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3.7 Data Analysis and Documentation <br /> Park will evaluate the test results and provide recommendations for any soil remediation that <br /> be necessary. We will provide a report documenting the work completed, copies of all <br /> laboratory reports and conclusions and recommendations. <br /> 4.0 QUALITY ASSURANCE PLAN <br /> The following sections describe field and analytical quality assurance procedures to be <br /> followed during this investigation. <br /> 4.1 Sample Collection and Handling Protocol <br /> Proper sampling and handling are essential to assure the quality of the data obtained from a <br /> sample. Each sample will be collected in a brass tube, preserved correctly for the intended <br /> analysis, and stored for no longer than the permissible holding time prior to extraction and/or <br /> analysis. <br /> 4.2 Sample Identification <br /> Sample identification and chain of custody procedures are designed to assure sample quality <br /> and to document sample possession from the time of collection to the time of ultimate sample <br /> disposal. The container for each sample submitted for analysis will have a label affixed with <br /> the identifying number or the number will be inscribed directly on the container, if feasible. <br /> Samples will be analyzed for the analyses requested. The analytical laboratory will assign a <br /> separate number unique for that sample for internal sample coordination and identification. <br /> A description of the sample including the sample number and other pertinent information <br /> regarding its collection and/or geologic significance will be written in field notes and/or a <br /> geologic boring log prepared by the site geologist. These field documents will be kept in a <br /> permanent project file. <br /> A properly completed chain of custody form will be submitted to the analytical laboratory <br /> along with the sample. The laboratory's assigned number will be properly entered on the <br /> form. A quality control officer at the laboratory will verify the integrity of the samples <br /> submitted, proper sample volume, correctness of containers used, and a properly executed <br /> chain of custody form. Pertinent information will be entered into a log book kept by the <br /> laboratory. <br /> 4.3 Analytical Quality Assurance <br /> In addition to routine calibration of analytical instruments with standards and blanks, the <br /> analyst is required to run duplicates and spikes to assure an added measure of reliability and <br /> precision. <br /> 5003J1 5 <br />