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Mr. Mark Castano April 6, 2022 <br />Keith Page 2 <br />Proposal for Geotechnical Study - Proposed Collins & 158th Street Park NV5 Proposal No. 22-0299REV1 <br />We understand the site will be redeveloped with a park comprising a small welcome building with <br />storage and restrooms, new asphalt paving and other hardscape, including multiple game courts, and <br />new landscaping. <br />PURPOSE <br />The purpose of NV5's services on this project will be to perform a subsurface exploration and <br />engineering analyses to provide recommendations for design and construction of the proposed <br />project. <br />PROPOSED SCOPE OF ENGINEERING SERVICES <br />1. We propose drilling two (2) borings to around 15 to 20 feet below grade at the site. Proposed <br />boring locations are shown with red circles in the image below. Boring locations could shift <br />due to actual site conditions. Further, we note that the site is surface comprises brick pavers. <br />We will attempt to drill in landscaped areas to avoid damaging the pavers. However, this might <br />not be possible and a few pavers could be damaged. <br />The borings will be drilled utilizing the rotary wash method with a truck -mounted drill rig. <br />Samples of the subsurface materials encountered will be collected continuously down to 10 <br />feet below ground surface. Below that depth the sampling will be performed at roughly 5 -foot <br />intervals. Sampling will be performed using a Standard Penetration Test (SPT) sampler per <br />ASTM D-1586. Upon completion of the borings, the boreholes will be grouted to the ground <br />surface. <br />2. In addition to the borings, we propose performing one (1) field permeability test to provide <br />information for drainage design at the site. The test will be performed to 15 feet below the <br />existing grade in general accordance with the South Florida Water Management District's <br />Usual Open Hole Procedure. Upon completion of the test, the borehole will be abandoned with <br />grout to the ground surface. The test location can be coordinated with the project civil engineer <br />as appropriate. <br />3. For performing the fieldwork, NV5 will contact Sunshine One Call for advice about the location <br />of underground utilities. Additionally, we require that any other available information regarding <br />N V15 <br />CONSTRUCTION QUALI fY ASSURANGE INFRASTRUCTURE - ENERGY PROGRAiVI iMANAGEMEN 1 - ENVIRONMEMAI- 130 <br />