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EPA review letter, 133-135 Greenwich Street

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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
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NYC 9/11 Public Portal Document

Part 11- Environmental Community Monitoring Plan 133-135 Greenwich & 21-23 Thames Streets Airtek Project 05-0701— Rev 2 September 16, 2005

Attachment A

Table 1— Community Air Monitoring

Location Parameter(s) Sample Analysis Method Comment Frequency Site Area Mercury Each work day Lumex, portable Lumex results mercury analyzer are real-time data logged Site Area Particulate Continuous Visual Observation Visual (Visible dust during working Notations on emissions) shifts site log Site Perimeter- Particulate Daily Laser dispersion The Met One E- three fixed PM-2.5, Real time analysis, BAM (with a locations listed PM-10 E-BAM heated inlet to address below condensible emissions)will be utilized for continuous PM 10 and PM2.5 monitoring Site perimeter- Particulate Each work day Met One BAM 1020 Comparison one of the fixed PM-2.5, data for E- locations PM-10 BAMs. below. 1. Waste load- 1. Asbestos ACM each 1. TEM Sampling out area on the work shift, and durations may Southwest each off-day. be modified corner of the 2. Silica Daily 2. XRD based on Site Buildings 3. Metals Daily 3. ICP/MS Conditions. See 4. Total Daily 4. Microbalance footnote 1 2. Roof of HS Dust below Auditorium 5. Organics Organics — See 5. PCB (EPA 3. East end of footnote 2 TO-7A) Thames below Dioxin (EPA Sidewalk TO-9A Bridge (mod)) and PAH (EPA TO-13A Field Blanks All Analytes In accordance with QAPP and Published Methodology

NYC-WTC 000134238

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NYC-WTC_000134238Source: NYC Law Department, mirrored locally

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