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KLEINFELDER <br /> EXPECT MORE <br /> The RWQCB mandates discharge water may not cause degradation of groundwater. <br /> According to the current WDR Order No. R5-2006-0114, discharge water must not <br /> contain any of the following constituents listed in the following Table 1 in concentrations <br /> greater than listed or greater than natural background quality whichever is greater. <br /> TABLE 1 <br /> Constituent = Limitation <br /> Boron 0.7 mg/L <br /> Chloride 106 mg/L <br /> Iron 0.3 mg/L <br /> Manganese 0.05 mg/L <br /> Sodium 69 mg/L <br /> Total Coliform <2.2 <br /> Organisms MPN/100ml <br /> Total Dissolved Solids 450 mg/L <br /> Total Nitrogen 1 mg/L <br /> Nitrate (as N) 10 mg/L <br /> Ammonia (as NH4) 1.5 mg/L <br /> Bromoform 4 µg/L <br /> Bromodichloromethane 0.27 µg/L <br /> Chloroform 1.1 µg/L <br /> Dibromochloromethane 0.37 /l- <br /> Please <br /> LPlease note that natural background conditions have not yet been established for some <br /> of the proposed holding pond and land application areas, which is part of the reason for <br /> this workplan. Additionally the RWQCB has indicated that treated wastewater can only <br /> be applied to areas of the site that overlie shallow groundwater with an average TDS of <br /> 850 mg/I or greater. <br /> The southwest portion of the site by the WWTP and the northeast portion of the site by <br /> proposed holding Pond No. 1 have been monitored for several years and yield data that <br /> can be used to evaluate background groundwater values of various constituents of <br /> concern. Monitoring wells MW-8 and MW-9 were also monitored for several years in <br /> the southeast portion of the site, also yielding potential useful data in that area. <br /> However no recent groundwater quality data since May of 2004 has been obtained in <br /> the southeast portion of the site. <br /> 48093.E01/ST07R052/CJC/Iv Page B-3 <br /> ©2007 Kleinfelder, Inc January 26,2007 <br />