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Sampling Equipment <br /> Interim gas sampling probes were used to monitor su cegases at the landfill <br /> perimeter. <br /> Each, probe consists of a S-fdot long, Winch diameter stainless steel pipe, with '/._ittciz holes <br /> staggend every 2 inches at the bottom 1 g inches to allow for gases'to migrate into the probes. A <br /> pointed tip was welded to the end of the probe for better penetration. <br /> A ball valve and brass fitting were instaUed at the top of each probe to contain gas pressures and <br /> facilitate instrument hook-up to the probe-The ves were left closed cxc t during urrtrg monitoring <br /> or instr=ent reading. Each probe is tagged ' ' a brass plate and identified as "GP-I" through <br /> A GA-90 Landtec Infra-red•Cras Analyzes was used to monitor methane, carbon.dioxide.(COQ, <br /> and oxygen(07)levels at each probe location.The analyzer was calibrated for methane„COs,and <br /> 07 prior to use in the field_C:aiibration.logs are.included.in d is report. <br /> Gas Monitoring <br /> Ambien-r-air measur=,mts of methane, oxygen. carbon dioxide; and baromet;ic•pressure•were <br /> taken at each gas probe Iocation. ?host dings were recorded and-the instmYncnt- was <br /> connected to the probe_ 'The valve was opened and probe-gas pressurt <br /> measurements were taken- <br /> The <br /> The probe was then. ed for. two. probe volumes. .R_ -were then collected at <br /> 7ci mately 30- to 60-second int ..a stable reading was .obtained-, These <br /> Measurements of rnetM IC, oxygen, carbon diwddd,and ambient barometric presm=were then - <br /> rccorded_ Monitoringwas also conducted at various locations in thrtc building sites for the <br /> presence of Methane gas. Monitoring was conducted at the office trailer at the entrance to the <br /> landfill, trailer boxes- at the service shop, •er b6ces at the transfer building. These <br /> locations were monitored for any gas pockets at the foundation and near any opining from the <br /> floor such as piping holes,electrical conduits,or foor cracks, <br /> LYSWETERS <br /> Lysime'te'rs were sampled using the following sta6dard protocol: <br /> 1. Prior to sampling lysimeters,the pressure-vatumn cquipment is checked.'and cleaned. <br /> &49--FQt�231QR3?3 A•12 '-.._ <br /> J*14,200(? <br /> 2M rithoewer.toe, <br /> j <br />