3003 W CASINO RD 1992 SITE DEV 2018-01-01 MF Import

�DRA►FT As mentioned previously, we recommend that the surHcial 2 to 3 feet o(the weathered zone be reserved for use with a topsoil mix, or removed from the site. Alternati�ely, if the organics aze screencd from this zone, a�d if the soil is moisture conditioned, this soil will also be suitable for use as swcturai fill during the drier season. Strippinp end Ezcavation We recommend that all uec stumps, root balls, brush, grazs and significant vegetation be removed from the pavement azea. 'Ibe ezpected depth of stripping wi11 be variable across the site, ranging from a th[n layer of moss or grazs w a thick layer (2 W 3 feu) of forest duff and root zone. Stripped material should be removed from the site or used in iandscaping areas. Topsotl Reserve A portion of the weathered glacial till can be stripped and stockpiled for use as topsoil and planting soil. A mi�c design might be required to enhance this soil before it is suitable for topsoil. Subgrade Preparation and Fill Placement We recommend that a member of our staff visually evaluate ihe exposed subgrade after stripping is completed end prior to placing any fill. 7'he ezposed subgrade should be proofrolled with heavy rubber-tired conswccion equipment during dry weather. During wet weather, the suitability of the ezposed subgrades should be visually evaluated by a member of our staff. Any soft, lose or otherwise unsuitable azeas identified should be recompacted if practical, or removed and replaced with stcuctural fill. Where 12 inches or less of site grade fill will be placed over the ezposed subgrade within pavement areas, we recommend that the esposed subgrade soils be rolled with a smooth�rum vibratory roller such that at Icast 95 percent of the maximum dry density az established by the ASTM D-1557 test procedure is achieved. If the subgrade soil is too wet to respond to compaction and aeration is not possibie, we recommend that an additional 1 foot of the native soils be removed and replaced with swctural fill, or as recoaunEnded by our site representative. Some limited arcas of additional overezcavation may be necessary if the exposed soils become saturated. We recommend that fill in the pazling areas be placed and compacted as strucmral fiil. The fill should be placed in horizontalliRs not exceeding 10 inchcs in loose thic�ess. Each lift must be thoroughly and uniformly compacted to the recommended standazd. Structural fill piaced up to a depth of 2 feet below tlie pavemeot section should be compacted co 90 percent of the maxitr;um dry density. The upper 2 feet of pavement subgrade should be compacted to 95 percent of the maximum dry density. In areaz where buildings might be constructed in the future, we recommend the entire dep�h of fill be compacted to at least 95 percent of the maximum dry dentity. Swctural fill must be free of organics, debris and other deleterious material with no individual pazticles lazger than 5 inches in diameter. As the amount of fines (that portion pazsing G e o E n y i o e c r � $ Flc No.0120.15PRIO/06229I