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<br />6.1E <br />Page 3 <br /> <br />Cost: <br />. The initial cost of the black-color aggregate is almost double the cost of the gray- <br />color aggregate. This results in roughly a 10% increase in the overall project <br />construction cost. For example, a typical slurry seal project costing $400,000 <br />with gray aggregate would cost roughly $440,000, if the black aggregate were <br />specified - <br /> <br />In consideration of all of the points stated above, staff would like to recommend that the <br />City continue to specify the use of black color aggregate for future slurry seal projects <br />despite the somewhat higher initial cost. Staff believes that the black-color aggregate <br />produces a higher quality slurry seal, and is more aesthetically pleasing. <br /> <br />Alternatives <br />Bid future slurry seal projects with alternative bid items for both the gray-color and <br />black-color aggregate, and make a determination on which to use knowing the actual <br />cost difference. <br /> <br />A copy of the Contract Documents for the 2005-2006 Slurry Seal Project, are available <br />for review in office of the City Engineer. <br /> <br />Fiscal Impacts <br />Funds in the amount of $1,000,000 have been budgeted in the FY 2005-2006 Capital <br />Improvement Project program for annual roadway maintenance and reconstruction <br />projects. <br /> <br />.4/4' /~//¿7 A - ~ () ~¡/ j) ~ <br />'l ø~ ~ <--'~ ~ P(/~--;;J-¡-. ~ -, .#1' " J..-/ <br />M. Saber Sarwary, P.E. ;flJ4'~U Chang, '. <br />~enior Civil Engineer 1) Manager, 7/gin eri~g & Construction <br /> <br />~' ~ (11'¡~ <br /> <br />v <br />Joel Patterson Ed Everett <br />Community Development Services Director City Manager <br /> <br /> <br />fOIL- <br /> <br />MSS/PD:ss <br />s/librarylreports/saber/approval/approvaL selection of aggregate type for slurry seaL 6.5.06 <br /> <br />Page 3 of 3 <br />