Laserfiche WebLink
Fourth Quarter/Annual <br /> 2008 Groundwater <br /> ARCADIS Monitoring Report <br /> Chevron Bulk Fuel Terminal <br /> 100-1621 <br /> ' 22888 Kasson Road <br /> Banta,California <br /> Annual Summary of 2008 Monitoring and Sampling Results <br /> The following summarizes the results of the groundwater monitoring and reporting <br /> program for 2008. <br /> ' Groundwater Flow <br /> ' Groundwater measurements and analysis suggests that groundwater flow ranged <br /> between the southeast and north, however primarily toward the northeast,in the <br /> Upper A zone.Groundwater flow ranged between the northeast and north in both the A <br /> ' and B zones. Groundwater elevation contour and isoconcentration maps for the first, <br /> second and third quarters are included as Appendices I and J,respectively. <br /> Groundwater elevation contour and isoconcentration maps for the fourth quarter of <br /> 2008 are included as Figures 3 through 10 of this report. <br /> Historic groundwater level measurements are presented in Table 1 of Appendix D. <br /> ' Hydrographs depicting changes in groundwater elevations over time are presented in <br /> Appendix C(Figures 1 through 3). Historic hydraulic gradients are presented in <br /> Table 2 of this report. <br /> ' Groundwater Chemistry <br /> Groundwater samples were collected from all wells in accordance with the MRP(which <br /> was revised and reissued on November 29, 2007)during 2008. Groundwater samples <br /> were routinely analyzed for concentrations of TPH-DRO,TPH-GRO, BTEX and fuel <br /> oxygenates including MTBE,TAME and TBA. Maximum constituent concentrations <br /> are presented below. <br /> Ground- Maximum Constituent Concentration in Itg/L (Well ID/Quarter) <br /> water First throw h Fourth Quarter 2008 <br /> ZonesTPH-DRO TPH-GRO Benzene Toluene Ethyl- Total <br /> benzene Xylenes <br /> ' Upper 2200,000° 25,000 1,900 250 550 2,600 <br /> zone MW-38UA MW-36UA EW-1 MW-67UA MW-67UA MW-67UA <br /> 1Q2008 3Q2008 302008 1Q2008 1Q2008 3Q2008 <br /> 190,000' 970 N.D. N.D. N.D. N.D. <br /> ' A zone MW-7A MW-7A All Wells All Wells All Wells All Wells <br /> 102008 3Q2008 2008 2008 2008 2008 <br /> 340 N.D. N.D. N.D. N.D. N.D. <br /> B ZOne MW-13B Al Wells All Wells All Wells All Wells All Wells <br /> ' 1Q2008 2008 2008 2008 2008 2008 <br /> ' 14 of 17 <br />