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P a g e | 12 A P P E N D I X B <br /> The City has design standards built into <br />existing city standards and specifications <br />similar to those developed by the National <br />Park Service or American Trails. Staff should <br />ensure that these standards are required of all <br />contractors and include at a minimum: <br />o Trail tread widths are designed for 36 <br />inches minimum and are widened only to <br />mitigate conditions affecting accessibility. <br />o Linear trail grades are kept moderate <br />between 5 and 8%. <br />o Layout of trail minimizes side hill <br />construction to provide a fuller native trail <br />bench for better durability, drainage and <br />sustainability. <br />o Trail structures such as retaining walls and <br />bridges are kept to a minimum and are <br />used to protect resources and maintain <br />good linear grades. <br />o Edge protection is provided only when <br />conditions warrant it. Native vegetation <br />and natural features such as rocks and logs <br />can serve as edge protection. Further, <br />edge protection is installed in a manor to <br />facilitate sheet flow. <br />o Trail surfaces need to be firm, stable and <br />have a good coefficient of friction. <br /> <br />Ball Courts <br /> <br />Existing Conditions <br /> <br />Numerous ball courts were visited during the maintenance tour including tennis and basketball. Tennis <br />courts were found to be in excellent condition with fencing, surface, nets, and lining all in a well <br />maintained condition. Courts at the Tennis Center had recently been resurfaced. <br /> <br />For the basketball courts, the surrounding grounds and netting was generally in a state of good repair <br />but the surfaces of most basketball courts showed numerous cracks and deterioration in the playing <br />surfaces. This cracking was almost universal throughout the park system and indicated failure of a <br />product rather than lack of maintenance. Cracks permit moisture to seep beneath the surface coating <br />and accelerate deterioration of the surface resulting in increased repair costs. Current published <br />operating budget information stated that the courts were recently resurfaced. <br /> <br />Staff from Operations Services claims that the problem with the basketball courts is not a problem with <br />the resurfacing but rather a problem with the below surface, as “most of Pleasanton is on a clay base” <br />with a “greater tendency to shift causing surface separation.” They claim that the only way to deal with <br />this issue is to remove the top 15 feet of soil, compact that level, and then fill again with compacted soil. <br />Meadowlark Park