|
SEC77ON 1 -LANDFILL EXPANSION ISSUES
<br /> Page 1-3
<br /> I
<br /> i 1.2 SITE CAPACITY AND SERVICE LIFE
<br /> The site capacity of a landfill is determined by calculating the volume available between the
<br /> elevation of the top of the bottom liner system (as shown on the phase development plan
<br /> drawings), and the bottom of the final cover elevations (elevations of the top of the final cover
<br /> system are shown on the final grading plan drawing). The refuse capacity is then calculated by
<br /> estimating the available volume according to the assumed ratio of refuse to daily and intermediate
<br /> soil cover. For an in-place refuse to soil ratio of 4:1,the refuse capacity is equal to eighty percent
<br /> of the site capacity. Table 1-1 shows the site and refuse capacity in cubic yards by phases, and
<br /> also shows refuse capacity in tons(using an assumed compacted refuse density of 1200 lbs/cubic
<br /> yard).
<br /> Table 1.1
<br /> i
<br /> AUSTIN ROAD LANDFILL CAPACITY ESTIMATES
<br /> Refuse Capacity Cumulative Refuse
<br /> f Phase site Capacity (Cubic Yards) Refuse Capacity, Capacity(Tons)
<br /> (1) (Cubic Yards) (2) (Cubic Yards) (3)
<br /> I 1,200,000 960,000 960,000 576,000
<br /> II 1,700,000 1,360,000 2,320,000 816,000
<br /> Ili 1,570,000 1,256,000 3,576,000 754,000
<br /> IV 3,920,000 3,136,000 6,712,000 1,882,000
<br /> V 3,360,000 2,688,000 9,400,000 1,613,000
<br /> VI 6,300,000 5,040,000 14,440,000 3,024,000
<br /> TOTAL 18,050,000 14,440,000 8,665,000
<br /> Bates:
<br /> �l (1) Phases I through IV are horizontal expansion,Phases V and VI we vertical e
<br /> (2) Refuse capacity(Cy) "(444+1))to account for refuse to deny ever ratio of 4:1.
<br /> (3) in-place density of refuse is assumed to be 1200 ibatcy.
<br /> a
<br /> The service life of the landfill is determined by comparing the calculated capacity with the
<br /> t projected waste stream. This is done in Table 1-2, below. Note that no accounting for any cover
<br /> j materials are included in the calculations for Table 1-2 and that minor numerical differences in
<br /> Phases IV, V and VI are attributable to rounding-off of numbers and the fact that the cumulative
<br /> refuse capacity might be achieved partially through the year.
<br /> 1
<br /> 1
<br /> ,
<br /> l
<br /> City of Stockton R.W.!lack and tea
<br /> 1®11.002
<br /> I
<br /> I
<br />
|