1999-269 - Laserfiche WebLink

Home Browse Search

40 i Ardaman & Associates, Inc. GCOY2C ^ ^•cal l= nu, ron r+t ^rat 3 ^a MalB'idl5 (`,gltgvliaf9l5 April 28, 1999 File Number 99-061 Glace & Radcliffe, Inc. 630 North Wymore Road Maitland, Florida 32751 Attention. Subject: Gentlemen: Mr. Stanley J. Keely, P.E. Director of Environmental Services Proposalfor Preliminary Field Exploration for Master Planning Activities Associated With Proposed Expansion of Indian River County Landfill As requested by Mr. Stanley J. Keely, P.E.. Ardaman & Associates, Inc., (Ardaman) is pleased to submitthis proposal for performance of a preliminary field exploration for Master planning activities associated with the proposed expansion of the Indian River County Landfill. We understand that two historical wetland areas are located within the proposed 75 -acre landfill expansion area. These two historical wetland areas occupy approximately two and seven acres, respectively. The 2 -acre former wetland area was previously excavated, but had been backfilled with local sands. The 7 -acre former wetland area was stripped near the surface, and had been used for stockpiling of wood waste. Glace rig Radcliffe requested that a preliminary geotechnical study consisting of a limited number of shallow soil borings and some laboratory testing be conducted for the proposed landfill expansion area, including the two former wetland areas. According to Glace & Radcliffe, the level of effort for our study should be limited to that necessary for planning purposes. Glace & Radcliffe has suggested that ten 25 -foot deep soil borings be performed for this study. Based on our understanding of the project objective, Ardaman recommends the performance of eight shallow and two deep Standard Penetration Test (SPT) soil borings within the landfill expansion area. One and two of the shallow soil borings will be specifically performed within the 2 -acre and 7 -acre former wetland areas, respectively. The shallow soil borings will be terminated at 25 feet below ground surface; the deep soil borings will penetrate 50 feet below grade. Standard penetration tests and associated sampling will be performed for the upper 10 feet of the soil profile and at 5 -foot vertical intervals thereafter. In addition, Ardaman proposes to recoverfour relatively undisturbed Shelby tube soil samples. The depths to groundwater at the boring locations will be estimated by our field crew on the dates of field exploration. All soil borings will either be backfilled or grouted upon completion of the field exploration program. Soil samples recovered during the field exploration program will be visually classified in our laboratory. Representative soil samples will be used for determinations of moisture contents, grain size distributions, organic contents, moisture -dry density relationships, and hydraulic conductivities.