Field logbooks

Document the sampling points in the field logbook fill out the COC Form. 

Calibrate all field portable meters, probes, and the PID according to manufacturer s specifications. Record calibration information in the field logbook. 

Take the field measurements directly in the water at the sampling point and record them in the field logbook or collect a volume of water in an unpreserved container and measure the field parameters once in the work area ashore. 

If sampling for the NPDES permit compliance, collect a sample into a plastic cup and measure pH and temperature. Record the readings in the field logbook. 

Document the sampling point condition (discoloration, rough surface, etc.) in the field logbook. 

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. 

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