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REPRODUCED AT GOVERNMENT EXPENSE, 0 of other end of pipe several feet back from tank. Remove exposed pipes. Perform capping or plugging by a method conforming to the nationally recognized code covering the specific utility. (See Section 02203, paragraphs 3.1, 3.1-1, 3.1.3 and 3.1.4) 2.1.1.3 Removal of Tank: 2.1.1.3.1 Purge tank of all combustible vapors prior to removal using twenty (20) pounds of dry ice per each 1000 gallons of tank. Incorporate a grounding strap while purging. Repeat process as required to purge flammable vapors to levels that would preclude an explosion. No cutting torch or other flame or spark producing equipment shall be used until the tank has been completely purged or otherwise rendered safe. Degassing will be performed prior to the start of excavation. Vapor freeing of tanks shall be performed in accordance with NFPA Regulation No. 327. 2.1.1.3.2 Excavate to the top of the tank. (See Section 02203.) Disconnect associated piping several feet back from the tank so that bulkhead fittings can be inspected after tank removal. 2.1.1.3.3 Excavate and remove the tank, the concrete tank foundation, and the tank straps. (See Section 01560, paragraph 2.4.3 and Sectiion 02203). Tanks should be removed carefully to prevent damage during removal. The exterior of the tank and pipes should be cleaned. Do not remove tank and piping from the site until Government Consultant Studies in following paragraph are completed and the Contracting Officer gives approval. 2.1.1.4 Government Consultant Studies (ERM -West): 2.1.1.4.1 Tank, Piping, and Excavation Inspection: The condition of the tank, fittings, and pipeline will be observed during excavation and removal by a Government Consultant (ERM -West). In addition, the Government Consultant will inspect the excavation surfaces for evidence of leakage. The results of the tank and excavation inspection will be documented in writing, with photographs where appropriate, by the Government Consultant. The visual observations will be confirmed by soil and water analysis. The applicable regulatory agency will make the final decision on the extent of contaminated soil removal in all cases involving potential product leaks from a tank or pipeline. The Government Consultant will assist in preparing clean-up proposals, and will oversee and coordinate mitigation measures. 2.1.1.4.2 Soil Sampling: If the soil being excavated has a marked discoloration, a sample of the material will be taken by the Government Consultant for analysis. After a tank is removed, soil samples will be taken from within the excavation for analysis. When appropriate, water samples will also be collected. Generally, at a minimum, one soil sample will be taken under each end of the tank and one will be taken for every 20 linear feet of trench for piping. Samples will be analyzed for appropriate tank constituents as required by local regulations. M M MIF411614CF2