 0.3 ug/m3 3 ug/m3 Nickel 0.2u m3 28 ug/m3 Zinc 16 u m3 160 u m3 Particles and Dusts Asbestos 0.00028 f/cc (SEM PCMe 70 S/mm2 (TEM AHERA fibers) structures) Particulate PM-10 (24 hour 150 ug/m3 150 ug/m3 average) Particulate PM-2.5 (24 hour 40 ug/m3 65 ug/m3 average) Respirable Silica 10 ug/m3 10 ug/m3 (crystalline) Organics (semi-volatiles) Dioxins/Furans (2,3,7,8 — 0.00025 ng/m3 0.025 ng/m3 TCDD equiv.) PCB (total Aroclors) 0.12 ug/m3 12 ug/m3
PAH (benzo-a-pyrene 0.034 ug/m3 3.4 ug/m3 equivalent) Note 1: A rolling average after the first week of sampling, except for PM-10 and PM-2.5. Note 2: A 24-hour value. Note 3: If a chromium value is in excess of the Target Air Quality Level (0.6 ug/m3), this will result in a stoppage of work; and, that sample will be speciated for chromium VI to determine that its concentration does not exceed the USEPA Site Specific Trigger Level for chromium VI (0.6 ug/m3), and the appropriate actions pertaining to an exceedance of the USEPA Site Specific Trigger Levelfor chromium IV will continue to be conducted.
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NYC-WTC 000134241
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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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