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E.R.CARPENTER COMPANY,INC. <br /> 5016 MONUMENT AVENUE <br /> P.O.BOX 27205 <br /> RICHMOND,VIRGINIA 23261 CARPENTER <br /> 8041359-0800 <br /> October 31, 1984 TH����`'TRI;t11, <br /> { <br /> Jack J. Williams, M.D. <br /> District Health Officer & <br /> Air Pollution Control Officer <br /> San Joaquin Local Health District <br /> 1601 East Hazelton Ave. <br /> P. 0. Box 2009 <br /> Stockton, CA 95201 <br /> Dear Dr. Williams: <br /> This letter reponds to the four questions in your letter of June 15, 1984. <br /> 1 . The raw materials and their vapor pressures are tabulated and attached. <br /> 2. The storage facilities and their description are tabulated and attached, <br /> 3. The scrap foam is fed by a conventional belt conveyer into the size <br /> reduction hog. This machine cuts the scrap into small, about pebble size, <br /> pieces. These pieces are moved into the storage bins through a closed air <br /> conveying duct. <br /> From the storage bins , the foam pieces are dropped into the weigh hopper and <br /> moved into the dry mixer through a closed air conveying duct. <br /> In both of these cases , the conveying air is separated from the foam in a <br /> cyclone. <br /> The bonded production diagram shows this product flow. <br /> 4. The two cyclones, now designated VB1 and VB2, are emission points as the <br /> air is exhausted to atmosphere. <br /> When the foam is mixed with the prepolymer of TDI and polyol, some <br /> isocyanate fumes are produced and these are exhausted at VB3. <br /> MANUFACTURERS OF COMFORT CUSHIONING PRODUCTS <br />