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bailing or the use of an electrically-operated pump. Purge water will be monitored for the <br /> parameters of temperature, pH, and electrical conductivity until stabilized. <br /> A well is allowed to recharge to at least 80% of its prepurge volume prior to sampling. If a well <br /> dewaters, it will be allowed to recharge for a minimum of one to two hours prior to sampling. <br /> After the water level within the well has stabilized, a sample is collected within a dedicated, <br /> clean, disposable, plastic bailer lowered into the well and hoisted when filled. <br /> 4.0 SAMPLE PREPARATION & TRANSPORT FOR LABORATORY ANALYSIS <br /> Samples will be transferred to airtight vials, chilled on ice, and transported to a California <br /> DOHS-certified laboratory for analysis. Samples will be analyzed within the EPA-specified <br /> holding time for the requested analysis. <br /> Each sample container submitted for analysis will have a label affixed to identify the job <br /> number, sample date, time of sample collection, and a sample number unique to that sample. <br /> t'sfi%l <br /> 3 A chain-of-custody form will be used to record possession of the sample from time of collection <br /> to its arrival at the laboratory. When the samples are shipped, the responsible technician or <br /> geologist relinquishes custody of the samples by signing the chain-of-custody form, noting the <br /> date and time. The sample-control officer at the laboratory. <br /> • verifies sample integrity; <br /> • confirms storage in the proper container; <br /> • recognizes that an adequate volume of fluid has been collected for the required analysis; <br /> . identifies the method of reservation; and <br /> p <br /> • accepts custody for the laboratory when these conditions have been satisfied. <br /> i>s 1 <br /> `I <br /> t <br />