Caltest's philosophy is to generate scientifically sound, legally defensible data of known quality. The implementation of our QA plan puts a strong emphasis on traceability of the data, assuring that sufficient detail is recorded and accessible for future review. Caltest is certified under the National Environmental Laboratory Accreditation Program (NELAP), and the State of California Environmental Lab Accreditation Program (ELAP). Compliance with these programs, and the related audits for these certifications add to the defensibility and integrity of the data we produce. Our goal is to provide method compliant data that is suitable for the purpose for which the sample was collected. SOPs are used for all processes in the lab. They are reviewed and updated by our QAO. A complete copy of our Quality Assurance Manual describing the protocols and procedures we use is available upon request.