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Mr. Todd Del Frate -2- <br />FIRST QUARTER 2008 GROUNDWATER MONITORING REPORT, <br />CORRAL HOLLOW SANITARY LANDFILL <br />MW -8 groundwater elevation allowed us to redraw the groundwater contours. The resulting <br />software -generated contour map shows a gradient in the shallow aquifer toward the landfill. This <br />result is consistent with our conjecture that a groundwater "mound" is present near SB -1 as a <br />result of local recharge, possibly occurring between the landfill property and the freeway. <br />You have received our revised Closure and Postclosure Maintenance Plan for the Corral Hollow <br />Landfill, incorporating our proposed closure over the portions of our property where we found <br />refuse beyond the existing closure cap. Unfortunately, CalTrans declined to participate in the <br />preparation of a joint document, forcing us to submit independently. We intend to proceed with <br />the extension of the closure cap within our property independently unless directed otherwise. <br />I certify under penalty of law that I have personally examined and am familiar with the information <br />submitted in this document and all attachments and that, based on my inquiry of those individuals <br />immediately responsible for obtaining the information, I believe that the information is true, <br />accurate, and complete. I am aware that there are significant penalties for submitting false <br />information, including the possibility of fine and imprisonment. <br />If you have any questions, please call me at (209) 468-8504. <br />Sincerely, <br />W. MICHAEL CARROLL, PE <br />Senior Civil Engineer <br />WMC:Ij <br />WlCorral Hollow\Groundwater Monitoring\Repts2008\lstQ\CHlstQtr0Blefter.doc <br />Enclosure <br />c: Robert McClellon, Environmental Health Department <br />LA 21850 <br />