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Field Logbook <br />In the field, the sampler records the following information on the Water Sample Field Data Sheet <br />(Figure A-2) for each sample collected: <br />• Project number <br />• Client's name <br />• Location <br />• Name of sampler <br />• Date and time <br />• Well accessibility and integrity <br />• Pertinent well data (e.g., casing diameter, depth to water, well depth) <br />• Calculated and actual purge volumes <br />• Purging equipment used <br />• Sampling equipment used <br />• Appearance of each sample (e.g., color, turbidity, sediment) <br />• Results of field analyses (temperature, pH, specific conductance) <br />• General comments <br />The field logbook is signed by the sampler. <br />Labels <br />Sample labels contain the following information: <br />• Project number <br />• Sample number (i.e., well designation) <br />• Sampler's initials <br />• Date and time of collection <br />• Type of preservative used (if any) <br />Groundwater Monitoring A-6 Department of Public Works/Solid Waste <br />County of San Joaquin <br />