Site work and paving for a mixed-use development in Pocahontas, Arkansas. Completed plans call for site work for a transportation facility; for paving for a transportation facility; and water / sewer project.

Pocahontas Municipal Airport Improvements 1.5" asphalt milling, asphalt crack repair, 2" asphalt overlay, and grading/drainage construction at the Pocahontas Municipal Airport. Question Deadline 04/10/2025 Executive Summary This a report of the findings of the Geotechnical Investigation for the M70 Runway Rehabilitation and RSA Improvements project in Pocahontas, Arkansas. This report includes detailed information on subsurface conditions and existing surface materials in addition to providing recommendations for site development and pavement design criteria. The significant findings listed below should not be used separately from the further discussion provided in the body of this report. o MCE conducted a Geotechnical Investigation consisting of 10 project borings. o Surface materials consisted of asphalt pavement materials. These materials were encountered in all of the project borings, with thicknesses ranging from 3.5 to inches. Project borings B-01, B-02, and B-09 encountered and aggregate base course underlying the asphalt, with thicknesses ranging from five (5) to six (6) inches. o The materials that make up Stratum II consist of Silty Sand (SM), Silty Sand with Gravel (SM), and Clayey Sand (SC). o The materials that make up Stratum II consist of Sandy Lean Clay (CL). o MCE recommends that the Contractor budgets for a minimum of 12 inches of initial stripping to be necessary within the existing taxiway and RSA in order to fully remove the pavement section full-depth. o It is recommended that the project allow for the placement of a minimum of two (2) feet of imported select fill material meeting a CBR of six (6) or greater will be sufficient to stabilize the taxiway subgrade dimensions. o It is recommended that the project carry a budget for up to four (4) feet of material to be placed in the event of any "unstable" subgrade conditions to exist. o For preliminary budgeting purposes, it is recommended that the Project Team consider a section consisting of (starting from the in-situ subgrade materials): one (1) layer of Tensar NX850 Geogrid (or approved alternate), followed by the placement of 16 inches of aggregate base course. o This Geogrid and Aggregate section can be utilized as part of the design pavement section and can utilize a CBR of eight (8) or greater. o Further coordination with the Geotechnical Engineer should be conducted if this plan of action is to take place before construction.