ARCHIVED REPORTS_XR0007373 CASE 2

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AT&T—Lodi,Quarterly Groundwater Monitoring Report No 3 ATC Project No 75 75128 0001 October 4,2001 SThe groundwater elevations for wells MW 1 through MW3 measured at the time of this sampling event indicated that the groundwater flow direction is to the southwest, as illustrated on Figure 2, at a gradient of approximately 0 004 The groundwater gradient was calculated by geometric methods,i e,a three-point problem ATC will continue the quarterly groundwater monitoring and sampling at the site The next quarterly monitoring will occur in Septernber 2001 7.0 LE%UTATIONS AND ASSUMPTIONS ATC's professional services were performed, findings obtained and recommendations prepared in accordance with customary principles and practices in the fields of environmental science and engineering Thus warranty is in lieu of all other warranties either expressed or implied ATC is not responsible for the independent tconclusions, opinions or recommendations made by others based on the records reviewed, site inspection, field exploration and/or laboratory data presented in this report- It should be noted that all environmental assessments are inherently tmuted in the sense that conclusions are drawn and recommendations developed from information obtained from limited research and site evaluation Subsequent field investigations may diger from the conditions defined by this investigation Additionally, the passage of time may result in a change in the environmental characteristics at this site and surrounding properties This report is not a regulatory compliance audit All specific data generated and reports written for this project are the proprietary information of AT&T and will only be released to AT&T unless otherwise directed by law These data are for the sole use and reliance of AT&T The results presented in any oral or written reports are based upon the mfonination acquired during this investigation ATC considers business considerations set forth in this document to be the proprietary and confidential information of ATC This report and the information contained herein shall not be used for any purpose other than as specifically stated in this report and shall not be disclosed to any other party without ATC's written consent It must be noted that no investigation can absolutely rule out the existence of any hazardous materials at a given site This assessment was based upon prior site history and observable conditions and activities Existing ' hazardous materials and contaminants can escape detection using these methods The work performed in conjunction with this assessment and the data developed are intended as a description of ' available information at the dates and location given Tlus report does not warrant against future operations or conditions,nor does it warrant against operations or conditions present of a type or at a location not investigated 6