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Ref. No. [UMCES] CBL 2016-015
ACT VS16-06
56
•
The field tests at HIMB during September 28, 2015 – October 1, 2015.
The audits were conducted in accordance with the procedures described in EPA's
Guidance
on Technical Audits and Related Assessments for Environmental Data Operations (EPA QA/G-7)
.
The audits included a review of staff, test procedures (sample collection, sample analysis, data
processing, etc.), facilities, and documentation.
The TSA’s’ findings for the two field tests were positive and indicated that these
components of the DO sensor verification were being implemented in a manner consistent with the
Test Protocols and SOPs. Minor deviations, such as schedule changes, were documented in
laboratory records. None of the deviations in the Test Protocols had any effect on data quality for
the verification and no corrective action was required. All phases of the implementation of the test
reviewed during the TSA were acceptable and performed in a manner consistent with ACT data
quality goals. The overall quality assurance objectives of the test were met.
ACT personnel are well-qualified to implement the verification, and demonstrated expertise
in pertinent procedures. Communication and coordination among all personnel was frequent and
effective. ACT’s internal record keeping and document control is well organized. The ACT staff
understands the need for QC, as shown in the conscientious development and implementation of a
variety of QC procedures.
All samples and instrument measurements were collected, analyzed and cataloged as
described in the Test Protocols and SOPs. Examination of maintenance and calibration logs
provided evidence of recent and suitable calibration of sampling and analytical equipment.
Data Assessments
Data review is conducted to ensure that only sound data that are of known and documented
quality and meet ACT technology verification quality objectives are used in making decisions
about technology performance. ACT’s data review processes are based in part on two EPA
guidance documents:
Guidance on Environmental Data Verification and Data Validation
(QA/G-
8) [EPA, 2002] and
Guidance on Technical Audits and Related Assessments for Environmental
Data Operations
(QA/G-7) [EPA, 2000].
At the outset of the assessment phase, the data were verified and validated to evaluate
whether the data have been generated according to the Test Protocols, satisfy acceptance criteria,
and are appropriate and consistent with their intended use of evaluating the performance of the test
sensors. Data verification evaluates the completeness, correctness, and consistency of the data sets
against the requirements specified in the Test Protocols, measurement quality objectives (MQOs)
in the ACT Quality Assurance Project Plan (QAPP), and any other analytical process requirements
contained in SOPs. The ACT QA Manager reviewed the reference sample data sets from all field
sites and verified that the sampling and analysis protocols specified in the Test Protocols were
followed, and that the ACT measurement and analytical systems performed in accordance with
approved methods, based on:
•
The raw data records were complete, understandable, well-labeled, and traceable;
•
All data identified in the Test Protocols were collected;
•
QC criteria were achieved; and
•
Data calculations were accurate.