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SOP No. 11.0 Sample Management <br />Also recorded on the COC is the signature of the person relinquishing custody, the date and time <br />that custody was relinquished, the name and address of the laboratory, and the name and phone <br />number of a contact person regarding the shipment. <br />A sample is considered in custody if it is: <br />1. In one's actual possession <br />2. In view, after being in physical possession <br />3. Locked so that no one can tamper with it, after having been in physical custody <br />4. In a secured area <br />The person responsible for custody of the sample prior to delivery of the samples to the <br />laboratory will sign the COC form, retain the last copy of the three-part COC form, document <br />the method of shipment, send the pink or second copy of the COC to the R2 Denver office, and <br />send the original copy of the COC form with the sample (in a Ziploc bag). Upon receipt at the <br />laboratory, the person receiving the samples will sign the COC form and return the second copy <br />to the Field Manager or Quality Assurance Manager or specified designee. Copies of the COC <br />forms and all custody documentation will be received and kept in the central files. The original <br />COC forms will remain with the samples until final disposition of the samples by the laboratory. <br />The analytical laboratory may dispose of the samples in an appropriate manner 60 to 100 days <br />after data reporting. After sample disposal, a copy of the original COC will be sent to the Field <br />Manager or Quality Assurance Manager or specified designee by the analytical laboratory to be <br />incorporated into the central files. <br />4/23/07 Page 8 of 11 R Squared Inc. <br />Attachment A