Field records

Field records document field measurements and field conditions at the time of sampling. These are permanent project records that are stored with the rest of the project files in a central location after the project is completed. A chemist, a geologist, or an engineer often reviews the field records to order to interpret the collected data in context of field conditions during sampling. Accurate and relevant field records allow efficient resolution of issues related to field and laboratory data interpretation and quality, whereas sketchy and inaccurate records raise more questions than they answer. 

At a minimum, field records include the COC Form and field logbooks. Matrix-specific sampling forms, similar to one shown in Appendix 16, may often supplement logbooks. Another form of field records is a photolog that may be created for certain projects. 

The following common rules apply to all field records  

The COC Form, which is started in the field and completed at the laboratory, serves as a legal record of sampling and as a request for analysis. It contains only the basic field information that is necessary for the laboratory to correctly identify and analyse the samples. An incomplete or incorrect COC Form usually causes delays at the 

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PYI —Collection of records that normally consist of matching types of fields. Records in a file may be accessed sequentially (the entire file must be read until the needed record is reached) or randomly (the record contains a key field, which determines its physical location in storage). 

The records required for field residue study authentication are the same records that would be required to reconstruct the study. Although this total volume of information is a necessary part of the GLP study record, the field summary report is a small fraction of that record. The field summary report is simply the information the EPA reviewers wish to see as they consider the data and determine how well they represent the crop situation for which the pesticide tolerance is being requested. At the current time, the field summary report should contain the information requested on pp. 48 and 49 of OPPTS 860.1500. The summary report for each test site in a study will typically form an appendix in the final study report. This information must be accurately extracted from the raw data notebook or field record and must be audited by... 

A9 Documents and records 3.10 Field records 4.3.7 Data package preparation... 

Carry a toolbox or a sturdy plastic container with general supplies that are always needed in the field (field record forms, writing paper, pens, shipping tape, a tape measure, a compass, etc.). 

Have a traceable custody chain and reliable field records... 

In the course of sample tracking, data evaluation, and interpretation, field sample IDs may be entered into several different field forms, spreadsheets, and data bases, and appear on maps and figures as identifiers for the sampling points. Because the field records and computer data entry during sample receiving at the laboratory are done for the most part manually, errors in sample ID recording are common. To reduce data management errors, sample numbers must be simple, short, and consecutive. 

Complete field records in the field logbook fill out the COC Form. 

While field crews collect the samples, the chemist verifies their types and quantities by comparing the COC Forms, Sample Tracking Logs, and other field records to the SAP specifications. The chemist interacts with the field crews for the resolution of errors in the sampling point selection, sample containers and preservation or COC Form errors. The chemist also serves as a point of contact with the laboratory, if any technical issues arise during sample analysis. 

The chemist also evaluates field duplicate data to assess the total sampling and analysis precision of water and the inherent sample variability of soil as a measure of the sampling point representativeness. From the Sample Tracking Log or other field records the chemist identifies field duplicate samples and evaluates the correlation between the results of the primary sample and the duplicate. 

The project team may conduct a review of field records to verify that deviations from the SAP during sampling did not erode data relevancy. Samples collected... 

The DQAR may be part of a general report that details all project activities, findings, and conclusions, or be a separate document that becomes part of the permanent project record. Typically, the chemist who conducts DQA prepares the DQAR. The information needed for the DQAR preparation comprises field records, laboratory data, data evaluation summaries, sample data tabulated according to their use, and results of statistical testing. 

Clearly identify data packages field records records of communication with the laboratory data evaluation checklists and summary reports and archive them together for future reference. 

Database schemas are centrally stored and controlled. Data definitions (schema) are stored in the centralized data dictionary. The user s view(s) of the database is defined and stored in the same data dictionary. Programs are given access to individual data fields, records, sets and areas of the database on a need-to-know basis. The database administrator creates and maintains integrity of the database schemas. The benefits of this approach are ... 

Data Sheet 4.1 Field record of small mammals caught in traps scented with predator odor... 

Application of Near-Field Recording to High-Resolution Imaging... 

In this chapter, we also describe the near-field recording technique. We can greatly reduce the bit size by using near-field optics. " ... 

Various materials have been examined for the media of near-field recording, Martin el al and Betzig et used optomagnetic material, and Irie used diarylethene derivatives. ... 

Urethane-urea copolymer materials shown in Figure 16,12 are also promising for the application of near-field recording. " Figures 16.25a and... 

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