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y GT ENVIRONMENTAL LABORATORY (GTEL) I STANDARD OPERATING PROCEDURE CONCERNING CHAIN OF CUSTODY SOP 11 1. Samples must be maintained under custody until shipped or delivered to the laboratory. The laboratory will then maintain custody. A sample .is under custody if: a) It is in your possession s in C) YOU ilockedoit upeafterebeinr being in your possession d) It is in a designated secure In Your possession area y 2• Custody Of samples may be transferred from one person to th next. Each transferee and recipient must date, sign and e note the time on the chain of custody form. . tj ! 3• In shiPping, the container must be sealed with tape, bearing the sender's signature across the area of bonding at the ) { ends of the tape in order to prevent undetected tampering. � [ Bach sampling jar should be taped and signed as well. Scotch tape works well. 4• write "sealed by" and sign in the Remarks boxat the bottom of the form before sealing up the box. I` >Jastic hag and seal inside the box. Place form in a 5. The. "REMARKS" section in the Upper right part of the. form is for documentingdetails such as a) correlation of sample numbers if samples are split between labs. , 1 b) QC numbers when lab is logging in the samples. c} sample temperature and condition when received by lab. ' . d) Preservation notation. e) P11of samples when opened for analysis if acidified) . f). Sampling observation Or' sam Sin P g Problem E 6. The chain of custody farm should be included shipping inside project.. PP �_ container. A_"copy_.should -be--sent to the _ - - -- pro ect - - � manager. 7• When the samples a,:1 received by the lab, the chain of custody form will be dated,. signed, and s note of the time made by a laboratory representative* The fomlonwith shipping bJils and receipts will be retainedrinatheglabora-- tory files. j