Laserfiche WebLink
Section No 7 <br /> Revision No 0 <br /> Date September 5, 1991 <br /> Page 1 of 2 <br /> 7 0 CHAIN OF CUSTODY <br /> 7 1 Field Procedures <br /> Y <br /> A critical aspect of sound sampling and analysis protocols is the <br /> maintenance of strict chain-of-custody procedures Field chain-of-custody <br /> procedures include inventorying and record keeping during sample collection <br /> and shipment through laboratory receipt The field sampler is personally <br /> responsible for the care and custody of the samples collected until they are <br /> properly transferred In general, a sample is under chain-of-custody control <br /> if <br /> ■ it is in the sampler's actual possession, <br /> e it is in the sampler's view after being in his/her physical <br /> possession, <br /> �--m- -it=is=secure d=by=the=samp ler,so-no;one=can;.t amp er�with_the_samp le, <br /> ■ <br /> it is secured in an area which is restricted to authorized <br /> personnel <br /> Sample identification documents must be carefully prepared so that <br /> identification and chain-o£-custody can be maintained, and sample disposition <br /> can be controlled Sample identification documents include <br /> r Chain-of-Custody records, <br /> ■ Custody seals, and <br /> ■ Field notebooks <br /> The sampler must fill out adhesive sample labels and secure them to the <br /> sample container Forms and labels are filled out with waterproof ink <br /> Where necessary, the label is protected from water and solvents with clean • <br /> label protection tape <br /> 7-1 <br />