Sampling Procedure." Four surface composite samples (A, B, C, and D) were collected at each stake location. At the conclusion of that operation in each plot area, a backhoe was used to provide holes for subsurface profile sampling. These holes were dug about 30 to 50 em away from the actual grid locations to avoid moving the stakes and to a nominal depth of 120 to 140 em. Sidewall soil samples were collected every 10 em starting at a depth of 120 em inthe X-1 area and at a depth of 100 em for the X-2 and X-3 areas. The 5 em thick eut removed by the sampling tool was centered on the respective depths below the surface. The samples were collected from the lower elevations first to avoid contaminating those samples with soil from near the surface which is expected to have the highest concentrations of radioactivity. Tne nominal sample size was about 500 em*. If less material was removed from a cut because of rocks or other debris, a second cut was made at the same depth to insure sufficient sample. Except for the X-] location samples, each was placed in a separate plastic bag and then in an appropriate size (1/2 or 1 gallon) steel paint ean and labelled according to DOE/ERSP Procedure No. 4. The X-1 location samples were placed directly in steel cans. A petri dish with nominal capacity of 100 to 150 grams of soil was prepared in the field from the sample cans for approximately half of the samples and sealed with black electrical tape. The date, stake location, and depth of sample were recorded on the top of the petri dish. Petri dish samples were prepared for the A and B surface composites at all locations and for each of the subsurface samples from 0 to 100/120 em depth in two diagonally opposed locations (i.e., at stakes NW 2-14 and NW 1-15; SB 0-14 and SW 1-11; NW 3-3 and NW 6-4) for each plot. Other subsurface petri dish samples were prepared alternately for the odd (10, 30, 50, ete.) or even (20, 40, 60, ete.) depths. Petri dishes for these latter samples generally were not made for more than one "coral sand" depth per stake location. Hence, at some locations petri dish samples do not exist below the 50 to 60 em depth. All petri dishes were filled by the use of a plastic teaspoon,stirring up the soil in the bag or can with each scoop. Rocks, large pebbles and large pieces of vegetation were deliberately excluded from the petri dish, even though many of the cans included such material. Petri dish samples were visually scanned for soil characterization and the information was recorded in the Tech Advisor's daily log. These same petri dish samples were also wet-weighed to the nearest gram on a triple beam balance and given a 5-minute gamma sean according to DOE/ERSP Procedure No. 21, "Soil Sample Screening by IMP." The approximate calibration factors for this IMP screening technique were 0.1 pCi/g and | pCi/g for the net counts observed in 5 minutes for 241 4m and ! 7Cs, respectively. Althoughit is anticipated that a number of additional analyses may be required, it was felt these preliminary estimates of 24lam and 13%Cs concentrations in conjunction with soil characteristics would be adequate for experts to judge the merits of these three plots as potential plowing experiment areas. Projected data requirements included 90s, 239py, soil pH, and percent humus. Because of these projections and the "Laboratory Soil Sample Procedures," DOE/ERSP Procedure No. 8, all of the surface samples (A, B, C, D) and about one-third of the subsurface samples from Plow X-] were analyzed in the EIC lab. The surface samples received gross alpha, 241 am (gamma), and 238, 239, 240py analyses while the subsurface samples received gross alpha and 241 Am (gamma) analyses. All of these samples were dried, so percent moisture was determined and density was measured for the surface samples. Preliminary Results Soil characteristics are based on visual observations by the DOE Tech Advisor and the EIC Soil Sampling Supervisor. The soil categorization was based on these parameters: Material Color Texture/Wetness Soil Sand Dark Brown Brown Fine Coarse Pebbles Gray Wet (excess water in petri) Vegetation Light Brown Moist (condensation on petri) Coral B-9-6