883Mineral Filler B.Referenced Documents GDT 91 GDT 43 427.1.03 Submittals A.Slurry Seal Design At least two weeks before beginning the work, submit to the Office of Materials and Research (OMR) desig n s amples of each ingredient to be used in the slurry seal mix. Include in the samples information concerning sources, type of materials, and project number. Do not begin slurry seal work until the OMR has approved the sl urry mix design. Submit the slurry seal mix design that will be used on the Project to the Engineer. B.Equipment Calibration Before placing slurry seal, furnish the Engineer with a calibration of the slurry mixing equipment. 427.2 Materials Ensure that the materials to be used meet the following specifications: A.Aggregate Ensure that the aggregate used in emulsified asphalt slurry seal meets the requirements of Subsection 802.2.01. Except, use aggregate manufactured from Group II, Class A or B crushed stone or slag with a sand equival ent v alue of at least 50. Ensure that the aggregates shipped to the project are uniform and do not require blending or premixing at the s torage area before use. 474 474 474 474 474 474 474