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3.8.3 Sample Labels Sample labels are filled out in waterproof ink at the time of sample collection and before the sample is placed in the cooler. an the label, the following information is written: sample ID; date and time; sample location and client; analysis and laboratory; preservative,if any; samplers'initials; and,project number. 3.8.4 Sample Custody A chain-of-custody form is filled out as soil and groundwater samples are collected, so that samples do not have to be removed from the cooler. No sample will be placed in the cooler before all documents will be completed. The form is checked for completeness at the end of the day and signed. It is then hand-delivered with the samples to the laboratory, or placed in a sealable plastic freezer bag and taped to the inside lid of the cooler if shipped. Information on the chain-of-custody form includes: sample date and time; sample ID and location; matrix; number of containers; required analyses; preservative, if any; instruction for composite samples; turnaround time; project manager; project number; project name and location; client and laboratory names; and sampler signatures. Immediately after collection, soil and groundwater samples will be labeled and placed in an iced cooler at.4 degrees C (samples will never be allowed to freeze) for delivery or shipment to the laboratory. All samples will be analyzed as soon as possible, without exceeding the prescribed holding time. A chain-of-custody form, as described above, will be filled out and submitted to the laboratory. 3.8,5 Laboratory Operations A California DHS-certified hazardous materials testing laboratory will be used for all analyses for soil and groundwater samples. This laboratory will be used for all analyses of soil and groundwater samples, will be responsible for maintaining custody of the samples, and responsible for maintaining all associated records documenting that s custody. Upon receipt of the samples, the laboratory will check the original chain-of- custody documents and compare them with the labeled contents of each sample container for accuracy and traceability. The laboratory will check all sample containers for -- integrity, and will note any observations on the original chain-of-custody record; the chain-of-custody form will be signed, dated, and timed by the laboratory. Each sample will be logged into the laboratory by assigning it a unique sample number. All samples �- received ,s part of the same shipment will receive the same work order. Each container of the saniple is identified by appending sequential letters to the end of the sample ID. The laboratory number and the sample ID number will be recorded on the laboratory report. Samples will be stored and analyzed according to approved EPA and DHS methods. .. 3.9 Report Preparation A written report summarizing this investigation will be submitted after all field operations and laboratory analyses are completed. The main body of the report will include the following items; a site history including current tankage, size, type, and -12- w., 972-32.81 318191