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Attachment E-1 <br />Contamination Measurement Methodology: Single Loads <br />For example, the following simplified scenario involves three samples. For the <br />purposes of this example, only the weights of the component carpet are <br />shown. <br />Sample 1 I Sample 2 I Sample 3 <br />Weight (c) of carpet 5 3 4 <br />Total Sample Weight (w) 80 70 90 <br />_ 5+3+4 <br />rc°�" — — 0.05 <br />80+70+90 <br />To find the composition estimate for the component carpet, the weights for <br />that material are added for all selected samples and divided by the total <br />sample weights of those samples. The resulting composition is 0.05, or five <br />percent (5%). In other words, five percent (5%) of the sampled material, by <br />weight, is carpet. This finding is then projected onto the stratum being <br />examined in this step of the analysis. <br />Collection Services Franchise Agreement <br />with Recology San Mateo County <br />City of Redwood City <br />ATIRVAGRIBOMM54/Recology of San Mateo <br />Attachment E-1 <br />Contamination Measurement Methodology <br />Page 7 of 14 <br />