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density acceptable at any location along the traveled roadway shall be ninety -eight (98) percent of such maximum density. The minimum percent of carbonates of calcium and magnesium in the Limerock Material will be fifty (50). After spreading of the first lift is completed, the entire surface shall be scarified and shaped so as to produce the required grade and cross section after compaction. Prior to placing the second lift, the first course shall be cleaned of all foreign material and blade and brought to a surface cross section approximately parallel to that of the proposed finished base. Prior to spreading of any material for the upper course, the density tests for the lower course shall be made and the Engineer shall have determined that the required compaction has been obtained. After the spreading of the material for the second course is completed, its surface shall be finished and shaped so as to produce the designed grade and cross section after compaction, and free of scabs and lamination. a. At the option of the Engineer, unless the use of forms is specifically called for in the Plans, the base may be constructed six (6) inches wider in lieu of using forms. These extra widths will not be measured for payment and shall be provided at no additional expense to the City. b. Upon the Engineer's approval of the Limerock Base, it shall be primed with a prime coat having a minimum curing period of forty eight (48)- hours. c. Under no circumstances will the Engineer allow the prepared base to remain un- surfaced pending completion of other Work remaining on the Project. 1 d. The quantity of Limerock Base, determined as provided in this Section, shall be paid for at the Contract Unit Price Bid as indicated in the Bid Form of the Proposal. Such price and payment shall be full compensation for all the work specified for the complete construction of the base course as specified herein, including the necessary preparation and compaction of the sub - grade, correcting all defective surfaces of the sub -grade and/or deficient thickness and priming of the base course. Note: The areas of base course to be measured for payment shall include the areas of extra base required at various intersections. The cost of replacing base materials removed only for the construction of underground items shall be included in the Bid Price for the various items. 26. Prime and Tack Coats for Base Courses (Section 300) Section 300 -7.1 - GENERAL: This article is expanded to include the following: A Prime Coat is required for all Limerock Base Construction and the cost will be included in the Unit Price Bid for Limerock Base per cubic yard as noted in the Bid Form of the Proposal. No separate payment shall be made for the Prime Coat or its application. 27. Bituminous Material- Payment Adiustment (Item 300 -1 -999) Section 9 -2.1 - ITEMS INCLUDED IN PAYMENT: This sub - article is expanded as follows: The bid unit price for bituminous materials (asphalt concrete, prime and tack coat) will be adjusted to reflect changes, both increase and decrease, in the asphalt price index, based on the average of the current bituminous materials prices at Port Everglades, from that in effect during the month in which ISpecial Provisions 09/24 Page 9 of 16