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原文传递 FINAL COST REDUCTION STUDY FOR THE GEYSERS RECHARGE ALTERNATIVE SANTA ROSA SUBREGIONAL LONG-TERM WASTEWATER PROJECT

题名：	FINAL COST REDUCTION STUDY FOR THE GEYSERS RECHARGE ALTERNATIVE SANTA ROSA SUBREGIONAL LONG-TERM WASTEWATER PROJECT
关键词：	alternative；wastewater；regional；sers；rosa；reduct；project；long；breg；final
摘要：	The purpose of this study is to determine whether or not cost reduction opportunities exist for the Geysers Recharge Alternative as defined in the Santa Rosa Subregional Long-Term Wastewater Project EIR/EIS (EIR/EIS). The City of Santa Rosa has been directed to have a plan for reclaimed water disposal in place by 1999 which will meet future opacity needs under all weather conditions. A Draft EIR/EIS released in July 19% and a Final EIR certified in June 1997 examine four primary alternatives plus the No Action (No Project) Alternative. Two of the primary alternatives involve agricultural irrigation with reclaimed water, either in western or southern Sonoma County. Another involves increased discharge of reclaimed water into the Russian River. The fourth involves using reclaimed water to replenish the geothermal reservoir at the Geysers, The addition of this water source would enable the Geysers operators to produce more steam from the geothermail area and thereby prolong the life and economic production level of the steamfield and the geothermal power plants supplied by the steamfield. A primary purpose of the EIR/EIS was to analyze the potential environmental impacts (that is to say, physical effects) of each of the alternatives described in the EIR/EIS. Preliminary estimates of construction and operating costs were also included. Those estimates were based on the assumption that the Santa Rosa Subregional Reclamation System would bear all costs of construction and operation. The estimates were also based on a consistent set of engineering and cost factors for each alternative and were considered conservative; i.e. they were intended to identify the maximum potential costs. Inject costs will, of course, be an important consideration as the City makes its decision on a preferred alternative (as will environmental and other considerations). The analysis contained in this study is intended to examine in more detail the costs that might be incurred in the construction and operation of a Geysers project and to assess whether cost reduction opportunities exist for such an alternative or variations of it This Study provides additional refined cost estimates for new scenarios which utilize an alternative pipeline alignment and a range of reclaimed water flows, which deliver less water to the Geysers than proposed in the EIR/EIS (by distributing flow to other project components). Also, electrical power rates were revised to reflect the recent changes in costs associated with deregulation of the power industry. In addition, this report provides information on sources of potential public and private funding available and future environmental documentation required if the cost reduction were to be selected by the City as part of their preferred alternative. This study has been supported by a grant from the U.S. Department of Energy, as appropriated by the U.S. Congress, together with assistance from UNOCAL, PG&E, and the California State Lands Commission.
报告类型：	科技报告