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OEOMATRIX <br /> information collected during water quality sampling. Samples may also be recorded on a <br /> SAMPLE CONTROL LOG SHEET or in the DAILY FIELD RECORD as a means of <br /> identifying and tracking the samples_ Following review by the project manager,the original <br /> records will be kept in the project file. <br /> 4.2 CHAIN-OF-CUSTODY PROCEDURES <br /> After samples have been collected and labeled,they will be maintained under chain-of-custody <br /> procedures. These procedures document the transfer of custody of samples from the field to the <br /> laboratory. Each sample sent to the laboratory for analysis will be recorded on a CHAIN-OF- <br /> CUSTODY RECORD,which will include instructions to the laboratory for analytical services. <br /> Information contained on the triplicate CHAIN-OF-CUSTODY RECORD will include: <br /> • Project number <br /> • Signature of sampler(s) <br /> • Date and time sampled <br /> • Sample I.D. <br /> • Number of sample containers <br /> • Sample matrix(water) <br /> • Analyses required <br /> • Remarks,including preservatives, special conditions, or specific quality control <br /> measures <br /> • Turnaround time and person to receive laboratory report <br /> • Method of shipment to the laboratory <br /> • Release signature of sampler(s), and signatures of all people assuming custody. <br /> • Condition of samples when received by laboratory <br /> Blank spaces on the CHAIN-OF-CUSTODY RECORD will be crossed out between the last <br /> sample listed and the signatures at the bottom of the sheet. <br /> fADoc_SafeTROT000UPROTO-MW.doc SAMPLING OF GROUNDWATER MONITORING WELLS AND WATER SUPPLY WELL <br /> Revision Date: March 1996 Page 7 of 9 <br />