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bituminous material incorporated into the <br />mixture (as determined by tank stickings, meter <br />readings or observation of batch weights) is <br />below the maximum asphalt content limit <br />previously specified. The normal 0.3 asphalt <br />content percentage point tolerance shall be <br />applied to the amount designated by the <br />Bituminous Engineer or his designee. <br />d) In the event that Type SS aggregate is supplied <br />for any portion of the mixture production and <br />the Marshall density at the recommended or <br />established asphalt content is in excess of 160 <br />pounds, the weight of mixture supplied will be <br />reduced by 15 percent for payment. (payment for <br />mixture shall be at 85 percent of the contracted <br />unit price.) <br />e) The requirements for mixture proportions shall <br />be in accordance with 2331.3E: except that the <br />Job-Mix Formula (J.M.F.) percentages and <br />permissible working range will be established <br />based on the composite aggregate gradation of <br />the approved trial mix sample. The working <br />range, for all aggregate types (C.S., S.S., <br />T.T., and/or combination thereof), will be <br />determined by applying plus and minus tolerances <br />to the J.M.F. The sieves and tolerances used in <br />establishing the working range shall be in <br />accordance with the following: <br />Sieve Size Tolerance (g) <br />3/8 inch +~ <br />No. 4 +~ <br />No. 10 +~ <br />No. 40 +~ <br />No. 200 +7 <br />The working range shall not exceed the gradation <br />limits previously established in section <br />2361.2A2 of this specification. <br />The job-mix formula, as originally established, <br />shall remain in effect until modified in <br />writing. Should a change in source of <br />aggregate(s) be made, or when unsa tisfactory <br />results or other conditions make it necessary, <br />the Engineer will establish a new formula based <br />on the test results from a new trial mix <br />submittal. <br />-5- <br />