NYC-WTC_000234786

NYC 9/11 Public Portal Document

1. January 11, 2002 ATC Associates letter deeming I.S. 89M safe for re-occupancy based on the analysis of forty-nine Transmission Electro Microscopy (TEM) samples conducted on January 10, 2002. The analysis was conducted in strict conformance with the methodology of the AHERA Einal Rule.

2. November 6, 2001 TEM analysis report of samples from the entire 201 Warren Street building, which was performed in strict conformance with the methodology of the AHERA Final Rule.

3. January 2002 limited lead-in-dust wipe sampling report for P.S. 89M, containing the results of twenty dust wipe samples from inside the school and three from the playground.

4. November 12, 2001 settled dust sampling for asbestos report for P.S. 89M. Thirty- three bulk and six soil samples were analyzed utilizing Polar Light Microscopy (PLM). December 12, 2001 settled dust bulk sampling for asbestos report for P.S. 89M. Six settled dust bulk samples were analyzed using PLM. January 17, 2002 settled dust sampling for fiberglass report at P.S. 89M. Ten settled dust samples utilizing the 3M Scotch Magic Tape - An aid to the Microscopist for dust examination method, were collected. January 22, 2002 respirable dust assessment report for P.S. 89M. The findings and conclusions are based on visual observations, the real-time environmental measurements and conditions present in the school at the time of the assessment.

5. December 19, 2001 real-time air monitoring report for P.S. 89M. Basic indoor air quality (lAQ) parameters of temperature, relative humidity, carbon dioxide (CO2) and carbon monoxide (CO) were assessed. December 21, 2001 air sampling for mercury report for P.S. 89M. Four samples for mercury vapor were collected using Carulite (Hydrar) tubes connected to battery-powered sampling pumps calibrated to collect 0.2 liters of air per minute. December 27, 2001 and January 21, 2002 air sampling for toxic organic compounds reports for P.S.89M. Samples were collected for a minimum of one hundred minutes using Supelco sampling tubes connected to battery- powered sampling pumps at a flow rate of 0.15 liters per minute. January 9, 2002 air sampling for polynuclear aromatic hydrocarbons report for P.S. 89M. The samples were collected using Teflon filters and XAD-2 tubes connected in series to battery- powered sampling pumps set at a flow rate of 2.0 liters per minute. January 9, 2002 air sampling for metals at P.S. 89M report. Samples were collected for a minimum of ten hours using 37 mm mixed cellulose ester filters connected to battery-powered sampling pumps at a flow rate of 2 liters per minute. January 9, 2002 air sampling for polychlorinated biphenyls & cyanide report for P.S. 89M. The PCB samples were collected using glass fiber filters and Florisil tubes connected to in series to battery- powered sampling pumps set at a flow rate of 0.2 liters per minute (1pm). January 10, 2002 air sampling for dioxins report at P.S. 89M. Four samples were collected for twenty-four hours using polyurethane foam (PUF) cartridges and General Metal Works samplers.

6. January 3, 2002 and January 18, 2002 wipe samples for metals report for P.S. 89M.

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CITY_21MC100_012559407

NYC-WTC_000234786