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Indian River County Public Works Department Proposed North County Regional Park June 15 , 2000 Based on the existing and proposed grades, several feet of fill will be placed in the building areas . In order to minimize any fill induced settlements, we recommend that all of the fill required to bring the slab areas to grade be placed and compacted prior to footing excavation. With the above criteria satisfied a soil bearing pressure of 2 ,500 pounds per square foot may be used in the design of the footings. BUILDING AND POOL AREA SITE PREPARATION RECOMMENDATIONS Building and Pool Areas Site Preparation and Earthwork The foundation areas should be cleared of all trees, roots, surface vegetation, and any other deleterious matter to 5 feet outside of the proposed structure and pool areas. After clearing, the areas should be graded to an even grade and then compacted with a self-propelled steel drum vibratory roller having a minimum total applied force of 10 tons. Sufficient compactive effort should be applied to obtain a minimum of 95 % density per ASTM D- 1557 for a depth of 2 feet . The vibratoryroller should make a minimum of 8 overlapping passes, 4 in one direction, and 4 in a direction at right angles over the entire cleared area. Soil density tests should be taken in the upper 2 feet prior to fill placement . If any unstable soil conditions or soft areas are encountered during compaction operations, the project engineer, geotechnical consultant or other responsible professional should be informed, the matter investigated and a resolution determined . Fill Placement Where fill is to be placed on the existing ground, the surface must first be prepared as outlined above . The outer edges of the fill should extend out a sufficient distance to allow for compacted fill extending for a minimum of 6 feet beyond the structure outline at final grades . Due to the likelihood of a high ground water table, the first 2 feet of fill should be a uniform free draining granular soil (clean sand containing less than 3 % material finer than the No . 200 sieve) and be placed in layers not to exceed 15 inches loose measure and compacted as outlined above . Provided a dry, stable surface is achieved, the remaining fill may contain up to 7% material finer than the No . 200 sieve . Sufficient compactive effort should be applied to obtain a minimum of 95 % density for all of the fill layers. Sufficient soil density tests should be taken to verify the density has been achieved . Footing Excavation Once the footings have been excavated, representative density tests should be taken. The density at 3 Fraser Engineering and Testing, Inc .