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.y <br /> analysis. Samples not selected for immediate analysis may be transported in a cooler with.ice and <br /> archived in a frostless refrigerator at approximately 4°C for possible future testing. <br /> CHAIN OF CUSTODY PROTOCOL <br /> Chain of custody protocol is followed for all soil.:and groundwater samples selected for laboratory <br /> analysis. The chain of custody form(s) `accompanies the samples from the sampling locality to the <br /> laboratory, providing a continuous record�of possession prior to analysis. <br /> DECONTAM NATION <br /> Drilling and Soil Sampling <br /> Drilling equipment is decontaminated by Stearn cleaning before being brought onsite. The augers are <br /> also steam cleaned before each new boring is commenced. Prior to use, the sampler and sampling <br /> tubes are brush-scrubbed in a Liqui-nox and potable water solution and rinsed twice in clean potable <br /> water. Sampling equipment and tubes are also decontaminated before each sample is collected to <br /> avoid cross-contamination between borings. <br /> LAw/ <br /> L <br /> 1 <br /> L <br /> s <br />