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SIERRA <br /> The chain-of-custody form includes the project number, analysis requested, sample ID, <br /> date analysis and the SES field person's name. The form is signed and dated (with the transfer <br /> time) by each person who yields or receives the samples beginning with the field personnel and <br /> ending with the laboratory personnel. <br /> A trip blank and bailer blank accompanies each sampling set, or 5% trip blanks and 5% <br /> bailer blanks are included for sets of greater than 20 samples. The bailer blank is prepared by <br /> pouring previously boiled water into a steam-cleaned Teflon bailer prior to sampling a well. The <br /> trip and bailer blanks are analyzed for some or all of the same compounds as the ground water <br /> samples. <br /> GW'rRSAMP.SOP <br /> i�. <br />