Facsimile cover sheet from US EPA Region 2, August 2002

NYC 9/11 Public Portal Document

WTC Indoor Air/Environments Monitoring - itipHnq and Analytical Procedures For Background and Pilot Clean up Studies’

Analytical I) Media Saraplina Points SampItfiQ K. Descriptiort Anai/tlcoi MatJiod Proposed CT Paiartitlers CT I 1-^ '-'fo v,3cuuming metttod. Three collocated samples will jt Asbe&los ASTM 0 67S-. ASTM D 575&-95 I SetUed Dust Carpets, fabric furnilore or be colleciod tom eadi locatioo. ro Porous Soft drapery in areas of activity surfaces iving rooms, faraily rooms) Lead ASTiv- E 1073 91 (I waoJumariB method. Three collocated samples wiB ^ba collected tom each location. SW-84fi60J0B I A!.iiesUis ASWb6-i8t>99 Wipe Samples ASTM D 6480-99 (wipe} lx 4.V I eao HUB AnpenOix Ki. I Wr"pe Samples SW-84660WB

Horizontal surfaces of lldxiris ASTMD666VC1 Wipe Samples ASTM 66ei4)1/SW-B46 8290 Settled Dust -n tables or counters ano baie _ ar Non-porous Wipe Samples ASTM 6661-01/SW-846 827CC o floors, ceilings and walls m PAHs ASIM 0661* t-LH 3 Hard areas of activity (living Wipe Sample collet JeJ al one localioir per unit. No Formal MeHmi (NIOSK 7500 Modified} surfaces Total Dust HUD Aj.ipBn«u 13 1" luoms, famUy rooms) S3if.a. ^□^'Jte, EFi Vu'iiXi Sninjiios PJI par.iinaters will to coliccton on one wipe. NIOSH 7500 (XRD) gypsum HUO Aopeniii'^ 13 I” m .. --------------- ----------------- ---- ... ---------- “D I) MMVI ASTM O MeC-Pf' Samples will be cofiibiiiM w&lr Uie asbestes sampBng. EMSL MSO.0301) xt m Air puiiip upBialed al lOUtrrIn for 8 tours Io achieve the COPC PCM NIOSH 7400 followed by TEM AHERA CT AsPeitcis MOSH 7400 wkgroup ttutecSoii iimll metiwd. o z Air pump operated at WUniin for ti hours to achieve the COPC Lea'.l MOSH OHIO SW-M6 eOlOB lu vikfijotip dutfctlon limit o SW-646 8270 (Analyfical melhod with be X) Air pump operator} at 2l/min for 8 hours, PiFcl Clean-up study only n PAHy hF-Srl LSI 5 modified fa achieve the COPC wkgroup detector lor worst cast- scenario',. Areas ot knoiw aclivrty limit Indoor Air (lively rooms, ramily rooms) Ail pump •.uctch 1 s:: 51 imi!; to fiours frua moditicationis not Ihexiry ■ ‘ J 9 <M.-:i'!ed fO' iiutum air) a proven nelto-i ■ To he ■ o m-fuUtJ duiiny (lie Mtei Coan up study SW-846 8290 ix.ly f« wcrul case scenarios. O Silica, calcite, Air > .ipi" ,ler -I 2 51 rjiiri stir 3 .toms Io ,ictnBW the COPC Im ...-Sh ■ NIOSH 7500 (XRCJ) gypsum wkgnjuo delectson limits

MMVI Assijunej Itoi n behaves the some as asbeslM, samples ivBI be f r.'SH 7400 EMSL MSD.0300 rembiited wThlfie asbestos sainpling. Bulk Winnies wK be coilectod from HVAC or AC window type unit Ashe.sios Bub SiJiipl? PIM NYS 198.1 fallowed by 'XI fillers, shaken inio a ptestic bag and transferred into the sample I— TEMNVS19B.4 -0 uonlainei. Ill IIso viHjinc requited Is nut uttarnabte for al, analysis, foe sarnplo co Lead tiufr Sample SW-846 60WB cn imII Lo aiialy/ed for asbestos only. HVAC systems and AC EE] units (oolleclion ol bulk dust sample twm (tie unit air PAHs Blltli S.’MifiU; (if ihe volume requireil Is nut attainable for ail analysis, ths sample will ho analyzed for asbestos only, SW-846 8270 Si Bulk Dust X. fillers). Background (Il the volrime lequired is no) attairiabte for all anstysls, the campte Dioxins fcmiL Sample SW-848 8290 stuoy only. will be ar).-iiyze(i fur asbestos only. 13 SiliCij. calcite, (if (iiH volume requi'ed is not attainable fur an analysis, Iho sample Duik Sample IMIOSH 7500 (XRD} gypsiiiii will bo analyzed for asbestos only. © MtXVl- Bulk Sample (If (lie volume regoued Is noi attainabte for all analysis, the sarrtpie put NYS 198.1/EMSL MSD.Q300 cn will be analyzed for asbestos oniy.

[TOTE: ** Wipe samples far sIBca, calcite and gypsum wiB be oollecled usii>n 1' ■ HUD Appendix 13.1 method since na standardized method is available.

NYC-WTC_000155803