HomeMy WebLinkAboutAmendment to Prof. Services Agreement with Tetra Tech_7 Commission Memorandum
REPORT TO: Honorable Mayor and City Commission
FROM: Rick Hixson, City Engineer
Craig Woolard, Public Works Director
Dustin Johnson, Project Engineer SUBJECT: Amendment to Professional Services Agreement with Tetra Tech Inc. for
ongoing post-closure soil gas investigation at the Story Mill Landfill.
MEETING DATE: September 22, 2014
AGENDA ITEM TYPE: Consent
RECOMMENDATION: Authorize City Manager to sign.
BACKGROUND: The City of Bozeman is required by the Montana Department of Environmental Quality (DEQ) to monitor the environmental impacts of the Story Mill Landfill. Tetra Tech (previously Maxim Technologies) has been contracted with the City to serve as a
consultant since the mid-1990s. The nature of the contract has been to provide consulting
services to the City of Bozeman in the form of sampling, drafting technical reports to the DEQ,
and keeping the landfill in compliance with State and Federal regulations. In a previous task orders regarding the soil gas investigation Tetra Tech’s research found
volatile organic compounds (VOCs) in the soil in the residential area south of the landfill. Based
on these results city staff and Tetra Tech determined it was necessary to conduct indoor air
sampling on residences in the area of concern. From this indoor air sampling it was determined that sub-slab sampling would be necessary to better understand the migration of soil gas from the landfill. The results of all of these samples were used to decide to install soil gas mitigation
systems for those who requested them in the homes of Bridger Creek Phase III at no cost to the
homeowner.
As sampling events continued, large volumes of groundwater, soil vapor, and air data began to accumulate. In this process it became clear that a better way of organizing and
accessing the data was going to be necessary. Tetra Tech was asked to draft a work plan for a
database management system. After meeting with staff and discussing various options the
attached task order was drafted, and outlines the scope and costs for the database managing system.
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FISCAL EFFECTS: The total cost for database management system is $23,550. The
entire project will be funded through the Solid Waste Landfill
Closure/Post-Closure Fund. At this time the Closure/Post-Closure
Fund has $102,590.
ALTERNATIVES: As suggested by the City Commission.
Attachments: Task Order and estimated budget from Tetra Tech Inc.
Report compiled on: 9/10/14
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