Laserfiche WebLink
CORRAL HOLLOW SANITARY LANDFILL LFG MIGRATION MONITORING <br /> Landfill Location <br /> The Corral Hollow Sanitary Landfill is located on Corral Hollow Road, approximately five miles <br /> south of Tracy, California(Figure 1). The site is a Class III landfill which stopped accepting <br /> waste in May 1995. <br /> Monitoring System and Equipment <br /> In accordance with closure regulations, a network of seven perimeter gas monitoring wells was <br /> installed in 1995 (Figure 2). <br /> The seven wells were monitored for methane on March 7, 2003, by SCS Field Services. SCS <br /> used a Landtec GEM 500 Gas Extraction Monitoring Instrument which was calibrated prior to <br /> sampling. The Landtec GEM 500 is capable of measuring methane, carbon dioxide, oxygen, and <br /> nitrogen (balance gas) concentrations. <br /> Results <br /> The landfill gas monitoring results from the Corral Hollow Sanitary Landfill indicates that no <br /> combustible gas in excess of the regulatory limit is present at 19 of the 20 monitoring probes <br /> (Table 1). <br /> Probe GW-6-deep contained levels of combustible gas which exceed the regulatory limit during <br /> this monitoring period. Measurements taken in December 2002 found the combustible gas <br /> concentrations at this probe to be 14.7%, while readings taken during this quarterly monitoring <br /> event show that the concentration is 11.4%. This indicates that the concentration of combustible <br /> gas at this location is continuing to decrease (Figure 3). <br /> Corral Hollow Landfill April 10,2003 <br /> San Joaquin County 2 Quarterly LFG Monitoring <br />