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9 <br /> container storage facility, sample container preparation, the j sample storage refrigerator, and <br /> the cleanliness of the glassware preparation. ` c <br /> ,j 'r <br /> 1 <br /> The laboratory will maintain a written QA/QC Standard Operating Procedure (SOP) <br /> document, which is available upon request. The SOP describes in-house procedures to <br /> ensure the quality of analytical activities. Where not otherwise specified for particular <br /> analytical methods, general internal quality control checks iriclude'.kthe use of method blanks, <br /> 1 <br /> surrogate spikes, matrix spikes, and duplicates. <br /> 4 <br /> E <br /> f i <br /> +I` <br /> l <br /> f <br /> IJ <br /> 1 E i <br /> I <br /> k <br /> I� <br /> I <br /> A <br /> Ik <br /> .I <br /> 808-001.wkp/03-14-97/u/kcydaWworkpIan B-9 'I <br /> .I <br /> i <br /> I <br />