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e , • 0 <br /> AS APPLIED SCIENCE AND ENGINEERING, INC. <br /> Cons-th-7g Scientists and Engineers <br /> I1I1 <br /> 6r0unora ter Investi a tions Civil and CnvironnentoI En ineerh7 <br /> November 27, 200 949 5th St.Suite 110,Davis.CA 95616 Tel.(530)756-2288 Fax(530)756-1648 entail asedavisonother.com <br /> Mr. Tim O'Brien <br /> Central Valley Regional Water Quality Control Board <br /> 3443 Routier Road <br /> Sacramento, CA 95827-3003 <br /> EASTSIDE WINERY, LODI,SAN JOAQUIN COUNTY <br /> GROUNDWATER MONITORING REPORT, FOURTH QUARTER,2000 ^ <br /> This facility has three monitoring wells adjacent to seepage ponds used for the disposal of <br /> winery wastewater. Figure 1 is a sketch map of the disposal pond area showing the three <br /> monitoring wells. <br /> Quarterly sampling for the fourth quarter was performed on 9 October 2000. The depth <br /> to water was measured in each well prior to sampling. The measurements are given in <br /> Table 1. <br /> Table 1. Water Level Elevations Measured in Eastside Winery Monitoring Wells <br /> Date MW 1 MW 2 MW 3 <br /> RPE: 52.19 RPE: 59.99 RPE: 51.07 <br /> XCOOR: -1269.07 XCOOR: -574.60 XCOOR: 0 <br /> YCOOR: -590.70 YCOOR: -803.35 YCOOR: 0 <br /> 18 August 2000 26.31 24.82 1 39.92 <br /> 1 9 October 2000 31 .88 28.03 39.37 <br /> The gradient calculated from these measurements is 0.0149 ft/ft, 176 degrees clockwise <br /> from North. The gradient is represented by an arrow on Figure 1. <br /> Based on the water level elevations,MW 1 and MW2 contained about 6 gallons of water <br /> and MW3 contained about 13 gallons. The wells were sampled with a portable <br /> submersible pump(Voss EZ pump) inserted into the top of a disposable bailer. This <br /> device is used for purging and sampling. While the well is being purged,water flows <br /> into the well, through the disposable bailer, and out through the pump. The pump <br /> discharge hose is connected to a flow-through cell in which the pH and Electrical <br /> Conductivity are measured When the purge is complete,the flow rate is reduced to 200 <br /> ml/minute for 10 minutes. The sample is taken from the disposable bailer when it is <br /> retrieved. A new bailer N-,-as used for each well. Measurements recorded during purging <br /> are shown in Table 2. <br />