To ensure proper maintenance and repair of buried water-carrying services, leakage from which might otherwise endanger slopes, 508 fill slopes were studied, resulting in the issue of 18 investigation/repair orders.

• 为确保地下输水设施得到妥善保养和维修（这些设施如漏水会影响斜坡安全），该署研究了508幅填土斜坡，结果共发出18份勘测/修葺令。