EarthFest at Temple Ambler
U.S. Army Corps of Engineers Philadelphia District biologist Steve Allen demonstrates how USACE maps the sea floor when investigating borrow areas. USACE participated in EarthFest at Temple Ambler on April 26. Thousands of students participated in the event with more than 90 exhibitors.

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Photo by: Tim Boyle |  VIRIN: 130426-A-EO314-109.JPG