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was below detection levels at 800F. Vacuum influence was <br /> recoreded that day, using a monometer calibrated in millimeters <br /> (mm) of water, see Figure 6H. <br /> MAY 11, 1991 <br /> f �~7- tris stem was shut down due to br®akthrou h cccusrig on <br /> hey , dar a`("at `this't .me o the 6 carbons"b i g"'us ``atp ttie <br /> �f bpi ' <br /> gate, five had reported breakthrough which include the carbons <br /> presently in the #1 and #2 positions of the vacuum system) . <br /> Carbon #3, which was on the exhuast of carbon #2, did not show <br /> breakthrough. The system was not restarted until the carbon could <br /> be re juvinate T �Cyao�P�t�Fwa � iieto �retavatth Sive <br /> �" a 7, srz kare .xa.-< C <br /> ��a an a a bion aarub an � %ew 3' carbon tw a� p o®f at, 7the,, #1 <br /> position. <br /> MAY 14, 1991 <br /> may -r n�461�s <br /> v� x22 <br /> Rr�un� i` "14gat <br /> 3rftt -,' �`nw avh�i r ��''F. .4...'_ S't <br /> 1 pm, at which time bred k�ar°fir oug ':.'oiccurred on the fifth carbon <br /> canister. During this time frame initially two carbon scrubs were <br /> placed on the exhaust of the moisture dropout, and once <br /> breakthrough occurred to the #1 carbon a 3r,' scrub was added and <br /> so on until all six carbon scrubs were activated onto the vapor <br /> recovery system in series. The system, up and including this <br /> time, had operated for a total of 238.5 hours or 9.9 days removing <br /> approximately 1928 pounds of total petroleum hydrocarbons with an <br /> accumulative removal, including the pilot test of 3088 pounds. <br /> From initial start up on April 26 thru May 23, 2991, the "Cyclo <br /> Purge" was used infront of the carbon as a condensate drop out <br /> measure, to remove as much of the formation water produced in the <br /> vapor stream and any hydrocarbons along with the water vapor. A <br /> limited evaluation of the "Cyclo Purge" was made, and indicated <br /> that limited gasoline range hydrocarbons were removed from the <br /> vapor stream along with the majority of water vapor prior to <br /> exhausting to the activated carbon scrubs, thus enhancing the life <br /> + of the carbon somewhat, see Appendix D. On May 22, vacuum <br /> influence measurements were obtained, sea Figure 6C. <br /> MAY 31, 1991 <br /> With the vapor extraction system still off, the "Cyclo Pruge" was <br /> used to rejuvenate the carbon scrubs, instead of shipping them to <br /> Cameron-Yakima for rejuvenation. <br /> "o-0-01000,00%, <br /> exha"Vvof -,a <br /> , p °f$ o f.�Ii�ati�tha�`ca�b�inw to�21<a�F, =any,xf'ho�t�r <br /> s <br /> page 9 <br />