CHAPTER II, SECTION 6 a aee - Figure 2-209. ™ oy nl Causeway - Sugar to Tare Peter to Roger - Approximate length 3000 feet. Roger to Sugar - Approximate length 1000 feet. mately 3000 feet long extending westward from Available bank and reef coral was used, the surface being traffic compacted and stabilized with sea water. From May 1953, when first opened, until heavy construction started and Charlie causeway included at its end an island approximately 0.8 acres in area at elevation plus 10.0 feet on which were located Stations 20, 1110, traffic to and from the batch plant on Oboe increased materially, single-lane roads were adequate. In August 1953 approval was obtained to widen these causeways to provide for a 25foot road and to raise the elevation to plus 8.5 feet in order to minimize washouts at high tide. Final completion was on 5 September 1953. CONTRACT ITEM NUMBER 4A-26-26.1 CAUSEWAYS TARE AND CHARLIE GENERAL. In March 1953 it was established that causeways would be required on sites Charlie and Tare for the vacuum pipe arrays to be used in connection with experiments at those sites. Straight lines 7500 and 5600 feet in length respectively, were necessary, connecting the Scientific Stations at their ends. By suitably locating the Scientific Stations involved, it was possible to obtain these pipeline lengths with the construction of a causeway approxi- site Charlie, and a causeway 1100 feet long joining sites Sugar and Tare - Figure 2-209. The 1202, 1351, 1560.02, 1812.01 and a number of scientific tents and trailers. Both causeways were also used as access roads. The Charlie causeway location and approv- ed borrow areas are shown on Figure 2-211. ENGINEERING. Criteria for location of the pipelines and pipeline causeways were finalized in the Home Office early in March 1953. The location selected for the Tare pipeline and cause- way was reviewed and checked by Field Engineering, insofar as possible conflict with the development of Tare camp facilities was concerned. Drawings showing the plan and profile of both causeways were approved in May 1953. Field Engineering processed the necessary work orders, surveys and inspection of construction. CONSTRUCTION - CHARLIE CAUSEWAY. This causeway was 87 feet wide at an elevation of plus 9.0, and was bulkheaded on the lagoon Page 2-209