OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
cleaning. Gypsum was not detected above the detection limit of0.008 mg/m^ in the air sample.
Lead (HVAC) Before Cleaning Samples - One wipe sample was collected from the HVAC system. Lead was detected above the primary clearance criterion of 25 pg/ft’ at 1310 pg/lV.
Post Cleaning Samples, HVAC System - Two air samples and two wipe samples were collected after the first cleaning. The two air samples were below the detection level and primary clearance criterion of 1.0 pg/m'. Lead concentrations exceeded the primary clearance criterion at 136 pg/ft^ and 183 pg/ft^. The post-cleaning lead exceedances were attributed to the composition of the HVAC construction material. «r Post P* Cleaning Samples (Test 4A) - Five air samples were collected. All were below w the detection level.
Alpha-Quartz (HVAC) Before Cleaning Samples - Pre-cleaning air samples were not collected.
Post P‘ Cleaning Samples, HVAC System - One air sample was collected after the first cleaning. The air sample was below the detection limit. * Calcite (HVAC) Before Cleaning Samples - Pre-cleaning air samples were not collected.
Post P‘ Cleaning Samples, HVAC System - One air sample was collected. The air sample was below the detection limit.
Cristobalite (HVAC) Before Cleaning Samples - Pre-cleaning air samples were not collected. 4 Post P‘ Cleaning Samples, HVAC System - One air sample was collected after the first 4* cleaning. The air sample was below the detection limit.
Tridymite (HVAC) Before Cleaning Samples - Pre-cleaning air samples were not collected.
4* Post P‘ Cleaning Samples, HVAC System - One air sample was collected. The air sample was below the detection limit.
MMVF (HVAC) Before Cleaning Samples - One sample was collected. The wipe sample had an MMVF concentration of 11732.44 S/cm^.
Post P‘ Cleaning Samples, HVAC System - Three air samples and two wipe samples were collected. All of the air and wipe sample results indicate that MMVF concentrations were below the detection limit and that the air samples were below the primary clearance «» 91
CITY_21MC100_011105321
NYC-WTC_000195287
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machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
Similarity score 0.999 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
Similarity score 0.990 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
Similarity score 0.973 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
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machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
Similarity score 0.970 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000145695
Form documenting the tracking and handling of environmental samples collected by the Department of Environmental Protection.
Similarity score 0.970 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Machine-extracted building matches; verify each source. Buildings, never households.
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