NYC-WTC_000149432
DEP asbestos project notification form and inspection report dated December 12, 2002.
23 shared non-person entities · Same agency, volume and box · similarity 0.971
machine-extracted · confidence unavailable · Check page ↗Document / 85 pages
EPA air monitoring chain of custody, Jan 2003
Machine-extracted title · confidence 95%A chain of custody cover sheet for air monitoring samples sent to the EPA Region 1 laboratory in January 2003.
NYC-WTC_000149346–000149430Folder label: “AIR MONITORING - LAB”
Page image
OCR text
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
ASBESTOS and OTHER FIBERS by PCM: METHOD 7400, Issue 2, dated 15 August 1994 - Page 2 of 15
REAGENTS: EQUIPMENT:
1. Acetone,* reagent grade. 1. Sampler: field monitor, 25-mm, three-piece 2. Triacetin (glycerol triacetate), reagent grade. cassette with ca. 50-mm electrically conductive extension cowl and cellulose ester filter, 0.45- to 1.2-pm pore size, and backup pad. NOTE 1: Analyze representative filters for * See SPECIAL PRECAUTIONS. fiber background before use to check for clarity and background. Discard the filter lot if mean is >5 fibers per 100 graticule fields. These are defined as laboratory blanks. Manufacturer-provided quality assurance checks on filter blanks are normally adequate as long as field blanks are analyzed as described below. NOTE 2: The electrically conductive extension cowl reduces electrostatic effects. Ground the cowl when possible during sampling. NOTE 3: Use 0.8-pm pore size filters for personal sampling. The 0.45-pm filters are recommended for sampling when performing TEM analysis on the same samples. However, their higher pressure drop precludes their use with personal sampling pumps. NOTE 4: Other cassettes have been proposed that exhibit improved uniformity of fiber deposit on the filter surface, e.g., bellmouthed sampler (Envirometrics, Charleston, SC). These may be used if shown to give measured concentrations equivalent to sampler indicated above for the application. 2. Personal sampling pump, battery or line- powered vacuum, of sufficient capacity to meet flow-rate requirements (see step 4 for flow rate), with flexible connecting tubing. 3. Wire, multi-stranded, 22-gauge; 1", hose clamp to attach wire to cassette. 4. Tape, shrink- or adhesive-. 5. Slides, glass, frosted-end, pre-cleaned, 25 x 75-mm. 6. Cover slips, 22- x 22-mm, No. 1-1/2, unless otherwise specified by microscope manufacturer. 7. Lacquer or nail polish. 8. Knife, #10 surgical steel, curved blade. 9. Tweezers.
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
NYC-WTC_000149406
OCR can misread numbers and units. Confirm readings against the page image before using them.
NYC-WTC_000149406Source: NYC Law Department, mirrored locally
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NYC-WTC_000139257
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Internal tracking document for managing reports, comments, and actions related to environmental compliance cases.
11 shared non-person entities · 1 shared topics · similarity 0.963
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000138897
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Chain of custody documentation for cleanup and monitoring samples at 114 Liberty distributed among project team members.
16 shared non-person entities · similarity 0.961
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155394
Transmission of cleanup and environmental monitoring documentation for 114 Liberty post-WTC dust remediation project.
14 shared non-person entities · similarity 0.961
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