9 — Recommendations and Conclusions Relative to 



a Full-Scale Survey 52 



References 54 



Appendix A: Analysis of Magnetometer Targets 



from Long Magnetometer Lines Al 



List of Figures 



Figure 1 . Location map of Sea Bright borrow area relative 



to Fort Hancock 3 



Figure 2. Fort Hancock batteries 6 



Figure 3. Borrow area and bathymetry 13 



Figure 4. Underwater video survey lines. Borrow 



area 1A shown for reference 14 



Figure 5. X-star subbottom profiler survey lines. 



Borrow area 1A shown for reference 15 



Figure 6. Magnetometer survey lines, northern 



portion of borrow area 1A 16 



Figure 7. Long magnetometer survey lines. Overall 



Sea Bright borrow area shown for reference 17 



Figure 8. Side-scan sonar record showing sand waves 20 



Figure 9. X-star record from along line of ordnance 



placed for test of system 20 



Figure 10. Custom-fabricated mount for cesium-vapor 



sensors 28 



Figure 1 1 . Example of horizontal magnetic gradient 

 recorded during calibration tests with 

 inert ordnance test targets, pass number 5 29 



