Why the Big Metal Pipe on Mile Hill Drive?

The in basket: The neighbors around the Mile Hill Drive construction project in South Kitsap, including me, looked at several lengths of huge corrugated metal pipe lying alongside the work and wondered what it could be for. There aren’t any streams near there and the pipe is way too large to be needed to channel rain runoff..
I asked their purpose.


The in basket: The neighbors around the Mile Hill Drive construction project in South Kitsap, including me, looked at several lengths of huge corrugated metal pipe lying alongside the work and wondered what it could be for. There aren’t any streams near there and the pipe is way too large to be needed to channel rain runoff..
I asked their purpose.
The out basket: Jon Brand, assistant public works director for Kitsap County roads, said they are for storm water retention. When it rains hard, the runoff will be collected in the pipes and released gradually to keep a heavier flow from damaging nearby property. It also will contain road oils and such contaminants that can be removed and disposed of appropriately.
The county weighs the cost of this kind of storm water control against creating an open pond. The Mile Hill Drive project has at least one of those, too, at the Alaska Avenue intersection. When land for a pond can be acquired reasonably or is already owned by the county, that’s usually the answer. When it will cost a lot to acquire extra land, it becomes more cost-effective to bury the pipe in the right of way to retain the water.

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