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f <br /> . Sample Containers and Preservation <br /> Sample containers vary with each type of analytical parameter Container types and materials <br /> were selected to be nonreactive with the particular analytical parameter tested <br /> Sample Handling <br /> Sample containers were labeled immediately prior to sample collection Samples were kept cool <br /> with cold packs until received by the laboratory At the time of sampling, each sample was <br /> logged on an ARCO chain-of-custody record that accompanied the sample to the laboratory <br /> Samples that required overnight storage prior to shipping to the laboratory were kept cool <br /> (4°Celsius) in a refrigerator The refrigerator was kept in a warehouse, which was locked when <br /> not occupied by a Pinnacle employee A sample/refrigerator log was kept to record the date and <br /> time that samples were placed into and removed from the refrigerator <br /> Samples were transferred from Pinnacle to an ARCO-approved laboratory by courier or taken <br /> directly to the laboratory by the environmental sampler Sample shipments from Pinnacle to <br /> laboratories performing the selected analyses routinely occurred within 24 hours of sample <br /> collection <br /> Sample Documentation <br /> The following procedures were used during sampling and analysis to provide chain-of-custody <br /> control during sample handling from collection through storage Sample documentation included <br /> the use of the following <br /> • Water sample field data sheets to document • Cham-of-custody record sheets for <br /> sampling activities in the field documenting possession and transfer of <br /> • Labels to identify individual samples samples <br /> • Laboratory analysis request sheets for <br /> documenting analyses to be performed <br /> Field Logbook <br /> In the field, the sampler recorded the following information on the water sample field data sheet <br /> (see Figure A-2) for each sample collected <br /> • Project number • Calculated and actual purge volumes <br /> • Client's name • Purging equipment used <br /> • Location • Sampling equipment used <br /> • • Name of sampler • Appearance of each sample (e g , color, <br /> turbidity, sediment) <br /> CP1D IQMR\ARC011sTQ9912130Q199 DOC-98Vsg i A-4 P <br />