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SECTION 4.0 BITUMINOUS TRAIL MAINTENANCE PRACTICES <br />4.01 There are several different categories of bituminous trail maintenance techniques, summarized <br />as: <br />- Crack sealing <br />- Slurry -sealing <br />- Pavement Rejuvenation <br />- Patching <br />- Overlay <br />- Reconstruction <br />4.02 Each of these pavement maintenance practices have been employed for Ramsey's trails — with <br />1.5" overlays generally determined to be the most cost effective and frequent annual <br />maintenance activity, with patching occurring in isolated locations as needed each year. The <br />table below from ACI Asphalt & Concrete of Maple Grove, MN provides a typical life cycle for <br />bituminous trail maintenance (aciasphalt.com). <br />'Asphalt trail pavements, like most <br />infrastructure, has a life cycle. They start <br />out new, they age, and eventually they <br />decline to the point where they need to be <br />replaced. How long pavement lasts <br />depends on a variety of factors, including <br />how well they are constructed initially, <br />the weather, shade and standing water, <br />the amount of use and — most <br />importantly — how well they are <br />maintained. A well -constructed trail can <br />last 20 years or more'. <br />A trail overlay at Ramsey's Trail <br />Maintenance Policy goal of generally <br />around the 15-20-year interval may <br />extend the useful life of the trail to 40 <br />years or more before needing a complete <br />reconstruct. <br />Excellent <br />Very Good <br />Good <br />Poor <br />Failed <br />Stage 1 Stage <br />Stage 1: New Pavement (0-1 Years) <br />• Little or no maintenance required, sealcoating, crack <br />sealing <br />Stage 2: Initial Preventive Maintenance Phase <br />(2-5 Years) <br />Typical maintenance procedures: <br />+ Sealcoating, crack sealing, patching <br />Stage 3: Minor Repairs and Continued <br />Preventive Maintenance (5-15 Years) <br />Typical maintenance procedures: <br />• Patch repairs, crack sealing, sealcoating <br />Stage 4: Major Repairs (1 — 0 Years) <br />Typical maintenance procedures: <br />• Extensive patching repairs, asphalt overlay <br />Stage 5: Extensive Repairs or Complete <br />Reconstruction (20-30 Years) <br />Typical maintenance procedures: <br />• Major repairs throughout the property or complete removal <br />and replacement of the asphalt <br />Stage 3 Stage 4 Stage <br />4 <br />