The new water treatment facility was designed to handle the city's projected population growth for the next thirty years. ______,…

The second sentence describes an outcome sharply at odds with the thirty-year design horizon named in the first sentence, reaching capacity in a small fraction of that projected time. Yet signals precisely that kind of unexpected contrast. Accordingly would frame the rapid strain as a logical consequence of the design itself, which reverses the relationship. Similarly would suggest the two sentences align, but a thirty-year plan and an eight-year capacity crunch are in tension, not agreement. Specifically would frame the second sentence as a detailed elaboration of the first, not a contradiction of its premise.