Forwarded spreadsheet compiling residential asbestos sampling results collected in November-December 2001, including Building 11 reoccupancy assessment.
NYC-WTC_000139656–000139707Folder label: “E-Mails Sent M. Gilsenan 2001-2002”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Indoor floor dust samples will be collected using the EPA ERT SOP for household dust collection. As much dust as possible will be collected; the area vacuumed will be measured and reported. Samples will be analyzed for crystalline silica, gypsum, mica, and calcite using XRD analysis. Asbestos and fibrous glass will be analyzed using New York State Method 198.1 (polarized light microscopy [PLM]); if <1% asbestos is found, New York State Method 198.4 (transmission electron microscopy [TEM]) analysis will be conducted. The pH of the dust will be tested using EPA SW846 Method 9045C. 2. Outdoor Outdoor air and settled dust sampling will occur in areas adjacent to the residential building being tested indoors. Sampling will occur concurrently with indoor sampling. Ambient air sampling will be conducted at breathing height. Air sampling for asbestos will be conducted and analyzed using NIOSH methods 7400 and 7402. Respirable crystalline silica will be sampled and analyzed using NIOSH method 7500. Air sampling for inhalable and thoracic size particles will be conducted using EPA method IP-IOA. The respirable silica sample will be used to analyze the respirable fraction of the dust. The relative amounts (percent weight) of each fraction present will be determined. Each fraction will be analyzed for silica, gypsum, mica, and calcite using XRD analysis, and for fibrous glass using SEM. Settled surface dust samples will be collected by scooping visible dust into a glass container. A minimum of 25-30 grams of sample is required. The area of the surface sampled (e.g., 100 cm^) will be measured and documented. Samples will be analyzed for crystalline silica, gypsum, mica, and calcite using XRD analysis, and for asbestos and fibrous glass using New York State method 198.1 (PLM). If PLM shows less than <1% asbestos. New York State Method 198.4 (transmission electron microscopy [TEM]) analysis will be conducted. The pH of the dust will be tested using EPA SW846 Method 9045C.
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NYC-WTC_000139663
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Ranked by indexed similarity. Reasons describe shared subjects and filing context; check the source records.
NYC-WTC_000139712
Series of emails forwarding a draft memo between DEP staff members for review and finalization.
26 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 1.000
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164960
Draft compilation of asbestos air samples collected from residential areas November-December 2001 by NYC DOH and ATSDR.
25 shared non-person entities · 1 shared topics · similarity 1.000
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164732
Draft spreadsheet of asbestos sampling results from residential locations collected November-December 2001, circulated for review.
25 shared non-person entities · 1 shared topics · similarity 1.000
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000164784
Transmission of revised asbestos sampling results for residential samples collected November-December 2001.
23 shared non-person entities · 1 shared topics · similarity 0.998
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000149537
Instructions and sections for collecting sample location data from a specific building interior.
25 shared non-person entities · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000153220
Draft protocol outlining objectives and locations for assessing airborne and settled dust exposures in residential areas.
16 shared non-person entities · 1 shared topics · similarity 0.987
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000153258
Draft protocol for assessing airborne and settled dust exposures in residential areas following the World Trade Center collapse.
16 shared non-person entities · 1 shared topics · similarity 0.987
machine-extracted · confidence unavailable · Check page ↗17 shared non-person entities · 1 shared topics · similarity 0.984
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000153247
Draft protocol for assessing airborne and settled dust exposures in residential areas following the World Trade Center collapse.
15 shared non-person entities · 1 shared topics · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗15 shared non-person entities · 1 shared topics · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000152814
Draft document outlining concepts and priorities for sampling buildings near the WTC to identify worst-case contamination scenarios.
15 shared non-person entities · 1 shared topics · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000152825
Draft protocol establishing procedures for evaluating airborne and settled dust in residential and commercial areas near the World Trade Center.
15 shared non-person entities · 1 shared topics · similarity 0.980
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
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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.
NYC-WTC_000139574
Instruction to retain original World Trade Center documents as evidence for potential future legal actions against the City.
Filed in the same folder
NYC-WTC_000139575
Instruction to retain original WTC documents for potential future legal actions rather than disposing of them.
Filed in the same folder
NYC-WTC_000139576
Forwarded memo containing World Trade Center phase contrast microscopy air quality test results from October 10, 2001.
Filed in the same folder
NYC-WTC_000139577
Forwarded memo with World Trade Center phase contrast microscopy air quality sampling test results from October 15, 2001.
Filed in the same folder
NYC-WTC_000139579
Request to DEP bureau staff to complete and submit time sheets documenting hours worked on World Trade Center response activities.
Filed in the same folder