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12/22/93 10:24 $612 559 2202 B.A. LIESCH 41003/003 <br /> 4111 Page 2 <br /> December 22, 1993 <br /> I also spoke with Mr Weinhold regarding the renovation of the dust collection system. <br /> It has been enclosed and some bags have been removed from the bag house system. This <br /> was necessitated by bridging of light materials that were separated from the air <br /> classification process. (A typical example would be sandwich wrap plastic film.) These <br /> materials were bridging between the bags causing a reduction in air flow and head loss <br /> through the system. By eliminating the bags, the bridging has been reduced and the <br /> system is working more effectively then it was previously. Mr. Weinhold had indicated <br /> that there would be some correspondence forwarded to the City documenting their testing <br /> results. <br /> Steve, if you have any questions, please call me. <br /> maw:ENV/39003/memo122293.wp <br /> • <br /> I <br /> B,A, LIESCH ASSOCIATES, INC. 13400 15TH AVENUE NORTH MINNEAPOLIS, MINNESOTA 55441 <br />