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ITEM  40 City Council Memorandum      Public Works & Utilities  Memo No. UA25-026         Date: October 14, 2024 To: Mayor and Council Thru: Joshua H. Wright, City Manager Andy Bass, Deputy City Manager John Knudson, Public Works and Utilities Director From: Tabitha Sauer, Solid Waste Manager Subject: Agreement No. 4831, with Tetra Tech, Inc., for the Paseo Vista Recreation Area and Landfill Environmental Consulting Services

Proposed Motion:

Move City Council approve Agreement No. 4831, with Tetra Tech, Inc., for the Paseo Vista Recreation Area and Landfill Environmental Consulting Services, in an amount not to exceed $200,000, for a one-year period, November 1, 2024, through October 31, 2025, with the option of up to four one-year extensions.

Background/Discussion:

The Paseo Vista Recreation Area, located at 3850 South McQueen Road, is a 64-acre former landfill site. In 2005, the landfill was closed, and the site was redeveloped into a recreation area in 2009. The Post Closure Plan and regulatory permits approved by the Arizona Department of Environmental Quality (ADEQ) include requirements for regular environmental monitoring. Under this agreement, Tetra Tech, Inc., will continue to provide assistance with environmental monitoring, including data analysis and generating reports for submission. Tetra Tech, Inc., will also assist with maintenance and installation services of the landfill's systems upon request. The project scope of work consists of research, geotechnical investigation and monitoring, recertification, sampling and soil testing, and regulatory assistance.

Evaluation:

Engineering and Environmental Consultants, Inc., now Tetra Tech, Inc., performed consulting services under a previous agreement for the solid waste landfill health assessment project. Staff recommends approval of this agreement with Tetra Tech, Inc., based on qualifications and previous experience with the Paseo Vista Landfill.

Fiscal Impact

Account No. Fund Name Program Name Dollar Amount CIP Funded Y/N 625.3700.5219.4LFL.0.0 Solid Waste Operating N/A $200,000 N

Attachments Agreement - Tetra Tech

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