本文讨论了北大西洋沿海平原砂砾石含水层蓄水与恢复（ASR）应用面临的挑战。这些挑战通常分为四类:水力学、地质学、地球化学和生物化学。具体的水力挑战包括注入压力限制、现场水力梯度、井设计考虑和气泡夹带。地质问题包括在非常小的距离内，导水率可能发生几个数量级的变化，以及粘土的矿物学和收缩/膨胀潜力的变化。 地球化学问题包括防止矿物沉淀和颗粒形成，从而导致井网和砾石充填堵塞，以及防止可能导致水质恶化的矿物溶解。生化因素包括将富氧水注入之前缺氧的地层，从而刺激细菌生长。作者认为，为了了解自然系统对注入水的反应，需要进行模拟多次补给循环的现场先导试验。

This paper discusses challenges to the application of aquifer storage and recovery (ASR) in sand and gravel aquifers within the northern Atlantic coastal plain. The challenges generally fall within four interactive categories: hydraulics, geology, geochemistry, and biochemistry. Specific hydraulic challenges include injection pressure limitations, site hydraulic gradients, well design considerations, and air bubble entrainment. Geologic problems include potential for orders of magnitude changes in hydraulic conductivity over very small distances and variations in mineralogy and shrink/swell potential of clays. Geochemistry issues include preventing mineral precipitation and particulate formation which results in well screen and gravel pack plugging, and preventing mineral dissolution which could cause deterioration in water quality. Biochemical considerations include stimulation of bacteria growth resulting from injecting oxygen-rich waters into previously anoxic formations. The authors believe that in-situ pilot tests with simulation of multiple recharge cycles are required to understand how the natural system will respond to injected water.