AbstractThe patented PEM system is a passive beach dewatering technology consisting of hollow permeable tubes installed vertically into the beach in a grid pattern. The system requires no pumps or energy to operate. At Hillsboro Beach, Florida the system was installed for a 3-year period at a highly eroding part of the beach where the shoreline historically had lost 25.2 ft. (-7.7 m) in 3 years. By the end of the 3-year period the shoreline in the 1-mile PEM project area had advanced 26.9 ft. (8.2 m), erosion had stopped, and the PEM area had accreted from R-monument line to MHW, to -5ft NAVD, and to DOC without the control areas to the North and South being negatively affected.
Burney, C.M. 2009. Hillsboro Beach Pressure Equalizing Modules Experimental Project Sea Turtle Monitoring Report January 2010, Nova Southeastern University, Oceanographic Center, Florida
CEC. 2007. Hillsboro Beach PEM Installation, the Experimental Test Plan, Coastal Engineering Consultants, Naples, Florida
Christensen, K.W., Nettles, S., and Gable, F.J., 2015. Passive dewatering. A soft way to extend the life of beach nourishments. FSBPA Technical Conference February 2015, https://www.fsbpa.com/2015TechPresentations/Christensen.pdf
Ekkelenkamp, H.M. 2011. Drainage tubes versus sediment, MSc thesis, Delft University of Technology
Olsen and Associates, Inc. 2008. Broward County Shore Protection Project - Segment III, Broward County, Florida 1-Year Post-Construction Hillsboro Beach / Deerfield Beach Physical Monitoring Analysis Report, January 2008
Turner and Leatherman. 1997. Beach dewatering as a "soft† engineering solution to coastal erosion - a history and critical review, Journal of Coastal Research 13(4), pp. 1050-1063.