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Page 2 of 2 <br />SAN LEANDRO AMENDMENT 2 <br />MODIFIED SCOPE <br />BioGas to RNG <br />Provide and install necessary plant infrastructure to allow for increased production of Renewable Natural Gas <br />from the current facility biogas supply of 100 cfm to now, 200 cfm. <br />NEW SCOPE <br />To support the modified scope: <br />Ferric Chloride System <br />o Provide and install necessary plant infrastructure to store and inject ferric chloride chemical. Scope <br />of Work includes: <br />Provide and Install one (1) 6,650 gallon ferric chloride double walled polyethylene tank <br />Provide and install concrete equipment pad for the chemical tank <br />Provide and install one (1) ferric chloride metering pump <br />Provide and install required chemical injection piping <br />Electrical conductors and required panels/connections <br />Scope Assumptions: <br />o The tank and metering pump will be located directly north of the grit handling facility <br />o Chemical injection point will be in the grit handling structure <br />o Existing electrical conduit from the grit handling structure to the electrical building will be utilized <br />for required wiring <br />o All required containment redundancy will occur with a double walled tank vessel. <br />DocuSign Envelope ID: C8B3A923-973B-4EB1-8307-9EF813E8242F