Odor Control Updates
STATEMENT FROM SENIOR VICE PRESIDENT MATTHEW NEELY CONCERNING SULFUR DIOXIDE LEVELS AT SUNNY FARMS LANDFILL
Sunny Farms has completed extensive and sophisticated chemical, operational, meteorological and air dispersion analysis and modeling of sulfur dioxide emissions from the landfill. The modeling methodology used is widely recognized as state-of-the-art by the scientific and environmental regulatory communities and is approved by both the US EPA and Ohio EPA. Based on this analysis, Sunny Farms meets US EPA’s most stringent sulfur dioxide National Ambient Air Quality Standard, under present and prospective operating scenarios. Compliance with the air quality standard is highly protective of the most sensitive individuals.
In the meantime, it’s important to note that Sunny Farms continues to make substantial investments in new technology and processes, which have essentially eliminated any odor action level exceedances over the past two and a half months. Further, recent independent testing of soil and water confirmed that surface water quality meets or exceeds local, state and federal drinking water standards. Sunny Farms will continue to operate in a manner that protects residents and the environment.
Hydrogen sulfide treatment system expands
Sunny Farms Landfill’s hydrogen sulfide treatment system has been expanded. The original system used six vacuum treatment boxes filled with a material that removes hydrogen sulfide from landfill gas. Looking to future needs, Sunny Farms recently added four additional vacuum boxes, bringing the total to 10. All 10 boxes are now operating and collecting and removing hydrogen sulfide.
Visitors will notice that work has begun to add new siding to the rail transfer building. Additionally, Sunny Farms is adding 1,650 feet of new fencing along Township Road 108 and new LED lights are being installed at the rail crossing. These steps will improve the appearance of our landfill, reduce the chance of blowing litter and improve visibility at the rail crossing.
Grass is growing
To control erosion on the slopes, grass was planted last month to improve the landfill’s appearance. The slopes were prepared and planted with a specially developed mix of seed and fertilizer, and diversion berms were installed to control stormwater and keep seed from washing away in the rain. Now, the grass is growing and creating a lush green hillside.
Surface Emissions Monitoring
To ensure that the active landfill gas collection system is collecting landfill gas and odor, Sunny Farms conducts a thorough surface scan of the landfill surface looking for gas emissions.
At Sunny Farms, a special monitoring device called a photoionization detector is used to scan for methane at concentrations that are five times more sensitive than the normal regulatory limit for a landfill. The path taken to cover the entire surface of the landfill is nearly 13 miles long and involves hundreds of thousands of readings. The data collected with the electronic measuring device is reported to the OEPA weekly.
We are happy to report that the last scan completed on June 19 is the eighth consecutive weekly scan with no gas detections above the limit. This indicates that the significant work invested in 2019 to expand the landfill gas collections system to twenty-one vertical landfill gas wells (in addition to eleven perimeter landfill gas collectors) is working to control landfill gas and odor.
The following event will occur that could potentially cause the migration of odors beyond the landfill property line: Caisson-type gas extraction wells in active Cell 10 are being raised today and tomorrow to accommodate waste filling. If the work will extend beyond tomorrow, another notification will be sent.
The following event will occur that could potentially cause the migration of odors beyond the landfill property line: Work is being performed on the piping to two of the gas treatment boxes, which may cause intermittent interruptions in the operation of one of the landfill flares (Flare 1).
The following event will occur that could potentially cause the migration of odors beyond the landfill property line: Two caisson-type gas extraction wells in active Cell 10 are being raised today to accommodate waste filling. The work will be completed today barring unforeseen circumstances. Another notification will be sent if it is not.
The following event will occur that could potentially cause the migration of odors beyond the landfill property line: Two caisson-type gas extraction wells in active Cell 10 are being raised today to accommodate waste filling. The work is a continuation of the work begun yesterday.
UPDATE: The work described below has been completed for the day.
Three caisson-type gas extraction wells in active Cell 10 are being raised today to accommodate waste filling. Another notification will be sent when the work has been completed.
The work regarding the dripleg for the Cell 10 gas system was completed at approximately 8 p.m. Tuesday.
The final dripleg for the Cell 10 gas system will be installed today, requiring excavation into the soil cover and waste. The system has been in operation with the use of a temporary dripleg. The work will be performed as weather allows during the day and another notification will be sent when it has been completed.
Beginning now, piping upgrades are being made to the air compressor that serves the two landfill flares that will require the flares to be turned off for approximately one hour. If any difficulties are encountered that will require the work to extend beyond the hour, another notification will be sent with an update.
The drilling of landfill gas wells has resumed this afternoon to complete the wells for Cell Gas System installation. Three wells remain to be drilled and the drilling is anticipated to be completed Thursday. The previously utilized vacuum box will be utilized at each drilling location to minimize odors. Another notification will be sent when drilling is complete.
Additional landfill gas extraction well installation is planned for the next 2 to 3 days. We will provide additional updates as the project progresses. Some odors may be generated during the construction project as previously placed waste is disturbed to install three (3) new wells. A gas collection device is used during the drilling process, but some odor may escape the vacuum system. This possible short-term inconvenience will result in long term improvements for Sunny Farms.
This is to notify the public that the excavation of the anchor trench described in an earlier alert today was minimal and has been completed for the day.
During the course of the next few days, an odor control blanket (OCB) is being installed on the west and north slopes of the active landfill area south of Township Road 108, requiring the excavation of a shallow anchor trench to secure the OCB at its perimeter. The excavation into the soil cover may encounter landfill gas in some areas. Sunny Farms Landfill and its contractors will strive to minimize any excavation that may cause a release of odors and will update you periodically as the work progresses.
This alert is no longer active. The dripleg installation described below was completed on April 3, 2019, in the late afternoon and the soil cover was restored in the work area.
A condensate dripleg will be installed today for the Cell 10 gas collection system that is currently under construction and in partial operation. The dripleg installation will require the excavation of cover and waste in a relatively small area. The installation is anticipated to last most of the workday and another notification will be sent when it is complete and the area is re-covered.
This alert is no longer active. The temporary shutdown of the landfill flares described below ended at 10:15 a.m. today and that both flares were returned to full operation.
The following event is occurring that could potentially cause the migration of odors beyond the landfill property line:
Both landfill gas flares will be shut down temporarily to connect a transfer switch to allow connection of a backup power supply per Order #19 of the same DFFO’s. The shutdown is anticipated to last for approximately two hours and another notification will be sent when the flares have been returned to operation.
The temporary shutdown of the landfill flares described below ended at 10:15 a.m. today and that both flares were returned to full operation.