Cover page for bulk dust sample analysis, 110 Church Street,

NYC 9/11 Public Portal Document 10/16/2001 09:36 5169977528 EMSL L1 IJAUE 0 /

208 Stonelttnge Lane .EMSL Analytical,Inc. Carte Place, NY 11514 Phone. (516) 997-725! Fox:

(516)

997-7528

EMSL

Attn.: STEVE POWELL Environmental Monitoring & Consulting Assoc. Monday. October 15, 2001 (EM & CA) P.O. Box 872 Ref Number LI0115738 Somerville, NJ 08876

POLARIZED LIGHT MICROSCOPY (PLM) — POINT COUNT Performed by EPA 600/R-93/116 Method*

I Project: 110 CHURCH ST NY, NY

ii Location 22ND FLR Appearance Grey Sample

Treatment sed/Crushed ASBESTOS

% < 1A Chrysotlle Type •/a

20.% Cellulose Fibrous NON

-ASBESTOS

%

60,% Other Non

-Fibrous

STAIRWELL Fibrous I Heterogeneous 20.%

Fiber

Glass

50-21-001 1ST FLR / SW Grey

I 10.% Cellulose 80_% Other -ORNER <1%

Chrysotile

Fibrous 10.% Fiber Glass Heterogeneous

50-21-002 BSMT/E END OF 11 BLDG Grey Fibrous Teased/Crushed None Detected I 20.% Cellulose 20.% Fiber Glass 60,% Other :

Heterogeneous

I . 50-20.001 20TH FLR/S SIDE CENTER OF FLR Ic y Fibrous None Detected 30.% Cellulose 30.% Min, Wool 40.% Other

I Heterogeneous

50-20002 20TH FLR/SW I Grey SIDE OF FLR I None Detected I 10_% Cellulose 90.% Other Fibrous

I. I Heterogeneous

50-19.001 19TH FLR / SW Grey Teased/Crushed None Detected 20.% Cellulose 40.% Other CORNERS Fibrous 40.% Min. Wool Heterogeneous

Comments; For all obviously heterogeneous easily separated Into subsamples. and for layered samples, each component is ana samples

Also, "At of Layers" refers to number of separable subsamples. p ed p separately. rarely' NY samples analyzed by ELAP 198.1 Method.

Note: - Two samples were submitted with ID50-2B-002, both results given.

I . Michelle McGowan Approved Analyst Signatory Disci mere: PLM has been known to mssaabesle Small petesntege or samples which 94nmin aseostos. Thus naneUve PLM rosupa ne>spt be guersnteod, EMSL au)lpeses Ihal eemplea repelled ae 41% at none deted°d tae reeled with elmer SEM ins

the Items tasted. This repel may not be reproduced exmpt in rut, w%heut wrinan approval by EMSL Ther$ TEM The above teat repent relates only to 7 claim product endorsement by NVLAP nor say agency of the United Slates Goverrmenl. Laboratory is above teat must not be used by the 414515 to ' requested to physically eeparnto end eretvye Ctysrad °ample not reopomtrle for the atsuracy of results whore pwrermed by EMSL Long Island (NVLAP Air end sulk P101046-10, Mr ELAP 11469. CA SLAP 2339, CT P14.0245)

I

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