2008-03-10_GENERAL DOCUMENTS - M1977247

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t ACZ Laboratories, Inc. August 10, 2007 Quality Assurance Plan Version 12 SOPAD018.08.07.12 Page 28 of 96 7 SAMPLE CUSTODY & SAMPLE HANDLING Sample custody begins with the receipt of sample containers from the client and continues beyond preparation and analysis to the proper disposal of primary and secondary sub-samples. Complete and accurate documentation must be provided at all stages of custody. There are many key elements to sample custody including laboratory security, chain of custody records, sample storage, internal custody logs, sample tracking within the laboratory, control of subcontracted work, and sample disposal. 7.1 Laboratory Security A secure facility is essential to maintaining sample and data integrity and to providing safety to employees and visitors. ACZ has an electronic security system based on anti-pass back protocols, which controls and limits access to only authorized personnel. The following steps have been taken to ensure this security: • All entryways are armed and a proximity reader at the east entrance and west shipping entrance allows access to an employee only after he/she passes their card. • Employees may enter/exit only through the west door at Log-In and the east door next to the , lunchroom. • During normal business hours, public access into the building can be made at the front entrance , and the west shipping entrance. Both doors are equipped with a buzzer. • The outside doors at the west shipping entrance remain unlocked; however, the doors between the vestibule area and sample receiving area are equipped with an anti-pass back system. • Building access is limited to specific hours of the employee's shifts. • All employees are required to use their access cards to enter and exit the building. , • If any employee does not have their access card, they must notify ACZ's CFO as soon as possible and must sign in and out during the day using the visitor's register at the front desk. This ensures a record is maintained of which personnel were in the building at any time. • If employees fail to use their card, the anti-pass back system denies access for that card the next time it is used. The employee must report to ACZ's CFO if this occurs. • Visitors must enter and exit through the main entrance and must sign the register at the front desk upon arrival and before departure. • Lab personnel must escort visitors as long as they remain on the premises. I • Emergency Exit doors are to be used only for emergency purposes. If a door is opened, a siren alarm will sound. • It is against company security policy to loan or transfer access cards to anyone, including other ACZ employees. Employees may not allow a non-shift employee to enter the building. • Vendors and delivery services enter the building via the west shipping entrance. 2773 Downhill Drive Steamboat Springs, CO 80487 970-879-6590 www.acz.com 1