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' Ground Water Sampling <br /> o Well sampling sequence, <br /> D Types of sample bottles used and sample identification numbers, <br /> U Preservatives used and pH verification, <br /> o Parameters requested for analysis, <br /> o Field observations of sampling event, <br /> o Name of collector, <br /> O Climatic conditions, including air temperature, and <br />' U Internal temperature of field and shipping containers <br /> 264 Chain-of-Custody Record <br />' The tracing of sample possession will be accomplished by use of a <br /> cham-0f-custody record sheet A chain-of-custody sheet should be filled out and <br /> should accompany every sample It should also contain enough copies so that <br /> each person possessing the shipment receives his/herown copy Ata minimum, <br /> the record should contain the following information <br /> O Sample number, <br /> O Signature of collector, <br />' O Date and time of collection, <br /> o Sample type (e g , ground water), <br /> o Identification of sampling point (well), <br />' o Number and types of containers, <br /> O Parameters requested for analysis, <br /> O Preservatives used, <br />' O Signature of persons involved in the chain of possession, <br /> U Inclusive dates and times of possession, <br /> O Internal temperature of shipping container when samples were sealed into <br /> the container for shipping, <br /> o Internal temperature of container when opened at the laboratory, and <br /> 26 <br />