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Corporate <br /> �� Lakewood,CO <br /> rters <br /> 27 <br /> , :, , :, ,,:Pmvon <br /> ft/Environmental,Inc. <br /> Standard Operating Procedure <br /> Title: Chain of Custody Form <br /> Number: SCREM27 <br /> Revision: I <br /> Author: Darin Worden <br /> Reviewer: Jeremy Musson <br /> Acceptance Date: December 23, 2022 <br /> File Location: Z:\PEER\SOPS\Project Delivery SOPS\FINAL SOPS\SOP-SCREM\Word <br /> Doc uments\SOP-SCREM27 Chain of Custody Forms.docx <br /> 1 .0 Purpose <br /> Chain of custody procedures are used to document sample possession from the time of collection to the time <br /> of receipt by the laboratory, and to provide pertinent information for the laboratory (i.e., required <br /> analyses). Proper labeling and documentation of samples for laboratory analysis is required under RCRA- <br /> defined protocols. Chain-of-custody seals and forms provide a guarantee that samples collected in the field are <br /> not subject to tampering or improper storage conditions. The chain of custody is a record of all personnel <br /> who retained custody of the samples at any point from the time they were collected until they reach the <br /> laboratory. <br /> A copy of a sample chain-of-custody form, sample label and custody seal are attached in Appendix D of the <br /> Vista Del Rio Soil Sampling and Analysis Plan. The chain of custody form is filled out and submitted with the <br /> samples whether they are shipped or dropped off in person. Each sample must have a label with its unique <br /> sample ID. Custody seals are used on individual samples or on a cooler containing samples to show evidence <br /> of sample tampering. Labels, chain-of-custody records and custody seals can be provided by the <br /> laboratory. Each laboratory will have their own unique form, or it is acceptable to use the standardized Pinyon <br /> form. <br /> 2.0 Procedure <br /> At a minimum, the information below should be recorded on the form (the following explanation is keyed to <br /> the attached sample form): <br /> • Client (Pinyon) <br /> • Address (3222 S Vance St., Suite 200, Lakewood CO 80227) <br /> • Telephone number (303-980-5200). <br /> • Project manager and email contact information. <br /> Chain of Custody Form <br /> December 23,2022 <br /> Page I of 3 <br />