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-0 <br />CITY OF STOCKTON <br />DEPARTMENT OF PUBLIC WORKS <br />CITY HALL <br />425 N. EL DORADO STREET <br />STOCKTON, CA 95202-1997 <br />March 3, 1995 <br />ED PADILLA, <br />Environmental <br />Public Health <br />P.O. Box 2009 <br />Stockton, CA <br />SUPERVISING REHS <br />Health Division <br />Service <br />95201 <br />• <br />AUSTIN ROAD AND FRENCH CAMP LANDFILL GAS MONITORING RESULTS <br />Attached are copies of the 1995 first quarter gas monitoring <br />results tested by Twining Laboratories. <br />The result indicates methane gas exceeding the lower explosive <br />limits at Soil gas probe #7 (8.50%) at French Camp landfill and <br />Soil gas probes #2 (7.25%) and #6 (7.25%) at Austin Road landfill. <br />As mentioned earlier, the above gas probes are located in refuse <br />and none of the soil gas probes are located at the landfill <br />property boundary, due to the natural waterway adjacent to the <br />probes locations. <br />The City of Stockton feels that public health and safety is not <br />endangered because of the following reasons: <br />1. The gas migration cannot occur due to the hydraulic barrier <br />(walker Slough and French Camp Slough) adjacent to Soil gas <br />probe #7 at French Camp landfill, and (Little John's <br />Creek) adjacent to Soil probe #3 and #6 at Austin Road <br />landfill <br />2. Both the Austin Road and French Camp landfill is gated and <br />fenced for security purposes and the scale houses and all <br />cargo boxes tested 0% LEL. <br />"STOCKTON ... CALIFORNIA'S SUNRISE SEAPORT" <br />06 - <br />