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Page 9 <br />A typical newer pavement section in used on residential streets in Arden Hills is: <br />• 12-inch sand base <br />• 8 to 12 inches of aggregate base <br />• 4 to 6 inches of bituminous pavement <br />Summary <br />Although vehicle types and loading contribute to the wear of the pavement section, <br />environmental factors also contribute to the deterioration of the pavement section. A properly <br />designed bituminous surface should be able to handle the traffic loading over its design life <br />including heavy truck loadings experienced in Arden Hills. Reducing the number of heavy truck <br />loadings should have positive effects on the lifespan and quality of local streets however, <br />environmental factors are generally responsible for the majority of paverent wear and <br />deterioration For Arden Hills streets and therefore significant extensions of pavement life are <br />unlikely. <br />