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Port of Stockton -2- 17 March 1988 <br /> 3. Detail modifications made to pipelines in order to <br /> conduct pressure testing. <br /> i <br /> B. Provide inventory reconciliation records of the last <br /> six months with a description of procedures used to <br /> check inventory. <br /> 1. Report the precision of the procedures used to <br /> check inventory. <br /> 2. Explain any losses indicated by the records. <br /> C. Describe subsurface investigation to date. <br /> 1. Document location of borings and test pits on a <br /> site plan. <br /> 2. Document measurements of ground water elevation <br /> and product thickness measured to date. <br /> 3. Provide construction details of wells, and <br /> monitoring points installed to date. <br /> 4. Provide results of chemical analysis on product <br /> and ground water completed to date. <br /> D. Provide a detailed site plan, to scale, including the <br /> following: <br /> 1. All above and underground tanks, and associated <br /> piping. Include tank capacities and contents on <br /> the plan. <br /> 2. Property boundaries. <br /> 3. Tank bottom drain locations and associated drain <br /> lines. Explain where drained material is disposed <br /> of. <br /> 4. Tank and building roof drains and associated <br /> lines. <br /> 5. Underground utilities. <br /> 6. Abandoned pipelines. <br /> 7. Leach lines and septic tanks associated with <br /> wastewater disposal systems. <br /> E. Evaluation of existing data. <br /> 1. Evaluate potential sources. <br /> 2. Describe the extent of free product in the <br /> subsurface, and its potential for migration. <br /> II. Workplan for further site assessment with time schedule for <br /> task completion, and interim remedial action. The workplan <br /> must be of sufficient scope to determine the entire vertical <br /> and lateral extent of ground water and soil contamination <br /> resulting from the recent product release. <br /> A. Propose methods for source identification. <br />