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FML, Inc. STS Project 93589 August 28, 1985 -8- 1 loose soils, or that the soils in this loose surf icial zone be densified using proper mechanical compaction techniques to compact Ithe soils within the building pad areas. We strongly recommend that the buildinglocations be observe d and tested after the stripping operations by an experienced STS Tech- nician to determine areas which will require subgrade corrections. , 1 Bituminous roadways and parking areas should be proof -rolled to e e d tect,any area_Q of loose or soft soils. Any areas located by testing or proof -rolling should either be densified in place, or removed and replaced p ced using proper filling techniques, ues. Any fill materials used on this site should be non -organic and free of debris, similar to the on -site natural fine to medium sands encountered underlying the sandy topsoil. This fill should be placed in lifts not exceeding approximately 9 inches in loose thickness and compacted to at least 95% of the maximum density • obtained in accordance with ASTM specification D 1557, the Modified Proctor Method. This compaction specification should apply to all fill materials placed ced below driveways or parking areas and beneath foundations and floor slabs for structures. For roadways and parking areas, the zone of compacted fill should extend laterally beyond the curb line at least 1 ft for each verti- cal foot of fill material required below the pavement surface. For ' building foundations, the zone of compacted fill should extend laterally beyond the outside edge of buildings at least 5 ft plus 1 ft for each vertical foot of fill material required below footing level. t The site development plans call for earth berms surrounding the rear and sides of each structure. Fill soils used for t1.is berming surrounding the foundation walls should be non -organic granular soil placed in lifts and compacted tj at least 90% of the Modified Proctor dry density.