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SOP No. 11.0 Sample Management <br />minimum of one field duplicate sample from each group of 20 environmental samples of a given <br />matrix. Specific locations for collection of field duplicate samples may be designated prior to the <br />beginning of sample collection. <br />7.0 DOCUMENTATION AND TRACKING <br />7.1 FIELD NOTES <br />Documentation of observations and data acquired in the field will provide information on the <br />acquisition of samples and also provide a permanent record of field activities. The observations <br />and data will be recorded with waterproof ink in a permanently bound weatherproof field <br />logbook with consecutively numbered pages and, if applicable, on field sampling data sheets. <br />The information in the field logbook will include the following as a minimum. Unless <br />information is recorded on a field sample collection form and that form is cross referenced in the <br />logbook entry. Additional information is included in the specific SOPS regarding the appropriate <br />data sheets. <br />• Project name <br />• Location of sample <br />• Date and time of sample collection <br />• Sample identification numbers and sample depth (if applicable) <br />• Description of samples (matrix sampled), composite or grab sample <br />• Analysis to be performed <br />• Number and volume of sample containers <br />• Description of QA/QC samples (if collected) <br />• Sample methods or reference to the appropriate SOP <br />• Sample handling, including filtration and preservation, as appropriate for samples <br />• Field observations <br />• Results of any field measurements, such as depth to water, pH, temperature, turbidity, and <br />conductivity <br />• Decontamination information <br />• Calibration information <br />• Personnel present <br />• Method of shipment <br />• Any deviations from SOPS <br />4/23/07 Page 7 of 19 R Squared Inc.