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PRIMEX TECHNOLOGIES • • <br /> Corrective Measures Study Workplan, EPA ID No. CAD 000 626 762 <br /> May 2000 <br /> hydrocarbons and heavier range hydrocarbons, TPHd and 0&G will be run on soil <br /> samples collected during the implementation of the CMS WP. Since the RFI sample <br /> results did not indicate the presence of any light-range hydrocarbons analysis for TPH <br /> as gasoline will not be implimented. Samples will be analyzed for TPHd and 0&G by <br /> the following methods: <br /> Analysis Method <br /> Total Petroleum Hydrocarbons — diesel EPA Method 8015 Modified <br /> Oil & Grease EPA Method 1664 <br /> During the step-out sampling at SWMU #21, the upper two samples (at 2'/2 and 5 feet <br /> bgs) at each location will be analyzed for TPHd and O&G, the deeper samples will be <br /> placed on hold at the laboratory pending receipt of analytical results for the shallow <br /> samples. If the 5-foot sample result exceeds 100 mg/kg for TPHd or O&G, the 7'/2 and <br /> 10-foot samples will be analyzed. If the 10-foot sample result exceeds 100 mg/kg for <br /> TPHd or O&G, the remaining 12% and 15-foot samples will be analyzed. <br /> Monitoring of soil samples using a photoionization detector is not proposed for this <br /> CMS WP since volatile organic compounds are not of concern and the anticipated <br /> petroleum hydrocarbons are in the heavy range. <br /> 6.4 Sample Documentation and Quality Assurance/Quality Control <br /> Sample documentation and quality assurance/quality control (QA/QC) sample <br /> procedures have been established in the RFI WP (August 1999) and will continue <br /> during the implementation of the CMS WP field work. These procedures and any <br /> deviation from the RFI WP procedures are summarized below. <br /> 6.4.1 Sample Documentation <br /> Sample logs will be completed for each sampling location. The sample logs will <br /> include, at a minimum, the following. <br /> 1. sampling location, <br /> 2. identification of the sampler, <br /> 3. sample media, <br /> 4. type of sample and container, <br /> 5. sample identification, <br /> 6. field observations and <br /> 7. classification of soil type <br /> Sample identification will follow the protocol used during the RFI WP: [Site name] — <br /> [sample location][sample depth]. Sample labels will include the following. <br /> CHOW ENGINEERING, INC. 8 <br />