: . . . Mr. Roger Ray -3- -.. , ) April 24, 1978 The second option considers the use of a small tractor, with backhoe, which will profile soil but will have insufficient power or scope to provide new ground water sites. Added to the cost of option 1 will be an equipment cost of 11.9K for a small diesel tractor of the Kubota class (L245/DT). This unit will require 2 helicopter lifts from either the ship to the island or between islands. In addition to.the sampling required to meet the objectives of option 1, 955 additional soil profile samples will be obtained which will increase the analytical cost for soil and vegetation samples to 800K. The third option requires the use of a larger heavy duty tractor with sufficient power to not only profile for soi~+samples, but to excavate sufficient soil in a reasonable time to permit us to establish new groundwater sites. The added equipment cost fcr a diesel Ford tractor is an increase of 3.6K over the costs for option 2. lieshould be able to establish one new well a day, or at a maximum, 45 new sites. Analysis of water from these wells will add 20K onto the analytical costs for water analysis. Terrestrial costs will be on the same as option 2. The disassembled tractor and fuel will require at least 2 helicopter lifts every time the unit is moved. These lifts should be added to those required to move personnel,.equipment, and the jeep (when necessary) to assess the required flying time at the Atolls. The above opticns are based on the number of samples we would actually analyze. It is i~ssumedin these options that on several of the Atolls the radionuclide concentrations and distributions will be uniform and homogeneous. If this is not the case, then analysis of additional samples may be required. Additional samples will be available because we will collect Imoreat each Atoll than was considered in the above cost estimate. . . . Manpower requirements in the field fora marine and terrestrial option 1 are 9-10 people. A marine and terrestrial option 2will require 10-11 people, and a marine and terrestrial option 3 will require 12-13,people in field operations. Me would also like to have engineers available to rig the tractor and jeep to the aircraft and be responsible for asse~bling and disassembling the tractor on the ground. Our own personnel have no experience in prepar~ng slings.for tractors attached to helicopters and have had Iimiteclexperience in assembling and disassembling units on the ground. At the meeting, it was indicated that this phase of the operation wouldbe our responsibility. Since we are concerned not only for our own safety but for others as well, having individuals knowledgeable in rigging and assembling of heavy duty equipment would be highly desirable. There would be incremental manpower costs such as overtime/dislocation and air travel for the number of individuals considered for any of the options. Me estimate these costs at a rate of 100K/10 people for 3 months. Shipping costs for the entire program are estimated at 35K.