NYC 9/11 Public Portal Document
spaces greater than 160 square feet and less than 25,000 square feet 5 air samples will be
collected. For spaces greater than 25,000 square feet, 1 air sample will be collected for
each 5,000 square feet. Sampling CQUipincnt shdll be pldccd fioiii obstiTictions* llic
sampling cassette mustbepfeteed on a ti ipod directed downward at a 45 degree angle and
not taped to existing surfaces.
e. Air samples shall be collected in accordance with the procedures specified in NIOSH 7400
Method for PCM and 7402 for TEM. Air sampling cassettes need to be monitored to
ensure pumps are not clogging by monitoring flow rates. The minimum sample volume
required is 3600 liters.
f. Wipe samples will be collected at 10 percent ofthe residences where sampling only has
been requested, up to a maximum of 50 units Units should be defined, as instructed by
EPA. What arethe criteria for selection? This sampling will consist of the collection
of one wipe sample each for dioxin, total metals and mercury (a separate wipe
sample is required for each parameter). Metals and mercury wipe samples will be
collected in accordancewith procedures specified in HUD Appendix 13.1. Dioxin
wipe samples will be collected in accordance with the procedures specified in
ASTMD 6661-01. What are_the criteria for where in the residence the wipe sample is
collected? The methods and analytes should also be listed in the second page as noted
previously.
g- The contractor shall document all the necessary information regarding sampling activities,
fill out all field logs, data sheets, and chain-of-custody forms. The contractor shall use F2L
for all sample and chain-of-custody documentation. Samples must be labeled and
accompanied with completed chain-of-custody forms before shipping to the designated
laboratory. The label must include the EPA Proj ect Tracking Number. Samples will be
packed, sealed and shipped to EPA Contract Laboratory for analysis.
h. All information must be maintained using the secure EPA website (url, user name and
password to be provided by EPA). Dates for monitoring and/or cleaning shall be provided
to EPA electronically in an EPA approved format within 24 hours. Information on sampling
activities (date, sample ID) shall be provided to EPA, via the website, within 24 hours of
completion of sampling.
Deliverables
The Proj ect Monitor shall review all deliverables prior to submission to EPA. The review shall
assure that each deliverable is accurate and complete, technically sound, and free ofclerical errors.
The Project Monitor shall record equipment used to collect the sample (Icafblower, fan, etc.) and
size of space daily in the field notebook. In addition, date, start and completion dates for the
cleaning, sample media, flow media type, flow rates (start/final), flow rate (average), time
(start/finish), total elapsed time (min), calculated sample volume (L), pump fault, weather, units, QC
samples (lot blank) sampling dates and sample identification numbers (sample IDs), complete chain-
of-custody forms, EPA Project Tracking Numbers and laboratory address shall be altered into an
agreed upon electronic format or website approved by EPA within 24 hours of activity.
NYC-WTC_000139566
OCR can misread numbers and units. Confirm readings against the page image before using them.