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Page 1 of 2 DATE: July 20, 2020 TO: Honorable Mayor and City Council Members David Perrault, City Administrator FROM: Todd Blomstrom, Public Works Director/City Engineer SUBJECT: Environmental Investigation for Snelling Avenue North Budgeted Amount: Actual Amount: Funding Sources: $4,000,000 TBD PIR, City Utility Funds, Assessments (2020 – 2024 CIP with proposed round-a-bout) Council Should Consider The City Council direction is requested regarding the results of the environmental investigation for the Snelling Avenue North project. Background The City’s Capital Improvement Program includes potential roadway and utility improvements along Snelling Avenue North extending from County Road E to Highway 51. The City initiated a feasibility study for the project in late 2019. During the geotechnical investigation process for the feasibility study, the soil boring company reported “Apparent Hydrocarbon Odors” at 11 of the 15 soil boring locations. In response to this information, the City hired WSB to conduct an environmental investigation to assist with identification of potential contaminants within the project. The scope of work for the environmental investigation included a Phase I Environmental Site Assessment (ESA) and field investigation to evaluate the current subsurface soil, groundwater and soil vapor conditions along the project corridor. A copy of the Phase I ESA is provided in Attachment B. A copy of the Field Investigation Report is provided in Attachment C. Attachment A provides a figure summarizing the results of the field investigation and indicating locations where analytical test results exceeding Tier 1, Tier 2 and other state guidelines. Ryan Spencer with WSB is scheduled to participate in the work session on July 20 to further explain the testing results, state guidelines, and answer questions. Mr. Spencer can also discuss his AGENDA ITEM – 1D MEMORANDUM