NYC Law Department release
Independent mirror · updated as the City releases more · v1.3.3
☕ Buy me a coffee
← Document results/DEP Box 03/E-Mails Sent M. Gilsenan 2001-2002
Document / 52 pages

NYCDOH/ATSDR residential asbestos sampling results November-December 2001

Machine-extracted title · confidence 50%

Forwarded spreadsheet compiling residential asbestos sampling results collected in November-December 2001, including Building 11 reoccupancy assessment.

NYC-WTC_000139656–000139707

Folder label: “E-Mails Sent M. Gilsenan 2001-2002”

Page image
Scanned page image, NYC-WTC_000139664
OCR text

OCR status: ok · source: pdftotext

z z ■<

o o i 1^ co

■D o c o CT o o' Ca5 ■D CD O O> O> Sample/Analvtical Methods 3. 03

Parameter Environmental Media Sampling/Analvtical Method Sample Flow/time Analytical LOD/LOO* o o o c Asbestos*' I/O*~ air NIOSH 7400, NIOSH 7402 16L/min-4hr(3840L) 0.010 f/cc (LOQ) 3 Breathing zone sample height 5 hr (4800L) 0.008 f/cc CD 6hr(5760L) 0.007 f/cc Inhalable (< 100pm) I/O air ACGIH/ISO sampling criteria 4 L/min -3.2 hr (750L) 30 ug / 40 ug/m’ particles Gravimetric, XRD (crystalline silica, gypsum, mica, and calcite), and SEM (fibrous glass). Thoracic (<10pm) I/O air EPA IP-lOA/Gravimetric, 4L/min-3.2hr(750L) 30ug/40ug/m’ particles XRD (crystalline silica, gypsum, mica, and calcite), and SEM (fibrous glass) Respirable I/O air NIOSH 7500/ 2.5 L/min-5.3 hr(800L) 5 ug / 6 ug/m’ crystalline silica Gravimetric, XRD (gypsum and respirable (<4pm) mica, and calcite), and SEM 30 ug/ 90 ug/m’ particles (fibrous glass) Respirable (<2.5pm) I/O air EPA IP-lOA/Gravimetric 4L/min - 3.2 hr (750L) 30 ug/ 40 ug/m’ particles XRD (crystalline silica, gypsum, mica, and calcite), and SEM (fibrous glass) pH I/O dust EPA SW 846 Mtd 9045C (soils) 10-25 g asbestos I/O dust NY State Method 198.1 (PLM) 10-25 g and if <1% NY State Method 198.4 (TEM) silica, gypsum, I/O dust XRD (SEM for fibrous glass) 10-25 g fiberglass, mica, and calcite LOD;Limit of analytical detection; LOQ: Limit of analytical quantitation " use professional judgement re: asbestos sampling times to avoid filter overload (collection of 2 samples with different sampling times may be necessary)

7

OCR can misread numbers and units. Confirm readings against the page image before using them.

NYC-WTC_000139664Source: NYC Law Department, mirrored locally

Related records

Browse subjects →

Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.

Same-box records

Filed elsewhere

More like this page

Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.

Buildings in this record

Machine-extracted building matches; verify each source. Buildings, never households.

Others also read

Readers open these alongside this record — through an Ask answer, the same folder, or indexed similarity. Not a claim they are about the same event.

Compare copies and versions →