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MA 1 5 F Would damage the dispersing grid in the carbon scrub. hot 81r h is pushed through the carbon and then enters the "The TheCYCh Purge" condensate tank, condensing the vapor stream into water and gasoline. The vapor stream is then returned to the heater to { reheat the stream to 210QF prior to reentry into the carbon scrub to continue the stripping of volatile organics and water from the carboxy to complete the closed poop system. Rejuvenation continues until no more liquid is produced from the en ste t . Nitrogen is used to purge the system of oxygen to insure againnsst explosion. This technique was successful in approximately 45%-50% of the absorbed hydrocarbons and water mvapor from the carbon scrubs. JUNE 5, 1991 With the limited success of rejuvenating the carbon with the } "Cyclo Purge" it was decided to purchase two more carbon scrubs- 110 gallon units (dependent upon carbon density, approximately 450 pounds of carbon each) . These carbons arrived at the si 5, 1991. The " te on June Cyclo Purge,, was removed from the vapor recovery system and in its place 55 gallon moisture drop outs drums were placed infront of and behind the pumps (2- DR 606 Rotron Blowers) that were placed in parallel. That day the 6 85 gallon carbon- scrubs were sent to Yakima for rejuvenation. The system was restarted at 22:30..Pm,nulling vapors from pl P3, EX, MWI and MW5, but . due to vacuum increases from theformation, the pumps auto heat shut down occurred every` 11 minutes . and lasted for approximately 2Q minute per pulp for 35% operation time. It was determined that the eondesate (water drop out drums) were causing an increase in the vacuum and overheating were then placed the pumps. The pumps in series and the vacuum recovery restarted exhausting into the two 110 series, gallon carbon scrubs that were in JUNE 7, 1991 Onsite analysis (using a "Photovac" IOS50 GC-PTD chromatograph) showed that no vapors were being produced from PI and only vapors from EX. These two wells were taken off of thminor extraction system at that time. vapor ti The vapor extraction system operated until ,Tune 14, 1991 when it was shut , down due to breakthrough of the second--110--gallon---- - - --canister-at-6;00-pm--(219.5-hrs/9.l-days).. During this time frame the "Cyclo Purge" was used on occassions lto rejuvenate the first carbon without shutting down the recovery system. But. on this date the condensating system did not operate appropriately and needed repairs, leak in the cooling. system. 5+s� page 10