EPA review letter, 133-135 Greenwich Street

NYC 9/11 Public Portal Document

Part II - Environmental Community Monitoring Plan 133-135 Greenwich & 21-23 Thames Streets Airtek Project 05-0701— Rev 2 September 16, 2005

Performs validation checks for timeliness, completeness and correctness for all hard copy data reports.

Reviews Quality Assurance Quality Control (QA/QC) measures such as percent recoveries, duplicate analyses and laboratory blanks reported in the hard copy data reports.

2.6 Records

2.&1 Records Created The following records may be created by this procedure: • Field Activity Logs • Sample and Composite Collection forms and/or field logs • Chain-of-Custody Forms • Shipping documents • Laboratory analysis results • Electronic files. 2.6,2 Records Retention The Airtek Quality Coordinator retains hard copies of all the records created by this procedure. The Data Manager maintains electronic records and ensures that periodic backups and archiving of electronic files is done. 2.6.3 Records Care and Maintenance The Airtek Quality Coordinator is responsible for the care, maintenance, and disposition of records according to Airtek record management policies and procedures. Records must be retained in an organized system so that the records are protected and easily accessed when needed. 2.6,4 When Records Transferred to Archivesfor Storage All records created by this procedure are reviewed after three years for transfer to the Airtek Archives.

3.0 QUALITY ASSURANCE PROCEDURES

All samples will be immediately placed in storage/transport containers or housings following completion of the sampling period and prior to being recorded on chain-of-custody forms and placed in chilled coolers. Samples will be preserved according to the specific method requirements and delivered to the laboratory within 24 hours of collection.

Daily field audits will be carried out by a designated QA Coordinator to ensure compliance during the performance of the sampling procedures. QA Coordinator will note and will bring to the attention of the Field Manager and the Project Manager any deviations from the approved plans. All deviations will be recorded in the QA Coordinator's log and in the field notebook of the sampling team being audited.

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NYC-WTC 000134254