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Mr. Mike Hansen -4- 18 September 1987 <br /> E <br /> 10- The recovery wells proposed appear to be in too <br /> small a grouping to effectively control the entire <br /> plume of =contaminat d ground water. <br /> 11- How long : is the biodegradation predicted to take <br /> to clean ' up the site? How will this be effected <br /> by annual temperature changes? <br /> Overall the biodegradation plan shows forethought by using soils <br /> from the site to help determine the indigenous bacterial <br /> populations and required nutrients During your pilot study you <br /> should also consider' the practicality of a recycling <br /> injection/containment system. <br /> As a final note, what+ do you plan to do with the treated <br /> effluent? <br /> If you have any questions, please call Gordon Lee Boggs at (916) <br /> 361-5740 or Gary S. Johnson at (916) 361-5731. <br /> GARY S. JOHNSON <br /> Engineering Geologist <br /> GLB/GSJ:gj <br /> cc: Ms. Laurie Cotull�a, San Joaquin County Local Health <br /> District <br /> I <br /> i% <br /> i <br /> li <br /> I� <br /> G <br />