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City of Ramsey Project B1705491 August 11, 2017 Page 7 C. Basis for Recommendations C.1. Design Details C.1.a. Traffic Loads Traffic counts for the streets were not available. Based on the residential zoning in the project areas, we anticipate they will experience approximately 50,000 equivalent single axle loads (ESALs) over a 20-year service life. C.1.b. Anticipated Grade Changes Based on the nature of construction, we anticipate grade changes will be minimal. C.1.c. Utility Depths Design utility depths were not available. We also assume storm sewer improvements will be less than 10 feet below grade. C.1.d. Precautions Regarding Changed Information We have attempted to describe our understanding of the proposed construction to the extent it was reported to us by others. Depending on the extent of available information, assumptions may have been made based on our experience with similar projects. If we have not correctly recorded or interpreted the project details, we should be notified. New or changed information could require additional evaluation, analyses and/or recommendations. C.2. Design and Construction Co.1.. ations C.2.a. Reuse of Pavement Materials Our borings encountered a bituminous layer averaging 3 to 4 inches thick, depending on the project area. The aggregate base was 5 to 5 1/2 inches thick, on average, and was underlain with sandy fill material in nearly all of our soil borings. In our opinion, full -depth reclamation (FDR) can be utilized in order to obtain materials for aggregate base on the projects, assuming the material can be stockpiled or processed on site, or hauled to an off - site location to be sorted and reused. A proper reclamation depth will likely vary be between 6 and 8 inches. It may be possible to increase this thickness locally depending on the conditions encountered and nature of the subbase materials. BRAUN !RICER' LC