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LOCATION OF NEARBY WATER WELLS <br /> Included in Appendix F is a map of nearby water <br /> wells(Exceltech, 1987)derived from search of <br /> government files,private records, and site visits do <br /> TVG's production manager,Mr Clayton Henke <br /> was contacted by HLA to confirm the existence of <br /> mapped production wells(process water)at <br /> TVG's plant Mr Henke confirmed that the four <br /> wells on the map were in operation and identified <br /> ' an additional production well which has also been <br /> plotted on the map These five production wells <br /> have been installed over the last 25 years, range 1n <br />' depth from 320 to 465 feet bgs, and are all <br /> periodically in operation dunng the year, <br /> especially in the processing season The closest of <br />' these 1s approximately 300 feet south of the former <br /> USTs Two additional irrigation wells are located <br /> at 150 feet northeast(Lopez well)and 350 feet <br /> west-northwest of the former USTs location As <br /> previously discussed, both of these irrigation wells <br /> have been sampled in cooperation with the <br /> PHS/EHD, and the analytical results are listed in <br /> Table 1 The irrigation well to the west-northwest <br /> was sampled in 1988 and the Lopez irrigation well <br /> has been sampled at least three times by TVG <br />' consultants(1989, 1993, and 1999) No detectable <br /> TPHg or BTEX have been reported 1n any of the <br /> samplings The 1999 sampling of the Lopez well <br />' included analyses for the five oxygenates and <br /> 1,2-DCA and none of these analytes were detected <br /> above normal reporting limits <br /> 1 <br />' L 1300001387371WP\38737N19 Harding Lawson Associates 20 <br />