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Anyone know the explanation for long running dull explosive sounds in the neighborhood?

12 Aug 2016 12:52 PM | Anonymous member

Hi neighbors, I'd love to know if I'm the only one with this question, but for several years, at very intermittent and unpredictable times, my wife and I have heard what sounds like dynamite explosions for excavation a long distance away. They are muted "thuds" by the time they get to our ears but suggest a pile driver or something substantial, coming from the south or southwest of Sumner.


The pattern is always 12 to 20 thuds, spaced within about five seconds of each other. The intermittent nature makes it impossible to prepare an attempt to triangulate where they're coming from. Most recently early this week at around 8:00a. Very frustrating.


I finally put the question to the media relations person at DC Water, thinking the Dalecarlia reservoir might be able to explain. She got back to me right away (yay) and referred me to Tom Jacobus, the head of the Washington Aqueduct, who also got back to me right away (yay) but neither had any answers. My only theory is goose cannons at the reservoir but you'd think Jacobus would know about that.


Any enlightenment?


Thanks!

David and Robin Sproul

5103 Randall Lane 

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