REPOSITORY COLLECTION BOX No. Fo.pen Doe| PA80 HOS 19a DoE /NV 1239 EWETAK FOLDERWF GENERAL ConkesPonpenos” FY 1978 April 10, 1978 Major Max Toch JTG Enewetak Atoll APO San Francisco 96333 Dear Major This Toch: is intended documentation for to provide further identification and the eight groundwater wells should be preserved if Although there was not possible time for on Runit which for further research use. detailed mapping on my visit to Runit, the officer there accompanied me to all of the wells and we discussed in detail how to identify all of the wells. The attached map, this letter, and his observations will permit easy identification of all wells. Descriptions: all ARU wells are 4'' gray PVC with a white threaded coupler and a gray cap. The PVC casing has thin vertical slots. All have been marked with yellow plastic tape; in addition, ARU-2 and ARU-3 flaspole with still had red pennant) the remains attached to of marker flags them on 28 (white March. ARU-1 is in an open area just north of the region which has been cleared; it is directly lagoonward of the first ocean-side bunker north of the tower building, between the road and the lagoon shore. Marked with tape. ARU-2 is about 25 m inland from the large concrete lagoon beach at the voint where a metal pipe comes the island onto the beach. It is marked with tape ARU-3 is on the oceanward side of the old NE. side of the crater, about 75 mS.E. is marked with tape anda flag. road of block on the out from under and a flag. leading to the the crater rim. It The XRU wells are all 2" white PVC, with vertical slots and without caps. XRU-2a, 3 and 5 have a pair of 4" PVC casing pieces set up so that one 4" piece serves as a sleeve around the 2" casing. All have been marked with yellow tape; 2a, 3 and 5 also have the remains of flags attached.