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Table 1. Existing City LFG Systems O&M Requirements. <br /> O&M Component O&M Activity Frequency <br /> Test pump operation and discharge by switching <br /> pump to "Hand"operation and observing the <br /> Condensate Drop Pump System liquid level indicator on the panel to verify proper Monthly <br /> operation. <br /> Pull and inspect pumps for damage/wear per <br /> Condensate Drop Pumps manufacturer's recommendation or when Quarterly <br /> suspected problem is encountered. <br /> Condensate Drop Telemetry Record pump on/off counts and run times. Monthly <br /> Panel <br /> Control and Monitoring (C&M) Inspect and exercise each valve. Quarterly <br /> Valves <br /> Isolation Valves Exercise each valve. Quarterly <br /> With a handheld sensor, collect LFG <br /> LFG Conveyance System concentrations, vacuum pressures,and flow data Monthly <br /> Monitoring at C&M Valves and blower facilities. Note valve <br /> positions on C&M Valves and dilution valves. <br /> With a handheld sensor, identify any probes with <br /> Probe Monitoring methane concentrations exceeding 5%. If Quarterly <br /> exceedances occur,investigate source and <br /> mitigate. <br /> With a handheld sensor, identify any locations <br /> with methane concentrations exceeding <br /> 500 parts per million. If exceedances occur <br /> Surface Monitoring around perimeter or on 41st St, investigate source Quarterly <br /> and mitigate. If exceedance occur on Riverfront <br /> Boulevard, notify Riverfront of exceedances so <br /> they can investigate source and mitigate. <br /> With a handheld sensor, identify any locations in <br /> and around neighboring buildings with methane <br /> Off Site Building Surface concentrations exceeding 100 parts per million. If Quarterly <br /> Monitoring exceedances occur in or around buildings, <br /> investigate source and mitigate. <br /> Assumptions <br /> • City personnel will collect the LFG Data monthly and additionally as needed or as <br /> requested by Herrera using a GEM5000 LFG Portable Analyzer. City personnel will collect <br /> LFG probe data quarterly. <br /> • LFG composition samples will be collected by Herrera from both the North and South <br /> Blower Facilities at up to four separate sampling events over the 60-month duration. This <br /> assumes four phases of development will get added to the LFG system during this <br /> duration. <br /> • LFG system modeling is not part of this scope of work. <br /> • Up to 24 hours of design modification assistance. Effort in excess of 24 hours will be <br /> processed through a change order. <br /> • City personnel will perform the surface air monitoring using their own device once per <br /> quarter along the eastern perimeter, riverside trail, Boulevard, and offsite structures. As a <br /> 4 <br />