QA and field data requirements

Audits of each phase of the study should include personnel training, preparation of collection forms, application calibration, each sample collection procedure, sample transport, each type of chemical analysis, data recording, data entry, data verification and data storage. Data collection in the field is often tedious if automated logging devices are not in place. To ensure data integrity, the paper and ink used for field studies should be waterproof. Each data collection form should contain appropriate locations for information detailing the time and location of sample collection, sample transport and sample analysis. Data collection forms should be stored in an orderly fashion in a secure location immediately upon return of field teams from the field at the end of each day. It is also important for data quality for studies to collect necessary field data seven days per week when required. In our experience, poor study quality is likely when field sample and data collection do not proceed on weekends. 

Each data point must be transferred from data sheets into spreadsheets or databases. Verification of each datum should be performed by an individual who did not enter the data being verified. Audits of each phase of the study should be performed (i.e. preparation of collection forms, application calibration, each type of sample collection, sample transport, each type of chemical analysis, data recording, data entry, data verification and data storage). 

Data presentations should include the parent compound and all toxic transformation products. This is particularly important for oxidation of sulfide linkages to sulfoxides or sulfones. These products are often equally toxic to the parent with increased availability. Attention should also be given to oxidative desulfuration of phosphorothionate esters. 

The data in each table and figure of reports submitted to sponsors should be verified by QA personnel. Team leaders, laboratory managers, field managers and the Study Director should meet routinely to discuss the meaning of the data as the study develops. This allows early discussions regarding data interpretation and allows several viewpoints to be explored, which ultimately strengthen the final report for the study. 

Crop protection chemicals undergoing field testing to determine dissipation, wildlife exposure and toxicological effects will have undergone extensive laboratory tests to 

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