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L <br />n <br />fl <br />u <br />u <br />u <br />L <br />C� <br />u <br />n <br />L <br />i Ak <br />WIF 1W k" KLEINFELDER <br />-911_1 • $Ina01 <br />Kleinfelder has conducted a Phase I Environmental Site Assessment (ESA) of the property <br />known as the Former Spreckels Sugar Plant in Manteca, California (Kleinfelder Job No. 20- <br />3978-OLP01, dated October 18, 1996). The process description in Section 3.1, was derived <br />during that assessment. Plate I shows the location of the Spreckels property. <br />3.1 PROCESS DESCRIPTION OF FORMER OPERATIONS <br />The site is the location of a former beet sugar processing plant. Messrs. Jerry Tucker, Frank <br />Nelson and Joe Riggs of Spreckels Development Company provided the description of the <br />manufacturing process. That process description has been supplemented by information posted <br />to the Internet by Monitor Sugar Company. <br />Sugar beets were transported 1'ronn the farm to the processing plant via trucks and railcar. The <br />loaded trucks and railcars were weighed at the scales, and the beets were unloaded at the <br />unloading station. The Spreckels Manteca plant most recently used a series of conveyors, but <br />formerly utilized an underground beet flume, which utilized water to transport the beets from the <br />unloading area to the factory. After unloading the beets were washed. The wash water contained <br />soil and other substances (possibly agricultural chemicals) and was transported to the mud ponds <br />for disposal. <br />After washing, the beets were sliced and placed into the diffusion towers. Tine diffusion towers <br />used hot water to remove the sugar from the beets. The beet pulp was then separated from the <br />raw sugar water. At the Spreckels Manteca plant, the beet pulp was dried and stored in the pulp <br />warehouse pending use as cattle feed. Several different feedlots have been present on the <br />Spreckels property for this purpose since the plant was constructed. Prior to the installation of <br />pulp dryers, the wet pulp was pumped into a large holding pond, formerly located to the east of <br />the existing pulp warehouse, and allowed to dry prior to use as cattle feed. The pulp dryers were <br />installed to reduce odors emanating from the plant. <br />The raw sugar water or "juice' Nvas purified by adding "milk of lime" and carbon dioxide to <br />precipitate out the impurities. The milk of lime is produced by "calcining" the lime in the li;Ine <br />kiln and then adding water. Tlie kiln Nvas lined with a refractory material to withstand the high <br />operating temperatures. The "used" lime was regenerated for reuse by activated carbon. <br />Eventually the spent lime was pumped out to storage in the lime ponds. <br />20-3978-03. W36/2019766 Page 6 of 20 <br />© 1999, Kleinfelder, Inc. sentemba 9. 1999 <br />