When the Department classifies Material to be incorporated in the Work according to size, strength, type, or other design classification for separate units, courses, sections, or installations, the intent is to specify the acceptable level of compliance, quality, or service. The Contractor may provide Material exceeding the specified class, quality, service life, or other Contract requirements to facilitate the Work. The Contractor may use substitutions only as approved by the Engineer, at no additional cost to the Department. The Engineer will approve the substitution and establish the revised basis for acceptance in writing.
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