Laserfiche WebLink
Sampling Equipment <br /> Interim gas sampling probes were used to monitor suh=fice gases at the landfill <br /> ; <br /> Each probes consists of a S-foot long, %®inc diameter stainless steel rimeter, <br /> P�Ik, with 1,+,inch holes <br /> gyred every 2 inches at Clic bottom 18 inch to allow for gasex'to migrate into the probes. A <br /> pointed tip was welded to the end of the probe for better penetration. <br /> ball valve and brass fitting were installed at the top of each probe to contain gas pressures and <br /> facilitate instrument hook-up to the probe.T he valves were left closed except during monitoring <br /> or kstrurnent reading. Each probe is tagged a brass plate and identified as "(3p_," ugb <br /> "GP-10". <br /> A GA-90 Landtcc -red Gas Analyzer was used to monitor methane <br /> carbon.dioxide.(CO2), <br /> and oxygen(OD levels at each probe location eanalyzer was calibrated for methane, COs_,and <br /> Oz prior to use in the field-CAI ibration.togs are_included.in thisz-cport. <br /> Gas Monitoring - <br /> Ambient air m <br /> ants of mcibont, oxygen, carbon dioxide; and barometric-p -were <br /> taken at each gas probe logon. Those d' gs were recorded and-theinstrument: was <br /> co ncctcd to the probe- 'The valve was opened2nd grobe.gas pressure <br /> ineasurtments were taken <br /> The probe was then- purged fortwo probe vol es. . were than collected at <br /> ai*oximately 34- to60-second int ' ..a stable reading was .+nbtainecL. These <br /> m meats of me e, oxygen, n d"zoxida, and ambient barometric pr=ure were then <br /> recorded- Monitoring was also conducted at various locations in sites for thePresen = <br /> er of methane gas. Monitoring was conducted at the office trailer at the entrance to the <br /> landfffl, trailer boxes at the service shop, and trailer boxes at the transfer building. These <br /> locationsWCrC monitored for any gas pockets at the foundation and near any opening from the <br /> floor such as piping holes,electrical conduits,or Boor cracks, <br /> LYSD4ETERS <br /> Lysimcters were sampled using the following standard protocol: <br /> l- Prior to sampling lysimetcrs the pressure-vacuum equipment is checked-and cleaned. <br /> 844-F81t23!® A-12 <br /> j <br /> .&k J*14,200 <br />