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

Field documentation of samples, calibration, QC measures, and corrective action will also be reviewed. In addition, the Project QA Officer will conduct at least one review of data and record management systems at Purdue during the field monitoring period. During this review, the Project QA Officer will verify that the data management procedures are being followed. Any issues identified during these reviews will be discussed with appropriate personnel and addressed immediately.

7.2 Reports to Management

During project data collection, the Data Manager will be responsible for routine assessment and response actions as described above. If response actions are taken, the Data Manager will inform the Project QA Officer of the reason for these actions and the results. The Project QA Officer will then review this information to verify that the QAPP is being followed and to determine if changes to the QAPP are needed. If conditions requiring corrective action are identified during a review conducted by the Project QA Officer, a brief report will be issued to the Project Coordinator, EPA Region 2 and the Data Manager; however, corrective action will be initiated immediately based on verbal discussion during the review.

The draft and final project reports will contain all valid monitoring data expressed as hourly and daily values. The report will incorporate graphical representations of the location of all measurements taken. The report will also contain the numerical and qualitative results of all QC measures on all measurement systems and will compare them to the applicable acceptance criteria. In the event that data must be invalidated, the reason for data invalidation shall be identified with the resultant corrective action. In addition, the report will include a brief summary of corrective actions taken during field data collection. The report will discuss the impact of these corrective actions on data quality.

The Data Manager will provide copies of all data and reports to the Airtek Project Coordinator, the Airtek QA Officer, and to USEPA Region 2. Requests for copies of reports shall be directed to the Airtek Project Coordinator and the Owner for purposes of determining whether they contain Confidential Business Information. Reports and data shall otherwise be available for public distribution.

8.0 DATA VALIDATION AND USABILITY

All data generated under this QAPP will be reviewed and validated by the Data Manager. Original raw data review will be done within two business days after the data were recorded from measurement. Data will be validated and verified by comparison with instrumental performance parameters as identified in the applicable section of this QAPP or instrument operation manual.

Data will be evaluated for compliance with stated objectives for representativeness, precision, and accuracy. This will be done by comparing results of QC and calibration activities to the stated data quality criteria (Section 3). However, the evaluation process used to find and correct an error may not be defined in this QAPP because not all possible errors and corrections can be anticipated.

9.0 EXCEEDANCE NOTIFICATION

Notification

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NYC-WTC 000134262