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LFR Levine-Fricke SVOCS SVOCs were not detected above the laboratory reporting limit in samples collected from wells MW-1 through MW-5 during the third quarter 2003 sampling event. Metals i Metals were not detected above maximum contaminant levels (MCLS) in samples collected from wells MW-1 through MW-5 during the third quarter 2003 sampling event. The metal concentrations reported for monitoring well samples are shown on Figure 4. Based on a comparison of groundwater quality data between the downgradient wells and the upgradient well located at the Site, the tire fire does not appear to have affected groundwater quality beneath the Site. Zinc, a constituent of concern in the burn piles, was not detected above the laboratory reporting limits (0.025 milligrams per liter [mg/11) in groundwater samples collected from the five wells during the third ` quarter 2003. Additionally, lead, another potential constituent of concern, was not detected in groundwater samples collected from the five wells during the third quarter 2003 sampling event. Field Parameters Values of pH in groundwater samples collected from site monitoring wells were neutral and ranged from 7.65 in well MW-1 to 8.14 in well MW-2. Concentrations of total dissolved solids (TDS) in the groundwater samples collected from site wells ranged from 623 mg/l in the sample collected from MW-2 to 1,100 mg/l in the sample collected from MW-3. The secondary MCL for TDS is 500 mg/l. The sample collected from the upgradient well (MW-3) contains a higher concentration of TDS compared to the downgradient site wells, suggesting that the TDS concentrations detected are likely representative of background conditions. Turbidity concentrations measured in the field ranged from 797 nephelometric turbidity units (NTU) in the sample collected from MW-1 to 999 NTU in the samples collected from wells MW-2 and MW-5. Monitoring Parameters As presented in Figure 5, concentrations of monitoring parameters in groundwater •., samples were generally consistent across the Site. Concentrations of total alkalinity • ranged from 195 mg/1 in the sample collected from monitoring well MW-1 to 377 mg/l in MW-3. Analytical results for specific conductance for Site monitoring wells ranged from 1020 micromhos per centimeter (µmhos/cm; MW-2) to 1740 µmhos/cm (MW-3). _ Concentrations of nitrate detected in groundwater samples ranged from 1.0 mg/l in monitoring well MW-3 to 3.3 mg/1 in monitoring well MW-1. Concentrations of TTF QMR Q3-03(IMI-03)JEE Page 5