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Planning and Programming:
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Master Plan had been based onthedri-Enjebi returning to their he
island. Further details of the final Master Plan are contained in Chapte
° Information obtained from the meetings with the dri-Enewetak,
data from the Engineering Study and from preliminary results of
the pr
Radiological Survey, was enough to begin preparing a DEISfor
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and to develop initial funding estimates. H&N was engaged by DN.
compile the DEIS, and they started work on 19 June 1973: On 21 June |
LTG Dunn testified before the House Subcommittee on Appropriati
seeking Fiscal Year (FY) 1974 funds to complete the planning studies
surveys.7° A total of $270,000 was provided in FY 1974 for the EIS
other planning studies.
THE EXPLORATORY PROGRAM ON ENIWETOR: JUNE 1973
in June 1973, DNA decided to abandon the PACEII high explo
cratering program at Enewetakandso stipulated in the U.S. District C
in Hawaii. The court order preventing PACE II authorized
continuation of the PACEI geological studies, which were renamed
Exploratory Program on Eniwetok (EXPOE).7!
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Field studies for EXPOE began in October 1973 and included the«
drilling of 46 bore holes (S0-100m depth) on ten islands. The purpose
to define the near-subsurface geology ofthe atoll in order that pree'
geologic models could be madeat each of the six nuclear cratersites
addition, seismic refraction profiles were conducted on the same islanc
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define seismic velocities. Also in the program approved by the Dis
Court was a 40-foot, cylindrical, high explosive, in situ test, which
conducted at the PACE test bed on Aomonto provide dynamic mate
properties of the PACE media. Several miles of over-water seis
reflection profiles also were conducted during EXPOE. These over-w
seismic studies centered on the three high-yield nuclear craters (Oa
megatons; Mike, {0.4 megatons; and Koa, 1.37 megatons) and provi
significant information concerning the subsurface morphology of
craters. In addition to the EXPOEfield studies, a comprehensive se:
was conducted of old photos, films, drawings, etc., to define the e
crater dimensions, device emplacement details, device yield
performance details, and ejecta and debris distribution for the crate
events.
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Several significant studies were conducted in support of the PACE
EXPOE programs. These additional studies included: soil and »
surveys in the northern part of the atoll for radioactive debris location
characterization; analysis of previous studies on cratering and testin
general; flora and fauna ecological studies; and identification of water-