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Quality assurance (QA) and quality control (QC) and standard operating procedures (SOP) are separate components of a monitoring program. They work together to provide data of known quality. Together they minimize and quantify the error that is introduced in sampling, and allow the tracking of errors that might occur. QA/QC includes planning, assessment, reporting and making necessary changes to the water monitoring program to ensure quality data. The procedures defined in your Quality Assurance Project Plan (QAPP) will outline what is acceptable for your monitoring objectives. A QAPP may consist of as many as 25 different elements. |
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