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Section 02731 Irrigation Water Well A. Set casing plumb and true to line. Tests for plumbness and alignment must be made after construction of well and before its acceptance. Additional tests however, may be made during performance of work. B. Test alignment of well by lowering into well, to a depth of 75', a section of pipe approximately 40' long. Provide outer diameter of pipe not more than 1/2" smaller than diameter of that part of casing or hole being tested. C. Well casing shall not be out of plumb more than 2/3 of the diameter of the casing per 100' of length. 3.8 Testing well for yield and draw down A. After the well has been constructed and cleaned out, the depth of well accurately measured, conduct final pumping tests. B. Provide a variable capacity test pump with minimum capacity of maximum expected yield at a total head equal to draw down in well, plus head loss in pump column and discharge pipe. C. Provide necessary discharge piping for pumping unit to conduct water to a point of disposal so as to avoid a nuisance or endanger adjacent property. D. Provide and maintain equipment of adequate size and type for measuring flow of water, such as weir box, orifice or water meter. E. Measure elevation of water level in well. F. Provide labor, motive power and other necessary materials, equipment and supplies required to operate pumping unit. G. After test pump and auxiliary equipment have been installed, make arrangements for conducting pumping test and notify Owner and Architect 3 -days prior to starting test. 1. Note water level elevations, referred to an assigned datum in well. 2. Start test pump and adjust pumping rate as necessary. 3. Record readings of water level in well and pumping rate at 30 -minute intervals. 4. Take water samples for analysis at the beginning and the ending of the pump test. H. Final testing for each well to consist of 4 -hours of continuous pumping after reaching maximum draw down. 1. After completion of final test, remove by necessary means any sand, stones or other foreign materials from the in well. I. Upon completion of pumping test, record returning water levels in well for a sufficient period, at timed 15 minute intervals, to achieve 95% recovery, so that a curve of the recovery rate of the well may be plotted. J. Provide all test results and other required submittals to the Owner and Architect prior to installation of the pump. 3.9 Unit prices for well construction A. Bid all well work as indicated on the drawings and described in these specifications. The base bid shall be based upon the well being 140' deep, with 20' of stainless steel screen, and 120' of 6" casing. The Contractor shall submit the following unit price items and they shall govern additions to or deductions from quantities included in Base Bid for work under this section. 1. Cost per foot of drilling. 2. Cost per foot of casing (in place). State Road 60 and 431 Avenue