A fi eld pump test is performed to determine the transmissivity of a high-capacity aquifer. The confined aquifer thickness is 20 feet and has a porosity of 0.26. Unfortunately, the flow data for the well test was misplaced by the field crew. Can you still estimate the trans rnissivity given the following field data?
• Two observation wells are located 500 ft and 1,000 ft from the pumped well.
• The piezometric surface of the two wells at equilibrium differs by 42. 8 feet.
• The time it takes a conservative tracer to move from the outer observation well to the inner
observation well is 49.5 hours.