NYC-WTC_000234651

NYC 9/11 Public Portal Document

AMBIENT AIR AND DUST SAMPLING PROTOCOL for PS/IS89M. Page 4 of 8

In the event that real-time measurement(s) of TVOC inside the school is/are above the cited Target Guidelines (1 ppm), BOE will immediately notify the UFT, the school principal, the school custodian and the PA consultant. The said parties will assess the situation and implement the appropriate response action(s).

In the event that real-time measurement{s) of 0.5 ppm of TVOC are obtained inside the school BOE will notify the UFT, the school principal, the school custodian and the PA consultant. The said parties will assess the situation and implement the appropriate response action (s)

ADDITIONAL TESTING

In addition to the above, once per week, preferably on Thursday, sampling settled dust for fiberglass, lead, and silica; wipe sampling for dioxin and PCB and air sampling, for heavy metals, and TVOCs shall be performed as follows:

SETTLED FIBERGLASS

• First floor hallway outside cafeteria - 2 samples.

• Cafeteria - one sample.

• Gymnasium - one sample.

• Auditorium - one sample.

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

• 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 samples immediately after the last class.

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

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 detect more than 1 % by weight of fiberglass, BOE will immediately notify the UFT, the school principal, the school custodian and the PA consultant. The said parties will assess the situation and implement the appropriate response action(s).

LEAD SURFACE DUST

? First floor hallway outside cafeteria - 2 samples.

CITY_21MC100_0 09363866

NYC-WTC_000234654