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TEM AHERA countsheet, Sep 2002

Machine-extracted title · confidence 95%

Laboratory countsheet recording transmission electron microscopy parameters for an asbestos air sample.

NYC-WTC_000186925
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NYC 9/11 Public Portal Document

ATHENia ENVIRONMENTAL SERVICES NC.

Id, pie) ?ej-7^w ')6-O9 Gi e enpolnl Avenue fez (716) fS't-toee Long 151 e n d C ttv, N.Y, 111 CM TEM DEPARTMENT

TEM AHERA COUNTSHEET CLIENT : DATE : / ep /z- h/o L______ PROJECT : ANALYST: BATCH#: \o£~io- CLIENT ID#: 03________ SAMPLE IP # : -y -fO - 1 VOLUME (It): i65<0_______ G.'O. AREA(mm5: GO’S TO ANALYZE : 7 MAGNIFICATION : rTl ACC. VOLTAGE (KeV) : INSTRUMENT: JEOLIOOCXII FILTER AREA (mm^) : ANALYTICAL METHODOLOGY: EPA FEDERAL REGISTER, VOL. 52, No 210,OCT. 30, 1987, #40 CFR, PART 763, APPENDIX A TO SUBPART E

GRl GO Str. Str. L W Structure sketch SAE EDXA PHO ID D ID # Classf. (pm) (pm) D TO«

A F3 &

Analytical Sensitivity (str/cm'’): Q-00^'5 Eucentricity check: Z' y Concentration (str/cm"^) : ♦Grid acceptance criteria check : (A)..>/ (B).."Y f r?- Concentration (str/mm^ : **CHR. # STRUCT. :F M C B“ Number of Asbestos Structures : 0.5<S<5pm ./?... **AMPH. # STRUCT. :F M C B ..... Specify AMPH. Type : AM. ACT TO Number ofNon-asbestos Structures:............... p... cro7 anth. *Replica covers >50%,at least 20 GO’S with no overlapping or folded replica, intact GO’s have >.50% coverage, <50% Undissolved filter, <5% holes or opaque areas. <10% particulate coverage “ CHR.=chr>.sotile, AMPH =amphibole, AM.=aniosile, At IT =actinolile, TR£.=lremolite, CRO.=crocidolite, ANril.-aiilhophyllitc

CITY_21MC100_002964635

NYC-WTC_000186925

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NYC-WTC_000186925Source: NYC Law Department, mirrored locally

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