345 Chambers Street air test results and chain of custody,

NYC 9/11 Public Portal Document

1 ~. 4'I`C Associates York, N 10010 104 East 25 Street, Ne"x' Fax: (212) 363-8306 Phone: (212) 353-8280 4:20:00 PM Received: 8120102

Attn: ATC Group #: 8723 Ev,ironmental Group Analysis Date: 8120/02 Taylor

I Phone: Fax: (516)358 - 1 180 9991 Project #: N147.7-15217-2 Project: NYC SCA 5th Floor Stuyvesans H. S., TAM) Performed Transmission Electron Microscopy I Asbestos Fiber Analysis by (AHER-4) by EPA 40 CFR Part 763 Final RuleAsbestos Analytical Concentration Sensitivity I Asbestos * Strucnrres (.S/cc) Notes Area Nun (S/ec) S/nsm') Asb TyFe(s) o'Sre 5 '~ Sansple Volume Analya- d < 17.79 <0.0043 ~_ 0 0.0043 ' 2 0 None Detected 0 _ 723 -r __—.-- — <p.0046 0.0046 <17.79 0 0 0.0562 0 None Deteted 5-T2 "04.50 10. j72J <0.o0~3 00043 ,17.79 0 0 None Detected

I -T3 3723 -3 1593 00 00562 0

Deterred 0 (i < 0.0013 < 17.79 < 1}.0043

c_T d 1 tiU2.00 0.0562 0 None

-= <0.0048 0.004E <17.79 0 0 0.0562 0 None Detected 5_Tt 14?4.00

<17.79 <0.0044 — — — — 0 0.0044 None Detected 0 1557.50 0.0562 0 5-T6 — 72 -6 <0.0043 3 0 0 0.0043 < 17.79 — — — — 0 None Detected 5-T7 16G2.00 O.USfi. — p77i _7

I Iiiiiiiii11 MICHAEL A. GORYCKI. Ph.D

ROMAN PF,YSA OV ApProvcd by

Analyaed by ,

is y onsitte I which is dependent on volume bcollcted~byn oused to es i reported in srruclur5lcc, s approval y on.tebnc O F eP°n ^'aY bGnduding 9 % not respanslole for Data In full, without written Qu iatmre The taboraiory a Tny report may not be repr°duoed, except only the samples reported above. Oualip~ control tlare structureslmno This reques~s for data repotted m reports

I Govern or any other aaemcy of the U.S. produd endorsement by NVLAP snalysis accuracy and precision) available e upon altndence limits and laboratory and

1:101187.0, NY State ELAP #10879 — _—• A,ccredited for NVLAP PLMITEM Page 1 oj2

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