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CONSENT ITEM — 8F ,-ARZEN HILLS MEMORANDUM DATE: October 23, 2023 TO: Honorable Mayor and City Councilmembers Dave Perrault, City Administrator FROM: David Swearingen, P.E. Public Works Director / City Engineer SUBJECT: Hazelnut Parking Lot - Geophysical Subsurface Investigation Budgeted Amount: Actual Amount: Funding Source: $300,000 $TBD PIR - Parks Fund Council Should Consider Motions to approve, table, or deny the following: • Proposed geophysical subsurface investigation services with Olson Engineering at Hazelnut Park Parking Lot in the amount of $12,852. Background/Discussion The City of Arden Hills utilizes the parking lot at 3245 New Brighton Rd via Joint Use Agreement with the Church dated August 8, 2011. The current condition of the parking lot is beyond its useful life and is in need of pavement rehabilitation. The City has had ongoing conversations with the Church representatives over the past several years in attempt to plan for the project. When planning for pavement projects it is necessary to order geotechnical services to assist in estimated construction costs. The City had ordered soil borings in 2019 at 2 locations at the parking lot to examine the existing pavement section and determine the recommended pavement section to be constructed. Recently, City staff had learned of the possibility of "ground rubber tire fill" layer used during the last reconstruction of the parking lot. This layer was not identified through the soil borings. The City and the Church decided it was important to investigate the possible tire layer further before moving forward with the project. City staff has reached out to Olson Engineering, a firm that has specialized equipment that identifies subsurface material properties via ground penetrating radar. The geophysical subsurface investigation will provide valuable information necessary in determining the actual Page 1 of 2