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Mr. Gabriel Gonzalez, SJCEHD May 12,2015 <br /> Supplemental Information to Support Environmental Case Closure Project No.2129-1140-01 <br /> 7835 Thornton Road (formerly 1 140 W. Hammer Lane), Stockton, CA <br /> Page 4 <br /> with an incomplete knowledge of the subsurface conditions present. More extensive <br /> studies may be performed to reduce uncertainties. This document is solely for the use <br /> and information of our client unless otherwise noted. <br /> If you have any questions or comments concerning this document, please contact Scott <br /> Bittinger at(530) 676-2062 or Jay Johnson at (530) 676-6000. <br /> Sincerely, <br /> 57-KATU5 ENVIKONMENTAL, INC. <br /> ;► may /„ '0 <br /> • t <br /> Scott G. Bittinger, P.G. 7477 `. J R. hnson, <br /> P.G. <br /> Project Manager Principal Geologist <br /> NOW <br /> Attachments: Table 1 Estimated Time to Reach Water Quality Goals at Well <br /> MW-12 <br /> Appendix A Table of Historical Soil Analytical Results, 1987 to 2008 <br /> Appendix B Computation Sheets <br /> cc: Mr. Carl Knowles, Knowles Family Trust <br /> Mr. James Barton, California Regional Water Quality Control Board <br /> KAKnowles-Hammer Lane\Reports\knowles-hammer-supplemental-closure-info.doc <br />