PR0535342 - Laserfiche WebLink

Home Browse Search

i LFR Levine-Fricke WOO SVOCs were not detected above laboratory reporting limits in samples collected from wells MW-1 through MW-5 during the fourth quarter 2003 sampling event. Metals Metals were not detected above maximum contaminant levels (MCLs) in samples collected from wells MW-1 through MW-5 during the fourth quarter 2003 sampling event. The metal concentrations reported for monitoring well samples during 2003 summarized in Table 1 and are shown on Figures 6, 7, and 8. 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 reported above laboratory reporting limits in groundwater samples collected from two of the five wells during the fourth quarter 2003 at very low concentrations ranging from 0.0054 milligrams per liter (mg/1) in the sample collected from MW-2 to 0.057 mg/I in the sample collected from MW-4 (Figure 8). Additionally, lead, another potential constituent of concern, was not detected in groundwater samples collected from the five wells during the fourth quarter 2003 sampling event. Field Parameters Values of pH in groundwater samples collected from site monitoring wells were generally neutral and ranged from 7.4 pH units in well MW-3 to 7.7 pH units in well MW-1. Concentrations of total dissolved solids (TDS) in the groundwater samples collected from site wells ranged from 711 mg/I in the sample collected from MW-1 to 1,180 mg/I in the sample collected from MW-3. The secondary MCL for TDS is 500 mg/1. 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 1,930 nephelometric turbidity units (NTU) in the sample collected from MW-1 to 5,300 NTU in the sample collected from well MW-5. Monitoring Parameters `A Analytical results for selected groundwater monitoring parameters during 2003 are shown in Figures 9, 10, and 11. As presented in Figure 11, concentrations of monitoring parameters for the samples collected during the fourth quarter 2003 were generally consistent with previous sampling events. Concentrations of total alkalinity i ... TTFS QMR Q4.03.FINAL3EE Page 5 s i �