Agenda - 09-16-1986 - Laserfiche WebLink

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Sawyer will offer the following services in undertaking the reservoir feasibility study: a. Preliminary construction layouts will be prepared for the purposes of establishing the nature and 1) Hazen and Sawyer will collect and analyze the available quantities of work required. data for the purpose of determining the initial and future water requirements for the Northern Orange b. Estimates of land area needs and relocations will County area. Population and water use projections be developed to the extent possible based on developed by other governmental agencies will also be available information. obtained and reviewed to establish a complete data base for determining future water needs. This portion of C. Preliminary estimates of spillway requirements the study is very important since it establishes the will be developed based on current North Carolina safe yield that must be developed from reservoir sites regulations. evaluated during the feasibility study, and the likely timing of growth of the water needs. d Preliminary cost estimates Will be developed for construction, including land acquisition and 2) Utilizing existing sources , data will be collected est•fmated'annual operation and maintenance cost. concerning the existing land use features, historic structures and sites , geology, soils, climatology, e. Based on -information previously developed under socio-economic characteristics , water and biological Item 2 ) above and on the other projects , a resources , and point and non-point sources of preliminary assessment of expected environmental F pollution. Our current familiarity with many of these and socio-economic impacts will be made. basin characteristics will enhance our technical evaluation data base. 5) Hazen and Sawyer will determine the most appropriate site for development of a reservoir to meet the 3) Using existing topographic information, potential anticipated long-term water supply needs of Orange reservoir sites in the upper Eno Basin will be County. If it is determined that a combination of Identified and evaluated. At a minimum, alternatives reservoir projects is advantageous, a recommendation selected for study will include the Seven Mile Creek will be made for priority of construction. Particular drainage basin, the expansion of Corporation Lake, and consideration will be given to the extent of present s sites above the confluence of McGowan Creek and the Eno and near term needs and the expected timing of River. Evaluation criteria will include the following: development of the long-term need. If possible, a I step-wise construction program will be developed to a. Topographic and geophysical characteristics of the l i m i t i n i t i a l a xperid'i tunes and 't'a i for facility s site. construction to actual timing of needs. b, Determination of required storage volume based on 6) A report will be prepared -covering all the above , low glow hydrologic calculations, aspects of the study. The report discussion will include consideration of available methods for C.. Land and building acquisition and required financing, steps and procedures involved in relocation of highways and roads, implementing a reservoir development plan, and recommendations for protection of water quality within d. Drainage area location and characteristics as the reservoir drainage area both before and after related to present and expected future water construction. quality and suitabllity for use as a public water supply. 4? Based on the evaluation criteria above, a preliminar=y feasibility assessment will'be made for each potential reservoir site. For those sites determined feasible, the following Information will be develoFedr ' 0 H