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6.0 opinion on Which Waste Processing Technologies <br />Should Be Considered for Orange County <br />Of the vxeote processing technologies examined, only \NTE is a proven technology <br />which could be recommended for implementation consideration bv Orange County at <br />this point in time. As mentioned earlier, there are 09 VVTE plants generating power <br />in the U.S. and hundreds worldwide. The other technologies discussed are in various <br />stages ofdevelopment. <br />The alternative technologies are not mature enough to mitigate the risks potentially <br />inherent with their implementation: <br />• Risk of technical failure -Tho'tachno|ogyisunproven. <br />• Risk of pricing uncertainty - Should the: County enter into a purchasing <br />agreement with a vendor for a VVFT, the ultimate price paid may be much <br />higher than that ind|oated in the proposal. <br />• Risk of environmental non-compliance - The technology's environnn�nta| <br />performance may be insufficient to meet regulations. <br />In evaluating waste processing technologies for Orange County to consider, it is <br />apparent that there is not enough waste generated by the County to gain the <br />economies of scale necessary to make a waste processing technology a cost-effective investment. The estimated co at to process a ton of waste at VTE facility in ]range <br />` <br />County is�1O2. To�mnpn ethaeoznornicsofuti|izingwasteprooessingtechno|ogy, <br />- <br />Orange County would need to pa rtn�rwith an adjacent connunity . The $102 1O2perton <br />is not competitive with the County's current landfill disposal fee of $49 , nor with <br />Waste Industries' cost of �42 per ton to transfer and dispose of waste. Although <br />currently unknown, the cost of the County's new transfer station and |andfi||ing at a <br />investigates th stof <br />remote 'ibais unlikely toneach$1OOperton. As the County eoo <br />transfer and disposal in preparation of its landfill closing, VVP[ may be more <br />economically attractive once the cost of transfer and disposal is known. <br />If $102 per ton were to look competitive, it is recommended that Orange County <br />conduct \NTE plant feasibility study which considers both mass-burn and modular <br />technologies, and/or fuel production approaches. <br />GBB/CO8027-01 30 August 15, 2008 <br />