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Geri <br /> GENESIS ENGINEERING 8 REDEVELOPMENT <br /> organic analyses. Therefore the containers must contain no headspace. Only one trip blank is <br /> used per sample container/cooler. <br /> Equipment Blank <br /> An equipment blank is a sample of the final rinse water following equipment <br /> decontamination. Equipment blanks are usually analyzed for the same parameters as the <br /> samples at that location. Equipment blanks will be collected at a frequency of 1 per 20 or <br /> fewer field samples(5%). <br /> Matrix Spike/Matrix Spike Duplicate <br /> Samples will be prepared for Matrix Spike/Matrix Spike Duplicates at a frequency of 1 per 20 <br /> or fewer field samples (5%). <br /> Duplicate Samples <br /> A duplicate sample is a single sediment sample divided into two equal parts or two <br /> groundwater samples collected independently at a single sampling location. Field duplicates <br /> will be identified so that laboratory personnel are unable to distinguish them from field <br /> samples. Duplicate samples will be collected at a frequency of 1 per every 10 or fewer(10%) <br /> field samples per matrix; with a minimum of one duplicate sample collected per sampling <br /> day. Duplicate samples are to be analyzed utilizing the same types of analyses as their <br /> associated field samples. <br /> 4.0 FIELD QUALITY CONTROL PROGRAM <br /> Field quality control will be provided through strict adherence to sampling protocol and <br /> decontamination procedures. <br /> 4.1 Control Parameters <br /> Control parameters of the field procedures consist of the same controls that govern analytical <br /> data. These parameters are controlled through the assessment of data by precision, accuracy, <br /> representativeness, and completeness. Control parameters consist of the following: <br /> • Decontamination of field equipment <br /> • Strict adherence to sampling protocol <br /> Lima Ranch 15 of 17 <br /> Site Characterization Work Plan Addendum <br /> April 2008 <br />