Laboratory report for 310 Greenwich Street, May 2002

NYC 9/11 Public Portal Document

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Duane Street Associates c/o Hudson River Management, LLC., 40 Harrison Street New York, NY. 10013 Attn.: Ms. Deborah Dolan.

Manager. N; RE: EM Air quality ; mo:or itoring conducted at 40 Harrison Street, NY, Location: Conimou areas and apartments.

Dear Ms. Dolan

The results of the air monitoring conducted at the above referenced address, show that the asbestos fibers airborne concentration levels were below 70 structures/mm' at testing time. The scope of work was the air quality testing in the common areas of each floor of the building and in two (2) randomly chosen apartments in each floor as per our professional judgment. The samples were collected during regular activities.

The air monitoring was conducted following all City, State and EPA Federal Guidelines and Regulations. An inspection was conducted on a daily basis in each of the areas tested to verify the absence of any suspicious materials and to make sure that the tests had been performed properly.

The air monitoring and inspection was conducted on October 25, 26, 29, 30 2001.

The samples were analyzed by Transmission Electron Microscopy (TEM) Technique following the EPA 40 CFR 763 Final Rule for AHERA. Victor Escalona, NYS DOL Certificate # AH 90-16572, Maria Escalona, NYS DOL Certificate # AH 98-01434 and Segundo Jofat, NYS DOL Certificate # AH 89-09474 conducted the air monitoring. Victor Escalona, NYS DOI__ Inspector Certificate # AH 90-16572 and NYC DEP Investigator Certificate # 78125 conducted the irispectioris in each of the tested areas.

The TFM air samples were analyzed by EMSL Analytical, Inc. , NYS DOH EL_AP Certificate if: 11506 and NVLAF' TEM Certificate #: 101048-9. The results meet NYC Dl=_l ' NYS DOL, OSHA and EPA Federal Standards.

The areas are safe for occupancy.

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NYC-WTC 000134781