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Johnson County, Kansas Environmental Department Protecting You and Your Environment |
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March Update on Recent Activities at APAC-Reno
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Week ending March 3, 2006The landfill gas collection and treatment piping system has been installed. H2S odors noticed along 167th street due to the piping excavation have dissipated. The blower for the gas collection system and the burner installation is being scheduled for installation 3/9/06. The contact water collection and treatment continue with the west and south seeps flowing at 15 gpm each into the lower east pond. The color of the contact water from the south landfill area has been improving. Treatment in the lower east pond continues with sodium hydroxide and treatment in the seeps with hydrogen peroxide. APAC and their consultant are considering connecting a sediment filter and holding tank to the pipes moving the seep water to the ponds. This would allow more time for the oxygen to be released into the water from the hydrogen peroxide to take place prior to entering the lower pond. This could help reduce or eliminate the need for sodium hydroxide in the lower pond but monitoring will be done for water quality and hydrogen peroxide will be added as needed. The upper northwest pond will have a biological treatment system installed during March. APAC and the their consultant continue to work with the KDHE-Bureau of Water on water quality parameters related to a new water discharge permit for discharging treated contact water. The air monitoring program continues to show very low to no detections of H2S gas at the perimeter and the source area. The last round of air sampling of perimeter monitors showed 0 ppb at all five meters. The telemetry equipment for the alarm system of the three source meters inside the landfill is expected to be installed on 3/7/06. Week ending March 11, 2006The contact water treatment shows no changes with the two seep flows at 15 gpm (gallons per minute) into the lower east pond with the same treatment as needed. The landfill gas collection and treatment system is nearly complete with testing of the blower system to verify landfill gas delivery and to adjust gas delivery mechanism to the burner. It is expected, the unit will be up and running next week and will also have the housing unit over the blower installed to reduce noise. The air monitoring system installation is completed except for final installation of the telemetry system and hook up of the alarm system which is expected to be completed soon. Week ending March 18, 2006The landfill gas collection and treatment system began operation on Monday, 3/13/06. The landfill gas (methane and hydrogen sulfide) is being collected and pumped to a hot oil heat transfer burner supporting the asphalt plant. The landfill gas is being used as the sole fuel for this burner and the system is working well. APAC-Reno personnel are operating the system and have been monitoring individual gas wells to optimize the system performance. No noticeable odors have occurred this week during system operation. The 5 hp blower unit for the gas collection system was measured for a noise level and found to be at about 80 decibels. APAC will be installing housing over the blower unit as agreed upon. The contact water collection and treatment continues with the west and south seeps continuing to flow at 15 gallons per minute each. Work on a revised water discharge permit for contact water discharge continues between APAC-Reno and the Kansas Department of Health and Environment - Bureau of Water. The air monitoring for hydrogen sulfide gas continues with downloading data from the perimeter air monitors by Environmental Department staff. Log data shows only one odor reading of 10 parts per billion for the week on the southeast meter. The interior source meters for the air monitoring telemetry system are on line for two units with the third monitor to be on line within a few weeks.
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