Agmt08 American Asphalt Repair and Resurfacing Co., INC (2)

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If the result of the Sand Equivalent test for aggregate does not meet the requirement specified, the slurry seal represented by such test shall be removed. However, if requested in writing by the contractor and approved by the Engineer, the slurry seal may remain in place and the Contractor shall pay to the City $1.75 per ton for such aggregate left in place. When the results of both the aggregate grading and the Sand Equivalent test do not conform to the requirements specified, both payments to the City shall apply. City may deduct these amounts from any monies due, or that may become due, the Contractor under the contract. No single aggregate grading or sand equivalent test shall represent more than 300 tons or one day's production, whichever is smaller. E. Mix Desian. At least 7 working days before slurry seal placement commences, the Contractor shall submit to the Engineer for approval a laboratory report of tests and proposed mix design covering the specific materials to be used on the project. The percentage of asphaltic emulsion proposed in the mix design shall be within the percentage range specified in Section 3.04 of these Technical Specifications. The tests and mix design shall be performed by a laboratory deemed by the Engineer capable of performing the applicable American Society for Testing and Materials (ASTM), Caltrans and International Slurry Seal Association (lSSA) tests. The proposed slurry seal mixture shall conform to the requirements specified when tested in accordance with the following tests. PART 3 - EXECUTION 3.01 MIXING AND SPREADING EQUIPMENT A. Mixing and spreading equipment shall be in accordance with the State Specifications, Section 37-2.04 and 37-2.05, respectively, and as specified herein. B. The slurry seal spreading and mixing equipment shall be equipped with the following: 1. A burlap drag not shorter than 18 inches or longer than 24 inches in length. The drag shall be replaced when it loses its flexibility. 2. A calibrated emulsion tank with a stick gauge or other measuring device that allows for quick accurate measurement of the volume. 3. Gages or approved means of measurement shall be provided on the equipment so that the proportional rates of aggregate, water and asphalt emulsion can be checked at intervals determined by the Engineer. 3.02 CALI BRA TION/DEMONSlRA liON A. The Contractor shall calibrate the spreader vehicle(s) to be used on the project to the approved mix design prior to their arrival at the job site, and shall furnish the Engineer a copy of the calibration settings for each vehicle. Thereafter, no adjustments in the aggregate and emulsion settings shall be made without the approval of the Engineer. SLURRY SEAL 02540-3