Changes to Soil Sampling Procedure (ERSP No.4), 20 April 1978. IV. Surface Soil Samples Cc. Replace with: Four composite samples ealled A, B, C and D (each of which will contain soil from six points around the selected location as explained in F. below) will be taken from the surface of each selected location and shall be identified by grid location, composite and bearing. F.6. Add: After composites A and B have been taken, rotate the plywood platform 45° clockwise and collect the C composite in the same manner as the A composite was collected. Then collect the D composite just as the B composite was collected. Add to end of: I. The C and D composites are to be analyzed only if so directed by the DOE Technical Advise: after his review of the A and B composite data. Signed by Bruce Church, ERSP Manager. Changes to Soil Sampling Procedure (ERSP No. 4) and Letter to "All ERSP Elements & Projeet Managers" dated 20 April 1978. IV. Surface Soil Samples Add to endof: I. The C and D composites are to be analyzed only if so directed by the DOE Technical Adviser after his review of the A and B composite data. Delete the above sentence (IV.I) as revised by letter dated 20 April 1978. Insert in its place the following sentence: The C composite is to be analyzed in the same manneras the A composite sample, and the D composite treated in the same manner as the B composite sample. Signed by Paul J. Mudra, ERSP Manager, 2 May 1978. A-4-5