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Kennedy/Jenks Consultants • Boiler Water Blowdown: One boiler is located at the Facility to provide steam for the still. A blowdown is performed to remove scale buildup from the boiler which produces a process water stream. • Distillation: Distillery process water or stillage is produced during the fractional distillation process and consists of the spent distilling feed material. • Non-Contact Cooling Water: Non-contact cooling water is used in the distillery cooling tower and refrigeration evaporative condensers. Both one-pass and recycled non- contact cooling water blowdown are generated at the Facility. • Tank and Barrel Sanitation: Wine storage tanks and barrels are emptied and cleaned on a regular basis. The rinse water, containing cleaning chemicals, contributes to the Facility process water. • Filter Cleaning: Three filter types are used at the facility: a vacuum filter, a pressure leaf filter, and a plate and frame filter. The filters are operated as a batch process and filter cleaning produces a process water stream. • Vacuum Filter Cake Process Water: A vacuum filter is used to remove solids during the wine making process. The vacuum filter solids cake produces a process water stream during the period of solids draining and drying and prior to offsite disposal. • Centrifuges: Three centrifuges are used during crush to remove solids from the white or blush juices prior to fermentation. Washing of the centrifuges produces a process water stream. 4.2.2 Process Water Management System As mentioned previously, process water is directed to a two compartment sump located at the Facility. Prior to land application treatment and disposal in the vineyards, the process water is pumped through a rotary parabolic screen for solids removal. 4.3 Process Water Characterization Process water characterization will include both flow and chemical constituent information. In order to adequately characterize some of the process water streams, a minimum of three representative samples are proposed for collection from each stream during typical operations. In some cases, samples will need to be collected from process areas during both crush and _ non-crush seasons depending upon process operations. Additional sampling may be required if the variability among the first three samples is high. 4.3.7 Flow Monitoring Average daily flow values are available for the combined process water effluent from the sump and are summarized in Table 9. Individual stream flow data will be measured where possible ' and estimated where measurements are not possible and used to evaluate the loading characteristics of each stream. Groundwater Protection Work Plan, The Wine Group Page 4-2 Franzia Winery, Ripon, California