Laboratory report for 310 Greenwich Street, May 2002

NYC 9/11 Public Portal Document Feb 20 02 11:C0a Hudson rivermanagement 2125715663 p.3

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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. conducted at 40 Harrison Street, NY, NY. RE: TEM Air quality monitoring apartments. Location: Common areas and

Dear Ms. Dolan, address, show that The the results asbestos of the

The air fibers scope monitoring airborne of work concentration was the air levels conducted at the above referenced

t quality sting below commton areasrmm2 at oeach our testing time. and in two (2) randomly chosen apartments in each floor as per floor of the building collected during regular activities. professional judgment. The samples were udelifleS monitoring was conducted llowing ll City, tat and EPA Federal ofGhe areas The air and Regulations. An inspection was f conducted on a daely bass in each tests absence of any suspicious materials and to make sure that the tested to verify the had been performed properly. monitoring and inspection was conducted on October 25, 26, 29, 30 2001. The air analyzed by Transmission Electron Microscopy (TEM) Technique The samples were NYS L Rule for AHEA. Victor scalofla following the EPA 40 CFR 763 Final NYS QOL CertificateE # AH 98-01434 a~d Certificate # AH 90-16572, Maria Escalona > 89-09474 conducted the air monitoring. AH Segundo Jofat, NYS DOL Certificate # # AH 00-16572 NYC DEP Escalona, NYS DOS tnspectcera are s. Victor Certificate # 78125 condu hei r ~ectios in each of he tcdsted investigator P analyzed SL Analytical, Inc. N'S The TEM air samples were Certificate #: 0 ' St DOHO NYC y Certificate #: 11506 and NVLAP TEM Standards. Federal DEP, NYS DOL, OSHA and EPA

lie areas are safe for occupancy.

NYC-WTC 000134703