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Document / 45 pages

Air monitoring report, 345 South End Avenue, Dec 2001

Machine-extracted title · confidence 95%

Air monitoring report for 345 South End Avenue buildings conducted in December 2001 showing TEM results.

NYC-WTC_000121138–000121182

Folder label: “345 SOUTH END AVENUE Block: 16 Lot: 100 BIN: Parking Garage

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NYC 9/11 Public Portal Document

jig ENVIRONMENTAL The First Choice for Environinental Tcsting & Consulting INCORPORATED

December 10, 2001

Gateway Plaza Management Corporation 375 South End Avenue New York, New York 10280

Subject: Random Air Sampling-Ambient Air Monitoring: Gateway Plaza Buildings Sampling Date(s): November 29, 30, December 3, 4, 5, & 6

Gentlemen:

200, Please fmd enclosed the air monitoring report performed at the above referenced address in the 100, conducted via Transmission Electron Microscopy (TEM) analysis at the 300, 400 & 500. Air sampling was request of the owner.

Microscopy (TEM) ATC Associates (ELAP #10879) analyzed the samples using the Transmission Electron The results indicated that the areas achieved the acceptance criteria below <70 Methodology. structures per mm2 set by the federal regulations. (Please See Attached TEM Report) surrounding areas. EP.4 According to the EPA, "In evaluating data from the World Trade Center and the Eniergenc.r Response Act, to evaluate is using a protecttve standard under AHERA. the Asbestos Hazard a vu1 stringent standard that is used to the risk from asbestos in the outdoor- and indoor air- This is school budding after asbestos has been removed or abated It is determine whether children mar re-enter a exposure EPA has chosen to use this standard, because it is the most based on assumptions oflong-term even though it is unlike/i that the public will be exposed to asbestos front the stringent and protective. I4 orld Trade Center site for extended periods of tine

equipment through which air in the To determine asbestos levels. air filters are collected from monuoring school building has passed and viewed through a microscope The number of structures - material that has or to it - is their counted The measurements must be 70 or fewer .structures per square asbestos fibers on millimeter before children are allowed inside Occupational Safer and Health There is also a federal standard for asbestos exposure under OSHA. the Act. which is used to protect workers on-the-job Tire standard is I fiber per- cubic centimeter averac.ed over an eight -hour den To he as protecttve as possible. EPA is using the school ;'c-entns' standard in tests around the World Trade Center Asshestos Levels above 70 sn-uctur'es per square millimeter do NOT imp/c an ttnniediare health threat becomes a health concern when high coreentrationc of ashestrs Iihers arc inhaled over -ci long exposure period /l/nets is ven unlike/c' to result from a single. high-level exposure_ or Irom a .short period of exposure to lower jewels State Department The air samples were collected by Americo Rodriguez Jr ((License ttAli 8i-0' l60)1 'I

of Labor Project Monitor

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NYC-WTC_000121138Source: NYC Law Department, mirrored locally

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