NYC-WTC_000208957

NYC 9/11 Public Portal Document

Jun 10 02 02;a8p FEB-07-2002 1?;44 SCIENTIFIC “0759 p. 9

® D 5755

Mauriolt iit Sdwob documeni H). Resotti. fer eseh AI«RA |7. Sample Storage svuaua ideodfied, iW length and uddtb measurements. 17.1 The waihed-oui sample cassetree tan be disciided 16..3 Record NSD (No Struasirei Deieciod) whes ao after use. structaics are dereoed in the grid opening. 17.2 Sample grids and unused filter Sections (7. (5) must 16.4 IdeadRr satKoaes daisiSad as chrysolite ideal Sed be stored lor a t^nimum of one year. by erther tleoeron dittaCtiOB or X-»y analysis (7J) —" recontodaaaeoaMsired Verify «lew oce cun gf ever; uaa 18. Bepertiog chrysotile siruenira by X-ray analysis. 18.1 Report the following iitfonaatfon for each dust 16.5 Scraerwa tiassifiod as anphibolesby X-ray iiij ysis sample analyzed; and electret! diffraction are reoorled on the couet sheet. For 18.1.1 CoBceatreuon in stnictures/cta’, more tafonaaaon on xieatiSeatien, see Yimaie, ci ak C) or 18.1.2 Ths «wJyii«l 5es,sjii.vity. "iicicid and Dflbn (Sk 18,1.3 Typo of asbesios preseat. 16.6 Recatd a typi^ eJecuon diSneuon patten for < ech 1S. 1.4 Number of asbesios stntonrts counted. type of asbesms otaerved for each group of samples (<if a 18,1.8 Effesaive ultatiOD am. nnaimutn a/ every five saapies) analyzed. Rccprd the ie.1.6 Average size of the TEM grid openinp that wsre aicfograph nunfaer on the eouM shed, Record at least ant counted, X-ny spectnua for och type of asbotos obaerved per IS. 1,7 Number of grid opeoiam eaaiained. sample. Atacb the priai-outt to the back of the count si^ 18.1.8 Sample dilutioa used. - If the X-ny spectrum is stored, resold the file nd disk 1$.! .9 Area of the ivjfaee ansplcd. nuntber oo the count sheet. 18.1.10 Listins of stzc data for each stnictwe eoifoted. 14.9 CouHtutg Jbiks 18.1.11 A copy of the TuM »iini sheet or a coiaplcie 16.7.1 Al a eereen mageittauen of between IS (300 ind listing of the nw dsia. An cxampls af a typical count shssei is 30 OOOX evaluate the grids for the Dost coRCcauraied san plc shown la Appendix X i. Icadiae P)*® sarepie if it is estuoated re soataia a «»e 1S.2 Daterauns ibe wtouat of asbestos in say accepted than M asiwstca structures per erid opesutg. Proceed re the sample ustBg Iba foBoueng formula; next low cMonitnud sample until a Mt of picK are £/x * JOOwtxwm otnained that have fos Ihas 30 asbesuxt struaures per: rid ------- — = asbestcj axvciurtg/cm- (1) opening. tfdlX OT4 X V^S^i. 16.8 Awlyieai Setsiltirity~~A.a aaalytiiaU senriiivity of where apptrodnateiy 1000 asbestos sirueturei per tquhit c^u* pSTR a siuaber of asbestos smeturei counted, metre (caieutetod for the dececriog of a sjjglc refce res £FA = effeecvt fllur area of the final sxjapling fuser, mm^ nruKure) baa been deseed for this analysis. This seaac' it.v GO a nunjbcj of grid openiags couaiod, can be achieved by increasing the asaoust of Ifouid fat* ed, GCA = average grid opening ansa, nam^ increasing the .lumber of grid opening analyzed, or ie- SPL • soifocs area sampled, oe?, and V = volume of sample filter^- ia step 10.4.9, repre- cmaag the sot of the final filter. Occarioeally, due to i igh uslisg Ute actuai vahusc tatoen Crsa the original panicle loadings Of high asbestos waceauation, this tnajtyi- 100 mL suspension, mL leal sensitivity cantuat be praetieally asteltved and slept ing rule apply. 1?. Quality CosSreVQwal'"? .4asui«aee 16.9 Liatii of Deteahm^-Tho limit et dstecnon for' hu 19,1 In gsaeraL, thp laboratory's quality control checks are method is defi^ as, at a mininiiiia. the couaosg of (lur used re verify that a system is ptrfcaraing according re asbestos scuctures dtawg the TEM aaalysii. If less than («r specificatinns regatdiog tucuracy and consiaency. In an asbestos structures are counted during the analysis thee he analytical laboratocy. spiked or kno*i) quantiiative samples analytical result which will be repaired wifi be leu than ihe are DorroaUy tisad- However, due to Ue U^cuttics in Umit of eSeteerion and 8 “105 than' sign {<) wifi applsij prapariog known qanatitadMt aabestot samples, routine before the number. Afi data shall be provided in th: la »• quality centroi testing focuses on resantlyus of sareptes rawpy report. (duplicate recounts). 16,10 Slopping Ikuies: 19.1.1 fle"Bnalyic samples at < rate of'/« gf rhe tampie 16.10.1 The aaaiysi is stopped upon ths compkrioaj of sets (one out of every ten samples analysed not ineiuding fire grid square that achieve an analytical sensitivity of ess Isfaoratory blaaki) The re-atuiyas thall cotuis of a recond than 1000 aghestoe enreturee per SQUatc Ctniiroctre. satnpU ptspandon obtaimai feom lire anal filter, 16.10.2 IfaaaaalytiaUsenijiivityof iOOOasbesres stric­ 15,3 1b addirios, Quality Msurenre progratus mm fellow tures per square cenomeere cannot be achieved afier a^ the criteria shewn in the USSPA Aibest6S-C0nuinuis/^aie- Ixasg ten grid openings then stop oo grid opening No. IC or ftais In ScfK/Blt docameni (4) and in the if!S7/}iyLt/ the grid opcoins wbich conaios the lOWh asbestos stroctye, frygram fituOieoit for Alrbom jisbeaas Aiubeii docu­ whichever »m« fim. A auahnum of four grid squares fi all ment (dX These documents deserib* sAmfle cusiocly, ssxnpie be analyzed for each rempte. pttparenoa, bkok check.', for contamisnioD, calibrahon. 16. JOJ. I if the analysis is twpped baaase of the lOM sample aealysts, axalyi! quaJi/icatjOBa. and technical facili­ jiructurs rule, the enrirt grid square sonniioiag the 10( sb ties. siniBiuie must be soiinied. 16,11 After amdyaia, remove the grids from tbe TEM, aid 30. CaUhrsoons replace there is the opprapriaxe grid oongo holder. 20.1 Perform caUbratk,os of Ue inetrumeBtanon on a S

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