NYC-WTC_000200230

NYC 9/11 Public Portal Document

AMBIENT AIR AND DUST SAMPUNG PROTOCOL for PS/ISa9M. Pages of 9

• First floor (Throughout) - Additional minimum of five (5) samples within classrooms where present. One sample shall be collected within every Pre-K and Kindergarten classroom where present.

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

Second floor Classrooms - Additional minimum of five (5) samples within classrooms where present. One sample shall be collected within every Pre-K and Kindergarten classroom where present.

• Third floor Classrooms - Additional minimum of five (5) samples within classrooms where present. One sample shall be collected within every Pre-K and Kindergarten classroom where present

Fourth Floor Classrooms - Additional minimum of five (5) samples within classrooms where present. One sample shall be collected within every Pre-K and Kindergarten classroom where present.

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

• Outside Playground - three samples on playground surface after last class.

) • Exterior Building Entrances - one sample on ground at exterior of north and south entrances to the school.

Dust bulk samples will be collected at the aforementioned locations and analyzed via Polarized Light Microscopy (PLM). In the event that in any of the above locations there is not sufficient amount of dust for bulk sampling and/or analysis will be noted as Not Sufficient Amount of Material for Testing (NSAMT)

In the event that any of PLM analysis detects more than 1% by weight of fiberglass, ATG 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.

LEAD SURFACE DUST

• First floor hallway outside cafeteria - 2 samples. i • Cafeteria - one sample.

• Gymnasium - one sample.

• Auditorium - one sample.

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

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CITY_21MC100_003267274

NYC-WTC_000200234