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3 . 0 AL;Ty AggggANCE PLAN ral Samplec__ co lock i_on and��flli:��x Proce�3t�re� Proper collection and handling are essential to erasure the quality Of a sample. Each sample will be collected in a suitable container, preserved carr-ctly for the intended analyses, and sto--d prior to analysis for no longer than the maximum. allowable holding time. Details on the procedure for collection and han- aling of soil samples to be used on this project can be found in Section 1 , 0 (Methods) . 33 .;._3 ala 1�3ent;f� a zoo a�xd w;�aisA-pf-rgustody Procedures Sample identification and chain-of-custody procedures ensure sa-,nV,_e integrity and document sample possession from the time of collection to its ultimate disposal . Each sample container submitted analysis will have a label affixed to identify the job number, date., and time of sample collection, and a sample number unique to that sample . This information, in addition to a de- scription of the sample, Field measurements made, sampling methodology, names of on-sit-e pers=nel , and any other pertinent field observations will be recorded on the borehole log in the field records. All samples will be analyzed by a State-certified laboratory . A chain-of-custody fort^ will be used to record possession of the samplo from tine of collection to ifs arrival at the laboratory. When the samples are shipped, the person in custody of them will relinquish the samples by signing the chain-of-custody form and not" the time. The sample-control officer at the laboratory will verify sample integrity and confirm that it was collected in the ,roper container, preserved correctly, and that there is and adequate volume for analysis. If these conditions are net, the sample 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 tie legally-required log book maintained by the laboratory in the .laboratory. The sample description, date received, client' s name and any other relevant .information will also be recorded. ��l�tica], duality. As�UY�S�ca In addition to routine calibration of the analytical instruments with standards and blank, the analyst is required to run dupli- cates and spikes on to percent of the analyses to insure an added measure of precision and accuracy. Accuracy is also verified through the following: 1 . U.S. Environmental. Protection Agency (EPA) and State cer- tification programs . Page! 2