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Table 7. Third Quarter 2009 Well- <br /> Water Samples with Concentrations <br /> Exceeding the Interim Limitations <br /> Cited in the WDRs. <br /> Constituent 9 wells <br /> No duplicates <br /> pH 1/9 <br /> Boron (mg/L 7/9 <br /> Chloride (mg/L 9/9 <br /> Iron (mg/L) 3/9 <br /> Manganese (mg/L) 8/9 <br /> Sodium (mg/L) 9/9 <br /> Total Coliform Organisms 2/9 <br /> (MPN 100/mL) <br /> Total Dissolved Solids 9/9 <br /> (mg/L) <br /> Total Kjeldahl Nitrogen 1/9 <br /> (mg/L) <br /> Nitrite as N (mg/L) 0/9 <br /> Nitrate as N (mg/L) 3/9 <br /> Ammonia as N(mg/L) 1/9 <br /> Bromoform (pg/L) 0/9 <br /> Bromodichloromethane 0/9 <br /> (lig/L) <br /> Chloroform (pg/L 0/9 <br /> Dibromochloromethane 0/9 <br /> pg/L <br /> 3.2.1 Total Dissolved Solids (TDS) <br /> Figure 5 shows TDS isoconcentration lines constructed from the Third Quarter <br /> 2009 well water sample results. The general spatial trends in TDS concentrations <br /> represented by these maps are summarized below. <br /> Beneath the WWTF, Third Quarter 2009 TDS concentrations in the nine WWTF <br /> monitoring well samples ranged from 710 to 3,480 mg/L. The TDS concentrations <br /> generally are highest in the vicinity of LAS-1 and -2 and down gradient of the <br /> storage ponds, which is consistent with previously reported conditions and TDS <br /> concentrations. <br /> 3.2.2 Nitrogen <br /> Nitrite + Nitrate: Comparison between nitrite + nitrate (NO2+NO3) and nitrate-only <br /> (NO3) concentrations indicate that almost all of the NO2+NO3 is in the NO3 form <br /> (Table 6). Therefore, discussion of monitoring results focuses on NO3 <br /> concentrations and distributions. Figure 6 shows NO3 isoconcentration lines <br /> constructed from the Third Quarter 2009 monitoring well water sample results. <br /> - 16 - <br />