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Page 1 of 24 <br />SOP NUMBER 28.0 Analytical Data Validation <br />1.0 PURPOSE AND SCOPE <br />This standard operating procedure (SOP) describes procedures to be used to conduct an <br />independent review of environmental analytical laboratory data so that data of known and <br />documented quality will be used for all reporting and environmental decision making at the <br />Powertech Mine <br />This SOP includes two levels of data review, evaluation of sample-specific parameters and <br />evaluation of laboratory performance parameters. All data generated for the Powertech Mine <br />will receive an evaluation of sample-specific parameters. In addition, 10% of the data packages <br />received (per analysis type per sampling event/episode) containing data will also receive a <br />review of laboratory performance parameters. <br />This SOP addresses the protocols that will be followed for the sample-specific parameters and <br />laboratory performance parameters data review levels. The review of sample-specific <br />parameters is described in Section 4.1. The review of laboratory performance parameters is <br />discussed in Section 4.2. In addition, Section 5 discusses the associated documentation. <br />2.0 RESPONSIBILITIES AND QUALIFICATIONS <br />The Project Manager or QA Manager has the overall responsibility for implementing this SOP. <br />They will be responsible for assigning appropriate environmental staff to implement this SOP <br />and for ensuring that the procedures are followed. <br />All personnel performing these procedures are required to be familiar with environmental data, <br />its generation, and its reporting. In addition, all personnel are required to have a complete <br />understanding of the procedures described within this SOP. Activity-specific training regarding <br />these procedures will be provided by the QA Manager or designee to personnel implementing <br />this SOP, as necessary. <br />All environmental staff are responsible for reporting deviations from this SOP to the Project <br />Manager or QA Manager. <br />3.0 LIST OF RELATED SOPS <br />There are no other SOPs that are directly related to this SOP. <br />4.0 DATA REVIEW PROCEDURES <br />As noted in Section 1.0, all analytical data used for reporting and environmental decision making <br />at Powertech's Mine will receive a review independent of the laboratory to ensure that data are <br />of known and documented quality. <br />The review of sample-specific parameters includes evaluating parameters that are sample related. <br />These include: case narrative comments, chain-of-custody and sample condition upon receipt, <br />holding times, method blank results, surrogate recoveries, matrix spike recoveries, laboratory <br />duplicate or spike duplicate analysis, post-digestion spike recoveries, ICP serial dilution analysis <br />agreement, internal standard performance, and results for field quality control samples (e.g. field <br />Powertech <br />R Squared Inc <br />Rev 28-1 JAB Attachment A <br />4/23/2007