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HomeMy WebLinkAbout5. C3 PSA Tetra Commission Memorandum REPORT TO: Honorable Mayor and City Commission FROM: Craig Woolard, Director of Public Works Richard Hixson, City Engineer SUBJECT: Amendment to Professional Services Agreement with Tetra Tech Inc. for installation of two additional groundwater monitoring wells and one round of sampling at the Story Mill Landfill. MEETING DATE: December 15, 2014 AGENDA ITEM TYPE: Consent RECOMMENDATION: Authorize City Manager to sign. BACKGROUND: The attached work plan was prepared by Tetra Tech on behalf of the City of Bozeman to address installation and sampling of two additional groundwater monitoring wells issues at the Bozeman Landfill (also known as the Story Mill landfill) as requested by the Montana Department of Environmental Quality (DEQ) in their letter dated August 13, 2014. The purpose of this groundwater investigation is to better understand the extent of impacted groundwater and its possible influence on volatile organic compound (VOC) concentrations in soil gas south and west of the unlined cell. The proposed cost for this task order is $29,835.00. Included in this task order are all costs for installation of 2 groundwater monitoring wells and one complete round of sampling, testing and reporting. The wells will be finished at grade and will remain available for future use. FISCAL EFFECTS: Because these tasks relate to the Landfill Remediation System, the City anticipates being able to reimburse these costs from the Landfill Project loan proceeds, once the loan closes. Until then the City's Landfill Post-Closure Fund will provide the cash for payments. ALTERNATIVES: As suggested by the City Commission. Attachments: Task Order from Tetra Tech Inc. (3 originals) Report compiled on: 12/4/14 14 16 17 18 19 20 21 22 23