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E-mails 2003 M. Gilsenan
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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.
1
NYC-WTC_000162890
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