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/i Laboratory Analysis Each soil sample will be analyzed for Total Petroleum Hydrocarbons by EPA Method 8015M (using Extraction Method hydrocarbon scan to identify high molecular weight bunker fuel hydrocarbon fractions). All samples will be analyzed .by a State-Certified laboratory. The laboratory will analyze matrix and spike QC samples_ as part of the internal quality assurance/quality control (QA/QC) program. All laboratory QC data will be included in the final report for this program. . 3.3 Field Quality Assurance/Quality Control Procedures - Field QA/QC procedures include recording all samples in both the'sampler's log book and the field geologist's boring logs; recording all samples on a chain of custody form that will accompany the samples, to the laboratory; and several actions that will minimize cross- contamination: • Soil augers will be steam cleaned prior to the start of each new boring; ,; • The split-spoon sampler will be washed in a solution of TSP and clean tap water, rinsed ..in clean tap water, and final rinsed in distilled water between each sample. • Clean stainless steel sleeves will be used for each sample. In addition to a field notebook, which will be.used to record the daily log of site activities, the following forms will be used to record the'data generated in the field. • Inspector's Daily Record of Work Progress: This form will be used to record the names of project personnel-on site, equipment on site, materials delivered to the site, items of work installed and a daily construction summary; • Chain of Custody Record: This form will also accompany each shipment of samples to the laboratory to insure accountability for the samplesfrom the time of collection to the time they are analyzed; • Boring Description Log:- The field geologist will use this form to record soil types and other relevant data for each boring; jTETRA TECH:Stockton Developmental Center,Revised Site Investigation Work Plan Page 9