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51 N <br /> 1� <br /> GT EIVIRON-MNTAL LABORATORY (GTEL) <br /> STANDARD OPERATING PROCEDURE <br /> CONCEPYING CHAIN OF CUSTODY <br /> SOP 11 - <br /> les must be maintained under custody until shipped or <br /> I. Samp The laboratory Mill then <br /> delivered to the laberatorY• <br /> maintain custody. A sample is under custody <br /> a) It is in your possession in your possession <br /> b) It is in your vie after being <br /> gingn your possession <br /> C) You locked it ug <br /> after d) It is in a designated secure area <br /> may <br /> be transferred from one person to the <br /> 2. Custody of samples <br /> next. Eachtransferee <br /> and ofccustody form.ate, sign an <br /> note the time bearing <br /> 3• In shipping, the container must be sealed with tapas the <br /> ". the sender's signature across he area <br /> undetectedntampering• <br /> enis of the tape in order to prevent ed and signed ed well. <br /> Each sampling jar should be tap <br /> Scotch tape works well. . <br /> at <br /> 4. <br /> Write "sealed by" and sign in the "Remarks"hebo boxPlace hform in <br /> bottom of. the for and sealbefore <br /> insidegthe box. <br /> a plastic bag <br /> right part of the form is <br /> 5 The R'REMARKSu section. in the upper ; <br /> for documenting details such as: <br /> if samples are split <br /> a) Correlation of sample numbers <br /> betwaen labs. i <br /> b) QC numbers when lab is logging in the samples• <br /> c) Sample temperature and condition when received by <br /> lab. <br /> d) preservation notationened for Analysis (if <br /> - e) pH of samples when op <br /> acidified) . lin problem <br /> f) Sampling observation or sampling <br /> form should be i*:cluded inside the <br /> 6• The chain-of-custody copy should be sent to the project <br /> shipping container. A PY <br /> manager. the chain-of- <br /> re lab, <br /> ,. 7• When the samples are receivesigned, and a note of ng with <br /> custody form will be dated, The form along <br /> ese <br /> made by a laboratory reprwill retained in the labora- <br /> ve• <br /> shipping bills and receipts will be - <br /> I tory files. <br /> -� TECH\ui 111 1\i <br /> .sem IACS7�Im1, <br />