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~a~ 2b Analysis of Concrete-Wastes Numerous analyses have been made of raw-material components of and the solutions developed from the leaching of the concrete-waste materials, therefore we found it was unnecessary to duplicate those data. We have taken data from one example of such analyses (2 & 3) and describe the findings. The raw-material components of the concrete wastes -- rock, sand, cement, water, additives and air -- to be stored within the suggested Site are described in table I (p. B2, appendix C). A chemical analysis of cement similar to that used in the manufacture of the two concrete products ts presented in table II (p. B3, appendix C). In addition to cement and the other raw materials given in table I, the concrete-waste products contain steel products. The concrete-pipe wastes include a 6x12-in, rectangular, reinforcing network cf 0.125-in wire; some of the pipe-materials and associated caps include no. 4 and 6 reinforcing rods. Prestressed structural members, which are of several configurations, include bundles of cables or strand under tension. The number of cables within th~ members is determined by their designed uses. In table III (p. B4, appendix C) are given the findings from chemical analyses of constituents from two laboratories of two "splits" from the fine-sand size sample which was subjected to shake (leach) extraction with water. The sample was of materials from concrete panels which are similar in composition to the pipe and prestressed concrete products to be stored at the suggested Site. The leach tests are designed to simulate natural conditions occurring within the environments in which the concrete wastes 8803 14 R.K. Hoagberg Associates, Inc. Consulting 6eologists