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City of Arden Hills <br />2028 Pavement Management Project <br />Proposal QTB221496 <br />September4, 2025 <br />Figure 2 in our soil borings section shows the proposed pavement coring locations. <br />Soil Borings <br />We propose to drill standard penetration test (SPT) borings for the project to nominal depths of 15 feet <br />below existing grade surface. We will perform standard penetration tests at 2 1/2-foot vertical intervals to a <br />depth of about 15 feet (boring termination). If soft, loose or organic soils are encountered at boring <br />termination depth, we will perform sampling at 5-foot intervals beyond 15 feet to understand extents for <br />utility replacement. <br />Figure 2 below shows an illustration of our proposed boring locations (along with associated pavement <br />coring and GPR). <br />Figure 2. Proposed Boring / Pavement Core / GPR Locations <br />Figure annotated in and extracted from Google Earth'" <br />If the intended boring depths do not extend through unsuitable material, we will extend the borings at least 5 <br />feet into suitable material at greater depths. The additional information will help evaluate such issues as <br />excavation depth, among others. If we identify a need for deeper (or additional) borings, we will contact you <br />prior to increasing our total estimated drilled footage and submit a Change Order summarizing the <br />anticipated additional effort and the associated cost, for your review and authorization. <br />If the borings encounter groundwater during or immediately after drilling of each boring, we will record the <br />observed depth on the boring logs. We will not leave any of the boreholes open for an extended period of <br />time. <br />Braun Intertec Page 4 <br />