Forwarding WTC air monitoring scope for final review, Aug 2002

NYC 9/11 Public Portal Document

Environmental Protection Agency §763.88 area that is greater than 5,000 ft^, ex­ ysis under the EPA Interim Asbestos cept as provided In § 763.87(c) (2). Bulk Sample Analysis Quality Assur­ (b) Thermal system Insulation. (1) Ex­ ance Program until the NBS PLM lab- cept as provided In paragraphs (b) (2) oratoiy accreditation program for PLM through (4) of this section and is operational. § 763.87(c), an accredited inspector shall (b) Bulk samples shall not be compos­ collect. In a randomly distributed man­ ited for analysis and shall be analyzed ner, at least three bulk samples from for asbestos content by PLM, using the each homogeneous area of thermal sys­ “Interim Method for the Determina­ tem Insulation that is not assumed to tion of Asbestos in Bulk Insulation be ACM. Samples” found at appendix E to sub­ (2) Collect at least one bulk sample part E of this part. from each homogeneous area of (c)(1) A homogeneous area is consid­ patched thermal system insulation ered not to contain ACM only if the re­ that is not assumed to be ACM if the sults of all samples required to be col­ patched section is less than 6 linear or lected from the area show asbestos in square feet. amounts of 1 percent or less. (3) In a manner sufficient to deter­ (2) A homogeneous area shall be de­ mine whether the material is ACM or termined to contain ACM based on a not ACM, collect bulk samples from finding that the results of at least one each insulated mechanical system that sample collected from that area shows is not assumed to be ACM where ce­ that asbestos Is present in an amount ment or plaster is used on fittings such greater than 1 percent. as tees, elbows, or valves, except as (d) The name and address of each lab­ provided under § 763.87(c) (2). oratory performing an analysis, the (4) Bulk samples are not required to date of analysis, and the name and sig­ be collected from any homogeneous nature of the person performing the area where the accredited inspector has analysis shall be submitted to the per­ determined that the thermal system son designated under §763,84 for inclu­ Insulation is fiberglass, foam glass, sion into the management plan within rubber, or other non-ACBM. 30 days of the analysis. (c) Miscellaneous material. In a man­ ner sufficient to determine whether (52 FR 41846, Oct. 30. 1987. as amended at 60 material is ACM or not ACM, an ac­ FR 31922, June 19, 1995] credited Inspector shall collect bulk § 763.88 Assessment. samples from each homogeneous area of friable miscellaneous material that (a)(1) For each inspection and rein­ is not assumed to be ACM. spection conducted under §763.85 (a) (d) Nonfrlable suspected ACBM. If any and (c) and previous inspections speci­ homogeneous area of nonfrlable sus­ fied under §763.99, the local education pected ACBM is not assumed to be agency shall have an accredited inspec­ ACM, then an accredited inspector tor provide a written assessment of all shall collect, in a manner sufficient to friable known or assumed ACBM In the determine whether the material is school building. ACM or not ACM, bulk samples from (2) Each accredited inspector pro­ the homogeneous area of nonfrlable viding a written assessment shall sign suspected ACBM that is not assumed to and date the assessment, provide his or be ACM, her State of accreditation, and if appli­ cable, accreditation number, and sub­ §763.87 Analysis. mit a copy of the assessment to the (a) Local education agencies shall person designated under §763.84 for in­ have bulk samples, collected under clusion in the management plan within §763,86 and submitted for analysis, ana­ 30 days of the assessment. lyzed for asbestos using laboratories (b) The inspector shall classify and accredited by the National Bureau of give reasons in the written assessment Standards (NBS), Local education for classifying the ACBM and suspected agencies shall use laboratories which ACBM assumed to be ACM in the have received Interim accreditation for school building into one of the fol­ polarized light microscopy (PLM) anal- lowing categories:

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NYC-WTC_000139270