Opening of Bids - Privet Lane Culvert Replacement Project Proj No 118-013B - G. E. Marshall, Inc.

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Temporary Erosion Control LS SP-37. B-BORROW AND STRUCTURE BACKFILL A. State Specifications: Section 211 B. Additions: 1. This work is intended to address the structural fill required to backfill at the proposed structure, structure wingwalls and manholes. 2. Structure backfill material shall meet the requirements of 904.05, except flowable backfill shall only be used upon written request by the Contractor and expressed written permission by the Owner. 3. The subgrade and the granular soils shall be compacted via several passes of a vibratory compactor. Given the presence of an existing sanitary sewer and other below -grade utilities, use of a heavy vibratory compactor is prohibited due to the risk of damaging the utilities 4. Structural fill, defined as any fill which will support structural loads, shall be free of organic material, have a plasticity index of less than 25 percent, a maximum particle size of no more than 3 in., and a maximum dry density in excess of 100 pounds per cubic foot, as determined by the standard Proctor compaction test (ASTM D698)]. 5. Structural fill shall not be frost susceptible. The structural fill should be compacted to at least 98 percent of its maximum standard Proctor dry density (ASTM D698) under the foundations and roadways. 6. Structure backfill shall be measured from the top elevation of proposed compacted aggregate bases of the foundation excavation to the base elevation of proposed topsoil or to the base of compacted aggregate for full depth pavement locations. 7. Fill shall be placed and compacted in layers not exceeding 8 inches in loose lift thickness. 8. In -place density tests shall be performed and documented by the Contractor at a frequency of at least one test for every 2,500 square feet of fill area per each lift of compacted fill placed in the proposed construction areas to demonstrate compliance with the required density standards. 9. Payment will be made under: Pay Item Pay Unit Structure Backfill, Type 1 CYS SP-38. AGGREGATE PAVEMENT AND BASES A. State Specifications: Sections 301, 302 B. Additions: 1. This Pay Item includes the aggregate needed for full depth pavement base, as well as aggregate needed for the temporary runaround and structure subgrade shown on the Plans. 2. Aggregate used for the temporary runaround shall be removed once the proposed structure is in place along Privet Road and work has progressed to allow for safe vehicular access over the proposed mainline pavement section. 3. Payment will be made under: Pay Item Pay Unit Compacted Agg!r°e ate, No. 8 TON Version 7/01/2018 Special Provisions - 16