OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
DRAFTM 2. Post cleaning air samples for fibrous glass and silica shall be collected concurrently with the asbestos clearance air sampling procedures specified herein. Five samples for fibrous glass and one sample for silica shall be collected in each apartment.
3. Wipe samples shall be collected before and after cleaning for lead, dioxin, and PAHs.
Prior to the cleaning activities, three wipe samples shall be collected for each of these parameters in each apartment. The sampling locations shall be a wall, a bare floor, and a counter or tabletop.
After cleaning activities, three wipe samples shall be collected for each of these parameters in each apartment. The sampling locations shall be a wall, a bare floor, and a counter or tabletop; preferably at the same location as the pre-cleaning samples.
4. The required sampling and analytical procedures are specified in Table 1.
5. The detection limit for PAHs shall be no greater than 1 pg/m^.
6. Samples containing concentrations of specific congeneric analytes (PCDDs and PCDFs) considered within the scope of the dioxin sampling method that are greater than ten times the upper MCLs must be analyzed by a protocol designed for such concentration levels, e.g.. Method 8280. Analytical results shall be reported using a 2,3,7,8-TCDD toxicity equivalence (TEQ). The TEQs shall be reported four ways. A TEQ which sets non-detects to zero (i.e., TEQ (ND=0), a TEQ which sets non-detects at 1/2 the detection limit (i.e., TEQ (ND=l/2), a TEQ Estimated Maximum Potential Concentration with non-detects set to zero (i.e., TEQ EMPC (ND=0), and a TEQ Estimated Maximum Potential Concentration with non-detects set to 1/2 the detection limit (i.e., TEQ EMPC (ND=l/2). Please see attachment 2 for the format and data to report for dioxin wipe samples.
Table 1: Sampling and Analytical Methods Parameter Description Sampling Analytical Method Maximum Methodology Turnaround Time Lead Wipe samples HUD Appendix 13.1 EPA Method SW-846-6010B 1 day PAHs Wipe samples ASTM D6661-01 ASTM-6661-01 14 days EPA SW-846-8270C Dioxin Wipe samples ASTM 6661-01 ASTM 6661-01 14 days EPA Method SW-846-8290 Fibrous Air samples NIOSH 7400 NIOSH 7400, 3 days Glass Counting Method “B” Crystalline Air samples NIOSH 7500 NIOSH 7500 (XRD) 14 days Silica Asbestos Air samples Collection using Asbestos Fiber Analysis by 1 day NIOSH 7400 Transmission Electron Microscopy (TEM) Performed by EPA 40 CRF Part 763 Final Rule (AHERA) [see Attachment 1] and NIOSH 7400 (PCM)
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NYC-WTC_000155456
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NYC-WTC_000155430
Technical correspondence addressing asbestos air sampling methodology and pump flow rate specifications.
13 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.995
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.993
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.991
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.989
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000156050
Document tracking the chain of custody for environmental samples collected at 114 Liberty Street on August 22, 2002.
13 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.997
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000162815
Request for review of monitoring contractor specifications for air sampling, including sampling methodologies, limits of detection, and clearance criteria, with reference to prior…
13 shared non-person entities · 1 shared topics · similarity 0.991
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.989
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000162838
Correspondence regarding Schedule A forms and a draft scope of work for cleaning and air monitoring contracts at the site.
12 shared non-person entities · 1 shared topics · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.987
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.987
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NYC-WTC_000155258
Notice instructing that original World Trade Center documents must be preserved as evidence and not disposed of.
Filed in the same folder
NYC-WTC_000155259
Notice instructing that original WTC documents must be preserved as evidence and not disposed of.
Filed in the same folder
NYC-WTC_000155264
Letter from EPA official to a Congressional representative criticizing the adequacy of the 114 Liberty Street cleanup.
Filed in the same folder
NYC-WTC_000155286
Formal letter criticizing the EPA and DEP for alleged failures in cleaning asbestos and silica from 114 Liberty Street.
Filed in the same folder
NYC-WTC_000155293
Congressional press release citing evidence of persistent WTC dust contamination at 114 Liberty Street.
Filed in the same folder