EPA work plan review, 133-135 and 21-23 buildings, August 2005

NYC 9/11 Public Portal Document

Part II - Environmental Community Monitoring Plan 133-135 Greenwich & 21-23 Thames Streets Airtek Project 05-0701— Rev 1 August 11, 2005

• Traceability of standards: o Gaseous pollutant concentration standards (in compressed-gas cylinders or in permeation tubes) traceable to a NIST-traceable reference material (NTRM) or to a NIST-certified gas manufacturer's internal standard (GMIS) o Ultraviolet photometers (for ozone) certified against a NIST-certified reference UV photometer at EPA o mass flow meters (inside multigas dilution/gas phase titration calibrators) certified traceable to NIST standards o flow calibrators (bubble meters and/or dry flow calibrators) certified NIST- traceable o temperature, pressure, etc. certified NIST-traceable • Multipoint calibrations: The sample collection staff notes the monitoring system's response to multiple known concentrations, adjusting the system if necessary to read correctly. This is done quarterly, after maintenance or repair and when a zero/span check is out of range. • Zero/span checks: The sample collection staff or an automated system records the monitoring system's response to pure air, then to a concentration near its upper range limit (at least once every 2 weeks).

• Precision checks: The sample collection staff or an automated system records the monitoring system's response to a known concentration of a roughly consistent value (every 2 weeks). (In practice, this is usually combined with the zero/span check.)

• Performance audits: o Quarterly audits: The IH Quality coordinator using a different calibrator and different gas standards (or a different photometer) notes the monitoring system's response to multiple concentrations. Normally, this is done quarterly for each monitor. • Data audit: Airtek Data Manager (not the operator of the monitoring system in question) verifies the highest and one random hourly reading each day for each parameter, and reviews the data for anomalies. al l

4.0 DATA REPORTS

The laboratories shall provide all deliverables in a format that will allow ready compilation and assessment of the data, as appropriate. The laboratory will report all quality control sample results for each batch of samples. The laboratory will not know which samples are duplicates and will report them as primary samples. Data for all samples will be provided with a copy of the Chain of Custody form. For each record sample, the laboratory report will include, at a minimum: • Sample identification number assigned by the field sampling team; • Date the sample was collected; • Date the sample was extracted; • Date the sample was analyzed; • List of all target analytes for the method that lists the following data for each target

NYC-WTC 000134972