Fax cover sheet, Ambient Group Inc, Oct 2001

NYC 9/11 Public Portal Document

OCT-22-01 MON 0b 03 PM AMB I ENl• GROUP INC h AX NO. 212 (68 1 b4U P. U (/16

A ambient group inc. NA! nNm hl.Arx)UAFrr.q• Indoor environmental quotity surveys Water treatment consulting 55 wl .T 14,,, snu.(r 11.11. r9 (1)lt Asbost°s tt lead field services NLW YQ!IK, nxw YR. Itwt:S Resuldtory compliance proerarns T17.: (=13! 4Al-78r: Air, water 0. Bait analytical laboratories rAx: (=13) gr'i-9i97 W11!; WW W.AM11u.NrrfOururM

October 22, 2001

Mr.Elliot Zuckerman Cushman & Wakefield a/a/f Mercantile Exchange One North End Avenue New York, New York 10282

Re: One North End Avenue Ambient Project #211338 Dear Mr. Zuckermen:

The following is a su}nmart' of the performed on Sdp`te ibex 16t indoor environmental quality survey that Amvey benti Group, n, 2001 at the above referenced location. sampling for airborne metals, carbon dioxide, The ncluded humidity, polynuclear aromatic carbon monoxide, temperature, hydrocarbons and airborne asbestos relative structures by TEM. Analysis of all indoor readings for indoor readings were below OSHA,carbon dioxide and carbon monoxide revealed that all guidelines and/or regulations, ACGI} , ASHRAE and other recommended industry The indoor temperature readings readings ranged from 53,4% to ranged from 66.0°? to 69, indoor with the conditions described in60.7%. Al! indoor relative humidity readingrelative ity the ASHRAE 55-1992 thermal were consistden ideal indoor conditions. ' The comfort standard as well as indoor remp re gs We slightly below the ASHRAE 55-1992 thermal standard for fall/winter (69°Fin76 month

Four (4) TEM samples were collected from floors 3, 7, 11 and by transmission electron from the lobby and analyzed microscopy (TEM) for asbestos analysis indicated that airborne structures. The results of the testing were less than the an asbestos levels inside and outside the alytical building at the time of standard of 70 Structures/mm2 as sensitivity of the instrument, which is well below the EPA well as other recommended regulations. industry guidelines and/or Four (4) air samples were collected from floors 3, 7, 11 and polynuclear aromatic hydrocarbons in from the lobby and analyzed for that the levels of the air. Analysis of all four individual compounds were below the (4) samples collected revealed Limits and NIOSH REi, guidelines. OSHA Permissible Exposure

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