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EXHIBIT C — LFG SYSTEM OPERATIONS SCOPE <br />7;; General <br />Ameresco will operate the LFG collection system in accordance with the APCD Permit and <br />other applicable regulations. <br />Well Field Adjustment <br />Ameresco will adjust the wells at least once each month. <br />Wells shall be adjusted for methane content greater than 38 percent, if possible using <br />Reasonable Industry Practice. If the methane content cannot be maintained above that level, <br />then Ameresco will reduce the vacuum applied to that well to the minimum vacuum <br />" measureable by the instruments used. <br />Subject to the previous paragraph, Ameresco will establish "deadband" adjustment criteria for <br />the LFG wells. The deadband range of methane concentration measured at the individual wells <br />will be used for individual well adjustments as follows: <br />1- If the methane concentration is greater than the deadband range, then Ameresco shall <br />increase applied vacuum by an amount chosen by Ameresco. <br />Z. If the methane concentration is less than the deadband range, then Ameresco shall <br />decrease applied vacuum by an amount chosen by Ameresco. <br />3. If the methane concentration is equal to the greatest or least deadband range <br />concentrations, or within the dead band concentration range, then Ameresco shall not <br />adjust the well. <br />Other adjustment criteria may be applied by Ameresco. <br />Ameresco will modify LFG well adjustment criteria at the request of County if such adjustments <br />are necessary to comply with applicable regulations or permit requirements Ameresco, may <br />propose alternate adjustment methods to County, the approval of which shall not be <br />unreasonably withheld. <br />Reporting <br />r Ameresco shall communicate the deadband criteria in writing, identifying the deadband <br />methane concentrations and corresponding adjustments to the County for its records. <br />Ameresco will submit to County monthly LFG field adjustment reports to allow County to comply <br />with regulatory reporting requirements. These reports will include: <br />1. At each well: Methane, carbon dioxide and oxygen content, temperature, and applied <br />F7 vacuum before and after adjustment- <br />LFG Purchase Agreement <br />Foothill Sanitary Landfill <br />Ameresco San Joaquin LLC/San Joaquin County <br />F7 SW -1013035-R6 <br />