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c t� a O. �°'1 Yvl C r 0 A WORKPLAN 1. Prepare site specific health and safety plan per OSHA guidelines. Give to workmen on site for their use during the project. 2. Mark out area to be excavated in white per State law for USA to come out and mark the underground utilities. USA to be notified 3 days in advance of digging. 3. Pump out any product remaining in the UST in drums on site for disposal by gasoline recycling company. 4. Break the concrete over the tank and offhaul to the concrete recycler. 5. Excavate to remove the UST. 6. After tank is "loosened" in the excavation, tilt to one end to further remove all the product from the tank. Triple rinse tank with water and store water in drums for disposal. 7. Inert the UST with 30 pounds of dry ice per 1,000 gallons. Minimum 50 pounds of dry ice ice. The dry ice inerts the tank by forcing any flammable vapors out through the openings in the top of the tank. 8. Prior to removal, check the tank with a Gastech LEL machine for the presence of flammable vapors and oxygen. If the LEL is below 10% and the oxygen below 10%, the tank can be safely removed and placed onto a truck bound for ECI in Richmond. 9. Haul tank to ECI in Richmond, CA under a hazardous waste manifest. 10. ECI in Richmond, CA may steam clean the tank and scrap it. 11. Immediately after the tank removal, collect one soil sample from under the tank and analyze per guidelines for gasoline constituents. 12. Collect a water sample in the event that there is water in the excavation and analyze per constituents petroleum hydrocarbons. 13. Collect composite sample as needed from the stockpiled soil excavated during the tank removal and analyze peer guidelines for waste constituents petroleum hydrocarbons. 14. Import fill material to replace the volume of the tank and compact. In the event that the excavated soil is contaminated, then we will stockpile on site and cover with visqueen and import soil to backfill the hole. If left open, fence off open hole. 15. Offhaul contaminated soil for disposal at a Class 11 landfill. 16. After confirmation soil sample results are obtained, we will seek approval from the Toxics Division to re -concrete the excavated area. In the event that the bottom of the excavation is contaminated, we will provide a proposal to overexcavate the area and backfill with imported soil.