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L <br /> @; <br /> L <br /> accepted Bid Documents. All material that is brought in from other sources for <br /> backfill shall be at the price set forth in the Contract. <br /> 3 . Excavated material to be used for backfill shall be neatly deposited at the sides <br /> of the trenches where space is available to protect against caving or sloughing into <br /> the trench. Where stockpiling of excavated material is required, the Contractor <br /> shall coordinate the site location with the Engineer and shall maintain his <br /> operations to provide for natural drainage and not present an unsightly appearance. <br /> No excavated material shall be placed on private property without the consent of the <br /> property owner. <br /> D. Compaction Methods <br /> 1 . Mechanical compaction shall be accomplished using pneumatic or gasoline-powered <br /> tampers or flat-plate vibrators. Self propelled rollers may be used with the exception <br /> that the first two feet of backfilling over the pipe shall be compacted by hand- <br /> operated tamping devices. <br /> 2. Flooding or puddling with water to consolidate backfill is not acceptable, except <br /> where sand is encountered below unpaved areas only, and only with prior approval <br /> by the Engineer. The flooding or puddling operation shall be repeated with each <br /> two feet of backfill placed. <br /> it <br /> E. Density Tests <br /> 1 . The Contractor shall arrange to have sufficient soil tests made by an independent <br /> testing laboratory selected by the Engineer to demonstrate conformance of his <br /> work with the stability and compaction levels required by these specifications. <br /> Compaction tests shall be taken at intervals listed herein or as deemed necessary <br /> by the Engineer. All test results shall be signed and sealed by a Florida <br /> Registered Engineer, and a copy provided to the Owner and Engineer. <br /> 2. Any proposed alternative test methods to those specified herein must be approved <br /> by the Engineer prior to testing. At the request of the Engineer, the Contractor <br /> shall provide such documentation of a proposed alternative test method as <br /> the Engineer may require to evaluate the method for approval. <br /> 3 . In no case shall the Contractor proceed with construction on compacted <br /> material until the tests prove satisfactory and approval is given by the <br /> Engineer. <br /> 4 . In general, at least one test for maximum dry density/optimum moisture content <br /> shall be performed on representative samples of each inherently different material <br /> to be used for compacted backfill or embankment fill. For material of uniform <br /> composition and textural class, a minimum of two test locations per <br /> to mainline run between manholes shall be performed. <br /> 5 . As a minimum, in-place density tests shall be performed at the following rates <br /> on the compacted backfill, and shall be taken in one foot intervals beginning <br /> at one foot above the pipe and ending at the final grade. Test locations shall be <br /> as directed by the Engineer or his authorized representative. For material of <br /> uniform composition and textural class, a minimum of one test location per <br /> it <br /> 02530 - Gravity Sanitary Sewer Piping <br /> 02530- 7 <br /> it <br />