Preface The field study and analysis described in this report were performed by the U.S.. Army Engineer Waterways Experiment Station's (WES's) Coastal Engineering Research Center (CERC) and Geotechnical Laboratory (GL) for the U.S. Army Engineer (USAE) District, New York. A Pilot Study was designed and conducted off the north New Jersey shore at the approved sand borrow site for the Sea Bright Beach Erosion Control Project during September 1995 to test and evaluate various technologies for characterizing ordnance contamination. USAE Division, Huntsville, reviewed and approved the pilot study safety plan. USAE District, New York, provided survey vessel support. The U.S. Coast Guard Station at Sandy Hook provided dockage, logistical support, and an operation base. Rangers at the Fort Hancock National Park and Explosive Ordnance Disposal (EOD) team members at Fort Monmouth and Earle Naval Air Station provided valuable input on the nature and history of ordnance use and finds in the study area. CERC coordinated the overall study, analysis, and reporting. GL coordinated the magnetometer data collection and data analysis. CR Environmental provided the research vessel with Global Positioning System (GPS) position controls used for the magnetometer survey, Edgetech conducted the side-scan sonar and X-star surveys, and Geometries furnished and operated the magnetometer. Additional magnetic data processing was conducted by Messrs. Douglas DeProspo, Erick Cleary, and Thomas Bell of Arete Engineeering Technologies Corporation (AETC). USAE District, New York, personnel responsible for project oversight include Mr. Joseph Zaraszczak and Ms. Lynn Bocamazo.

This paper will discuss experience and approaches to the use of segmented breakwaters for beach erosion control in the United States. Several prototype cases are examined and generalizations drawn concerning the resultant beach response. This experience is further evaluated in order to develop a preliminary approach for developing design criteria.

Bl APPENDIX C : WIND-INDUCED OVERTOPPING EVALUATION CI CONVERSION FACTORS NON-SI to SI (METRIC) UNITS OF MEASUREMENT Non-SI units of measurement used in this report can be converted to SI (metric) units as follows: Multiply By To Obtain feet 0.3048 metres cubic feet 0.02831685 cubic metres inches 2.54 centimetres miles (US statute) 1.609347 kilometres miles (US nautical) 1.852 kilometres COASTAL ENGINEERING STUDIES IN SUPPORT OF VIRGINIA BEACH, VIRGINIA BEACH EROSION CONTROL AND HURRICANE PROTECTION PROJECT SEAWALL OVERTOPPING EVALUATION PART I: * A table of factors for converting non-SI to SI (metric) units of measurement is presented on page 3.