Laserfiche WebLink
Mr. Timothy W. Crist, P.E. <br />February 26, 1996 <br />Page 3 <br />[aomtel 110ivAym►11 p Z1► k-0 101► ICNA I R11 I I ► 0 vMIA DR WA ►a <br />The City is arranging to verify the adequacy of fertilizer quantities and quality by having a <br />soils laboratory test the soil for fertility. We will ask the laboratory to recommend the type <br />and amount of any nutrients that may be lacking. <br />Comment No. 1: What is the cost of the soil if it has to be brought in ? <br />It's very unlikely that soil will have to be brought in. Testing of the 45 AC. property south of <br />the landfill shows that native clays are suitable for final cover. To confirm that sufficient <br />quantities of these soils are available, we are having the 126 AC borrow site property <br />tested also. <br />If native soils are inadequate, we will either have clay trucked in at an approximate cost <br />of $5.00 per cubic yard or use a GCL in place of the clay at a cost of $.40/sq. ft. - <br />$.60/sq. ft. <br />Comment No. 2: What are the costs associated with compaction ? <br />The average unit cost for hauling, spreading, grading, and compacting is $2.50 per <br />cubic yard. A seperate cost for compacting was not calculated because earth work is <br />normally bid on a unit cost basis and includes the three services mentioned above. A <br />detailed cost breakdown of the $2.50 per cubic yard cost estimate is shown on page 18 <br />of the Preliminary Closure and Postclosure Plan (PCPCP). <br />Comment No. 3: How come the number of loads are the same for one foot of <br />compacted soil, as for one foot of non -compacted soil in the vegetative layer ? <br />Clay layer and vegetative layer soil quantities may not be exactly the same but they <br />should be fairly close since both layers will have to be compacted (the vegetative layer <br />less than the clay layer). We feel these estimates are adequate (actually more <br />conservative) for planning purposes. <br />