Specifications include, but are not limited to: Cover Aggregate Preparation and Asphalt Surface Treatment Design: Sampling and submitting of the cover aggregate, in accordance with Section 6.3, is required for the asphalt surface treatment design process and quality testing. The Contractor shall notify the Area office a minimum of 5 calendar days prior to sampling the cover aggregate. After at least 50% of the aggregate is stockpiled at each stockpile site and a minimum of 14 calendar days prior to beginning the asphalt surface treatment, the Contractor must submit a sample of the cover aggregate to the asphalt supplier for evaluation of compatibility. The Area office representative or, in accordance with Section 6.3, the Contractor will submit a sample of the cover aggregate for quality test verification to the Department’s Bituminous Engineer. At the same time, the Contractor shall submit copies of the cover aggregate production samples including, but not limited to; gradation, flakiness index, plasticity index, LA abrasion loss, soundness loss, and crushed particles tests, to the Engineer and the Department’s Bituminous Engineer. Satisfactory quality test results for the cover aggregate must be obtained prior to use on the project. If a change in source of cover aggregate is necessary as a result of the compatibility verification, the asphalt surface treatment design, or quality testing; the Contractor must obtain a new sample of cover aggregate and the Area office representative or, in accordance with Section 6.3, the Contractor will submit the sample to the Department’s Bituminous Engineer using the same procedures as stated above. At least 7 calendar days prior to beginning the asphalt surface treatment, the Contractor must submit an emulsified asphalt sample, a copy of the compatibility test results, and the asphalt surface treatment design to the Engineer and the Department’s Bituminous Engineer for approval by the Department’s Bituminous Engineer.