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,%W b. A suitable pump shall be used to remove any liquid and any pumpable sludge from the tank. c. Field personnel, equipped to ensure their safety, shall then enter the tanks and scrap the inner walls clean if necessary. Any solids or scrapings that accummulate in the bottom of the tanks shall be manually removed. The tanks atmosphere must be tested for oxygen and flammable gases before personnel are allowed entrance. d. The tanks should be rinsed with water and the rinsate handled as hazardous waste. e. The tanks are to have holes put in them to prevent possible reuse, or shall be cut into sections. 4.0 INCLEMENT WEATHER Steps must be taken to prevent rain from entering the tank excavation as long as it is open. Methods to be used include, but are not limited to, tarps and dikes. If rain cannot be kept from entering the excavation during the tank removal process, work must discontinue until the weather clears. The excavation will remain open for the installation of a new tank. 5.0 CONTAMINATED SOIL If any contaminated soil is encountered, it is to be removed. Determin- ation of what soil is contaminated is to be made by the Project Manager using visual and olfactory senses, and organic vapor analyzers. Contam- inated soil, if allowed by the Air Quality Management District, will be spread on-site to allow the gasoline to vaporize. If spreading is not allowed, a composite sample of the soil will be taken. If the sample result is less than 100 ppm of gasoline in the soil, the soil is to be taken to a local sanitary landfill. If the sample result is greater than 100 ppm of gasoline in soil, the soil will be handled as hazardous waste. Soil samples will be taken of the excavation floor and sidewalls and analyzed for total petroleum hydrocarbons to verify field measurements and to ensure all contaminated soil is removed. -3-