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• Field Methods and Procedures Enclosure D <br /> Pagc 5 <br /> F. SAMPLE CUSTODY <br /> This section describes standard operating procedures for sample custody and custody <br /> documentation. Sample custody procedures will be followed through sample collection, transfer, <br /> analysis,and ultimate disposal. The purpose of these procedures is to assure that(1)the integrity of <br /> samples is maintained during their collection, transportation, and storage prior to analysis and (2) <br /> post-analysis sample material is properly disposed of. Sample custody is divided into field procedures <br /> and laboratory procedures, as described below. <br /> F.1 Field Custody Procedures <br /> Sample quantities,types, and locations will be determined before the actual fieldwork commences. <br /> • As few personnel as possible will handle samples. The field sampler is personally responsible for the <br /> care and custody of the collected samples until they are properly transferred. <br /> F.1.1 Field Documentation <br /> Each sample will be labeled and sealed properly immediately after collection. Sample identification <br /> • documents will be carefully prepared so that identification and chain-of-custody records can be <br /> maintained and sample disposition can be controlled. Forms will be filled out with waterproof ink. The <br /> following sample identification documents will be utilized: <br /> • Sample labels <br /> • Field notebook <br /> • Chain-of-custody forms <br /> • <br /> F 1 2 Sample Labels <br /> Sample labels provide identification of samples. Preprinted sample labels will be provided. <br /> Where necessary,the label will be protected from water and solvents with clear label-protection <br /> tape. Each label <br /> • <br /> will contain the following information: <br /> • Name of collector <br /> • Date and time of collection <br /> • Place of collection <br /> • RDM project number <br /> • • Sample number <br /> • Preservative (if any) <br /> F 1 3 Sample Labels Field Data Sheet <br /> Information pertinent to a field survey, measurements, and/or sampling must be recorded on field <br /> data sheets. Entries on data sheets should include the following: <br /> • Name and title of author, date and time of entry, and <br /> physical/environmental conditions during field activity. <br /> • Location of sampling or measurement activity. <br /> • Name(s)and title(s)of field crew. <br /> • • Type of sampled media (e.g., soil, groundwater, air, etc.). <br /> • Sample collection or measurement method(s). <br /> • Number and volume of sample(s) collected. <br /> • <br />