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Proposal for Geotechnical Engineering Services Midwest Testing Proposed Bridge Repair—TB1101 �LA$O AroJtY,INC. Cass County, North Dakota A1terracon<OMPANY August 21, 2014• MTIJTerracon Proposal No. M1140317 split-barrel sample will be taken at 2%foot intervals to a depth of 15 feet, followed by a sampling interval not more than 5 feet in the remainder of the deep boring. The field exploration will also include observations for groundwater. This will occur during the exploration program while the boreholes are being advanced. No provisions have been made to collect water level data other than the observations made during the advancement of the borings. 2.1.2 Safety We are committed to conducting our work safely. Our field exploration work on this project will be conducted under the guidance of a site-specific safety plan that takes into account the information that we know about this site as it relates to safety and potential safety hazards. Our field exploration work will be conducted on or very near an active roadway (153rd Avenue Southwest). We are basing this proposal with the understanding that the Cass County Highway Department will provide site appropriate signage and traffic control in an effort to keep our field crews safe. Our field crews will make excavations to sample the soils. Such excavations could encounter subsurface utilities and/or environmental hazards. We will not perform excavations without an understanding of the subsurface utilities present based upon markings made by the various responsible parties. However, such utility location services only delineate subsurface utilities in public easements, and the potential to encounter other, unknown underground hazards remains. Also, we are not aware of environmental concerns at this project site that would create health or safety hazards associated with our exploration program. Our scope considers that standard Type D Personal Protection Equipment (PPE) is appropriate. In order to more completely address the potential for underground utilities or environmental hazards, and, in order to more completely understand other potential safety hazards associated with our field exploration program, we may interview you or a representative that you suggest to obtain information about these concerns. The results of our interview will be included in the site-specific safety plan. We are not responsible for damage to private utilities that are not made aware to us. 2.2 Laboratory Testing Representative soil samples will be tested in our laboratory to determine pertinent engineering characteristics. Testing will include visual classification, and determination of moisture content, dry density, Atterberg limits, and strength (unconfined compression and hand penetrometer), as appropriate. Additionally, this proposal includes two consolidated-undrained triaxial compression tests to be used in evaluation of the current slope failure and remediation options. Responsive■ Resourceful • Reliable 3