Laserfiche WebLink
0 01 <br />D. CORRAL HOLLOW SANITARY LANDFILL <br />CHSL is located at 31130 South Corral Hollow Road, in southern San <br />Joaquin County, approximately five miles south of the City of Tracy, at the <br />intersection of Interstate 580 and Corral Hollow Road. CHSL covers <br />approximately 58 acres, of which 43 acres was permitted disposal area. <br />The remaining area is comprised of access roads, storm water retention <br />ponds, setbacks for environmental monitoring, and firebreaks. Land within <br />1,000 feet of the facility is used for grazing and agriculture. <br />CHSL was certified closed in 1996. The closure cover consists of a two to <br />six-foot foundation layer under a one -foot minimum thick, low permeability <br />soil layer, covered by a one -foot thick vegetative surface layer. Currently <br />CHSL is under post closure maintenance. <br />REASON1.3 • .• - OF <br />PVC PIPES <br />The reason for installing PE tubing inside of existing PVC pipes is to reduce <br />the sample time spent, saving labor hours and labor costs. Currently, it <br />takes up to 5-45 minutes to collect a sample of air from the soil gas wells at <br />the various sites, depending upon well depth. By installing the tubes in side <br />the pipes, sample times may be reduced to as little as several minutes per <br />sampling well. <br />Soil Gas Monitoring Wells are located along the perimeter of the individual <br />landfills. Please refer to figures 1-4 for maps of the well locations. <br />It is the plan to bring all materials on site ready to install. It is possible that <br />some tubing may need to be perforated on site. If no on site perforation is <br />needed, then the on site work tasks will include: <br />1. the removal of existing connection valves; <br />2. assembly of the upgraded connection ports, PE tubes, and metal rod; <br />3. feeding of the PE tube inside the PVC pipe and lowering of the PE tube <br />until the tube reaches the bottom of the sampling well; <br />4. connect the new port to the top of the PVC pipe <br />5. cutting and removing any excess PE tube to complete the upgrade. <br />There are three different types of sampling wells that will require a change <br />to the as built sampling ports. At FHSL and NCRCSL, the PVC pipes are <br />Work Plan- Groundwater Monitoring Well Installation San Joaquin County <br />March 28, 2012 Department Of Public Works <br />2 Solid Waste Division <br />