TCEQ Ground Water Production Chapter 4 questions with correct answers

Water used in a mixing of drilling fluids must contain a chlorine residual of ? CORRECT ANSWER-at least .5MG When drilling a deep well how often should you check bore hole alignment? CORRECT ANSWER-every 100 to 500 feet What is the TCEQ requirement when a gravel packed well is constructed? CORRECT ANSWER-gravel must be of selected and graded quality and must be thoroughly disinfected with a 50 mg/l free chlorine solution as it is added to the well cavity Pumping water level CORRECT ANSWER-the level water stands in a pumping well draw down CORRECT ANSWER-difference between well static level and pumping level Well yield CORRECT ANSWER-the rate of water that a well can supply over a long period of time specific yield CORRECT ANSWER-the portion that drains under the influence of gravity - available for use specific capacity CORRECT ANSWER-the yield per foot of drawdown from a well and is commonly expressed as gpm per foot of drawdown.