Before collecting soil from a collection point, remove any above-surface debris such as sticks, stones, organic or other materials that are not part of the surfacesoil. Include all material (rocks and organic) excised in the 300 em3 sampling tool with the composite sample. Each composite sample will contain six individual samples--one taken from each of six points within the selected location at the depth of interest. The procedure for physically sampling a given location will be as follows: 1. Spin a freely rotating pointer at the center of the location to determine a random direction. Record on sample label this direction in degrees from a magnetic north. 2. Place a prepared meter-square piece of plywood at the center of the location with the arrow on the plywood oriented in the direction of the pointer. This square piece of plywood has a bolt in its center and six hexagonal head serews located on azimuths bearing in the direction of the six individual sampling points of the "A" composite sample and six slot-head screws for the "B" composite sample (See Figure A~4-1). 3. A piece of nylon line with a loop that end, Place the loop over the the marked line, extend the line (Composite "A") to determine the distances. 4, Use the square sampling tool, "cookie-cutter" (10¢m on a side and 3cm deep), to delineate the area and depth of each individual sample making up the composite. This tool is made of steel. It is sharp on the bottom edge with a shoulder 3cem up from the on one end is marked at 1.8, 5.3 and 8.8 meters from center bolt in the oriented plywood platform and, using in the direction of each of the six hexagonal screws individual sampling point at the appropriate indicated bottom, and with one side open below the shoulder. When used to collect a sample, the tool is forced into the soil until its shoulder rests on the surface. A steel shovel-like companion tool is then used to cut soil from the open side and to enter that side to remove the 300 em3 of surface soil contained by the tool. Remove soil to repeat the sampling procedure at 10 em depth and then at the 20 em depth. 5. Without changing the plywood platform used to collect the "A" composite sample proceed to align the line to the slot-head screws to collect the "B" composite sample. Collect the "B" composite in the same manner as "A" was collected, An individual sampling point will be sampled exactly where located unless that point is representative of the selected in situ location. In such a case, the point will be moved to closest acceptable point. The direction and distance of the move will be recorded on sample label; e.g., if the located point should fall on a 1000 em3 rock in a sand area, point would be moved off the rock onto the sand. not the the the Decontaminate the sampling tools after completing a selected in situ location by scouring them with soil from the location to be sampled or by washing them with clean water (fresh or sea), It is not necessary to decontaminate these tools while the samples are being composited at one location. After samples are collected and identified, surveyed (see below), and deviations have been noted, deliver them to the Eberline Sample Preparation Trailer on Enewetak Island for processing and radiochemistry analyses. V. Subsurface Soil Sampling A. When it has been determined that subsurface samples are required to evaluate an area in profile, the area will be located on a map and a procedurefor the specific case will be written ineluding the location and depths of the sampling points and the criteria for extending areas or depths. A-4-2