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• 0 <br /> or at any other time be introduced to the well. During development, water will be <br /> removed throughout the entire water column by periodically lowering and raising the <br /> pump intake (or bailer stopping point). <br /> During development and test pumping of the wells, development water will be conveyed <br /> away from the well site in such a manner as to minimize erosion and avoid inundation. <br /> Water, including mud, sand, and debris pumped from the well during development and <br /> testing, will be disposed of in such a manner as not to damage or interfere with work or <br /> property of others. <br /> Part of the well development will be the washing of the entire well cap and the interior of <br /> the well casing above the water table using only water from the well. The result of this <br /> operation will be a well casing free of extraneous materials (grout, bentonite, sand, etc.) <br /> inside the riser, well cap, and blank casing between the top of the well casing and the <br /> water table. The washing will be conducted before and/or during development. <br /> The following data will be recorded as part of development: <br /> • Well designation. <br /> • Date(s) of well installation. <br /> • Date(s) and time of well development. <br /> • Static water level from the top of well casing. <br /> • Quantity of fluid in well prior to development standing in the well and contained <br /> in saturated annulus (assume 30 percent porosity). <br /> • Field measurement of pH before,twice during, and after development using an <br /> electrometric device (EPA 150.1 -Methods for Chemical Analysis of Water and <br /> Wastes, EPA 600/4-79/020). <br /> • Field measurement of specific conductance before, twice during, and after <br /> development using a conductivity meter (EPA 150.1 -Methods for Chemical <br /> Analysis of Water and Wastes, EPA 600/4-79/020). Conductance and pH <br /> readings will be obtained concurrently. <br /> • Depth from top of well casing to bottom of well. <br /> • Screen length. <br /> • Depth from top of well casing to top of sediment inside well, before and after <br /> development. <br /> Project Workplan 6 SA1433 <br /> July 30,2004 nAsa01433\gwmwiwp\workpIan.doc <br />