EPA WTC response coordination memo, May 31, 2002

z Z o WTC Indoor Air/Envircnments Monitoring - Sampling and Analytical Procedures For Background and Pilot Clean up Studies* o io Analytical co

I Media Sampling Points Sampling Method Proposed Description Analytical Method Proposed o Parameters ■D c o CT o This is a micro vacuuming method. Three co-located samples will J Settled Dust Carpets, fabric furniture or Asbestos ASTM D 5755-95 ASTM D 5755-95 o' CD be collected from each location. o Porous Soft drapery in areas of activity ■D o ro surfaces (living rooms, family rooms) This is a micro vacuuming method. Three co-located samples will 3. Lead ASTM E 1973-99 SW-846 6010B 03 be collected from each location. o o Asbestos ASTM D 6480-99 Wipe Samples ASTM D 6480-99 (wipe) o c Lead HUD Appendix 13.1 Wipe Samples SW-846 601OB 3 CD Horizontal surfaces of Dioxins ASTM D 6661-01 Wipe Samples ASTM 6661-01/SW-846 8290 Settled Dust tables or counters and bare Non-porous floors, ceilings and walls in PAHs ASTM D 6661-01 Wipe Samples ASTM 6661-01/SW-846 8270C Hard areas of activity (living surfaces Total Dust HUD Appendix 13.1 Wipe Sample collected at one location per unit. No Formal Method (NIOSH 7500 Modified) rooms, family rooms) Silica, calcite^ HUD Appendix 13.1** Wipe Samples. All parameters will be collected on one wipe. NIOSH 7500 (XRD) gypsum MMVF ASTM D 6480-99 Samples will be combined with the asbestos sampling. EMSL MSD.0300 Air pump operated at lOL/min for 8 hours to achieve the COPC PCM NIOSH 7400 followed by TEM AHERA Asbestos • NIOSH 7400 wkgroup Practical Quantitation Limit (PQL) method. Air pump operated at lOL/min for 8 hours to achieve the COPC Lead NIOSH 7300 SW-846 601OB wkgroup PQL

Air pump operated at 2L/min for 8 hours. Pilot Clean-up study only SW-846 8270 (Analytical method with be PAHs NIOSH 5515 for worst case scenarios. modified to achieve the COPC wkgroup PQL Areas of known activity indoor Air (living rooms, family rooms) Air pump operated at 25L/min for 35 hours. This modification is not Dioxins TO-9 (Modified for indoor air) a proven method. To be conducted during the Pilot Clean-up study SW-846 8290 only for worst case scenarios.

Silica, calcite, Air pump operated at 2.5L/min for 8 hours to achieve the COPC NIOSH 7500 NIOSH 7500 (XRD) gypsum wkgroup PQL Assumed that it behaves the same as asbestos, samples will be MMVF NIOSH 7400 EMSL MSD.0300 combined with the asbestos sampling. Bulk samples will be collected from HVAC or AC window type unit PLM NYS 198.1 followed by Asbestos Bulk Sample filters, shaken into a plastic bag and transferred into the sample TEM NYS 198.4 container. (If the volume required is not sufficient for all analyses, the sample Lead Bulk Sample SW-846 601OB will be analyzed for asbestos only. HVAC systems and AC units (collection of bulk dust (If the volume required is not sufficient for all analyses, the sample PAHs Bulk Sample SW-846 8270 Bulk Dust sample from the unit air ___ will be analyzed for asbestos only._________ filters). Background study (If the volume required is not sufficient for all analyses, the sample only. Dioxins Bulk Sample SW-846 8290 ____________ will be analyzed for asbestos only. Silica, calcite, (If the volume required is not sufficient for all analyses, the sample Bulk Sample NIOSH 7500 (XRD) gypsum will be analyzed for asbestos only. (If the volume required is not sufficient for all analyses, the sample MMVF Bulk Sample PLM NYS 198.1/EMSL MSD.0300 will be analyzed for asbestos only.

NOTE: ** Wipe samples for silica, calcite and gypsum will be collected using the HUD Appendix 13.1 method since no standardized method is available.