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SEC77ON 1 -LANDFILL EXPANSION ISSUES
<br /> Page 1-5
<br /> Year Generation Diversion Transformation
<br /> Projected Estimated (TPY) French Austin Road Refuse Volume Closure Year
<br /> Quantity Quantities Camp Disposal Volume cumulative (By Alt.)
<br /> 1 (TPY) (TPY) Disposal (TPY) (CYM (MMCY)
<br /> (TPY)
<br /> 2031 745,619 372,809 10,812 42,434 204,667 341,145 10.4
<br /> 2032 756,728 378,364 10,812 42,859 208,054 346,757 10.8 Phase V
<br /> 1 2033 768,004 384,002 10,812 43,287 211,474 352,457 11.1
<br /> 2034 779,447 389,723 10,812 43,720 214,948 358,246 11.5
<br /> 2035 791,061 395,530 10,812 44,157 218,474 364,124 11.8
<br /> 2036 802,847 401,424 10,812 44,599 222,056 370,093 12.2
<br /> 2037 814,810 407,405 10,812 45,045 225,693 376,155 12.6
<br /> 2038 826,951 413,475 10,812 45,495 229,387 382,311 13.0
<br /> 2039 839,272 419,636 10,812' 45,950 233,137 388,562 13.4
<br /> ' 2040 851,777 425,889 10,812 46,410 236,946 394,911 13.7
<br /> 2041 864,469 432,234 10,812 46,874 240,814 401,357 14.1
<br /> 2042 877,349 438,675 10,812 47,343 244,742 407,903 14.6
<br /> 2043 890,422 445,211 10,812 47,816 248,731 414,551 15.0
<br /> 2044 903,689 451,845 10,812 48,294 252,781 421,302 15.4
<br /> 2045 917,154 458,577 10,812 48,777 256,894 428,157 15.8 Phow VI
<br /> 1. Projections of waste generation,diversion,transformation and disposal are from the Austin Road Landfill Preliminary
<br /> Design Study Report(R.W. Beck and Associates, 1992). Includes effects of SRRE analysis.
<br /> 2. Com in-place density of refuse is assumed to be 1200 lbstcy.
<br /> 3. The values in this table were generated from percentages and,as such,show a higher level of precision than can be
<br /> truly expected Rounding off to the nearest 100 or 1,000 would give a more realistic value for planning purposes.
<br /> Table 1-2 shows that, based on projected waste disposal volumes, the expansion to the Austin
<br /> Road Landfill will increase the service life by approximately 48 years. Using the assumption that
<br /> the existing landfill will reach capacity and closure In 1997 (and therefore that use of Phase I will
<br /> begin in 1997/1998), then final closure of the last porion of the landfill (Phase VI) is projected to
<br /> occur in about 2045.
<br /> 1.3 LINER AND LEACHATE COLLECTION SYSTEM
<br /> 1.3.1 Introduction
<br /> The proposed liner system will provide containment of the leachate generated within both the
<br /> horizontal and vertical expansions of the landfill. The conceptual design utilizes a composite liner
<br /> system. The leachate collection system provides for removal of leachate from the landfill and
<br /> f consists of a drainage layer which extends over the liner, a system of collection trenches and
<br /> pipes, and leachate collection sumps.
<br /> A leak detection trench system is provided under the landfill collection trenches in the horizontal
<br /> j expansion areas. This system would function as a secondary collection system and for landfill
<br /> vadose monitoring.
<br /> R.W.Beck and tee
<br /> City of Stockton 1611 002
<br />
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