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Appendix A                                                                                           CEMS Inspection Sheet

10.  Maintenance Log Review

What to Check

Observation

Do the log entries sufficiently describe the action taken?  Are the entries understandable?

Does the log show maintenance checks at the frequency identified in the QA/QC Plan?  Are all records available (see Table C)?

Identify recurring failures or malfunctions recorded in the log.

Are malfunctions resolved as specified in the QA/QC Plan?

Do events in the maintenance log correspond to reported missing data periods in the quarterly reports?

Are there repeated adjustments to the zero or span?

Have system parts or components been replaced? If so has the proper recertification or diagnostic testing been performed?

Does the log show any pre-RATA adjustments?

Table C:

Maintenance Record Requirements (Appendix B ' 1.1.3)

The following records are required by the QA/QC Plan provisions of Part 75:

!date, time, and description of any testing, adjustment, repair, replacement, or preventive maintenance action performed on any monitoring system.

!records of any corrective actions associated with a monitor=s outage period.

!any adjustment that changes a system=s ability to record and report emissions data (e.g., changing of flow monitor or moisture monitoring system polynomial coefficients, K factors or mathematical algorithms, changing of temperature and pressure coefficients and dilution ratio settings).

!a written explanation of the procedures used to make the adjustment(s) shall be kept.

Part 75 Field Audit Manual - July 16, 2003                                                                                                       Page A-10

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