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A Mr. Greg Johnson <br />Page 3 of 4 <br />c. Contents: The tank will initially be used to temporarily store fuel oil which will be <br />used to initiate the test. The test will be initiated by filling the process system with <br />the fuel oil which will be used for startup heating in the underground retort. The <br />tank will subsequently be used to store naphtha (light crude shale oil) produced in <br />the retort. <br />d. Use of stored fluid: The produced light crude shale oil may be recycled to the <br />retort to facilitate heating; loaded to trucks, totes, or drums for research testing <br />and analysis; or transferred to an onsite incinerator for disposal. Discrete samples <br />of the produced light crude shale oil will be collected for analysis. <br />e. How used: Light crude shale oil produced by the retort will be transferred to and <br />from the tank using pumps and process piping. <br />3. Slop Oil Storage Tank <br />a. Size/Volume: 10 ft (diameter) by 10 ft (high); Specified capacity = 5,880 gallons <br />(140 barrels) with a working capacity of 4,998 gallons (85% of specified <br />capacity) <br />b. Construction: Welded steel in accordance with API Standard 650. The tank is <br />equipped with P/V valve and is nitrogen blanketed. <br />c. Contents: "Off-spec" crude shale oil produced from the underground retort. <br />d. Use of stored fluid: The tank is used an intermediate holding/surge tank for <br />temporary storage of "off-sped" crude shale oil prior to transfer to the onsite <br />incinerator. <br />e. How used: The "off-sped" crude shale oil produced at the underground retort is <br />transferred to and from the tank using pumps and process piping. <br />In addition to the tanks described above, one leased, skid-mounted, double-wall, 3,000 gallon <br />diesel tank will be used onsite to support drilling of the wells needed for the test. A leased, <br />4,500-gallon, four chamber tanker truck will be used onsite to transport diesel to the drill rig. <br />AMSO appreciates your consideration of our request for your opinion regarding this matter. If <br />you have any questions or need additional information, please contact me at rday_gamso.net or <br />(970) 625-4324. <br />Sincerely, <br />Roger L. Day <br />Vice President of Operations <br />Attachment