Technical discussion regarding discrepancies in NIOSH method flow rates and requirements for large sample volumes at 114 Liberty Street.
NYC-WTC_000162890–000162897Folder label: “E-mails 2003 M. Gilsenan”
OCR status: ok · source: pdftotext
NYC 9/11 Public Portal Document
Gilsenan, Michael From: Maddaloni. Mark@epamail .epa.gov Sent: Thursday, February 06, 2003 6:10 PM To: Theodorellys, Penny Cc: [email protected]; Radhakrishnan, Krish; Gilsenan, Michael Subject: Re: 114 Liberty Street Monitoring Contractor Specifications
114 Liberty St Monitoring 2 6... Penny, There are still a few loose threads re: the asbestos air sampling rates.
Page 2 (Equipment) The protocol calls for pumps with a flow rate capacity of 2 - 10 liters/min but bullet #6 on page 5 (NIOSH 7400 method) calls for a flow rate of 10 - 15 liters per min. On a related subject, the NIOSH 7400 method specifies a flow rate of .5 - 16 liters/min (and a minimum volume of 400 liters) but we want the large (3,600 liter) sample volumes, and therefore high flow rates (approx 10 liters/min), to attain the necessary detection limits for the TEM analysis.
Page 4 (Asbestos Air Monitoring) bullet # 2 The protocol calls for a flow rate not to exceed 3 liters/min. At that rate it would take 20 hours to get the desired sample volume of 3,600 liters.
"Theodorellys, Penny" To: Mark Maddaloni/R2/USEPA/US@EPA, Charles <ptheodorellys@de Nace/R2/USEPA/US@EPA p.nyc.gov> cc: "Radhakrishnan, Krish" <[email protected]>, "Gilsenan, Michael" 02/06/2003 02:53 <mgilsenan@dep .nyc.gov> PM Subject: 114 Liberty Street Monitoring Contractor Specifications
<<114 Liberty St Monitoring 2 6 O3.doc»
Attached please find the revised monitoring specification with your comments included. I am awaiting the attachments referenced in your correspondence and will include your reporting guidelines. We will be moving forward quickly and I would appreciate any other feedback as soon as possible.
Thanks again, the inclusion of the language for the changes was very helpful.
Please confirm receipt and review of this document.
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NYC-WTC_000162890
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NYC-WTC_000162853
Discussion regarding revisions to monitoring work specifications, including flow rate issues and asbestos sampling protocols.
13 shared non-person entities · 1 shared topics · Same agency, volume and box · 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 · Same agency, volume and box · similarity 0.990
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 · Same agency, volume and box · similarity 0.990
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · Same agency, volume and box · similarity 0.987
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155430
Technical correspondence addressing asbestos air sampling methodology and pump flow rate specifications.
13 shared non-person entities · 1 shared topics · similarity 0.999
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155453
Discussion regarding corrections to asbestos sampling flow rate language in the 114 Liberty Street work plan.
13 shared non-person entities · 1 shared topics · similarity 0.994
machine-extracted · confidence unavailable · Check page ↗13 shared non-person entities · 1 shared topics · similarity 0.991
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155617
Distribution of revised draft scopes of work documents for the 114 Liberty Street project.
13 shared non-person entities · 1 shared topics · similarity 0.991
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155443
Request to verify sampling methodologies and detection limits in the 114 Liberty Street monitoring specifications.
13 shared non-person entities · 1 shared topics · similarity 0.990
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 · similarity 0.989
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155138
Documentation of sample chain of custody procedures for the 114 Liberty Street site.
13 shared non-person entities · 1 shared topics · similarity 0.988
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155422
Distribution of updated monitoring specifications and related documents for the 114 Liberty Street project.
13 shared non-person entities · 1 shared topics · similarity 0.987
machine-extracted · confidence unavailable · Check page ↗Similar subjects in other documents. Similarity does not establish the same event, measurement or conclusion.
NYC-WTC_000155430
Technical correspondence addressing asbestos air sampling methodology and pump flow rate specifications.
Similarity score 1.000 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000140385
Specific instructions for collecting bulk dust samples, labeling containers, and repairing insulation disturbed during sampling activities.
Similarity score 0.954 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155407
Review of monitoring contractor specifications for asbestos and dioxin sampling at 114 Liberty Street.
Similarity score 0.954 (not a probability)
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.
Similarity score 0.953 (not a probability)
machine-extracted · confidence unavailable · Check page ↗NYC-WTC_000155443
Request to verify sampling methodologies and detection limits in the 114 Liberty Street monitoring specifications.
Similarity score 0.946 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Similarity score 0.946 (not a probability)
machine-extracted · confidence unavailable · Check page ↗Machine-extracted building matches; verify each source. Buildings, never households.
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