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• Test Methods for Evaluating Solid Waste: Physical/ <br />C.bemical Methods (U.S. EPA, EPA SW -846, 3rd edition, <br />November 1986) <br />The laboratory selected to perform the analytical work will be certi- <br />fied by the California Department of Health Services as qualified to <br />perform the selected analyses. Laboratories will be reviewed by the <br />County of San Joaquin to verify that an adequate quality control pro- <br />gram is followed. <br />CHAIN -OF -CUSTODY CONTROL <br />The following procedures will be used during sampling and analytical <br />activities to provide chain -of -custody control during transfer of sam- <br />ples from collection through storage. Recordkeeping activities and <br />tools will include: <br />• Field logbook for documenting field activities <br />• Sample labels to identify individual samples <br />• Chain -of -custody record for documenting transfer and <br />possession <br />• Laboratory analysis request sheet for documenting analy- <br />sis to be performed <br />In the field, the sampler will record the following information in the <br />field logbook for each sample collected: <br />• Project number <br />• Client name <br />• Source of sample (i.e., well number) <br />• Well accessibility and integrity <br />• Time and date <br />11 <br />