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operations subject to the approval of the Engineer. All compaction equipment shall be in good <br /> working order and any worn or defective equipment shall be immediately replaced or repaired . <br /> 8 ) SOIL STABILITY AND COMPACTION CONTROL <br /> A) The Contractor shall arrange to have sufficient soil tests made by an independent testing <br /> laboratory selected by the Engineer to demonstrate conformance of his work with the stability and <br /> compaction levels required by these specifications , Compaction tests shall be taken at intervals <br /> listed herein or as deemed necessary by the Engineer. <br /> B) Any proposed alternative test methods to those specified herein must be proved by the Engineer <br /> prior to testing . At the request of the Engineer, the contractor shall provide such documentation <br /> of a proposed alternative test method as the Engineer may require to evaluate the method for <br /> approval . <br /> C) In no case shall the Contractor proceed with construction on compacted material until the tests <br /> prove satisfactory and approval is given by the Engineer. <br /> D) In general , at least one test for maximum dry density/optimum moisture content shall be <br /> performed on a representative sample of each inherently different material to be used for <br /> compacted backfill or embankment fill . For material of uniform composition and textural class , a <br /> minimum of one test per 200 cu , yd . of material shall be performed at the point of use . Tests for <br /> in - place density ( percent compaction) shall be taken at locations designated by the Engineer. <br /> SW-3-2 <br />