SITE INFORMATION AND CORRESPONDENCE

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KLEINFELDER File No. 20-3978-O1.W10 July 26, 1997 operating temperatures. The `used" lime was regenerated for reuse by activated carbon. Eventually the After the precipitation of impurities using li the raw sugar juice was passed through a series of filters to further purify it. $ul'fiif diozid used to inhibit discoloration of the sugar. After filtering, the raw sugar juice was sent to the evaporators to thicken it. The thickened juice was then sent through a series of centrifuges to crystallize out the sugar. The syrup left after crystallization is molasses. The sugar was then dried in granulators and stored in the sugar warehouse or silos, or ground into powdered sugar. According to Mr. Tucker, the sugar produced at the Manteca plant was shipped off site in bulk. The various heating and evaporating processes utilized steam produced by the boilers. The '01 q boilers on li oil and/or natural gas& The heated ter was cooled in �� cooling towers. According to Mr. Tucker, the cooling towers onsite uspd bQgn1rnI—;I !en*e�sa-$FF a cral`iii��• � ��i `^�^'�'^i'1 �g p� %) Process water generated during the manufacturing process was discharged to the wastewater ponds. The waste stream includedwn, acidic and caustic wastes, and scrubber: AaRft►After seduxwWfI%WTfflp3&out of the wastewater, the water was reclaimed for use on the= ,ovev"pRTFown on site. The manufacturing plant equipm t required kbrication in the form of industrial ii Hydraulic � was also likely used 'n the lant equipment. The processing equipment was cleaned usm +� or "�u�ic sol s. were used in the machine shop for parts cleaning. ('�il#were also co ly used in the machine shops. Maintenance activities at the Spreckels M eco plant also included the repair of motor vehicles such as cars and farm machinery, and the aintenance of a locomotive operated on site by Spreckels. The was t conducted at a specific location but The Spreckels Manteca property also contains a ge amount of cropland, mostly almond orchards and grain crops. The cropland served two p oses: providing a buffer zone between the factory and the adjacent community, and provi 'ng a means of disposing of clarified wastewater from the plant via irrigation. The which would accumulate ft the �`awas^ vedcl spread on the feedlot. Beet chips, organic material and dirt removed from the beets was also spread on the feedlot where cattle consumed the edible portion. 20-3978-01.WI0/2017L155 Page 7 of 50 Copyright 1997,Kleinfelder,Inc.