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11/ 17/ L'UG.7 1~: L4 ~~il /4b/1bJ r'~l t'liUt l~,j PSI'isroposal No. 722-03.177 Proposed Retalning W811 along Gartlen way Eugene, Oregon November 17, 2003 Page 2 A site reconnaissance was conducted on November 13, 2003. At the time of our site visit, the site consisted of three concrete piers under the existing bridge and the embanked material sloping towards the concrete piers. Between the piers, the sloped embankment materials were covered with concrete plates. On the South side of the abutment, the soil is covered with grass and the North side, by Ivy. PROPOSED SERVICES Geotech nical Investigation The following proposed scope of services pertains to a subsurface exploration for geotechnical purposes only_ The scope of services for this phase does not include any environmental assessment for the presence or absence of wetlands or hazardous or toxic materials in the soil, surface water, groundwater, or air, on, below, or around the site. Vest Pits We propose to conduct 2 exploratory test pits for the proposed Retaining Wall. We understand that the City of Eugene has retained Eugene Sand and Gravel to perform the test pit excavations on Monday November 24, 2003. The test pits will be logged by a representative of PSI in accordance with ASTM method b5434-97, Standard Guide for Field Logging of Subsurface Exploretions of Soil and Rock. The test pits will be advanced to a depth of approximately 8 feet below existing site grade beneath the proposed retaining wall and 3 feet behind the proposed retaining wall. We will measure groundwater levels in the test pifis at the time of our field exploration. The test pits will be backfilled with excavation spoils and loosely compact®d with the back of the backhoe on the same day that the test pits are excavated. We anticipate that the area of the completed test pits at the ground surface will be approximately 25 square fee# (5 feet by 5 feet). General The test pits will be logged by a representative of PSI in accordance with the American Society for Testing and Materials (ASTM) method D5434~97, Standard Guide for Field Logging of Subsurface Explorations of Soil and Rock. The sails will be classified in the field in accordance with the American Society for Testing and Materials (ASTM) method D2488-93, Standard Practice for Descrip#ion and Identification of Soils (Visual-Manual Procedure). Representative disturbed bulk samples will be obtained for limited laboratory testing. Lab testing of disturbed samples may include in-situ moisture content, grain size analysis, Atterberg limits testing and classification In accordance with the Unified Soil Classification System (USCS)