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Tim Ross <br /> October 24 , 1990 <br /> Page 2 <br /> -status of investigation and cleanup activities <br /> including the results of all investigations <br /> completed to date; <br /> -proposed continuing or next phase of investigation; <br /> -method of cleanup proposed or implemented, <br /> schedules for the completion of the investigation <br /> of the site and remediation; <br /> -monitoring well data including groundwater <br /> elevation, pH, conductivity, gradient; <br /> -analytical results of groundwater or soil sampling; <br /> and <br /> -a site map showing the "zero line" of <br /> contamination, if known, and changes in the above <br /> measurements over the last quarter. <br /> On October 10 , 1990, an inspector from our office conducted a site <br /> visit to determine the location and condition of the monitoring <br /> wells. The inspector was unable to locate many of the previously <br /> installed monitoring wells due to construction of the building and <br /> subsequent landscaping. However, monitoring wells number two (2) <br /> and seven (7) were located and found to be in a state of disrepair. <br /> Both well casings are damaged and unsealed. Under San Joaquin <br /> County Ordinance 1862 , you are required to repair or destroy these <br /> wells immediately. Water tight surface seals should be provided <br /> until provisions can be made for repair or destruction of these <br /> wells. <br /> If you have any questions, please call Eleanor Ratliff, REHS, of my <br /> staff at (209) 468-3454 . <br /> Jogi Khanna, M.D. , M.P.H. <br /> Health Of cer <br /> rie A. Coottulllama, REHS,%Program Manager <br /> nvironmental Health Division <br /> LAC/ER:nr <br /> c: Stone Brothers <br /> 1024 W. Robinhood Drive <br /> Stockton, CA 94207 <br />