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ISCS.PEC'\9784S.PEC <br /> O=TY OF LODI Page 1 of 13 <br /> ,331 SOUTH HAM LANE <br /> ADI, CALIFORNIA 4/29/88 <br /> AHI., JOB #9784 <br /> 6-150.02 REMOVAI4/ABANDONME Nr OF EXISTING TANKS AND PIPING SYSTEMS <br /> REMOVAL: <br /> 1. Drain all product lines. <br /> - For pressure, submersible turbine pump (STP) system, gravity drain into tank by <br /> opening check valve at STP and the test port in shear valve below dispenser. <br /> Disconnect line at STP union to drairVflush remaining product into an appropriate <br /> container. <br /> CAUTION: DO NOT INIMDUCE COMPRESSED AIR INTO LINES FOR PURPOSE OF EVACUATING <br /> PRODUCT FROM LINES. <br /> 2. Remove all flammable liquid from tank bottoms by using a hand pump to evacuate the <br /> remaining few inches. Dispose of tank bottom liquid remains per applicable <br /> regulations. <br /> 3. Excavate dawn to top of tank and remove fill (drop tube) , STP and all piping <br /> connections to the tank. <br /> 4. Temporarily plug all tank openings, complete excavation and remove the tank; placing <br /> it in a secure location. Block the tank to prevent movement. USE EXTREME CAUTION <br /> DURING REMOVAL OPERATION. <br /> Remove flammable vapors. <br /> Preferred method for conditioning tank. <br /> Make vapors inert by adding 15 pounds of dry ice (carbon dioxide) per 1000 gallons <br /> of tank capacity. <br /> The vapors in the tank may be made inert by adding solid carbon dioxide (dry ice) in <br /> the amount of 15 pounds per 1000 gallons of tank capacity. The dry ice should be <br /> crushed and distributed evenly aver the greatest possible area to secure rapid <br /> evaporation. Avoid skin contact with dry ice because it may produce burns. As the <br /> dry ice vaporizes, flammable vapors will flaw out of the tank and may surround the <br /> area. Hence, observe all normal safety precautions regarding flammable vapors. <br /> Make sure that all of the dry ice has vaporized. Contractor is to analyze vapors in <br /> tank to insure that the atmosphere in the tank is less than or equal to 10% of the <br /> lower explosive limits. <br /> 6. After the tank has been freed of vapors and prior to moving frcm the site, plug or <br /> cap all holes. Use threaded (boiler) plugs to plug any corrosion leak holes. One <br /> tank fitting plug should have a 1/8-inch vent hole to prevent the tank fra, being <br /> subjected to an excessive pressure differential caused by extreme temperature <br /> changes. <br /> 6. 12 <br />