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i <br /> • Section 84.4.1 (Backfill) of the GMP. It will be final graded to match the original <br /> grade of the site. Resurfacing may not be necessary. <br /> A4.5 Task 5 - Sampling and Analysis of Liquids and Soil <br /> Liquids such as tank contents and rinsate, and contaminated soil from the stockpile <br /> will be analyzed for disposal purposes. Soil from bottom of the excavation will be <br /> sampled to determine if all contaminated soil has been removed. Soil sampling <br /> locations will be determined by the COR during the field operations. Analytes will <br /> include lead using EPA Method 7421, total petroleum hydrocarbons (TPH)- <br /> purgeable (gasoline) and TPH-extractable (diesel) using CA DHS LUFT Methods, <br /> and aromatic hydrocarbons using EPA Method 8020. <br /> A4.6 Task 6 - Preparation of Tank Closure Report <br /> A Tank Closure Report will be prepared after completion of work following the <br /> outline in the IDC. The report will include the following: <br /> • A cover letter certifying that all services have been performed in accordance <br /> with the terms and specifications of the contract. <br /> . A narrative report describing the condition and contents of the tank and <br /> piping, and 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 /> • One line drawings of the site and progress photographs. <br /> • Tank closure certificate. <br /> • <br /> A-5 <br />