NYC-WTC_000200230

NYC 9/11 Public Portal Document

4

AMBIENT AIR AND DUST SAMPUNG PROTOCOL for PS/IS89M. Page 7 of 9

In the event that unsatisfactory results are obtained ATC shall immediately notify BOE representative Mr. Mohamed Hemida, the UFT and the PA consultant. BOE shall notify the school principal, the school custodian and the plant manager. The said parties will assess the situation and implement the appropriate response action(s) immediately.

The following actions are to be implemented;

1. Perform general dust clean up of all areas/classrooms with unsatisfactory results. 2. Lead specific cleaner shall be utilized. 3. Re-test said areas following clean up. 4. Floor mats and/or other dust control devises shall be placed at points of entry.

Actions 1.2 and 3 shall be repeated until satisfactory results are obtained.

SILICA

• First floor hallway outside cafeteria - 2 samples.

• Cafeteria - one sample. ij

• Gymnasium - one sample.

• Auditorium - one sample.

• Classroom with north side unit ventilators - one sample immediately after the last class.

\I • Classroom with east side unit ventilators - one sample immediately after the last class.

• Classroom with south side unit ventilators - one sample immediately after the last class.

• Second floor Hallways south end - one sample immediately after the last class.

• Fourth floor Hallways south end - one sample immediately after the last class.

All air samples collected shall be analyzed utilizing the NIOSH 7500 method for respirable silica.

Since, there are no regulatory standards for Mineral Dust in non-industrial buildings, such as offices and schools at this time, the OSHA standard 1910.1000 TABLE Z-3 shall be utilized (per the request of PA consultant).

Results from samples collected shall be reported to BOE, UFT, School Principal and the PA consultant within 72 hours from the collection day.

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NYC-WTC_000200236