Recovery test. Following the constant-rate discharge test, recovery shall be monitored until the well has recovered to ninety-eight percent (98%) of its original SWL, with water levels measured at logarithmic time intervals. Analysis of all aquifer testing, recovery, and surface water monitoring data will be performed to determine aquifer characteristics including transmissivity, storativity, specific capacity, and safe yield, and to assess the impacts on surface water caused by long-term groundwater production in the area. Estimates will be made of long term well yield, and the configuration and extent of the cone of depression at one (1), five (5), ten (10), and twenty (20) years into the future for the entire well field. This analysis shall assume production at maximum safe yield, and the design discharge if different. Assumptions and analytical methods used in these calcu- lations shall be included. This information will be presented in the final report.
Recovery test. Following the step test, shut-in pressures shall be monitored at logarithmic time intervals until the well has recovered to ninety eight percent (98%) of its original shut-in pressure.
Recovery test. Immediately after the pump is turned off after the pumping test, start measuring water levels. Measure Recovery until: • Water levels recover to less than 5 % of the total drawdown during the constant discharge test • At least three readings taken in succession are identical • A time equal to the total time taken for the Constant Discharge Test has elapsed The data that needs to be collected includes: • Data and time at commencement of Test • The Static Water level at the start of the test • The depth of the borehole • The distance from the borehole to observation boreholes (if applicable) • Pump installation depth • Water strike depths (if known from drilling/landowner) • Borehole diameter • Rainfall (if it rains during the test) For office use only Version no: 12 Date: 15 February 2021 To be initialled by bidder Initial here • Drawdown of the water level • Rate of discharge (for Steps and constant Tests)
Recovery test. Quarterly Quarterly Duplicate remote 1 day TBD Quarterly test of Backup restorability 100% Remedy against monthly service charges TBD Note Recovery, roll back and tests should be performed without live system downtime.
