NYC-WTC_000200222

NYC 9/11 Public Portal Document

II

AMBIENT AIR AND DUST SAMPLING PROTOCOL for H.S. of Economics and Finance Page 4 of 8

In the event, that real-time measurements of respirable particulates exceed the cited Target Guidelines, 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 CO inside the school measured above the cited Target Guidelines (9ppm). 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 CO inside the school is/are greater than 5ppm and less than 9ppm, BOE will identify the source and assess the situation.

In the event that real-time measurement(s) of TVOC inside the school is/are above the cited Target Guidelines (Ippm), 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 lobby outside Auditorium - one sample.

• Cafeteria - one sample.

• Auditorium - one sample

Two random classrooms - one sample from each classroom

• Third floor Hallway - one sample

• Fifth floor Hallway - one sample

• Seventh floor Hallway - one sample

• Ninth floor Hallway - one sample

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

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NYC-WTC_000200225