Res 2002-052 - Laserfiche WebLink

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I geophysical logging methods. Provide a map and list of all known wells within 1,000 feet of the proposed su bdi vision boundaries (or a distance where measurable draw-down effects from the proposed subdivision well are expected). Each well is to be located by latitude and longitude. (b) Obtain the static water level to the nearest one tenth foot and equate to the mean sea level elevation. Hays County reserves the right to maintain selected monitor well sites for long-term data acquisition of static water levels in order to track regional water level trends. The test and monitor wells shall contain a one inch plug to facilitate possible future water level monitoring. (c) Perform an aquifer pump test using approved methods of the karst aquifer systems of the Texas Hill Country. The pump test shall be performed prior to any acidization or other flow capacity treatment. The duration of the pump test shall be 24 hours or until the water level has stabilized (less than one tenth foot fluctuations) in the test well for a period exceeding two hours. The constant pumping rate used in the pumping test shall be at least the average rate of pumping for water supply use. Following pumping, water level measurements will be continued in the test and monitor wells until levels recover to their original static levels. (d) Using information from the aquifer pump test, calculate aquifer properties including transmissivity, hydraulic conductivity, and storage coefficient of the test and monitor wells. (e) Using aquifer properties and proposed pumping rates for the full subdivision build-out, provide cumulative drawn- down calculations for selected radial distances up to l,OOO feet of the proposed subdivision boundaries, or a distance I I