Conventional hydraulic testing methods were developed to provide answers that are best suited to water supply problems, not remediation hydraulics problems. The key issue is that most hydraulic tests average out the descriptive information like a damping fi lter: the long-term, steady-state tests encompass large aquifer volumes and are biased low with respect to the mobile porosity. Shortterm, low-volume tests are better because we can isolate particular depositional elements during the test to characterize the hydraulic conductivity values and trends associated with facies changes in the aquifer. Ideally, hydraulic testing methods should be selected that enable remediation hydrogeologists to make hydrostratigraphy interpretations more quantitative. The goal is to quantify the hydraulic conductivity associated with particular facies and facilitate an integrated interpretation of plume geometry and migration pathways.