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i <br /> Mr . Gordon Boggs <br /> RWQCB - Central Valley Region <br /> November 8, 1988 <br /> Page 4 <br /> 5 ) Contingency plan should the monitoring system show an induced <br /> movement of gasoline hydrocarbons off-site : <br /> Based on computer modelling of groundwater flow performed by <br /> Dr . Calvin Chein, we do not anticipate loss of hydraulic <br /> control . Should water from the injection wells move off-site, <br /> that water would be carrying nutrients and oxygen. The <br /> nutrients and oxygen would stimulate growth in hydrocarbon <br /> degrading bacteria, effecting reduction or elimination of <br /> hydrocarbons encountered by the nutrient and oxygen-rich, <br /> water . When nutrients (gasoline dissolved in groundwater <br /> being one of the nutrients ) are exhausted, the bacteria return <br /> to normal levels . Nutrient and oxygen-rich water degrading <br /> any gasoline hydrocarbons encountered is an effect of insitu <br /> bioremediation that acts as an automatic fail-safe and is a <br /> major benefit of using this clean--up approach. <br /> Kayo is prepared to proceed immediately with construction and <br /> installation of the bioremediation system pending your approval of <br /> the proposed balanced injection/recovery system. <br /> Should you have any questions or comments, please call me at the <br /> Lodi office . <br /> Sincerely, Lodi Office : 900 S Cherokee LN <br /> Lodi , CA 95240 <br /> Gre6„��� Phone : 209/358-2731 <br /> yf P . Fletcher <br /> Coordinator - Environmental Affairs <br /> GPF/dg <br /> Enclosure_ <br /> cc : s . Laurie Cotulla <br /> San Joaquin County Env. Health <br />