Laserfiche WebLink
CENTRAL VALLEY REGIONAL WATER QUALITY CONTROL BOARD <br /> INSPE�REPORT <br /> DISCHARGER: California Concentrate Company 19 January 2018 <br /> LOCATION & COUNTY: 18678 N. Hwy 99, Acampo, San Joaquin County <br /> CONTACT(S): Dominic Alexander <br /> INSPECTION DATE: 12 January 2018 <br /> INSPECTED BY: Brendan Kenny & Howard Hold <br /> ACCOMPANIED BY: Dominic Alexander <br /> INTRODUCTION <br /> The California Concentrate Company processes grapes and barley. Wastewater generated from <br /> processing grape juice concentrate is pretreated to raise the pH prior to being discharged into the <br /> wastewater collection system. Other wastewater (wash down water) is collected in floor drains in the <br /> process buildings and gravity flows through a weir with a flow meter before being discharged into three <br /> unlined, aerated evaporation/percolation ponds. After wastewater is treated in the ponds the water <br /> may be distributed to percolation beds for disposal. The discharge is regulated under Waste Discharge <br /> Requirements (WDRs) Order 98-136. <br /> OBSERVATIONS AND COMMENTS <br /> Wastewater Pond 1 is the western most pond and had approximately two feet of freeboard. The pond <br /> was equipped with two aerators (Figure 1). Both aerators were functioning. Odors associated with <br /> wastewater were observed intermittently around the pond perimeter. The pH in the pond was <br /> measured to be 4.5 (below the WDR limit of 6.5-8.5). Dissolved oxygen measured in the pond was <br /> greater than 1.0 mg/I. <br /> Wastewater Pond 2 (Figure 2), had approximately two feet of freeboard. The pond was equipped with <br /> one aerator, which was not operating. The pH was measured to be 4.8. Dissolved oxygen was <br /> measured to be .24 mg/l, which is below the 1.0 mg/I requirement in the WDRs. <br /> Wastewater Pond 3 (Figure 3) the eastern most pond, had approximately 1 foot of water in the bottom <br /> (Figure 3). No measurement of the pH or dissolved oxygen was taken. <br /> The percolation/evaporation beds (Figure 4 and 5) contained minimal standing water. Staff also <br /> observed the area adjacent to the wastewater pond where solids were previously stored and the <br /> condition of Groundwater Monitoring Well 5 (Figures 6, 7 and 8). <br /> Summary: <br /> Odors associated with wastewater were detected periodically in the vicinity of the wastewater ponds. <br /> The low pH measured in Ponds1 and 2 is a violation of the WDRs. The low concentration of dissolved <br /> oxygen in Pond 2 is a violation of the WDRs. <br /> Brendan Ke y, Engineering Geologist <br /> Inspection No: 31220604 <br />