NYC-WTC_000200222

NYC 9/11 Public Portal Document

AMBIENT AIR AND DUST SAMPLING PROTOCOL fof H.S. of Economics and Rnance Page 5 of 8

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 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

All dust wipe samples taken shall be analyzed in accordance with EPA7082 method via Flame Atomic Absorption (FAA).

Dust wipe results shall be considered satisfactory when the levels obtained are below the EPA new levels for clearing a work area for re-occupancy after an EPA defined lead abatement is performed, as specified in 40 CFR §745.227(e)(8)(viii).

Floors: 40 micrograms of lead per square foot Window Sills; 250 micrograms of lead per square foot

Dust wipe results shall be considered unsatisfactory when the levels obtained are greater than the EPA new levels for clearing a work area for re-occupancy after an EPA defined lead abatement is performed, as specified in 40 CFR §745.227(e)(8)(viii).

Floors; 40 micrograms of lead per square foot Window Sills: 250 micrograms of lead per square foot

Results from samples collected shall be reported to BOE, UFT, School Principal and the PA consultant within 24 hours.

In the event that unsatisfactory results are obtained, the following actions are to be implemented:

1. Perform general dust clean up of all areas/classrooms with unsatisfactory results.

CITY_21MC100_003267224

NYC-WTC_000200226