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<br />Upper Big Sandy Water Balance <br />Attachment 2 - Page 2 <br /> <br />SECTION I <br />DESCRIPTION OF WORK <br /> <br />The Upper Big Sandy Water Balance project will consist of three major tasks, described below <br />The purpose of the project is to obtain and analyze additional data which will assist the Uppe <br />Big Sandy Ground Water Management District in their decision-making role. The first step is t( <br />obtain additional information through the collection of field data. The second step is to conduc <br />a member survey and additional research to obtain more data on precipitation, streamflow, am <br />uses of the alluvial ground water. The third step is to use the information obtained from previou: <br />studies constructed by other consultants and governmental agencies along with the data collecte( <br />during this project to revise and update a water balance for the Upper Big Sandy Ground Watel <br />Management District. <br /> <br />Task 1 - Field Work <br /> <br />The first task involves field work including: <br />. The advancement of multiple test holes and/or ground water monitoring wells during a <br />three-day period, near the downstream end of the Basin to allow for detailed geologic <br />logs and water level data collection. Water level data can then be compared to stream <br />observations and/or measurements. <br />. Slug testing of existing and newly constructed ground water wells to obtain site-specific <br />hydraulic parameters including the hydraulic conductivity of the alluvial aquifer. <br /> <br />The installation of additional ground water monitoring wells near the downstream end of the <br />Upper Big Sandy Ground Water Basin will provide data to be used in the quantification of the <br />underflow leaving the Basin. Additionally, the collection of site-specific geologic and <br />hydrogeologic data obtained during test hole and monitoring well boring will allow for <br />interpretation of the width of the alluvium which is essential in storage volume and available <br />water calculations. Slug testing existing and newly constructed ground wells will provide <br />defensible data for various hydraulic parameters including hydraulic conductivity to be used in <br />the water balance. <br /> <br />Work will be conducted by Mr. Phillippe Martin and Mr. Bill Berg, geologists with Martin and <br />Wood Water Consultants, Ms. Cristy Radabaugh, an engineer with Martin and Wood Water <br />Consultants and by subcontractors such as licensed drilling companies. Mr. Martin and Mr. Berg <br />will provide technical oversight during the test hole drilling and monitoring well installation. <br />Ms. Radabaugh and Mr. Berg will perform slug tests on the ground water monitoring wells and <br />will analyze the data to determine site-specific hydraulic parameters. <br /> <br />Deliverab1es for this task will include a letter report describing the well installation and the <br />results of the field testing, and any problems encountered. <br /> <br />S:\694 - Upper Big Sandy Mgmt Dist\694.2 - AK Roundtable\Application\AK Scope.doc <br />