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Phase II Sampling and Analysis Plan SOP-2—Drilling and Sampling Port of Stockton-Rail and Bridge,Stockton,CA FN 6.2.3.4 Soil Sample Collection for Laboratory Analysis Selected soil samples will be collected for laboratory analysis at the depths specified in the work plan or field observations. At these selected locations, samples for volatile organic compound (VOC) analysis will be collected using a Terracore sampler, or an acceptable equivalent. Samples collected for VOC analysis should be collected from the soil cores in a manner that minimizes disturbance of the sample. The following items should be considered when collecting soil samples: • A clean pair of new, non-powdered, disposable gloves will be worn each time a sample is collected. • Personnel must use new Terracore samplers for each sample interval. • Document field sampling, including field conditions, problems encountered during sampling and sample appearance, in the field form. Samples collected will also be noted on the drilling log sheet at the corresponding depth. • Place unused sample material into the approved transport/disposal containers along with other drill cuttings generated during drilling activities. • When soil sampling is completed or when time permits, transfer samples to the site office for final packaging. Complete COC documentation and shipping procedures in accordance with relevant SOPS. The completed COC will remain with the samples until custody is relinquished. • Note problems encountered during sampling in the Daily Quality Control Report Form. 6.2.3.4.1 Terracore Sampler Procedures The procedure for collection of VOC samples using a Terracore Sampler are as follows: • Label appropriate laboratory containers. • Quickly push the sampler(Terracore or equivalent) into a freshly exposed surface of soil to collect 5 grams (+ 0.5g) of sample. Also collect a bulk aliquot container for moisture content analysis in the laboratory supplied 4-ounce container. • Carefully wipe the exterior of the sampler head with a clean disposable paper towel. • Empty sampler into appropriate laboratory container. The cored samples must be extruded from the selected coring tool to a volatile organic analysis (VOA)vial in accordance with collection and preservation methods described in EPA method 5035A. The extruded core is transferred into a laboratory pre-weighed (tared)VOA vial. The VOA threads should be wiped with a new paper towel to remove soil and the VOA capped with septum cap. Preserve VOA vials must be analyzed within 14 days of collection. • Place the sample into a plastic ZiplocTm bag and place into a cooler with ice. • Complete COC documentation and shipping procedures in accordance with relevant SOPS. 2-9