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regulations. Operating permits for Erickson and Gibson are included in the GMP at the <br /> end of Section D, Safety and Health Program, under Disposal Facilities. <br /> After the tank removal, if the soil is determined by the COR to be contaminated, an <br /> additional 2 feet of soil will be excavated below the invert of the tank. Three soil samples <br /> will be analyzed to determine if all contaminated soil has been removed. If contamination <br /> is still present, the COR will provide direction concerning further sampling and site <br /> remediation. Resurfacing may not be necessary. <br /> Tank excavation will be backfilled with uncontaminated soil, pea gravel, and/or imported <br /> clean fill, and compacted to the percent maximum density specified in theSection B4.4.1 <br /> (Backfill) of the GMP. It will be final graded to match the original grade of the site. <br /> C3.5 Task 5 - Sampling and Analysis of Liquids and Soil <br /> Liquids such as tank contents and rinsate, and contaminated soil from the stockpile will be <br /> analyzed for disposal purposes. Soil from bottom of the excavation will be sampled to <br /> determine if all contaminated soil has been removed. Soil sampling locations will be <br /> determined by the COR during the field operations. Analytes will include lead using EPA <br /> Method 7421, total petroleum hydrocarbons (TPH)-purgeable and TPH-extractable using <br /> CA DHS LUFT Method, and aromatic hydrocarbons using EPA Methods 8020. <br /> • C3.6 Task 6 - Preparation of Tank Closure Report <br /> A Tank Closure Report will be prepared after completion of work following the outline in <br /> the IDC. The report will include the following: <br /> • A cover letter certifying that all services have been performed in accordance with <br /> the terms and specifications of the contract. <br /> • A narrative report describing the condition and contents of the tank and piping, and <br /> signs of leaks. <br /> • Quantities of tank contents, piping, and soil removed. <br /> • A summary of laboratory analysis results of fuel, soil, and rinsate, along with <br /> sampling locations. <br /> • Materials and methods used to backfill excavations. <br /> • Copies of all analyses performed for disposal and manifests. <br /> . Copies of applicable permits. <br /> • Copies of all disposal certifications. <br /> C-6 <br />