CHAPTER II, SECTION 4 ENIWETOK ATOLL LENGTH WIDTH AT TOP ELEVATION OF TOP GENE- HELEN 1,200’ 24’ + 9.0 Estimated 200 riprap (lin-ft.) used on both sides (ocean and lagoon) Causeway constructed on site of existing “IVY” causeway. HELEN - IRENE 1,759 24’ + 9.0 Estimated 400 riprap (linit.) used on both sides (ocean and lagoon) Causeway constructed on site of existing “IVY” causeway. RUBY- SALLY 1,200’ 70 + 12.0 SITE COMMENTS Fill was required for minor repair of existing causeway. Some of the timber bulkhead was also replaced. Built originally for GREENHOUSE. SALLY- TILDA 600’ 35’ + 12.0 Existing sheet pile causeway. Built for GREENHOUSE (Earth filled) Minor repairs. TILDA - URSULA 490° 20’ + 12.0 Existing SALLY - STATION 1 217 1 + 9.0 Timber and rail bulkhead, earth filled to site of Station 1. STATION 1 M.M.I. 170 110’ + 9.0 Timber and Earth filled. rail bulkhead, YVONNE - STATION 24 470 24’ + 9.0 Timber and earth filled. rail bulkhead, STATION 24 M.M.1L. 110 100’ + 9.9 Timber and rail bulkhead, earth filled. Extension for Station 1819. Approximately 100’ long x 40’ wide, ““T” shaped. 1,500” AY + 7 To Portion of causeway timber andrail (ocean side) with nat- timber causeway. Built for GREENHOUSE (Trestle type) Minor repairs. YVONNE- STATION 1524 + 9.0 Figure 2-153. Page 2-174 Constructing Station 1524 Causeway ural earth slope on lagoon side. Figure 2-154. Waves Breaking Over Station 1524 Causeway