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Musco Family Olive Company - 13 - 12 December 2006 between late 2002 and late 2004. However, the sampling points prior to and after this year indicate a small to moderate decreasing fluctuation of chloride concentrations in groundwater. It is important to note, that chloride and sodium concentrations, including TDS, have been detected well above the interim limits from the start of groundwater sampling. The TDS value in well MW-13 from April 2002 was 3,000 mg/L. The most recent sampling event (June 2005) detected TDS at a concentration of 2,300 mg/L. Bicarbonate concentrations are also elevated in MW-13. Bicarbonate has been detected in the process wastewater streams, the 1-million gallon pond, and the Reservoir. Bicarbonate appears to be naturally occurring in groundwater within this region as evidenced by the analytical results for the Regional Well. However, groundwater that is outside of the spray irrigation area or impact zone, concentrations of bicarbonate are relatively low. In well MW-13, bicarbonate is being supplied to groundwater from a source other than.spray irrigation. The source of bicarbonate for well MW-13 is likely the Reservoir and not upgradient groundwater j since well MW-1, up-gradient of well MW-13, has lower bicarbonate concentrations. Also the I Regional Well located outside the impact zone has lower bicarbonate concentrations. Well MW-14 Well MW-14 is near the western end of the Reservoir, north of Field 95. Based on Musco's groundwater contour maps, well MW-14 is situated down-gradient of. Field 95. Well MW-14 is located approximately 100 feet south from the upland spring. Chloride and sodium have increased and if compared to the interim limits, upland spring water, and the Regional well it is apparent the concentrations detected in well MW-14 compare more favorably with concentrations found in other impacted wells shown in Table 8 above. TDS has increased over time as indicated in the TDS Time Series plot. The initial TDS value collected in November 2002 was 2,300 mg/L. .The June 2006 TDS concentration was 3,000 mg/L. Bicarbonate is present in well MW-14 but remains relatively stable at a concentration relative to MW-1. Since well MW-1 and M-14 have increasing trends of chloride, sodium, and TDS over time, it is apparent that groundwater beneath Field 95 has been impacted by spray irrigation. Well MW-15 Well MW-15 is in the bypass channel north of the Reservoir. Chloride and sodium concentrations detected in this well are below the interim standards and appear to be relatively stable over time. However, when these concentrations are compared to the Regional Well outside of the impact zone, it is apparent that groundwater has been impacted by spray irrigation.. TDS concentrations also appear to be relatively stable with an initial concentration of 1,400 mg/L measured in November 2002. The most recent TDS concentration measured in June 2006 was 1,700 mg/L.- Although well MW-15 has relatively stable TDS, chloride, and sodium concentrations, bicarbonate is increasing over time. Initial measurements (November 2002) of bicarbonate were detected at a concentration of 670 mg/L and have increased to 950 mg/L in June 2006. Groundwater in the vicinity of well MW-15 flows north-northeast away from the Reservoir that contains high concentrations of bicarbonate. It is apparent from the time series plot, the Reservoir is leaking wastewater that is impacting groundwater in the vicinity of well MW-15