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TASK 3 - LIQUID LEVEL MONITORING AND REPORTING <br />SCS -FS will measure liquid levels in each of the vertical extraction wells every six -months. Liquid <br />temperatures will be recorded in wells containing pumps. SCS -FS will submit the collected data in <br />the Republic formatted liquid level table in the monthly 0&M report that coincides with each <br />completed round of measurements. SCS -FS will also provide a list of wells that may require pumps <br />based on historical field measurement data. <br />TASK 4 - SEMI-ANNUAL PUMP MAINTENANCE <br />SCS -FS will remove each of the 34 pneumatic pumps located in condensate sumps and LFG vertical <br />extraction wells (a 13 -pump increase from 2020) to check operation of the pumps and identify <br />corroded or faulty components that need to be replaced every six -months. SCS -FS will provide <br />Republic with a summary of findings along with a recommended parts list based on our findings. <br />SCS -FS will make efforts to coordinate purchasing pumps or replacement parts in advance of each <br />scheduled preventative maintenance cycle so parts can be replaced during routine inspections. <br />TASK 5 - QUARTERLY CONDENSATE SUMP PUMP MAINTENANCE <br />SCS -FS recommends that the pumps located in the five condensate sumps be serviced at a quarterly <br />frequency. Due to the corrosive nature of landfill gas condensate and the important function of the <br />condensate sumps to keep the collection system fully operation, removing the pumps once each <br />quarter will allow for components prone to failure due to corrosion to be identified and replaced <br />before the pump fails. <br />TASK 6 - FLARE STATION BLOWER LUBRICATION/CHECK VALVE <br />INSPECTION/FLOW STRAIGHTENER INSPECTION <br />In addition to the manufacturers recommended maintenance the following items will be performed <br />twice per year: <br />o Removal and inspection of bearings and housing following alternative greasing plan. <br />Replacement grease will be added as needed; <br />o Blower Outlet check valve inspection and cleaning; <br />o Flow Straightener inspection. <br />TASK 7 - AIR COMPRESSOR PREVENTATIVE MAINTENANCE <br />Once per quarter, SCS -FS and a qualified air compressor service company will perform minor and <br />major services on the three air compressors and two air dryers located at the flare station based on <br />manufacturer's recommendations. The first quarter of 2021 is covered under the existing service <br />agreement with Air Compressor Works that was submitted in 2020. This proposal covers <br />maintenance for the second, third and fourth quarter of 2021 to coincide with the calendar year. <br />The services will be performed by Comp -Air Service Co. Additional information on air compressor <br />maintenance is referenced in Appendix B. <br />Indian River Landfill O&M Proposal Page 4 www.scsengineers <br />