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,14� SAMPLE HANDLING Samples are handled during collection and shipment in such a way as to ensure maximum sample quality and integrity. All samples will be collected by experienced Brown and Caldwell field personnel. The samples will be collected in containers that are appropriate to the sample material and the required analyses. All sample containers are precleaned by the analytical laboratory or the container manufacturer or are decontaminated in the field by washing with laboratory-grade detergent, rinsing with tap water, and then rinsing with deionized water. All sampling equipment will be decontaminated prior to and between use. Each sample container will have a label affixed in the field that identifies the date and time of sample collection, name of sampler,job number, and a unique sample number. This information will be recorded on the boring log or in the field records. Samples are stored and shipped to the laboratory in a cooled chest. Only analytical laboratories certified by the state in which the samples were collected will be used. A chain-of-custody form will be used to record possession of samples from the time of collection to the time of arrival and Iog in at the laboratory. The sample-control officer at the laboratory will verify sample integrity and confirm that they were collected in the proper containers, preserved correctly, and that there is an adequate volume for analysis. If these conditions are met, the samples will be assigned a unique log number for identification throughout analysis and reporting. The log number will be recorded on the chain-of-custody form and in the log book maintained at the analytical laboratory. The sample description, date received, client's name, and other relevant information will also be recorded. QUALITY ASSURANCE PLAN Proper collection and handling are essential to ensure the quality of samples. Proper documentation of sample collection and handling procedures is essential to verify the integrity of the data. All samples will be collected by experienced Brown and Caldwell field personnel, and placed in containers appropriate to the required analysis. Brass tubes used to collect soil samples will be cleaned by washing in laboratory-grade detergent, rinsing with tap water, and rinsing again with deionized water. All glass containers will have been precleaned by the manufacturer or at the analytical Iaboratory according to guidelines established by the U.S.Environmental Protection Agency. Following collection and inspection of soil samples, the ends of the brass tubes will be covered with aluminum foil and plastic caps and sealed with plastic tape. Groundwater samples will be collected in sampling bottles that have caps with TeflonTm septa. After filling, the bottles will be visually inspected to ensure that no air bubbles remain within. All samples will be labeled and then placed in zip-lock plastic bags. Samples will be stored and transported in a closed ice chest and protected from meltwater. Samples will be stored for analysis no longer than the maximum allowable holding time. 2417aEPORTSIW ULA.E}OC