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KLE/NFELDER <br /> \ /ensm voei..erensmno. <br /> 5 CONCLUSIONS AND RECOMMENDATIONS <br /> The conclusions and recommendations are derived from groundwater sampling activities at the <br /> ' California Natural Products facility located in Lathrop, California and are based on the activities <br /> conducted during the second quarter 2014. The following conclusions are a summary of the <br /> notable groundwater characteristics. <br /> 5.1 CONCLUSIONS <br /> • During the second quarter 2014, the groundwater flow direction in the vicinity of the <br /> Plant Area was to the south, with a gradient of 0.007 ft/ft. The groundwater flow <br /> direction in the N/ALAIA was calculated to be towards the west, with a gradient of 0.003 <br /> ' ft/ft. The groundwater flow direction in the MARIA was estimated to be towards the west. <br /> The gradient was not calculated due to the near linear orientation of the wells. These <br /> 1 findings are generally consistent with past monitoring events. <br /> ' • Groundwater sample results were compared to the California Environmental Protection <br /> Agency, Central Valley Regional Water Quality Control Board, A Compilation of Water <br /> Quality Goals, 2011. <br /> • The groundwater quality in the MARIA was generally consistent with historical results. <br /> The TDS concentrations ranged from 790 to 1,100 mg/L. The TDS concentrations were <br /> above the Recommended Level SMCL (500 mg/1) in all and above the Upper Level <br /> (1,000 mg/L) in one well at the MARIA wells sampled. The Nitrate as N concentration in <br /> one well (W-5) was equal to the MCL (10 mg/I). the remaining samples were below the <br /> MCL. <br /> The groundwater quality from the N/SLAIA was also generally consistent with historical <br /> results. The concentrations of TDS ranged from 510 to 810 mg/L and were above the <br /> SMCL (500mg/1) in all of the six wells. The concentration of nitrate as N was above the <br /> MCL of 10 mg/L in four of the six wells. <br /> Fecal coliform organisms were not detected in any of the nine groundwater samples <br /> collected at the site during this quarter. However, total coliform was detected in one <br /> sample in the MARIA equal to the detection limit of 1.1 MPN/100ml. <br /> A101486.7/SAC14R02453 Page 11 of 14 July 25, 2014 <br /> ©2014 Kleinfelder <br />