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January 30, 1987 <br />Project 116-1.5 <br />will be monitored according to Monitoring Order No. 82-148. California <br />Water Labs, of Modesto, California, has been authorized to perform ground <br />water sampling and chemical analyses. The wells will be sampled quarterly. <br />The ground water level in each well is measured and the wells are pumped to <br />remove a volume of water equal to five well volumes prior to collecting the <br />sample. <br />A positive displacement bladder pump will be used for well purging and' <br />sampling. All sampling equipment will be thoroughly steam cleaned between <br />wells to prevent cross contamination. <br />A new site specific plan for chemical analyses of ground water samples at <br />the Forward Landfill must be developed since it has been classified as a <br />RCRA site. The analyses included in the present ground water monitoring <br />program will be continued, and analyses will be added for all RCRA wastes <br />that have been accepted at the site. The new monitoring plan will be <br />included in the Site Closure Plan. <br />Quality Assurance/Quality Control <br />Additional Samples <br />Pump blanks and trip blanks will be used to provide information about <br />accidental or incidental contamination. Spiked samples will be used to <br />provide information about accuracy of results. Split samples will be used <br />to determine reproducibility. <br />Chain of Custody <br />A chain of custody record is a legal document that lists all samples <br />included in one specific shipment. The purpose is to track samples in <br />terms of those persons taking possesion of the samples from the time of <br />sampling to their arrival at the laboratory. Each person taking custody <br />of, or relinquishing samples is responsible for signing and dating the <br />chain of custody. Upon receipt by the laboratory Sample Custodian, the <br />"Received for Laboratory" space will be signed and dated. A sample of a <br />chain of custody record is included in 'California Water Labs, Mandatory <br />Quality Assurance Programa, p.51. <br />Sample Preservation and Transport <br />Samples are collected in appropriate containers with EPA recommended <br />preseratives. A summary of special sample handling requirements is <br />included in 'California Water Labs, Mandatory Quality Assurance Programa, <br />pp.53-54. This table addresses container types, sample size, storage, and <br />preservation. Samples are transported to the laboratory in ice chests <br />containing blue ice. <br />4 <br />