Laserfiche WebLink
2 <br /> January 16,2012 <br /> Cardno ERI 278913.Q114 Former Mobil Service Station 99CAS,Stockton,California <br /> WORK IN PROGRESS <br /> Cardno ERI is in the process of obtaining building permits for the installation of an AS/SVE system. System <br /> installation is scheduled for first quarter 2012. <br /> CONCLUSION <br /> Groundwater elevations at the site are currently near the maximum level recorded during the monitoring <br /> program. Concentrations of BTEX reported from on-site well MW1 and TPHg and BTEX reported from on-site <br /> well DW2 are not consistent with previous site data. Concentrations of BTEX reported off-site in wells MW7, <br /> MW8, and DW4 are not consistent with previous site data. Cardno ERI will continue to monitor these trends. <br /> The remaining results are consistent with historical data for the site. <br /> The groundwater flow direction in the shallow zone is towards the east under a hydraulic gradient of 0.004 with <br /> a radial outward flow from EX1. The groundwater flow direction in the deep zone is towards the northeast under <br /> a hydraulic gradient of 0.003. <br /> LIMITATIONS <br /> For any documents cited that were not generated by Cardno ERI, the data taken from those documents is used <br /> .as is" and is assumed to be accurate. Cardno ERI does not guarantee the accuracy of this data and makes no <br /> warranties for the referenced work performed nor the inferences or conclusions stated in these documents. <br /> This document was prepared in accordance with generally accepted standards of environmental, geological, <br /> and engineering practices in California at the time of investigation. No soil engineering or geotechnical <br /> references are implied or should be inferred. The evaluation of the geologic conditions at the site for this <br /> investigation is made from a limited number of data points. Subsurface conditions may vary away from these <br /> data points. <br /> Please contact Mr. Greg A. Gurss, Cardno ERI's project manager for this site, at areg.gurss(�cardno.com or at <br /> (707) 766-2000 with any questions regarding this report. <br /> Sincerely, NAC GFS <br /> R,rMARoQ �p <br /> C N D <br /> Q �J * � No. 877 `� * <br /> Exp. 7 31 13 <br /> 9 �� <br /> Jennifer L. Lacy David R. Daniels ��OF CM-W <br /> Senior Staff Scientist P.G. 8737 <br /> for Cardno ERI for Cardno ERI <br /> 707 766 2000 707 766 2000 <br /> Email: iennifer.lacy(a)_card no.com Email: david.daniels(cDcardno.com <br />