Herrera Environmental Consultants Inc. 8/27/2022

Table 2. Site LFG Systems O&M Requirements. O&M Component O&M Activity Frequency Test pump operation and discharge by switching pump to"Hand"operation and observing the Condensate Drop Pump System liquid level indicator on the panel to verify proper Monthly operation. Pull and inspect pumps for damage/wear per Condensate Drop Pumps manufacturer's recommendation or when Quarterly suspected problem is encountered. Condensate Drop Telemetry Record pump on/off counts and run times. Monthly Panel C&M Valves Inspect Valves. Inspect and exercise each valve. Quarterly Isolation Valves Exercise each valve. Quarterly With a handheld sensor,collect LFG LFG Conveyance System concentrations,vacuum pressures, and flow data Monthly Monitoring at C&M Valves. Note valve positions on C&M Valves. Herrera may also design modifications to the Site LFG System that are needed to ensure proper operation of the City's system components. Herrera will provide site visits, as requested, for related system observation, sampling, and monitoring. Herrera will provide technical oversight as needed and requested by the City. Assumptions • Site O&M activities detailed in Table 2 will be performed by the City and Herrera and will begin when the Site system is online which is anticipated for July of 2023. • The City will collect the LFG Data monthly and additionally as needed using a GEM5000 LEG Portable Analyzer. • The LFG data from the Site will be saved with the data from Task 2.0. Monthly, Quarterly, and Annual Summary Reports of all Task 2.0 and 3.0 data will be prepared as part of Task 2.0. • Up to 24 hours of design modification assistance. Effort in excess of 24 hours will be processed through a change order. • Design modification memorandums as required. • No maintenance/repair services for the City are included under this contract. Deliverables Field inspection reports. 6