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October 1, 2004 <br /> ' NOA Project Number: LE03-034 <br /> 4.2 Measurement Procedures <br /> ' Water levels will be measured prior to well development or purging using an electric-line well <br /> sounder. The well sounder.will be decontaminated by washing with a solution of potable water and <br /> ' Liquid-Nox solution or equivalent prior to each measurement event. The water level depth and <br /> elevation measurements will be measured relative to the surveyed reference notch bottom installed in <br /> the northernmost side of the well casing top (Section 5.0). <br /> ' 4.3 Measurement Tolerances <br /> ' The depth to the ground water table will be measured with.a tolerance of 0.01 feet <br /> The moeiitoring wells shouldbe developed by mechanical bailer initially followed by pumping.and. <br /> swabbing as a means to wash or rmiave any fine particles that have intruded into the sand pack <br /> material during construction. <br /> ' 4.4 Completion Criteria <br /> The completion procedures will continue for a period of two continuous hours or until the discharge <br /> ' water becomes relatively free of fine particles (clay and silt size particles),*which ever occurs first. <br /> 4.5 Water Disposal Method <br /> tThe well.development ground water will be disposed by discharging it onto the ground sutface in the <br /> near vicinity of the well. <br /> ' 5.0 SURVEY DETAILS <br /> A California licensed land surveyor will measure the horizontal and vertical coordinates of the <br /> monitoring wells, using the closest benchmark datum. The northernmost side of the top of the well <br /> casing will be notched and used as a reference point for all future ground water table elevation <br /> ' measurements. The elevation of the bottom of the reference notch will be measured by the land <br /> surveyor with a tolerance of 0.01 feet:MSL. The average ground surface surrounding the immediate <br /> area of the well casing will be measured with a tolerance of 0.1 feet MSL. <br /> ' 6.0 WELL SAMPLING <br /> Representative water samples will be taken from the up-gradient monitoring well and down-gradient <br /> monitoring wells located adjacent to the treatment pond.and agricultural application area. The <br /> purpose of the sampling is to characterize both the "background" physical and cherrxical properties of <br /> ' the natural ground water and areas which maybe affected by the wastewater treatment pond or <br /> application of effluent to agricultural fields. <br /> 7 <br />