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(KLKL E/NFELOER <br /> Bright People Fight Solutions. <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 first quarter 2015. The following conclusions are a summary of the <br /> notable groundwater characteristics. <br /> 5.1 CONCLUSIONS <br /> During the first quarter 2015, the groundwater flow direction in the vicinity of the Plant Area was <br /> to the south, with a gradient of 0.01 ft/ft. The groundwater flow direction in the N/SLAIAs was <br /> calculated to be towards the west, with a gradient of 0.05 ft/ft. The groundwater flow direction in <br /> the MARIA was estimated to be towards the west. The gradient was not calculated due to the <br /> near linear orientation of the wells. These findings are generally consistent with past monitoring <br /> events. <br /> The groundwater quality in the MARIA was generally consistent with historical results. The TDS <br /> concentrations ranged from 720 to 1200 mg/L. The TDS concentrations were above the <br /> recommended SMCL (500 mg/L) in all MARIA wells sampled. Nitrate as N concentrations were <br /> below the MCL (10 mg/L) in two of the three MARIA wells. Only one well (W-5) had a <br /> concentration equal to the MCL. The pH concentrations were within the acceptable Secondary <br /> Maximum Contaminant Level (SMCL) ranges of 6.5 to 8.5 in all wells. Ammonia was not <br /> detected and Total Kjeldahl Nitrogen (TKN) ranged from 0.20 to 0.50 mg/L. <br /> The groundwater quality from the N/SLAIA was also generally consistent with historical results. <br /> The concentrations of TDS ranged from 460 to 990 mg/L. The TDS concentrations were above <br /> the SMCL (500 mg/L) in five of the six wells. The concentrations of nitrate as N were equal to or <br /> above the MCL of 10 mg/L in four of the six wells. The pH concentrations were within the <br /> acceptable Secondary Maximum Contaminant Level (SMCL) ranges of 6.5 to 8.5 in all wells. <br /> Ammonia was not detected in any of the N/SLAIA wells and TKN ranged from non-detect to <br /> 0.36 mg/L. <br /> TCO and FCO were detected in one well (W-1) in the MARIA. In the N/SLAIAs TCO and FCO <br /> was detected in L-1. Only TCO was detected in L-6. <br /> 00101486.8/SAC15R19291 Page 13 of 17 May 6, 2015 <br /> ©2015 Kleinfelder <br />