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PIP <br /> URS <br /> f Mr.Jeffrey Wong <br /> f<_ss San Joaquin Public Health Service <br /> Third Quarter 2003 Groundwater Monitoring Report <br /> June 11,2004 <br /> 'rs Page 4 of 4 <br /> SUMMARY <br /> The following summarizes the results of September 2003 groundwater monitoring. <br /> • Groundwater elevations measured during September 2003 were approximately—36 feet MSLD,the lowest <br /> == observed since September 1996. <br /> • TPH reported as unknown hydrocarbon was reported for two wells. <br /> i> • 1,2-DCA was reported for only two wells,DMW-2 and DMW-5,at concentrations consistent with previously <br /> reported ranges of concentrations for those wells.P g <br /> • PCE was not reported in any of the samples. <br /> If you have any questions or need additional information,please do not hesitate to call me at(916)679-2293. <br /> F <br /> Sincerely, <br /> URS Corporation Americas <br /> l` -Z A, <br /> Anthony Mindling,R.G. <br /> `= Project Geohydrologist <br /> l1 Attachments <br /> l List of Tables i <br /> Table 1 Monitoring Well Construction Details <br /> s Table 2 Water Level Data <br /> Table 3 Groundwater Analytical Results,TPH-diesel (Method 8015B),Volatile Organic Compounds <br /> and Oxygenates (EPA Method 8260B <br /> k= List of Figures <br /> Figure 1 Site Vicinity Map <br /> Figure 2 Site Location Map f <br /> Figure 3 Groundwater Elevation Contour Map, September 25,2003 <br /> Figure 4 PCE and 1,2-DCA Concentrations <br /> a <br /> i <br /> List of Appendices <br /> Appendix A Field Record of Water Sample and Chain-of-Custody Forms <br /> Appendix B Data Validation Summary and Analytical Laboratory Report <br /> I:r j K:Iwprocess\22736�3Q03AFP_rev03.doc <br />