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GG-Grab groundwater samples from soil borings <br /> SB-subsurface soil sample from soil borings <br /> TB-trip blank <br /> Sample location qualifiers will begin with the next sample numeric character following those <br /> used in the Problem Assessment report (PAR) and Final Remediation Plan (FRP) (CH2M <br /> HILL, 1995). For locations where refusal is met during drilling,those locations will be labeled <br /> with the two-character alpha code,followed by the sequential numeric character followed by a <br /> one-letter sequential alpha character (e.g. SB-10A). Only those borings completed to the <br /> i. planned depth will be without the final sequential alpha character(e.g. SB-10). <br /> 4.4.2 Sample Labels <br /> Sample labels are necessary to prevent misidentification of samples. The labels will contain <br /> the following information: <br /> • Sample identification number <br /> • Date and time of collection <br /> • Sample type <br /> • Analyses to be performed <br /> 5 • Sampling personnel <br /> Labels will be affixed to all sample containers at the time of sampling. <br /> 4.5 Documentation and Chain-of-Custody <br /> A required part of any sampling and analytical program is the integrity of the sample from <br /> collection to data reporting. This includes the ability to trace the possession and handling of <br /> samples from the time of collection, through analysis,and final disposition. This <br /> r documentation of the sample's history is referred to as "chain of custody." The components of <br /> 1� the chain of custody(custody seals,a field log book,chain-of-custody record) and the <br /> procedures for their use are described in the following paragraphs. <br /> A sample is considered to be under a person's custody if it is: <br /> • In a person's physical possession <br /> 0 In view of the person after the person has taken possession, or <br /> • Secured by that person so that no one can tamper with the sample <br /> A person who has samples under custody must comply with the procedures described in the <br /> following sections. <br /> 4.5.1 Chain-of-Custody Record <br /> To establish the documentation necessary to trace sample possession from the time of <br /> collection,a chain-of-custody record will be filled out and accompany every sample (soil and <br /> water). <br /> The record will contain the following minimum information: <br /> i <br /> t SFO/CABERNET/GROUPS/EBG/DELMCNTE/PLANi_33MORKPLAN-CPT.DOC <br /> i <br />