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retained on each sieve, which comprises at least 4 percent of the total sample shall be <br />tested.) <br />(d) All water used shall be potable. <br />4. Seal Coat Design <br />The quantity of bituminous material for seal coat solicited in the Bid Proposal is for <br />estimating and bidding purposes only. The contractor will design the seal coat using the <br />MNDOT seal coat design method, available through the MNDOT website. Provide the <br />following design information to the Engineer at the pre -construction meeting: <br />(1) Test results of aggregate. <br />(2) Seal coat aggregate design application rate. <br />(3) Bituminous material design application rate. <br />(4) Loose unit mass [weight] of the aggregate. <br />(5) Bulk specific gravity of the aggregate. <br />(6) 150 lb. sample of each proposed aggregate source. <br />Work shall not be authorized until the seal coat design has been approved by the Engineer. <br />After the seal coat design has been established, the aggregate supplied to the project shall <br />conform to the QC tolerances listed above. Note: The seal coat aggregate design rate is the <br />minimum amount of material based on the design program. If additional material is needed, <br />this material is incidental to the square yard bid price. <br />5. Schedule of Price Reduction for Seal Coat Aggregate <br />Failing gradations will result in a price reduction. The contract bid price for seal coat will be <br />reduced 1 percent for each 1 percent passing outside of the requirements for any sieve, except <br />the # 200 sieve which will have 1 percent price reduction for each 0.1 percent outside of the <br />specification. Failing the flakiness test will result in a 2% reduction. All failing results will <br />be added together. These deductions apply to the specification range. <br />6. Equipment <br />1. Distributor - Use a distributor as specified in MNDOT 2360.3.B2.d. <br />2. Aggregate Spreader - Use a self-propelled pneumatic -tired mechanical type aggregate <br />spreader capable of distributing the aggregate uniformly to the required width and at the <br />designed rate. <br />3. Pneumatic -Tired Rollers - Provide a minimum of three (3) self- propelled pneumatic -tired <br />rollers as specified in MNDOT 2360.3.B.2.e(2). <br />4. Brooms - Provide motorized brooms with a positive means of controlling vertical pressure <br />and capable of cleaning the road surface prior to spraying bituminous material and removing <br />loose aggregate after seal coating. <br />7. Construction <br />A. Weather Limitations — Sealcoating operations shall: <br />SCTS 2 <br />