NYC-WTC_000200222

NYC 9/11 Public Portal Document

AMBIENT AIR AND DUST SAMPLING PROTOCOL for H.S. of Economics and Rnance Page 7 of 8

• First floor lobby - one sample. • Fifth floor hallway, near elevators - one sample. • Tenth floor hallway, near staircase B - one sample.

All sample collected shall be analyzed utilizing the EPA 8081 method.

Results from samples collected shall be reported to BOE, UFT, School Principal and the PA consultant in 4 days from the day of sampling.

In the event that any one sample result is unsatisfactory 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).

HEAVY METAL AIR SAMPLES

• First floor lobby - one sample. • Fifth floor hallway, near elevators - one sample. • Tenth floor hallway, near staircase B - one sample.

All sample collected shall be analyzed utilizing NIOSH 7300 method for Al, Cd, Cr, Co, Cu, Fe, Mg, Mn, Mo, Ni, Zn and NIOSH 6009 method for Hg.

Results from samples collected shall be reported to BOE, LIFT, School Principal and the PA consultant in 4 days from the day of sampling.

In the event that any one-sample result is unsatisfactory 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).

TVOCs AIR SAMPLES

• First floor lobby - one sample. • Fifth floor hallway, near elevatore - one sample. • Tenth floor hallway, near staircase B - one sample.

All sample collected shall be analyzed utilizing Hydrocarbon Scan (16+A&B) OSHA 7 method.

Results from samples collected shall be reported to BOE, UFT, School Principal and the PA consultant in 4 days from the day of sampling.

In the event that any one sample result is unsatisfactory BOE will immediately notify the LIFT, the school principal, the school custodian and the PA consultant. The said parties will assess the situation and implement the appropriate response action(s).

NOTE; Please note that this protocol established to address the environmental concerns due to the WTC tragedy. Therefore, this document will be constantly reviewed and modified as the environmental conditions in Lower Manhattan are changing.

CITY_21MC100_003267226

NYC-WTC_000200228