Sample Custody. The Contractor or subcontractor shall be responsible for maintaining sample custody requirements communicated by the Water Boards Project Managers at the time of sample receipt. The Water Boards Project Manager, at any time, shall include a custody tag with the sampling tag upon submittal to the Contractor for analysis of certain samples, hereinafter referred to as “evidence samples”. For evidence samples, the following special custody procedures shall be followed: 1. The Contractor shall designate one (1) full-time employee as a sample custodian and one (1) or more employee(s) as alternate sample custodian(s) to ensure that at least one (1) such custodian shall be available to receive evidence samples. 2. The Contractor shall maintain an area for storage of evidence samples, which, in addition to requirements imposed by other provisions of these specifications, shall be secured from access by any person other than a designated custodian. 3. From the time of sample submittal to a custodian, evidence samples shall, at all times, remain in the actual, or constructive custody of a designated custodian, or analyst, until released for disposal pursuant to direction of the Water Boards Contract Manager, or designee. a. Actual custody shall mean personal and constant control and surveillance over the sample when it is being transported to or from the secured area and during the actual time that analytical services are being performed on the sample. b. Constructive custody shall mean those times when the sample is stored in the secured area. c. The Contractor shall ensure that all required documentation shall not become separated from the sample until disposition of such documentation is directed by the Water Boards Contract Manager, or designee. d. No evidence sample shall be disposed of until verbal authorization is obtained from the Water Boards Contract Manager, or designee.
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